Self-adaptive embedded pipe diameter type threading device

Abstract

The invention discloses a self-adaptive embedded pipe diameter type threading device, and relates to the technical field of threading heads, the threading device comprises a threading head, the top end of the threading head is provided with a connecting hole; the number of the first connecting rods is multiple, and the multiple first connecting rods are arranged on the outer wall of the threading head in a circumferential array mode; and the self-adaptive mechanism is positioned on the outer wall of the threading head and is used for enabling the threading head to adapt to the inner diameters of the embedded pipes with different sizes. Through cooperation of parts such as a self-adaptive mechanism, the first connecting rods generate thrust on the second connecting rods, so that the second connecting rods push the trapezoidal blocks to move towards the top of the threading head in the limiting grooves, the multiple first connecting rods can automatically retract into the embedded pipe, and when the threading head completely enters the embedded pipe, the threading head can automatically retract into the embedded pipe. And when the plurality of rollers are attached to the inner wall of the embedded pipe, the smoothness of subsequent threading is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of threading heads, in particular to an adaptive pre-buried pipe diameter type threading device. Background Art

[0002] During building electrical construction, wire conduits are generally buried in the building according to the direction of the electrical lines. When threading cables, electric or manual wire threaders are often used. First, the threading head and the wire of the threader are passed through the pre-buried wire conduit, and then the cable that needs to be passed through is bent and hooked on the end of the threading head. Then the threading head is pulled out from the end point to bring the cable into the conduit.

[0003] When the threading head of the existing threading device is inserted into the embedded pipe, the threading head will run around everywhere and cannot automatically adapt to the diameter of the embedded pipe. If the staff is inexperienced, the threading head will get stuck, twisted or damaged in the embedded pipe, and it will be more difficult to thread the wires in the embedded pipe with wires. For this reason, we provide an adaptive embedded pipe diameter threading device to solve the above problems. Summary of the invention

[0004] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] In view of the problem that when the threading head of the existing adaptive embedded pipe diameter threading device is threading in the embedded pipe, if the staff is inexperienced, the threading head may get stuck or damaged in the embedded pipe, thereby reducing work efficiency, the present invention is proposed.

[0006] Therefore, the object of the present invention is to provide an adaptive pre-buried pipe diameter threading device, which is used to solve the problem that when the threading head of the threading device is inserted into the interior of the pre-buried pipe, the threading head will run around and cannot automatically adapt to the diameter of the pre-buried pipe. If the staff is inexperienced, the threading head will get stuck, twisted or damaged in the pre-buried pipe.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: an adaptive pre-buried pipe diameter threading device, the device comprising: a threading head, a connecting hole is opened at the top end of the threading head; a first connecting rod, a plurality of the first connecting rods are provided, and a plurality of the first connecting rods are arranged in a circular array on the outer wall of the threading head; an adaptive mechanism, located on the outer wall of the threading head, for enabling the threading head to adapt to the inner diameters of pre-buried pipes of different sizes; a material shifting unit, located at the end of the first connecting rod, for shifting the wires in the pre-buried pipe; a reset assembly, located at the bottom of the threading head, for limiting the material shifting unit and the adaptive mechanism.

[0008] As a preferred solution of the adaptive pre-buried pipe diameter threading device described in the present invention, the adaptive mechanism comprises a plurality of limit grooves opened on the outer wall of the threading head, the number of the limit grooves matches the first connecting rod, a fixed rotating rod is fixedly connected to the inner side of each of the limit grooves, the first connecting rod is rotatably connected to the outer wall of the fixed rotating rod, the inner side of the first connecting rod is rotatably connected to an auxiliary shaft, the outer wall of the auxiliary shaft is fixedly connected to a roller, a second connecting rod is provided on the inner side of the first connecting rod, the second connecting rod is rotatably connected to the outer wall of the auxiliary shaft, a trapezoidal block is slidably connected to the inner side of the limit groove, the side wall of the trapezoidal block is fixedly connected to the limit seat, the end of the second connecting rod away from the roller is rotatably connected to the limit seat through a rotating shaft, a third elastic component is installed between the trapezoidal block and the limit groove, and an auxiliary component for limiting the trapezoidal block is provided on one side of the trapezoidal block.

[0009] As a preferred solution of the adaptive pre-buried pipe diameter threading device described in the present invention, the auxiliary component includes an internal rotating rod rotatably connected to the inside of the threading head, the bottom of the internal rotating rod is fixedly connected to a fixing rod, the bottom of the fixing rod is slidably connected to an insertion rod, a first elastic component is installed between the fixing rod and the insertion rod, two circular limiting holes are provided at the bottom of the threading head, and one end of the insertion rod passes through the fixing rod and extends to the inside of a circular limiting hole, a plurality of connecting rods are fixedly connected to the outer wall of the internal rotating rod, one end of each of the plurality of connecting rods is fixedly connected to an extrusion rod, and a plurality of the limiting grooves are provided with rotating grooves matching the extrusion rods.

