A buried cable auxiliary pipe penetrating device

Abstract

The application relates to the technical field of electric power engineering, and discloses a buried cable auxiliary pipe penetrating device, which comprises two pipe penetrating barrels and a plurality of telescopic sleeves connected between the two pipe penetrating barrels and used for adaptively adjusting the spacing between the two pipe penetrating barrels; a plurality of pulleys are respectively installed on the outer walls of the two pipe penetrating barrels and are circumferentially equidivided and arranged for moving in the pipeline, and one side of the pulley is movably connected in a movable cavity formed in the pipe penetrating barrel. When the flat cable is penetrated in the ground, the auxiliary pipe penetrating device is placed in the pipeline, the pulley is pushed by the first spring to abut against the inner wall of the pipeline, the pipe penetrating device can be moved in the pipeline by pushing the cable, the cable head can be protected, the pipe penetrating device can conveniently pass through the pipeline, the cable is fixed by the head fixing mechanism, and the cable can stably pass through the pipeline by sliding through the pulley.

Description

Technical Field

[0001] This invention relates to the field of power engineering technology, specifically to an underground cable auxiliary conduit installation device. Background Technology

[0002] With the rapid development of the power industry and the information industry, the environmental protection issues brought about have gradually attracted people's attention. Underground cable laying has been widely promoted in the construction and renovation of urban power grids, making cable conduit installation increasingly widely used.

[0003] For example, in the prior art, Chinese patent with publication number CN214255460U discloses an auxiliary device for cable threading. This device can prevent the cable front end from bending when the cable is threaded into the conduit, making it difficult to continue the subsequent threading work. Moreover, the device has a simple structure and is easy to operate. However, when the above-mentioned device is used to pull cables through conduits, since the conduits for power cable construction are concealed works, the cable laying personnel have no way of knowing the construction quality and specific conditions inside the conduits. This greatly increases the difficulty of construction. If the cable is forced into the conduit by force, it will cause serious damage to the cable ends and surface, affecting the normal use of the cable and putting great pressure on the later maintenance work. Therefore, an underground cable auxiliary conduit pulling device is proposed to solve the above-mentioned problems. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an underground cable auxiliary conduit device to address the shortcomings of the prior art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a buried cable auxiliary conduit installation device, comprising: two conduit cylinders, and further comprising: Several telescopic sleeves are connected between two tube sleeves to adaptively adjust the distance between the two tube sleeves; Several pulleys are respectively installed on the outer walls of two pipe-through cylinders and are arranged in a circumferentially for moving inside the pipe. One side of each pulley is movably connected to a movable cavity opened inside the pipe-through cylinder, and a first spring is installed inside the cavity to push the pulley outward so as to contact the inner wall of the pipe for pipe-through movement. The guide tube is located on the left side of the left-side pipe tube, and a cable is installed inside it to guide the cable to move inside the pipe. A head fixing mechanism is disposed inside the guide cylinder for fixing the cable head; A head protection mechanism is located on the left side of the guide tube to protect the cable head; A guide clamping mechanism is installed inside the conduit tube to fix the cable moving within the conduit tube; The head fixation mechanism includes: A ratchet is rotatably connected to the left side of the inner wall of the guide cylinder; A limiting component is provided on the inner wall of the guide cylinder and contacts the ratchet to limit the ratchet's reverse rotation; The pin is fixedly connected to the outer wall of the ratchet and rotates with the ratchet; Two fixing rods are fixedly connected to the right side of the inner wall of the guide cylinder; An arc-shaped push rod, the top of which is rotatably connected to the outer wall of the pin, and the middle part is movably connected to the outer wall of the fixed rod; The connecting seat is hinged to the bottom of the arc-shaped push rod; The head fixing plate is fixedly connected to the bottom of the connecting seat, and the arc-shaped push rod moves on the fixing rod to push the connecting seat and the head fixing plate closer to the cable for clamping; Two arc-shaped fixing plates are respectively hinged to both sides of the head fixing plate, and a coil spring is installed inside the hinge point to retract the arc-shaped fixing plates on both sides and flip them towards the cable along the hinge point to clamp the arc-shaped surface of the cable.

