A tension adjustment device and adjustment method for low-temperature flexible cable

Abstract

The present invention relates to the technical field of low-temperature flexible cable production, and discloses a tension adjustment device and adjustment method for low-temperature flexible cables, including a supporting drive mechanism and a plurality of hydraulic telescopic mechanisms, wherein a longitudinal hollow shell fixedly installed at the bottom of an n-shaped support column and having a hollow structure inside is arranged inside the longitudinal hollow shell, a longitudinal telescopic rod placed inside the longitudinal hollow shell and capable of moving downward under the action of liquid pressure, and a second rotating wheel installed directly below the longitudinal telescopic rod and capable of moving longitudinally with the longitudinal telescopic rod. The tension adjustment device and adjustment method for low-temperature flexible cables, when releasing the cable, controls the damping strength of the winch wheel during the rotation process during the release process, and the damping strength can directly act on the tension adjustment of the cable, thereby playing an effective tension adjustment function for the cable. In addition, the device does not cause relative friction to the cable, thereby reducing the degree of damage to the cable.

Description

Technical Field

[0001] The invention relates to the technical field of low-temperature flexible cable production, and in particular to a tension adjustment device and an adjustment method for low-temperature flexible cables. Background Art

[0002] During production, low-temperature flexible cables need to have their tension adjusted.

[0003] For example, the Chinese patent with the publication number "CN106829635B" discloses "a mechanical cable tension adjustment device", whose main structure includes a support plate and support legs fixed on both sides of the bottom surface of the support plate, wherein a group of the support legs is provided with a through-hole structure, the support legs are fixed with a group of fixed limit plates on the inner side of the through-hole structure, the upper surface of the fixed limit plates is provided with a cable groove structure, the support plate is fixed with a group of hollow shells at the position of the group of support legs, a group of electromagnetic controllers are fixed on the outer surface of the hollow shells, the interior of the hollow shells is a hollow structure, and the hollow shells are fixed with a group of iron cores with coils wound on the top of the hollow structure. The mechanical cable tension adjustment device first adjusts the thickness of the cable to make it as uniform as possible, and then changes the tension of the cable by stretching, so that the tension of the cable is uniform. In addition, the device for changing the cable is electromagnetic and controllable.

[0004] However, when the above-mentioned mechanical cable tension adjustment device is actually working, the cable needs to slide on the clamping surfaces of the fixed limit plate and the movable limit plate. Therefore, the cable body needs to be in a relative sliding relationship with the fixed limit plate and the movable limit plate. In other words, the sliding friction will cause damage to the cable body. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a tension adjustment device and an adjustment method for a low-temperature flexible cable. When the cable is paid out, the damping strength of the winch wheel during the rotation process is controlled during the pay-out process. The damping strength can directly act on the tension adjustment of the cable, thereby effectively adjusting the tension of the cable. In addition, the device will not cause relative friction to the cable, thereby reducing the degree of damage to the cable and solving the above-mentioned technical problems.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a tension adjustment device for low-temperature flexible cables, comprising a bottom supporting base plate with a supporting plate installed on the upper surface, a No. 1 shaft body mounting hole arranged in the top area of ​​the supporting plate, a motor fixing sleeve installed on one side of the supporting plate, a component mounting cavity arranged inside the motor fixing sleeve, and a driving motor fixedly installed in the component mounting cavity in a horizontal state, and also comprising a supporting driving mechanism, inside which is arranged an n-shaped supporting column fixedly installed on the other side of the supporting plate, a plurality of No. 1 rotating wheels installed in an array in the n-shaped supporting column and whose top structure protrudes upward relative to the top of the n-shaped supporting column, and a No. 1 horizontal rotating shaft capable of rotating the No. 1 rotating wheel with the rotor of the driving motor; and a plurality of hydraulic telescopic mechanisms, inside which are arranged a longitudinal hollow shell fixedly installed at the bottom of the n-shaped supporting column and having a hollow structure inside, a longitudinal telescopic rod placed inside the longitudinal hollow shell and capable of moving downward under the action of liquid pressure, and a No. 2 rotating wheel installed directly below the longitudinal telescopic rod and capable of moving longitudinally with the longitudinal telescopic rod.