[0010] As a preferred solution of the adaptive pre-buried pipe diameter threading device described in the present invention, the auxiliary component also includes a rebound groove opened on the side wall of the trapezoidal block, the inner side of the rebound groove is slidably connected to a limiting block, the back of the limiting block is fixedly connected with a slider matching the rebound groove, and a second elastic component is respectively installed between the two ends of the slider and the rebound groove, the side wall of the extrusion rod is provided with a plurality of arc grooves, and the side wall of the limiting block is provided with an arc groove matching the arc groove.

[0011] As a preferred solution of the adaptive embedded pipe diameter threading device described in the present invention, the material shifting unit includes fixed seats respectively fixedly connected to one side of multiple first connecting rods, the inner side of each of the fixed seats is rotatably connected to a fixed toggle plate, the interior of the fixed toggle plate is slidably connected to a movable toggle plate, a first arc spring is installed between the fixed toggle plate and the movable toggle plate, and a limiting component for limiting the movement of the movable toggle plate is provided on the top of the fixed toggle plate.

[0012] As a preferred solution of the adaptive pre-buried pipe diameter threading device described in the present invention, the limiting component includes an engagement groove opened on the top of the movable toggle plate, an arc-shaped rack is fixedly connected to the inner side of the engagement groove, an auxiliary seat is fixedly connected to the top of the fixed toggle plate, a connecting rotating rod is rotatably connected to the bottom of the auxiliary seat, and one end of the connecting rotating rod is fixedly connected to a spur gear meshing with the arc-shaped rack.

[0013] As a preferred solution of the adaptive pre-buried pipe diameter threading device described in the present invention, the limiting component also includes a ratchet arranged on the top of the auxiliary seat, and one end of the connecting rotating rod passes through the outside of the auxiliary seat and is fixedly connected to the ratchet, an auxiliary block is provided on one side of the ratchet, the top of the auxiliary block is fixedly connected with an auxiliary rod, the outer wall of the auxiliary rod is rotatably connected with a ratchet that meshes with the ratchet, and a first torsion spring is installed between the auxiliary rod and the ratchet.

[0014] As a preferred solution of the adaptive pre-buried pipe diameter threading device described in the present invention, the material dialing unit also includes a connecting column rod fixedly connected to the bottom of the fixed dial plate, one side of the first connecting rod is fixedly connected to a fixed frame, and one end of the connecting column rod passes through the interior of the fixed frame and is rotatably connected to a fixed sleeve, one end of the fixed sleeve is fixedly connected to two first bevel gears, the two first bevel gears are connected by an auxiliary connecting rod, and the directions of the two first bevel gears are arranged opposite to each other, a second torsion spring is installed between one of the first bevel gears and the connecting column rod, one end of the auxiliary shaft passes through the interior of the fixed frame and is fixedly connected to a second bevel gear meshing with the first bevel gear, and the meshing teeth of the second bevel gear are only half.

[0015] As a preferred solution of the adaptive pre-buried pipe diameter threading device described in the present invention, the reset assembly includes a rectangular groove opened on the side wall of the first connecting rod, a moving block is slidably connected to the inner side of the rectangular groove, the top of the moving block is fixedly connected to a cylindrical rod, one end of the cylindrical rod is rotatably connected to an abutment wheel, the outer wall of the fixed rotating rod is fixedly connected to an arc-shaped protrusion, a fourth elastic component is installed between the moving block and the rectangular groove, and the bottom of the moving block is fixedly connected to the first abutment block.

[0016] As a preferred solution of the adaptive pre-buried pipe diameter threading device described in the present invention, the reset assembly also includes a connecting seat fixedly connected to the top of the fixed toggle plate, the inner side of the connecting seat is slidably connected with a first abutment rod abutting the first abutment block, one end of the first abutment rod is fixedly connected to a second abutment block, a second arc spring is installed between the connecting seat and the second abutment block, an auxiliary elastic component is installed between the bottom of the auxiliary block and the fixed toggle plate, the auxiliary block is slidably connected to the top of the fixed toggle plate, and the outer wall of the auxiliary block is fixedly connected with a second abutment rod abutting the second abutment block.

