Miniature rolling and pulling device

Abstract

The utility model relates to the technical field of rolling and pulling, and provides a miniature rolling and pulling device which comprises a winch shaft, a steel wire rope, a clamping head and a mounting seat, the winch shaft is rotationally arranged on the mounting seat, the clamping head is provided with a through hole, one end of the steel wire rope penetrates through the through hole, the steel wire rope and the clamping head are in press fit connection through external pressure, and a mounting counter bore is formed in the side wall of the winch shaft. A rope hole penetrating through the winch shaft in the radial direction is formed in the bottom of the mounting counter bore, and the steel wire rope extends out of the rope hole. The clamping head and the steel wire rope are in press fit connection through external pressure, that is, the clamping head is extruded through the external pressure to generate irreversible deformation, so that the clamping head and the steel wire rope are tightly wrapped and extruded together, and tight connection is achieved; and the clamping head is embedded in the mounting counter bore in the winch shaft, so that the clamping head does not occupy any external space, the rolling and pulling device can be miniaturized conveniently, and the rolling and pulling device can be suitable for a narrow space conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of rolling and pulling, in particular to a micro rolling and pulling device. Background Art

[0002] The winding and pulling device usually uses the rotation of the winch shaft to drive the wire rope to be retracted and released to achieve actions such as lifting and pulling objects. For example, winches and capstans are all winding and pulling devices. In the winding and pulling device, one end of the wire rope is usually fixed to the winch shaft by a wire rope clamp (also commonly called a wire rope clamp, reel, wire clip, etc., which is fixed by tightening the nut on the U-bolt to clamp the wire rope with a pressure block).

[0003] Some aircraft have flaps on their surfaces that use spring force as the power to close the doors. These flaps use a reel-and-pull device to perform the opening and closing action. However, the installation space for the reel-and-pull device is very narrow. It is necessary to make the reel-and-pull device as small as possible while meeting the load requirements. However, the existing wire rope clamps require a very large installation space and are not applicable in the above-mentioned occasions. Utility Model Content

[0004] The purpose of the present invention is to provide a micro-rolling and pulling device to solve the above-mentioned defects of the prior art.

[0005] The utility model is achieved through the following technical solutions:

[0006] A miniature winding and pulling device includes a capstan shaft, a wire rope, a chuck and a mounting seat. The capstan shaft is rotatably set on the mounting seat. The chuck is provided with a through hole. One end of the wire rope is passed through the through hole, and the wire rope and the chuck are connected by external pressure pressing. The side wall of the capstan shaft is provided with a mounting countersunk hole. The chuck is embedded in the mounting countersunk hole. The bottom of the mounting countersunk hole is provided with a rope hole that passes through the radial direction of the capstan shaft, and the wire rope extends out of the rope hole.

[0007] Optionally, the mounting seat includes a base and a protective seat, the protective seat is connected to the base by fasteners, a cavity is provided on the side of the protective seat close to the base, the winch shaft is rotatably arranged in the cavity, and the side wall of the protective seat is provided with an opening connected to the cavity for the wire rope to pass through.

[0008] Optionally, a first stop plate and a second stop plate are axially spaced apart and arranged on the winch shaft, the first stop plate abuts against the base, and the second stop plate abuts against a side of the cavity away from the base.

[0009] Optionally, a wear pad is provided between the base and the protective seat, and the first baffle is against the wear pad.

[0010] Optionally, the cavity is cylindrical, the first baffle cooperates with the side wall of the cavity, a connecting shaft is provided on a side of the second baffle away from the first baffle, and a hole cooperating with the connecting shaft is provided on the protective seat.

[0011] Optionally, a rotating shaft is provided on the side of the first baffle away from the second baffle, a wrench hole is provided at the end of the rotating shaft, and a avoidance hole for avoiding the rotating shaft is provided on the base, and the diameter of the avoidance hole is larger than the diameter of the rotating shaft.