[0007] Preferably, the supporting drive mechanism comprises an n-shaped support column, one end face of the n-shaped support column is provided with a longitudinal fixing plate which is integrally formed with the support column and fixedly mounted on one side of the supporting vertical plate, the bottom of the n-shaped support column is provided with a bottom protruding structure which is integrally formed with the support column, the top area of ​​the n-shaped support column is provided with a plurality of linear array wheel body mounting grooves, the interior of the n-shaped support column is provided with a second shaft body mounting hole which is in a horizontal state and connected to the first shaft body mounting hole, the interior of the n-shaped support column is provided with a second shaft body mounting hole which is in an open state at one end and has a liquid valve installed therein No. 1 liquid flow hole, the interior of the n-shaped support column is provided with a plurality of No. 2 liquid flow holes connecting its bottom space and the No. 1 liquid flow hole, the n-shaped support column is provided with a rotatable No. 1 transverse rotating shaft installed inside the No. 2 shaft body mounting hole through a bearing, the No. 1 transverse rotating shaft is fixedly installed with a No. 1 rotating wheel on the shaft body located inside the wheel body mounting groove, the outer circumferential surface of the No. 1 rotating wheel is embedded with a rubber wear-resistant sleeve, the shaft body of the No. 1 transverse rotating shaft passes through the No. 1 shaft body mounting hole, and one end is fixedly connected to the end of the rotor through a coupling.

[0008] Preferably, the cross section of the n-shaped support column is an n-shaped structure, and the structural radius of the number one rotating wheel is larger than the structural radius of the semicircular structure at the top of the n-shaped support column.

[0009] Preferably, the rubber wear-resistant sleeve is a sleeve ring structure made of rubber material.

[0010] Preferably, the hydraulic telescopic mechanism comprises a longitudinal hollow shell, the top of the longitudinal hollow shell is provided with a transverse fixing plate which is an integral structure with the longitudinal hollow shell and fixedly mounted on the bottom end of the bottom raised structure, the interior of the longitudinal hollow shell is provided with a longitudinal component movable cavity, the top of the longitudinal hollow shell is provided with a No. 3 liquid flow hole which connects the bottom end of the No. 2 liquid flow hole and the top end of the longitudinal component movable cavity, the bottom end of the longitudinal hollow shell is provided with a longitudinal rod body through hole which connects the space below it and the bottom end of the longitudinal component movable cavity, and the longitudinal hollow shell is provided with a longitudinal rod body through hole which connects the space below it and the bottom end of the longitudinal component movable cavity, and the longitudinal hollow shell is located at the longitudinal part A piston plate capable of axially moving along the longitudinal component active cavity is placed inside the active cavity of the longitudinal component, a longitudinal telescopic rod penetrating the through hole of the longitudinal rod body is fixedly installed on the bottom end of the piston plate, a coil spring is sleeved on the outer periphery of the rod body located inside the active cavity of the longitudinal component, a concave active block is fixedly installed on the bottom end of the longitudinal telescopic rod, a No. 3 shaft mounting hole is provided on the vertical surface of the concave active block, a No. 2 transverse rotating shaft capable of rotation is installed in the No. 3 shaft mounting hole through a bearing, and a No. 2 rotating wheel is installed on the shaft body of the No. 2 transverse rotating shaft.

[0011] Preferably, the initial length of the coil spring is greater than the depth of the movable cavity of the longitudinal component.

[0012] Preferably, the structural shape of the longitudinal rod body perforated section is consistent with the structural shape of the longitudinal telescopic rod section, both are polygonal structures, and the structural dimensions of the longitudinal rod body perforated section match the structural dimensions of the longitudinal telescopic rod section.

[0013] Preferably, the bottom structure of the number two rotating wheel protrudes downward relative to the bottom structure of the concave movable block, and the rotation plane of the number two rotating wheel is parallel to the rotation plane of the number one rotating wheel.