[0017] Beneficial effects of the present invention: 1. By setting up the coordination of components such as the adaptive mechanism, the first connecting rod generates a thrust on the second connecting rod, thereby pushing the trapezoidal block to move toward the top of the threading head inside the limiting groove through the second connecting rod, so that multiple first connecting rods can be automatically retracted into the embedded tube. When the threading head completely enters the embedded tube, it fits with the inner wall of the embedded tube through multiple rollers. The staff pulls the insertion rod out from one of the circular limiting holes by hand, and then pushes the fixing rod, thereby driving the internal rotating rod to rotate inside the threading head. When the insertion rod is aligned with the other When a circular limiting hole is formed, the insertion rod is loosened, and the insertion rod is inserted into another circular limiting hole under the action of the first elastic component to limit the internal rotating rod. When the internal rotating rod rotates, the multiple extrusion rods fixed on the outer wall of the internal rotating rod are driven to rotate, and the arc groove is engaged with the arc groove on the limiting block, so that the moving position of the trapezoidal block is limited by the limiting block, so that the third elastic component is limited and does not generate a large force, so that the first connecting rod is against the inside of the embedded pipe, thereby ensuring the smoothness of subsequent threading; 2. By setting the coordination of the limit block and other parts, when the inner diameter of the embedded pipe changes slightly, the second connecting rod will push the trapezoidal block to move. Since the limit block is limited and cannot move, and the limit block is slidably connected with the trapezoidal block, the trapezoidal block can slide relative to the limit block, so that the first connecting rod can be adaptively fine-tuned during the threading process, thereby improving the smoothness of subsequent threading; 3. By arranging the cooperation of the shifting unit and other parts, when the threading head is threading the wire inside the embedded pipe, the roller is initially against the inner wall of the embedded pipe. As the threading head moves, the roller and the embedded pipe are rubbed and rolled, and the second bevel gear is driven to rotate by the auxiliary shaft. When the outer wall bevel teeth of the second bevel gear are meshed with the first bevel gear, the fixed sleeve is driven to rotate. Under the action of the second torsion spring, the fixed sleeve drives the connecting column to rotate, thereby driving the fixed toggle plate and the movable toggle plate to rotate in the direction close to the inner wall of the embedded pipe. When the outer wall bevel teeth of the second bevel gear are separated from one of the first bevel gears, the outer wall bevel teeth of the second bevel gear will mesh with the other first bevel gear, and drive the fixed toggle plate and the movable toggle plate to rotate toward the outer wall direction of the threading head, so that the wires are repeatedly toggled. This repeated toggling action helps the newly inserted wires to pass smoothly between the existing wires, thereby reducing the resistance and difficulty in the threading process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them: Figure 1It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the bottom structure of the present invention.

[0020] Figure 3 It is a schematic diagram of the adaptive mechanism of the present invention.

[0021] Figure 4 It is a structural diagram of the connection between the first connecting rod and the roller of the present invention.

[0022] Figure 5 It is a cross-sectional view of a threading head of the present invention.

[0023] Figure 6 For the present invention Figure 5 Enlarged view of point A in the middle.

[0024] Figure 7 This is a structural diagram of the extruded rod and the connecting rod of the present invention.

[0025] Figure 8 It is a structural diagram of the connection between the second connecting rod and the trapezoidal block of the present invention.

[0026] Fig. 9 It is a schematic diagram of the clamping connection between the extrusion rod and the trapezoidal block of the present invention.

[0027] Fig.10 This is a structural diagram of one side of the first connecting rod of the present invention.

[0028] Fig.11 It is a structural diagram of the connection between the first connecting rod and the moving block of the present invention.

[0029] Fig.12 It is a diagram showing the internal structure of the meshing groove of the present invention.

[0030] Fig.13 It is a structural diagram of the connection between the auxiliary block and the first abutment rod of the present invention.

[0031] Fig.14 This is a diagram showing the internal structure of the fixed frame of the present invention.

[0032] Fig.15 It is a structural diagram of the connection between the fixed toggle plate and the movable toggle plate of the present invention.

