A kind of self-grinding mill wear-resistant lining plate's joint hole spacing gauge

Abstract

The utility model discloses a kind of self-grinding machine wear-resistant lining board's joint hole spacing gauge tool, the tool includes: lining board gauge bracket and check sample plate;Lining board gauge bracket is fixedly connected by reinforcing bar, upper surface contour is compatible with wear-resistant lining board;Check sample plate is plate structure, thickness is consistent with the thickness of self-grinding machine's barrel shell, the lower surface contour of check sample plate is compatible with the vertical projection of the upper surface outer contour of wear-resistant lining board;Check sample plate is provided with the check hole corresponding to the joint hole position specified in wear-resistant lining board drawing paper, the aperture of check hole is consistent with the aperture of joint hole on self-grinding machine barrel shell, by special lining board gauge bracket and check sample plate combination, simulate the actual assembly condition of self-grinding machine barrel.The gauge is placed on the lining board on bracket by check sample plate when gauging, by check bolt is inserted check hole and lining board joint hole, the accuracy of joint hole position and aperture can be quickly checked. The tool does not need to turn over lining board, and the gauging efficiency is high.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical manufacturing and testing technology, and in particular relates to a tooling for measuring the spacing of the mating holes of an autogenous grinding mill wear-resistant liner. Background Technology

[0002] Wear-resistant liners are used to protect the outer shell of an autogenous mill, preventing it from being directly impacted and rubbed by the grinding media and materials. Different types of wear-resistant liners can also be used to adjust the movement of the grinding media, thereby enhancing the crushing effect of the grinding media on the materials. This helps to improve the grinding efficiency of the autogenous mill, increase output, and reduce metal consumption.

[0003] The wear-resistant liner itself has multiple mating holes, which are bolted to the outer shell of the autogenous grinding mill. Accurate positioning and assembly of the mating bolts, the mating holes on the autogenous grinding mill shell, and the mating holes on the liner are essential for the proper functioning of the wear-resistant liner. After the wear-resistant liner is delivered from the foundry to the autogenous grinding mill production site, any deviation in the diameter of the mating holes or the positioning dimensions between the multiple mating holes can prevent the liner from being installed inside the autogenous grinding mill shell. In this case, the foundry needs to send grinding workers to the autogenous grinding mill site or return the liner to the foundry for reprocessing of the mating holes. Because the liner is a wear-resistant product, grinding is very difficult, which significantly reduces the efficiency of autogenous grinding mill production preparation.

[0004] Currently, wear-resistant liners are generally manufactured using resin sand gravity casting. Due to various factors such as molding or core setting accuracy, solidification shrinkage, pouring, box making, and heat treatment, the dimensions of the liners often deviate to some extent.

[0005] In the case of multi-specification, batch production of liners (e.g., 10 specifications, with dozens of pieces of each specification produced), the dimensional inspection of the liner's mating hole diameter and the spacing between the mating holes using manual or 3D scanning methods is often time-consuming and labor-intensive (regardless of whether manual scribing or 3D scanning is used, overhead cranes are needed to flip the liners, which not only occupies overhead crane resources but is also inefficient and labor-intensive). Furthermore, during the assembly of the liners and the autogenous grinding mill cylinder, assembly difficulties and failures to achieve proper mating frequently occur. Therefore, there is an urgent need to improve the dimensional inspection efficiency of wear-resistant liners in foundries. Utility Model Content

[0006] Based on the above analysis, this utility model aims to provide a tooling for measuring the spacing of the mating holes in wear-resistant liners of autogenous grinding mills. This tooling addresses the problems of numerous liner specifications and large batches, where manual or 3D scanning measurement requires overhead crane flipping, which is time-consuming, labor-intensive, resource-intensive, inefficient, and labor-intensive. Furthermore, during assembly, misalignment of the mating holes and inability to mate the liners often occur, resulting in low measurement efficiency.

