Cable reel pay-off device

Abstract

The utility model belongs to the field of wire coil uncoiling devices for storing strip materials, strips or filament-shaped materials on a wire shaft, and particularly relates to a cable coil pay-off device which comprises a supporting seat and a rotating disc. The rotary table is provided with a cable reel supporting structure allowing the axis of a cable reel to be vertically placed and a cable reel positioning structure capable of positioning the cable reel in the radial direction, the rotary table is rotatably installed on the supporting base around the vertical axis through a thrust bearing, and one of the rotary table and the supporting base is provided with an annular rail. The circle center of the circle where the circular-ring-shaped track is located is located on the rotating axis of the rotating disc, a plurality of supporting wheels are arranged on the other one around the rotating axis of the rotating disc in the circumferential direction at intervals, the supporting wheels are matched with the circular-ring-shaped track in an up-down supporting mode, rotating installation is mainly achieved through thrust bearings, and the supporting wheels play an auxiliary role. And the cable reel pay-off device is more reliable in structure.

Description

Technical Field

[0001] The utility model belongs to the field of a device for unwinding a cable drum storing strips, strips or filamentary materials on a spool, in particular to a cable drum unwinding device. Background Art

[0002] When performing cable wiring operations in the field, the cable reel needs to be unwound and the wire needs to be paid out. Since the cable reel is heavy, a pay-out device is required to rotate the cable reel to pay out the wire.

[0003] Regarding the structure of the cable reel pay-out device in the prior art, for example, a cable laying and pay-out device disclosed in a Chinese utility model patent with authorization announcement number CN220563953U and authorization announcement date of March 8, 2024, comprises a support base, a support wheel is provided on the top of the support base, and a turntable is mounted on the support wheel to realize the rotational installation of the turntable on the support base. A limiting rod is inserted in the middle of the turntable. When in use, the cable reel is placed on the turntable, and the limiting rod is inserted into the hole in the middle of the cable reel. The turntable limits the cable reel in the horizontal direction through the limiting rod. When in use, the construction worker pulls the cable, and the force of pulling the cable can cause the cable reel and the turntable to rotate relative to the support base, thereby realizing the pay-out very conveniently. At the same time, in order to control the pay-off speed, a brake structure is provided between the support seat and the turntable. In order to prevent the wear of the pulled-out cable, a slide and a movable frame are provided beside the support seat. The movable frame is installed on the slide with upper and lower guides, and rollers are provided inside the movable frame. The paid-out cable passes through the movable frame and cooperates with the rollers inside the movable frame, thus preventing the cable from being worn.

[0004] The turntable of the cable laying and unwinding device in the above-mentioned prior art is only installed on the support seat by supporting the rotating wheel. Due to the differences between different wheels and the heavy weight of the cable drum, individual wheel structures are prone to damage and failure after long-term use, resulting in an unstable turntable posture and causing the cable drum to tip over. Utility Model Content

[0005] The purpose of the utility model is to provide a cable reel pay-out device to solve the technical problem in the prior art that the turntable of the cable reel pay-out device is rotatably mounted on a support seat and has low structural reliability, which easily causes the cable reel to topple during use.

[0006] To achieve the above-mentioned purpose, the technical solution of the cable reel pay-off device provided by the present invention is:

[0007] A cable reel unreeling device, comprising a support base and a turntable. The turntable is provided with a cable reel support structure for vertically placing the axis of the cable reel and a cable reel positioning structure capable of positioning the cable reel in the radial direction. The turntable is rotatably mounted on the support base through a thrust bearing around a vertical axis. An annular track is provided on one of the turntable and the support base, and the center of the circle where the annular track is located is on the rotation axis of the turntable. A plurality of support wheels are circumferentially spaced around the rotation axis of the turntable on the other one, and the support wheels are in upper and lower support cooperation with the annular track.

[0008] As a further improvement, the cable reel unreeling device further comprises a braking system. The braking system includes a brake drum, a brake pump, brake shoe linings and a brake oil cylinder located inside the brake drum. The brake shoe linings are hinged on the support base around an axis parallel to the rotation axis of the turntable. The brake drum is connected to the turntable and cooperates with the brake shoe linings. The brake oil cylinder is fixed on the support base and its movable end is in transmission cooperation with the brake shoe linings. The brake pump is connected to the brake oil cylinder through a hydraulic pipeline, and a brake control structure for human operation is provided on the brake pump. The brake control structure is for a person to apply force to drive the brake pump to pump hydraulic fluid into the brake oil cylinder, so as to drive the movable end of the brake oil cylinder to act and drive the brake shoe linings to press against the brake drum for braking.

