Telescopic safety rope

Abstract

The telescopic safety rope comprises a box body, a winding wheel, a first safety rope body and a second safety rope body, the box body is fixed to a lamp, and the winding wheel is rotatably installed in the box body; one end of the first safety rope and one end of the second safety rope are limiting ends, the limiting ends are arranged on the winding wheel in a surrounding mode, the other end of the first safety rope and the other end of the second safety rope are free ends, and the free ends extend out of the two side faces of the box body respectively. Two limiting grooves, two clamping grooves and two first wire outlets are formed in the rope winding body in a central symmetry mode, the limiting ends of the first safety rope and the second safety rope are installed on the two limiting grooves in a limiting mode respectively, the limiting grooves are communicated with the first wire outlets through the clamping grooves, and the rope body led out of the limiting ends is clamped in the clamping grooves firstly and then clamped in the clamping grooves. And the wire is led out from the first wire outlet and is wound on the rope winding body. The invention provides an efficient limiting structure of a double-rope-outlet telescopic safety rope.

Description

Technical Field

[0001] The present invention relates to the field of lighting safety devices, and in particular to a telescopic safety rope. Background Art

[0002] In the field of stage lighting equipment, in order to create a dynamic stage effect, the installation of lighting fixtures is divided into two types: long-term fixed (such as in scenes like TV studio, theater, auditorium, etc.) and mobile performances (such as in large-scale celebrations, star concerts, etc. that require repeated disassembly and assembly to adapt to different stages). During the installation of these lighting fixtures, to ensure stability and the safety of personnel in the performance venue, the base of the lighting fixture needs to be connected to the installation bracket through a safety rope to prevent the lighting fixture from falling from a height due to the failure of the lamp hook or installation operation errors, playing a secondary protection role. For example, Figure 1 As shown in the telescopic safety rope of a lighting fixture in the prior art, it can be determined that the box body 100 in Figure 1 only has one telescopic safety rope 300 provided. The safety rope 300 is connected with a buckle 400. When using this telescopic safety rope, the box body 100 will be fixed on the lighting fixture, and the buckle 400 will take the safety rope 300 to bypass the installation frame of the lighting fixture and then buckle it on the safety rope again. The usage method is relatively single. By increasing the number of safety ropes 300, the usage methods of the telescopic safety rope can be increased, making the application scenarios of the telescopic safety rope more extensive. The safety rope can also be wound around different installation frames to form a double-insurance structure. However, increasing the number of safety ropes requires improving the limiting structure inside the box body for the safety ropes. Since the space inside the box body is limited, a more efficient limiting structure is needed to limit multiple safety ropes simultaneously, so as to prevent the safety ropes from detaching from the box body during telescoping and causing safety accidents. Summary of the Invention

[0003] The purpose of the present invention is to solve the above technical problems and provide an efficient limiting structure for a telescopic safety rope with two output ropes.

[0004] A telescopic safety rope, comprising a box body, a wire reel, a first safety rope and a second safety rope. The box body is fixed on a lamp. The box body includes an upper box body and a lower box body which are assembled up and down. The wire reel is rotatably installed inside the box body. The wire reel includes an upper wheel disc and a lower wheel disc which are assembled up and down. One end of the first safety rope and the second safety rope is a limiting end, and the limiting end is looped around the wire reel. The other ends of the first safety rope and the second safety rope are free ends, and the free ends respectively extend out of the box body from two side surfaces of the box body. The first safety rope and the second safety rope can freely stretch and contract under the drive of the wire reel. A rope winding body for winding the rope is provided on the wire reel. Two limiting grooves, two clamping grooves and two first wire outlets are arranged in a centrally symmetric manner in the rope winding body. The limiting ends of the first safety rope and the second safety rope are respectively and limitedly installed on the two limiting grooves. The limiting grooves communicate with the first wire outlets through the clamping grooves. The rope bodies led out from the limiting ends are first clamped in the clamping grooves and then led out from the first wire outlets and wound around the rope winding body.

