Inspection equipment for preventing interference in cylinder liner bores of engine blocks

Abstract

This utility model relates to an inspection device for preventing interference in engine block cylinder liner bores, comprising: a positioning plate, which consists of two coaxially connected cylindrical structures of different diameters, wherein the larger diameter cylinder has its end face on the upper side, and the smaller diameter cylinder has its detection part on the lower side, with the outer diameter of the smaller diameter cylinder matching the inner diameter of the engine block cylinder liner bore to be inspected; a connecting shaft, with a hole in the center of the positioning plate through which the connecting shaft is vertically inserted, coaxially connected to the positioning plate and rotatable along the shaft; and a measuring plate, which is a rectangular sheet structure, with one side fixedly connected to the connecting shaft, wherein after the measuring plate is connected to the connecting shaft, the distance from the axis of the connecting shaft to the other side of the measuring plate corresponding to the fixed side matches the inner diameter of the engine block cylinder liner bore to be inspected. The inspection device for preventing interference in engine block cylinder liner bores according to this utility model is simple to operate, highly efficient, and can complete the anti-interference inspection of cylinder liner bores efficiently, with high quality, and at low cost.

Description

Technical Field

[0001] This utility model relates to the technical field of machining process inspection tools, and more specifically, to an inspection device for preventing interference with cylinder liner bores in machine blocks. Background Technology

[0002] After the cylinder liner bore of the diesel engine block is machined, there is an unmachined surface at the bottom, namely the cast blank surface. If the cast blank is too large, it will cause interference during cylinder liner installation and prevent correct assembly.

[0003] Currently, two methods are used for inspection during the processing, both of which have the following drawbacks: Method 1: Directly test-fitting the cylinder liner. Because the cylinder liner itself is heavy, and inspecting the actual cylinder liner is prone to collisions with the engine block, there is a risk involved. Method 2: Measuring with simple tools such as general-purpose calipers. However, the measured dimensions cannot be aligned with the countersunk holes at the cylinder liner mounting location on the engine block, leading to inaccurate measurements.

[0004] Therefore, there is an urgent need to design a dedicated inspection tool that simulates the cylinder liner dimensions and is used for inspection after the machine block is machined. This tool and equipment need to be simple and practical to operate, reliable and stable, and highly efficient, so as to complete the anti-interference inspection of the cylinder liner bore in a high-efficiency, high-quality and low-cost manner. Summary of the Invention

[0005] The technical problem to be solved by this utility model is how to efficiently complete the anti-interference inspection of the cylinder liner bore of the engine block.

[0006] To solve the above-mentioned technical problems, this utility model provides an inspection device for preventing interference in cylinder liner bores of engine blocks. The device includes: a positioning plate, which consists of two coaxially connected cylindrical structures of different diameters. The larger diameter cylinder has its end face on the upper side, and the smaller diameter cylinder has its detection part on the lower side. The outer diameter of the smaller diameter cylinder matches the inner diameter of the cylinder liner bore to be inspected. A connecting shaft has a hole in the center of the positioning plate, through which a connecting shaft is vertically inserted. The connecting shaft is coaxially connected to the positioning plate and can rotate along the shaft. A measuring plate is a rectangular sheet structure, with one side fixedly connected to the connecting shaft. After the measuring plate is connected to the connecting shaft, the distance from the axis of the connecting shaft to the other side of the measuring plate corresponding to the fixed side matches the inner diameter of the cylinder liner bore to be inspected. The inspection device is placed into the cylinder liner bore to be inspected, so that the outer circle and end face of the detection part of the measuring plate match the cylinder liner bore. The connecting shaft and the measuring plate rotate one revolution. If there is no interference, it proves that there is no interference in the cylinder liner bore, and the cylinder liner bore is qualified.

[0007] According to an embodiment of the present invention, the inspection device for preventing interference of cylinder liner bores in the engine block may further include: a thrust bearing, a connecting shaft and a positioning plate connected by the thrust bearing, so that the connecting shaft can rotate in a direction perpendicular to the positioning plate.

[0008] According to an embodiment of the present invention, the inspection device for preventing interference of cylinder liner bores in the machine body may further include: a bearing cover, a retaining cover, a first bolt, and a nut, wherein the bearing cover passes through the connecting shaft in the middle and is pressed against the positioning plate by the lower side of the positioning plate, the retaining cover is pressed against the positioning plate by the upper side of the positioning plate, and the bearing cover and the retaining cover are fixed to the positioning plate by the first bolt and the nut.

[0009] According to an embodiment of this utility model, the inspection device for preventing interference of cylinder liner bores in the engine block may further include: a washer and a round nut, with the connecting shaft connected in sequence via the round nut, washer and thrust bearing.

[0010] According to an embodiment of the present invention, the gasket can maintain a gap with the cover.

[0011] According to an embodiment of the present invention, the inspection device for preventing interference of cylinder liner bores in machine bodies may further include: a handle, which is disposed at the upper end of the connecting shaft and perpendicular to the connecting shaft, so as to facilitate the operation of the connecting shaft to rotate and thereby perform inspection.