[0006] Preferably, the limiting component includes: The fixed seat is fixedly connected to the inner wall of the guide cylinder; The pawl is movably connected to the fixed seat via a rotating rod and contacts the outer wall of the ratchet. A baffle is fixedly connected to one side of the pawl and contacts the outer wall of the fixed seat; A tension spring, with its two ends mounted on a baffle and a fixed base respectively, is used to pull the baffle towards the fixed base.

[0007] Preferably, the head protection mechanism includes: A head protector is fixedly connected to the left side of the ratchet, with a hemispherical shape on one side to reduce head resistance when inserting the tube. Eight hinged plates are hinged to the outer wall of the head cover and fit into the circumferentially divided grooves on the outer wall; The seventh spring, with its two ends fixedly connected to the circular groove in the recess and the opening and closing plate respectively, is used to push the opening and closing plate away from the head cover; The rollers are rotatably connected to the other side of the opening and closing plate and are used to make rolling contact with the inner wall of the pipe during pipe insertion, thereby reducing frictional resistance.

[0008] Preferably, the head protection mechanism further includes: A fixing plate, located inside the head protective sleeve, is used to clamp the cable head; An adjustment sleeve, movably connected inside the head protective cover, is used to move the fixing plate; The fixing block is fixedly connected inside the head protective cover; The sixth spring, with its two ends fixedly connected to the fixing block and the adjusting sleeve, is used to push the adjusting sleeve to drive the fixing plate to move downward and clamp the cable; The push rod is hinged at the top to the opening and closing plate and at the bottom to a movable rod. The bottom of the movable rod moves through the fixed block and extends into the interior of the adjusting sleeve. When the movable rod moves down, it pushes the movable rod down to make direct contact with the fixed plate.

[0009] Preferably, four sets of fixing plates are provided, and they are respectively arranged in the longitudinal and transverse directions of the head protective sleeve with the middle of the cable as the center of symmetry. The two transverse fixing plates are arranged in an arc shape, and their inner arc sides are attached to the outer wall of the cable.

[0010] Preferably, the guiding clamping mechanism includes: Two movable sleeves are respectively and symmetrically connected to the inner wall of the tube sleeve; A clamping plate, fixedly connected to one end of the movable sleeve, is used to clamp and position the cable; The second spring, disposed on the inner wall of the movable sleeve, is used to push the clamping plate to move toward the cable in order to clamp the cable; Multiple guide pulleys are movably connected to the clamping plate and contact the outer wall of the cable to guide the cable's movement; The third spring, mounted on the guide pulley, is used to move the guide pulley to adapt to the curved surface of the cable.

[0011] Preferably, the tube is provided with a locking mechanism to limit the clamping plate during movement; The locking mechanism includes: A locking rod is located in the movable cavity, moves through the tube, and contacts the clamping plate. The fourth spring is disposed on the inner wall of the locking rod and connected to the pulley, and is used to push the locking rod to move towards the clamping plate; A limiting groove is formed on the outer wall of the locking rod; The limiting block is movably connected inside the tube through a fifth spring and contacts the limiting groove to restrict the movement of the locking rod.

[0012] Preferably, an ejection mechanism is provided between the guide cylinder and the pipe-passing cylinder to eject the guide cylinder at the pipe bend so that it can smoothly turn to pass through the pipe at the bend. The ejection mechanism includes: Two locking rods are fixedly connected to the right side of the guide tube and movably inserted into the inside of the through tube; A locking block is installed inside the tube sleeve to lock the locking rod and prevent the locking rod from disengaging from the tube sleeve; Two round rods, one end of which is connected to the locking block, and the other end is movably connected to the tube through the ninth spring, which is used to push the locking block to lock the main locking rod; A conical block is movably connected inside the tube, and its outer wall contacts two locking blocks respectively, for opening the two locking blocks; The eighth spring, connected inside the conical block and in elastic contact with the locking rod, is used to push the locking rod away from the tube sleeve; A threaded rod is fixedly connected to the right side of the conical block, and the other end of the threaded rod moves through the right-side tube and is connected to the output end of the motor installed inside it.

[0013] The present invention, by adopting the above technical solution, can bring the following beneficial effects: 1. This underground cable auxiliary conduit installation device, through its head fixing mechanism, allows for the installation of flat cables underground. By placing the auxiliary installation device inside the conduit and using a first spring to push a pulley against the inner wall of the conduit, the device can move the cable inside the conduit. Simultaneously, the cable head is protected to facilitate its movement within the conduit. The head fixing mechanism also secures the cable, promoting its sliding movement through the conduit via the pulley.

