Wear resistant upper and lower pinch roll

Abstract

The utility model discloses a kind of wear-resistant upper and lower pinch rolls, including two groups of supports symmetrically arranged, support between being equipped with support rod fixed;Further include: lower roller assembly, lower roller assembly includes lower pinch roll, the both sides of lower pinch roll are equipped with the rotating shaft one rotationally connected with support;Upper roller assembly, upper roller assembly includes upper pinch roll and the adjusting assembly for adjusting the distance between upper pinch roll and lower pinch roll, adjusting assembly includes sliding block and telescopic rod, the inner wall of support is equipped with slide rail, the inside of sliding block is equipped with bearing and the rotating shaft two connection of the both sides of upper pinch roll, telescopic rod is installed in support top and telescopic section is connected with sliding block by penetrating support;Upper pinch roll and lower pinch roll sequentially include base layer, laser cladding layer and plasma spraying layer from inside to outside.The utility model belongs to pinch roll technical field, specifically is to provide a kind of for solving the problem that pinch roll wear resistance is insufficient in the prior art, and upper and lower pinch roll is not convenient to adaptability adjustment according to billet thickness, maintenance efficiency is low.

Description

Technical Field

[0001] This utility model belongs to the field of pinch roller technology, specifically referring to a wear-resistant upper and lower pinch roller. Background Technology

[0002] Pinch rolls are key equipment in steel rolling production lines, used to clamp and convey materials such as steel plates and strips. Existing pinch roll technologies generally suffer from the following defects:

[0003] 1. Traditional pinch rollers have low surface hardness and are prone to wear during high-speed continuous operation, resulting in frequent replacements and affecting production efficiency.

[0004] 2. Most pinch rolls adopt a structure with the upper roll fixed and the lower roll fine-tuning. When the billet specifications change, it is impossible to accurately ensure the alignment of the rolling center line. It is necessary to stop the machine and manually adjust the pads. The manual adjustment has a large error.

[0005] 3. The integral support requires the disassembly of all connecting parts to change the roller, and there is no guide and limit structure, which makes the rolled material prone to deviation. Utility Model Content

[0006] The technical problem to be solved by this utility model is that the wear resistance of the pinch rollers is insufficient in the prior art, and the upper and lower pinch rollers are not easy to adjust according to the thickness of the billet, resulting in low maintenance efficiency.

[0007] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0008] This utility model discloses a wear-resistant upper and lower pinch roller, comprising two sets of symmetrically arranged supports, with a support rod fixing the supports between them; and further comprising:

[0009] The lower roller assembly includes a lower pinch roller, and the lower pinch roller has a rotating shaft on both sides that is rotatably connected to the bracket. The horizontal height of the lower pinch roller relative to the bracket remains unchanged.

[0010] The upper roller assembly includes an upper pinch roller disposed above the lower pinch roller and an adjustment component for adjusting the distance between the upper pinch roller and the lower pinch roller. The adjustment component includes a slider and a telescopic rod. The inner wall of the bracket is provided with a slide rail that matches the slider. The inner side of the slider is provided with a bearing that is connected to the rotating shafts on both sides of the upper pinch roller. The telescopic rod is installed on the top of the bracket and the telescopic section passes through the bracket and is connected to the slider.

[0011] The upper and lower pinch rollers, from the inside out, consist of a base layer, a laser cladding layer, and a plasma spraying layer, respectively.

[0012] Preferably, the slide rail is composed of a first track and a second track, the cross-section of the first track and the second track is L-shaped, and the side end of the slider is provided with a U-shaped groove that matches the slide rail.

[0013] Preferably, the lower pinch roller has limit blocks at both ends forming an H-shaped cross-section, and the upper pinch roller is rotatably positioned between the limit blocks on both sides to provide a limiting function.

[0014] Preferably, the plasma spraying layer is a plasma-sprayed tungsten carbide layer, and the laser cladding layer is a laser-clad iron-based alloy layer.

[0015] Preferably, the thickness of the plasma-sprayed tungsten carbide layer is 0.8-1.2 mm, and the thickness of the laser-clad iron-based alloy layer is 2 mm.

[0016] Preferably, a synchronization controller is provided between the two telescopic rods to achieve synchronous driving of the two sets of telescopic rods.

