Rolling idle roller

Abstract

The utility model discloses a rolling idle roller, and belongs to the technical field of rolling rollers. Comprising bearing seats and roller shafts which are arranged in pairs, and the two bearing seats are arranged in parallel at intervals; the roll shaft comprises an inner shaft, a roller and two end covers, the two ends of the inner shaft are rotationally connected with the bearings correspondingly, the roller coaxially sleeves the middle of the inner shaft, a circulation gap is formed between the inner wall of the roller and the outer wall of the inner shaft, the two ends of the roller are each provided with one end cover, and the two ends of the roller are in sealed connection with the outer wall of the inner shaft through the end covers; one end of the inner shaft is provided with a liquid inlet channel, the other end of the inner shaft is provided with a liquid outlet channel, and the liquid inlet channel and the liquid outlet channel are communicated with the circulation gap. The problems that a traditional heat exchange flow channel is too complex, the machining difficulty is large, and the manufacturing cost is high are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of rolling rollers, in particular to a rolling idle roller. Background Art

[0002] Rebar is widely used in industrial construction and is an essential material for urban development, making its quality crucial. During the production process, rebar undergoes roller slabbing before and after rough, intermediate, and finishing rolling. These rollers reduce surface damage caused by friction during production, minimizing issues such as substandard surface quality. They convert sliding friction between the workpiece and the guide grooves into rolling friction, ensuring that the rolling speed remains constant. However, due to long-term use, the surface of the rollers is susceptible to wear. The roller bearings, exposed to prolonged heat, can deteriorate the lubricating oil, leading to lubrication failure and ultimately bearing damage, which in turn damages the rollers. Publication number CN108787754B discloses an internally cooled, self-temperature-controlled roll, comprising a passive neck, a roll body, and an active neck. The passive neck and active neck are fixed to opposite ends of the roll body, respectively. The roll body is hollow, and the passive neck is provided with a liquid collection chamber connected to the interior of the roll body. The internally cooled, self-temperature-controlled roll also includes a liquid guide installed within the liquid collection chamber and the roll body. The liquid guide comprises an inlet pipe and a guide tube. The gap between the guide tube and the inner wall of the roll body forms a heat exchanger. Coolant enters the internally cooled, self-temperature-controlled roll from the inlet pipe and flows through the heat exchanger, removing heat from the roll body and cooling it. By designing the roll body as a hollow interior and utilizing the space within the interior for the liquid guide, the roll temperature is automatically controlled during service, eliminating the need for water cooling of the roll surface. This prevents leaching of the workpiece and enables a water-free cooling process for the roll surface and workpiece during hot continuous rolling of steel. In the above-mentioned patent scheme, its internally cooled self-temperature-controlled rolling mill also includes a liquid guide, which is installed in the liquid collecting chamber and the inside of the roller body, and forms a working layer transition layer and an inner layer, etc. Its essence is to form a circuitous heat exchange flow channel in the structure, but the circuitous heat exchange flow channel of the above-mentioned self-cooling rolling mill scheme forms a multi-layer structure which is too complicated, difficult to process, and high in cost. Summary of the Invention

[0003] The purpose of the utility model is to provide a rolling idler roller to solve the problems that traditional heat exchange channels are too complicated, difficult to process and high in cost.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the present utility model is:

[0005] A rolling idle roller comprises a bearing seat and a roller shaft arranged in pairs, and the two bearing seats are arranged alternately and parallel to each other; the roller shaft comprises an inner shaft, a roller and two end covers, each end of the inner shaft corresponds to a bearing for rotation connection, the roller is coaxially sleeved in the middle of the inner shaft, a flow gap is provided between the inner wall of the roller and the outer wall of the inner shaft, each end of the roller is provided with an end cover, and both ends of the roller are sealed with the outer wall of the inner shaft through the end cover; one end of the inner shaft is provided with a liquid inlet channel, and the other end is provided with a liquid outlet channel, and the liquid inlet channel and the liquid outlet channel are both connected to the flow gap.

[0006] Furthermore, the end cover is annular, the outer edge of the end cover is sealed to the inner wall of the roller, and the inner edge of the end cover is sealed to the outer wall of the inner shaft.