[0014] 2. This underground cable auxiliary conduit installation device, through its head protection mechanism, reduces the resistance of the cable head movement when the guide cylinder separates from the conduit cylinder during conduit installation at bends. Simultaneously, the head protection sleeve protects the cable head from damage. The sixth spring pushes the adjusting sleeve and fixing plate downwards, clamping and fixing the cable head. The two horizontal fixing plates are arc-shaped, increasing the contact area with the cable and thus improving the cable fixing effect.

[0015] 3. This underground cable auxiliary conduit installation device, through its head protection mechanism, allows the guide cylinder to detach from the conduit cylinder when the cable is being installed inside the conduit. The head protection sleeve then travels within the conduit, utilizing multiple seventh springs on the outer wall to push the opening and closing plate outwards. This causes the rollers on the opening and closing plate to contact the inner wall of the conduit, creating rolling contact and reducing friction, thus facilitating cable installation. As the rollers move, they encounter foreign objects on the inner wall of the conduit, compressing the seventh springs and pushing the push rod inwards. This, in turn, pushes the movable rod downwards to contact the fixed plate, thereby causing the fixed plate to compress the cable. The device's movement after encountering foreign objects further enhances the locking effect by resisting the cable.

[0016] 4. This underground cable auxiliary conduit installation device, through the set guide clamping mechanism, places the cable through the conduit tube and onto the upper and lower guide pulleys. The second spring pushes the clamping plate to move, thereby achieving the positioning and clamping of the cable and preventing it from moving inside the conduit tube and affecting the installation process. At the same time, through the set multiple guide pulleys, which are pushed by the third spring, they come into contact with the outer wall of the cable, thereby wrapping the cable to achieve the purpose of positioning the cable and guiding its transmission.

[0017] 5. This underground cable auxiliary conduit installation device utilizes a locking mechanism. When the cable is being installed in the conduit, the first spring provides elastic support to the pulley. As the pulley moves along the inner wall of the conduit, it assists in the installation process. During this movement, if an obstacle is encountered, the pulley moves and compresses inward to facilitate passage. Simultaneously, this inward compression pushes the fourth spring, causing the locking rod to retract inward and contact the clamping plate at its end, thus clamping and locking the plate. Furthermore, the device utilizes a limiting groove. When the limiting block contacts a different limiting groove, the fifth spring pushes the limiting block to move, locking the limiting groove and preventing the locking rod from returning to its initial position. This locks the locking rod and, consequently, limits the clamping plate.

[0018] 6. This underground cable auxiliary conduit installation device, through its ejection mechanism, causes the threaded rod to rotate upon contact with the pipe bend, thereby moving the two conduit tubes on both sides relative to each other. This releases the gap between the left side of the conduit tube and the pipe bend, facilitating the cable head's rotation and passage through the bend. Simultaneously, the threaded rod continues to rotate, moving inwards towards the conduit tube, pushing the conical block to rotate and move towards the two locking blocks. The conical outer wall of the conduit pushes the two locking blocks open, disengaging them from the locking rod. Under the action of the eighth spring, the locking rod is ejected outwards, allowing the spherical head protective sleeve to contact the pipe bend. After ejection and impact with the pipe, the cable changes direction, thus allowing the cable to continue its installation. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the cross-sectional structure of the present invention; Figure 3 For the present invention Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 This is a schematic diagram of the internal cross-sectional structure of the tube sleeve of the present invention; Figure 5 For the present invention Figure 4 Enlarged structural diagram at point B; Figure 6 For the present invention Figure 4 Enlarged structural diagram at point C; Figure 7 This is a partial structural diagram of the head fixing mechanism of the present invention; Figure 8 This is a schematic diagram of the internal cross-sectional structure of the head fixing mechanism of the present invention; Figure 9 For the present invention Figure 8 Enlarged structural diagram at point D; Figure 10 This is a schematic diagram of the internal cross-sectional structure of the head protective sleeve of the present invention; Figure 11 For the present invention Figure 10 Enlarged structural diagram at point E; Figure 12 This is a schematic diagram of the internal exploded structure of the head protective sleeve of the present invention.