[0007] The objective of this utility model is mainly achieved through the following technical solutions:

[0008] This utility model provides a tooling for measuring the spacing of the mating holes of a wear-resistant liner plate in an autogenous grinding mill, comprising: a liner plate measuring bracket 1 and an inspection template 2; the liner plate measuring bracket 1 is fixedly connected by steel bars, and its upper surface contour is adapted to the wear-resistant liner plate; the inspection template 2 is a plate-shaped structure with a thickness consistent with the thickness of the outer shell of the autogenous grinding mill, and the lower surface contour of the inspection template 2 is adapted to the vertical projection of the outer contour of the upper surface of the wear-resistant liner plate 3.

[0009] The inspection template 2 is provided with a verification hole 21 corresponding to the position of the engagement hole specified in the drawing of the wear-resistant liner 3. The diameter of the verification hole 21 is the same as the diameter of the engagement hole on the outer shell of the autogenous mill cylinder.

[0010] Furthermore, the liner measuring bracket 1 includes several vertically arranged pillars and transverse connecting ribs connecting the pillars.

[0011] Furthermore, a reinforcing steel plate 22 is fixed on the upper surface of the inspection template 2 at the position of the verification hole 21, and the reinforcing steel plate 22 has a through hole that is coaxial with the verification hole 21 and has the same diameter.

[0012] Furthermore, the inspection template 2 is provided with lifting holes for hoisting. The lifting holes are symmetrically arranged on both sides of the center of gravity of the inspection template 2, and metal bushings are embedded in the lifting holes.

[0013] Furthermore, the outline shape of the liner measuring bracket 1 matches the shape of the wear-resistant liner 3 to stably support the wear-resistant liner 3.

[0014] Furthermore, the tooling also includes a calibration bolt, the diameter of which is the same as the diameter of the special engagement bolt for the autogenous mill cylinder, and the length of the bolt is greater than the sum of the thickness of the inspection template 2 and the depth of the engagement hole of the wear-resistant liner 3.

[0015] Furthermore, in the working state, the calibration bolt passes through the calibration hole on the inspection template and reaches the wear-resistant liner.

[0016] Furthermore, the inspection template 2 is also provided with at least two positioning reference surfaces 23. The positioning reference surfaces 23 correspond to the specific contour edges of the wear-resistant liner 3 and are used to quickly position and calibrate the position of the inspection template 2 on the wear-resistant liner 3 using a right-angle ruler.

[0017] Furthermore, the inspection template 2 is a wooden template.

[0018] Furthermore, the wear-resistant liner 3 is detachably fastened between the lower surface of the inspection template 2 and the support surface of the liner measuring bracket 1.

[0019] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0020] (1) This utility model simulates the actual assembly conditions of the autogenous grinding mill cylinder by combining a dedicated liner measuring bracket and an inspection template. During measuring, there is no need to frequently flip the liner, eliminating the dependence on overhead crane resources. It is particularly suitable for liner measuring scenarios with multiple specifications and batch production, thus improving work efficiency.

[0021] (2) By using a verification bolt for insertion verification, the diameter of the verification bolt is simulated to simulate the actual engagement bolt of the autogenous mill cylinder. This allows for a direct and accurate determination of whether the position and diameter of the liner engagement hole meet the assembly requirements. The tooling enables the early detection and handling of assembly interference problems in the foundry, effectively avoiding rework, delays and additional costs caused by the inability to install the liner after it arrives at the site.

[0022] (3) The height design of the liner measuring bracket conforms to ergonomics, making it convenient for workers to operate and inspect the positioning reference surface set on the template. This enables the template to be positioned quickly and accurately, reducing manual adjustment time and subjective errors, and ensuring the reliability and consistency of the measuring results.

[0023] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings. Attached Figure Description

[0024] The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0025] Figure 1 This is a schematic diagram of the measuring fixture for the spacing of the mating holes in the wear-resistant liner of the autogenous mill provided by this utility model.

[0026] Figure label:

[0027] 1. Liner plate measuring bracket; 2. Inspection template; 21. Verification hole; 22. Reinforcing steel plate; 23. Positioning reference surface; 3. Wear-resistant lining plate. Detailed Implementation

[0028] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of the present invention and, together with the embodiments of the present invention, serve to illustrate the principles of the present invention.