[0012] Optionally, the winding and pulling device also includes an anti-rotation pin; the first baffle is provided with a plurality of indexing holes evenly spaced along the circumferential direction, and the base is provided with a pin hole to insert the anti-rotation pin into the indexing hole to fix the winch shaft.

[0013] Optionally, an anti-retreat step is provided at one end of the anti-rotation pin, which is used to abut against the first stop plate after the anti-rotation pin is inserted into the indexing hole, thereby preventing the anti-rotation pin from falling off.

[0014] Optionally, a mounting groove is provided on a side of the base away from the protective seat, a blocking plate for blocking the pin hole and the avoidance hole is provided in the mounting groove, and the blocking plate is connected to the mounting seat by connecting screws.

[0015] Optionally, the sealing plate is connected to the protective seat via the connecting screws, and a step hole is provided on the base, the large diameter section of the step hole is located on the side close to the protective seat, and the small diameter section of the step hole is located on the side away from the protective seat, and the small diameter section of the step hole is provided with an internal thread that can be connected to the threaded section of the connecting screw.

[0016] The technical solution of the present invention has at least the following advantages and beneficial effects: in the present invention, the clamp is connected to the wire rope by external pressure compression, that is, the clamp is squeezed by external pressure to cause irreversible deformation, so that it is tightly wrapped and squeezed together with the wire rope to achieve a tight connection; the clamp is then embedded in the mounting countersunk hole on the capstan shaft, so that the clamp does not occupy any external space, which facilitates the miniaturization of the winding and pulling device, and further facilitates the winding and pulling device to be suitable for a small space. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a schematic structural diagram of a micro-rolling and pulling device provided by the utility model;

[0019] Figure 2 A top view of a micro-rolling and pulling device provided by the utility model;

[0020] Figure 3 for Figure 2 AA section view in;

[0021] Figure 4 is a cross-sectional view of the base;

[0022] Figure 5 This is a schematic diagram of the connection structure of the clamp, wire rope and capstan shaft;

[0023] Figure 6 This is a cross-sectional view of the connection structure of the clamp, wire rope and capstan shaft;

[0024] Figure 7 A diagram showing the use of a micro-rolling and pulling device provided by the present invention;

[0025] Figure 8 A cross-sectional view of a micro-rolling and pulling device provided by the utility model in use;

[0026] Figure 9 It is a schematic diagram of the structure of the anti-rotation pin;

[0027] Figure 10 for Figure 9 Enlarged view of point B in FIG.

[0028] Icon: 1-winch shaft, 101-first gear plate, 1011-indexing hole, 102-second gear plate, 103-connecting shaft, 104-rotating shaft, 1041-wrench hole, 2-wire rope, 3-clamp, 4-protective seat, 401-cavity, 5-base, 501-avoidance hole, 502-pin hole, 503-step hole, 5031-large diameter section, 5032-small diameter section, 6-wear pad, 7-anti-rotation pin, 701-anti-retreat step, 8-anti-collision sleeve, 9-sealing plate, 10-connecting screw, 11-wrench. DETAILED DESCRIPTION

[0029] refer to Figure 1 A miniature winding and pulling device includes a winch shaft 1, a wire rope 2, a clamp 3 and a mounting seat.

[0030] The capstan shaft 1 is rotatably mounted on the mounting base, and the chuck 3 is provided with a through hole. One end of the wire rope 2 is passed through the through hole. The wire rope 2 and the chuck 3 are connected by external pressure. That is, the chuck 3 is squeezed by the external pressure, causing it to undergo irreversible deformation, thereby tightly wrapping and squeezing it together with the wire rope 2 to achieve a tight connection. As an option, the chuck 3 of this embodiment is designed to be cylindrical, and the through hole for passing the wire rope 2 is arranged along the axis of the chuck 3. In actual application, the external pressure can be other pressure equipment such as a press. It is easy to understand that the pressure is applied radially during extrusion. After extrusion, the cross-section of the chuck 3 perpendicular to the axis has a flat structure similar to an ellipse.