[0005] According to the telescopic safety rope of the present application, a double-rope structure is adopted. Compared with the existing telescopic safety rope with a single rope, under the same specifications, the height of the rope outlet of the double-rope telescopic safety rope of the present application will be reduced, which can reduce the impact force on the safety rope when the lamp has a falling accident. When the first safety rope and the second safety rope are simultaneously hung on the mounting bracket of the lamp, the load-bearing capacity of the telescopic safety rope can be doubled. Since the safety rope is increased, the use method of the telescopic safety rope is also more abundant. The limiting ends of the first safety rope or the second safety rope are first limited by the limiting grooves, and then the clamping grooves clamp and limit the rope bodies led out from the limiting grooves, avoiding the transfer of the action to the limiting ends when the safety rope stretches and contracts, and also avoiding the failure of the limiting structure due to the repeated friction of the limiting ends in the limiting grooves, and forming a double limiting structure of the limiting grooves and the clamping grooves, thus forming a more efficient limiting structure for the safety rope.

[0006] Further, a torsion spring is further included. A cavity is provided in the middle of the wire reel. A shaft body is provided on the box body. The shaft body extends into the cavity to form a mounting cavity for installing the torsion spring. The fixed end of the torsion spring is clamped on the shaft body, and the movable end of the torsion spring is clamped on the wire reel. The torsion spring provides a restoring elastic force for the first safety rope and the second safety rope. The torsion spring can store elastic force when the first safety rope and the second safety rope are pulled out of the box body, and release the elastic force when the first safety rope and the second safety rope retract, so that the first safety rope and the second safety rope are reset.

[0007] Still further, the wire reel extends towards the cavity to form an extension ring surrounding the mounting cavity. A through hole for the shaft body to pass through is provided in the middle of the extension ring. The extension ring can cooperate with the shaft body to make the wire reel rotate around the shaft body more stably, without making abnormal noises by moving randomly in the box body, and the extension ring can also limit the torsion spring to prevent the torsion spring from disengaging from the mounting cavity.

[0008] Furthermore, two second wire outlets are provided on the box body, and protective sleeves are provided in both of the two second wire outlets. The first safety rope and the second safety rope respectively pass through the two protective sleeves.

[0009] Furthermore, the free ends of the first safety rope and the second safety rope respectively form fixing rings by surrounding, and at least one of the fixing rings is connected with a buckle.

[0010] Furthermore, limiting spikes are provided in the clamping grooves, and the limiting spikes penetrate into the rope body for limiting. The limiting spikes can better clamp the rope body, prevent the rope body from shifting in the clamping groove, and cooperate with the limiting grooves to form a variety of limiting structures, so that the installation performance of the product is stronger.

[0011] Furthermore, the upper wheel disc and the lower wheel disc are combined to form the rope winding body, and the limiting spikes in the clamping groove of the upper wheel disc are arranged in a staggered manner with the limiting spikes in the clamping groove of the lower wheel disc. The winding wheel is arranged in a split manner, which is convenient for installing each part onto the winding wheel. The arrangement of limiting spikes in both the clamping grooves of the upper wheel disc and the lower wheel disc can improve the limiting effect. The staggered arrangement of the limiting spikes can prevent the upper and lower limiting spikes from acting on the same position of the rope body, thereby avoiding damage to the rope body by the limiting spikes as much as possible.

[0012] Furthermore, it further includes a fixing plate. One end of the fixing plate is fixed on the box body, and the other end of the fixing plate extends out a fixing ear. The box body is fixed to the lamp through the fixing ear. When the telescopic safety rope cannot be directly installed on the lamp, the fixing plate can be used for auxiliary installation, so that the telescopic safety rope is indirectly fixed on the lamp.

[0013] Furthermore, the upper box body and the lower box body are fixedly connected through a threaded connection structure. The fixing plate is provided with a first fixing hole at the fixing position corresponding to the threaded connection structure, so that the fixing plate is fixedly connected to the upper box body and the lower box body through the shared threaded connection structure.

