A cable constant tension control unit

Abstract

A cable constant tension control unit, comprising a drum assembly, a slide, a main support module, a sub-support module, a spring adjustment module, a drive roller group, and a vertical roller group, wherein the main support module comprises an upper plate, two side plates, and a bottom plate; the sub-support module comprises a frame, an upper extension plate, and a lower extension plate; the spring adjustment module comprises a spring rod, a spring, a top plate, a left vertical plate, a right vertical plate, a square ring, a support plate, a support part, and a counterweight; the drum assembly is fixed on the base frame, and one end of a connecting frame is also fixed on the base frame, the connecting frame is tilted, and the other end of the connecting frame is connected to the slide, the main support module is arranged above the slide, and the main support module can move along the slide.

Description

Technical Field

[0001] The present invention relates to the field of cable retraction and extension control, and in particular to a cable constant tension control unit. Background Art

[0002] With my country's modernization drive, the further exploration of marine resources, the development of urban subways, and the increasing depth of oil and gas exploration, there is a growing demand for long-distance wired communications for deep-sea wells, underground tunnel construction, and specialized robotics. As a result, towed arrays are becoming increasingly longer. To ensure smooth communication between devices, a stable long-distance transmission system is required. Cable reels are the primary equipment used to ensure the normal operation of these long-distance wired communications systems.

[0003] In actual engineering practice, the following problems exist:

[0004] 1. Existing electric cable retraction and release systems do not pay attention to changes in cable tension. The tension of cable retraction and release can easily be too large or too small. Excessive cable tension may cause overall deformation of the cable, surface wrinkles and other problems. Excessive cable tension may cause loose winding and inability to retract and release normally. For example, when the cable is reeled in, the winding radius of the cable on the reel gradually changes from small to large. If the speed of the cable retraction and release reel motor is constant, the winding speed of the cable at the beginning of winding on the reel will gradually increase, while the working load and speed changes of the cable at the other end are unknown, and the cable tension may fluctuate. To control the tension on the cable rope, there are usually two ways of thinking: one is to control the speed difference before and after retracting and releasing the cable, and the other is to control the output torque of the cable reel motor. However, these two solutions require servo feedback technology, which is a precision technology with high cost and short service life.

[0005] Second, the solution mentioned in the first point utilizes spring force to reduce tension fluctuations and provide tension compensation. However, in actual use, there is still room for improvement: the initial force acting on the spring under tension is linear, resulting in a smooth transition and steady action. However, the spring's rebound is large and rapid, which still results in certain tension fluctuations, affecting the cable itself and any collisions between the cable and other components.

[0006] 3. In the prior art, auxiliary control devices for cables, such as rollers, are often separate support structures. A larger number of parts requires multiple support structures, which results in a large increase in manpower and material resources in the procurement, transportation, and assembly processes.

[0007] 4. During the cable reeling and releasing process in the prior art, there is often a certain distance between the cable reel end and the other end of the cable, making it difficult to accurately align the two. Imprecise alignment may cause cable deviation, and the solution may require more expensive and sophisticated instruments. Summary of the Invention

[0008] In order to overcome the above problems, the present invention proposes a solution to solve the above multiple problems at the same time.

[0009] The technical solution adopted by the present invention to solve its technical problem is: a cable constant tension control unit, including a reel assembly, a slide, a main support module, a secondary support module, a spring adjustment module, a drive roller group, and a vertical roller group. The main support module includes an upper plate, two side plates, and a bottom plate; the secondary support module includes a frame, an upper extension plate, and a lower extension plate; the spring adjustment module includes a spring rod, a spring, a top plate, a left vertical plate, a right vertical plate, a square ring, a support plate, a support part, and a counterweight block;

[0010] The reel assembly is fixed to the base frame, and one end of the connecting frame is fixed to the base frame, the connecting frame is inclined, and the other end of the connecting frame is connected to the slide, and the main support module is provided above the slide, and the main support module can move along the slide; two side panels are provided above the base plate, and the upper ends of the two side panels are connected by the upper plate, and the upper plate is provided with a first through hole; an upper extension plate and a lower extension plate are fixed on the frame body, and the upper extension plate and the lower extension plate are both fixed between the two side panels; a second through hole is provided on the upper extension plate, and the spring rod passes through the first through hole and the second through hole, and the spring is sleeved on the spring rod, and a top plate is fixed on the upper end of the spring rod, and the upper end of the spring abuts the top plate and the lower end abuts the upper plate;