[0009] As a further improvement, the support base includes a central seat body and a ring surrounding the outside of the central seat body. The brake oil cylinder is arranged on the central seat body. The ring forms the annular track. A plurality of connecting ribs are circumferentially spaced around the ring between the central seat body and the ring. The brake pump is arranged outside the ring. One of the connecting ribs has a channel for arranging the hydraulic pipeline connecting the brake pump and the brake oil cylinder.

[0010] As a further improvement, the brake drum surrounds the outside of the thrust bearing.

[0011] As a further improvement, the turntable includes a disc body and a positioning shaft. The positioning shaft is located at the center of the disc body and penetrates the disc body up and down. The cable reel support structure is located on the disc body. The part of the positioning shaft extending upward from the disc body serves as the cable reel positioning structure for cooperating with the central hole of the cable reel. The lower end of the positioning shaft extends into the brake drum for installing the thrust bearing.

[0012] As a further improvement, the support base has a central shaft extending into the brake drum. One end of the central shaft facing the positioning shaft has a hole, and the positioning shaft is inserted into the hole of the central shaft and is in rotational cooperation. Or, one end of the positioning shaft facing the central shaft has a hole, and the central shaft is inserted into the hole of the positioning shaft and is in rotational cooperation.

[0013] As a further improvement, the lower end of the support base is provided with a mounting base, the brake pump is arranged on the mounting base, the brake control structure is a pedal, the cable reel wire releasing device further includes a wheel frame, a roller for rotatably cooperating with the cable is mounted on the wheel frame, and the wheel frame is mounted on the mounting base through an up-and-down telescopic structure.

[0014] As a further improvement, the cable reel wire releasing device further includes a wheel frame, a plurality of rollers are mounted on the wheel frame, and the cooperation of the plurality of rollers enables the cable to have a wheel surface for cooperation with the cable when moving up, down, left, and right. The wheel frame is mounted on the support base through an up-and-down telescopic structure, so that the wheel frame can move up and down with the lifting of the cable.

[0015] As a further improvement, two rollers rotatably mounted side by side left and right on the wheel frame and rotating about a vertical axis have larger diameters at both ends and a smaller diameter in the middle, so as to form a perforation for the cable to pass through between the two rollers.

[0016] As a further improvement, the rotation axes of the two rollers are arranged in the same plane as the rotation axis of the turntable.

[0017] The beneficial effects are as follows: The present utility model improves the cable reel wire releasing device in the prior art. Compared with the turntable of the cable reel wire releasing device in the prior art, which is only rotatably mounted on the support base through a support wheel, in the present utility model, the turntable is rotatably mounted on the support base through a thrust bearing, and a support wheel is also arranged between the turntable and the support base. Since the thrust bearing has good axial load-bearing performance, the rotational mounting of the turntable on the support base can be realized more reliably. The thrust bearing bears the main axial load, reduces the load borne by the support wheel, and further reduces the wear of the support wheel. Even if the thrust bearing wears after long-term use, under the support of a plurality of support wheels arranged circumferentially, the turntable can still maintain a stable posture, improving the durability and reliability of the cable wire releasing device. Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of Embodiment 1 of the cable reel wire releasing device in the present utility model;

[0019] Figure 2 It is a cross-sectional view showing the installation structure of the brake system components and the thrust bearing in the brake drum in the present utility model;

[0020] Figure 3 It is a schematic diagram of the brake system in the present utility model;

[0021] Description of the Reference Numerals:

[0022] 1. Support base; 2. Turntable; 3. Disk body; 4. Brake drum; 5. Bolt; 6. Positioning shaft; 7. Central seat body; 8. Ring; 9. Central shaft; 10. Thrust bearing; 11. Brake shoe; 12. Brake cylinder; 13. Brake pump; 14. Pedal; 15. Wheel carrier; 16. Roller; 17. Insert rod; 18. Sleeve; 19. Hydraulic pipeline; 20. Support wheel. Detailed implementation manners

[0023] The features and performance of the present utility model will be further described in detail below in conjunction with embodiments.