[0017] Preferably, the support rod has positive and negative threads at both ends, and the inner wall of the bracket has a threaded hole that matches the thread of the support rod, so as to realize the disassembly of the support rod and the bracket to replace the upper pinch roller / lower pinch roller. The support rod is arranged in four sets, which are arranged in pairs between the upper and lower ends of the bracket on both sides.

[0018] The beneficial effects of this utility model by adopting the above structure are as follows:

[0019] 1. The wear resistance of the roller surface is increased by using a gradient wear-resistant layer, thereby extending its service life.

[0020] 2. Under the action of the adjustment component, the distance between the upper and lower pinch rollers is adjusted by using the telescopic rod. The double telescopic rods are driven synchronously, resulting in high adjustment accuracy.

[0021] 3. The bracket can be quickly disassembled by using positive and negative threaded support rods, which can greatly improve the speed of roller changing, while the limit block can constrain the lateral displacement of the upper roller and the displacement of the rolled material. Attached Figure Description

[0022] Figure 1 A schematic diagram of the overall structure of a wear-resistant upper and lower pinch roller provided in this application;

[0023] Figure 2 This is a schematic diagram of the internal structure of this application;

[0024] Figure 3 This is a partial structural diagram of the adjustment component in this application.

[0025] Among them, 1. bracket, 2. support rod, 3. lower roller assembly, 4. upper roller assembly, and 5. adjustment assembly;

[0026] 11. Slide rail; 12. Rail 1; 13. Rail 2;

[0027] 21. Thread;

[0028] 31. Lower pinch roller; 32. Rotary shaft one; 33. Limit block;

[0029] 301. Substrate layer; 302. Laser cladding layer; 303. Plasma spraying layer;

[0030] 41. Upper pinch roller; 42. Rotating shaft two;

[0031] 51. Slider, 52. Telescopic rod, 53. Bearing.

[0032] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0034] In this application, unless otherwise expressly 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 application based on the specific circumstances.

[0035] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] Example 1

[0037] refer to Figure 1 and Figure 2 As shown, the wear-resistant upper and lower pinch roller proposed in this utility model includes two sets of brackets symmetrically arranged, with a support rod 2 fixed between the brackets 1; it also includes:

[0038] The lower roller assembly 3 includes a lower pinch roller 31. The lower pinch roller 31 has a rotating shaft 32 on both sides that is rotatably connected to the bracket 1. The bracket 1 can also be fitted with a bearing structure at the matching slot of the rotating shaft 32 to support its rotation. The horizontal height of the lower pinch roller 31 relative to the bracket 1 remains unchanged.

[0039] The upper roller assembly 4 includes an upper pinch roller 41 disposed above the lower pinch roller 31 and an adjustment assembly 5 for adjusting the distance between the upper pinch roller 41 and the lower pinch roller 31. The adjustment assembly 5 includes a slider 51 and a telescopic rod 52. The inner wall of the bracket 1 is provided with a slide rail 11 that matches the slider 51. The inner side of the slider 51 is provided with a bearing 53 that is connected to the rotating shafts 42 on both sides of the upper pinch roller 41. The telescopic rod 52 is installed on the top of the bracket 1 and the telescopic section passes through the bracket 1 and is connected to the slider 51.

[0040] The slide rail 11 is composed of a first track 12 and a second track 13, both of which have L-shaped cross-sections. The slider 51 has a U-shaped groove on its side that matches the slide rail 11. The lower clamping roller 31 has H-shaped cross-sections formed by limiting blocks 33 at both ends. The upper clamping roller 41 is rotatably positioned between the limiting blocks 33 on both sides to provide a limiting function.

[0041] To improve the wear resistance of the pinch rollers, refer to Figure 2 As shown:

[0042] The upper pinch roller 41 and lower pinch roller 31, from the inside out, sequentially comprise a substrate layer 301, a laser cladding layer 302, and a plasma spraying layer 303. Further explanation: the plasma spraying layer 303 is a plasma-sprayed tungsten carbide layer, and the laser cladding layer 302 is a laser-clad iron-based alloy layer. The thickness of the plasma-sprayed tungsten carbide layer is 0.8-1.2 mm, and the thickness of the laser-clad iron-based alloy layer is 2 mm.