[0014] Preferably, S1: the center hole of the winch wheel with the low-temperature flexible cable wound around it is placed on the periphery of the area between the No. 1 rotating wheel and the No. 2 rotating wheel, so that the inner circumference of the winch wheel is in contact with the upper circumference of the No. 1 rotating wheel; S2: a hydraulic pump is used to fill the No. 1 liquid flow hole with liquid, and the liquid enters the movable cavity of the longitudinal component after flowing, exerting a downward force on the piston plate, and under the action of the hydraulic pressure, the No. 2 rotating wheel is in contact with the bottom area of ​​the inner circumference of the winch wheel; S3: at this time, the No. 1 rotating wheel and the No. 2 rotating wheel will form an inner support type sleeve relationship with the center hole of the winch wheel, and the pressure of the liquid is controlled to control the winch wheel to rotate with the center hole. The sliding friction between the rubber wear-resistant sleeves, the sliding friction is the strength of the tension adjustment; S4: start the drive motor, and make the rotation direction of the rotor drive the No. 1 rotating wheel to rotate, and when the No. 1 rotating wheel rotates, it will drive the winch wheel to rotate. It should be noted that when the winch wheel rotates in this state, the cable is in a reeled state; S5: apply traction to one end of the cable, and the traction force will make the cable in a pay-out state. In this state, the rotation direction of the winch wheel is opposite to the rotation direction of the No. 1 rotating wheel. Therefore, the strength required for pulling the cable direction is the sliding friction between the winch wheel and the rubber wear-resistant sleeve when rotating, thereby realizing the tension adjustment of the cable in the pay-out area.

[0015] Compared with the prior art, the present invention provides a tension adjustment device and adjustment method for a low-temperature flexible cable, which has the following beneficial effects:

[0016] When the cable is being paid out, the damping strength of the winch wheel during rotation is controlled during the paying out process. The damping strength can directly act on the tension adjustment of the cable, thereby effectively adjusting the tension of the cable. In addition, the device will not cause relative friction to the cable, thereby reducing the degree of damage to the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A perspective view of the present invention;

[0018] Figure 2 is a three-dimensional cross-sectional view of the present invention;

[0019] Figure 3 It is a three-dimensional diagram of the supporting driving mechanism of the present invention;

[0020] Figure 4 It is a three-dimensional cross-sectional view of the supporting drive mechanism of the present invention;

[0021] Figure 5 It is a three-dimensional diagram of the hydraulic telescopic mechanism of the present invention;

[0022] Figure 6It is a three-dimensional cross-sectional view of the hydraulic telescopic mechanism of the present invention.

[0023] Among them: 1. Bottom support base plate; 2. Support vertical plate; 3. No. 1 shaft body installation hole; 4. Motor fixing sleeve; 5. Component installation cavity; 6. Drive motor; 7. Rotor; 8. Support drive mechanism; 81. N-shaped support column; 82. Longitudinal fixing plate; 83. Bottom raised structure; 84. Wheel body installation groove; 85. No. 2 shaft body installation hole; 86. No. 1 liquid flow hole; 87. No. 2 liquid flow hole; 88. No. 1 horizontal rotation axis; 89 , No. 1 rotating wheel; 810, rubber wear-resistant sleeve; 811, coupling; 9, hydraulic telescopic mechanism; 91, longitudinal hollow shell; 92, transverse fixing plate; 93, longitudinal component movable chamber; 94, No. 3 liquid flow hole; 95, longitudinal rod body perforation; 96, piston plate; 97, longitudinal telescopic rod; 98, spiral spring; 99, concave movable block; 910, No. 3 shaft body mounting hole; 911, No. 2 transverse rotating shaft; 912, No. 2 rotating wheel. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] See also Figure 1 and Figure 2 A tension adjustment device for a low-temperature flexible cable comprises a bottom supporting substrate 1 with a supporting vertical plate 2 installed on the upper surface, a No. 1 shaft mounting hole 3 arranged in the top area of ​​the supporting vertical plate 2, a motor fixing sleeve 4 installed on one side of the supporting vertical plate 2, a component mounting cavity 5 arranged inside the motor fixing sleeve 4, and a driving motor 6 fixedly installed in the component mounting cavity 5 in a horizontal state. The winch wheel for winding up the cable needs to be a drum-shaped structure with a hole-shaped structure in the center.

