Error-proof and leakage-proof device for press fitting of cylinder body bushing and mounting method

Abstract

The invention discloses a mistake-proof and leakage-proof device for press fitting of a cylinder body lining and an installation method. The mistake-proof and leakage-proof device for press fitting of the cylinder body bushing comprises a pressing head, wherein a mounting part for sleeving a bushing to be pressed is arranged at the end part of the pressing head; a mounting groove is formed in the side wall of the mounting part, an elastic piece is arranged in the mounting groove, one end of the elastic piece is fixed to the bottom of the mounting groove, the other end of the elastic piece is a free end, and a positioning top bead is fixedly mounted at the free end of the elastic piece; the side wall of the mounting part is provided with an alignment detection hole which coincides with the position of an oil hole in the bushing to be pressed, and an anti-dislocation sensor is mounted at the alignment detection hole; the side wall of the installation part is further provided with a neglected-installation-preventing detection hole, and a neglected-installation-preventing sensor is installed at the neglected-installation-preventing detection hole. The device is simple and reasonable in structural design, and can simply, conveniently, accurately, quickly and automatically identify the installation direction of the bushing, the position of the bushing oil hole and whether the bushing is neglected in the bushing press-fitting process.

Description

Technical Field

[0001] The invention belongs to the technical field of engine assembly, and particularly relates to a cylinder liner press-fit error-proof and leakage-proof device and an installation method. Background Art

[0002] When the bushing is press-fitted into the camshaft hole of the engine cylinder block (such as the Weichai WP6 cylinder block), the overlap between the bushing oil hole and the camshaft oil hole is required to be ≥ 2 / 3, and the bushing needs to be positioned to ensure the overlap of the oil holes. Currently, during the press-fitting process, the operator uses his eyes to check whether the installation direction of the bushing and the position of the oil hole coincide. The press-fitting equipment cannot automatically identify the position of the oil hole, which can easily cause a large offset distance between the bushing oil hole and the camshaft hole, affecting the lubrication oil circuit of the entire machine; and during the bushing press-fitting process, the operator sometimes misses the bushing, and the press-fitting equipment cannot identify whether all the bushings have been press-fitted, resulting in defective products flowing to the customer. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a cylinder liner pressing error and leakage prevention device which can automatically identify the installation direction of the liner, the position of the liner oil hole and whether the liner is missing during the liner pressing process in a relatively simple, light, accurate and fast manner.

[0004] In order to solve the above technical problems, the technical solution of the present invention is: a cylinder liner press-fitting error-proof and leakage-proof device comprises a press head, and the end of the press head is provided with a mounting portion for fitting the liner to be pressed; A mounting groove is provided on the side wall of the mounting portion, an elastic member is provided in the mounting groove, one end of the elastic member is fixed to the bottom of the mounting groove, the other end of the elastic member is a free end, and a positioning top bead is fixedly installed on the free end of the elastic member; The side wall of the mounting portion is provided with an alignment detection hole which coincides with the oil hole position on the bushing to be pressed, and an anti-misalignment sensor is installed at the alignment detection hole; the side wall of the mounting portion is also provided with an anti-leakage detection hole, and an anti-leakage sensor is installed at the anti-leakage detection hole.

[0005] As a preferred technical solution, the anti-misalignment sensor and the anti-missing sensor are both photosensitive sensors.

[0006] As a preferred technical solution, the signal output ends of the anti-misalignment sensor and the anti-missing installation sensor are respectively connected to alarm lights.

[0007] As a preferred technical solution, a protective sleeve is installed at the installation groove, and the protective sleeve is interference fit with the installation groove.

[0008] As a preferred technical solution, the elastic member is a spring.

[0009] The present invention also provides an installation method for the cylinder liner press-fit error-proofing and leakage-proofing device described above, comprising the following steps: S1. Install the bushing on the mounting part of the pressure head, and use a positioning ball to locate one of the oil holes of the bushing; S2. When the bushing is press-fitted, the spring in the positioning bead is compressed. After the bushing is installed in place, the positioning bead positions the bushing under the elastic force of the spring, thereby aligning the position of the bushing oil hole and ensuring the front and rear installation direction of the bushing; S3. If the bushing is installed in the correct position, the anti-misalignment sensor will coincide with the position of the other oil hole of the bushing and can sense the exact position of the bushing oil hole. If the bushing is installed in the wrong position, the anti-misalignment sensor will alarm, and the alarm light will light up or flash, warning the operator to reinstall the bushing. The anti-missing sensor can sense whether the bushing is missing. If the bushing is missing, the anti-missing sensor will alarm, and the alarm light will light up or flash, reminding the operator to reinstall the bushing.

