String cable adjusting device with tension indication function

Abstract

A tension cable adjustment device with tension force indication function relates to the technical field of tension cable adjustment mechanisms. This invention addresses the problem that existing tension cable adjustment devices lack tension force indication functionality, requiring operators to rely solely on experience to check the tension of the tension cable, making accurate and convenient inspection and adjustment of the tension difficult. The device includes a support plate, a fixing device, ear plates, a cable shaft, a ratchet shaft, a ratchet, a pawl, and a torque indicator. The bottom surface of the support plate is equipped with the fixing device, and the upper surface of the support plate has two ear plates. A cable shaft is rotatably connected between the two ear plates, and a ratchet shaft is rotatably connected inside the cable shaft. A ratchet is located at the end of the ratchet shaft, and a pawl is located on the ear plates. The cable shaft and the ratchet shaft are connected via a torque indicator. This invention is used for tension cable adjustment.

Description

Technical Field

[0001] This utility model relates to the technical field of tension cable adjustment mechanisms, and in particular to a string cable adjustment device with tension force indication function. Background Technology

[0002] Tensioned cable-stayed membrane structures are a new type of spatial structure system that integrates the advantages of tensioned cable structures and cable-membrane structures, and are widely used in large-span public buildings. Its core components include flexible membrane material, high-strength cables, rigid struts, and a lower supporting structure. By applying pretension to the membrane material and cables, the membrane surface forms a stable hyperbolic or simple curved shape. The cables and struts together constitute a tension balance system, effectively transferring external loads to the lower supporting structure, thus fully utilizing the tensile strength of the membrane material and cables. The tension cables in a tensioned cable-stayed membrane structure are the core load-bearing components and tension transfer carriers of this structural system; their function directly determines the overall stiffness, stability, and load-bearing capacity of the structure. Through precise pre-tensioning during the construction phase, the tension cable forms a collaborative force-bearing system with the flexible membrane material and rigid struts. It bears the horizontal and vertical components of the force generated by the membrane surface due to its own weight, wind load, and snow load, and efficiently transfers these loads to the supporting structures such as the lower steel columns and concrete foundations along the preset path, avoiding local stress concentration. At the same time, the tension generated by pre-tensioning can "tighten" the membrane surface, helping the membrane material to form a stable hyperbolic or single-curved shape, while also offsetting some of the deformation effects of external loads on the structure.

[0003] The degree of slack in the tension cables directly determines the stress stability, morphological integrity, and long-term safety of the tensioned membrane structure. If the tension cables are slack, the membrane surface will lose its restraint and develop wrinkles and sag. Under repeated loading, slack tension cables are prone to fatigue damage, and in a slack state, the contact points between the cable and other components may experience localized wear, accelerating the destruction of the anti-corrosion layer and causing corrosion. If the slack is not corrected in time, it may lead to localized breakage of the tension cables over time, resulting in partial collapse of the membrane surface. In severe cases, it may even threaten the stability of the overall structure and cause a safety accident.

[0004] Therefore, the tension of the tension cable needs to be checked regularly, and adjustments made promptly when the tension is insufficient. However, existing tension cable adjustment devices do not have a tension indication function. Workers can only estimate the tension of the tension cable based on experience, and cannot accurately and conveniently check and adjust the current tension of the tension cable. Utility Model Content

[0005] This invention addresses the problem that existing tension cable adjustment devices lack tension indication functionality, forcing workers to rely solely on experience to check the tension of the tension cable, making it difficult to accurately and conveniently check and adjust the tension of the tension cable chords. Therefore, this invention provides a chord adjustment device with tension indication functionality to solve the problems mentioned in the background section.

[0006] The technical solution of this utility model is:

[0007] A cable adjustment device with tension indication function includes a support plate, a fixing device, an ear plate, a cable shaft, a ratchet shaft, a ratchet, a pawl, and a torque indication device;

[0008] The bottom surface of the support plate is equipped with a fixing device, and the upper end surface of the support plate is equipped with two ear plates. A cable shaft is rotatably connected between the two ear plates, and a ratchet shaft is rotatably connected inside the cable shaft. A ratchet is provided at the end of the ratchet shaft, and a pawl is provided on the ear plates. The cable shaft and the ratchet shaft are connected by a torque indicator device.

[0009] Furthermore, the torque indicating device includes a base plate, a rotating handle, an elastic mechanism, and a pointer;

[0010] The base plate is fixedly connected to the cable shaft, and the rotating handle is fixedly connected to the ratchet shaft. The base plate and the rotating handle are connected by a flexible mechanism, and a pointer is provided on the rotating handle.