[0020] In the diagram: 1. Through-tube; 2. Pulley; 21. First spring; 3. Guide cylinder; 4. Guide clamping mechanism; 41. Movable sleeve; 42. Clamping plate; 43. Second spring; 44. Guide pulley; 45. Third spring; 5. Locking mechanism; 51. Locking rod; 52. Fourth spring; 53. Limiting groove; 54. Limiting block; 55. Fifth spring; 6. Telescopic sleeve; 7. Head protection mechanism; 71. Head protection sleeve; 72. Fixing plate; 73. Adjusting sleeve; 74. Fixing block; 75. Sixth spring; 76. Movable rod; 7 7. Push rod; 78. Opening and closing plate; 79. Roller; 710. Seventh spring; 8. Ejection mechanism; 81. Locking rod; 82. Locking block; 83. Eighth spring; 84. Round rod; 85. Ninth spring; 86. Conical block; 87. Threaded rod; 9. Head fixing mechanism; 91. Head fixing plate; 92. Connecting seat; 93. Arc-shaped push rod; 94. Fixing rod; 95. Pin; 96. Ratchet; 97. Limiting assembly; 971. Fixing seat; 972. Pawl; 973. Baffle; 974. Tension spring; 98. Arc-shaped fixing plate. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figure 1-12 One embodiment of the present invention is: an underground cable auxiliary conduit installation device, comprising: two conduit cylinders 1, and further comprising: Several telescopic sleeves 6 are connected between two through-tube cylinders 1 to adaptively adjust the distance between the two through-tube cylinders 1; Several pulleys 2 are respectively installed on the outer wall of two pipe-through cylinders 1 and are arranged in a circumferentially evenly for moving inside the pipe. One side of the pulley 2 is movably connected to the movable cavity opened inside the pipe-through cylinder 1, and a first spring 21 is provided inside it for pushing the pulley 2 to move outward so as to abut against the inner wall of the pipe for pipe-through movement. The guide cylinder 3 is located on the left side of the left-side pipe cylinder 1, and a cable is installed inside it to guide the cable to move inside the pipe. The head fixing mechanism 9 is located inside the guide cylinder 3 and is used to fix the cable head; The head protection mechanism 7 is located on the left side of the guide cylinder 3 and is used to protect the cable head. The guide clamping mechanism 4 is located inside the conduit tube 1 and is used to fix the cable moving inside the conduit tube 1; The head fixation mechanism 9 includes: Ratchet 96 is rotatably connected to the left side of the inner wall of guide cylinder 3; The limiting component 97 is disposed on the inner wall of the guide cylinder 3 and contacts the ratchet 96 to limit the ratchet 96 from rotating in the opposite direction; Pin 95 is fixedly connected to the outer wall of ratchet 96 and rotates with ratchet 96; Two fixing rods 94 are fixedly connected to the right side of the inner wall of the guide cylinder 3; The top of the arc-shaped push rod 93 is rotatably connected to the outer wall of the pin 95, and the middle part is movably connected to the outer wall of the fixed rod 94. Connector 92 is hinged to the bottom of arc-shaped push rod 93; The head fixing plate 91 is fixedly connected to the bottom of the connecting seat 92, and the arc-shaped push rod 93 moves on the fixing rod 94 to push the connecting seat 92 and the head fixing plate 91 closer to the cable for clamping. Two arc-shaped fixing plates 98 are respectively hinged to both sides of the head fixing plate 91, and a coil spring is provided inside the hinge point to retract the arc-shaped fixing plates 98 on both sides and flip them towards the cable along the hinge point to clamp the arc-shaped surface of the cable.

[0023] Limiting component 97 includes: The fixing seat 971 is fixedly connected to the inner wall of the guide cylinder 3; The pawl 972 is movably connected to the fixed seat 971 via a rotating rod and contacts the outer wall of the ratchet 96. The baffle 973 is fixedly connected to one side of the pawl 972 and contacts the outer wall of the fixing seat 971; A tension spring 974 is installed at both ends on a baffle 973 and a fixed seat 971, respectively, and is used to pull the baffle 973 toward the fixed seat 971.

