Reel for testing door rolling machine

Abstract

The utility model discloses a reel for testing a door rolling machine in the field of test devices. The reel comprises a connecting shaft; the reducing structures are arranged at the two ends of the connecting shaft, and load lifting ropes are wound on the reducing structures; the mounting shaft is arranged on the outer sides of the two reducing structures, and the two ends of the mounting shaft are rotationally connected to the testing frame respectively; the utility model has the beneficial effects that the two sides of the connecting shaft are connected with the reducing structure with the large reel, the middle reel and the small reel, so that the reducing test of the door rolling machine can be realized by one shaft, the manpower and material resources for replacing the shaft are saved, and the manufacturing cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment, specifically to a roller for testing rolling door machines. Background Technology

[0002] According to the national standard GB 14102.2-2024 "Fireproof Rolling Shutters - Part 2: Rolling Door Motors for Fireproof Rolling Shutters", the new standard specifies different requirements for the diameter of the roller shaft in the test device for different rated output torques of the rolling door motors (the old standard did not have a clear requirement for the roller shaft diameter). Therefore, this technical innovation is proposed to adapt to the requirements of the new standard.

[0003] The new standard specifies the following requirements for the diameter of the roll in the testing apparatus:

[0004] When the rated output torque T of the rolling door motor is less than or equal to 90 N·m, the diameter of the roller shaft is 165 mm.

[0005] When the rated output torque of the rolling door motor is 90 N·m ≤ T ≤ 150 N·m, the roller diameter is 220 mm;

[0006] When the rated output torque T of the rolling door motor is greater than 150 N·m, the diameter of the roller is 300 mm.

[0007] The existing testing method involves rotating a roller connected to a test frame, winding a steel wire rope around the roller, fixing a weight to the bottom of the steel wire rope to provide load, and starting the roller motor to rotate the roller and lift the weight to test the roller motor's performance. However, to use the existing testing equipment to test the new standard, it is necessary to change to rollers of different diameters and increase the number of rollers, which has the following inconveniences:

[0008] The scroll itself is quite heavy, and replacing it requires a significant amount of manpower and resources.

[0009] The process of changing the reel is extremely cumbersome, time-consuming, and labor-intensive.

[0010] Increasing the number of reels will change the structure of the entire test apparatus, increasing the footprint and complicating the apparatus, and is not advantageous in terms of economy or reliability.

[0011] Therefore, we propose a roller for testing rolling door motors. Summary of the Invention

[0012] To address the aforementioned shortcomings of the existing technology, this utility model provides a roller for testing rolling door motors.

[0013] To achieve the above-mentioned objectives, the technical solution adopted by this utility model is as follows:

[0014] A roller for testing rolling door motors, comprising:

[0015] Connecting shaft;

[0016] A variable diameter structure is located at both ends of the connecting shaft. A load lifting rope is wound around the variable diameter structure. The variable diameter structure is used to provide different winding diameters for the load lifting rope.

[0017] The mounting shaft is located on the outside of the two variable diameter structures, and both ends of the mounting shaft are rotatably connected to the test frame.

[0018] By setting variable diameter structures on both sides of the connecting shaft, when different reel diameters are required for testing, it is only necessary to lower the load suspension rope wound on the corresponding diameter of the variable diameter structure, connect the weight for testing, avoid the step of changing the reel, save manpower and resources for changing the reel, save economic expenses caused by excess reels, and reduce manufacturing costs.

[0019] Further defining the variable diameter structure, it includes a large reel, a medium reel, and a small reel; the large reel, medium reel, and small reel are fixedly connected in sequence, with the winding diameter of the large reel being larger than that of the medium reel, and the winding diameter of the medium reel being larger than that of the small reel; setting the variable diameter structure as a large reel, medium reel, and small reel corresponds to the requirements of existing rolling door machine test standards, improving the device's compliance with test standards and making the test easier to conduct.

[0020] Further specifying, the mounting shaft is fixedly connected to the outside of the large reel, and the connecting shaft is connected to the outside of the small reel.

[0021] Further specified, connecting rings are provided around both ends of the connecting shaft and the inner end of the mounting shaft. Side plates are provided on both sides of the large, medium, and small reels. Mounting holes are provided on the inner side plate of the small reel and the outer side plate of the large reel. Fixing holes are provided on the connecting rings corresponding to the mounting holes. The connecting shaft and mounting shaft are fixedly connected to the side plates by bolts passing through the fixing holes and mounting holes. The diameter changing mechanism is more securely fixed by the flange-like structure of the side plates, connecting shaft, and mounting shaft.

[0022] Further, each of the large, medium, and small reels has a rope hole on its side panel, and the end of the load rope is fixedly locked in the rope hole; by opening a rope hole on the side panel and locking the end of the load rope in the rope hole, the connection is more secure and can be disassembled compared to welding.

[0023] Furthermore, the large, medium, and small reels are molded as a single piece; this single-piece molding makes the variable diameter structure more stable.

[0024] Further, the side plate is provided with a wire hole, which is staggered with the mounting hole; the wire hole allows the free end of the unused load rope to be threaded through it, preventing the unused load rope from automatically retracting and unwinding, thus preventing it from getting tangled.

[0025] The beneficial effects of this utility model are as follows: by connecting a variable diameter structure with a large reel, a medium reel, and a small reel on both sides of the connecting shaft, a single shaft can realize the variable diameter test of the rolling door machine, saving manpower and material resources for shaft replacement and reducing manufacturing costs. Attached Figure Description

[0026] Figure 1 This is a front view of the present invention;

[0027] Figure 2 This is a schematic diagram of the outer side plate of the variable diameter structure.

