Crankshaft lower tile positioning and mounting tool

Abstract

The utility model relates to the field of part installation tools, in particular to a crankshaft lower tile positioning installation tool. In order to overcome the defects of high labor intensity and poor mounting precision of manual mounting in the prior art, the utility model provides the crankshaft lower tile positioning and mounting tool which can reduce the labor intensity of workers and improve the mounting precision. A crankshaft lower tile positioning tool comprises a fixing base, a lower tile supporting block matched with a lower tile is arranged in the middle of the fixing base, the lower tile supporting block is semicircular, four dividing strips are arranged in the circumferential direction of the lower tile supporting block, and the lower tile supporting block is evenly divided into five lower tile mounting areas by the four dividing strips. The width of each lower tile installation area is the same as the width of a lower tile, positioning holes are formed in the portions, on the two sides of each lower tile installation area, of the fixing base, segmentation blocks corresponding to the segmentation strips in position are arranged on the portions, on the two sides of each segmentation strip, of the fixing base, and the positioning holes are spaced through the segmentation blocks.

Description

Technical Field

[0001] The utility model relates to the field of component installation tools, in particular to a crankshaft lower tile positioning and installation tool. Background Art

[0002] The crankshaft is the most important part of the engine. It bears the force from the connecting rod and converts it into torque, which is output through the crankshaft and drives other accessories on the engine. The crankshaft is subjected to the combined effects of the centrifugal force of the rotating mass, the periodically changing gas inertia force and the reciprocating inertia force, which makes the crankshaft subject to bending and torsion loads. Therefore, the crankshaft is required to have sufficient strength and rigidity, and the journal surface must be wear-resistant, work evenly and have good balance.

[0003] The bearings and lubricating elements installed on the fixed brackets of the crankshaft and cylinder block are usually called crankshaft bearings.

[0004] The crankshaft lower tile should be installed on the crankshaft lower tile cover. The locating key on the lower tile should be aligned with the locating groove on the lower tile cover. There should be no high points, otherwise the radial clearance of the crankshaft installation will be affected.

[0005] The five lower tiles of the crankshaft of the engine production line need to be installed on the five lower crankshaft covers respectively. In order to ensure the production rhythm, employees need to continuously press the tiles into the lower crankshaft covers, that is, place the lower crankshaft covers underneath and press the tiles on them, and then place them on the engine tray for the next tooling to use.

[0006] However, it still has the following disadvantages in actual use:

[0007] Employees mainly rely on the thumb pressing action to install the lower tile into the lower tile cover. In the early stage, the production rhythm was low, with 20 engines per hour, 160 engines produced in 8 hours, 5 tiles per engine, and 800 lower tiles pressed onto the crankshaft lower tile cover every day. The fatigue of the thumb was acceptable; but as the production rhythm increased to 56 engines per hour, the exponentially increased workload greatly increased the labor intensity of the employees' thumbs, causing symptoms of thumb pain and reduced production efficiency; and the number of cases where the tile locating keys were not installed properly increased with the increase in output. After the crankshaft friction torque detection station alarmed, it would take more time and cost to repair, while reducing the quality stability of the product. Utility Model Content

[0008] The utility model aims to solve the shortcomings of the prior art that manual installation has high labor intensity and poor installation precision, and to provide a crankshaft lower tile positioning and installation tool which reduces manual labor intensity and improves installation precision.

[0009] In order to solve the above technical problems, the crankshaft lower tile positioning tool of the utility model is realized by the following technical solutions:

[0010] A crankshaft lower tile positioning tool, which is special in that it includes a fixing seat, a lower tile support block matching the lower tile is provided in the middle of the fixing seat, the lower tile support block is semicircular, and four dividing strips are provided in the circumference of the lower tile support block, and the four dividing strips evenly divide the lower tile support block into five lower tile installation areas, and the width of each lower tile installation area is the same as the width of the lower tile, and the fixing seats on both sides of each lower tile installation area are provided with positioning holes, and the fixing seats on both sides of each dividing strip are provided with dividing blocks corresponding to the dividing strip, and the dividing blocks separate the positioning holes:

[0011] Preferably, both ends of the fixing seats on both sides of the lower tile support block are provided with fixing holes;

[0012] Preferably, a bracket for fixing the fixing seat is installed in the fixing hole, and the other end of the bracket is installed on the engine production line;

[0013] Preferably, the bracket is L-shaped, its horizontal plate is a rectangular frame and is fixedly installed below the fixing seat, and its vertical plate is provided with a mounting block installed on the engine production line;

[0014] Preferably, a mounting hole is provided on the horizontal plate of the bracket, and a bolt passes through the fixing hole of the fixing seat and the mounting hole of the bracket to fix the fixing seat and the bracket;

[0015] Preferably, the fixing seat is a rectangular parallelepiped, and the width is the same as the length of the lower tile;