[0029] This utility model provides a tooling for measuring the spacing of the mating holes of a wear-resistant liner plate in an autogenous grinding mill, comprising: a liner plate measuring bracket 1 and an inspection template 2; the liner plate measuring bracket 1 is fixedly connected by steel bars, and its upper surface contour is adapted to the wear-resistant liner plate; the inspection template 2 is a plate-shaped structure with a thickness consistent with the thickness of the outer shell of the autogenous grinding mill, and the lower surface contour of the inspection template 2 is adapted to the vertical projection of the outer contour of the upper surface of the wear-resistant liner plate 3.

[0030] The inspection template 2 is provided with a verification hole 21 corresponding to the position of the engagement hole specified in the drawing of the wear-resistant liner 3. The diameter of the verification hole 21 is the same as the diameter of the engagement hole on the outer shell of the autogenous mill cylinder.

[0031] In this utility model, the liner measuring bracket 1 serves as the supporting base of the tooling and is fixedly connected by steel bars. The upper surface contour is adapted to the wear-resistant liner, ensuring the stability and economy of the tooling structure.

[0032] According to a specific embodiment of the present invention, considering the convenience and economy of the process, the liner measuring bracket 1 is welded from steel bars.

[0033] In this invention, in order to ensure the consistency between the inspection conditions and the actual assembly conditions, the inspection template 2 is a plate-shaped structure with a thickness consistent with the thickness of the outer shell of the autogenous grinding mill.

[0034] Furthermore, according to a specific embodiment of this utility model, the lower surface contour of the inspection template 2 is adapted to the vertical projection of the upper surface outer contour of the wear-resistant liner, so that the inspection template 2 can be accurately fitted onto the liner, thereby simulating the installation position of the autogenous mill shell in space. The position and diameter of the verification hole 21 opened on the inspection template 2 strictly correspond to the autogenous mill shell, so that the tooling can be directly used to verify the position accuracy and passability of the liner fitting hole.

[0035] According to a specific embodiment of this utility model, the liner measuring bracket 1 includes several vertically arranged pillars and transverse connecting ribs connecting the pillars. While ensuring overall rigidity and stability, the pillars also provide a universal and reliable support foundation for wear-resistant liners of different specifications.

[0036] According to a specific embodiment of this utility model, the support column and the transverse connecting rib are fixedly connected by welding to form an integrated rigid frame, which effectively prevents deformation or shaking during the measurement process.

[0037] According to a specific embodiment of this utility model, taking into account the optimized design of ergonomics, and to provide a comfortable standing operating height for the measuring personnel and improve measuring efficiency, the height of the support column is 0.5 to 1 meter.

[0038] According to a specific embodiment of the present invention, a reinforcing steel plate 22 is fixed on the upper surface of the inspection template 2 at the position of the verification hole 21, which can solve the problem that the verification hole 21 is easily worn and deformed due to repeated wear of the inspection template 2 by the verification bolt, thereby significantly improving the service life of the tooling and the verification accuracy.

[0039] Furthermore, in order to ensure the smoothness and accuracy of the verification channel, the reinforcing steel plate 22 is provided with a through hole that is coaxial with the verification hole 21 and has the same diameter.

[0040] According to a specific embodiment of this utility model, the thickness of the reinforcing steel plate 22 is 10-20 mm. When the thickness of the reinforcing steel plate 22 meets the above range, it provides sufficient wear resistance and impact resistance while avoiding affecting the hoisting and handling flexibility of the inspection sample 2 due to excessive weight increase.

[0041] According to a specific embodiment of this utility model, in order to adapt to cranes and other lifting equipment in the workshop and achieve safe, efficient handling and precise positioning of the inspection template 2, the inspection template 2 is provided with lifting holes for hoisting.

[0042] According to a specific embodiment of the present invention, in order to provide a stable and customized support surface for the wear-resistant liner 3 and prevent the liner from sliding or overturning during the measurement process, the outline shape of the liner measurement bracket 1 matches the shape of the wear-resistant liner 3 to stably support the wear-resistant liner 3.

