Aluminum alloy conductor rubber sheathed flexible cable for shield machine and preparation method thereof

Abstract

The present invention belongs to the technical field of rubber sheathed cable production, and in particular to an aluminum alloy conductor rubber sheathed flexible cable for a shield machine and a preparation method thereof. Aiming at the problem in the prior art that the cable is easily loosened during the forward stage after the cable flame retardant tape is wound, the following scheme is proposed, including a cable body, the cable body includes an outer skin of rubber material, and the circumferential outer wall of the outer skin is reserved with wear-resistant ribs, the wear-resistant ribs are in a spiral structure as a whole, the middle of the cable body is an insulating card strip, and the insulating card strip is in a prismatic structure as a whole, the outer wall of the insulating card strip is provided with a plurality of equally spaced card slots, and each card slot is clamped with a protective sleeve. The present invention can quickly attach the unwound steel belt to the outer wall of the cable body, and cooperate with a symmetrical mechanism arranged on the upper surface of the mounting table, so that the outer wall of the cable body can be attached with symmetrical steel belts to improve the overall tensile performance after later extrusion.

Description

Technical Field

[0001] The invention relates to the technical field of rubber sheathed cable production, and in particular to an aluminum alloy conductor rubber sheathed flexible cable for a shield machine and a preparation method thereof. Background Art

[0002] Cables are usually composed of several or several groups of wires. Cables include power cables, control cables, compensation cables, shielded cables, high-temperature cables, etc. They are all composed of single or multiple strands of wires and insulation layers, used to connect circuits, electrical appliances, etc. Wires and cables are measured in length. All wires and cables start with conductor processing, and insulation, shielding, cabling, sheathing, etc. are added layer by layer on the outside of the conductor to make wire and cable products. The more complex the product structure, the more layers are superimposed.

[0003] With the rapid development of underground power cable laying projects, higher requirements are put forward for the production of cables. Although the existing flexible mineral insulated fire-resistant cables have been strengthened in terms of insulation and fire resistance, the current practice is to wrap a flame retardant tape around its outer wall and then enter the extruder to wrap the rubber. This method of directly wrapping the flame retardant tape on the outer wall will inevitably loosen or collapse after a long production line, resulting in rubber infiltration in the later stage, affecting the fire resistance. Summary of the invention

[0004] In view of the technical problem in the prior art that the cable flame retardant tape is easily wound loosely in the forward stage after being wound, the present invention adopts the following technical solution:

[0005] A shield machine aluminum alloy conductor rubber sheathed soft cable, including a cable body, the cable body including an outer skin of rubber material, and the circumferential outer wall of the outer skin is reserved with wear-resistant ribs, the wear-resistant ribs are in a spiral structure as a whole, the middle of the cable body is an insulating card strip, and the insulating card strip is in a prismatic structure as a whole, the outer wall of the insulating card strip is provided with a plurality of equally distributed card slots, and each card slot is clamped with a protective sleeve, the interior of the protective sleeve is provided with an insulating layer, and the interior of the insulating layer is a conductive core wire; the interior of the insulating card strip is interspersed with a tensile steel wire core, and a plurality of protective sleeves are wrapped with a flame retardant layer on their outer wall before entering a cable extruder, and the outer wall of the flame retardant layer is adhered with steel wire; and then enter the cable extruder, so that multiple strands of steel wire are evenly arranged inside the outer skin of the outermost layer, thereby increasing the tensile performance of the cable body.

[0006] Preferably, the outer walls of the plurality of protective sleeves fixed together are filled with a flame retardant medium before being wrapped with the flame retardant layer.

[0007] A method for preparing an aluminum alloy conductor rubber sheathed flexible cable for a shield machine comprises the following steps:

[0008] S1: First, a single conductive core wire is twisted to form a conductive core wire with a thicker diameter, and then the conductive core wire is extruded by a cable extruder to form an outer skin, that is, an insulating layer is wrapped, and then a protective cover is put on;

[0009] S2: Assemble multiple formed single conductive core wires with protective sleeves and insulating clips, and then enter the wrapping winding machine to wrap the outer wall with flame retardant tape, and then pass through the tape sticking machine to stick the steel tape on the steel wire reel to the outer wall of the cable body wrapped with flame retardant tape;

[0010] S3: Finally, the cable enters the cable extruder to form a cable body with wear-resistant ribs.