[0031] refer to Figure 5 and Figure 6 The side wall of the capstan shaft 1 is provided with a mounting countersunk hole, and the chuck 3 is embedded in the mounting countersunk hole. It is easy to understand that the chuck 3 is installed with an interference fit with the mounting countersunk hole. The bottom of the mounting countersunk hole is provided with a rope hole that runs through the radial direction of the capstan shaft 1. The wire rope 2 extends from the rope hole. The rope hole outlet can be rounded to prevent the wire rope 2 from being scratched during the winding process. After the chuck 3 is installed, the wire rope 2 and the chuck 3 that protrude from the capstan shaft 1 are filed to ensure that the capstan shaft 1 is smooth, so that the wire rope 2 can be wound smoothly.

[0032] refer to Figure 1-Figure 3 The mounting base includes a base 5 and a protective base 4. The protective base 4 is connected to the base 5 by fasteners. As an option, the fasteners are screws, which are screwed into the base 5 from the protective base 4. In actual applications, wire screw sleeves (also known as threaded sleeves) can be set in the corresponding screw holes on the base 5, and the screw pressing surface is tightened with a gasket to prevent loosening.

[0033] A cavity 401 is provided on one side of the protective seat 4 close to the base 5, and the winch shaft 1 is rotatably arranged in the cavity 401. The cavity 401 accommodates both the winch shaft 1 and the wire rope 2 wound on the winch shaft 1. The side wall of the protective seat 4 is provided with an opening connected to the cavity 401 for the wire rope 2 to pass through, thereby ensuring the smooth retraction and release of the wire rope 2.

[0034] refer to Figure 3 and Figure 5 In this embodiment, a first stopper 101 and a second stopper 102 are spaced apart along the axial direction on the capstan shaft 1. The first stopper 101 abuts against the base 5, while the second stopper 102 abuts against the side of the cavity 401 away from the base 5. This arrangement not only allows the first and second stoppers 101 and 102 to achieve axial positioning of the capstan shaft 1, but also allows the steel wire rope 2 wound around the capstan shaft 1 to be constrained between the first and second stoppers 101 and 102.

[0035] On the basis of the above, refer to Figure 1 and Figure 3 A wear pad 6 is provided between the base 5 and the protective seat 4, so that the first baffle 101 is in contact with the wear pad 6. Since the winch shaft 1 is in sliding friction during the entire reeling process, the first baffle 101 is in contact with the wear pad 6 and does not directly contact the base 5. In this way, after the wear pad 6 is worn, only the wear pad 6 needs to be replaced without damaging the base 5, which greatly improves the service life and economy.

[0036] Further, refer to Figure 3 and Figure 5In this embodiment, cavity 401 is cylindrical, and first baffle 101 mates with the sidewall of cavity 401, meaning the nominal diameter of first baffle 101 is the same as the nominal diameter of the inner wall of cavity 401. A connecting shaft 103 is provided on the side of second baffle 102 away from first baffle 101, and a hole is provided in protective seat 4 to mate with connecting shaft 103. This ensures high-precision rotation of capstan shaft 1 while preventing contact between capstan shaft 1 and base 5, thus preventing wear on base 5.

[0037] It is easy to understand that the above-mentioned installation method of the winch shaft 1 is only an option, not a limitation. In some embodiments of the present invention, the winch shaft 1 can of course be arranged in other ways. For example, in some embodiments, one end of the winch shaft 1 is passed through the protective seat 4, and the other end is passed through the base 5. For example, in some embodiments, the first baffle 101 and the second baffle 102 are also provided, and both the first baffle 101 and the second baffle 102 are matched with the inner wall of the cavity 401.

