Automatic uniformly-distributed stress roller carrier with multiple roller supporting points

Abstract

The invention discloses a multi-roller-supporting-point automatic uniformly-distributed stress roller carrier which comprises a supporting beam, roller sets are arranged on the two sides of the upper end face of the supporting beam respectively, the roller set on one side is composed of four rollers, every two rollers are combined on the same first bearing seat through a shaft pin, every two first bearing seats share one first shaft pin, and the roller sets are arranged on the two sides of the supporting beam respectively. A first shaft pin is arranged on the upper end face of the strut beam, a second bearing seat is arranged below the first shaft pin and used for supporting the first shaft pin, a second shaft pin is arranged below the second bearing seat, a third bearing seat is arranged below the second shaft pin, the third bearing seat is arranged on the upper end face of the strut beam through a base, the second shaft pin is perpendicular to the first shaft pin by 90 degrees, and the second bearing seat can rotate around the second shaft pin. The roller carrier has multiple roller supporting points, and the height of the supporting rollers can be adjusted; and each roller can adapt to different inclined planes of the steel wall, and the bearing force is automatically and uniformly distributed to each roller, so that the phenomenon that the pipe wall is indented or deformed and sunken due to overlarge local stress of a certain roller is avoided.

Description

Technical Field

[0001] This invention relates to a roller frame for supporting steel pipes, and more particularly to a roller frame with multiple roller support points that can automatically and evenly distribute the force among the support rollers. Background Technology

[0002] Steel pipes are widely used in marine engineering, shipbuilding, construction, power, bridge engineering, oil and gas, chemical, and machinery manufacturing industries. Because steel pipes are cylindrical, roller frames are essential in their manufacturing process. The steel pipes are securely and stably placed on the roller frames, and the roller frames allow for easy rotation during welding, grinding, painting, and other construction work. Currently, common roller frames typically have one or two rollers on one side, with a total of two or four load-bearing rollers per frame. For some heavy, thin-walled steel pipes, using such roller frames can easily lead to excessive stress on individual rollers, causing indentations or even dents on the pipe wall surface. Common solutions include increasing the number of roller frames or widening the thickness of the rollers to reduce the stress on the rollers. However, this method still has a drawback. If the steel pipes are not placed horizontally or straight, some roller frames may not make contact with the pipe wall and will not bear any force. The contact area between the roller surface and the pipe wall is small, and the contact area between the roller and the pipe wall is small at the corners of the roller. This can also lead to increased pressure at localized stress points, resulting in indentations or even deformation and dents on the pipe wall. To better solve this problem, a roller frame with multiple roller support points that automatically and evenly distributes force was invented. Summary of the Invention

[0003] The present invention provides an automatic force-distributing roller frame with multiple roller support points to solve the problems in the background art.

[0004] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0005] An automatic force-distributing roller frame with multiple roller support points includes a support beam. Roller groups are provided on both sides of the upper end face of the support beam. Each roller group on one side consists of 4 rollers. Every two rollers are connected to the same first bearing seat by a shaft pin. The two first bearing seats share a first shaft pin. A second bearing seat is provided below the first shaft pin to support the first shaft pin. A second shaft pin is provided below the second bearing seat. A third bearing seat is provided below the second shaft pin. The third bearing seat frame is mounted on the upper end face of the support beam through a base. The second shaft pin is perpendicular to the first shaft pin at 90°. The second bearing seat can rotate around the second shaft pin.

[0006] Further technology of the present invention:

[0007] Preferably, the two first bearing seats can rotate independently about the pivot pin.

[0008] Preferably, the third bearing seat is provided with a third shaft pin and a fourth shaft pin at both ends. The third bearing seat and the base are hinged by the fourth shaft pin. The third bearing seat can rotate around the fourth shaft pin. The third shaft pin is provided with a bushing. The base is provided with a hydraulic cylinder. The bushing is connected to the hydraulic cylinder push rod. The lifting and lowering of the third bearing seat can be realized by the extension and retraction of the hydraulic cylinder push rod.

[0009] Preferably, the upper end face of the support beam is provided with several mounting holes, and the base is provided with bolts that can be inserted into the mounting holes to connect with the support beam. The relative spacing between the two bases can be adjusted left and right on the support beam.

[0010] Preferably, rollers are provided below the support beam.

[0011] The beneficial effects of this invention are:

[0012] The roller frame of this invention has 4 rollers on one side, and a set of roller frames has a total of 8 rollers. The rollers have multiple support points, and the height of the support rollers can be adjusted. Moreover, each roller can adapt to different inclined surfaces of the steel wall, automatically distributing the bearing pressure evenly to each roller, avoiding excessive local stress on a certain roller, which could cause indentations or deformation of the pipe wall. This roller frame can be used to support straight pipes or pipes with different diameters, and is not affected by the inclined contact surface of the pipe or pipe. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of a multi-roller support point automatic uniform force-bearing roller frame provided by the present invention.

[0015] Figure 2 A schematic diagram of the first bearing housing structure provided by the present invention.

[0016] Figure 3 This is a schematic diagram of the second bearing housing structure provided by the present invention.

[0017] Figure 4 A schematic diagram of the third bearing housing structure provided by the present invention.

[0018] Figure 5 This is a schematic diagram of the base structure provided by the present invention.