[0033] In the figure: 1, threading head; 2, connecting hole; 3, first connecting rod; 4, second connecting rod; 5, roller; 6, fixed frame; 7, fixed toggle plate; 8, movable toggle plate; 9, limit groove; 10, internal rotating rod; 11, extrusion rod; 12, fixed rod; 13, plug rod; 14, first elastic component; 15, circular limit hole; 16, connecting rod; 17, arc-shaped slot; 18, limit seat; 19, trapezoidal block; 20, rebound slot; 21, limit block; 22, second elastic component; 23, fixed rotating rod; 24, moving block; 25, fixed seat; 26, third elastic component; 27, ratchet; 28, arc-shaped protrusion; 29, rectangular slot ; 30. Columnar rod; 31. Abutment wheel; 32. First abutment block; 33. Fourth elastic component; 34. Engaging groove; 35. Arc rack; 36. Auxiliary seat; 37. Connecting rotating rod; 38. Straight gear; 39. Auxiliary block; 40. Auxiliary rod; 41. Ratchet; 42. First torsion spring; 43. Auxiliary elastic component; 44. First abutment rod; 45. Second abutment block; 46. Connecting seat; 47. Second abutment rod; 48. First arc spring; 49. Connecting column rod; 50. Fixed sleeve; 51. Second torsion spring; 52. First bevel gear; 53. Second bevel gear; 54. Auxiliary shaft; 55. Second arc spring. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0035] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0036] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0037] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0038] Reference Figure 1 to Figure 15, provides an adaptive pre-buried pipe diameter threading device, comprising: a threading head 1, a connecting hole 2 is opened at the top end of the threading head 1; a first connecting rod 3, a plurality of first connecting rods 3 are provided, and a plurality of first connecting rods 3 are arranged in a circular array on the outer wall of the threading head 1; an adaptive mechanism, located on the outer wall of the threading head 1, and used to enable the threading head 1 to adapt to the inner diameters of pre-buried pipes of different sizes, the adaptive mechanism comprising a plurality of limiting grooves 9 opened on the outer wall of the threading head 1, the number of the limiting grooves 9 matches the first connecting rod 3, and a fixed rotating rod 23 is fixedly connected to the inner side of each limiting groove 9, The first connecting rod 3 is rotatably connected to the outer wall of the fixed rotating rod 23, the inner side of the first connecting rod 3 is rotatably connected to the auxiliary shaft 54, the outer wall of the auxiliary shaft 54 ​​is fixedly connected to the roller 5, the inner side of the first connecting rod 3 is provided with a second connecting rod 4, the second connecting rod 4 is rotatably connected to the outer wall of the auxiliary shaft 54, the inner side of the limiting groove 9 is slidably connected to the trapezoidal block 19, the side wall of the trapezoidal block 19 is fixedly connected to the limiting seat 18, the end of the second connecting rod 4 away from the roller 5 is rotatably connected to the limiting seat 18 through the rotating shaft, a third elastic component 26 is installed between the trapezoidal block 19 and the limiting groove 9, and one side of the trapezoidal block 19 An auxiliary component for limiting the trapezoidal block 19 is provided, and the auxiliary component includes an internal rotating rod 10 rotatably connected to the inside of the threading head 1, a fixed rod 12 is fixedly connected to the bottom of the internal rotating rod 10, and an insertion rod 13 is slidably connected to the bottom of the fixed rod 12, and a first elastic component 14 is installed between the fixed rod 12 and the insertion rod 13. Two circular limiting holes 15 are provided at the bottom of the threading head 1, and one end of the insertion rod 13 passes through the fixed rod 12 and extends to the inside of a circular limiting hole 15. A plurality of connecting rods 16 are fixedly connected to the outer wall of the internal rotating rod 10, and one of the plurality of connecting rods 16 The ends are fixedly connected with an extrusion rod 11, and the interiors of the plurality of limit grooves 9 are provided with rotation grooves matching the extrusion rod 11, the auxiliary component also includes a rebound groove 20 provided on the side wall of the trapezoidal block 19, the inner side of the rebound groove 20 is slidably connected with a limit block 21, the back of the limit block 21 is fixedly connected with a slider matching the rebound groove 20, and a second elastic component 22 is respectively installed between the two ends of the slider and the rebound groove 20, the side wall of the extrusion rod 11 is provided with a plurality of arc grooves 17, and the side wall of the limit block 21 is provided with an arc groove matching the arc groove 17; The steel wire of the existing threading device can be fixedly connected to the bottom of the internal rotating rod 10. When the staff needs to thread the wire in the embedded tube and there is no wire in the embedded tube, the threading head 1 is first inserted into the embedded tube. When the threading head 1 enters the embedded tube, the first connecting rod 3 will be squeezed by the embedded tube, so that the first connecting rod 3 generates a thrust on the second connecting rod 4, thereby pushing the trapezoidal block 19 to move toward the top of the threading head 1 in the limiting groove 9 through the second connecting rod 4, so that multiple first connecting rods 3 can automatically retract into the embedded tube. When the threading head 1 completely enters the embedded tube, multiple rollers 5 are connected to the inner wall of the embedded tube. When fitting, the staff pulls out the insertion rod 13 from one of the circular limiting holes 15 by hand, and then pushes the fixing rod 12, thereby driving the internal rotating rod 10 to rotate inside the threading head 1. When the insertion rod 13 is aligned with the other circular limiting hole 15, the insertion rod 13 is released, and the insertion rod 13 is inserted into the other circular limiting hole 15 under the action of the first elastic component 14 to limit the internal rotating rod 10. When the internal rotating rod 10 rotates, the multiple extrusion rods 11 fixed on the outer wall of the internal rotating rod 10 are driven to rotate, and the arc groove 17 is engaged with the arc groove on the limiting block 21, thereby passing through the limiting card The block 21 limits the moving position of the trapezoidal block 19, so that the third elastic component 26 is limited and will not have a large effect on making the first connecting rod 3 abut against the inside of the embedded pipe, thereby ensuring the smoothness of subsequent threading. If the arc groove on the limiting block 21 is butted against the vertex of the arc groove 17, and the insertion rod 13 cannot be inserted into the corresponding circular limiting hole 15, the staff only needs to gently push the first connecting rod 3 by hand, so that the trapezoidal block 19 can be slightly moved inside the limiting groove 9, so that the limiting block 21 can be engaged with the arc groove 17. When the threading head 1 enters the embedded pipe, the first connecting rod 3 The rod 3 is squeezed, pushing the second connecting rod 4 and the trapezoidal block 19 to move in the limiting groove 9. This process shows that the threading head 1 has adaptive ability and can be adjusted according to the inner diameter of the embedded pipe. When the top of the slot on the limiting block 21 is connected with the vertex of the arc-shaped slot 17, causing the insertion rod 13 to be unable to be inserted