[0024] Working principle: When laying flat cables underground, the auxiliary laying device is placed inside the pipe and the first spring 21 pushes the pulley 2 to abut against the inner wall of the pipe. The cable is driven to move by the outer wall cable drive device. Thus, the laying device can be moved inside the pipe by pushing the cable. At the same time, the cable head can be protected to facilitate its passage in the pipe. Then, a head fixing mechanism 9 is installed at the head of the cable to fix the cable in the cable auxiliary conduit device. First, the ratchet 96 is rotated in one direction, which drives the two arc-shaped push rods 93 to slide on the fixing rod 94 and pushes the two head fixing plates 91 closer to the cable, thereby fixing the cable and preventing it from coming off and affecting the conduit installation. Then, the arc-shaped fixing plates 98 on both sides are contracted by the action of the coil spring, thereby contacting the arc-shaped surface of the cable, thereby increasing the contact area and improving the clamping effect on the cable to enhance the clamping firmness. At the same time, the limit component 97 can limit the ratchet 96 to rotate in the opposite direction, thereby preventing the cable from coming off. After the cable is installed in the conduit, the action of the tension spring 974 on the baffle 973 is released, thereby releasing the ratchet 96 from the restriction of the pawl 972, so that the ratchet 96 can rotate in the opposite direction, thereby releasing the clamping of the cable.

[0025] Please see Figure 1-12 Based on the above embodiments, in another embodiment of the present invention, the head protection mechanism 7 includes: The head protection sleeve 71 is fixedly connected to the left side of the ratchet 96, and one side of it is hemispherical to reduce head resistance when inserting the tube. Eight hinged plates 78 are hinged to the outer wall of the head cover 71 and fit into the circumferentially divided grooves on the outer wall of the cover. The seventh spring 710 has its two ends fixedly connected to the circular groove in the groove and the opening and closing plate 78, respectively, and is used to push the opening and closing plate 78 away from the head protective cover 71. Roller 79 is rotatably connected to the other side of the opening and closing plate 78 and is used to roll and contact the inner wall of the pipe during pipe insertion to reduce frictional resistance.

[0026] The head protection mechanism 7 also includes: The fixing plate 72 is located inside the head protective sleeve 71 and is used to clamp the cable head; Adjustment sleeve 73 is movably connected inside head protective sleeve 71 and is used to move fixed plate 72; The fixing block 74 is fixedly connected inside the head protective sleeve 71; The sixth spring 75 is fixedly connected at both ends to the fixing block 74 and the adjusting sleeve 73. It is used to push the adjusting sleeve 73 to drive the fixing plate 72 to move downward and clamp the cable. The push rod 77 is hinged at the top to the opening and closing plate 78 and at the bottom to a movable rod 76. The bottom of the movable rod 76 moves through the fixed block 74 and extends into the interior of the adjusting sleeve 73. When the movable rod 76 moves down, it pushes the movable rod 76 down to make direct contact with the fixed plate 72.

[0027] Four sets of fixing plates 72 are provided, and are respectively set in the longitudinal and transverse directions of the head protective sleeve 71 with the middle of the cable as the center of symmetry. The two transverse fixing plates 72 are set in an arc shape, and their inner arc sides are attached to the outer wall of the cable.

[0028] Working principle: A head protection sleeve 71 is installed at the head of the cable. When the cable is threaded through the conduit at the bend, the guide cylinder 3 separates from the conduit cylinder 1, reducing the resistance when the cable head moves while continuing to thread through the conduit. At the same time, the head protection sleeve 71 can protect the cable head and prevent damage to the cable head. After the cable head is installed inside the head protection sleeve 71, the sixth spring 75 pushes the adjusting sleeve 73 and the fixing plate 72 to move down, thereby clamping the cable and fixing the cable head. Meanwhile, the two horizontal fixing plates 72 are arc-shaped, which increases the contact area with the cable when fixing the cable, thereby improving the fixing effect of the cable. Furthermore, when the cable is threaded through the conduit, after the guide cylinder 3 separates from the threading cylinder 1, the head protective sleeve 71 travels through the conduit. Multiple seventh springs 710 on the outer wall push the opening and closing plate 78 to expand outward. At the same time, the rollers 79 on the opening and closing plate 78 contact the inner wall of the conduit, creating rolling contact and reducing friction with the inner wall of the conduit, thus facilitating the cable threading through the conduit. When the rollers 79 move, they come into contact with foreign objects on the inner wall of the conduit and squeeze the seventh springs 710, thereby pushing the push rod 77 inward to move, which in turn pushes the movable rod 76 downward to contact the fixed plate 72, thereby pushing the fixed plate 72 to squeeze the cable. When it encounters foreign objects and moves, it resists the cable, thereby improving the locking effect.

