Rolling guide roller device of wire rod rolling mill

Abstract

The utility model discloses a rolling guide roller device of a wire mill, which belongs to the technical field of steel rolling and comprises a horizontally arranged guide roller shaft, a guide roller is sleeved on the guide roller shaft, a bearing is arranged between the guide roller and the guide roller shaft, and the guide roller can rotate along the circumferential direction of the guide roller shaft through the bearing. Guide and guard arms used for limiting axial displacement of the guide and guard roller are arranged on the guide and guard roller shafts located on the two sides of the guide and guard roller, an oil supplementing cavity communicated with a bearing installation position is formed in the guide and guard roller located on the inner side of the bearing installation position, a center oil way is arranged in the guide and guard roller shaft in the axial direction, one end of the center oil way penetrates to the end face of the guide and guard roller shaft, and the other end of the center oil way penetrates to the end face of the guide and guard roller shaft. An oil supplementing branch is arranged on the center oil way corresponding to the oil supplementing cavity, and the center oil way is communicated with the oil supplementing cavity through the oil supplementing branch. According to the utility model, the bearings can be fully lubricated, so that the stable and reliable rotation of the guide roller is ensured, and the failure of the rolling guide is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel rolling, in particular to a rolling guide roller device for a wire rolling mill. Background Art

[0002] The function of the rolling guide is to clamp the upstream workpiece with the guide roller and guide the head of the workpiece to smoothly enter the rolling groove of the rolling mill. When the workpiece passes through, the rolling guide drives the guide roller to rotate due to friction, and the guide roller shaft, bearing retaining ring and dust cover remain stationary. If the guide roller rotates poorly or does not rotate, it will inevitably affect the clamping effect of the workpiece head.

[0003] The rotation quality of the guide roller depends on the operation of the bearing. If the bearing is damaged, the rolling guide will fail, causing the head of the rolled piece to twist and enter the rolling groove. When it enters the exit guide after rolling, it will cause steel scraping at the least, and the scraped steel bars will hang on the inner wall of the exit guide, ultimately affecting the surface quality of the finished product. In severe cases, the irregular head of the rolled piece will directly hit the exit guide, causing the exit guide to be ejected or piled up. Therefore, it is imperative to improve the use efficiency and life of the guide rollers and bearings. Summary of the invention

[0004] In view of the problems existing in the prior art, the utility model provides a rolling guide roller device for a wire rolling mill, which can fully lubricate the bearings, thereby ensuring stable and reliable rotation of the guide rollers and avoiding failure of the rolling guides.

[0005] The utility model is achieved in that a rolling guide roller device of a wire rolling mill comprises a horizontally arranged guide roller shaft, a guide roller is sleeved on the guide roller shaft, a bearing is arranged between the guide roller and the guide roller shaft, the guide roller can rotate along the circumferential direction of the guide roller shaft through the bearing, guide arms for limiting the axial displacement of the guide roller are arranged on the guide roller shafts on both sides of the guide roller, an oil replenishing cavity which is communicated with the bearing installation position is arranged inside the guide roller located inside the bearing installation position, a central oil circuit is axially arranged inside the guide roller shaft, one end of the central oil circuit penetrates to the end face of the guide roller shaft to form an oil inlet, an oil replenishing branch circuit is arranged on the central oil circuit corresponding to the oil replenishing cavity, and the oil replenishing branch circuit connects the central oil circuit with the oil replenishing cavity.

[0006] Furthermore, dust covers are respectively arranged on the guide roller shafts at the end faces of the guide rollers, the dust covers are arranged opposite to the end faces of the guide rollers, a recess is arranged at the center of the dust covers in the direction of the bearing, and a bearing retaining ring is arranged on the inner surface of the recess, so that the dust covers are against the bearing positions, thereby enhancing the dustproof effect.

[0007] Furthermore, the diameter of the oil replenishment branch near the oil inlet is smaller than the diameter of the oil replenishment branch far from the oil inlet, so as to ensure that the oil and gas output of the two groups of oil replenishment branches is balanced.

[0008] Furthermore, the oil replenishment branches are distributed in a cross shape, which can ensure that the oil replenishment branches evenly replenish oil and gas in all directions of the corresponding oil replenishment cavities, thereby ensuring that the bearings can be adequately supplied with oil at key locations.

[0009] Furthermore, the oil replenishment cavity is a conical cavity, and the large diameter end of the oil replenishment cavity faces the bearing installation side. The conical cavity is conducive to collecting the oil and gas sprayed from the oil replenishment branch of the guide roller shaft, and effectively lubricates the bearing along the inner wall of the conical cavity.

[0010] Furthermore, a central hole for the guide roller shaft to pass through is horizontally arranged in the guide roller, mounting cavities for placing bearings are respectively arranged at both ends of the guide roller, and the oil replenishing cavity is arranged inside the mounting cavity and communicates with the mounting cavity.

[0011] Furthermore, the center lines of the installation cavity, the oil supply cavity and the center hole all coincide with the horizontal center line of the guide roller.