[0011] Furthermore, the elastic mechanism is a spring, an arc-shaped groove is provided on the base plate, a slider is provided on the rotating handle, the slider is slidably connected in the arc-shaped groove, the spring is installed in the arc-shaped groove, and the two ends of the spring abut against the inside of the arc-shaped groove and the slider, respectively.

[0012] Furthermore, a protective cover is provided on the base plate.

[0013] Furthermore, the protective cover is a transparent structure.

[0014] Furthermore, the protective cover has an observation hole.

[0015] Furthermore, the fixing device includes an arc-shaped pressure plate, a fixing groove is provided on the support plate, and several arc-shaped pressure plates are detachably fixed on the support plate.

[0016] Furthermore, the support plate and the arc-shaped pressure plate are detachably fixed together by bolts.

[0017] Furthermore, a handle is provided on the ratchet shaft.

[0018] Furthermore, two cable baffles are provided on the cable shaft, and a tension cable is fixed on the cable shaft, with the tension cable wound around the cable shaft between the two cable baffles.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] 1. A cable adjustment device with tension indication function, comprising a torque indicator for displaying the current tension of the tension cable. The torque indicator includes a base plate fixed to the cable shaft and a rotating handle fixed to a ratchet shaft, which are connected by an elastic mechanism. The ratchet shaft is fixed to a support plate via a ratchet device. When the tension cable is subjected to a change in force, the elastic mechanism deforms, and the cable shaft and ratchet shaft move relative to each other, thereby causing the pointer on the rotating handle to slide on the base plate according to the change in tension and indicate the corresponding tension value of the tension cable.

[0021] 2. A ratchet mechanism to prevent reverse rotation is provided between the ratchet shaft and the support plate, facilitating the tensioning of the cable. When the torque indicator shows that the cable tension is too low, the ratchet shaft can be rotated by turning the handle to rotate the cable shaft, thus tensioning the cable. The ratchet mechanism locks the ratchet shaft to complete the fixing of the tensioned cable. Attached Figure Description

[0022] Figure 1 This is a structural schematic diagram of the present invention from the upper left perspective;

[0023] Figure 2 This is a structural schematic diagram of the present invention from the lower left perspective;

[0024] Figure 3 This is a schematic diagram of the ratchet mechanism;

[0025] Figure 4 This is a schematic diagram of the assembly structure of the cable shaft and the lug plate;

[0026] Figure 5 This is a longitudinal cross-sectional view of the cable shaft and ratchet shaft;

[0027] Figure 6 Exploded view of the torque indicator device;

[0028] Figure 7 Exploded view of the torque indicator after the protective cover has been removed.

[0029] In the diagram: 1. Support plate; 201. Fixed groove; 202. Arc-shaped pressure plate; 3. Ear plate; 401. Cable shaft; 402. Ratchet shaft; 403. Ratchet; 404. Pawl; 405. Rotating handle; 406. Tensioning cable; 407. Cable baffle; 5. Torque indicator; 501. Base plate; 502. Rotating handle; 504. Pointer; 505. Arc-shaped groove; 506. Spring; 507. Slider; 508. Protective cover. Detailed Implementation

[0030] Specific implementation method one: See Figure 1-5As shown, a string adjustment device with tension indication function is provided in this embodiment, which includes a support plate 1, a fixing device, an ear plate 3, a cable shaft 401, a ratchet shaft 402, a ratchet 403, a pawl 404 and a torque indication device 5.

[0031] A fixing device is provided on the bottom surface of the support plate 1, and two ear plates 3 are provided on the upper end surface of the support plate 1. A cable shaft 401 is rotatably connected between the two ear plates 3. A ratchet shaft 402 is rotatably connected inside the cable shaft 401. A ratchet 403 is provided at the end of the ratchet shaft 402. A pawl 404 is provided on the ear plate 3. The cable shaft 401 and the ratchet shaft 402 are connected by a torque indicator device 5.

[0032] Furthermore, the support plate 1 serves to support and fix the cable. Each end of the upper surface of the support plate 1 has a lug 3, which are parallel and symmetrically arranged. The support plate 1 and the lug 3 are integrally formed. The lug 3 has a shaft hole for rotatably connecting to the cable shaft 401, which is used to fix and wind the tension cable 406. The cable shaft 401 is a tubular hollow structure, with a ratchet shaft 402 rotatably connected to its center.