[0010] Due to the adoption of the above technical solution, the present invention has at least the following beneficial effects: (1) Install the bushing to be pressed on the installation part of the pressure head, and use a positioning bead to position one of the oil holes of the bushing. When the bushing is pressed, the elastic part in the positioning bead is compressed. After the bushing is installed in place, the positioning bead positions the bushing under the elastic force of the elastic part, thereby aligning the position of the bushing oil hole and ensuring the front and rear installation direction of the bushing; if the bushing is installed in the correct position, the anti-misalignment sensor will coincide with the position of the other oil hole of the bushing and can sense the exact position of the bushing oil hole; if the bushing is installed in the wrong position, the anti-misalignment sensor will alarm and warn the operator to reinstall the bushing; and the anti-missing sensor can sense whether the bushing is missing. If the bushing is missing, the anti-missing sensor will alarm and remind the operator to reinstall the bushing; the installation method is simple, quick and convenient.

[0011] (2) The design of this press-fit error-proofing and leakage-proofing device is simple and reasonable. It can automatically detect whether the bushing is missing or misplaced. It can automatically identify the installation direction of the bushing, the position of the bushing oil hole, and whether the bushing is missing during the bushing press-fitting process in a relatively simple, light, accurate, and fast manner, thereby reducing the labor intensity of the operator, improving the production rhythm, stabilizing the product quality, and preventing defective products from being circulated to the customer end. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The following drawings are intended only to illustrate and explain the present invention, and are not intended to limit the scope of the present invention. Figure 1 is a schematic structural diagram of an embodiment of the present invention; Figure 2 yes Figure 1 Schematic diagram of the cross section along the CC direction; Figure 3It is a state reference diagram of the bushing when being installed according to an embodiment of the present invention.

[0013] In the figure: 1-pressure head; 11-installation part; 12-installation groove; 13-alignment detection hole; 14-anti-leakage detection hole; 2-bushing; 3-spring; 4-positioning bead; 5-anti-misalignment sensor; 6-anti-leakage sensor; 7-protective cover. DETAILED DESCRIPTION

[0014] The present invention is further described below in conjunction with the accompanying drawings and examples. In the following detailed description, certain exemplary embodiments of the present invention are described only by way of illustration. Needless to say, those of ordinary skill in the art will recognize that the described embodiments may be modified in various ways without departing from the spirit and scope of the present invention. Therefore, the drawings and description are illustrative in nature and are not intended to limit the scope of protection of the claims.

[0015] like Figures 1 to 3 As shown, the cylinder liner press-fit error-proof and leak-proof device comprises a press head 1, the end of the press head 1 is provided with a mounting portion 11 for fitting the liner to be pressed, and the mounting portion 11 is a sleeve structure; A mounting groove 12 is provided on the side wall of the mounting portion 11, and a spring 3 is provided in the mounting groove 12. One end of the spring 3 is fixed to the bottom of the mounting groove 12, and the other end of the spring 3 is a free end. A positioning top bead 4 is fixedly installed on the free end of the spring 3. Of course, the spring 3 can also be replaced by other elastic parts, which should all fall within the protection scope of the present invention.

[0016] The side wall of the mounting portion 11 is provided with an alignment detection hole 13 which coincides with the oil hole position on the bushing 2 to be pressed, and an anti-misalignment sensor 5 is installed at the alignment detection hole 13; the side wall of the mounting portion 11 is also provided with an anti-missing detection hole 14, and an anti-missing sensor 6 is installed at the anti-missing detection hole 14. The anti-misalignment sensor 5 and the anti-missing sensor 6 are preferably photosensitive sensors.

