Anti-falling device for illumination lifting

Abstract

The utility model discloses an anti-falling device for lighting lifting, which comprises a suspension frame, a suspension assembly and a first anti-falling assembly, the suspension assembly and the first anti-falling assembly are arranged on the suspension frame, a first movable pulley and a second movable pulley are arranged in the suspension assembly, and a bearing cable is respectively wound on the double movable pulleys to suspend the suspension frame. Compared with an existing single movable pulley suspension mode, the suspension frame is not prone to shaking greatly, and suspension of the suspension frame is more stable; meanwhile, a first anti-falling assembly is arranged and provided with a first meshing mechanism, a first abutting mechanism and a first linkage rope, the first linkage rope is used for connecting a first meshing piece and a first abutting piece, and when the second suspension section of the bearing cable is broken or loosened, the first abutting piece can be released from the state that the second suspension section continuously abuts against the first abutting piece; and the first meshing piece is driven to swing so as to be meshed with the first suspension section located in the first meshing area immediately, and the anti-falling effect of the device is greatly improved.

Description

Technical Field

[0001] The utility model relates to a mechanical product used in the field of lighting, in particular to an anti-falling device used for lighting lifting. Background Art

[0002] The patent document with publication number CN202729627U discloses a mechanical anti-fall device for a wire rope movable pulley. The device is provided with a movable pulley and a wire rope arranged around the movable pulley, and then provided with an anti-loosening device formed by four wire rope wedges and two sets of wedge guide grooves. When the wire rope breaks accidentally, the movable pulley device that is about to fall is locked on the wire rope. However, the anti-fall device adopts a single pulley design, which is prone to shaking, which is not conducive to the stable suspension of the device and is not suitable for the use of the power supply structure of high-altitude lighting devices. Then, most of the lighting lifting devices currently on the market use a mechanical plug-in locking method to prevent falling. When the wire breaks during the lighting lifting process, the anti-fall structure cannot guarantee the complete locking of the wire, and the anti-fall effect is not ideal. Therefore, there is an urgent need for a more stable and secure anti-fall device for lighting lifting. Utility Model Content

[0003] The purpose of the utility model is to provide an anti-falling device for lighting lifting, so as to solve the problem that the existing lighting lifting anti-falling device is not stable and safe enough.

[0004] The utility model provides the following technical solutions: an anti-falling device for lighting lifting, comprising a suspension frame, a suspension assembly provided on the suspension frame, and a first anti-falling assembly;

[0005] The suspension assembly includes a bearing cable and a movable pulley assembly, wherein the movable pulley assembly includes a first movable pulley and a second movable pulley rotatably mounted on the suspension frame, and the bearing cable is respectively wound around the first movable pulley and the second movable pulley to suspend the suspension frame, so that the bearing cable forms a first suspension segment and a second suspension segment vertically arranged;

[0006] The first anti-fall component includes a first bite mechanism, a first pressing mechanism and a first linkage rope. The first bite mechanism includes a first bite member swingably arranged on the suspension frame. A first bite area is formed between the first bite member and the suspension frame. The first pressing mechanism includes a first pressing member and a first spring. The two ends of the first linkage rope are respectively connected to the first bite member and the first pressing member. One end of the first pressing member presses against the second suspension segment, and one end of the first spring presses against the first pressing member in a direction close to the second suspension segment. When the load-bearing cable breaks and the second suspension segment loosens, the second suspension segment releases the pressure on the first pressing member. At this time, the first pressing member drives the first bite member to swing upward to narrow the first bite area, so that the first bite member continues to squeeze the first suspension segment located in the first bite area to bite and lock the load-bearing cable.

[0007] As described above, in the anti-falling device for lighting lifting, the first engaging part is arranged in a crescent shape, and engaging teeth are provided on the curved surface of the first engaging part. When the first suspension section is squeezed in the first engaging area, the first suspension section rubs the engaging teeth upward along the height direction.

[0008] As described above, in the anti-falling device for lighting lifting, the first engaging mechanism also includes an extrusion surface vertically arranged on the suspension frame, the extrusion surface is provided with the engaging teeth, and the first engaging area is located between the extrusion surface and the curved surface of the first engaging part.

[0009] In the above-mentioned anti-falling device for lighting lifting, one end of the first linkage rope away from the first pressing member is passed through the first engaging member to be fixed to the first engaging member.

[0010] As described above, the anti-fall device for lighting lifting, the first pressing mechanism also includes a sleeve horizontally fixed on the suspension frame, a movable bracket movably connected to the sleeve, and a pressing concave wheel for pressing the second suspension section, the pressing concave wheel is rotatably arranged at one end of the movable bracket, the end of the movable bracket away from the pressing concave wheel is fixed to the end of the first linkage rope away from the first engaging member, the first spring is sleeved on the movable bracket and abuts against the side of the sleeve away from the pressing concave wheel.