[0033] by Figure 1 Taking a specific perspective as an example, the right end of the ratchet shaft 402 extends to the outside of the cable shaft 401 and is fixedly connected to the ratchet 403. A pawl 404 is rotatably connected to the ear plate 3 at the right end, and the pawl 404 has a tendency to rotate towards the ratchet 403 via a torsion spring. The ratchet 403 and the pawl 404 mesh to form a one-way rotation locking structure. The torque indicator 5 transmits the torque between the cable shaft 401 and the ratchet shaft 402 while displaying the magnitude of the torque value, thereby realizing the display function of the tension of the tension cable 406.

[0034] Specific Implementation Method Two: See Figure 5-7 As shown, the torque indicating device 5 of this embodiment includes a base plate 501, a rotating handle 502, an elastic mechanism, and a pointer.

[0035] The base plate 501 is fixedly connected to the cable shaft 401, and the rotating handle 502 is fixedly connected to the ratchet shaft 402. The base plate 501 and the rotating handle 502 are connected by a flexible mechanism, and a pointer is provided on the rotating handle 502.

[0036] Furthermore, the base plate 501 of the torque indicating device 5 is circular and welded to the cable shaft 401. A circular hole is provided in the center of the base plate 501, through which the ratchet shaft 402 passes to the left end of the base plate 501. The rotating handle 502 is fixed to the left end of the ratchet shaft 402 by welding. In this embodiment, two rotating handles 502 are provided as an example. A scale plate is provided on the base plate 501, and scale lines are provided on the scale plate.

[0037] The ends of the two rotating handles 502 are connected to the base plate 501 via an elastic mechanism to transmit torque. When the tension cable 406 on the cable shaft 401 is tightened, the cable shaft 401 drives the base plate 501 to rotate synchronously. Meanwhile, the ratchet shaft 402 is connected to the elastic mechanism via the rotating handles 502. At this time, the elastic mechanism undergoes elastic deformation due to the force, causing the cable shaft 401 and the ratchet shaft 402 to rotate relative to each other. The amount of deformation is visually indicated on the base plate 501 by a pointer, reflecting the magnitude of the torque.

[0038] Specific implementation method three: See Figure 5-7 As shown, the elastic mechanism in this embodiment is a spring 506. An arc-shaped groove 505 is provided on the base plate 501, and a slider 507 is provided on the rotating handle 502. The slider 507 is slidably connected in the arc-shaped groove 505, and the spring 506 is installed in the arc-shaped groove 505. The two ends of the spring 506 abut against the inside of the arc-shaped groove 505 and the slider 507, respectively.

[0039] Furthermore, the spring 506 is a compression spring. When the base plate 501 and the rotating handle 502 rotate relative to each other, the slider 507 slides within the arc-shaped groove 505 and compresses the spring 506, causing it to contract. The spring 506 generates elastic force under pressure. The relative rotation angle between the base plate 501 and the rotating handle 502 is proportional to the tension of the tension cable 406, thus displaying the tension of the tension cable 406. As an alternative implementation, the elastic mechanism can be a torsion spring, with both ends of the torsion spring fixed to the base plate 501 and the rotating handle 502, respectively.

[0040] Detailed Implementation Method Four: See [link] Figure 5-6 As shown, a protective cover 508 is provided on the base plate 501 of this embodiment.

[0041] Furthermore, the protective cover 508 is fixed to the base plate 501 with screws. The protective cover 508 covers the upper end of the rotating handle 502, serving to protect the spring 506 and prevent dust and rainwater from corroding the spring 506.

[0042] Specific implementation method five: See Figure 5-6 As shown, the protective cover 508 in this embodiment is a transparent structure.

[0043] Furthermore, to facilitate users' observation of the pointer's rotation angle through the protective cover 508, the protective cover 508 is made of transparent material, allowing users to directly observe the scale value indicated by the pointer.

[0044] Specific implementation method six: See Figure 5-6 As shown, the protective cover 508 of this embodiment has an observation hole.

[0045] Furthermore, the protective cover 508 has an observation hole corresponding to the pointer, which makes it easy to observe the rotation angle of the pointer.

[0046] Detailed implementation method seven: See Figure 2 As shown, the fixing device in this embodiment includes an arc-shaped pressure plate 202, a fixing groove 201 is provided on the support plate 1, and several arc-shaped pressure plates 202 are detachably fixed on the support plate 1.

[0047] Furthermore, the groove 201 and the arc-shaped pressure plate 202 cooperate to form a circular mounting hole, which facilitates fixing the device to the rod. In this embodiment, three arc-shaped pressure plates 202 are provided.