[0028] The symbols for each component are as follows:

[0029] Connecting shaft 1, variable diameter structure 2, small reel 21, medium reel 22, large reel 23, side plate 24, mounting hole 241, lifting rope hole 242, wire threading hole 243, mounting shaft 3, load lifting rope 4. Detailed Implementation

[0030] The specific embodiments of this utility model are described below to enable those skilled in the art to understand this utility model. However, it should be understood that this utility model is not limited to the scope of the specific embodiments. For those skilled in the art, as long as various changes are within the spirit and scope of this utility model as defined and determined by the appended claims, these changes are obvious. All utility model creations utilizing the concept of this utility model are within the scope of protection.

[0031] Example:

[0032] like Figure 1 and Figure 2As shown, a roller for testing a rolling door machine includes a connecting shaft 1, a diameter-changing structure 2, and a mounting shaft 3. The diameter-changing structure 2 is located at both ends of the connecting shaft 1 and is used to provide different winding diameters for the load-bearing rope 4. The diameter-changing structure 2 includes a large reel 23, a medium reel 22, and a small reel 21, with the load-bearing rope 4 wound on each of the three reels. The large reel 23, medium reel 22, and small reel 21 are sequentially and fixedly connected. The winding diameter of the large reel 23 is larger than that of the medium reel 22, and the winding diameter of the medium reel 22 is larger than that of the small reel 21. The large reel 23, medium reel 22, and small reel 21 are integrally formed. The mounting shaft 3 is located on the outside of the two diameter-changing structures 2, and both ends of the mounting shaft 3 are rotatably connected to the test frame. The mounting shaft 3 is fixedly connected to... On the outside of the large reel 23, the connecting shaft 1 is connected to the outside of the small reel 21; both ends of the connecting shaft 1 and the inner end of the mounting shaft 3 are respectively provided with connecting rings. Side plates 24 are provided on both sides of the large reel 23, the medium reel 22 and the small reel 21. Mounting holes 241 are provided on the side plate 24 on the inside of the small reel 21 and the side plate 24 on the outside of the large reel 23. Fixing holes are provided on the connecting rings corresponding to the mounting holes 241. The connecting shaft 1 and the mounting shaft 3 are fixedly connected to the side plate 24 by bolts passing through the fixing holes and the mounting holes 241. A rope hole 242 is provided on any side plate 24 of the large reel 23, the medium reel 22 and the small reel 21. The end of the load rope 4 is fixedly locked in the rope hole 242. A wire hole 243 is provided on the side plate 24. The wire hole 243 and the mounting hole 241 are staggered.

[0033] By setting variable diameter structures 2 on both sides of the connecting shaft 1, when different roller diameters are required for testing, it is only necessary to lower the load suspension rope 4 wound on the corresponding diameter of the variable diameter structure 2, connect the weight for testing, and avoid the step of replacing the roller, saving manpower and resources for roller replacement, and saving economic expenses caused by excess rollers, thus reducing manufacturing costs; setting the variable diameter structure 2 as a large roller 23, a medium roller 22, and a small roller 21 corresponds to the requirements of existing roller door motor testing standards, improving the device's compliance with testing standards, and further... The variable diameter mechanism is connected and fixed more securely through the side plate 24, connecting shaft 1, and mounting shaft 3, similar to a flange structure. By opening a rope hole 242 on the side plate 24, the end of the load rope 4 is locked in the rope hole 242, making the connection more secure and allowing for disassembly compared to welding. The one-piece molding makes the variable diameter structure 2 more stable. The wire hole 243 allows the free end of the currently unused load rope 4 to be threaded through the wire hole 243, preventing the unused load rope 4 from automatically retracting and unwinding, causing knots.

Claims

1. A roller for testing rolling door motors, characterized in that, include: Connecting shaft (1); A variable diameter structure (2) is provided at both ends of the connecting shaft (1). A load-bearing rope (4) is wound on the variable diameter structure (2). The variable diameter structure (2) is used to provide different winding diameters for the load-bearing rope (4). Mounting shaft (3) is located on the outside of the two variable diameter structures (2), and the two ends of the mounting shaft (3) are rotatably connected to the test frame respectively; The variable diameter structure (2) includes a large reel (23), a medium reel (22), and a small reel (21); the large reel (23), the medium reel (22), and the small reel (21) are fixedly connected in sequence, the winding diameter of the large reel (23) is greater than the winding diameter of the medium reel (22), and the winding diameter of the medium reel (22) is greater than the winding diameter of the small reel (21).

2. The roller for testing rolling door motors according to claim 1, characterized in that, The mounting shaft (3) is fixedly connected to the outside of the large reel (23), and the connecting shaft (1) is connected to the outside of the small reel (21).

3. The roller for testing rolling door motors according to claim 2, characterized in that, Both ends of the connecting shaft (1) and the inner end of the mounting shaft (3) are respectively provided with connecting rings. The large reel (23), the medium reel (22) and the small reel (21) are provided with side plates (24) on both sides. The side plate (24) on the inner side of the small reel (21) and the side plate (24) on the outer side of the large reel (23) are provided with mounting holes (241). The connecting ring is provided with fixing holes corresponding to the mounting holes (241). The connecting shaft (1) and the mounting shaft (3) are fixedly connected to the side plate (24) by bolts passing through the fixing holes and the mounting holes (241).

4. The roller for testing a rolling door motor according to claim 3, characterized in that, A rope hole (242) is provided on any of the side plates (24) of the large reel (23), medium reel (22) and small reel (21), and the end of the load rope (4) is fixedly locked in the rope hole (242).

5. The roller for testing rolling door motors according to claim 4, characterized in that, The large reel (23), medium reel (22) and small reel (21) are integrally formed.

6. The roller for testing rolling door motors according to claim 3, characterized in that, The side plate (24) is provided with a wire hole (243), and the wire hole (243) and the mounting hole (241) are misaligned.

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