[0011] The anti-falling device for lighting lifting as described above also includes a second anti-falling component, which includes a second biting mechanism, a second pressing mechanism and a second linkage rope. The structure of the second biting mechanism is similar to that of the first biting mechanism, and the structure of the second pressing mechanism is similar to that of the first pressing mechanism. The second pressing mechanism is used to press the first suspension segment, and the second biting mechanism is used to bite and lock the second suspension segment.

[0012] In the anti-falling device for lighting lifting as described above, the load-bearing cable forms a third suspension section between the first movable pulley and the second movable pulley, and the third suspension section is arranged horizontally.

[0013] As described above, an anti-falling device for lighting lifting is provided with a horizontally arranged upper support plate and a lower support plate on the suspension frame, the first anti-falling component and the second anti-falling component are both arranged between the upper support plate and the lower support plate, and the first suspension section and the second suspension section are both movably connected to the upper support plate and the lower support plate.

[0014] In the above-mentioned anti-falling device for lighting lifting, a ring-shaped hook is provided at the lower end of the suspension frame.

[0015] Compared with the prior art, the utility model has the following advantages:

[0016] The anti-fall device for lighting lifting of the present invention is provided with a first movable pulley and a second movable pulley in the suspension component, and the load-bearing cable is respectively wound around the double movable pulleys to suspend the suspension frame. Compared with the existing single-moving pulley suspension method, it is not easy to cause the suspension frame to shake greatly, and the suspension of the suspension frame is more stable; at the same time, a first anti-fall component is provided, which is provided with a first bite mechanism, a first pressure mechanism and a first linkage rope. The first linkage rope is used to connect the first bite member and the first pressure member. When the second suspension segment of the load-bearing cable breaks or loosens, the first pressure member will be released from the state of being continuously pressed by the second suspension segment, so as to drive the first bite member to swing and immediately bite the first suspension segment located in the first bite area. This cooperation makes the bite force of the first bite member on the load-bearing cable increase with the increase of the load of the suspension frame, which greatly improves the anti-fall effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a cross-sectional perspective schematic diagram of the anti-fall device of the present invention.

[0018] Figure 2 It is a schematic sectional front view of the anti-falling device of the present invention.

[0019] Figure 3 It is a three-dimensional schematic diagram of the anti-fall device of the present invention at another angle.

[0020] Explanation of the accompanying drawings: 1. Suspension frame; 2. Suspension assembly; 3. First anti-fall assembly; 4. Second anti-fall assembly; 11. Upper support plate; 12. Lower support plate; 13. Hook; 21. Load-bearing cable; 22. Movable pulley group; 31. First bite mechanism; 32. First pressure mechanism; 33. First linkage rope; 41. Second bite mechanism; 42. Second pressure mechanism; 43. Second linkage rope; 211. First suspension section; 212. Second suspension section; 213. Third suspension section; 221. First movable pulley; 222. Second movable pulley; 311. First bite member; 312. First bite area; 313. Biting teeth; 314. Extrusion surface; 321. First pressure member; 322. First spring; 323. Sleeve; 324. Movable bracket; 325. Pressure concave wheel. DETAILED DESCRIPTION

[0021] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] Example 1: Please refer to the attached Figure 1 To the attached Figure 3, this embodiment provides an anti-falling device for lighting lifting, characterized in that it includes a suspension frame 1, a suspension component 2 and a first anti-falling component 3 arranged on the suspension frame 1; the suspension component 2 includes a bearing cable 21 and a movable pulley group 22, the movable pulley group 22 includes a first movable pulley 221 and a second movable pulley 222 rotatably arranged on the suspension frame 1, the bearing cable 21 is respectively wound around the first movable pulley 221 and the second movable pulley 222 to suspend the suspension frame 1, so that the bearing cable 21 forms a vertically arranged first suspension segment 211 and a second suspension segment 212; the first anti-falling component 3 includes a first bite mechanism 31, a first pressing mechanism 32 and a first linkage rope 33, the first bite mechanism 31 includes a first bite piece 311 swingably arranged on the suspension frame 1, the first bite piece 311 and the suspension A first engaging area 312 is formed between the frames 1, and the first pressing mechanism 32 includes a first pressing member 321 and a first spring 322. The two ends of the first linkage rope 311 are respectively connected to the first engaging member 311 and the first pressing member 321. One end of the first pressing member 321 presses against the second suspension segment 212, and one end of the first spring 322 presses the first pressing member 321 in a direction close to the second suspension segment 212. When the load-bearing cable 21 breaks and the second suspension segment 212 loosens, the second suspension segment 212 releases the pressure on the first pressing member 321. At this time, the first pressing member 321 drives the first engaging member 311 to swing upward to narrow the first engaging area 312, so that the first engaging member 311 continues to squeeze the first suspension segment 211 located in the first engaging area 312 to engage and lock the load-bearing cable 21. The anti-falling device for lighting lifting of this embodiment is provided with a first movable pulley 221 and a second movable pulley 222 in the suspension assembly 3, and the load-bearing cable 21 is respectively wound around the double movable pulleys to suspend the suspension frame 1. Compared with the existing single movable pulley suspension method, it is not easy to cause the suspension frame 1 to shake significantly, making the suspension of the suspension frame 1 more stable; at the same time, a first anti-falling assembly 3 is provided, which is provided with a first bite mechanism 31, a first pressing mechanism 32 and a first linkage rope 33, and the first linkage rope 33 is used to connect The first engaging member 311 is connected to the first pressing member 321. When the second suspension segment 212 of the load-bearing cable 21 breaks or becomes loose, the first pressing member 321 will be released from the state of being continuously pressed by the second suspension segment 212, thereby driving the first engaging member 311 to swing and immediately engage with the first suspension segment 211 located in the first engaging area 312. This cooperation causes the engaging force of the first engaging member 311 on the load-bearing cable 21 to increase as the load of the suspension frame 1 increases, thereby greatly improving the anti-fall effect of the device.

