Adjustable roller carrier

Abstract

The utility model discloses an adjustable roller carrier which comprises a machine frame, a first roller is installed at one end of the machine frame, second rollers are symmetrically installed at the other end of the machine frame, and a pair of movable supporting rollers is arranged between the first roller and the second rollers. When the supporting rollers move, machining stations of the steel pipe workpieces are formed between the supporting rollers and the first rollers and between the supporting rollers and the second rollers. The pair of supporting rollers is additionally arranged between the first roller and the second roller of the large roller carrier, and the distance between the supporting rollers and the first roller and the distance between the supporting rollers and the second roller are adjusted according to the diameter of a steel pipe, so that the large roller carrier can be suitable for machining workpieces with different diameters and is high in universality, and the equipment investment cost is reduced; the structure is simple and reliable, two workpieces of the same or different specifications can be machined at the same time, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of welding roller frames, in particular to an adjustable roller frame. Background Art

[0002] Wind power generation is the fastest-growing green energy technology in the world. While the construction of onshore wind farms is developing rapidly, people have noticed some limitations in the utilization of onshore wind energy, such as large land occupation, noise pollution, etc. Offshore wind power (i.e., offshore wind power generation), due to its rich resources, stable wind speed, and less negative impact on the environment; the wind turbines of offshore wind power are far from the coast, with little noise and visual interference; and offshore wind turbines not only have a large single-unit capacity and high annual utilization hours; but also do not occupy land resources. Therefore, in recent years, it has developed rapidly. The fixation of offshore wind turbines requires a specially designed foundation structure, which is the wind power jacket. The wind power jacket is a space truss composed of hollow leg columns (conduits) and horizontal and vertical rod systems connecting the leg columns. A large number of small-diameter steel pipes (730mm ≤ Φ ≤ 2300mm) in the main structure of the jacket need to be welded with circumferential seams, sandblasted, and painted. For large roller frames such as Figure 1 shown, the diameter range of the workpieces processed by the existing roller frame is 2000mm ≤ Φ ≤ 10000mm, and the distance between the two rollers is large. Although the distance between the two rollers can be adjusted, the minimum distance between the two rollers does not meet the welding requirements of steel pipes with a diameter of Φ ≤ 2000mm. The steel pipes of the jacket cannot be welded with circumferential seams and painted on the large roller frame, and a small roller frame is required to be used, which is not flexible and convenient. Preparing multiple types of roller frames not only wastes resources but also occupies site space. Content of the Utility Model

[0003] The purpose of the utility model is to provide an adjustable roller frame to solve the problems put forward in the above background art.

[0004] To achieve the above purpose, the utility model provides the following technical solution: an adjustable roller frame, including a frame. A first roller is installed at one end of the frame, and second rollers are symmetrically installed at the other end. A pair of movable support rollers are arranged between the first roller and the second rollers. When the support rollers move, processing stations for steel pipe workpieces are respectively formed between the support rollers and the first roller and the second rollers.

[0005] Further, a support roller frame is arranged on the frame, and the support rollers are respectively installed on the support roller frame through bearings by their respective axles.

[0006] Further, adjustment screw holes are opened along the length direction of the frame on the frame, and the first roller, the second rollers, and the support rollers are respectively locked to the adjustment screw holes through bolts.

[0007] Further, a first guide rail and a second guide rail are provided on the frame. A first slider and a second slider driven to slide by a first driving mechanism and a second driving mechanism are respectively arranged on the first guide rail and the second guide rail, and the first slider and the second slider are respectively connected to the support rollers.

[0008] Further, a first guide shaft and a second guide shaft are respectively arranged in the first guide rail and the second guide rail, and the first slider and the second slider are respectively sleeved on the first guide shaft and the second guide shaft.

[0009] Further, a roller frame is arranged on the frame, and the first roller and the second roller are installed on the roller frame by bearings through their respective axles.

[0010] Further, one ends of the first roller and the second roller are both connected to a driving mechanism.