[0007] Furthermore, the inner wall of the roller is provided with a first step surface, and the inner edge of the end cover is pressed on the first step surface; the outer wall of the inner shaft is provided with a second step surface, and the inner edge of the end cover is pressed on the second step surface.

[0008] Furthermore, the end of the liquid inlet channel and the end of the liquid outlet channel are both connected to the cooling water pipe through a rotary joint.

[0009] Furthermore, a plurality of recessed grooves are provided on the outer wall of the roller, and the recessed grooves are arranged along the axial direction of the roller, and a wear-resistant strip is embedded in each recessed groove.

[0010] Furthermore, the liquid inlet channel and the liquid outlet channel are both T-shaped structures, the vertical end of the T-shaped structure is coaxially arranged with the inner shaft, the horizontal end of the T-shaped structure is arranged along the radial direction of the inner shaft, and both ends of the horizontal end of the T-shaped structure are connected to the flow gap.

[0011] Due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0012] 1. The utility model changes the original bearing installation inside the roller into a bearing installation outside the roller, and adds a bearing seat, thereby reducing the problem of severe heating of the bearing and thus reducing bearing damage; at the same time, a cooling water channel is formed by the liquid inlet channel, the circulation gap and the liquid outlet channel. The cooling water can contact the roller through the circulation gap and take away the heat of the roller to achieve cooling, which can protect the bearing and increase the service life of the roller; and the cooling water channel of the utility model is a single-layer arrangement, which has a simple structure and is less difficult to process and assemble than the cooling water channel with multiple layers, which can reduce the cost.

[0013] 2. The utility model is provided with a first step surface and a second step surface, which facilitates the installation and sealing setting of the end cover and improves the reliability of the device; by providing wear-resistant strips, the wear resistance of the roller surface is greatly improved, which can reduce the problem of failure of the empty roller due to surface wear.

[0014] 3. The liquid inlet channel and the liquid outlet channel of the utility model are both T-shaped structures, which are easy to process. The liquid inlet channel or the liquid outlet channel can be formed by only drilling holes axially at the end of the inner shaft and radially in the middle of the inner shaft, which further simplifies the complexity of the device and further improves the cost and easy processing advantages of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a cross-sectional structural diagram of the utility model;

[0016] In the accompanying drawings, 1-bearing seat, 2-roller, 3-rotary joint, 4-cooling water pipe, 21-inner shaft, 22-roller, 23-end cover, 24-circulation gap, 25-liquid inlet channel, 26-liquid outlet channel, 27-first step surface, 28-second step surface, 29-wear-resistant strip. DETAILED DESCRIPTION

[0017] The specific implementation of the utility model is further described below with reference to the accompanying drawings.

[0018] In the description of the present invention, it should be understood that the terms "center", "length", "width", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying 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 a limitation on the present invention.

[0019] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; they can refer to direct connection or indirect connection through an intermediate medium; they can refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0020] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0021] See Figure 1 A rolling idler roller comprises a bearing seat 1 and a roller shaft 2 arranged in pairs, and the two bearing seats 1 are arranged alternately and parallel to each other; the roller shaft 2 comprises an inner shaft, a roller 22 and two end covers 23, each end of the inner shaft corresponds to a bearing for rotation connection, the roller 22 is coaxially sleeved in the middle of the inner shaft, and a flow gap 24 is provided between the inner wall of the roller 22 and the outer wall of the inner shaft, and an end cover 23 is provided at each end of the roller 22, and both ends of the roller 22 are sealed with the outer wall of the inner shaft through the end cover 23; a liquid inlet channel 25 is provided at one end of the inner shaft, and a liquid outlet channel 26 is provided at the other end, and the liquid inlet channel 25 and the liquid outlet channel 26 are both connected to the flow gap 24.

[0022] In this embodiment, the end cap 23 is annular, with its outer edge sealingly connected to the inner wall of the roller 22, and its inner edge sealingly connected to the outer wall of the inner shaft. Specifically, a first step surface 27 is provided on the inner wall of the roller 22, against which the inner edge of the end cap 23 presses; a second step surface 28 is provided on the outer wall of the inner shaft, against which the inner edge of the end cap 23 presses. It should be noted that the sealing of the first and second step surfaces 27, 28 can be achieved by applying glue or using conventional rubber gaskets. The provision of the first and second step surfaces 27, 28 facilitates the installation and sealing of the end cap 23, thereby improving the reliability of the device.