[0023] The first engaging member 311 is crescent-shaped, with engaging teeth 313 disposed on its curved surface. When the first suspension segment 211 is pressed against the first engaging area 312, the first suspension segment 211 rubs against the engaging teeth 313 upward in the height direction. The provision of the engaging teeth 313 increases friction between the first engaging member 311 and the load-bearing cable 21, thereby enhancing the engaging effect of the first engaging member 311.

[0024] The first engaging mechanism 31 also includes an extrusion surface 314 vertically arranged on the suspension frame 1, and each extrusion surface 314 is provided with engaging teeth 313. The first engaging area 312 is located between the extrusion surface 314 and the curved surface of the first engaging member 311. The relative engagement of the two engaging teeth 313 can further enhance the engagement effect between the first engaging member 311 and the extrusion surface 314.

[0025] One end of the first linkage rope 33 away from the first pressing member 321 passes through the first engaging member 311 to be fixed to the first engaging member 311 . This fixing method makes the first linkage rope 33 more firmly fixed on the first engaging member 311 .

[0026] The first pressing mechanism 32 also includes a sleeve 323 horizontally fixed to the suspension frame 1, a movable bracket 324 movably connected to the sleeve 323, and a pressing wheel 325 for pressing the second suspension segment 212. The pressing wheel 325 is rotatably mounted on one end of the movable bracket 324. The end of the movable bracket 324 away from the pressing wheel 325 is fixed to the end of the first linkage rope 33 away from the first engaging member 311. A first spring 322 is sleeved on the movable bracket 324 and abuts against the side of the sleeve 323 away from the pressing wheel 325. When the second suspension segment 212 of the load-bearing cable 21 is in a straightened state, it will steadily and continuously press against the pressing wheel 325. At this time, the first spring 322 is compressed within the sleeve 323. Only when the second suspension segment 212 releases its pressure on the pressing wheel 325 will the movable bracket 324 move under the elastic action of the first spring 322, thereby triggering the linkage with the first engaging member 311.

[0027] Furthermore, the anti-fall device also includes a second anti-fall component 4, which includes a second bite mechanism 41, a second pressing mechanism 42, and a second linkage rope 43. The structure of the second bite mechanism 41 is similar to that of the first bite mechanism 31, and the structure of the second pressing mechanism 42 is similar to that of the first pressing mechanism 32. The second pressing mechanism 42 is used to press the first suspension segment 211, and the second bite mechanism 41 is used to bite and lock the second suspension segment 212. The cooperation between the first anti-fall component 3 and the second anti-fall component 4 allows the anti-fall effect to be triggered regardless of whether the load-bearing cable 21 breaks or becomes loose at the first suspension segment 211 or the second suspension segment 212.

[0028] The load-bearing cable 21 forms a third suspension section 213 between the first movable pulley 221 and the second movable pulley 222. The third suspension section 213 is arranged horizontally, so that the load of the load-bearing cable 21 in the first suspension section 211 and the second suspension section 212 is more evenly distributed, thereby ensuring the service life of the load-bearing cable 21.

[0029] The suspension frame 1 is provided with a horizontally arranged upper support plate 11 and a lower support plate 12. The first anti-fall assembly 3 and the second anti-fall assembly 4 are both arranged between the upper support plate 11 and the lower support plate 12. The first suspension segment 211 and the second suspension segment 212 are both movably connected to the upper support plate 11 and the lower support plate 12. The use of the upper support plate 11 and the lower support plate 12, through which the first suspension segment 211 and the second suspension segment 212 are movably connected, can reduce the possibility of external objects scratching or interfering with the load-bearing cable 21 from the side.