[0024] The present utility model is improved based on the structure of the cable reel pay-off device in the prior art, and is mainly used to solve the technical problem that the existing cable reel pay-off device is unreliable.

[0025] The principle of the solution of the cable reel pay-off device in the present utility model is as follows: for the turntable and the support base, a thrust bearing is arranged between the turntable and the support base, and the turntable is rotatably installed on the support base through the thrust bearing. In this way, the thrust bearing bears the main axial load, reduces the load on the support wheel, and avoids excessive wear or structural failure of the support wheel. When the thrust bearing is worn after long-term use, the turntable can still maintain its posture under the support of the support wheel, making the cable reel pay-off device structure reliable.

[0026] Embodiment 1 of the cable reel pay-off device of the present utility model:

[0027] As Figure 1 shown, the cable reel pay-off device includes a support base 1 and a turntable 2. The turntable 2 includes a disk body 3 and a positioning shaft 6. For the structure of the disk body 3, specifically as Figure 1 shown, the disk body 3 includes a central disk and an outer ring surrounding the outer periphery of the central disk. The central disk and the outer ring are connected by a plurality of connecting ribs arranged radially to achieve the functions of connection and structural strengthening. The upper end surface of the disk body 3 serves as a cable reel support structure for placing the cable reel thereon. There is a central hole in the middle of the disk body 3, and the positioning shaft 6 passes through the central hole up and down and is fixed to the disk body 3. The fixing method is welding. The part of the positioning shaft 6 extending upward from the central hole serves as a cable reel positioning structure and is inserted into the hole in the middle of the cable reel to achieve the positioning of the cable reel in the radial direction. In other implementation manners, the positioning shaft may not be provided, but blocks may be fixed on each connecting rib to form a cable reel positioning structure. All the fixed blocks are distributed on a circle, and the center of the circle is located on the rotation axis of the turntable. When the cable reel is placed on the turntable, the fixed blocks cooperate with the outer peripheral surface of the lower end of the cable reel in a radial blocking manner. In this embodiment, the outer ring and the connecting ribs of the disk body are made of circular channel steel. In other implementation manners, any suitable profile can be selected.

[0028] The support base 1 includes a central seat body 7 and a ring 8 surrounding the periphery of the central seat body 7. The central seat body 7 and the ring 8 are connected by radially arranged connecting ribs. As Figure 2 shown, a central shaft 9 is provided on the central seat body 7. The central shaft 9 is inserted with a central hole. A thrust bearing 10 is connected to the positioning shaft 6 and extends downward from the thrust bearing. The part of the positioning shaft 6 extending downward from the thrust bearing 10 is inserted and rotatably fitted with the central hole of the central shaft 9. The upper end of the central shaft 9 has a stepped structure to realize the positioning and installation of the thrust bearing 10 on the central shaft 9, thereby realizing the rotational installation of the turntable 2 on the support base 1. For the cooperation between the central shaft and the positioning shaft, in other embodiments, a hole can be opened at the lower end of the positioning shaft to insert the central shaft into the positioning shaft.

[0029] The center of the outer circle of the turntable 2 is on the rotation axis of the turntable 2. A plurality of support wheels 20 are also arranged at intervals along the circumferential direction of the outer circle of the turntable 2. In this embodiment, 6 support wheels 20 are evenly distributed. In other embodiments, the number of support wheels can be more than six or less than 6, but not less than two. The installation structures of the support wheels 20 are the same. Fixed mounting plates are correspondingly installed on the inner and outer sides of the outer circle. The space between the two mounting plates forms a space for accommodating the support wheels 20. The support wheels 20 are rotatably installed on the mounting plates through rotating shafts. The center of the ring 8 of the support base 1 is also on the rotation axis of the turntable 2. The ring 8 serves as an annular track and is in upper and lower support cooperation with the support wheels 20. In other embodiments, an annular track can also be provided on the turntable and support wheels can be provided on the support base. In the present utility model, since a thrust bearing is provided to realize the rotational installation of the turntable on the support base, therefore, the cooperation between the support wheels and the annular track plays an auxiliary role. The load generated by placing the cable reel is mainly borne by the thrust bearing, and the support wheels do not bear excessive loads, reducing the wear of the support wheels. When the thrust bearing wears after long-term use, the turntable can still maintain a stable posture under the support of the support wheels.