into the corresponding circular limiting hole 15, the staff can lightly push the first connecting rod 3 for fine adjustment, so that the trapezoidal block 19 moves slightly in the limiting groove 9, thereby realizing the clamping connection between the limiting block 21 and the arc-shaped slot 17. This design not only improves the flexibility of the threading head 1, but also ensures its reliability in complex environments. When the inner diameter of the embedded pipe changes slightly, the second connecting rod 4 will push the trapezoidal block 19 to move. Since the limit block 21 is limited and cannot move, and the limit block 21 is slidably connected to the trapezoidal block 19, the trapezoidal block 19 can slide relative to the limit block 21, so that the first connecting rod 3 can be adaptively fine-tuned during the threading process, thereby improving the smoothness of subsequent threading. Position limiting is achieved through a series of sophisticated mechanical structures, and fine-tuning is performed when necessary to ensure that the threading head 1 can accurately and reliably complete the threading task. When the threading head 1 reaches the other end of the embedded pipe, the electric The wire is fixed in the connecting hole 2, and then the staff pulls back the threading head 1 to bring the wire out of the pre-buried tube, so that the threading is completed. When the threading head 1 is used up, it is only necessary to insert the insertion rod 13 into the initial circular limiting hole 15, and then push the trapezoidal block 19 to move to the initial position under the action of the third elastic component 26, so as to restore the first connecting rod 3 to its original position. When the trapezoidal block 19 is no longer limited, the limiting block 21 is pushed to the center point of the trapezoidal block 19 under the action of the second elastic component 22, so that the limiting block 21 can be kept in the center position of the trapezoidal block 19, thereby improving the applicability of the threading head 1; Reference Figure 1 to Figure 15The material shifting unit is located at the end of the first connecting rod 3 and is used to shift the wires in the embedded pipe. The material shifting unit includes a fixing seat 25 fixedly connected to one side of the plurality of first connecting rods 3, each fixing seat 25 is rotatably connected to the inner side of a fixed shifting plate 7, and a movable shifting plate 8 is slidably connected to the inner side of the fixed shifting plate 7. A first arc spring 48 is installed between the fixed shifting plate 7 and the movable shifting plate 8. A limiting component for limiting the movement of the movable shifting plate 8 is provided on the top of the fixed shifting plate 7. The limiting component includes a meshing groove 34 opened on the top of the movable toggle plate 8, an arc-shaped rack 35 is fixedly connected to the inner side of the meshing groove 34, an auxiliary seat 36 is fixedly connected to the top of the fixed toggle plate 7, a connecting rod 37 is rotatably connected to the bottom of the auxiliary seat 36, one end of the connecting rod 37 is fixedly connected to a spur gear 38 meshing with the arc-shaped rack 35, and the limiting component also includes a ratchet 27 arranged on the top of the auxiliary seat 36, and one end of the connecting rod 37 passes through the outside of the auxiliary seat 36 and is connected to the ratchet 27. 7 is fixedly connected, an auxiliary block 39 is provided on one side of the ratchet 27, an auxiliary rod 40 is fixedly connected to the top of the auxiliary block 39, the outer wall of the auxiliary rod 40 is rotatably connected to a ratchet 41 that meshes with the ratchet 27, a first torsion spring 42 is installed between the auxiliary rod 40 and the ratchet 41, the material-digging unit also includes a connecting column 49 fixedly connected to the bottom of the fixed digging plate 7, one side of the first connecting rod 3 is fixedly connected to the fixed frame 6, and one end of the connecting column 49 penetrates into the interior of the fixed frame 6 and is rotatably connected to a fixed sleeve 50, one end of the fixed sleeve 50 is fixedly connected to two first bevel gears 52, the two first bevel gears 52 are connected by an auxiliary connecting rod, and the directions of the two first bevel gears 52 are arranged oppositely, a second torsion spring 51 is installed between one of the first bevel gears 52 and the connecting column 49, one end of the auxiliary shaft 54 ​​penetrates into the interior of the fixed frame 6 and is fixedly connected to a second bevel gear 53 that meshes with the first bevel gear 52, and the meshing teeth of the second bevel gear 53 are only half; When there are wires in the embedded pipe, but more wires need to be threaded, when the threading head 1 is inserted into the embedded pipe, the arc of each fixed toggle plate 7 and the movable toggle plate 8 is in a maximum limit state of seventy degrees. At this time, there is a small gap between one end of the movable toggle plate 8 and the other first connecting rod 3. When the fixed toggle plate 7 and the movable toggle plate 8 are adjusted from the maximum angle, each movable toggle plate 8 contacts an adjacent first connecting rod 3 as the angle changes, which will squeeze the movable toggle plate 8. At this time, the movable toggle plate 8 The first arc spring 48 is squeezed, and while the movable toggle plate 8 moves toward the inside of the fixed toggle plate 7, the spur gear 38 is driven to rotate through the arc rack 35, and the spur gear 38 drives the ratchet 27 to rotate through the connecting rotating rod 37. At this time, the rotation direction of the ratchet 27 drives the ratchet 41 to rotate on the auxiliary rod 40. When the movable toggle plate 8 stops moving, the spur gear 38 stops rotating, and the ratchet 41 is stuck in the ratchet 27 slot under the action of the first torsion spring 42, thereby limiting the movable toggle plate 8; When the threading head 1 is threading inside the embedded pipe, the roller 5 initially abuts against the inner wall of the embedded pipe. As the threading head 1 moves, the roller 5 rolls with the friction of the embedded pipe, and the second bevel gear 53 is driven to rotate through the auxiliary shaft 54. When the outer wall bevel teeth of the second bevel gear 53 mesh with the first bevel gear 52, the fixed sleeve 50 is driven to rotate. The fixed sleeve 50 drives the connecting column 49 to rotate under the action of the second torsion spring 51, thereby driving the fixed toggle plate 7 and the movable toggle plate 8 to rotate in the direction close to the inner wall of the embedded pipe. When the outer wall bevel teeth of the second bevel gear 53 are separated from one of the first bevel gears 52, the outer wall bevel teeth of the second bevel gear 53 will mesh with the other first bevel gear 52, and drive the fixed toggle plate 7 and the movable toggle plate 8 to rotate toward the outer wall of the threading head 1, so that the wires are repeatedly toggled. This repeated toggling action helps the newly inserted wires to pass smoothly between the existing wires, thereby reducing the resistance and difficulty in the threading process. When the fixed toggle plate 7 and the movable toggle plate 8 encounter greater resistance during their rotation toward the outer wall of the threading head 1, the connecting column 49 can be rotated relative to the fixed sleeve 50, thereby causing the second torsion spring 51 to twist, thereby ensuring the stability of the rotation of the device, and automatically avoiding greater resistance.

