A roller device

Abstract

The present invention relates to a roller device, which comprises an eccentric shaft, wherein the eccentric shaft has a central shaft section, a first mounting shaft section and a second mounting shaft section, wherein the axis lines of the first mounting shaft section and the second mounting shaft section are both deviated from the axis center of the central shaft section, and the axis lines of the first mounting shaft section and the second mounting shaft section are at different heights, a first supporting wheel is concentrically mounted on the first mounting shaft section, and a second supporting wheel is concentrically mounted on the second mounting shaft section, and the eccentric shaft can rotate around the central shaft section to a first state and a second state, wherein in the first state, the working surface of the first supporting wheel is radially outside the working surface of the second supporting wheel; and in the second state, the working surface of the second supporting wheel is radially outside the working surface of the first supporting wheel. The invention solves the problem of how to quickly solve the problem of roller damage.

Description

Technical Field

[0001] The invention relates to a roller device which can be used for track rollers of automated heating furnaces (annular quenching furnaces, walking beam heating furnaces). Background Art

[0002] At present, most of the track rollers used in automated heating furnaces (annular quenching furnaces, walking beam heating furnaces) are single-wheel roller devices. When they fail to work, they must be shut down for inspection and replacement.

[0003] Equipment downtime will cause a series of problems:

[0004] 1. The production line is interrupted and the production target may not be met;

[0005] 2. Every time the equipment is started or shut down, a lot of extra energy will be consumed, resulting in an increase in production costs;

[0006] 3. The semi-finished balls that have entered the annular quenching furnace will not be able to meet the quenching process and temperature requirements due to equipment shutdown, resulting in isolation and the production of unqualified products.

[0007] Therefore, improvement is needed. Summary of the invention

[0008] The purpose of the present invention is to provide a roller device, which solves the problem of how to quickly solve the damage of the roller.

[0009] In order to achieve the above object, the technical solution adopted by the present invention is:

[0010] The present invention provides a roller device, which includes an eccentric shaft, wherein the eccentric shaft has a central shaft section, a first mounting shaft section and a second mounting shaft section, the axis lines of the first mounting shaft section and the second mounting shaft section are both deviated from the axis center of the central shaft section, and the axis lines of the first mounting shaft section and the second mounting shaft section are at different heights, a first supporting wheel is concentrically mounted on the first mounting shaft section, and a second supporting wheel is concentrically mounted on the second mounting shaft section, and the eccentric shaft can rotate around the central shaft section to a first state and a second state, in the first state, the working surface of the first supporting wheel is radially outside the working surface of the second supporting wheel; in the second state, the working surface of the second supporting wheel is radially outside the working surface of the first supporting wheel.

[0011] Preferably, a tapered bearing is provided between the first supporting wheel and the eccentric shaft, and a tapered bearing is also provided between the second supporting wheel and the eccentric shaft.

[0012] Furthermore, two tapered bearings in opposite directions are arranged between the first supporting wheel and the eccentric shaft, and two tapered bearings in opposite directions are also arranged between the second supporting wheel and the eccentric shaft.

[0013] Furthermore, removable cover plates are provided on both sides of the first supporting wheel and the second supporting wheel, and the cover plates limit the tapered bearing.

[0014] Preferably, the central shaft section is arranged at two ends of the eccentric shaft, and the central shaft section is sleeved in a fixing frame.

[0015] Furthermore, a detachable pressure cover is provided on the fixing frame, and a rotation-stopping bar is provided on the central shaft section. The rotation-stopping bar is combined in the pressure cover, and the rotation-stopping bar is braked in the pressure cover.

[0016] Furthermore, the anti-rotation strip is in the shape of an elongated strip, and the pressure cover is provided with an elongated groove matching the anti-rotation strip.

[0017] Preferably, a detachable limiting nut is provided on at least one side of the first installation shaft segment and the second installation shaft segment.

[0018] Preferably, a limiting shaft segment is further arranged between the first installation shaft segment and the second installation shaft segment, and the outer circumference of the limiting shaft segment protrudes from the first installation shaft segment and the second installation shaft segment.

[0019] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0020] The roller device of the present invention replaces the ordinary shaft in the roller device with an eccentric shaft, thereby realizing the installation of the first supporting wheel and the second supporting wheel at different heights on the eccentric shaft, and the switching of the height positions of the first supporting wheel and the second supporting wheel is achieved by rotating the eccentric shaft, so that one of the supporting wheels is used as a working supporting wheel. When the working supporting wheel is damaged, the eccentric shaft is rotated so that the other supporting wheel is lifted and becomes the working supporting wheel. Such operation takes extremely short time and has little effect on normal production, thereby ensuring production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0022] Figure 1 is a cross-sectional view of a roller device according to a preferred embodiment of the present invention;

[0023] Figure 2It is the side view of the central shaft section in the eccentric shaft and the overall front view of the eccentric shaft;

[0024] Figure 3 It is the side view and center section view of the gland;

[0025] Figure 4 This is a cross-sectional view of the roller device after the roller is switched. Figure 1 in contrast;

[0026] The reference numerals are described as follows:

[0027] 1. Eccentric shaft; 101. Central shaft section; 102. First installation shaft section; 103. Second installation shaft section; 104. Anti-rotation strip; 105. Nut installation shaft section; 106. Limiting shaft section;

[0028] 2. The first supporting wheel;

[0029] 3. Second supporting wheel;

[0030] 4. Tapered bearings;

[0031] 5. Cover plate;

[0032] 6. Fixed frame;

[0033] 7. gland; 701. groove;

[0034] 8. Limit nut;

[0035] 9. Long bolts. DETAILED DESCRIPTION

[0036] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments 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 creative work are within the scope of protection of the present invention.