[0012] According to an embodiment of the present invention, the inspection device for preventing interference of cylinder liner bores in the engine block may further include: a cylindrical pin and a second bolt, wherein the measuring plate is connected to the neglected connecting shaft via the cylindrical pin and the second bolt.

[0013] According to an embodiment of the present invention, the distance from the junction of the end face of the positioning plate and the detection part to the bottom of the detection plate can be less than or equal to the depth of the cylinder liner hole of the machine body to be tested.

[0014] According to an embodiment of this utility model, the positioning plate can be integrally formed.

[0015] According to an embodiment of this utility model, the positioning plate can be made of aluminum to prevent it from bumping into the machine body.

[0016] Compared with the prior art, the technical solution provided by the embodiments of this utility model can achieve at least the following beneficial effects:

[0017] According to this utility model, the inspection device for preventing interference in cylinder liner bores of an engine block is inserted entirely into the cylinder liner bore of the engine block to be inspected, ensuring that the outer circle and end face of the measuring plate mate with the cylinder liner bore. Rotating the handle causes the connecting shaft and measuring plate to rotate one full turn. If no interference is observed, it proves that there are no interference points in the engine block cylinder liner bore, and the engine block cylinder liner bore is qualified. Otherwise, further inspection of the interference points is required, followed by repair and grinding. After repair, the tool is reused for inspection. This inspection device is simple and practical to operate, reliable and stable, and highly efficient, enabling efficient, high-quality, and low-cost inspection of cylinder liner bore interference prevention. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly introduced below. Obviously, the drawings described below only involve some embodiments of this utility model, and are not intended to limit this utility model.

[0019] Figure 1 This is a schematic diagram of an inspection device for preventing interference with cylinder liner bores in an engine block, according to an embodiment of the present invention. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains. The terms “first,” “second,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an” or “a” and similar terms do not indicate a limitation of quantity, but rather indicate the presence of at least one.

[0022] Figure 1 This is a schematic diagram of an inspection device for preventing interference with cylinder liner bores in an engine block, according to an embodiment of the present invention.

[0023] like Figure 1 As shown, the inspection equipment for preventing interference in the cylinder liner bore of the engine block includes: positioning plate 1, connecting shaft 3, and measuring plate 2.

[0024] Positioning plate 1 consists of two coaxially connected cylindrical structures of different diameters. The larger diameter cylinder has its end face on the upper side, while the smaller diameter cylinder has its detection part on the lower side. The outer diameter of the smaller diameter cylinder matches the inner diameter of the cylinder liner bore to be inspected.

[0025] The positioning plate 1 has a hole in the middle, through which a connecting shaft 3 is vertically inserted. The connecting shaft 3 is coaxially connected to the positioning plate 1 and can rotate along the shaft.

[0026] The measuring plate 2 is a rectangular sheet structure, with one side fixedly connected to the connecting shaft 3.

[0027] After the measuring plate 2 is connected to the connecting shaft 3, the distance from the axis of the connecting shaft 3 to the other side of the measuring plate 2 corresponding to the fixed side matches the inner diameter of the cylinder liner hole to be inspected. The inspection equipment is placed into the cylinder liner hole to be inspected, so that the outer circle and end face of the measuring plate 2 are in sync with the cylinder liner hole. The connecting shaft 3 and the measuring plate 2 are rotated one revolution. If there is no interference, it proves that there is no interference part in the cylinder liner hole and the cylinder liner hole is qualified.

[0028] According to one or more embodiments of the present invention, the inspection device for preventing interference of cylinder liner bores in the engine block further includes: a thrust bearing 6, a connecting shaft 3 and a positioning plate 1 connected by the thrust bearing 6, so that the connecting shaft 3 can rotate in a direction perpendicular to the positioning plate 1.

[0029] According to one or more embodiments of the present invention, the inspection device for preventing interference of the cylinder liner bore of the machine body further includes: bearing cover 5, cover 10, first bolt 4, and nut 7, wherein the bearing cover 5 passes through the connecting shaft 3 in the middle and is pressed against the positioning plate 1 by the lower side of the positioning plate 1, the cover 10 is pressed against the positioning plate 1 by the upper side of the positioning plate 1, and the bearing cover 5 and the cover 10 are fixed on the positioning plate 1 by the first bolt 4 and nut 7.

[0030] According to one or more embodiments of the present invention, the inspection device for preventing interference of cylinder liner bores in the engine block further includes: a washer 9 and a round nut 8, and the connecting shaft 3 is connected in sequence through the round nut 8, the washer 9 and the thrust bearing 6.

[0031] According to one or more embodiments of the present invention, the washer 9 and the cover 10 maintain a gap.