[0039] Reference Figure 10~Figure 15, a reset component is located at the bottom of the threading head 1 and is used to limit the material-digging unit and the adaptive mechanism. The reset component includes a rectangular groove 29 opened on the side wall of the first connecting rod 3, and a moving block 24 is slidably connected to the inner side of the rectangular groove 29. A cylindrical rod 30 is fixedly connected to the top of the moving block 24, and an abutment wheel 31 is rotatably connected to one end of the cylindrical rod 30. An arc-shaped protrusion 28 is fixedly connected to the outer wall of the fixed rotating rod 23. A fourth elastic component 33 is installed between the moving block 24 and the rectangular groove 29. A first abutment block 32 is fixedly connected to the bottom of the moving block 24. The reset component also includes A connecting seat 46 is fixedly connected to the top of the fixed toggle plate 7, a first abutting rod 44 abutting against the first abutting block 32 is slidably connected to the inner side of the connecting seat 46, a second abutting block 45 is fixedly connected to one end of the first abutting rod 44, a second arc spring 55 is installed between the connecting seat 46 and the second abutting block 45, an auxiliary elastic component 43 is installed between the bottom of the auxiliary block 39 and the fixed toggle plate 7, the auxiliary block 39 is slidably connected to the top of the fixed toggle plate 7, and a second abutting rod 47 abutting against the second abutting block 45 is fixedly connected to the outer wall of the auxiliary block 39; When the threading head 1 is used in the pre-buried pipe with wires, it is necessary to reset the movable toggle plate 8. It is only necessary to drive the abutment wheel 31 to abut against the arc-shaped protrusion 28 through the first connecting rod 3 while the first connecting rod 3 is reset. When the abutment wheel 31 slowly moves from the lowest point of the arc-shaped protrusion 28 to the highest point of the arc-shaped protrusion 28, the abutment wheel 31 pushes the columnar rod 30, and the columnar rod 30 pushes the moving block 24 to move inside the rectangular groove 29, thereby driving the inclined surface of one end of the first abutment block 32 to move. The first abutting rod 44 abuts against the first abutting rod 44, thereby pushing the first abutting rod 44 to slide inside the connecting seat 46, and pushing the second abutting block 45 to abut against the second abutting rod 47. Under the action of the inclined surface at one end of the second abutting block 45, the second abutting rod 47 is pushed to drive the auxiliary block 39 to slowly move toward the upper side of the fixed toggle plate 7. When the abutting wheel 31 moves to the highest point of the arc-shaped protrusion 28, the ratchet 41 is separated from the ratchet wheel 27, and the movable toggle plate 8 is reset under the action of the first arc spring 48. When the staff still needs to use the threading head 1, when the first connecting rod 3 moves toward the threading head 1 and gathers, when the abutment wheel 31 separates from the highest point of the arc-shaped protrusion 28, the pushing moving block 24 can be moved upward under the action of the fourth elastic component 33, and the first abutment rod 44 is moved toward the first abutment block 32 under the action of the second arc spring 55, thereby driving the ratchet 41 to continue to engage the ratchet 27 under the action of the auxiliary elastic component 43, so that the staff can continue to thread the thread, which ensures that the movable toggle plate 8 can be in the correct position when the threading head 1 is used next time, ready for a new threading task.