[0011] Preferably, the tape attaching machine in S2 comprises a mounting table fixed below the cable body in the production line, the mechanisms arranged above the mounting table are symmetrically distributed, and a T-shaped fixed slide extending toward the middle is fixed on the upper surface of the mounting table near the front, a grooved slide frame is slidably connected to the upper surface of the T-shaped fixed slide, and a C-shaped roller frame is fixed to the top of the grooved slide frame at one end near the cable body, a concave pressure wheel tightly attached to the cable body is arranged on the side of the C-shaped roller frame close to the cable body; a tightening mechanism is also arranged on the side of the C-shaped roller frame away from the cable body; a wire roll placement rack is fixed on the upper surface of the mounting table near one end, and a wire roll placement rack is fixed on the upper surface of the mounting table near one end, and a wire roll placement rack is fixed on the upper surface of the mounting table near one end. The wire roll placement rack includes two parallel and vertical side guard plates, the top ends of the two side guard plates are respectively provided with the same oblique slots, the same rotatable wire reel is clamped between the two oblique slots, the outer wall of the wire reel is wrapped with a steel belt for sticking to the outer wall of the cable body, and a vertical reversing guide wheel is arranged on the upper surface of the mounting platform between the concave pressure wheel and the wire roll placement rack; an L-shaped support frame is fixed on the upper surface of the mounting platform near the end, and a glue squeezing device is arranged on the top end of the L-shaped support frame; the glue squeezing device includes a sealant barrel fixed on the top end of the L-shaped support frame, a gap is reserved at the bottom end of the sealant barrel, and the gap is located directly above the steel belt.

[0012] Preferably, a bearing seat is fixed to the side surface of one of the side guard plates near the bottom of the oblique slot, and a hexagonal shaft tube is rotatably connected to the bearing seat, a ratchet is fixed to the end of the hexagonal shaft tube away from the wire reel, and a fixed ring frame is fixed to the surface of the side guard plate close to the ratchet, an axial hole with the axis facing the center of the ratchet is opened at the top of the fixed ring frame, and a back-stop push rod is slidably inserted in the axial hole, a spring retaining ring is fixed to the circumferential outer wall of the back-stop push rod near the top, and a spring is fixed between the lower surface of the spring retaining ring and the upper surface of the fixed ring frame, and the top of the back-stop push rod is provided with an oblique section that engages with the outer wall of the ratchet; a hexagonal insertion hole is opened in the middle of the wire reel, and a hexagonal rod connected to the hexagonal shaft tube is slidably inserted in the hexagonal insertion hole.

[0013] Preferably, a vertical baffle is fixed to one end of the upper surface of the groove-shaped sliding frame close to the C-shaped roller frame, and a compression spring is fixed to one end of the vertical baffle away from the C-shaped roller frame, and a vertical ear plate is fixed to one end of the upper surface of the T-shaped fixed slide away from the cable body, and a screw hole is opened on the ear plate, an adjusting screw is threaded in the screw hole, and the other end of the compression spring is fixed to the end of the adjusting screw; the adjusting screw and the compression spring constitute a tightening mechanism.

[0014] Preferably, an extension shaft is fixed to the top of the top roller head of the concave pressure wheel, and the top of the extension shaft is sleeved with a driven gear, a shaft rod seat is fixed to the back side of the C-shaped roller frame near the top, and a short shaft rod is rotatably connected to the middle of the shaft rod seat, and a driving gear meshing with the driven gear is fixed to the top of the short shaft rod, and a rotating rod is fixed to the bottom end of the short shaft, and the lower surface of the rotating rod is rotatably connected to the connecting rod at one end away from the short shaft; an H-shaped bracket is fixed to the top of the groove-type sliding frame, and a piston inflation cylinder with an opening facing the driven gear is fixed to the top of the H-shaped bracket; a piston disk is slidably connected to the inside of the piston inflation cylinder; and the other end of the connecting rod is hinged on the surface of the piston disk; a one-way air outlet valve is fixed to the bottom of the piston inflation cylinder, and the air outlet of the one-way air outlet valve is connected to an air supply pipe, and the other end of the air supply pipe is plugged into the top of the sealing rubber barrel; the sealing rubber barrel with pneumatic glue discharge is set, not only the capacity can be increased, but also the later cleaning of the inside of the sealing rubber barrel is convenient.

