Rope tensioner and flag raising device

Abstract

The utility model belongs to the technical field of flag lifting equipment, and discloses a rope tensioner and a flag lifting device. The rope tensioner is connected with the two ends of a rope, used for adjusting the tension degree of the rope and comprises a main pipe and two lead screws, a first thread and a second thread which are opposite in extending direction are arranged on the inner wall, close to the two ends, of the main pipe, and the two lead screws are connected with the main pipe through the first thread and the second thread respectively. The ends, away from the main pipe, of the two lead screws can be fixedly connected with the two ends of the rope correspondingly, and when the main pipe rotates along the axis of the main pipe, the two lead screws can be close to or away from each other in the axis direction of the main pipe, so that the rope is tensioned or loosened, and the tension degree of the rope is adjusted.

Description

Technical Field

[0001] This utility model relates to the field of flag raising equipment technology, and in particular to a rope tensioner and flag raising device. Background Technology

[0002] Flag-raising devices typically rely on ropes to raise or lower the flag. Overly tight ropes can break after prolonged use, affecting the flag-raising and lowering process. Overly loose ropes can cause tangling problems, affecting the continuity and solemnity of the flag-raising. Therefore, proper rope tension is crucial for flag-raising devices. Appropriate tension also helps reduce friction between the rope and other components, reducing wear and ensuring a smooth and efficient flag-raising process.

[0003] Therefore, a rope tensioner needs to be designed to adjust the tension of the rope and ensure that the rope has sufficient tension during transmission to meet the requirements of rope friction transmission. Utility Model Content

[0004] The purpose of this invention is to provide a rope tensioner and a flag-raising device that can adjust the tension of the rope.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A rope tensioner, comprising:

[0007] The system includes a main tube and two movable components, each of which can be connected to both ends of a rope and can move along the axis of the main tube.

[0008] Each moving component includes a lead screw, and the inner walls at both ends of the main tube are provided with a first thread and a second thread with opposite directions of rotation. The two lead screws are connected to the main tube through the first thread and the second thread, respectively. When the main tube rotates along its own axis, the two lead screws can move closer or further away from each other along the axis of the main tube to adjust the tension of the rope.

[0009] The moving assembly further includes a locking sleeve and a locking member. One end of the locking sleeve is connected to the lead screw, and a guide cavity is provided in the locking sleeve extending axially to accommodate the rope. The locking member can be placed in the guide cavity to press the rope against the inner wall of the guide cavity.

[0010] Preferably, the locking sleeve has a through hole on its side wall, and the locking member can pass through the through hole and press the rope against the inner wall of the guide cavity corresponding to the through hole.

[0011] Preferably, multiple through holes are provided, and the multiple through holes are spaced apart along the axial direction of the locking sleeve.

[0012] Preferably, the locking sleeve is provided with through holes in all directions, and only one through hole is provided in the same radial direction of the locking sleeve.

[0013] Preferably, the moving component further includes a limiting sleeve, which is fitted onto the ends of the two lead screws that are far apart from each other.

[0014] Preferably, the outer wall of the main tube is provided with an adjustment hole for accommodating an adjustment member so that the main tube can be driven to rotate along its own axis.

[0015] Preferably, the adjustment hole extends radially through the main pipe.

[0016] Preferably, the first thread and the second thread are spaced apart along the axial direction of the main pipe and are symmetrically arranged with respect to the adjustment hole.

[0017] A flag-raising device includes the aforementioned rope tensioner.

[0018] The beneficial effects of this utility model are:

[0019] This invention discloses a rope tensioner, connected to both ends of a rope, for adjusting the rope tension. It includes a main tube and two movable components, each capable of being connected to both ends of the rope and moving along the axis of the main tube. Each movable component includes a lead screw. The inner walls of both ends of the main tube are provided with a first thread and a second thread with opposite directions of rotation. The two lead screws are connected to the main tube via the first and second threads, respectively. When the main tube rotates along its own axis, the two lead screws can move closer to or further away from each other along the axis of the main tube, thereby tightening or loosening the rope to adjust its tension.

[0020] On the other hand, this utility model proposes a flag-raising device that makes the flag-raising process more stable and safer by using the above-mentioned rope tensioner. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the rope tensioner proposed in this utility model.

[0022] In the picture:

[0023] 1. Main pipe; 11. Adjustment hole; 2. Lead screw; 3. Limit sleeve; 4. Locking sleeve; 41. Guide cavity; 42. Rope inlet; 43. Through hole. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not the entire structure.

[0025] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0027] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0028] This utility model proposes a rope tensioner and a flag-raising device. The flag-raising device includes a rope tensioner to adjust the tension of the rope, making the flag-raising process smoother and safer. Specifically, the rope tensioner is connected to both ends of the rope to adjust the rope tension.