[0040] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. An adaptive embedded pipe diameter threading device, characterized in that: include: A threading head (1), wherein a connection hole (2) is formed at the top end of the threading head (1); A first connecting rod (3), wherein a plurality of the first connecting rods (3) are provided, and the plurality of the first connecting rods (3) are arranged in a circular array on the outer wall of the threading head (1); An adaptive mechanism, located on the outer wall of the threading head (1), and used to enable the threading head (1) to adapt to the inner diameters of pre-buried pipes of different sizes; A material moving unit, located at the end of the first connecting rod (3), used for moving the electric wires in the embedded pipe; A reset component is located at the bottom of the threading head (1) and is used to limit the position of the material shifting unit and the adaptive mechanism.

2. The self-adaptive embedded pipe diameter threading device according to claim 1, characterized in that: The adaptive mechanism comprises a plurality of limit slots (9) provided on the outer wall of the threading head (1), the number of the limit slots (9) matching that of the first connecting rod (3), the inner side of each limit slot (9) being fixedly connected to a fixed rotating rod (23), the first connecting rod (3) being rotatably connected to the outer wall of the fixed rotating rod (23), the inner side of the first connecting rod (3) being rotatably connected to an auxiliary shaft (54), the outer wall of the auxiliary shaft (54) being fixedly connected to a roller (5), and the inner side of the first connecting rod (3) being provided with a second connecting rod (4), The second connecting rod (4) is rotatably connected to the outer wall of the auxiliary shaft (54); a trapezoidal block (19) is slidably connected to the inner side of the limiting groove (9); a side wall of the trapezoidal block (19) is fixedly connected to a limiting seat (18); an end of the second connecting rod (4) away from the roller (5) is rotatably connected to the limiting seat (18) via a rotating shaft; a third elastic component (26) is installed between the trapezoidal block (19) and the limiting groove (9); and an auxiliary component for limiting the trapezoidal block (19) is provided on one side of the trapezoidal block (19).

3. The self-adaptive embedded pipe diameter threading device according to claim 2, characterized in that: The auxiliary component comprises an internal rotating rod (10) rotatably connected to the inside of the threading head (1); a fixing rod (12) is fixedly connected to the bottom of the internal rotating rod (10); an insertion rod (13) is slidably connected to the bottom of the fixing rod (12); a first elastic component (14) is installed between the fixing rod (12) and the insertion rod (13); two circular limiting holes (15) are provided at the bottom of the threading head (1), and one end of the insertion rod (13) passes through the fixing rod (12) and extends into one of the circular limiting holes (15); a plurality of connecting rods (16) are fixedly connected to the outer wall of the internal rotating rod (10); one end of each of the plurality of connecting rods (16) is fixedly connected to an extrusion rod (11); and a plurality of the limiting grooves (9) are provided with a rotating groove matching the extrusion rod (11) inside.