[0014] Furthermore, a second fixing hole is provided in the middle of the box body, and a third fixing hole is provided at the position of the fixing plate corresponding to the second fixing hole. The box body and the fixing plate are connected and fixed by a connecting piece passing through the second fixing hole and the third fixing hole. Description of the Drawings

[0015] Figure 1 It is a three-dimensional view of an existing telescopic safety rope.

[0016] Figure 2 It is a three-dimensional view of the telescopic safety rope of the present invention.

[0017] Figure 3 It is an exploded view of the telescopic safety rope of the present invention.

[0018] Figure 4 This is a perspective view of the reel of the retractable safety rope of the present invention.

[0019] Figure 5 This is a perspective view of the reel of the retractable safety rope of the present invention from another angle.

[0020] Figure 6 This is an exploded view of the retractable safety rope of the present invention equipped with a fixed plate.

[0021] Figure 7 This is an exploded view of the retractable safety rope of the present invention equipped with another fixed plate. Detailed implementation manners

[0022] A retractable safety rope of the present invention will be described in conjunction with the accompanying drawings.

[0023] As Figures 2 to 7 shown, a retractable safety rope includes a box body 1, a reel 2, a first safety rope 3 and a second safety rope 4. The box body 1 is fixed on a lamp. The reel 2 is rotatably installed inside the box body 1. The reel 2 is rotatably installed inside the box body 1. One end of the first safety rope 3 and the second safety rope 4 is a limiting end, and the limiting end is looped around the reel 2. The other ends of the first safety rope 3 and the second safety rope 4 are free ends, and the free ends respectively extend to the outside from two side surfaces of the box body 1. The ends of the free ends of the first safety rope 3 and the second safety rope 4 respectively form fixing rings (31, 41). A buckle 5 is connected to at least one of the fixing rings (31, 41). In the embodiment shown in the drawings of the present application, a buckle 5 is connected to the fixing ring (31, 41) of the first safety rope 3, and no buckle 5 is connected to the fixing ring (31, 41) of the second safety rope 4. The first safety rope 3 and the second safety rope 4 can freely expand and contract under the drive of the reel 2. The double-outlet retractable safety rope adopted in the present application can reduce the impact of the safety rope when the lamp falls and significantly improve the load-bearing capacity of the safety rope. It is suitable for more installation environments, and the first safety rope 3 and the second safety rope 4 can also be respectively hung on different mounting brackets to form a double-insurance structure.

[0024] As Figure 3 shown, it further includes a torsion spring 6. A cavity is provided in the middle of the reel 2. A shaft body 16 is provided on the box body 1. The shaft body 16 extends into the cavity to form an installation cavity 23 for installing the torsion spring 6. The fixed end 61 of the torsion spring 6 is clamped on the shaft body 16, and the movable end 62 of the torsion spring 6 is clamped on the reel 2. The torsion spring 6 provides a restoring elastic force for the first safety rope 3 and the second safety rope 4.

[0025] As Figure 4As shown, the winding wheel 2 extends into the cavity to form an extension ring 231 surrounding the installation cavity 23. A through hole 232 for the shaft body 16 to pass through is provided in the middle of the extension ring 231. The extension ring 231 can be in clearance fit with the shaft body 16, enabling the winding wheel 2 to rotate stably around the shaft body 16 without making abnormal noises due to random movement within the box body 1. Moreover, the extension ring 231 can also provide a limit for the winding spring 6 to prevent the winding spring 6 from detaching from the installation cavity 23.