[0019] In the diagram: 1. Support beam; 2. Roller; 3. First axle pin; 4. First bearing housing; 5. Second axle pin; 6. Second bearing housing; 7. Third axle pin; 8. Third bearing housing; 9. Third axle pin; 10. Fourth axle pin; 11. Bushing; 12. Hydraulic cylinder; 13. Base; 14. Mounting hole; 15. Bolt; 16. Roller. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0021] like Figure 1-5 This embodiment provides an automatic force-distributing roller frame with multiple roller support points, including a support beam 1, with rollers 2 provided below the support beam 1.

[0022] Both sides of the upper end face of the support beam 1 are provided with roller groups, each side consisting of 4 rollers. Each pair of rollers is assembled on a first bearing seat 4 using a first axle pin 3. The two first bearing seats 4 share a second axle pin 5, and the two first bearing seats 4 can rotate independently around the second axle pin 5. A second bearing seat 6 is provided below the second axle pin 5 to support the second axle pin 5. A third axle pin 97 is provided below the second bearing seat 6, and the third axle pin 97 is perpendicular to the second axle pin 5 at 90°. The second bearing seat 6 can rotate around the third axle pin 97. A third bearing seat 8 is provided below the third axle pin 97, and a fourth axle pin 10 is provided at both ends of the third bearing seat 8. A base 13 is provided below the third bearing seat 8, and the third bearing seat 8 and the base 13 are hinged by the fourth axle pin 10. The third bearing seat 8 can rotate around the fourth axle pin 10.

[0023] The third shaft pin 97 is provided with a bushing 11, which is connected to the push rod of the hydraulic cylinder 12. The lifting and lowering of the third bearing seat 8 can be achieved by extending and retracting the push rod of the hydraulic cylinder 12.

[0024] Because it has multiple rotatable pivot pins, each roller can automatically distribute the force evenly when supporting different inclined surfaces.

[0025] When the steel pipe is placed on the roller frame, the rollers automatically distribute the force evenly on the pipe wall at the four rollers under different conditions as follows:

[0026] Looking at the first bearing seat 4 alone: ​​It should be noted that the two first bearing seats 4 can rotate independently around the first shaft pin 3. When the two rollers on the first bearing seat 4 are not level, if one roller contacts the pipe wall first, it will be stressed first. Since the first bearing seat 4 can rotate around the second shaft pin 5, the pipe wall pushes one roller down, and the other roller will move up until neither roller can push the other. The two rollers will be stressed at the same time and eventually the forces will be equal.

[0027] Considering the two first bearing seats 4 together: It should be noted that the two first bearing seats 4 can rotate independently around the first shaft pin 3. When the two first bearing seats 4 are not level, if the roller on one first bearing seat 4 contacts the pipe wall first, it will be subjected to force first. Since the second bearing seat 6 can rotate around the third shaft pin 97, the pipe wall pushes this first bearing seat 4 downward. At this time, the other first bearing seat 4 will move upward until neither bearing seat can push the other. The two bearing seats are subjected to force at the same time and will eventually be subjected to equal force.

[0028] The lifting and lowering of the third bearing seat 8 can be achieved by extending and retracting the push rod of the hydraulic cylinder 12, thereby realizing the lifting and lowering of the entire support roller.

[0029] The two bases 13 can be adjusted left and right on the support beam 1 to adjust their relative spacing, making them suitable for supporting steel pipes of different diameters.

[0030] Furthermore, the upper end face of the support beam 1 is provided with several mounting holes 14, and the base 13 is provided with bolts 15 that are inserted into the mounting holes 14 to connect with the support beam 1. The two bases 13 can be adjusted left and right on the support beam 1 to adjust their relative spacing, which is suitable for supporting steel pipes of different diameters.

[0031] In this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0032] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0033] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the structure of the invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

Claims

1. A multi-roller support point automatically evenly distributed force-bearing roller frame, characterized in that, The support beam includes roller sets on both sides of its upper end face. Each roller set on one side consists of four rollers, with every two rollers connected to the same first bearing seat by a pin. The two first bearing seats share a first pin. A second bearing seat is located below the first pin to support it. A second pin is located below the second bearing seat. A third bearing seat is located below the second pin. The third bearing seat is mounted on the upper end face of the support beam via a base. The second pin is perpendicular to the first pin at a 90° angle, and the second bearing seat can rotate around the second pin.

2. The multi-roller support point automatic uniform force-bearing roller frame according to claim 1, characterized in that, The two first bearing housings can rotate independently around the pivot pin.

3. The multi-roller support point automatic uniform force-bearing roller frame according to claim 1, characterized in that, The third bearing seat is provided with a third shaft pin and a fourth shaft pin at both ends. The third bearing seat and the base are hinged by the fourth shaft pin. The third bearing seat can rotate around the fourth shaft pin. The third shaft pin is provided with a bushing. The base is provided with a hydraulic cylinder. The bushing is connected to the hydraulic cylinder push rod. The lifting and lowering of the third bearing seat can be realized by the extension and retraction of the hydraulic cylinder push rod.

4. The multi-roller support point automatic uniform force-bearing roller frame according to claim 1, characterized in that, The upper end face of the support beam is provided with several mounting holes, and the base is provided with bolts that can be inserted into the mounting holes to connect with the support beam. The relative spacing between the two bases can be adjusted left and right on the support beam.

5. The multi-roller support point automatic uniform force-bearing roller frame according to claim 1, characterized in that, Rollers are provided below the support beam.

Images