[0029] Please see Figure 1-12 Based on the above embodiments, in another embodiment of the present invention, the guide clamping mechanism 4 includes: Two movable sleeves 41 are respectively and symmetrically connected to the inner wall of the tube sleeve 1; The clamping plate 42 is fixedly connected to one end of the movable sleeve 41 and is used to clamp and position the cable. The second spring 43 is disposed on the inner wall of the movable sleeve 41 and is used to push the clamping plate 42 to move toward the cable to clamp the cable. Multiple guide pulleys 44 are movably connected to the clamping plate 42 and contact the outer wall of the cable to guide the movement of the cable; The third spring 45 is mounted on the guide pulley 44 and is used to push the guide pulley 44 to move to adapt to the curved surface of the cable.

[0030] Working principle: The cable is placed inside the conduit tube 1 and positioned on the upper and lower guide pulleys 44. The clamping plate 42 is moved by the second spring 43, thereby positioning and clamping the cable to prevent it from moving inside the conduit tube 1 and affecting the conduit insertion process. At the same time, the multiple guide pulleys 44 are pushed by the third spring 45 to come into contact with the outer wall of the cable, thereby wrapping the cable to achieve the purpose of positioning and guiding the cable for transmission.

[0031] Please see Figure 1-12 Based on the above embodiments, in another embodiment of the present invention, a locking mechanism 5 is provided on the tube 1 for limiting the clamping plate 42 when it moves; Locking mechanism 5 includes: The locking rod 51 is located in the movable cavity and moves through the tube 1 and contacts the clamping plate 42. The fourth spring 52 is disposed on the inner wall of the locking rod 51 and connected to the pulley 2, and is used to push the locking rod 51 to move towards the clamping plate 42; The limiting groove 53 is formed on the outer wall of the locking rod 51; The limiting block 54 is movably connected inside the tube 1 via the fifth spring 55 and contacts the limiting groove 53 to restrict the movement of the locking rod 51.

[0032] Working principle: When the cable is being threaded through the conduit, the two threading cylinders 1 move along the inner wall of the conduit. The first spring 21 provides elastic support for the pulley 2. As the pulley 2 moves along the inner wall of the conduit, it assists in threading the cable. During the movement, when an obstacle is encountered, the pulley 2 moves and compresses inward to allow the cable to pass through the obstacle smoothly. Simultaneously, the inward compression compresses the fourth spring 52, which in turn pushes the locking rod 51 to retract inward and contact the clamping plate 42 at its end, thus clamping and locking the clamping plate 42. At the same time, the limiting block 54, after contacting different limiting grooves 53, is pushed by the fifth spring 55 to move, thereby locking the limiting groove 53 and preventing the locking rod 51 from returning to its initial position, thus achieving the purpose of locking the locking rod 51.

[0033] Please see Figure 1-12 Based on the above embodiments, in another embodiment of the present invention, an ejection mechanism 8 is provided between the guide cylinder 3 and the pipe-through cylinder 1, which is used to eject the guide cylinder 3 at the pipe bend so as to smoothly turn to the pipe-through at the bend. The ejection mechanism 8 includes: Two locking rods 81 are fixedly connected to the right side of the guide cylinder 3 and movably inserted into the inside of the through-tube cylinder 1; Locking block 82 is installed inside the pipe tube 1 to lock locking rod 81 and prevent locking rod 81 from disengaging from pipe tube 1; Two round rods 84, one end of which is connected to the locking block 82, and the other end is movably connected to the tube 1 through the ninth spring 85, which is used to push the locking block 82 to lock the main locking rod 81; The conical block 86 is movably connected inside the tube 1, and its outer wall contacts the two locking blocks 82 respectively, for opening the two locking blocks 82; The eighth spring 83 is connected inside the conical block 86 and elastically contacts the locking rod 81, and is used to push the locking rod 81 away from the tube 1; The threaded rod 87 is fixedly connected to the right side of the tapered block 86. The other end of the threaded rod 87 moves through the right-side through-tube 1 and is connected to the output end of the motor installed inside it.