[0011] Further, the driving mechanism includes a speed reducer and a motor. The output end of the speed reducer is connected to the first roller and the second roller through their respective axles, and the input end of the speed reducer is connected to the motor.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows: A pair of support rollers are added between the first roller and the second roller of the large roller frame of the present utility model, and the distance between the support rollers and the first roller and the second roller is adjusted according to the diameter of the steel pipe, so that the large roller frame can not only be applicable to the processing of workpieces with different diameters, has strong versatility, reduces the equipment investment cost, has a simple and reliable structure, but also can process two workpieces with the same or different specifications simultaneously, improving the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the large roller frame in the background art;

[0014] Figure 2 is a schematic structural diagram of the adjustable roller frame of the present utility model;

[0015] Figure 3 is a schematic structural diagram of the frame in the adjustable roller frame of the second specific embodiment of the present utility model;

[0016] In the figure, 100 - frame, 101 - adjusting screw hole, 102 - first guide rail, 103 - second guide rail, 104 - first slider, 105 - second slider, 106 - first guide shaft, 107 - second guide shaft, 1 - first roller, 2 - second roller, 3 - roller frame, 4 - driving mechanism, 41 - speed reducer, 42 - motor, 5, 6 - support rollers, 7 - support roller frame. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0018] A certain company's existing large roller stands are of two types, 300 tons and 700 tons. The wheelbase of the two rollers is 4200 mm, which is much larger than the diameter of the steel pipes currently produced and cannot meet the production requirements. It is necessary to transform the existing large roller stands, such as Figures 1 to 2 As shown, this embodiment provides an adjustable roller stand, including a frame 100. One end of the frame 100 is installed with a first roller 1, and the other end is symmetrically installed with a second roller 2. A roller stand 3 is arranged on the frame 100. The first roller 1 and the second roller 2 are installed on the roller stand 3 by their respective axles through bearings. One end of each of the first roller 1 and the second roller 2 is connected to a driving mechanism 4. The driving mechanism 4 includes a speed reducer 41 and a motor 42. The output end of the speed reducer 41 is connected to the respective axles of the first roller 1 and the second roller 2, and the input end of the speed reducer 41 is connected to the motor 42. A pair of movable support rollers (5, 6) are arranged between the first roller 1 and the second roller 2. When the support rollers (5, 6) move, a processing station for the steel pipe workpiece is formed between the support rollers (5, 6) and the first roller 1 and the second roller 2 respectively. A support roller stand 7 is arranged on the frame 100. The support rollers (5, 6) are installed on the support roller stand 7 by their respective axles through bearings. Specific Embodiment 1:

[0020] Adjusting screw holes 101 are opened on the frame 100 along the length direction of the frame 100. The first roller 1, the second roller 2, and the support rollers (5, 6) are respectively locked to the adjusting screw holes 101 by bolts. In this embodiment, through holes are also respectively opened on the roller stand 3 and the support roller stand 7, and the bolts pass through the adjusting screw holes 101 and the through holes respectively to lock the roller stand 3 and the support roller stand 7 on the frame 100.

[0021] In use, adjust the distance between the support rollers (5, 6) and the first roller 1 and the second roller 2 according to the diameter of the steel pipe, so that the first steel pipe is tangent to the first roller 1 and the support roller 5 respectively, and the second steel pipe is tangent to the second roller 2 and the support roller 6 respectively. When adjusting, adjust the position of the support roller 5 on the frame 100 according to the diameter of the steel pipe to adjust the distance between the support rollers (5, 6) and the first roller 1 and the second roller 2. After adjustment, lock the support roller frame 7 with bolts, place the steel pipe into the processing station formed by the support rollers (5, 6) and the first roller 1 and the second roller 2, and drive the first roller 1 and the second roller 2 to roll by the motor, thereby driving the support roller 5 and the support roller 6 to roll, and welding the circumferential seam and painting the steel pipe. Specific Embodiment Two:

[0023] To facilitate the adjustment of the distance between the support rollers (5, 6) and the first roller 1 and the second roller 2, as Figure 3 shown, the frame 100 is provided with a first guide rail 102 and a second guide rail 103. The first guide rail 102 and the second guide rail 103 are respectively provided with a first slider 104 and a second slider 105 that are driven to slide by a first driving mechanism and a second driving mechanism. The first driving mechanism and the second driving mechanism both adopt driving motors. The first slider 104 and the second slider 105 are respectively connected to the support rollers (5, 6). To make the first slider 104 and the second slider 105 deviate during sliding, a first guide shaft 106 and a second guide shaft 107 are respectively arranged in the first guide rail 102 and the second guide rail 103. The first slider 104 and the second slider 105 are respectively sleeved on the first guide shaft 106 and the second guide shaft 107.