[0030] In the present utility model, no rotation driving device is provided between the support base 1 and the turntable 2 of the cable reel unreeling device. After the cable reel is placed on the turntable 2, it can be unreeled by the worker pulling. In order to control the rotation speed of the turntable 2, a braking system is provided between the turntable 2 and the support base 1, as Figure 2 and Figure 3As shown in the figure, the braking system is a hydraulic braking system, which includes a brake drum 4 detachably connected below the turntable 2 by bolts 5. The braking system also includes brake shoes 11 and a brake cylinder 12 arranged inside the brake drum 4. The brake shoes 11 are rotatably mounted on a support seat 1 around a vertical axis. The brake cylinder 12 is fixed on the support seat 1, and its movable end is in transmission cooperation with the brake shoes 11. The braking system also includes a brake pump 13, and the brake pump 13 and the brake cylinder 12 are connected by a hydraulic pipeline. A brake control structure for human operation is also provided on the brake pump 13. In this embodiment, the brake control structure is a pedal 14. Stepping on the pedal can drive the brake pump 13 to press hydraulic oil into the brake cylinder 12, driving the movable end, i.e., the piston rod, of the brake cylinder 12 to act, so as to press the brake shoes 11 against the brake drum 4, and the rotation speed of the turntable 2 is controlled by the friction between the brake drum 4 and the brake shoes 11. In this embodiment, two brake shoes are provided to ensure that the brake drum is evenly stressed radially. Correspondingly, the brake cylinder is a double-piston cylinder. The structure of the braking system is similar to the braking system of a wheel in the prior art, and only the above brief description is given here without further detailed introduction.

[0031] In this embodiment, the lower end of the support seat has an outwardly convex mounting seat, and the brake pump 13 is arranged on the mounting seat. One of the connecting ribs between the central seat body 7 and the ring 8 has a channel for arranging the hydraulic pipeline 19 connecting the brake pump 13 and the brake cylinder 12 to protect the hydraulic pipeline without specially setting a protection structure, and the structure of the equipment is kept as simple as possible. In other embodiments, the brake control structure can also be a handle for the operator to hold by hand. At this time, the brake pump can be arranged at a position easily accessible to the operator's hand.

[0032] As Figure 1As shown, in order to ensure the orderly release of the cable, the cable reel unwinding device also includes a wheel frame 15. In this embodiment, the wheel frame 15 is a rectangular frame. Two rollers 16 that rotate around a vertical axis are installed side by side in the wheel frame 15. The rollers 16 have large diameters at both ends and small diameters in the middle. In this way, a through hole is formed between the two rollers 16 for the cable to pass through, and no matter whether the cable moves upward, downward, left or right, it will cooperate with the wheel surface. The rotation axis of the two rollers 16 is coplanar with the rotation axis of the turntable 2, which can reduce the bending of the cable when it is unwinding. The wheel frame 15 is specifically installed on the support seat 1 through an upward and downward telescopic structure. In this embodiment, the upward and downward telescopic structure includes two telescopic rods. The telescopic rod includes an insert rod 17 and a sleeve 18. The upper end of the insert rod 17 is connected to the wheel frame 15, and the lower end can be freely inserted into the sleeve 18 up and down, so that the wheel frame 15 can move up and down with the cable. The wheel frame 15 is mounted on the support base 1 via a telescopic structure. When not in use, the insertion rod 17 retracts into the sleeve 18, lowering the cable reel payout device and facilitating its storage and loading for transport. In other embodiments, cylindrical rollers of equal diameter can be installed on all four sides of the rectangular wheel frame. Alternatively, the wheel frame can be a U-shaped frame with rollers with larger diameters at the ends and smaller diameters in the middle mounted on each arm. In other embodiments, the telescopic structure can also be a multi-section guide rail connected by a dovetail structure.

[0033] In this embodiment, the wheel carrier and brake pump are both mounted on the mounting base. This allows the operator to observe the cable-to-roller coordination while operating the brake system to control the turntable's rotational speed. This allows for timely troubleshooting should an unexpected situation occur, such as a stuck roller. Of course, in other embodiments, the brake pump and wheel carrier can be staggered around the support base. If the cable reel payout device's structure is simplified, the brake system and wheel carrier may be omitted.