[0015] Preferably, a feeding port is reserved at the top of the sealing glue barrel, a sealing cover is screwed on the top of the feeding port, and a squeezing rubber bubble is also provided at the top of the sealing glue barrel; by providing the squeezing rubber bubble, pressure can be applied to the inside of the sealing glue barrel by pressing the squeezing rubber bubble when the steel wire is just being pulled out, and then the required amount of glue can be squeezed out as needed.

[0016] Preferably, the bottom end of the sealant barrel is configured to be a conical structure, and bristles are fixed to the bottom end of the sealant barrel near the gap, so that the surface of the steel wire can be evenly coated with glue.

[0017] Preferably, an L-shaped auxiliary frame is fixed to the side of the L-shaped support frame near the top, and a rotation hole adapted to the top of the reversing guide wheel is opened on the lower surface of the L-shaped auxiliary frame to ensure that the reversing guide wheel can rotate vertically after being subjected to force.

[0018] The beneficial effects of the present invention are:

[0019] 1. Through the sealant barrel and the concave pressure wheel close to the outer wall of the cable body, the unwound steel belt can be quickly attached to the outer wall of the cable body. With the symmetrical mechanism set on the upper surface of the mounting table, the outer wall of the cable body can be attached with symmetrical steel belts to improve the overall tensile performance after extrusion.

[0020] 2. By setting the beveled anti-retraction rod, the steel wire rope can always maintain a certain tension when unwinding, which helps to stick it tightly to the outer wall of the cable body and prevent the winding phenomenon caused by the unwinding speed being too fast.

[0021] 3. Through the set tightening mechanism, the concave pressure wheel slidably connected to the T-shaped fixed slide can always be tightly attached to the outer wall of the cable body, and the degree of tightening can be adjusted as needed to prevent the steel belt from deviating from the center and slipping. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the cross-sectional structure of an aluminum alloy conductor rubber sheathed flexible cable for a shield machine proposed by the present invention;

[0023] Figure 2 This is a schematic diagram of the overall structure of the equipment used in the method for preparing an aluminum alloy conductor rubber sheathed flexible cable for a shield machine proposed in the present invention;

[0024] Figure 3 This is a schematic diagram of the front structure of the equipment used in the method for preparing an aluminum alloy conductor rubber sheathed flexible cable for a shield machine proposed in the present invention;

[0025] Figure 4 This is a front view of the equipment used in the method for preparing the aluminum alloy conductor rubber sheathed flexible cable for a shield machine proposed by the present invention;

[0026] Figure 5 It is a structural schematic diagram of the glue squeezing mechanism proposed by the present invention;

[0027] Figure 6 This is a schematic diagram of the structure of the wire coil placement rack proposed by the present invention;

[0028] Figure 7 This is a schematic diagram of the assembly structure of the pressure wheel proposed by the present invention.

[0029] In the figure: 1. Cable body; 101. Protective cover; 102. Steel wire; 103. Insulation layer; 104. Conductive core wire; 105. Insulation card strip; 106. Wear-resistant rib strip; 2. Mounting table; 3. L-shaped support frame; 4. Sealant barrel; 401. Brush; 402. Squeeze rubber bubble; 5. Driven gear; 6. Piston inflator; 7. Air pipe; 8. Wire roll placement rack; 801. Oblique card slot; 802. Hexagonal rod; 803. 03. Bearing seat; 9. Reversing guide wheel; 10. Tensile steel wire core; 11. Flame retardant belt; 12. Ratchet; 13. Back-stop push rod; 14. Fixed ring frame; 15. Wire reel; 151. Hexagonal socket; 16. Adjusting screw; 17. T-shaped fixed slide; 18. Grooved slide frame; 19. Concave pressure wheel; 20. L-shaped auxiliary frame; 21. C-shaped roller frame; 2101. Shaft rod seat; 2102. Turn rod; 22. Compression spring. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] Reference Figure 1-2 A shield machine aluminum alloy conductor rubber sheathed soft cable comprises a cable body 1, the cable body 1 comprises an outer skin of rubber material, and the circumferential outer wall of the outer skin is reserved with wear-resistant ribs 106, the wear-resistant ribs 106 are in a spiral structure as a whole, the middle of the cable body 1 is an insulating card strip 105, and the insulating card strip 105 is in a prismatic structure as a whole, the outer wall of the insulating card strip 105 is provided with a plurality of equally distributed card slots, and each card slot is clamped with a protective sleeve 101, the interior of the protective sleeve 101 is provided with an insulating layer 103, and the interior of the insulating layer 103 is a conductive core wire 104; the interior of the insulating card strip 105 is interspersed with a tensile steel wire core 10, and the outer wall of the plurality of protective sleeves 101 is wrapped with a flame retardant layer before entering a cable extruder, and the outer wall of the flame retardant layer is adhered with steel wires 102; and then enters the cable extruder, so that the inner part of the outermost outer skin is evenly arranged with a plurality of steel wires 102, thereby increasing the tensile performance of the cable body 1.