[0043] Furthermore, the lifting holes are symmetrically arranged on both sides of the center of gravity of the inspection template 2, and metal bushings are embedded in the lifting holes to prevent wear on the wooden hole walls during the lifting process and extend their service life.

[0044] According to a specific embodiment of this utility model, the tooling also includes a calibration bolt, which serves as a core measuring tool. Its specifications directly simulate real assembly conditions and are used to verify the passability of the mating hole.

[0045] According to a specific embodiment of this utility model, the diameter of the verification bolt is the same as the diameter of the special clamping bolt for the autogenous grinding mill cylinder, and its screw length is greater than the sum of the thickness of the inspection template 2 and the clamping hole depth of the wear-resistant liner 3, so as to ensure that it can completely pass through the entire inspection channel and effectively verify that the diameter of the verification bolt is consistent with the diameter of the special clamping bolt for the autogenous grinding mill cylinder.

[0046] According to some preferred embodiments of the present invention, the diameter of the bolt is 46-50mm.

[0047] According to a specific embodiment of the present invention, in order to provide a reliable reference for the rapid and accurate installation of the inspection template 2 and to eliminate random errors caused by human placement, the inspection template 2 is also provided with at least two positioning reference surfaces 23. The positioning reference surfaces 23 correspond to the specific contour edges of the wear-resistant liner 3 and are used to quickly position and calibrate the position of the inspection template 2 on the wear-resistant liner 3 using a right-angle ruler.

[0048] According to a specific embodiment of the present invention, the positioning reference surface 23 consists of two mutually perpendicular reference edges that have been precision machined. During measurement, by simultaneously bringing the two sides of the right-angle ruler close to the positioning reference surface 23 and the corresponding specific contour edge on the wear-resistant liner 3, the inspection template 2 can be quickly calibrated to the design position.

[0049] According to a specific embodiment of this utility model, the inspection template 2 is a wooden template, which is easy to process and modify according to different lining contours, adapts to the needs of multi-specification production, and has both portability and economy.

[0050] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, provides a method for measuring the spacing of the mating holes in a wear-resistant liner according to this utility model.

[0051] Example 1

[0052] Figure 1 This is a schematic diagram of the tooling for measuring the spacing of the mating holes in the wear-resistant liner of the autogenous grinding mill provided by this utility model. Figure 1 The following components are shown: liner measuring bracket 1, inspection template 2, calibration hole 21, reinforcing steel plate 22, positioning reference surface 23, and wear-resistant liner 3.

[0053] The wear-resistant liner 3 is designed with two engagement holes, with a theoretical center-to-center distance of 1270mm. The liner measuring bracket 1 serves as the supporting base for the entire tooling, comprising four vertically arranged supports and transverse connecting ribs between these supports. The supports and transverse connecting ribs are welded together to form a stable, integrated frame. The support height is designed to be 0.8 meters, facilitating operator standing during measuring operations. The upper surface contour of the liner measuring bracket 1 is specifically designed according to the shape of the wear-resistant liner 3, enabling stable support of wear-resistant liners of different specifications and effectively preventing the liner from sliding or tipping over during measuring.

[0054] The inspection template 2 is a plate-like structure made of wood to facilitate processing and modification according to the contour of the wear-resistant liner. Its thickness is consistent with the thickness of the autogenous grinding mill shell. The lower surface contour of the inspection template 2 matches the vertical projection of the upper surface contour of the wear-resistant liner, allowing it to be precisely fitted onto the wear-resistant liner. Two verification holes 21 are provided on the inspection template. The positions of these verification holes strictly correspond to the mating hole positions specified in the drawings of the wear-resistant liner 3, and their diameter is also consistent with the mating hole diameter on the autogenous grinding mill shell, which is 50mm. To enhance the wear resistance of the verification hole area, a reinforcing steel plate 22 is fixed at each verification hole position on the upper surface of the inspection template. The thickness of the reinforcing steel plate 22 is 15mm, and a through hole with the same diameter as the verification hole 21 is provided on the reinforcing steel plate 22.