[0029] Reference Figure 1The rope tensioner includes a main pipe 1 and two moving components. The two moving components can be connected to both ends of the rope, and can move along the axis of the main pipe 1. Each moving component includes a lead screw 2. The inner walls of both ends of the main pipe 1 are provided with a first thread and a second thread with opposite directions of rotation. The two lead screws 2 are connected to the main pipe 1 through the first thread and the second thread, respectively. When the main pipe 1 rotates along its own axis, the two lead screws 2 can move closer or further apart along the axis of the main pipe 1, thereby tightening or loosening the rope to adjust the rope tension. It can be understood that the surfaces of the two lead screws 2 are respectively provided with grooves that mesh with the first thread and the second thread. Through the meshing of the grooves on the two lead screws 2 with the first thread and the second thread, rotational motion is converted into linear motion. Furthermore, when the main pipe 1 rotates in one direction along its own axis, the two lead screws 2 can move closer together along the axis of the main pipe 1; similarly, when the main pipe 1 rotates in the opposite direction along its own axis, the two lead screws 2 can move further apart along the axis of the main pipe 1.

[0030] Specifically, when the two lead screws 2 approach each other along the axis of the main pipe 1, the two ends of the rope also approach each other, and the tension of the rope gradually increases, and the overall state of the rope tends to be taut; when the two lead screws 2 move away from each other along the axis of the main pipe 1, the two ends of the rope also move away from each other, and the tension of the rope gradually decreases, and the overall state of the rope tends to be slack.

[0031] The moving assembly also includes a locking sleeve 4 and a locking element. One end of the locking sleeve 4 is connected to the lead screw 2, and a guide cavity 41 is provided axially inside the locking sleeve 4. The guide cavity 41 is used to accommodate the rope, and the locking element can be placed inside the guide cavity 41 to press the rope against the inner wall of the guide cavity 41. In other words, the rope is fixed by the cooperation of the locking sleeve 4 and the locking element. In addition, the guide cavity 41 provided inside the locking sleeve 4 can also provide guidance for the rope, ensuring that the rope is as parallel as possible to the axis of the lead screw 2, preventing the rope from shaking violently after being connected to the lead screw 2, and improving the running stability after the rope is connected.

[0032] The other end of the locking sleeve 4 is provided with a rope inlet 42, which communicates with the guide cavity 41, allowing the rope to enter the guide cavity 41 through the rope inlet 42. Specifically, the rope enters the guide cavity 41 through the rope inlet 42 and is then radially pressed by the locking element. Additionally, a sealing plug can be provided at the rope inlet 42, positioned around the rope. This not only prevents foreign objects from falling into the guide cavity 41 but also prevents the rope from swaying at the rope inlet 42, further improving connection stability.

[0033] Furthermore, a through hole 43 is provided on the side wall of the locking sleeve 4. The through hole 43 is arranged radially along the locking sleeve 4 and communicates with the guide cavity 41. The locking member can be placed in the guide cavity 41 through the through hole 43 and press the rope against the inner wall of the guide cavity 41 corresponding to the through hole 43. Specifically, the rope is placed axially in the locking sleeve 4 within the guide cavity 41, and the locking member enters from the through hole 43 on the side wall of the locking sleeve 4, pressing the rope against the inner wall of the guide cavity 41, thereby fixing the rope.

[0034] To improve the fixing strength, multiple through holes 43 are provided, and the multiple through holes 43 are spaced apart along the axial direction of the locking sleeve 4. At this time, multiple locking elements can be inserted through multiple through holes 43 to press the rope against the inner wall of the guide cavity 41 corresponding to the through hole 43, thereby fixing multiple positions on the rope and realizing multiple fixing of the rope.

[0035] Furthermore, to ensure consistent structural strength of the locking sleeve 4 along its circumference, through holes 43 can be provided on all circumferences of the locking sleeve 4, with only one through hole 43 on the same radial direction. Each through hole 43 corresponds to the inner wall of the guide cavity 41, ensuring that the locking element has a pressing position when entering the guide cavity 41 through the through hole 43, thus pressing the rope against the inner wall of the guide cavity 41. In this embodiment, to facilitate rope fixation, the through holes 43 are located on two corresponding side walls of the locking sleeve 4. In this case, the force pressing against the rope comes from the same straight line, reducing the difficulty of fixing.

[0036] In addition, when securing the rope, to prevent bending caused by the simultaneous compression of different sides of the rope by the locking device, the locking device can be inserted only into the through hole 43 on the same side. This avoids the rope being subjected to stress from multiple directions, which could lead to breakage. At this time, the other through holes 43 are idle. The idle through holes 43 can ensure air convection inside the locking sleeve 4, keeping the interior dry, inhibiting mold growth, and extending the service life of the rope and other metal accessories. On the other hand, it can also ensure the pressure balance between the guide cavity 41 and the outside environment, preventing the rope tensioner from shaking violently in strong winds, further improving safety.