[0038] refer to Figure 5 In this embodiment, a rotating shaft 104 is provided on the side of the first baffle 101 away from the second baffle 102 (it is easy to understand that in this embodiment, the rotating shaft 104, the first baffle 101, the second baffle 102, the capstan shaft 1, and the connecting shaft 103 should be coaxial). A wrench hole 1041 is provided at the end of the rotating shaft 104. The cross-section of the wrench hole 1041 perpendicular to the axis is a regular hexagon. Its function is to be inserted into the wrench 11. By rotating the wrench 11, torque is transmitted to drive the capstan shaft 1 to rotate, thereby realizing the retraction and extension of the wire rope 2. On the basis of the provision of the rotating shaft 104, an avoidance hole 501 is provided on the base 5 to avoid the rotating shaft 104. The diameter of the avoidance hole 501 is larger than the diameter of the rotating shaft 104 to avoid wear.

[0039] refer to Figure 7 and Figure 8 On the basis of the above, the winding and pulling device of this embodiment also includes an anti-rotation pin 7, a first baffle 101 is evenly spaced along the circumferential direction with a plurality of indexing holes 1011, and a pin hole 502 is provided on the base 5. In actual application, after the capstan shaft 1 is rotated into place, the capstan shaft 1 can be fixed by inserting the anti-rotation pin 7 into the indexing hole 1011. By removing the anti-rotation pin 7, the capstan shaft 1 can be rotated by the wrench 11.

[0040] It is worth noting that, based on the above, one hand is required to hold the anti-rotation pin 7 and the other hand to operate the wrench 11, which is inconvenient. Figure 9 and Figure 10In this embodiment, one end of the anti-rotation pin 7 is provided with an anti-return step 701. When in use, the end provided with the anti-return step 701 is inserted into the indexing hole 1011, and the anti-return step 701 is higher than the first stopper 101. Since the diameter of the anti-rotation pin 7 below the anti-return step 701 is smaller than the indexing hole 1011, after the anti-rotation pin 7 is released, the capstan shaft 1 can rotate slightly (that is, the anti-rotation pin 7 and the corresponding indexing hole 1011 are not coaxial). In this way, the anti-return step 701 can be abutted against the first stopper 101 (that is, it is inverted on the first stopper 101), limiting the anti-rotation pin 7 from falling off. In other words, after the anti-rotation pin 7 is inserted into the indexing hole 1011, it does not need to be held by hand, making the operation more convenient. In addition, it should be understood that when the wire rope 2 needs to be retracted or released again, the capstan shaft 1 is first rotated by the wrench 11 to align the indexing hole 1011 with the anti-rotation pin 7, and the anti-rotation pin 7 is removed.

[0041] In practical applications, refer to Figure 3 An anti-collision sleeve 8 can also be set in the pin hole 502 to prevent the anti-rotation pin 7 from directly contacting the base 5. There is no restriction on the installation method of the anti-collision sleeve 8. As an option, a step is provided in the pin hole 502 of this embodiment, and the anti-collision sleeve 8 is designed as a "T"-shaped cylindrical structure, placed on the step, and pressed by the wear pad 6.

[0042] It is worth noting that if the reeling device is used on an aircraft, the avoidance hole 501 and the pin hole 502 at the bottom of the base 5 are likely to affect the flow field and also affect the appearance. Therefore, the present embodiment has made the following improvements, referring to Figure 3 and Figure 4 The base 5 has a mounting groove on one side away from the protective base 4. A blocking plate 9 is provided in the mounting groove to block the pin hole 502 and the avoidance hole 501. The blocking plate 9 is connected to the mounting base via a connecting screw 10. In actual application, only one connecting screw 10 is required. When the capstan shaft 1 needs to be rotated, the connecting screw 10 is loosened and the blocking plate 9 is rotated a certain angle (for example, 90° or 180°) to expose the pin hole 502 and the wrench hole 1041.