[0026] As Figure 3 and Figure 4 As shown, a first clamping position 161 is provided on the shaft body 16. The fixed end 61 of the winding spring 6 is bent so that it can be clamped into the first clamping position 161 for fixation. A second clamping position 233 is provided on the extension ring 231. The movable end 62 of the winding spring 6 is bent so that it can be clamped into the second clamping position 233 and rotate as the winding wheel 2 rotates. This enables the winding spring 6 to store elastic force when the first safety rope 3 and the second safety rope 4 are pulled out of the box body 1, and release the elastic force when the first safety rope 3 and the second safety rope 4 retract, causing the first safety rope 3 and the second safety rope 4 to reset as the winding wheel 2 rotates.

[0027] As Figures 3 to 5 As shown, two limiting grooves 241 are symmetrically provided on the winding wheel 2. The axis of symmetry is the connecting line of the centers of the limiting grooves 241, or the line passing through the center of the winding wheel 2 between the two limiting grooves 241, or the two limiting grooves 241 can coincide after rotating 180 degrees. The limiting ends of the first safety rope 3 and the second safety rope 4 are respectively installed in the two limiting grooves 241 in a limiting manner. The limiting ends of the first safety rope 3 and the second safety rope 4 are limiting spheres (32, 42). The limiting spheres (32, 42) are accommodated in the limiting grooves 241, and the rope bodies led out from the limiting ends extend out of the limiting grooves 241 from the outlets of the limiting grooves 241. Since the size of the limiting spheres (32, 42) is larger than the size of the outlets of the limiting grooves 241, the limiting ends of the first safety rope 3 and the second safety rope 4 are respectively installed in the two limiting grooves 241 in a limiting manner.

[0028] As Figures 3 to 5As shown, the rope winding body 24 for winding the rope is provided on the winding wheel 2. The limiting groove 241 is arranged inside the rope winding body 24. Two clamping grooves 242 and two first wire outlets 243 are further provided on the rope winding body 24. The clamping grooves 242 and the first wire outlets 243 are arranged in a centrosymmetric manner. The outlet of the limiting groove 241 is the clamping groove 242, and the limiting groove 241 communicates with the first wire outlet 243 through the clamping groove 242. That is, after the winding wheel 2 is rotated 180 degrees, the two limiting grooves 241, the two clamping grooves 242, and the two first wire outlets 243 can coincide. The rope body led out from the limiting end is first clamped in the clamping groove 242, and then led out from the first wire outlet 243 and wound around the rope winding body 24. The clamping groove 242 clamps and limits the rope body led out from the limiting groove 241, preventing the action from being transmitted to the limiting end when the safety rope expands and contracts, and thus avoiding the failure of the limiting structure caused by the repeated friction of the limiting end in the limiting groove 241. Therefore, the service life of the telescopic safety rope can be increased by clamping the rope body through the clamping groove 242, as Figure 5 shown, the rope body of the second safety rope 4 finally leads out from the first wire outlet 243.

[0029] as Figure 2 and Figure 3 shown, two second wire outlets are provided on the box body 1, and protective sleeves 17 are provided at the two second wire outlets. The first safety rope 3 and the second safety rope 4 pass through the protective sleeves 17, thereby preventing the first safety rope 3 and the second safety rope 4 from cutting the box body 1 during expansion and contraction.

[0030] as Figure 3 shown, limiting spikes 2421 are provided in the clamping groove 242. The limiting spikes 2421 penetrate into the rope body for limiting. The limiting spikes 2421 can better clamp the rope body, prevent the rope body from shifting in the clamping groove 242, and cooperate with the limiting groove 241 to form a variety of limiting structures, making the installation performance of the product stronger. The limiting spikes 2421 are designed with a narrow top and a wide bottom structure, which can not only effectively penetrate the rope body to achieve limiting, but also avoid cutting and damaging the rope body.