[0012] Furthermore, a threaded section is provided at one end of the guide roller shaft, and a limiting portion is provided on the end surface of the guide roller shaft away from the threaded section, and the diameter of the limiting portion is larger than the diameter of the guide roller shaft; a groove matching the limiting portion is provided on the guide arm corresponding to the limiting portion, and the threaded section is fixed to the guide arm on the corresponding side by a fastener.

[0013] The utility model has the advantages and technical effects: due to the adoption of the technical scheme, the bearing can be fully lubricated, thereby ensuring the stable and reliable rotation of the guide roller, avoiding the failure of the rolling guide.

[0014] The oil replenishment cavity, central oil circuit and oil replenishment branch circuit are set to make the oil and gas distribution more uniform and reduce the oil and gas consumption; the dust cover is installed more tightly to reduce the pollution of impurities to the bearing and increase the service life of the guide roller and bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure provided by an embodiment of the utility model;

[0016] Figure 2 It is a schematic diagram of the guide roller shaft structure provided by an embodiment of the utility model;

[0017] Figure 3 It is a schematic diagram of the structure of the guide roller provided in the embodiment of the utility model;

[0018] Figure 4 It is a schematic diagram of the installation structure of the dust cover and the bearing retaining ring provided in the embodiment of the utility model.

[0019] In the figure: 1. guide roller shaft; 1-1. center oil circuit; 1-2. oil supply branch; 1-3. oil inlet; 1-4. threaded section; 1-5. limit part; 2. guide roller; 2-1. oil supply cavity; 2-2. center hole; 2-3. installation cavity; 3. bearing; 4. guide arm; 5. dust cover; 5-1. recessed part; 6. bearing retaining ring; 7. fastener. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail in combination with the embodiments below. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0021] It should be noted that the terms "upper", "lower", "left", "right", "top", "bottom", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0022] like Figures 1 to 4 As shown, the present application provides a rolling guide roller device for a wire rod rolling mill, comprising a horizontally arranged guide roller shaft 1, a guide roller 2 is sleeved on the guide roller shaft 1, a bearing 3 is arranged between the guide roller 2 and the guide roller shaft 1, the guide roller 2 can rotate along the circumference of the guide roller shaft 1 through the bearing 3, and guide arms 4 for limiting the axial displacement of the guide roller 2 are arranged on the guide roller shaft 1 on both sides of the guide roller 2. Specifically, two bearings 3 are provided, which are respectively placed in the end faces of both sides of the guide roller 2.

[0023] An oil replenishing cavity 2-1 which is in communication with the bearing 3 mounting position is arranged inside the guide roller 2 located inside the bearing 3 mounting position, and a central oil circuit 1-1 is axially arranged inside the guide roller shaft 1, and one end of the central oil circuit 1-1 penetrates through the end face of the guide roller shaft 1 to form an oil inlet 1-3, and a quick connector is arranged on the oil inlet 1-3 for connecting with an external oil and gas transmission pipeline, and an oil replenishing branch circuit 1-2 is arranged on the central oil circuit 1-1 corresponding to the oil replenishing cavity 2-1, and the oil replenishing branch circuit 1-2 connects the central oil circuit 1-1 with the oil replenishing cavity 2-1.

[0024] Furthermore, dust covers 5 are respectively provided on the guide roller shaft 1 at the end surface of the guide roller 2, and the dust covers 5 are arranged opposite to the end surface of the guide roller 2. A recessed portion 5-1 is provided at the center of the dust cover 5 in the direction of the bearing 3, and a bearing retaining ring 6 is provided on the inner surface of the recessed portion 5-1. The dust cover 5 is abutted against the bearing 3, thereby enhancing the dustproof effect.

[0025] Furthermore, the diameter of the oil replenishment branch 1-2 near the oil inlet 1-3 is smaller than the diameter of the oil replenishment branch 1-2 far from the oil inlet 1-3. The oil and gas output of the two groups of oil replenishment branches 1-2 is ensured to be balanced. It is ensured that the oil replenishment branch 1-2 far from the oil inlet 1-3 can still have enough oil and gas to lubricate the corresponding bearing 3. Since there are two bearings 3, two groups of oil replenishment branches 1-2 and oil replenishment cavities 2-1 are provided corresponding to the bearing 3, thereby forming an oil replenishment branch 1-2 near the oil inlet 1-3 and an oil replenishment branch 1-2 far from the oil inlet 1-3. The specific diameter of the oil replenishment branch 1-2 is comprehensively determined by the supply oil and gas pressure, flow rate and the diameter of the central oil circuit 1-1 of the guide roller shaft 1.

[0026] Furthermore, the oil replenishment branches 1-2 are distributed in a cross shape, which can ensure that the oil replenishment branches 1-2 evenly replenish oil and gas in all directions of the corresponding oil replenishment cavities 2-1, thereby ensuring that the bearing 3 can be adequately supplied with oil at key locations. The center lines of each group of oil replenishment branches 1-2 are on the same plane.