[0037] An adjustment hole 11 is provided on the outer wall of the main pipe 1 to accommodate an adjustment component, allowing the main pipe 1 to be driven to rotate along its own axis. The operator can insert the adjustment component into the adjustment hole 11 and rotate it circumferentially to drive the main pipe 1 to rotate along its own axis. When the main pipe 1 rotates around its own axis, the torque is transmitted through the adjustment component as a lever arm, requiring only a small external force from the operator to rotate the main pipe 1, thus improving operational comfort.

[0038] Furthermore, the adjustment hole 11 penetrates the two side walls of the main pipe 1 radially, and the adjustment component can penetrate the entire side wall of the main pipe 1. In other words, part of the adjustment component can be exposed on both sides of the main pipe 1, and the adjustment component can be operated on both sides of the main pipe 1, which improves the ease of operation.

[0039] In addition, the first thread and the second thread are spaced apart along the axis of the main pipe 1 and are symmetrically arranged with respect to the adjustment hole 11, so that the rotational torque applied to the main pipe 1 is evenly distributed on both sides of the adjustment hole 11, thereby improving the rotational stability of the main pipe 1.

[0040] The moving component also includes a limiting sleeve 3, which is fitted onto the ends of the two lead screws 2 that are far apart from each other, and is located on the side of the locking sleeve 4 near the lead screw 2. This arrangement ensures that when the lead screw 2 moves towards the side of the main pipe 1, it will not completely enter the main pipe 1, thus leaving room for the adjustment hole 11 in the middle of the main pipe 1, and preventing the lead screw 2 from being completely screwed into the main pipe 1 and blocking the adjustment hole 11, thereby affecting the insertion of the adjustment component.

[0041] To improve the stiffness and rigidity of the rope tensioner, the main pipe 1, the lead screw 2, and the locking sleeve 4 are all made of alloy materials. Preferably, the main pipe 1 and the lead screw 2 are both made of aluminum alloy.

[0042] Furthermore, a viewing area can be provided on the main pipe 1, and an auxiliary mark can be provided on the lead screw 2. The operator can observe the auxiliary mark on the lead screw 2 through the viewing area on the main pipe 1, and thus know the distance the lead screw 2 has moved along the axis of the main pipe 1, which facilitates fine adjustment of the lead screw 2 within the main pipe 1. Preferably, the auxiliary mark can be a scale mark.

[0043] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A rope tensioner, characterized in that, include: The main tube (1) and two movable components, the two movable components being able to be connected to the two ends of the rope respectively, and the two movable components being able to move along the axial direction of the main tube (1); Each moving component includes a lead screw (2). The inner walls at both ends of the main tube (1) are provided with a first thread and a second thread with opposite directions of rotation. The two lead screws (2) are connected to the main tube (1) through the first thread and the second thread, respectively. When the main tube (1) rotates along its own axis, the two lead screws (2) can move closer or further away from each other along the axis of the main tube (1) to adjust the tension of the rope. The moving assembly also includes a locking sleeve (4) and a locking member. One end of the locking sleeve (4) is connected to the lead screw (2), and a guide cavity (41) is provided in the locking sleeve (4) extending axially to accommodate the rope. The locking member can be placed in the guide cavity (41) to press the rope against the inner wall of the guide cavity (41).

2. The rope tensioner according to claim 1, characterized in that, The locking sleeve (4) has a through hole (43) on its side wall. The locking member can pass through the through hole (43) and press the rope against the inner wall of the guide cavity (41) corresponding to the through hole (43).

3. The rope tensioner according to claim 2, characterized in that, Multiple through holes (43) are provided, and the multiple through holes (43) are spaced apart along the axial direction of the locking sleeve (4).

4. The rope tensioner according to claim 3, characterized in that, The locking sleeve (4) is provided with through holes (43) in all directions, and only one through hole (43) is provided in the same radial direction of the locking sleeve (4).

5. The rope tensioner according to claim 1, characterized in that, The moving component also includes a limiting sleeve (3), which is fitted onto the ends of the two lead screws (2) that are far apart from each other.

6. The rope tensioner according to claim 1, characterized in that, An adjustment hole (11) is provided on the outer wall of the main tube (1) for accommodating the adjustment component so that the main tube (1) can be driven to rotate along its own axis.

7. The rope tensioner according to claim 6, characterized in that, The adjustment hole (11) penetrates the main pipe (1) radially.

8. The rope tensioner according to claim 6, characterized in that, The first thread and the second thread are spaced apart along the axial direction of the main pipe (1) and are symmetrically arranged with respect to the adjustment hole (11).

9. A flag-raising device, characterized in that, Includes the rope tensioner as described in any one of claims 1-8.

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