[0034] Working principle: When the cable reaches the bend in the pipe, the motor drives the threaded rod 87 to rotate, which in turn moves the left conduit tube 1 closer to the right conduit tube 1. When the two conduit tubes 1 are close, the gap between the left side of the conduit tube 1 and the bend in the pipe is released, making it easier for the cable head to rotate and pass through the bend. At the same time, the threaded rod 87 continues to rotate, rotating into the conduit tube 1 and pushing the conical block 86 to rotate and move towards the two locking blocks 82. The conical outer wall pushes the two locking blocks 82 open, causing the two locking blocks 82 to disengage from the locking rod 81. Under the action of the eighth spring 83, the locking rod 81 is pushed outward and ejected. The spherical head protective sleeve 71 then contacts the bend in the pipe and ejects and changes direction, thus changing the direction of cable passage and allowing the cable to continue to pass through the pipe.

[0035] This invention provides an auxiliary conduit installation device for underground cables. Many methods and approaches exist for implementing this technical solution; the above description is merely a preferred embodiment of the invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this invention, and these improvements and modifications should also be considered within the scope of protection of this invention. All components not explicitly stated in this embodiment can be implemented using existing technologies.

Claims

1. A buried cable auxiliary conduit installation device, comprising: The two through-tube tubes (1) are characterized in that they further include: Several telescopic sleeves (6) are connected between two tube sleeves (1) to adaptively adjust the distance between the two tube sleeves (1); Several pulleys (2) are respectively installed on the outer walls of two pipe-through cylinders (1) and are arranged in a circumferentially evenly for moving inside the pipe. One side of the pulley (2) is movably connected to the movable cavity opened inside the pipe-through cylinder (1), and a first spring (21) is provided inside it for pushing the pulley (2) to move outward so as to abut against the inner wall of the pipe for pipe-through movement. The guide tube (3) is located on the left side of the left-side pipe tube (1), and a cable is installed inside it to guide the cable to move in the pipe. A head fixing mechanism (9) is provided inside the guide cylinder (3) for fixing the cable head; A head protection mechanism (7) is provided on the left side of the guide cylinder (3) to protect the cable head; A guide clamping mechanism (4) is provided inside the tube sleeve (1) to fix the cable moving inside the tube sleeve (1); The head fixing mechanism (9) includes: A ratchet (96) is rotatably connected to the left side of the inner wall of the guide cylinder (3); A limiting component (97) is disposed on the inner wall of the guide cylinder (3) and contacts the ratchet (96) to limit the ratchet (96) from rotating in the opposite direction; The pin (95) is fixedly connected to the outer wall of the ratchet (96) and rotates with the ratchet (96); Two fixing rods (94) are fixedly connected to the right side of the inner wall of the guide cylinder (3); The top of the arc-shaped push rod (93) is rotatably connected to the outer wall of the pin (95), and the middle part is movably connected to the outer wall of the fixed rod (94); The connecting seat (92) is hinged to the bottom of the arc-shaped push rod (93); The head fixing plate (91) is fixedly connected to the bottom of the connecting seat (92), and the arc-shaped push rod (93) moves on the fixing rod (94) to push the connecting seat (92) and the head fixing plate (91) closer to the cable for clamping; Two arc-shaped fixing plates (98) are respectively hinged to the two sides of the head fixing plate (91), and a coil spring is provided inside the hinge to retract the arc-shaped fixing plates (98) on both sides and flip them toward the cable along the hinge point to clamp the arc-shaped surface of the cable.

2. The underground cable auxiliary conduit installation device according to claim 1, characterized in that: The limiting component (97) includes: The fixed seat (971) is fixedly connected to the inner wall of the guide cylinder (3); The pawl (972) is movably connected to the fixed seat (971) via a rotating rod and contacts the outer wall of the ratchet (96); The baffle (973) is fixedly connected to one side of the pawl (972) and contacts the outer wall of the fixed seat (971); A tension spring (974) is installed at both ends on a baffle (973) and a fixed seat (971) respectively, and is used to pull the baffle (973) to move towards the fixed seat (971).