[0011] A horizontally arranged driving roller group is provided in the frame, and a vertical roller group is provided between the upper extension plate and the lower extension plate; a long hole is provided in the upper extension plate to adjust the distance between the two rollers of the vertical roller group, and the shaft of one roller in the vertical roller group is accommodated in the long hole;

[0012] The lower surface of the upper extension plate is connected to the left vertical plate and the right vertical plate, the lower end of the spring rod is connected to the square ring, the lower end of the square ring is connected to the support plate, and the lower ends of the left vertical plate and the right vertical plate are provided with support parts; in the non-working state, the two support parts each support a counterweight block, the support plate is located below the two counterweight blocks, and the two counterweight blocks can slide up and down along the left vertical plate and the right vertical plate respectively; when the support plate moves upward, it can abut against the two counterweight blocks at the same time; the width of the square ring is equal to the length of the long hole minus the diameter of the shaft.

[0013] Preferably, the upper extension plate is respectively welded and fixed to the two side plates.

[0014] Preferably, the lower extension plate is also provided with a long hole corresponding to the upper extension plate.

[0015] Preferably, a buffer pad is provided on the upper surface of the support plate.

[0016] Preferably, the reel assembly comprises two reels.

[0017] Preferably, a reel is provided between the two reels.

[0018] Preferably, a connecting shaft is provided inside the reel.

[0019] Preferably, the outer surface of the reel is provided with grooves.

[0020] Preferably, the cable directly enters the vertical roller group after being led out from the reel assembly.

[0021] Preferably, the connecting frame includes two connecting plates.

[0022] The beneficial effects of the present invention are:

[0023] 1. Regarding the first point raised in the background technology, the small tension fluctuations of the cable are mainly adjusted by the spring adjustment guide frame. The load fluctuations of the cable are manifested as the stretching of the cable on a macro scale, and the function of the spring adjustment guide frame is to convert the load fluctuations into the expansion and contraction stress of the spring, thereby reducing the degree of stretching of the cable; the general solution is to set a square ring part at the lower end of the spring rod, and the ring part accommodates the cable to pass through.

[0024] 2. In response to the second point raised in the background technology, a counterweight block is provided on the return path of the square ring, and a support plate is provided at the lower end of the square ring. The support plate abuts against the counterweight block during return to increase the load-bearing weight of the spring when it returns quickly, so that the return of the spring becomes slow under the increased load, avoiding the impact of rapid return; under normal conditions, the counterweight block is supported by the support part below, and can be further abutted by the support plate to be lifted along the slide rail.

[0025] 3. In response to the third point raised in the background technology, a dual-module bracket is designed. The main bracket module is a vertical bracket, which carries a spring rod on the top; the auxiliary bracket module includes a motor fixing frame and two extension plates, the motor fixing frame accommodates the drive roller group, and the vertical roller group is placed between the two extension plates; due to the independence of the auxiliary bracket module, it can be assembled and then welded to the main bracket module, which makes the structure more compact and ensures the convenience of assembly; a through hole is provided on the upper extension plate, and a through hole is provided on the upper plate of the main bracket, and both through holes are for the spring rod to pass through, thereby achieving two-point stability maintenance for the spring rod.

[0026] 4. Regarding the fourth point raised in the background technology, a multi-technical solution is adopted to solve the problem:

[0027] 1) The combination of the vertical roller assembly, square ring, and drive roller assembly ensures stable cable alignment. Specifically, the vertical roller assembly constrains the cable horizontally. Adjustment holes are provided on the extension plate to adjust the spacing of the vertical roller assembly to accommodate different cables. The width of the square ring is equal to the difference between the length of the adjustment hole and the diameter of a single vertical roller. The cable passes through the vertical roller assembly and square ring with minimal angular deviation. The drive roller assembly provides further driving force adjacent to the square ring. Thus, the three components form a single integrated unit to ensure stable cable alignment.