[0026] To achieve the internal drive relationship of the winch wheel, please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4, it is necessary to set up a supporting drive mechanism 8, which is internally provided with an n-shaped support column 81 fixedly installed on the other side of the supporting vertical plate 2, a plurality of No. 1 rotating wheels 89 installed in an array in the n-shaped support column 81 and with a top structure protruding upward relative to the top of the n-shaped support column 81, and a No. 1 horizontal rotating shaft 88 that enables the No. 1 rotating wheel 89 to rotate with the rotor 7 of the driving motor 6. The center hole of the winch wheel wrapped with the low-temperature flexible cable is placed on the periphery of the area between the No. 1 rotating wheel 89 and the No. 2 rotating wheel 912, so that the inner circumferential surface of the winch wheel is in contact with the upper circumferential surface of the No. 1 rotating wheel 89. At this time, the No. 1 rotating wheel 89 and the No. 2 rotating wheel 912 will form an inner supporting type nesting relationship with the center hole of the winch wheel, thereby realizing an inner supporting type driving relationship for the winch wheel.

[0027] For the specific structure of the supporting drive mechanism 8, please refer to Figure 3 and Figure 4 , including an n-shaped support column 81, one end face of the n-shaped support column 81 is provided with a longitudinal fixing plate 82 which is an integral structure with the n-shaped support column 81 and fixedly installed on one side of the support vertical plate 2, the bottom of the n-shaped support column 81 is provided with a bottom protrusion structure 83 which is an integral structure with the n-shaped support column 81, the top area of ​​the n-shaped support column 81 is provided with a plurality of linear array wheel body mounting grooves 84, the inside of the n-shaped support column 81 is provided with a second shaft body mounting hole 85 which is in a horizontal state and connected to the first shaft body mounting hole 3, the inside of the n-shaped support column 81 is provided with a first liquid flow hole 86 which has one end in an open state and has a liquid valve installed therein, and the inside of the n-shaped support column 81 is provided with a plurality of second liquid flow holes which are connected to the bottom space thereof and the first liquid flow hole 86 87, the n-shaped support column 81 is provided with a rotatable No. 1 transverse rotating shaft 88 installed inside the No. 2 shaft body mounting hole 85 through a bearing, and the No. 1 transverse rotating shaft 88 is fixedly provided with a No. 1 rotating wheel 89 on the shaft body located inside the wheel body mounting groove 84, the cross section of the n-shaped support column 81 is an n-shaped structure, and the structural radius of the No. 1 rotating wheel 89 is larger than the structural radius of the semicircular structure at the top of the n-shaped support column 81, the outer circumferential surface of the No. 1 rotating wheel 89 is embedded with a rubber wear-resistant sleeve 810, and the rubber wear-resistant sleeve 810 is a sleeve ring structure made of rubber material, the shaft body of the No. 1 transverse rotating shaft 88 passes through the No. 1 shaft body mounting hole 3, and one end is fixedly connected to the end of the rotor 7 through a coupling 811.

[0028] For adjustability of tension adjustment, see Figure 1 , Figure 2 , Figure 5 and Figure 6, it is necessary to set up a plurality of hydraulic telescopic mechanisms 9, which are provided with a longitudinal hollow shell 91 fixedly installed at the bottom of the n-shaped support column 81 and having a hollow structure inside, a longitudinal telescopic rod 97 placed inside the longitudinal hollow shell 91 and capable of moving downward under the action of liquid pressure, and a second rotating wheel 912 installed just below the longitudinal telescopic rod 97 and capable of moving longitudinally with the longitudinal telescopic rod 97. A hydraulic pump is used to fill liquid into the first liquid flow hole 86 through the hydraulic pump. After the liquid flows, it enters the movable part of the longitudinal component. Inside the cavity 93, a downward force is applied to the piston plate 96. Under the action of hydraulic pressure, the No. 2 rotating wheel 912 is pressed against the bottom area of ​​the inner circumference of the winch wheel, and then a traction force is applied to one end of the cable. This traction force causes the cable to be in a pay-out state. In this state, the rotation direction of the winch wheel is opposite to the rotation direction of the No. 1 rotating wheel 89. Therefore, the strength required for pulling the cable is the sliding friction between the winch wheel and the rubber wear-resistant sleeve 810 when rotating, thereby achieving tension adjustment of the cable in the pay-out area.