[0032] The outer walls of the plurality of protective covers 101 fixed together are filled with a flame retardant medium before being wrapped with the flame retardant layer.

[0033] Please refer to Figure 1-7 A method for preparing an aluminum alloy conductor rubber sheathed flexible cable for a shield machine comprises the following steps:

[0034] S1: First, a single conductive core wire 104 is twisted to form a conductive core wire 104 with a relatively thick diameter, and then the conductive core wire 104 is subjected to a cable extruder to form an outer skin, that is, an insulating layer 103 is wrapped on the conductive core wire 104, and then a protective cover 101 is put on;

[0035] S2: assembling a plurality of formed single conductive core wires 104 with protective sleeves 101 and insulating clamping strips 105, and then entering a wrapping and winding machine to wrap the outer wall with a flame retardant tape 11, and then passing through a tape sticking machine to stick the steel tape on the steel wire reel 15 to the outer wall of the cable body 1 wrapped with the flame retardant tape 11;

[0036] S2: Finally, the cable enters the cable extruder to form a molded cable body 1 with wear-resistant ribs 106.

[0037] Please refer to Figure 1-7The taping machine in S2 includes a mounting table 2 fixed below the cable body 1 in the production line, the mechanisms arranged above the mounting table 2 are symmetrically distributed, and a T-shaped fixed slide 17 extending toward the middle is fixed on the upper surface of the mounting table 2 near the front, a groove-type slide frame 18 is slidably connected to the upper surface of the T-shaped fixed slide 17, and a C-shaped roller frame 21 is fixed to the top end of the groove-type slide frame 18 near the cable body 1, and a concave pressure wheel 19 close to the cable body 1 is arranged on the side of the C-shaped roller frame 21 near the cable body 1; a tightening mechanism is also arranged on the side of the C-shaped roller frame 21 away from the cable body 1; a wire roll placement rack 8 is fixed on the upper surface of the mounting table 2 near one end, and the wire roll placement rack 8 includes two parallel and vertical side guard plates, the tops of the two side guard plates are respectively provided with the same oblique card groove 801, and the same card groove 801 is clamped between the two oblique card grooves 801. A rotatable wire reel 15, the outer wall of which is wound with a steel belt for sticking to the outer wall of the cable body 1, and a vertical reversing guide wheel 9 is provided on the upper surface of the mounting platform 2 between the concave pressure wheel 19 and the wire roll placement frame 8; an L-shaped support frame 3 is fixed to the upper surface of the mounting platform 2 near the end, and a glue squeezing device is provided at the top of the L-shaped support frame 3; the glue squeezing device comprises a sealing rubber barrel 4 fixed to the top of the L-shaped support frame 3, a gap is reserved at the bottom end of the sealing rubber barrel 4, and the gap is located directly above the steel belt; through the setting of the sealing rubber barrel 4 and the concave pressure wheel 19 that is close to the outer wall of the cable body 1, the unwound steel belt can be quickly stuck to the outer wall of the cable body 1, and with the symmetrical mechanism set on the upper surface of the mounting platform 2, the outer wall of the cable body 1 can be stuck with symmetrical steel belts to improve the overall tensile performance after later extrusion.