3. The underground cable auxiliary conduit installation device according to claim 2, characterized in that: The head protection mechanism (7) includes: A head protector (71) is fixedly connected to the left side of the ratchet (96), and one side of it is hemispherical to reduce head resistance when inserting the tube; Eight hinged plates (78) are hinged to the outer wall of the head cover (71) and fit into the circumferentially divided grooves on the outer wall; The seventh spring (710) is fixedly connected at both ends to the circular groove in the groove and the opening and closing plate (78) respectively, and is used to push the opening and closing plate (78) away from the head cover (71). The roller (79) is rotatably connected to the other side of the opening and closing plate (78) and is used to roll and contact the inner wall of the pipe when passing through the pipe to reduce frictional resistance.

4. The underground cable auxiliary conduit installation device according to claim 3, characterized in that: The head protection mechanism (7) also includes: A fixing plate (72) is disposed inside the head protective sleeve (71) for clamping the cable head; Adjustable sleeve (73), movably connected inside head protective sleeve (71), is used to move fixed plate (72). The fixing block (74) is fixedly connected inside the head protective cover (71); The sixth spring (75) is fixedly connected at both ends to the fixing block (74) and the adjusting sleeve (73), and is used to push the adjusting sleeve (73) to drive the fixing plate (72) to move downward and clamp the cable; The push rod (77) is hinged at the top to the opening and closing plate (78) and hinged at the bottom to a movable rod (76). The bottom of the movable rod (76) moves through the fixed block (74) and extends into the interior of the adjusting sleeve (73). When the movable rod (76) moves down, it pushes the movable rod (76) down to directly contact the fixed plate (72).

5. The underground cable auxiliary conduit installation device according to claim 4, characterized in that: The fixing plate (72) is provided in four sets, and is respectively set in the longitudinal and transverse directions of the head protective sleeve (71) with the middle of the cable as the center of symmetry. The two transverse fixing plates (72) are set in an arc shape, and their inner arc side is attached to the outer wall of the cable.

6. The underground cable auxiliary conduit installation device according to claim 5, characterized in that: The guide clamping mechanism (4) includes: Two movable sleeves (41) are respectively and symmetrically connected to the inner wall of the tube sleeve (1); A clamping plate (42) is fixedly connected to one end of the movable sleeve (41) for clamping and positioning the cable; The second spring (43) is disposed on the inner wall of the movable sleeve (41) for pushing the clamping plate (42) to move toward the cable to clamp the cable; Multiple guide pulleys (44) are movably connected to the clamping plate (42) and contact the outer wall of the cable to guide the cable movement; A third spring (45) is provided on the guide pulley (44) to push the guide pulley (44) to move to adapt to the curved surface of the cable.

7. The underground cable auxiliary conduit installation device according to claim 6, characterized in that: The tube tube (1) is provided with a locking mechanism (5) for limiting the clamping plate (42) when it moves; The locking mechanism (5) includes: The locking rod (51) is set in the movable cavity and moves through the tube sleeve (1) and contacts the clamping plate (42); A fourth spring (52) is provided on the inner wall of the locking rod (51) and connected to the pulley (2) for pushing the locking rod (51) to move toward the clamping plate (42); A limiting groove (53) is formed on the outer wall of the locking rod (51); The limiting block (54) is movably connected inside the tube sleeve (1) by the fifth spring (55) and contacts the limiting groove (53) to restrict the movement of the locking rod (51).

8. The underground cable auxiliary conduit installation device according to claim 7, characterized in that: An ejection mechanism (8) is provided between the guide cylinder (3) and the pipe-through cylinder (1) to eject the guide cylinder (3) at the pipe bend so that it can smoothly turn to the pipe-through cylinder at the bend. The ejection mechanism (8) includes: Two locking rods (81) are fixedly connected to the right side of the guide tube (3) and movably inserted into the inside of the through tube (1); A locking block (82) is provided inside the tube sleeve (1) to lock the locking rod (81) and prevent the locking rod (81) from disengaging from the tube sleeve (1). Two round rods (84) are connected at one end to the locking block (82) and at the other end to the tube (1) via the ninth spring (85), which are used to push the locking block (82) to lock the main locking rod (81). A conical block (86) is movably connected inside the tube (1), and its outer wall contacts two locking blocks (82) respectively, for opening the two locking blocks (82). The eighth spring (83) is connected inside the conical block (86) and elastically contacts the locking rod (81) to push the locking rod (81) away from the tube sleeve (1). A threaded rod (87) is fixedly connected to the right side of the conical block (86). The other end of the threaded rod (87) moves through the right side of the through-tube (1) and is connected to the output end of the motor installed inside it.

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