[0031] as Figure 3 and Figure 4As shown, the wire winding wheel 2 includes an upper wheel disc 21 and a lower wheel disc 22. The upper wheel disc 21 and the lower wheel disc 22 are joined together to form the rope winding body 24. Two limiting grooves 241, two clamping grooves 242, and two first wire outlets 243 on the wire winding wheel 2 respectively form two sets of structures for clamping the safety rope. At least two limiting grooves 241 and two clamping grooves 242 are formed by the joining of the upper wheel disc 21 and the lower wheel disc 22. The limiting spikes 2421 in the clamping groove 242 of the upper wheel disc 21 and the limiting spikes 2421 in the clamping groove 242 of the lower wheel disc 22 are arranged in a staggered manner. While improving the limiting effect, the staggered arrangement of the limiting spikes 2421 can prevent the upper and lower limiting spikes 2421 from acting on the same position of the rope body, thereby reducing the damage to the rope body. There are two fixing positions for the joining of the upper wheel disc 21 and the lower wheel disc 22 between the two sets of clamping safety box structures. The fixing positions include a fixing convex position 244 and a fixing concave position 245. One of the two mounting positions of the upper wheel disc 21 is the fixing convex position 244, and the other is the fixing concave position 245. The lower wheel disc 22 is also provided with a fixing convex position 244 and a fixing concave position 245. The fixing convex position 244 of the upper wheel disc 21 is aligned with the fixing concave position 245 of the lower wheel disc 22, and the other fixing convex position 244 and fixing concave position 245 are also arranged opposite to each other. A screw hole is provided on the fixing convex position 244. The fixing convex position 244 and the fixing concave position 245 are connected by screws to form the wire winding wheel 2. A positioning post 2451 is provided on the fixing concave position 245, and a positioning groove 2441 is provided on the fixing convex position 244. The positioning post 2451 and the positioning groove 2441 cooperate to position when the upper wheel disc 21 and the lower wheel disc 22 are joined. This setting can balance the weights of the upper wheel disc 21 and the lower wheel disc 22, enabling the wire winding wheel 2 to maintain balance during rotation and avoiding severe wear on one side of the wheel disc.

[0032] As Figure 6 and Figure 7 shown, it further includes a fixing plate 7. One end of the fixing plate 7 is fixed on the box body 1, and the other end of the fixing plate 7 extends out a fixing ear 73. The box body 1 is fixed to the lamp through the fixing ear 73. As Figure 6 shown, the fixing ear 73 can be arranged parallel to the main body of the fixing plate 7. As Figure 7 shown, the fixing ear 73 can be arranged perpendicular to the main body of the fixing plate 7, enabling the user to select a suitable fixing plate 7 to install the telescopic safety rope according to needs.

[0033] As Figure 3 , Figure 6 and Figure 7As shown, the box body 1 includes an upper box body 14 and a lower box body 15. The upper box body 14 and the lower box body 15 are fixedly connected through a threaded connection structure 12. The fixing plate 7 is provided with a first fixing hole 71 at the fixed position corresponding to the threaded connection structure 12, so that the fixing plate 7 and the upper box body 14 and the lower box body 15 are fixedly connected by sharing the threaded connection structure 12.

[0034] In addition, as Figure 2 and Figure 3 shown, the present application also improves the drain port 13. The drain port 13 is arranged on the bottom surface of the lower box body 15. The inlet of the drain port 13 is kept flush with the bottom surface of the lower box body 15 or arranged at the lowest position of the bottom surface of the lower box body 15 to avoid water accumulation on the bottom surface of the lower box body 15. The outlet of the drain port 13 extends with a drain groove towards the side surface of the lower box body 15, so that the water flowing out of the box body 1 can flow out along the drain groove.

[0035] A second fixing hole 11 is provided in the middle of the box body 1. The second fixing hole 11 is arranged in the middle of the shaft body 16. The fixing plate 7 is provided with a third fixing hole 72 at the position corresponding to the second fixing hole 11. The box body 1 and the fixing plate 7 are connected and fixed by a connecting member 8 passing through the second fixing hole 11 and the third fixing hole 72. As Figure 6 described, when the second fixing hole 11 and the third fixing hole 72 are through holes, two connecting members 8 can be used to be threadedly connected up and down to clamp and fix the fixing plate 7 and the box body 1. As Figure 7 shown, when the second fixing hole 11 and the third fixing hole 72 are threaded holes, a bolt connecting member 8 can be directly used to connect the second fixing hole 11 and the third fixing hole 72, thereby connecting and fixing the fixing plate 7 and the box body 1.