[0030] A ring-shaped hook 13 is provided at the lower end of the hanging frame 1 to facilitate hanging of the lighting equipment.

[0031] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fall prevention device for lighting lifting, characterized by: It comprises a suspension frame (1), a suspension component (2) and a first anti-fall component (3) arranged on the suspension frame (1); The suspension assembly (2) includes a load-bearing cable (21) and a movable pulley group (22), wherein the movable pulley group (22) includes a first movable pulley (221) and a second movable pulley (222) rotatably arranged on the suspension frame (1), and the load-bearing cable (21) is respectively wound around the first movable pulley (221) and the second movable pulley (222) to suspend the suspension frame (1), so that the load-bearing cable (21) forms a first suspension section (211) and a second suspension section (212) arranged vertically; The first anti-fall component (3) includes a first bite mechanism (31), a first pressing mechanism (32) and a first linkage rope (33), wherein the first bite mechanism (31) includes a first bite member (311) swingably arranged on the suspension frame (1), a first bite area (312) is formed between the first bite member (311) and the suspension frame (1), the first pressing mechanism (32) includes a first pressing member (321) and a first spring (322), two ends of the first linkage rope (33) are respectively connected to the first bite member (311) and the first pressing member (321), one end of the first pressing member (321) presses against the second suspension frame (1), and the first spring (322) is connected to the first bite member (311). The first spring (322) is provided with a first pressing member (321) and a second spring (322) and a first pressing member (321) that presses against the first suspension segment (212) along a direction close to the second suspension segment (212). When the load-bearing cable (21) breaks and the second suspension segment (212) is loosened, the second suspension segment (212) releases the pressure on the first pressing member (321). At this time, the first pressing member (321) drives the first engaging member (311) to swing upward to narrow the first engaging area (312), so that the first engaging member (311) continuously presses the first suspension segment (211) located in the first engaging area (312) to engage and lock the load-bearing cable (21).

2. The anti-falling device for lighting lifting according to claim 1, characterized in that: The first engaging member (311) is arranged in a crescent shape, and an engaging tooth (313) is provided on the curved surface of the first engaging member (311). When the first suspension section (211) is squeezed into the first engaging area (312), the first suspension section (211) rubs the engaging tooth (313) upward in the height direction.

3. The anti-falling device for lighting lifting according to claim 2, characterized in that: The first engaging mechanism (31) further comprises an extrusion surface (314) vertically arranged on the suspension frame (1), the extrusion surface (314) being provided with the engaging teeth (313), and the first engaging area (312) being located between the extrusion surface (314) and the curved surface of the first engaging member (311).

4. The anti-falling device for lighting lifting according to claim 3, characterized in that: One end of the first linkage rope (33) away from the first pressing member (321) is passed through the first engaging member (311) to be fixed to the first engaging member (311).

5. The anti-falling device for lighting lifting according to claim 3, characterized in that: The first pressing mechanism (32) further comprises a sleeve (323) fixed horizontally on the suspension frame (1), a movable bracket (324) movably connected to the sleeve (323), and a pressing concave wheel (325) for pressing the second suspension section (212), wherein the pressing concave wheel (325) is rotatably arranged at one end of the movable bracket (324), and the end of the movable bracket (324) away from the pressing concave wheel (325) is fixed to the end of the first linkage rope (33) away from the first engaging member (311), and the first spring (322) is sleeved on the movable bracket (324) and abuts against the side of the sleeve (323) away from the pressing concave wheel (325).

6. The anti-falling device for lighting lifting according to claim 5, characterized in that: The invention also includes a second anti-falling component (4), which includes a second bite mechanism (41), a second pressing mechanism (42) and a second linkage rope (43). The structure of the second bite mechanism (41) is similar to that of the first bite mechanism (31), and the structure of the second pressing mechanism (42) is similar to that of the first pressing mechanism (32). The second pressing mechanism (42) is used to press the first suspension segment (211), and the second bite mechanism (41) is used to bite and lock the second suspension segment (212).

7. The anti-falling device for lighting lifting according to claim 6, characterized in that: The bearing cable (21) forms a third suspension section (213) between the first movable pulley (221) and the second movable pulley (222), and the third suspension section (213) is arranged horizontally.

8. The anti-falling device for lighting lifting according to claim 6, characterized in that: The suspension frame (1) is provided with a horizontally arranged upper support plate (11) and a lower support plate (12); the first anti-falling component (3) and the second anti-falling component (4) are both arranged between the upper support plate (11) and the lower support plate (12); the first suspension section (211) and the second suspension section (212) are both movably connected to the upper support plate (11) and the lower support plate (12).

9. The anti-falling device for lighting lifting according to claim 8, characterized in that: A ring-shaped hanging buckle (13) is provided at the lower end of the suspension frame (1).

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