[0023] In this embodiment, the ends of the liquid inlet channel 25 and the liquid outlet channel 26 are both connected to the cooling water pipe 4 via a rotary joint 3. It should be noted that the rotary joint 3 is a single-channel rotary joint 3, and the rotary joint 3 is an existing accessory that can be directly purchased on the market, and its specific structure is not repeated in this embodiment.

[0024] In this embodiment, the outer wall of the roller 22 is provided with a plurality of recessed grooves, arranged along the axial direction of the roller 22. Each recessed groove has a wear-resistant strip 29 embedded within it. Specifically, the recessed grooves are evenly distributed along the outer wall of the roller 22. The wear-resistant strips 29 can be inserted into the recessed grooves with a tight fit or secured with bolts or screws. The provision of the wear-resistant strips 29 greatly improves the surface wear resistance of the roller 22, reducing the problem of roller failure caused by surface wear.

[0025] In this embodiment, both the liquid inlet channel 25 and the liquid outlet channel 26 have a T-shaped structure, with the vertical end of the T-shaped structure coaxially disposed with the inner shaft, and the transverse end of the T-shaped structure disposed radially along the inner shaft. Both ends of the transverse end of the T-shaped structure communicate with the flow gap 24. The T-shaped structure of both the liquid inlet channel 25 and the liquid outlet channel 26 is simple to manufacture. The liquid inlet channel 25 or the liquid outlet channel 26 can be formed by simply drilling holes axially at the ends of the inner shaft and radially at the middle of the inner shaft. This further simplifies the complexity of the device, further improving the cost and ease of manufacture of the device.

[0026] The above description is a detailed description of the preferred embodiments of the present invention, but the embodiments are not intended to limit the scope of the patent application of the present invention. All equivalent changes or modifications completed under the technical spirit suggested by the present invention should fall within the patent scope covered by the present invention.

Claims

1. A rolling idle roller, characterized in that: It includes a bearing seat and a roller shaft arranged in pairs, and the two bearing seats are arranged alternately and parallel to each other; the roller shaft includes an inner shaft, a roller and two end covers, each end of the inner shaft corresponds to a bearing for rotation connection, the roller is coaxially sleeved on the middle of the inner shaft, a flow gap is provided between the inner wall of the roller and the outer wall of the inner shaft, each end of the roller is provided with an end cover, and both ends of the roller are sealed with the outer wall of the inner shaft through the end cover; one end of the inner shaft is provided with a liquid inlet channel, and the other end is provided with a liquid outlet channel, and the liquid inlet channel and the liquid outlet channel are both connected to the flow gap.

2. The rolling idle roller according to claim 1, characterized in that: The end cover is annular, the outer edge of the end cover is sealed to the inner wall of the roller, and the inner edge of the end cover is sealed to the outer wall of the inner shaft.

3. The rolling idle roller according to claim 2, characterized in that: The inner wall of the roller is provided with a first step surface, and the inner edge of the end cover is pressed on the first step surface; the outer wall of the inner shaft is provided with a second step surface, and the inner edge of the end cover is pressed on the second step surface.

4. The rolling idle roller according to claim 1, characterized in that: The end of the liquid inlet channel and the end of the liquid outlet channel are both connected to the cooling water pipe through a rotary joint.

5. The rolling idle roller according to claim 1, characterized in that: A plurality of concave grooves are provided on the outer wall of the roller, and the concave grooves are arranged along the axial direction of the roller. A wear-resistant strip is embedded in each of the concave grooves.

6. The rolling idle roller according to claim 1, characterized in that: The liquid inlet channel and the liquid outlet channel are both T-shaped structures, the vertical end of the T-shaped structure is coaxially arranged with the inner shaft, the horizontal end of the T-shaped structure is arranged along the radial direction of the inner shaft, and both ends of the horizontal end of the T-shaped structure are connected to the flow gap.

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