[0024] In use, first measure the diameter of the steel pipe, adjust the distance between the support rollers (5, 6) and the first roller 1 and the second roller 2 according to the diameter of the steel pipe, so that the first steel pipe is tangent to the first roller 1 and the support roller 5 respectively, and the second steel pipe is tangent to the second roller 2 and the support roller 6 respectively. When adjusting, set the number of rotation turns of the motor shaft of the driving motor according to the diameter of the steel pipe. The driving motor drives the first slider 104 and the second slider 105 to slide in the first guide rail 102 and the second guide rail 103 respectively, thereby driving the support roller 5 and the support roller 6 to move, so as to adjust the distance between the support rollers (5, 6) and the first roller 1 and the second roller 2. After adjustment, place the steel pipe into the processing station formed by the support rollers (5, 6) and the first roller 1 and the second roller 2, and drive the first roller 1 and the second roller 2 to roll by the motor, thereby driving the support roller 5 and the support roller 6 to roll, and welding the circumferential seam and painting the steel pipe.

[0025] During the transformation, there are stocks of support rollers and axles. Only by manufacturing the corresponding number of support roller frames can the transformation of the roller frames be satisfied. Currently, three 700-ton and four 300-ton roller frames have been transformed for the production and manufacturing of jacket structures. One set of 700-ton / 300-ton roller frame consists of one driving roller and one driven roller. A total of 4 supports are installed on one set of roller frames. The single support weight of three sets of 700-ton roller frames is 231.71 Kg, and 12 in total are 2780.52 Kg. The single support weight of three sets of 300-ton roller frames is 157.5 Kg, and 16 in total are 2520 Kg. Three sets of 700-ton and four sets of 300-ton roller frames can satisfy the simultaneous welding or sandblasting and painting of 14 steel pipe circumferential seams. If new small roller frame equipment is added to ensure the simultaneous welding or sandblasting and painting of 14 steel pipes, a total of 14 sets are required. Through market research, the current price of a single set of small roller frames is about 110,000 yuan, totaling 1.54 million yuan. The net weight of the steel plate sheets required for the transformation is 5300.52 Kg. Combining the raw material cost, labor cost, and material loss, the cost is approximately 8000 yuan / ton, totaling about 42,400 yuan; the saved amount is 1.54 million yuan - 42,400 yuan ≈ 1.4976 million yuan.

[0026] A pair of support rollers is added between the first roller and the second roller of the large roller frame of the present utility model. The distance between the support roller and the first roller and the second roller is adjusted according to the diameter of the steel pipe, so that the large roller frame can not only be applicable to the processing of workpieces with different diameters, has strong versatility, reduces the equipment investment cost, has a simple and reliable structure, but also can process two workpieces of the same or different specifications simultaneously, improving the production efficiency.

[0027] Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An adjustable roller stand, comprising a frame, wherein a first roller is installed at one end of the frame, and second rollers are symmetrically installed at the other end, and is characterized in that: A pair of movable supporting rollers are arranged between the first roller and the second roller. When the supporting rollers move, a processing station for the steel pipe workpiece is formed between the first roller and the second roller respectively.

2. The adjustable roller stand according to claim 1, wherein: A supporting roller frame is arranged on the frame, and the supporting rollers are installed on the supporting roller frame by their respective axles through bearings.

3. The adjustable roller stand according to claim 1 or 2, characterized in that: Adjusting screw holes are formed in the frame along the length direction of the frame, and the first roller, the second roller and the supporting rollers are respectively locked to the adjusting screw holes by bolts.

4. The adjustable roller stand according to claim 1 or 2, characterized in that: A first guide rail and a second guide rail are formed in the frame. A first slider and a second slider driven to slide by a first driving mechanism and a second driving mechanism are respectively arranged on the first guide rail and the second guide rail, and the first slider and the second slider are respectively connected with the supporting rollers.

5. The adjustable roller stand according to claim 4, characterized in that: A first guide shaft and a second guide shaft are respectively arranged in the first guide rail and the second guide rail, and the first slider and the second slider respectively penetrate through the first guide shaft and the second guide shaft.

6. The adjustable roller stand according to claim 1, wherein: A roller frame is arranged on the frame, and the first roller and the second roller are installed on the roller frame by their respective axles through bearings.

7. The adjustable roller stand according to claim 1 or 6, characterized in that: One ends of the first roller and the second roller are both connected with a driving mechanism.

8. The adjustable roller stand according to claim 7, wherein: The driving mechanism includes a speed reducer and a motor. The output end of the speed reducer is connected with the first roller and the second roller by their respective axles, and the input end of the speed reducer is connected with the motor.

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