[0029] For the specific structure of the hydraulic telescopic mechanism 9, please refer to Figure 5 and Figure 6, including a longitudinal hollow shell 91, the top of which is provided with a transverse fixing plate 92 which is an integral structure with the longitudinal hollow shell 91 and fixedly mounted on the bottom end of the bottom protruding structure 83, a longitudinal component movable chamber 93 is arranged inside the longitudinal hollow shell 91, a No. 3 liquid flow hole 94 which connects the bottom end of the No. 2 liquid flow hole 87 and the top end of the longitudinal component movable chamber 93 is arranged on the top of the longitudinal hollow shell 91, a longitudinal rod body through hole 95 which connects the space below it and the bottom end of the longitudinal component movable chamber 93 is arranged at the bottom end of the longitudinal hollow shell 91, a piston plate 96 which can move axially along the longitudinal component movable chamber 93 is arranged inside the longitudinal component movable chamber 93 of the longitudinal hollow shell 91, a longitudinal telescopic rod 97 which passes through the longitudinal rod body through hole 95 is fixedly mounted on the bottom end of the piston plate 96, in order to prevent rotation between the components, it is necessary to make the structural appearance of the cross section of the longitudinal rod body through hole 95 consistent with the structural appearance of the cross section of the longitudinal telescopic rod 97 The shapes are consistent and are all polygonal structures, and the structural dimensions of the cross-section of the longitudinal rod body through-hole 95 match the structural dimensions of the cross-section of the longitudinal telescopic rod 97. The longitudinal telescopic rod 97 is provided with a coil spring 98 on the outer periphery of the rod body located inside the longitudinal component active cavity 93. In order to achieve the resetting of the component, it is necessary to make the initial length of the coil spring 98 greater than the depth of the longitudinal component active cavity 93. A concave active block 99 is fixedly installed at the bottom end of the longitudinal telescopic rod 97. A No. 3 shaft body mounting hole 910 is provided on the vertical surface of the concave active block 99. A No. 2 horizontal rotating shaft 911 that can rotate is installed in the No. 3 shaft body mounting hole 910 through a bearing. A No. 2 rotating wheel 912 is installed on the shaft of the No. 2 horizontal rotating shaft 911. The bottom structure of the No. 2 rotating wheel 912 protrudes downward relative to the bottom structure of the concave active block 99, and the rotating plane of the No. 2 rotating wheel 912 is parallel to the rotating plane of the No. 1 rotating wheel 89.