[0016] Preferably, a gap is left between the lower tile support block and the fixing seats on both sides thereof;

[0017] Preferably, the positioning hole is a through hole;

[0018] Preferably, both ends of the lower tile support block are provided with limit blocks, the height of the limit blocks is higher than the dividing strip, and the limit blocks can prevent the lower tile from falling off;

[0019] Preferably, one end of each of the lower tile installation areas is provided with a lubrication hole that passes through the entire lower tile cover support block, and the outlet of the lubrication hole is located on the lower surface of the fixing seat at the other end of the lower tile installation area;

[0020] Preferably, the five lower tile installation areas are lower tile installation area No. 1, lower tile installation area No. 2, lower tile installation area No. 3, lower tile installation area No. 4 and lower tile installation area No. 5, respectively.

[0021] The crankshaft lower tile positioning and installation tool of the present invention only needs to place the lower tile on the lower tile installation area according to the number, and no verification is required, thus reducing the step of verification for workers and reducing the labor intensity of workers; since the lower tile supporting block supports the lower tile, the lower tile cover can be placed on it, and the installation mode of the tile on top and the tile cover on the bottom is converted into the installation mode of the tile on the bottom and the tile cover on the top, without the need for workers to press with their thumbs, thus freeing up the workers' thumbs and reducing labor intensity; since the width of the lower tile installation area is the same as the width of the lower tile, and the width of the fixing seat is the same as the length of the lower tile, there is no need for workers to verify, and directly placing the lower tile on the lower tile installation area can ensure that the hole on the lower tile coincides with the positioning hole, and then placing the lower tile cover on the lower tile without manual alignment, the hole on the lower tile cover coincides with the hole and the positioning hole on the lower tile, thereby improving the installation quality, improving the installation efficiency, and ultimately reducing the rework rate, without spending more time and cost on rework, and at the same time improving the quality stability of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 It is a three-dimensional schematic diagram of the first viewing angle of the present utility model;

[0024] Figure 2 for Figure 1 The main view;

[0025] Figure 3 It is a three-dimensional schematic diagram of the second viewing angle of the utility model;

[0026] Figure 4 This is a schematic diagram of the lower tile;

[0027] Figure 5 This is a schematic diagram of the lower tile cover;

[0028] Figure 6 The figure is a schematic diagram of the installation of the lower tile and the lower tile cover;

[0029] Figure 7 It is a schematic diagram of the use of the utility model.

[0030] In the figure: 1. fixing seat, 2. lower tile support block, 3. dividing strip, 4. lower tile installation area, 5. positioning hole, 6. dividing block, 7. fixing hole, 8. bracket, 8-1, mounting block, 8-2, mounting hole, 9. gap, 10. lubrication hole, 11. limit block, 12, lower tile, 13, lower tile cover. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0032] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific implementation methods disclosed below.

[0033] Example. Figures 1 to 3 A crankshaft lower tile positioning tool shown in the figure comprises a fixing seat 1, a lower tile support block 2 matching the lower tile 12 is provided in the middle of the fixing seat 1, the lower tile support block 2 is semicircular, and four dividing strips 3 are provided in the circumference of the lower tile support block 2, and the four dividing strips 3 evenly divide the lower tile support block 2 into five lower tile installation areas 4, and the width of each lower tile installation area 4 is the same as the width of the lower tile, and positioning holes 5 are provided on the fixing seat 1 on both sides of each lower tile installation area 4, and dividing blocks 6 corresponding to the dividing strips 3 are provided on the fixing seat 1 on both sides of each dividing strip 3, and the dividing blocks 6 separate the positioning holes 5:

[0034] Wherein, both ends of the fixing seat 1 on both sides of the lower tile support block 2 are provided with fixing holes 7;

[0035] Wherein, a bracket 8 for fixing the fixing seat 1 is installed in the fixing hole 7, and the other end of the bracket 8 is installed on the engine production line;

[0036] The bracket 8 is L-shaped, its horizontal plate is a rectangular frame and is fixedly installed below the fixing seat 1, and its vertical plate is provided with a mounting block 8-1 installed on the engine production line;

[0037] The horizontal plate of the bracket 8 is provided with a mounting hole 8-2, and the bolt passes through the fixing hole 7 of the fixing seat 1 and the mounting hole 8-2 of the bracket 8 to fix the fixing seat 1 and the bracket 8;

[0038] Wherein, the fixing seat 1 is a rectangular parallelepiped, and its width is the same as the length of the lower tile;

[0039] Wherein, a gap 9 is left between the lower tile support block 2 and the fixing seats 1 on both sides thereof;

[0040] Wherein, the positioning hole 5 is a through hole;

[0041] Wherein, both ends of the lower tile support block 2 are provided with a limit block 11, the height of the limit block 11 is higher than the dividing strip 3, and the limit block 11 can prevent the lower tile from falling off;

[0042] Among them, one end of each of the lower tile installation areas 4 is provided with a lubrication hole 10 that passes through the entire lower tile cover support block 2, and the outlet of the lubrication hole 10 is located on the lower surface of the fixing seat 1 at the other end of the lower tile installation area 4. The setting of the lubrication hole can complete the lubrication of the lower tile;

[0043] Among them, the five lower tile installation areas 4 are lower tile installation area No. 1, lower tile installation area No. 2, lower tile installation area No. 3, lower tile installation area No. 4 and lower tile installation area No. 5 respectively.