Claims

1. A cable reel pay-off device, comprising a support base and a turntable. The turntable is provided with a cable reel support structure for vertically placing the axis of the cable reel and a cable reel positioning structure capable of positioning the cable reel in the radial direction. It is characterized in that, The turntable is rotatably mounted on the support base through a thrust bearing. An annular track is provided on one of the turntable and the support base, and the center of the circle where the annular track is located is on the rotation axis of the turntable. A plurality of support wheels are circumferentially spaced around the rotation axis of the turntable on the other one, and the support wheels are in upper and lower supporting cooperation with the annular track.

2. The cable reel pay-off device according to claim 1, characterized in that, The cable reel pay-off device further includes a braking system. The braking system includes a brake drum, a brake pump, brake shoes and a brake cylinder located inside the brake drum. The brake shoes are hinged on the support base around an axis parallel to the rotation axis of the turntable. The brake drum is connected to the turntable and cooperates with the brake shoes. The brake cylinder is fixed on the support base and its movable end is in transmission cooperation with the brake shoes. The brake pump is connected to the brake cylinder through a hydraulic pipeline, and a brake control structure for human operation is provided on the brake pump. The brake control structure allows a person to apply force to drive the brake pump to pump hydraulic fluid into the brake cylinder, so as to drive the movable end of the brake cylinder to act and drive the brake shoes to press against the brake drum for braking.

3. The cable reel wire pay-off device according to claim 2, characterized in that The support base includes a central seat body and a ring surrounding the outside of the central seat body. The brake cylinder is arranged on the central seat body. The ring constitutes the annular track. A plurality of connecting ribs are circumferentially spaced and connected between the central seat body and the ring. The brake pump is arranged outside the ring, and one of the connecting ribs has a channel for arranging the hydraulic pipeline connecting the brake pump and the brake cylinder.

4. The cable reel pay-off device according to claim 2 or 3, characterized in that, The brake drum surrounds the outside of the thrust bearing.

5. The cable reel wire pay-off device according to claim 4, characterized in that, The turntable includes a disc body and a positioning shaft. The positioning shaft is located at the center of the disc body and penetrates the disc body up and down. The cable reel support structure is located on the disc body. The part of the positioning shaft extending upward from the disc body serves as a cable reel positioning structure for cooperating with the central hole of the cable reel. The lower end of the positioning shaft extends into the brake drum for installing the thrust bearing.

6. The cable reel pay-off device according to claim 5, characterized in that, The support base has a central shaft extending into the brake drum. One end of the central shaft facing the positioning shaft has a hole, and the positioning shaft is inserted into the hole of the central shaft and is in rotational cooperation. Or, one end of the positioning shaft facing the central shaft has a hole, and the central shaft is inserted into the hole of the positioning shaft and is in rotational cooperation.

7. The cable reel wire pay-off device according to any one of claims 2-3, characterized in that, The lower end of the support base has a mounting seat. The brake pump is arranged on the mounting seat. The brake control structure is a pedal. The cable reel pay-off device further includes a wheel frame. A roller for rotatably cooperating with the cable is installed on the wheel frame. The wheel frame is installed on the mounting seat through an up-and-down telescopic structure.

8. The cable reel unwinding device according to any one of claims 1 to 3, characterized in that, The cable reel pay-off device further includes a wheel frame. A plurality of rollers are installed on the wheel frame. The cooperation of the plurality of rollers enables the cable to have a wheel surface in contact with the cable when the cable moves up, down, left and right. The wheel frame is installed on the support base through an up-and-down telescopic structure, so that the wheel frame can move up and down as the cable rises and falls.

9. The cable reel pay-off device according to claim 8, characterized in that, Two rollers that rotate around a vertical axis are rotatably installed side by side left and right on the wheel frame. The diameters of both ends of the rollers are large and the diameter in the middle is small, so as to form a perforation for the cable to pass through between the two rollers.

10. The cable reel wire pay-off device according to claim 8, characterized in that The rotation axes of the two rollers are arranged in the same plane as the rotation axis of the turntable.

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