[0030] When in use, follow the following steps: S1: Place the center hole of the winch wheel with the low-temperature flexible cable wrapped around it on the periphery of the area between the No. 1 rotating wheel 89 and the No. 2 rotating wheel 912, so that the inner circumference of the winch wheel is in contact with the upper circumference of the No. 1 rotating wheel 89; S2: Use a hydraulic pump to fill the No. 1 liquid flow hole 86 with liquid, and after the liquid flows, it enters the interior of the longitudinal component active cavity 93, exerts a downward force on the piston plate 96, and under the action of the hydraulic pressure, the No. 2 rotating wheel 912 is in contact with the bottom area of ​​the inner circumference of the winch wheel; S3: At this time, the No. 1 rotating wheel 89 and the No. 2 rotating wheel 912 will form an inner support type sleeve relationship with the center hole of the winch wheel, and control the pressure of the liquid, thereby controlling The sliding friction between the winch wheel and the rubber wear-resistant sleeve 810 when it rotates is the strength of the tension adjustment; S4: Start the drive motor 6, and make the rotation direction of the rotor 7 drive the No. 1 rotating wheel 89 to rotate, and the No. 1 rotating wheel 89 will drive the winch wheel to rotate when it rotates. It should be noted that when the winch wheel rotates in this state, the cable is in a reeled state; S5: Apply traction to one end of the cable, and the traction will make the cable in a pay-out state. In this state, the rotation direction of the winch wheel is opposite to the rotation direction of the No. 1 rotating wheel 89. Therefore, the strength required for pulling the cable direction is the sliding friction between the winch wheel and the rubber wear-resistant sleeve 810 when it rotates, so as to achieve the tension adjustment of the cable in the pay-out area.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tension adjustment device for a low-temperature flexible cable, comprising a bottom support base plate (1) with a support plate (2) mounted on the upper surface, a first shaft mounting hole (3) arranged in the top area of ​​the support plate (2), a motor fixing sleeve (4) mounted on one side of the support plate (2), a component mounting cavity (5) arranged inside the motor fixing sleeve (4), and a drive motor (6) fixedly mounted in the component mounting cavity (5) in a horizontal state, characterized in that: Also includes, A support-type driving mechanism (8), wherein an n-shaped supporting column (81) is fixedly mounted on the other side of the supporting vertical plate (2), a plurality of first rotating wheels (89) are mounted in an array in the n-shaped supporting column (81) and the top structure of which protrudes upward relative to the top of the n-shaped supporting column (81), and a first transverse rotating shaft (88) capable of causing the first rotating wheel (89) to rotate along with the rotor (7) of the driving motor (6); and a plurality of hydraulic telescopic mechanisms (9), wherein a longitudinal hollow shell (91) is fixedly mounted at the bottom of the n-shaped support column (81) and has a hollow structure inside, a longitudinal telescopic rod (97) is placed inside the longitudinal hollow shell (91) and can move downward under the action of liquid pressure, and a second rotating wheel (912) is installed directly below the longitudinal telescopic rod (97) and can move longitudinally with the longitudinal telescopic rod (97); The support-type drive mechanism (8) comprises an n-shaped support column (81), one end surface of the n-shaped support column (81) is provided with a longitudinal fixing plate (82) which is integrally structured with the n-shaped support column (81) and fixedly mounted on one side of the support vertical plate (2), the bottom of the n-shaped support column (81) is provided with a bottom protruding structure (83) which is integrally structured with the n-shaped support column (81), the top area of ​​the n-shaped support column (81) is provided with a plurality of linear array wheel body mounting grooves (84), the inside of the n-shaped support column (81) is provided with a second shaft body mounting hole (85) which is in a horizontal state and connected to the first shaft body mounting hole (3), and the inside of the n-shaped support column (81) is provided with a first liquid flow hole (86) which has one end in an open state and has a liquid valve mounted therein ), a plurality of No. 2 liquid flow holes (87) communicating with the bottom space and the No. 1 liquid flow hole (86) are provided inside the N-shaped support column (81), a No. 1 lateral rotating shaft (88) capable of rotation is installed via a bearing inside the No. 2 shaft body mounting hole (85) of the N-shaped support column (81), a No. 1 rotating wheel (89) is fixedly installed on the shaft body located inside the wheel body mounting groove (84) of the No. 1 lateral rotating shaft (88), a rubber wear-resistant sleeve (810) is embedded in the outer circumferential surface of the No. 1 rotating wheel (89), the shaft body of the No. 1 lateral rotating shaft (88) passes through the No. 1 shaft body mounting hole (3), and one end is fixedly connected to the end of the rotor (7) via a coupling (811); The hydraulic telescopic mechanism (9) comprises a longitudinal hollow shell (91), the top of the longitudinal hollow shell (91) being provided with a transverse fixing plate (92) which is integrally structured with the longitudinal hollow shell (91) and fixedly mounted on the bottom of the bottom protruding structure (83), the interior of the longitudinal hollow shell (91) being provided with a longitudinal component movable cavity (93), the top of the longitudinal hollow shell (91) being provided with a No. 3 liquid flow hole (94) which is connected to the bottom of the No. 2 liquid flow hole (87) and the top of the longitudinal component movable cavity (93), the bottom of the longitudinal hollow shell (91) being provided with a longitudinal rod body through hole (95) which is connected to the space below the longitudinal hollow shell (91) and the bottom of the longitudinal component movable cavity (93), ... A piston plate (96) capable of axial movement along the longitudinal component movable cavity (93) is arranged inside, a longitudinal telescopic rod (97) penetrating the longitudinal rod body through-hole (95) is fixedly mounted on the bottom end of the piston plate (96), a coil spring (98) is sleeved on the outer periphery of the rod body of the longitudinal telescopic rod (97) located inside the longitudinal component movable cavity (93), a concave movable block (99) is fixedly mounted on the bottom end of the longitudinal telescopic rod (97), a third shaft body mounting hole (910) is arranged on the vertical surface of the concave movable block (99), a second lateral rotating shaft (911) capable of rotation is mounted in the third shaft body mounting hole (910) via a bearing, and a second rotating wheel (912) is mounted on the shaft of the second lateral rotating shaft (911); The central hole sleeve of the winch wheel with the low-temperature flexible cable wound around it is placed on the periphery of the area between the first rotating wheel (89) and the second rotating wheel (912), so that the inner circumferential surface of the winch wheel is in contact with the upper circumferential surface of the first rotating wheel (89).