[0048] Detailed Implementation Method Eight: See also Figure 2 As shown, in this embodiment, the support plate 1 and the arc-shaped pressure plate 202 are detachably fixedly connected by bolts.

[0049] Furthermore, the support plate 1 and the arc-shaped pressure plate 202 are fixed together by bolts, which facilitates disassembly and installation.

[0050] Detailed Implementation Method Nine: See also Figure 1 As shown, a handle 405 is provided on the ratchet shaft 402 in this embodiment.

[0051] Furthermore, the handle 405 is used to increase the lever arm for the user to rotate the ratchet shaft 402, and an anti-slip sleeve is provided on the handle 405. To facilitate the opening of the pawl 404, a slot is provided on the shaft of the pawl 404. When it is necessary to release the tension cable 406, a flathead screwdriver is inserted into the slot to move the pawl 404 so that it disengages from the ratchet shaft 402, thereby realizing the release operation of the tension cable 406.

[0052] Detailed Implementation Method Ten: See [link / details] Figure 1 As shown, in this embodiment, two cable baffles 407 are provided on the cable shaft 401, and a tension cable 406 is fixed on the cable shaft 401. The tension cable 406 is wound around the cable shaft 401 between the two cable baffles 407.

[0053] Furthermore, the cable baffle 407 is used to prevent the tension cable 406 from shifting during the winding process, ensuring that it is neatly wound on the cable shaft 401.

[0054] In use, when the torque indicator 5 indicates that the cable tension is too low, the ratchet shaft 402 can be rotated by turning the handle 405 to drive the cable shaft 401 to rotate, thereby tightening the tension cable 406. The ratchet mechanism locks the ratchet shaft 402 to complete the locking of the tension cable 406.

[0055] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A string adjustment device with tension indication function, characterized in that: It includes a support plate (1), a fixing device, an ear plate (3), a cable shaft (401), a ratchet shaft (402), a ratchet (403), a pawl (404), and a torque indicator (5); The bottom surface of the support plate (1) is provided with a fixing device, and the upper end surface of the support plate (1) is provided with two ear plates (3). A cable shaft (401) is rotatably connected between the two ear plates (3). A ratchet shaft (402) is rotatably connected inside the cable shaft (401). A ratchet (403) is provided at the end of the ratchet shaft (402). A pawl (404) is provided on the ear plate (3). The cable shaft (401) and the ratchet shaft (402) are connected by a torque indicator device (5).

2. The cable adjustment device with tension indication function according to claim 1, characterized in that: The torque indicator (5) includes a base plate (501), a rotating handle (502), an elastic mechanism, and a pointer; The base plate (501) is fixedly connected to the cable shaft (401), and the rotating handle (502) is fixedly connected to the ratchet shaft (402). The base plate (501) and the rotating handle (502) are connected by a flexible mechanism. A pointer is provided on the rotating handle (502).

3. The string adjustment device with tension indication function according to claim 2, characterized in that: The elastic mechanism is a spring (506). An arc groove (505) is provided on the base plate (501). A slider (507) is provided on the rotating handle (502). The slider (507) is slidably connected in the arc groove (505). The spring (506) is installed in the arc groove (505). The two ends of the spring (506) abut against the inside of the arc groove (505) and the slider (507) respectively.

4. The string adjustment device with tension indication function according to claim 3, characterized in that: A protective cover (508) is provided on the base plate (501).

5. The string adjustment device with tension indication function according to claim 4, characterized in that: The protective cover (508) is transparent.

6. The string adjustment device with tension indication function according to claim 4, characterized in that: An observation hole is provided on the protective cover (508).

7. The cable adjustment device with tension indication function according to claim 1, characterized in that: The fixing device includes an arc-shaped pressure plate (202), a fixing groove (201) is provided on the support plate (1), and several arc-shaped pressure plates (202) are detachably fixed on the support plate (1).

8. The string adjustment device with tension indication function according to claim 7, characterized in that: The support plate (1) and the arc-shaped pressure plate (202) are detachably fixedly connected by bolts.

9. The cable adjustment device with tension indication function according to claim 1, characterized in that: A handle (405) is provided on the ratchet shaft (402).

10. The cable adjustment device with tension indication function according to claim 1, characterized in that: Two cable baffles (407) are provided on the cable shaft (401), and a tension cable (406) is fixed on the cable shaft (401). The tension cable (406) is wound around the cable shaft (401) between the two cable baffles (407).

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