[0044] When the utility model is used, the mounting block 8-1 on the bracket vertical plate is fixed to the engine production line track by bolts, and then the entire fixing seat is installed on the engine production line. The worker only needs to install the lower tile 12 as shown in FIG. Figure 4 As shown in the sequence, they are placed on the No. 1 lower tile installation area, the No. 2 lower tile installation area, the No. 3 lower tile installation area, the No. 4 lower tile installation area and the No. 5 lower tile installation area, and then the lower tile cover 13 is placed as shown in the sequence. Figure 5 As shown, it is placed on the lower tile 12, and the specific structure is as follows Figure 6 As shown, without manual operation, the holes on the lower tile cover can be aligned with the holes on the lower tile, and aligned with the positioning holes on the fixing seat, and then the bolts are passed through the lower tile cover and the lower tile in turn to complete the installation between the lower tile 12 and the lower tile cover 13, and then placed on the engine tray for the next tooling. Since the lower tile installation area is numbered, the worker only needs to place it according to the number without checking, and the installation of five crankshaft tiles, that is, a set of tiles, can be completed at one time. Its usage status is shown in the figure. Figure 7 As shown, the working efficiency is improved.

[0045] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A crankshaft lower tile positioning and installation tool, characterized in that: The invention comprises a fixing seat (1), wherein a lower tile support block (2) matching with the lower tile is arranged in the middle of the fixing seat (1), the lower tile support block (2) is semicircular, and four dividing strips (3) are arranged in the circumference of the lower tile support block (2), the four dividing strips (3) evenly divide the lower tile support block (2) into five lower tile installation areas (4), the width of each lower tile installation area (4) is the same as the width of the lower tile, positioning holes (5) are arranged on the fixing seat (1) on both sides of each lower tile installation area (4), and dividing blocks (6) corresponding to the dividing strips (3) are arranged on the fixing seat (1) on both sides of each dividing strip (3), and the dividing blocks (6) separate the positioning holes (5).

2. A crankshaft lower pad positioning and installation tool according to claim 1, characterized in that: Both ends of the fixing seats (1) on both sides of the lower tile support block (2) are provided with fixing holes (7).

3. A crankshaft lower tile positioning and installation tool according to claim 2, characterized in that: A bracket (8) for fixing the fixing seat (1) is installed in the fixing hole (7), and the other end of the bracket (8) is installed on the engine production line.

4. A crankshaft lower tile positioning and installation tool according to claim 3, characterized in that: The bracket (8) is L-shaped, its horizontal plate is a rectangular frame and is fixedly installed below the fixing seat (1), and its vertical plate is provided with a mounting block (8-1) mounted on the engine production line.

5. A crankshaft lower pad positioning and installation tool according to claim 4, characterized in that: The horizontal plate of the bracket (8) is provided with a mounting hole (8-2), and bolts pass through the fixing hole (7) of the fixing seat (1) and the mounting hole (8-2) of the bracket (8) to fix the fixing seat (1) and the bracket (8).

6. A crankshaft lower pad positioning and installation tool according to any one of claims 1 to 5, characterized in that: The fixing seat (1) is a rectangular parallelepiped, and its width is the same as the length of the lower tile.

7. A crankshaft lower pad positioning and installation tool according to claim 6, characterized in that: A gap (9) is left between the lower tile support block (2) and the fixing seats (1) on both sides thereof, and the positioning holes (5) are through holes.

8. The crankshaft lower pad positioning and installation tool according to claim 6, characterized in that: Both ends of the lower tile support block (2) are provided with limit blocks (11), and the height of the limit blocks (11) is higher than the dividing strip (3).

9. A crankshaft lower pad positioning and installation tool according to claim 6, characterized in that: A lubrication hole (10) passing through the entire lower tile cover support block (2) is provided at one end of each lower tile installation area (4), and an outlet of the lubrication hole (10) is located on the lower surface of the fixing seat (1) at the other end of the lower tile installation area (4).

10. A crankshaft lower pad positioning and installation tool according to claim 6, characterized in that: The five lower tile installation areas (4) are respectively lower tile installation area No. 1, lower tile installation area No. 2, lower tile installation area No. 3, lower tile installation area No. 4 and lower tile installation area No. 5.

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