[0028] 2) When the angle between the reel end and the other end of the cable is offset, since the combination of the above three is set on a double-module bracket, a slide is provided under the double-module bracket. The double-module bracket can move along the slide to adapt to the angle between the cable and the reel end. At the same time, since the vertical roller group faces the reel end, the cable contacts the cylindrical roller in the middle of the vertical roller group. The cylindrical transition surface can better protect the cable and avoid sharp scratches on the cable.

[0029] Based on the above two points, an intermediate calibration module is constructed to adapt to the angular deviation between one end of the reel and the other end.

[0030] Note: The above designs are not listed in any particular order, and each one makes the present invention distinctive and significantly advanced compared to the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention will be further described below with reference to the accompanying drawings and examples.

[0032] Figure 1 This is a three-dimensional diagram of the overall retractable system of the present invention.

[0033] Figure 2 This is the front view of the spring adjustment guide frame of the present invention

[0034] Figure 3 This is a side view of the spring adjustment guide frame of the present invention

[0035] Figure 4 A top view of the spring-adjusting guide frame of the present invention

[0036] Figure 5 For the present invention Figure 3 Cross-sectional view at the middle AA position

[0037] Figure 6 For the present invention Figure 3 Cross-sectional view of the middle CC position

[0038] Figure 7 This is a schematic diagram of the spring adjustment principle of the present invention

[0039] Figure 8 This is the specific structural diagram of the spring adjustment module of the present invention

[0040] In the figures, the reference numerals are as follows:

[0041] 1. Bottom plate, 2. First nut, 3. Second nut, 4. Washer, 5. Vertical roller group, 6. Shaft, 7. Spring, 8. Top plate, 9. Motor, 10. Horizontal axis, 11. Second long hole, 12. Upper plate, 13. Side plate, 14. Long hole, 15. Drive roller group, 16. Reel, 17. Braking device, 18. Drive device, 19. Switching rod, 20. Manual turning rod, 21. Slide, 22. Vertical frame, 23. Pulley group, 24. Spring rod, 25. Frame, 26. Upper extension plate, 27. Lower extension plate, 28. Left vertical plate, 29. Right vertical plate, 30. Square ring, 31. Support plate, 32. Support part, 33. Right counterweight, 34. Left counterweight. DETAILED DESCRIPTION

[0042] As shown in the figure: a cable constant tension control unit includes a reel assembly, a slide, a main support module, a secondary support module, a spring adjustment module, a drive roller group, and a vertical roller group. The main support module includes an upper plate, two side plates, and a bottom plate; the secondary support module includes a frame, an upper extension plate, and a lower extension plate; the spring adjustment module includes a spring rod, a spring, a top plate, a left vertical plate, a right vertical plate, a square ring, a support plate, a support part, and a counterweight block;

[0043] The reel assembly is fixed to the base frame, and one end of the connecting frame is fixed to the base frame, the connecting frame is inclined, and the other end of the connecting frame is connected to the slide, and the main support module is provided above the slide, and the main support module can move along the slide; two side panels are provided above the base plate, and the upper ends of the two side panels are connected by the upper plate, and the upper plate is provided with a first through hole; an upper extension plate and a lower extension plate are fixed on the frame body, and the upper extension plate and the lower extension plate are both fixed between the two side panels; a second through hole is provided on the upper extension plate, and the spring rod passes through the first through hole and the second through hole, and the spring is sleeved on the spring rod, and a top plate is fixed on the upper end of the spring rod, and the upper end of the spring abuts the top plate and the lower end abuts the upper plate;

[0044] A horizontally arranged driving roller group is provided in the frame, and a vertical roller group is provided between the upper extension plate and the lower extension plate; a long hole is provided in the upper extension plate to adjust the distance between the two rollers of the vertical roller group, and the shaft of one roller in the vertical roller group is accommodated in the long hole;

[0045] The lower surface of the upper extension plate is connected to the left vertical plate and the right vertical plate, the lower end of the spring rod is connected to the square ring, the lower end of the square ring is connected to the support plate, and the lower ends of the left vertical plate and the right vertical plate are provided with support parts; in the non-working state, the two support parts each support a counterweight block, the support plate is located below the two counterweight blocks, and the two counterweight blocks can slide up and down along the left vertical plate and the right vertical plate respectively; when the support plate moves upward, it can abut against the two counterweight blocks at the same time; the width of the square ring is equal to the length of the long hole minus the diameter of the shaft.