[0032] According to one or more embodiments of the present invention, the inspection device for preventing interference of cylinder liner bores in machine body further includes: a handle, which is disposed at the upper end of the connecting shaft 3 and perpendicular to the connecting shaft 3, so as to facilitate the operation of the connecting shaft 3 to rotate and thus perform inspection.

[0033] According to one or more embodiments of the present invention, the inspection device for preventing interference of cylinder liner bores in the engine block further includes: a cylindrical pin 12 and a second bolt 13, wherein the measuring plate 2 is connected to the neglected connecting shaft 3 via the cylindrical pin 12 and the second bolt 13.

[0034] According to one or more embodiments of the present invention, the distance from the junction of the end face of the positioning plate 1 and the detection part to the bottom of the detection plate is less than or equal to the depth of the cylinder liner hole of the machine body to be tested.

[0035] According to one or more embodiments of the present invention, the positioning plate 1 is integrally formed.

[0036] According to one or more embodiments of this utility model, the positioning plate 1 is made of aluminum to prevent it from bumping against the machine body.

[0037] According to this utility model, the inspection device for preventing interference in cylinder liner bores of an engine block is inserted entirely into the cylinder liner bore of the engine block to be inspected, ensuring that the outer circle and end face of the measuring plate mate with the cylinder liner bore. Rotating the handle causes the connecting shaft and measuring plate to rotate one full turn. If no interference is observed, it proves that there are no interference points in the engine block cylinder liner bore, and the engine block cylinder liner bore is qualified. Otherwise, further inspection of the interference points is required, followed by repair and grinding. After repair, the tool is reused for inspection. This inspection device is simple and practical to operate, reliable and stable, and highly efficient, enabling efficient, high-quality, and low-cost inspection of cylinder liner bore interference prevention.

[0038] The above description is merely an exemplary embodiment of the present invention and is not intended to limit the scope of protection of the present invention. The scope of protection of the present invention is determined by the appended claims.

Claims

1. An inspection device for preventing interference in cylinder liner bores of engine blocks, characterized in that, include: The positioning plate consists of two coaxially connected cylindrical structures of different diameters. The larger diameter cylinder has its end face on the upper side, while the smaller diameter cylinder has its detection part on the lower side. The outer diameter of the smaller diameter cylinder matches the inner diameter of the cylinder liner bore to be inspected. A connecting shaft is provided, with a hole in the middle of the positioning plate through which the connecting shaft is vertically inserted. The connecting shaft is coaxially connected to the positioning plate and can rotate along the shaft. The measuring plate is a rectangular sheet structure, with one side fixedly connected to the connecting shaft. Wherein, after the measuring plate is connected to the connecting shaft, the distance from the axis of the connecting shaft to the other side of the measuring plate corresponding to the fixed side matches the inner diameter of the cylinder liner bore of the machine body to be inspected.

2. The inspection equipment for preventing interference with cylinder liner bores in engine blocks as described in claim 1, characterized in that, It also includes a thrust bearing, wherein the connecting shaft and the positioning plate are connected by the thrust bearing, so that the connecting shaft can rotate in a direction perpendicular to the positioning plate.

3. The inspection equipment for preventing interference in cylinder liner bores of an engine block as described in claim 2, characterized in that, Also includes: The bearing cover, the retaining cover, the first bolt, and the nut are provided. The bearing cover passes through the connecting shaft in the middle and is pressed against the positioning plate by the lower side of the positioning plate. The retaining cover is pressed against the positioning plate by the upper side of the positioning plate. The bearing cover and the retaining cover are fixed to the positioning plate by the first bolt and the nut.

4. The inspection equipment for preventing interference in cylinder liner bores of an engine block as described in claim 3, characterized in that, Also includes: The connecting shaft is connected in sequence via a washer and a round nut, and the connecting shaft is connected via a round nut, a washer and the thrust bearing.

5. The inspection equipment for preventing interference in cylinder liner bores of an engine block as described in claim 4, characterized in that, The gasket maintains a gap with the cover.

6. The inspection equipment for preventing interference with cylinder liner bores in engine blocks as described in claim 1, characterized in that, Also includes: A handle is provided at the upper end of the connecting shaft and is perpendicular to the connecting shaft to facilitate the rotation of the connecting shaft for inspection.

7. The inspection equipment for preventing interference in cylinder liner bores of an engine block as described in claim 1, characterized in that, Also includes: The measuring plate is connected to the neglected connecting shaft via a cylindrical pin and a second bolt.

8. The inspection equipment for preventing interference with cylinder liner bores in engine blocks as described in claim 1, characterized in that, The distance from the junction of the end face of the positioning plate and the detection part to the bottom of the detection plate is less than or equal to the depth of the cylinder liner hole of the machine body to be tested.

9. The inspection equipment for preventing interference with cylinder liner bores in engine blocks as described in claim 1, characterized in that, The positioning plate is integrally formed.

10. The inspection equipment for preventing interference with cylinder liner bores in engine blocks as described in claim 1, characterized in that, The positioning plate is made of aluminum to prevent it from bumping into the machine body.

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