[0043] Furthermore, in this embodiment, the blocking plate 9 is connected to the protective seat 4 via a connecting screw 10. That is, the protective seat 4 is provided with a corresponding screw hole, and the connecting screw 10 is screwed into the protective seat 4 from the bottom of the base 5. In actual application, a wire screw sleeve can be provided in the screw hole of the protective seat 4 to prevent loosening. A stepped hole 503 is provided on the base 5, and the large diameter section 5031 of the stepped hole 503 is located on the side close to the protective seat 4, and the small diameter section 5032 of the stepped hole 503 is located on the side away from the protective seat 4. The small diameter section 5032 of the stepped hole 503 is provided with an internal thread that can be connected to the threaded section of the connecting screw 10. With this arrangement, after the connecting screw 10 is loosened, the small diameter section 5032 of the stepped hole 503 is provided with an internal thread, which can prevent the connecting screw 10 from falling off the base 5, making operation more convenient.

[0044] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A micro-winding device, comprising a capstan shaft, a steel wire rope, a clamp and a mounting seat, wherein the capstan shaft is rotatably mounted on the mounting seat, characterized in that: The clamp is provided with a through hole, one end of the wire rope is passed through the through hole, and the wire rope and the clamp are connected by external pressure pressing. The side wall of the capstan shaft is provided with a mounting countersunk hole, and the clamp is embedded in the mounting countersunk hole. The bottom of the mounting countersunk hole is provided with a rope hole that passes through the radial direction of the capstan shaft, and the wire rope extends out of the rope hole.

2. The micro-rolling device according to claim 1, characterized in that: The mounting seat includes a base and a protective seat, the protective seat is connected to the base by fasteners, a cavity is provided on the side of the protective seat close to the base, the winch shaft is rotatably arranged in the cavity, and the side wall of the protective seat is provided with an opening connected to the cavity for the wire rope to pass through.

3. The micro-rolling device according to claim 2, characterized in that: The winch shaft is provided with a first stopper and a second stopper at intervals along the axial direction. The first stopper abuts against the base, and the second stopper abuts against a side of the cavity away from the base.

4. The micro-rolling device according to claim 3, characterized in that: A wear pad is provided between the base and the protection seat, and the first baffle is against the wear pad.

5. The micro-rolling device according to claim 3 or 4, characterized in that: The cavity is cylindrical, the first baffle cooperates with the side wall of the cavity, a connecting shaft is provided on a side of the second baffle away from the first baffle, and a hole cooperating with the connecting shaft is provided on the protective seat.

6. The micro-rolling device according to claim 5, characterized in that: A rotating shaft is provided on one side of the first baffle away from the second baffle, a wrench hole is provided at the end of the rotating shaft, and a avoidance hole for avoiding the rotating shaft is provided on the base, and the diameter of the avoidance hole is larger than the diameter of the rotating shaft.

7. The micro-rolling device according to claim 6, characterized in that: The winding and pulling device also includes an anti-rotation pin; the first baffle is evenly spaced with a plurality of indexing holes along the circumferential direction, and the base is provided with a pin hole to insert the anti-rotation pin into the indexing hole to fix the winch shaft.

8. The micro-rolling device according to claim 7, characterized in that: An anti-retreat step is provided at one end of the anti-rotation pin, which is used for abutting the first stop plate after the anti-rotation pin is inserted into the indexing hole, thereby preventing the anti-rotation pin from falling off.

9. The micro-rolling device according to claim 7, characterized in that: A mounting groove is provided on one side of the base away from the protection seat. A blocking plate for blocking the pin hole and the avoidance hole is provided in the mounting groove. The blocking plate is connected to the mounting seat by connecting screws.

10. The micro-rolling device according to claim 9, characterized in that: The blocking plate is connected to the protective seat by the connecting screw. A stepped hole is provided on the base. The large diameter section of the stepped hole is located on the side close to the protective seat, and the small diameter section of the stepped hole is located on the side away from the protective seat. The small diameter section of the stepped hole is provided with an internal thread that can be connected to the threaded section of the connecting screw.

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