[0055] To facilitate handling and positioning, the inspection template has two symmetrically arranged lifting holes on both sides of the center of gravity. Metal bushings are embedded in the lifting holes to prevent wear during lifting. In addition, two positioning reference surfaces 23 are machined on the inspection template 2. The positioning reference surfaces are right-angle rulers, which are used in conjunction with the right-angle rulers to achieve rapid positioning and calibration of the inspection template 2 on the wear-resistant liner 3.

[0056] The tooling is also equipped with a dedicated calibration bolt, the diameter of which is the same as the actual engagement bolt used in the autogenous mill cylinder, 48mm. The bolt's length is greater than the sum of the thickness of the inspection template and the depth of the engagement hole in the wear-resistant liner, ensuring it can completely pass through the entire inspection channel. In use, the wear-resistant liner 3 is first placed on the liner gauge bracket 1. Then, the inspection template 2 is hoisted above the wear-resistant liner 3 through the hoisting hole. After quickly calibrating the position using the positioning reference surface 23, the calibration bolt is sequentially inserted into the calibration hole 21 on the inspection template 2 and the engagement hole on the wear-resistant liner 3. Whether the calibration bolt can be smoothly inserted determines whether the position and diameter of the engagement hole meet the assembly requirements.

[0057] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tooling for measuring the spacing of mating holes in an autogenous grinding mill wear-resistant liner, characterized in that, include: Liner measuring bracket (1) and inspection template (2); the liner measuring bracket (1) is fixedly connected by steel bars, and the upper surface contour is adapted to the wear-resistant liner; the inspection template (2) is a plate structure, and the thickness is consistent with the thickness of the outer shell of the autogenous mill. The lower surface contour of the inspection template (2) is adapted to the vertical projection of the upper surface outer contour of the wear-resistant liner (3); The inspection template (2) has a verification hole (21) that corresponds to the position of the engagement hole specified in the drawing of the wear-resistant liner (3). The diameter of the verification hole (21) is the same as the diameter of the engagement hole on the outer shell of the autogenous mill cylinder.

2. The tooling for measuring the spacing of mating holes according to claim 1, characterized in that, The liner measuring bracket (1) includes several vertically arranged pillars and transverse connecting ribs connecting the pillars.

3. The fixture for measuring the spacing between mating holes according to claim 1, characterized in that, The upper surface of the inspection template (2) is fixed with a reinforcing steel plate (22) at the position of the verification hole (21). The reinforcing steel plate (22) has a through hole that is coaxial with the verification hole (21) and has the same diameter.

4. The fixture for measuring the spacing between mating holes according to claim 1, characterized in that, The inspection template (2) is provided with lifting holes for hoisting. The lifting holes are symmetrically arranged on both sides of the center of gravity of the inspection template (2), and metal bushings are inlaid in the lifting holes.

5. The tooling for measuring the spacing of mating holes according to claim 1, characterized in that, The profile of the liner measuring bracket (1) matches the shape of the wear-resistant liner (3) to stably support the wear-resistant liner (3).

6. The tooling for measuring the spacing of mating holes according to claim 1, characterized in that, The tooling also includes a calibration bolt, the diameter of which is the same as the diameter of the special clamping bolt for the autogenous mill cylinder, and the length of the bolt is greater than the sum of the thickness of the inspection template (2) and the depth of the clamping hole of the wear-resistant liner (3).

7. The fixture for measuring the spacing between mating holes according to claim 6, characterized in that, In operation, the calibration bolt passes through the calibration hole on the inspection template and reaches the wear-resistant liner.

8. The fixture for measuring the spacing between mating holes according to claim 1, characterized in that, The inspection template (2) is also provided with at least two positioning reference surfaces (23), which correspond to specific contour edges of the wear-resistant liner (3) and are used to quickly position and calibrate the position of the inspection template (2) on the wear-resistant liner (3) using a right-angle ruler.

9. The fixture for measuring the spacing between mating holes according to claim 1, characterized in that, The inspection template (2) is a wooden template.

10. The tooling for measuring the spacing between mating holes according to any one of claims 1-9, characterized in that, The wear-resistant liner (3) is detachably fastened between the lower surface of the inspection template (2) and the support surface of the liner measuring bracket (1).

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