[0027] Furthermore, the oil replenishment cavity 2-1 is a conical cavity, and the large diameter end of the oil replenishment cavity 2-1 faces the installation side of the bearing 3. The conical cavity is conducive to collecting the oil and gas sprayed from the oil replenishment branch 1-2 of the guide roller shaft 1, and effectively lubricates the bearing 3 along the inner wall of the conical cavity.

[0028] Furthermore, a center hole 2-2 for the guide roller shaft 1 to pass through is horizontally arranged in the guide roller 2, and mounting cavities 2-3 for placing the bearing 3 are respectively arranged at both ends of the guide roller 2, and the oil replenishing cavity 2-1 is placed inside the mounting cavity 2-3 and communicates with the mounting cavity 2-3.

[0029] Furthermore, the center lines of the installation cavity 2 - 3 , the oil supply cavity 2 - 1 and the center hole 2 - 2 all coincide with the horizontal center line of the guide roller 2 .

[0030] Furthermore, a threaded section 1-4 is provided at one end of the guide roller shaft 1, and a limiting portion 1-5 is provided on the end face of the guide roller shaft 1 away from the threaded section 1-4, and the diameter of the limiting portion 1-5 is larger than the diameter of the guide roller shaft 1; a groove matching the limiting portion 1-5 is provided on the guide arm 4 corresponding to the limiting portion 1-5, and the threaded section 1-4 is fixed to the guide arm 4 on the corresponding side by a fastener 7. Specifically, the fastener 7 is a nut.

[0031] By adopting the above technical solution, the bearing 3 can be fully lubricated, thereby ensuring the stable and reliable rotation of the guide roller 2 and avoiding the failure of the rolling guide.

[0032] The oil replenishment cavity 2-1, the central oil circuit 1-1 and the oil replenishment branch circuit 1-2 are provided to make the oil and gas distribution more uniform and reduce the oil and gas consumption; the dust cover 5 is installed more tightly to reduce the pollution of impurities to the bearing 3 and increase the service life of the guide roller 2 and the bearing 3.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A rolling guide roller device for a wire rod rolling mill, comprising a horizontally arranged guide roller shaft, a guide roller sleeved on the guide roller shaft, a bearing arranged between the guide roller and the guide roller shaft, the guide roller can rotate along the circumferential direction of the guide roller shaft through the bearing, and guide arms for limiting the axial displacement of the guide roller are arranged on the guide roller shafts on both sides of the guide roller, characterized in that: An oil replenishing cavity which is in communication with the bearing mounting position is arranged inside the guide roller located inside the bearing mounting position, a central oil circuit is arranged axially inside the guide roller shaft, one end of the central oil circuit penetrates to the end face of the guide roller shaft to form an oil inlet, and an oil replenishing branch circuit is arranged on the central oil circuit corresponding to the oil replenishing cavity, and the oil replenishing branch circuit connects the central oil circuit with the oil replenishing cavity.

2. The rolling guide roller device of the wire rod rolling mill according to claim 1, characterized in that: A dust cover is respectively arranged on the guide roller shaft at the end surface of the guide roller, and the dust cover is arranged opposite to the end surface of the guide roller. A recessed portion is arranged at the center of the dust cover toward the bearing, and a bearing retaining ring is arranged on the inner surface of the recessed portion.

3. The rolling guide roller device of a wire rod rolling mill according to claim 1 or 2, characterized in that: The diameter of the oil supply branch line close to the oil inlet is smaller than the diameter of the oil supply branch line far from the oil inlet.

4. The rolling guide roller device of a wire rod rolling mill according to claim 1, characterized in that: The oil replenishment branches are distributed in a cross shape.

5. The rolling guide roller device of a wire rod rolling mill according to claim 1, characterized in that: The oil replenishing cavity is a conical cavity, and the large diameter end of the oil replenishing cavity faces the bearing installation side.

6. The rolling guide roller device of a wire rod rolling mill according to claim 1, characterized in that: A central hole for the guide roller shaft to pass through is horizontally arranged in the guide roller, and mounting cavities for placing bearings are respectively arranged at both ends of the guide roller. The oil replenishing cavity is arranged inside the mounting cavity and is connected with the mounting cavity.

7. The rolling guide roller device of the wire rod rolling mill according to claim 6, characterized in that: The center lines of the installation cavity, the oil supply cavity and the center hole all coincide with the horizontal center line of the guide roller.

8. The rolling guide roller device of a wire rod rolling mill according to claim 1, characterized in that: A threaded section is provided at one end of the guide roller shaft, and a limiting portion is provided on the end surface of the guide roller shaft away from the threaded section, and the diameter of the limiting portion is larger than the diameter of the guide roller shaft; a groove matching the limiting portion is provided on the guide arm corresponding to the limiting portion, and the threaded section is fixed to the guide arm on the corresponding side by a fastener.

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