[0038] Please refer to Figure 6 A bearing seat 803 is fixed to the side of one of the side guard plates near the bottom of the oblique slot 801, and a hexagonal shaft tube is rotatably connected to the bearing seat 803, a ratchet 12 is fixed to the end of the hexagonal shaft tube away from the wire reel 15, and a fixed ring frame 14 is fixed to the surface of the side guard plate near the ratchet 12, an axial hole with the axis facing the center of the ratchet 12 is opened at the top of the fixed ring frame 14, and a back-stopping push rod 13 is slidably inserted in the axial hole, a spring retaining ring is fixed to the circumferential outer wall of the back-stopping push rod 13 near the top, and the lower surface of the spring retaining ring is connected to the A spring is fixed between the upper surfaces of the fixed ring frame 14, and the top of the anti-retraction push rod 13 is provided with an oblique section that engages with the outer wall of the ratchet 12; a penetrating hexagonal socket 151 is provided in the middle of the wire reel 15, and a hexagonal rod 802 connected to the hexagonal shaft tube is slidably inserted in the hexagonal socket 151; by setting the anti-retraction push rod 13 with an oblique section, the steel wire rope can always maintain a certain tension when unwinding, thereby helping to tightly stick it to the outer wall of the cable body 1 and preventing the occurrence of entanglement due to excessive unwinding speed.

[0039] Please refer to Figure 3 and Figure 7 A vertical baffle is fixed to one end of the upper surface of the grooved slide frame 18 close to the C-shaped roller frame 21, and a compression spring 22 is fixed to one end of the vertical baffle away from the C-shaped roller frame 21, and a vertical ear plate is fixed to one end of the upper surface of the T-shaped fixed slide 17 away from the cable body 1, and a screw hole is opened on the ear plate, and an adjusting screw 16 is screwed in the screw hole, and the other end of the compression spring 22 is fixed to the end of the adjusting screw 16; the adjusting screw 16 and the compression spring 22 constitute a tightening mechanism, through which the concave pressure wheel 19 slidably connected to the T-shaped fixed slide 17 can always be tightly attached to the outer wall of the cable body 1, and the degree of tightening can be adjusted as needed to prevent the steel belt from deviating from the center and slipping.

[0040] Please refer to Figure 3-5 The top roller head of the concave pressure wheel 19 is fixed with an extension shaft, and the top of the extension shaft is sleeved with a driven gear 5. The back of the C-shaped roller frame 21 is fixed with a shaft seat 2101 near the top, and the middle of the shaft seat 2101 is rotatably connected with a short shaft, and the top of the short shaft is fixed with a driving gear meshing with the driven gear 5. The bottom end of the short shaft is fixed with a rotating rod 2102, and the lower surface of the rotating rod 2102 is rotatably connected with a connecting rod at one end away from the short shaft; the top of the grooved sliding frame 18 is fixed with an H-shaped bracket, A piston air cylinder 6 with its opening facing the driven gear 5 is fixed to the top of the H-shaped bracket; a piston disk is slidably connected to the inside of the piston air cylinder 6; and the other end of the connecting rod is hinged on the surface of the piston disk; a one-way air outlet valve is fixed to the bottom of the piston air cylinder 6, and the air outlet of the one-way air outlet valve is connected to an air supply pipe 7, and the other end of the air supply pipe 7 is plugged into the top of the sealing rubber barrel 4; by setting up the air pressure-type glue-discharging sealing rubber barrel 4, not only the capacity can be increased, but also the later cleaning of the inside of the sealing rubber barrel 4 is convenient.

[0041] Please refer to Figure 5 A feeding port is reserved at the top of the sealing glue barrel 4, a sealing cover is screwed on the top of the feeding port, and a squeezing rubber bubble 402 is also provided at the top of the sealing glue barrel 4; by providing the squeezing rubber bubble 402, when the steel wire is just being pulled out, pressure can be applied to the inside of the sealing glue barrel 4 by pressing the squeezing rubber bubble 402, and then the required amount of glue can be squeezed out as needed.

[0042] Please refer to Figure 5 The bottom end of the sealant barrel 4 is set to a conical structure, and a brush 401 is fixed to the bottom end of the sealant barrel 4 near the gap; the surface of the steel wire can be evenly coated with glue.

[0043] Please refer to Figure 3-4 An L-shaped auxiliary frame 20 is fixed to the side of the L-shaped support frame 3 near the top, and a rotation hole is opened on the lower surface of the L-shaped auxiliary frame 20 to match the top of the reversing guide wheel 9; ensuring that the reversing guide wheel 9 can rotate vertically after being subjected to force.

