Anti-falling roller strip device

Abstract

The utility model belongs to the technical field of conveying devices, and particularly relates to an anti-falling roller strip device. Comprising a U-shaped sheet metal part, open mounting holes are symmetrically machined in the two side walls of the U-shaped sheet metal part, roller bolts and roller nuts are arranged on the mounting holes, and rollers are rotationally arranged on the roller bolts. The roller bolt comprises a bolt cap, a smooth body and a bolt body which are integrally formed, the roller is rotationally arranged on the smooth body, and the bolt body is in threaded connection with the roller nut. Spring washers are arranged on the contact side surfaces of the roller bolts and the roller nuts with the rollers. The mounting holes with the openings of the U-shaped sheet metal part are matched with the flat-milled flanges of the roller bolt and the roller nut, and in the using process, the flat surfaces of the roller bolt and the roller nut are almost impossible to be parallel to the opening directions of the mounting holes of the U-shaped sheet metal part at the same time, so that the risk that the roller falls off is greatly reduced; and the spring washer is arranged, so that the roller bolt and the roller nut are prevented from rotating and moving randomly.

Description

Technical Field

[0001] The utility model belongs to the technical field of conveying devices, and particularly relates to an anti-drop roller bar device. Background Art

[0002] In a production line, it is often necessary to push (or pull) a product from the previous station to the next station. In order to avoid sliding friction between the product and the carrier, rollers need to be installed on the carrier.

[0003] In order to prevent the rollers from falling off, at present, a stepped shaft, a shaft sleeve, and fastening bolts are mainly used to install the rollers between U-shaped sheet metal parts to form a roller bar. Then, multiple roller bars are installed on the carrier frame. This method makes the design structure modular, but due to the large number of installation parts of the roller bar, the processing and installation processes are complex, which increases the cost of each roller bar.

[0004] For a simple roller bar, after fixing the rollers with roller bolts and roller nuts, the roller bolts and roller nuts are placed in a pre-processed U-shaped groove of a U-shaped sheet metal part. However, when there is vibration, turning, or interference from other external factors, the rollers in the groove will fall off, affecting the normal use of the roller bar. Summary of the Invention

[0005] The purpose of the utility model is to provide an anti-drop roller bar device, which can overcome the above-mentioned deficiencies of the prior art. By using the open mounting holes on the U-shaped sheet metal part to cooperate with the milled-flat flanges of the roller bolts and roller nuts, during use, it is almost impossible for the flat surfaces of the roller bolts and roller nuts to be parallel to the opening direction of the mounting holes on the U-shaped sheet metal part at the same time. Thus, the risk of roller detachment is greatly reduced; a spring washer is provided to prevent the random rotation and displacement of the roller bolts and roller nuts.

[0006] In order to achieve the above technical effects, the technical solutions adopted by the utility model are as follows:

[0007] An anti-drop roller bar device includes: a U-shaped sheet metal part, the two side walls of the U-shaped sheet metal part are symmetrically processed with open mounting holes, a roller bolt and a roller nut are arranged on the mounting holes, and a roller is rotatably arranged on the roller bolt.

[0008] Preferably, the roller bolt includes an integrally formed bolt head, a smooth body, and a bolt body, the roller is rotatably arranged on the smooth body, and the bolt body is threadedly connected with the roller nut.

[0009] Preferably, both the roller bolt and the roller nut are processed with flanges with flange grooves.

[0010] Preferably, spring washers are arranged on the contact sides of the roller bolt and the roller nut with the roller.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] 1. In this new type, the mounting holes with openings on the U-shaped sheet metal part are matched with the flattened flanges of the roller bolts and roller nuts. During use, it is almost impossible for the flattened surfaces of the roller bolts and roller nuts to be parallel to the opening direction of the mounting holes of the U-shaped sheet metal part at the same time. Thus, the risk of the roller falling off is greatly reduced;

[0013] 2. This new type is provided with spring washers to prevent the random rotation and displacement of the roller bolts and roller nuts.

[0014] Therefore, the present utility model can not only reduce the number of parts and save costs, but also effectively prevent the roller from falling off and the random rotation and displacement of the roller bolts and roller nuts. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model, and do not constitute a limitation to the present utility model.