[0037] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0038] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0039] like Figure 1 As shown, the roller device includes an eccentric shaft 1 and a first supporting wheel 2 and a second supporting wheel 3 sleeved on the eccentric shaft 1. The first supporting wheel 2 or the second supporting wheel 3 is used to support the upper object. The uppermost edge of the first supporting wheel 2 and the second supporting wheel 3 is a working surface. Figure 1 In the embodiment, the working surface of the first supporting wheel 2 is higher than that of the second supporting wheel 3. At this time, the first supporting wheel 2 plays a role as a working supporting wheel, while the second supporting wheel 3 is in a standby state. Figure 4 When the eccentric shaft 1 is rotated, specifically 180°, the working surface of the second supporting wheel 3 is switched to be higher than the first supporting wheel 2. At this time, the second supporting wheel 3 plays a role as a working supporting wheel. In normal operation, first use Figure 1 When the first supporting wheel 2 is damaged, the second supporting wheel 3 is switched to the working supporting wheel by rotating the eccentric shaft 1. Figure 4 This operation takes a very short time and can usually be completed within 5 minutes. It has little impact on normal production, thus ensuring production efficiency.

[0040] like Figure 2 The eccentric shaft 1 has a central shaft section 101, a first mounting shaft section 102, a second mounting shaft section 103, a nut mounting shaft section 105 and a limiting shaft section 106.

[0041] The central shaft section 101 is arranged at both ends of the eccentric shaft 1, and the central shaft section 101 is sleeved in the fixing frame 6 and is connected to the fixing frame 6 by the pressure cover 7 (see Figure 1 , Figure 3 ) to achieve rotation stop. Figure 2 The outer end of the central shaft section 101 is provided with a rotation-stopping strip 104, which is in the shape of a long strip. Figure 3 The pressure cover 7 is provided with an embedding groove 701 , which is in the shape of an elongated strip. The shape of the embedding groove 701 matches the shape of the anti-rotation strip 104 .

[0042] The gland 7 is fixed in the fixing frame 6 by bolts. When the eccentric shaft 1 needs to be rotated, the glands 7 on both sides are detached from the fixing frame 6, and the eccentric shaft 1 is rotated by 180°, and then the glands 7 are installed. Before rotating the eccentric shaft 1, the gland 7 may not be separated from the anti-rotation bar 104. At this time, the eccentric shaft 1 can be rotated by manually rotating the gland 7, so that the gland 7 plays the role of a wrench, and then the bolts are inserted to install the gland 7 on the fixing frame 6.

[0043] Combination Figure 1 , Figure 2 The first installation shaft section 102 deviates from the axis of the central shaft section 101, so that when the eccentric shaft 1 is rotated as a whole, the height of the first installation shaft section 102 will change. The first installation shaft section 102 is concentrically sleeved with a first supporting wheel 2 on its outer periphery.

[0044] A tapered bearing 4 is provided between the first supporting wheel 2 and the first mounting shaft section 102. The tapered bearing 4 can withstand greater pressure without being easily damaged. The first supporting wheel 2 will undergo a certain amount of twisting during operation. The use of a tapered bearing 4 can better adapt to such a situation. In this example, two tapered bearings 4 are provided between the first supporting wheel 2 and the first mounting shaft section 102 at the same time, and the two tapered bearings 4 are in opposite directions, so as to adapt to the twisting of the first supporting wheel 2 in different directions. Removable cover plates 5 are provided on both sides of the first supporting wheel 2, and the cover plates 5 limit the tapered bearings 4. The cover plates 5 are removably fixed to the first supporting wheel 2 by long bolts 9.

[0045] Combination Figure 1 , Figure 2 The second installation shaft section 103 deviates from the axis of the central shaft section 101, so that when the eccentric shaft 1 is rotated as a whole, the height of the second installation shaft section 103 will change. The second installation shaft section 103 is concentrically sleeved with a second supporting wheel 3 on its outer periphery.

[0046] The axis center lines of the first installation shaft section 102 and the second installation shaft section 103 are at different heights. During the rotation of the eccentric shaft 1, the height of the axis center lines of the first installation shaft section 102 and the second installation shaft section 103 will change. Figure 1 In the embodiment, the eccentric shaft 1 is in the first state, Figure 4 In the figure, the eccentric shaft 1 is relative to Figure 1 It has been rotated 180° and switched to the second state.