[0044] When the tape attaching machine is in use, the wire reel 15 wound with the steel wire is first placed on the wire reel placement rack 8, and the hexagonal rod 802 is used to sequentially cross the hexagonal shaft tube and the hexagonal insertion hole 151, and then the head of the steel wire is drawn out, and it passes around the bottom end of the sealant barrel 4, the side of the reversing guide wheel 9, and then passes through the concave pressure wheel 19 on the side to the surface of the cable body 1, that is, the unwound steel wire is quickly attached to the outer wall of the cable body 1, and in conjunction with the symmetrical mechanism arranged on the upper surface of the mounting table 2, the outer wall of the cable body 1 can be attached with symmetrical steel wires to improve the overall tensile strength after subsequent extrusion.

[0045] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A method for preparing an aluminum alloy conductor rubber sheathed flexible cable for a shield machine, characterized in that: The cable body (1) comprises an outer skin made of rubber material, and a wear-resistant rib (106) is reserved on the circumferential outer wall of the outer skin, and the wear-resistant rib (106) is in a spiral structure as a whole. The middle of the cable body (1) is an insulating clip (105), and the insulating clip (105) is in a prismatic structure as a whole. The outer wall of the insulating clip (105) is provided with a plurality of slots distributed at equal distances, and a protective sleeve (101) is clamped in each slot, and an insulating layer (103) is arranged inside the protective sleeve (101), and the inside of the insulating layer (103) is a conductive core wire (104); a tensile steel wire core (10) is inserted inside the insulating clip (105), and a plurality of protective sleeves (101) are wrapped with a flame retardant layer on their outer wall before entering a cable extruder, and the outer wall of the flame retardant layer is bonded with steel wire (102); and then enter the cable extruder, so that a plurality of steel wires (102) are evenly arranged inside the outer skin of the outermost layer; The preparation method comprises the following steps: S1: First, a single conductive core wire (104) is twisted to form a conductive core wire (104) with a relatively large diameter, and then the conductive core wire (104) is subjected to a cable extruder to form an outer skin, i.e., an insulating layer (103) is wrapped around the conductive core wire (104), and then a protective cover (101) is put on the conductive core wire (104); S2: assembling a plurality of formed single conductive core wires (104) with protective sleeves (101) and insulating clamping strips (105), and then entering a wrapping and winding machine to wrap the outer wall of the conductive core wires with a flame retardant tape (11), and then passing through a tape attaching machine to attach the steel tape on the steel wire reel (15) to the outer wall of the cable body (1) wrapped with the flame retardant tape (11); S3: Finally, the cable is fed into a cable extruder to form a cable body (1) with wear-resistant ribs (106); The taping machine in S2 comprises a mounting table (2) fixed below a cable body (1) in the production line, the mechanisms arranged above the mounting table (2) are symmetrically distributed, and a T-shaped fixed slide (17) extending toward the middle is fixed on the upper surface of the mounting table (2) near the front, the upper surface of the T-shaped fixed slide (17) is slidably connected to a groove-shaped slide frame (18), and a C-shaped roller frame (21) is fixed at one end of the top of the groove-shaped slide frame (18) near the cable body (1), and a concave pressure wheel (19) close to the cable body (1) is arranged on the side of the C-shaped roller frame (21) near the cable body (1); a tightening mechanism is also arranged on the side of the C-shaped roller frame (21) away from the cable body (1); a wire roll placement rack (8) is fixed on the upper surface of the mounting table (2) near one end, and The wire roll placement rack (8) comprises two parallel and vertical side guard plates, the top ends of the two side guard plates are respectively provided with the same oblique slots (801), a rotatable wire reel (15) is clamped between the two oblique slots (801), the outer wall of the wire reel (15) is wound with a steel wire belt for being attached to the outer wall of the cable body (1), and a vertical reversing guide wheel (9) is arranged on the upper surface of the mounting platform (2) between the concave pressure wheel (19) and the wire roll placement rack (8); an L-shaped support frame (3) is fixed near the end of the upper surface of the mounting platform (2), and a glue squeezing device is arranged at the top end of the L-shaped support frame (3); the glue squeezing device comprises a sealing glue barrel (4) fixed at the top end of the L-shaped support frame (3), a gap is reserved at the bottom end of the sealing glue barrel (4), and the gap is located directly above the steel wire belt; A bearing seat (803) is fixed to the side of one of the side guard plates near the bottom of the oblique slot (801), and a hexagonal shaft tube is rotatably connected to the bearing seat (803), a ratchet (12) is fixed to the end of the hexagonal shaft tube away from the wire reel (15), and a fixed ring frame (14) is fixed to the surface of the side guard plate near the ratchet (12), a shaft hole with an axis center facing the center of the ratchet (12) is opened at the top of the fixed ring frame (14), and a A spring retaining ring is fixed on the outer circumferential wall of the anti-retraction push rod (13) near the top, and a spring is fixed between the lower surface of the spring retaining ring and the upper surface of the fixed ring frame (14), and a chamfered surface engaging with the outer wall of the ratchet wheel (12) is formed on the top of the anti-retraction push rod (13); a hexagonal insertion hole (151) is formed in the middle of the wire reel (15), and a hexagonal rod (802) connected to the hexagonal shaft tube is slidably inserted in the hexagonal insertion hole (151); A vertical baffle is fixed to one end of the upper surface of the grooved slide frame (18) close to the C-shaped roller frame (21), and a compression spring (22) is fixed to one end of the vertical baffle away from the C-shaped roller frame (21); a vertical ear plate is fixed to one end of the upper surface of the T-shaped fixed slide (17) away from the cable body (1), and a screw hole is formed on the ear plate, an adjusting screw (16) is screwed into the screw hole, and the other end of the compression spring (22) is fixed to the end of the adjusting screw (16); the adjusting screw (16) and the compression spring (22) constitute a tightening mechanism.