2. A tension adjustment device for a low-temperature flexible cable according to claim 1, characterized in that: The cross section of the n-shaped support column (81) is an n-shaped structure, and the structural radius of the number one rotating wheel (89) is greater than the structural radius of the semicircular structure at the top of the n-shaped support column (81).

3. A tension adjustment device for a low-temperature flexible cable according to claim 2, characterized in that: The rubber wear-resistant sleeve (810) is a sleeve ring structure made of rubber material.

4. A tension adjustment device for a low-temperature flexible cable according to claim 3, characterized in that: The initial length of the coil spring (98) is greater than the depth of the longitudinal component active cavity (93).

5. A tension adjustment device for a low-temperature flexible cable according to claim 4, characterized in that: The structural shape of the cross section of the longitudinal rod body through hole (95) is consistent with the structural shape of the cross section of the longitudinal telescopic rod (97), both of which are polygonal structures, and the structural dimensions of the cross section of the longitudinal rod body through hole (95) match the structural dimensions of the cross section of the longitudinal telescopic rod (97).

6. A tension adjustment device for a low-temperature flexible cable according to claim 5, characterized in that: The bottom structure of the second rotating wheel (912) protrudes downward relative to the bottom structure of the concave movable block (99), and the rotation plane of the second rotating wheel (912) and the rotation plane of the first rotating wheel (89) are parallel to each other.

7. An adjustment method for a tension adjustment device for a low-temperature flexible cable according to claim 6, characterized in that: The following steps are included: S1: placing the central hole sleeve of the winch wheel with the low-temperature flexible cable wound around it on the periphery of the area between the first rotating wheel (89) and the second rotating wheel (912), so that the inner circumferential surface of the winch wheel is in contact with the upper circumferential surface of the first rotating wheel (89); S2: using a hydraulic pump to fill the first liquid flow hole (86) with liquid, and the liquid flows into the longitudinal component movable cavity (93), exerting a downward force on the piston plate (96), so that the second rotating wheel (912) is pressed against the bottom area of ​​the inner circumference of the winch wheel under the action of the hydraulic pressure; S3: At this time, the first rotating wheel (89) and the second rotating wheel (912) form an inner support type sleeve relationship with the central hole of the winch wheel, and the sliding friction between the winch wheel and the rubber wear-resistant sleeve (810) is controlled by controlling the pressure of the liquid when the winch wheel rotates. The sliding friction is the strength of the tension adjustment; S4: starting the driving motor (6), and making the rotation direction of the rotor (7) drive the first rotating wheel (89) to rotate, and when the first rotating wheel (89) rotates, it drives the winch wheel to rotate. It should be noted that when the winch wheel rotates in this state, the cable is in a reeled state; S5: A traction force is then applied to one end of the cable, and the traction force causes the cable to be in a pay-out state. In this state, the rotation direction of the winch wheel is opposite to the rotation direction of the first rotating wheel (89). Therefore, the strength required when pulling the cable is the sliding friction between the winch wheel and the rubber wear-resistant sleeve (810) when rotating, thereby achieving tension adjustment of the cable in the pay-out area.

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