[0016] In the drawings:

[0017] Figure 1 is the front view structure diagram of the anti-drop roller bar device of the present utility model;

[0018] Figure 2 is the inverted view structure diagram of the anti-drop roller bar device of the present utility model;

[0019] Figure 3 is the main sectional view of the anti-drop roller bar device of the present utility model;

[0020] Figure 4 is the structure diagram of the U-shaped sheet metal part of the present utility model;

[0021] Figure 5 is the structure diagram of the present utility model without the U-shaped sheet metal part;

[0022] Figure 6 is the structure diagram of the roller bolt of the present utility model;

[0023] Figure 7 is the structure diagram of the roller nut of the present utility model;

[0024] Figure 8 is the structure diagram of the roller of the present utility model;

[0025] Figure 9 is the structure diagram of the spring washer of the present utility model;

[0026] Figure 10It is the parameter diagram of the present utility model;

[0027] Among them, 1. Roller bolt, 101. Bolt cap, 102. Smooth body, 103. Bolt body, 2. Spring washer, 3. Roller, 4. Roller nut, 5. U-shaped sheet metal part, 501. Mounting hole, 502. Through hole, 6. Flange, 601. Flange groove. Specific implementation manner

[0028] The preferred embodiments of the present utility model will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present utility model, and are not used to limit the present utility model.

[0029] Embodiment:

[0030] Refer to the attached Figure 1-9 , an anti-dropping roller bar device, comprising: a U-shaped sheet metal part 5, and the U-shaped sheet metal part 5 can be processed into a U shape by blanking, bending or welding. The material can be selected from stainless steel, carbon steel or aluminum alloy. Preferably, the stainless steel material and the bending processing technology are adopted, which have better corrosion resistance and are simple and convenient to process.

[0031] φ mounting holes 501 are symmetrically processed on both side walls of the U-shaped sheet metal part 5. An opening with a width of t (t < φ) that is symmetric about the center line of the mounting hole is processed on the mounting hole 501; a through hole 502 is also drilled on the U-shaped sheet metal part 5.

[0032] The roller bolt 1 includes an integrally formed bolt cap 101, a smooth body 102 and a bolt body 103. The roller 3 is a smooth rod body. External threads are provided on the outer surface of the bolt body 103, and internal threads are provided on the roller nut 4. Therefore, the roller 3 is rotatably arranged on the smooth body 102, and the bolt body 103 is threadedly connected to the roller nut 4.

[0033] Flanges 6 with flange grooves 601 are processed on both the roller bolt 1 and the roller nut 4. The diameter of the flange groove is also φ. The outer end wall of the flange together with the flange groove 601 is milled into a flat shape with a size of t. Therefore, when the roller bolt 1 and the roller nut 4 are installed on the mounting hole 501, when the roller bolt 1 and the roller nut 4 completely flatten the spring washer 2, the inner edge spacing of the flange grooves of the roller bolt 1 and the roller nut 4 is smaller than the inner edge spacing of the side wall of the U-shaped sheet metal part 5 by δ, and δ is about 0.6 - 1.0 times the pitch. M in the figure is the thread size. Spring washers 2 are provided on the contact sides of the roller bolt 1 and the roller nut 4 with the roller 3.

[0034] During installation, first use a wrench to clamp the ends of the roller bolt 1 and the roller nut 4, and tighten the roller bolt 1 and the roller nut 4 so that the spring washer 2 presses the roller 3 until it is completely flattened; then start to loosen the roller bolt 1 and the roller nut 4 until the milled flat surfaces thereof are parallel for the first time; then, insert the flange grooves of the roller bolt 1 and the roller nut 4 into the open mounting holes of the C-shaped sheet metal part 5; finally, further loosen the roller bolt 1 and the roller nut 4 so that the inner edges of the flange grooves of the roller bolt 1 and the roller nut 4 are in close contact with the inner edges of the side walls of the C-shaped sheet metal part 5.

[0035] During use, due to the action of the spring washer 2 and the frictional force of the inner edges of the side walls of the C-shaped sheet metal part 5, the roller bolt 1 and the roller nut 4 cannot rotate or move around; and it is almost impossible for the flat surfaces of the roller bolt 1 and the roller nut 4 to be parallel to the opening direction of the mounting holes of the C-shaped sheet metal part 5 at the same time, thus, the roller will not fall off.

[0036] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An anti - shedding roller bar device, characterized in that: Including: A U-shaped sheet metal part (5), the two side walls of the U-shaped sheet metal part (5) are symmetrically provided with open mounting holes (501), a roller bolt (1) and a roller nut (4) are arranged on the mounting holes (501), and a roller (3) is rotatably arranged on the roller bolt (1); On the roller bolt (1), the roller (3) is rotatably arranged on a smooth body (102), and a bolt body (103) is in threaded connection with the roller nut (4); Flanges (6) with flange grooves (601) are machined on both the roller bolt (1) and the roller nut (4); Spring washers (2) are arranged on the contact side surfaces of the roller bolt (1) and the roller nut (4) and the roller (3).

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