[0043] In this structure, the wear resistance of the roller surface is increased by a gradient wear-resistant layer, thereby improving its service life.

[0044] As a further example:

[0045] A synchronization controller is provided between the two telescopic rods 52 to achieve synchronous driving of the two sets of telescopic rods 52. During the adjustment of the distance between the upper and lower pinch rollers 31 using the telescopic rods 52, the stroke adjustment of the telescopic rods 52 is mechanically controlled. The telescopic rod 52 model can be Huiling Technology Z-Mod-EP-42ZS-100, with a stroke of 100mm, supporting micron-level positioning, and an accuracy of ±0.02mm.

[0046] In summary, the spacing between the upper clamping roller 41 and the lower clamping roller 31 is adjusted by using the telescopic rod 52 for synchronous driving, and the adjustment accuracy is high.

[0047] Example 2

[0048] Combination Figure 1 and Figure 3 As shown, the two ends of the support rod 2 are provided with positive and negative threads 21, and the inner wall of the bracket 1 is provided with screw holes that match the threads 21 of the support rod 2. The support rod 2 is provided in four sets, arranged in pairs between the upper and lower ends of the bracket 1 on both sides.

[0049] When using this structure, the support rod 2 is connected to the two side brackets 1 by the thread 21, so that the support rod 2 and the bracket 1 can be detached, thereby replacing the upper pinch roller 41 / lower pinch roller 31, which can greatly improve the roller changing speed.

[0050] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A wear-resistant upper and lower pinch roller (31), comprising two sets of supports (1) symmetrically arranged, wherein a support rod (2) is provided between the supports (1) for fixation, characterized in that, Also includes: The lower roller assembly (3) includes a lower pinch roller (31), and the lower pinch roller (31) has a rotating shaft (32) on both sides that is rotatably connected to the bracket (1). The horizontal height of the lower pinch roller (31) relative to the bracket (1) remains unchanged. The upper roller assembly (4) includes an upper pinch roller (41) located above the lower pinch roller (31) and an adjustment assembly (5) for adjusting the distance between the upper pinch roller (41) and the lower pinch roller (31). The adjustment assembly (5) includes a slider (51) and a telescopic rod (52). The inner wall of the bracket (1) is provided with a slide rail (11) that matches the slider (51). The inner side of the slider (51) is provided with a bearing (53) that is connected to the rotating shafts (42) on both sides of the upper pinch roller (41). The telescopic rod (52) is installed on the top of the bracket (1) and the telescopic section passes through the bracket (1) and is connected to the slider (51). The upper pinch roller (41) and the lower pinch roller (31) consist of a base layer (301), a laser cladding layer (302), and a plasma spraying layer (303) from the inside to the outside.

2. The wear-resistant upper and lower pinch roller according to claim 1, characterized in that: The lower pinch roller (31) has limit blocks (33) at both ends forming an H-shaped cross section, and the upper pinch roller (41) is rotatably positioned between the limit blocks (33) on both sides.

3. The wear-resistant upper and lower pinch roller according to claim 1, characterized in that: The support rod (2) has positive and negative threads (21) at both ends. The inner wall of the bracket (1) has screw holes that match the threads (21) of the support rod (2). The support rod (2) is provided with four sets of parallel supports (1) on both sides between the upper and lower ends of the bracket (1).

4. The wear-resistant upper and lower pinch roller according to claim 1, characterized in that: The plasma spraying layer (303) is a plasma sprayed tungsten carbide layer, and the laser cladding layer (302) is a laser cladding iron-based alloy layer.

5. The wear-resistant upper and lower pinch roller according to claim 1, characterized in that: A synchronization controller is provided between the two telescopic rods (52) to realize the synchronous drive of the two sets of telescopic rods (52).

6. The wear-resistant upper and lower pinch roller according to claim 1, characterized in that: The slide rail (11) is composed of track one (12) and track two (13). The cross-section of track one (12) and track two (13) is L-shaped. The slider (51) has a concave groove on its side that matches the slide rail (11).

7. The wear-resistant upper and lower pinch roller according to claim 4, characterized in that: The thickness of the plasma-sprayed tungsten carbide layer is 0.8-1.2 mm, and the thickness of the laser-clad iron-based alloy layer is 2 mm.

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