2. The method for preparing an aluminum alloy conductor rubber sheathed flexible cable for a shield machine according to claim 1, characterized in that: The outer walls of the plurality of protective sleeves (101) fixed together are filled with a flame retardant medium before being wrapped with the flame retardant layer.

3. The method for preparing an aluminum alloy conductor rubber sheathed flexible cable for a shield machine according to claim 2, characterized in that: An extension shaft is fixed to the top of the top roller head of the concave pressure wheel (19), and a driven gear (5) is sleeved on the top of the extension shaft. A shaft seat (2101) is fixed to the back of the C-shaped roller frame (21) near the top, and a short shaft is rotatably connected to the middle of the shaft seat (2101). A driving gear meshing with the driven gear (5) is fixed to the top of the short shaft. A rotating rod (2102) is fixed to the bottom end of the short shaft, and the lower surface of the rotating rod (2102) is rotatably connected to the end away from the short shaft. A connecting rod is connected; an H-shaped bracket is fixed to the top of the groove-shaped sliding frame (18), and a piston inflation cylinder (6) with an opening facing the driven gear (5) is fixed to the top of the H-shaped bracket; a piston disc is slidably connected to the inside of the piston inflation cylinder (6); and the other end of the connecting rod is hinged to the surface of the piston disc; a one-way air outlet valve is fixed to the bottom of the piston inflation cylinder (6), and the air outlet of the one-way air outlet valve is connected to an air supply pipe (7), and the other end of the air supply pipe (7) is plugged into the top of the sealing rubber barrel (4).

4. The method for preparing an aluminum alloy conductor rubber sheathed flexible cable for a shield machine according to claim 3, characterized in that: A feeding port is reserved at the top of the sealing glue barrel (4), a sealing cover is screwed to the top of the feeding port, and a squeeze rubber bubble (402) is also provided at the top of the sealing glue barrel (4).

5. The method for preparing an aluminum alloy conductor rubber sheathed flexible cable for a shield machine according to claim 4, characterized in that: The bottom end of the sealing glue barrel (4) is configured as a conical structure, and bristles (401) are fixed to the bottom end of the sealing glue barrel (4) near the gap.

6. The method for preparing an aluminum alloy conductor rubber sheathed flexible cable for a shield machine according to claim 5, characterized in that: An L-shaped auxiliary frame (20) is fixed to the side of the L-shaped support frame (3) near the top end, and a rotation hole matching the top end of the reversing guide wheel (9) is formed on the lower surface of the L-shaped auxiliary frame (20).

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