[0046] As shown in the figure, the upper extension plate is welded to the two side plates. The lower extension plate also has elongated holes corresponding to the upper extension plate. A cushion is provided on the upper surface of the support plate. The reel assembly includes two reels. A reel shaft is located between the two reels. A connecting shaft is located within the reel shaft. A groove is provided on the outer surface of the reel shaft. After exiting the reel assembly, the cable directly enters the vertical roller assembly. The connecting frame includes two connecting plates.

[0047] The above detailed description is a specific description of a feasible embodiment of the present invention. The embodiment is not intended to limit the patent scope of the present invention. Any equivalent implementation or modification that does not depart from the present invention should be included in the patent scope of this case.

Claims

1. A cable constant tension control unit, characterized by: It includes a reel assembly, a slide, a main support module, a secondary support module, a spring adjustment module, a drive roller group, and a vertical roller group. The main support module includes an upper plate, two side plates, and a bottom plate; the secondary support module includes a frame, an upper extension plate, and a lower extension plate; the spring adjustment module includes a spring rod, a spring, a top plate, a left vertical plate, a right vertical plate, a square ring, a support plate, a support part, and a counterweight block; The reel assembly is fixed to the base frame, and one end of the connecting frame is fixed to the base frame, the connecting frame is inclined, and the other end of the connecting frame is connected to the slide, and the main support module is provided above the slide, and the main support module can move along the slide; two side panels are provided above the base plate, and the upper ends of the two side panels are connected by the upper plate, and the upper plate is provided with a first through hole; an upper extension plate and a lower extension plate are fixed on the frame body, and the upper extension plate and the lower extension plate are both fixed between the two side panels; a second through hole is provided on the upper extension plate, and the spring rod passes through the first through hole and the second through hole, and the spring is sleeved on the spring rod, and a top plate is fixed on the upper end of the spring rod, and the upper end of the spring abuts the top plate and the lower end abuts the upper plate; A horizontally arranged driving roller group is provided in the frame, and a vertical roller group is provided between the upper extension plate and the lower extension plate; a long hole is provided in the upper extension plate to adjust the distance between the two rollers of the vertical roller group, and the shaft of one roller in the vertical roller group is accommodated in the long hole; The lower surface of the upper extension plate is connected to the left vertical plate and the right vertical plate, the lower end of the spring rod is connected to the square ring, the lower end of the square ring is connected to the supporting plate, and the lower ends of the left vertical plate and the right vertical plate are provided with a support portion; in the non-working state, the two supporting portions each support a counterweight block above, and the supporting plate is located below the two counterweight blocks, and the two counterweight blocks can slide up and down along the left vertical plate and the right vertical plate respectively; when the supporting plate moves upward, it can simultaneously abut against the two counterweight blocks; the width of the square ring is equal to the length of the long hole minus the diameter of the shaft; After being led out from the reel assembly, the cable directly enters the vertical roller group; the connecting frame includes two connecting plates.

2. A cable constant tension control unit according to claim 1, characterized in that: The upper extension plate is respectively welded and fixed to the two side plates.

3. A cable constant tension control unit according to claim 1, characterized in that: The lower extension plate is also provided with a long hole corresponding to the upper extension plate.

4. A cable constant tension control unit according to claim 1, characterized in that: A buffer pad is provided on the upper surface of the supporting plate.

5. The cable constant tension control unit according to claim 1, characterized in that: The reel assembly includes two reels.

6. A cable constant tension control unit according to claim 5, characterized in that: A reel is provided between the two reels.

7. A cable constant tension control unit according to claim 6, characterized in that: A connecting shaft is provided inside the reel.

8. A cable constant tension control unit according to claim 7, characterized in that: The outer surface of the reel is provided with grooves.

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