4. The self-adaptive embedded pipe diameter threading device according to claim 3, characterized in that: The auxiliary component further comprises a rebound groove (20) provided on the side wall of the trapezoidal block (19); a limit block (21) is slidably connected to the inner side of the rebound groove (20); a slider matching the rebound groove (20) is fixedly connected to the back of the limit block (21); and a second elastic component (22) is respectively installed between the two ends of the slider and the rebound groove (20); a plurality of arc-shaped grooves (17) are provided on the side wall of the extrusion rod (11); and an arc-shaped groove matching the arc-shaped groove (17) is provided on the side wall of the limit block (21).

5. The self-adaptive embedded pipe diameter threading device according to claim 4, characterized in that: The material shifting unit comprises fixed seats (25) respectively fixedly connected to one side of a plurality of the first connecting rods (3); a fixed shifting plate (7) is rotatably connected to the inner side of each of the fixed seats (25); a movable shifting plate (8) is slidably connected to the interior of the fixed shifting plate (7); a first arc spring (48) is installed between the fixed shifting plate (7) and the movable shifting plate (8); and a limiting component for limiting the movement of the movable shifting plate (8) is provided on the top of the fixed shifting plate (7).

6. The self-adaptive embedded pipe diameter threading device according to claim 5, characterized in that: The limiting component comprises an engagement groove (34) formed on the top of the movable toggle plate (8), an arc-shaped rack (35) being fixedly connected to the inner side of the engagement groove (34), an auxiliary seat (36) being fixedly connected to the top of the fixed toggle plate (7), a connecting rod (37) being rotatably connected to the bottom of the auxiliary seat (36), and a spur gear (38) meshing with the arc-shaped rack (35) being fixedly connected to one end of the connecting rod (37).

7. The self-adaptive embedded pipe diameter threading device according to claim 6, characterized in that: The limiting component also includes a ratchet (27) arranged on the top of the auxiliary seat (36), and one end of the connecting rotating rod (37) passes through the outside of the auxiliary seat (36) and is fixedly connected to the ratchet (27), an auxiliary block (39) is arranged on one side of the ratchet (27), the top of the auxiliary block (39) is fixedly connected to an auxiliary rod (40), the outer wall of the auxiliary rod (40) is rotatably connected to a ratchet (41) that meshes with the ratchet (27), and a first torsion spring (42) is installed between the auxiliary rod (40) and the ratchet (41).

8. The self-adaptive embedded pipe diameter threading device according to claim 7, characterized in that: The material shifting unit further comprises a connecting column (49) fixedly connected to the bottom of the fixed shifting plate (7); one side of the first connecting rod (3) is fixedly connected to a fixed frame (6); one end of the connecting column (49) penetrates into the interior of the fixed frame (6) and is rotatably connected to a fixed sleeve (50); one end of the fixed sleeve (50) is fixedly connected to two first bevel gears (52); the two first bevel gears (52) are connected via an auxiliary connecting rod; the two first bevel gears (52) are arranged in opposite directions; a second torsion spring (51) is installed between one of the first bevel gears (52) and the connecting column (49); one end of the auxiliary shaft (54) penetrates into the interior of the fixed frame (6) and is fixedly connected to a second bevel gear (53) meshing with the first bevel gear (52); and the meshing teeth of the second bevel gear (53) are only half.

9. The self-adaptive embedded pipe diameter threading device according to claim 8, characterized in that: The reset assembly comprises a rectangular groove (29) formed on a side wall of the first connecting rod (3); a moving block (24) is slidably connected to the inner side of the rectangular groove (29); a columnar rod (30) is fixedly connected to the top of the moving block (24); one end of the columnar rod (30) is rotatably connected to an abutment wheel (31); an arc-shaped protrusion (28) is fixedly connected to the outer wall of the fixed rotating rod (23); a fourth elastic component (33) is installed between the moving block (24) and the rectangular groove (29); and a first abutment block (32) is fixedly connected to the bottom of the moving block (24).

10. The self-adaptive embedded pipe diameter threading device according to claim 9, characterized in that: The reset assembly further comprises a connection seat (46) fixedly connected to the top of the fixed toggle plate (7); a first abutting rod (44) abutting against the first abutting block (32) is slidably connected to the inner side of the connection seat (46); a second abutting block (45) is fixedly connected to one end of the first abutting rod (44); a second arc spring (55) is installed between the connection seat (46) and the second abutting block (45); an auxiliary elastic component (43) is installed between the bottom of the auxiliary block (39) and the fixed toggle plate (7); the auxiliary block (39) is slidably connected to the top of the fixed toggle plate (7); and a second abutting rod (47) abutting against the second abutting block (45) is fixedly connected to the outer wall of the auxiliary block (39).

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