[0047] exist Figure 1 In the state, the axis centerline height of the first installation shaft section 102 is greater than the axis centerline height of the second installation shaft section 103, so that the working surface of the first supporting wheel 2 is radially outside the working surface of the second supporting wheel 3, that is, the top edge height of the first supporting wheel 2 is greater than the top edge height of the second supporting wheel 3. At this time, the first supporting wheel 2 plays a supporting role, and the second supporting wheel 3 is standby.

[0048] exist Figure 4 In the state, the height of the axis centerline of the second installation shaft section 103 is greater than the height of the axis centerline of the first installation shaft section 102, so that the working surface of the second supporting wheel 3 is radially outside the working surface of the first supporting wheel 2, that is, the top edge height of the second supporting wheel 3 is greater than the top edge height of the first supporting wheel 2. At this time, the second supporting wheel 3 plays a supporting role, and the first supporting wheel 2 is standby.

[0049] The second supporting wheel 3 is basically the same structure as the first supporting wheel 2 and is installed in the same manner. Two tapered bearings 4 in opposite directions are arranged between the second supporting wheel 3 and the second installation shaft section 103. Removable cover plates 5 are arranged on both sides of the second supporting wheel 3, and the cover plates 5 limit the tapered bearings 4. The cover plates 5 are removably fixed to the second supporting wheel 3 by long bolts 9.

[0050] like Figure 1and Figure 4 A limiting shaft section 106 is also provided between the first supporting wheel 2 and the second supporting wheel 3. The outer periphery of the limiting shaft section 106 protrudes from the first mounting shaft section 102 and the second mounting shaft section 103. The limiting shaft section 106 functions to block and limit the first supporting wheel 2 and the second supporting wheel 3 respectively. The outer sides of the first supporting wheel 2 and the second supporting wheel 3 are blocked and limited by the limiting nut 8.

[0051] The limiting nut 8 is threadedly coupled to the nut mounting shaft section 105. Two limiting nuts 8 are provided on each side to achieve the purpose of tightening, so that it is not easy to shift. When the damaged first supporting wheel 2 or second supporting wheel 3 needs to be replaced, the blocking limit can be released by removing the limiting nut 8, so that a quick replacement can be achieved.

[0052] In summary, the roller device of this example is provided with an eccentric shaft 1, on which the first supporting wheel 2 and the second supporting wheel 3 of different heights are mounted. By rotating the eccentric shaft 1, the height of the first supporting wheel 2 and the second supporting wheel 3 can be switched, for example, the damaged first supporting wheel 2 can be quickly switched from a high position to a low position and abandoned, and the spare second supporting wheel 3 can be switched from a low position to a high position and enabled. Such a quick switch takes a very short time and has basically no effect on normal production, thereby ensuring production efficiency.

[0053] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the contents of the present invention and implement them accordingly. They cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A roller device, characterized in that: It comprises an eccentric shaft (1), the eccentric shaft (1) having a central shaft section (101), a first mounting shaft section (102) and a second mounting shaft section (103), the axis lines of the first mounting shaft section (102) and the second mounting shaft section (103) are both offset from the axis of the central shaft section (101), and the axis lines of the first mounting shaft section (102) and the second mounting shaft section (103) are at different heights, a first supporting wheel (2) is coaxially mounted on the first mounting shaft section (102), and a second supporting wheel (3) is coaxially mounted on the second mounting shaft section (103), the eccentric shaft (1) can rotate around the central shaft section (101) to a first state and a second state, in the first state, the working surface of the first supporting wheel (2) is located radially outside the working surface of the second supporting wheel (3); in the second state, the working surface of the second supporting wheel (3) is located radially outside the working surface of the first supporting wheel (2); Two tapered bearings (4) in opposite directions are arranged between the first supporting wheel (2) and the eccentric shaft (1), and two tapered bearings (4) in opposite directions are also arranged between the second supporting wheel (3) and the eccentric shaft (1); The central shaft section (101) is arranged at both ends of the eccentric shaft (1), and the central shaft section (101) is sleeved in a fixing frame (6); a detachable pressure cover (7) is arranged on the fixing frame (6), and a rotation-stopping strip (104) is arranged on the central shaft section (101), and the rotation-stopping strip (104) is combined in the pressure cover (7), and the rotation-stopping strip (104) is braked in the pressure cover (7); A limiting shaft segment (106) is also provided between the first installation shaft segment (102) and the second installation shaft segment (103), and the outer periphery of the limiting shaft segment (106) protrudes from the first installation shaft segment (102) and the second installation shaft segment (103).

2. The roller device according to claim 1, characterized in that: Removable cover plates (5) are provided on both sides of the first supporting wheel (2) and the second supporting wheel (3), and the cover plates (5) limit the tapered bearing (4).

3. The roller device according to claim 1, characterized in that: The anti-rotation strip (104) is in the shape of an elongated strip, and the pressure cover (7) is provided with an elongated embedded groove (701) matching the anti-rotation strip (104).

4. The roller device according to claim 1, characterized in that: At least one side of the first installation shaft section (102) and the second installation shaft section (103) is provided with a detachable limiting nut (8).

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