[0036] According to the disclosure and teaching of the above specification, those skilled in the art to which the present invention pertains can also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above. Some modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to the present invention.

Claims

1. A telescopic safety rope, characterized in that, It includes a box body, a wire reel, a first safety rope and a second safety rope. The box body is fixed on the lamp. The box body includes an upper box body and a lower box body which are spliced up and down. The wire reel is rotatably installed inside the box body. The wire reel includes an upper wheel disc and a lower wheel disc which are spliced up and down. One end of the first safety rope and the second safety rope is a limiting end, and the limiting end is looped around the wire reel. The other end of the first safety rope and the second safety rope is a free end, and the free ends extend out of the two sides of the box body respectively. The first safety rope and the second safety rope can freely stretch under the drive of the wire reel. A rope winding body for winding the rope is provided on the wire reel. Two limiting grooves, two clamping grooves and two first wire outlets are arranged in the rope winding body in a centrosymmetric manner. The limiting ends of the first safety rope and the second safety rope are respectively and limitedly installed on the two limiting grooves. The limiting grooves communicate with the first wire outlets through the clamping grooves. The rope bodies led out from the limiting ends are first clamped in the clamping grooves and then led out from the first wire outlets and wound around the rope winding body.

2. The telescopic safety rope according to claim 1, characterized in that, It further includes a torsion spring. A cavity is provided in the middle of the wire reel. A shaft body is provided on the box body, and the shaft body extends into the cavity to form an installation cavity for installing the torsion spring. The fixed end of the torsion spring is clamped on the shaft body, and the movable end of the torsion spring is clamped on the wire reel. The torsion spring provides a restoring elastic force for the first safety rope and the second safety rope.

3. The telescopic safety rope according to claim 2, wherein, The wire reel extends towards the cavity to form an extension ring surrounding the installation cavity, and a through hole for the shaft body to pass through is provided in the middle of the extension ring.

4. The telescopic safety rope according to claim 1, wherein Two second wire outlets are provided on the box body, and protective sleeves are provided in both of the two second wire outlets. The first safety rope and the second safety rope respectively pass through the two protective sleeves.

5. The telescopic safety rope according to claim 1, characterized in that, Fixing rings are respectively formed around the ends of the free ends of the first safety rope and the second safety rope, and at least one of the fixing rings is connected with a buckle.

6. The telescopic safety rope according to claim 1, wherein Limiting spikes are provided in the clamping grooves, and the limiting spikes penetrate into the rope bodies for limiting.

7. The telescopic safety rope according to claim 6, characterized in that, The upper wheel disc and the lower wheel disc are spliced to form the rope winding body, and the limiting spikes in the clamping grooves of the upper wheel disc are arranged in a staggered manner with the limiting spikes in the clamping grooves of the lower wheel disc.

8. The telescopic safety rope according to claim 1, characterized in that, It further includes a fixing plate. One end of the fixing plate is fixed on the box body, and a fixing ear extends from the other end of the fixing plate. The box body is fixed on the lamp through the fixing ear.

9. The telescopic safety rope according to claim 8, characterized in that, The upper box body and the lower box body are fixedly connected through a threaded connection structure. The fixing plate is provided with a first fixing hole at the fixed position corresponding to the threaded connection structure, so that the fixing plate and the upper box body and the lower box body are fixedly connected through the shared threaded connection structure.

10. The telescopic safety rope according to claim 8, characterized in that, A second fixing hole is provided in the middle of the box body, and a third fixing hole is provided at the position of the fixing plate corresponding to the second fixing hole. The box body and the fixing plate are connected and fixed by a connecting piece passing through the second fixing hole and the third fixing hole.

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