[0017] To remind the operator conveniently, the signal output ends of the anti-misalignment sensor 5 and the anti-missing installation sensor 6 can be connected to alarm lights respectively. When the bushing is installed in the wrong position or is missing, the corresponding sensors send signals for warning.

[0018] In order to increase the service life of the pressure head, a protective sleeve 7 made of wear-resistant material is installed at the installation groove 12, and the protective sleeve 7 is interference-fitted with the installation groove 12.

[0019] refer to Figure 3 , the installation method is as follows: S1, install the bushing 2 at the mounting portion 11 of the pressure head 1, and position one of the oil holes of the bushing 2 with a positioning ball 4; S2. When the bushing is press-fitted, the spring 3 in the positioning bead 4 is compressed. After the bushing 2 is installed in place, the positioning bead 4 positions the bushing under the elastic force of the spring 3, thereby aligning the position of the bushing oil hole and ensuring the front-to-back installation direction of the bushing 2. S3. If the bushing 2 is installed in the correct position, the anti-misalignment sensor 5 will coincide with the position of another oil hole of the bushing 2 and can sense the exact position of the bushing oil hole; if the bushing 2 is installed in the wrong position, the anti-misalignment sensor 5 will alarm, and the alarm light will light up or flash, warning the operator to reinstall the bushing; and the anti-missing sensor 6 can sense whether the bushing is missing. If the bushing 2 is missing, the anti-missing sensor 6 will alarm, and the alarm light will light up or flash, reminding the operator to reinstall the bushing.

[0020] The structural design of the present invention is simple and reasonable, and can automatically detect whether the bushing is missing or misplaced. It can relatively simply, lightly, accurately and quickly automatically identify the installation direction of the bushing, the position of the bushing oil hole, and whether the bushing is missing during the bushing press-fitting process, thereby reducing the labor intensity of the operator, improving the production rhythm, stabilizing the product quality, and preventing defective products from being circulated to the client.

[0021] The above description is only an illustrative embodiment of the present invention and is not intended to limit the scope of the present invention. Any equivalent changes and modifications made by any person skilled in the art without departing from the concept and principle of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A cylinder liner press-fit error-proof and leak-proof device, including a press head, characterized in that: The end of the pressure head is provided with a mounting portion for fitting the bushing to be pressed; A mounting groove is provided on the side wall of the mounting portion, an elastic member is provided in the mounting groove, one end of the elastic member is fixed to the bottom of the mounting groove, the other end of the elastic member is a free end, and a positioning top bead is fixedly installed on the free end of the elastic member; The side wall of the mounting portion is provided with an alignment detection hole which coincides with the oil hole position on the bushing to be pressed, and an anti-misalignment sensor is installed at the alignment detection hole; the side wall of the mounting portion is also provided with an anti-leakage detection hole, and an anti-leakage sensor is installed at the anti-leakage detection hole.

2. The cylinder liner press-fit error-proofing and leakage-proofing device according to claim 1, characterized in that: The anti-misalignment sensor and the anti-missing sensor are both photosensitive sensors.

3. The cylinder liner press-fit error-proofing and leakage-proofing device according to claim 1, characterized in that: The signal output ends of the anti-misalignment sensor and the anti-missing installation sensor are respectively connected to alarm lights.

4. The cylinder liner press-fit error-proofing and leakage-proofing device according to claim 1, characterized in that: A protective sleeve is installed at the installation groove, and the protective sleeve is interference-fitted with the installation groove.

5. The cylinder liner press-fitting error-proofing and leakage-proofing device according to any one of claims 1 to 4, characterized in that: The elastic member is a spring.

6. The installation method of the cylinder liner press-fitting error-proofing and leakage-proofing device according to claim 5 is characterized in that: The steps include: S1. Install the bushing on the mounting part of the pressure head, and use a positioning ball to locate one of the oil holes of the bushing; S2. When the bushing is press-fitted, the spring in the positioning bead is compressed. After the bushing is installed in place, the positioning bead positions the bushing under the elastic force of the spring, thereby aligning the position of the bushing oil hole and ensuring the front and rear installation direction of the bushing; S3. If the bushing is installed in the correct position, the anti-misalignment sensor will coincide with the position of the other oil hole of the bushing and can sense the exact position of the bushing oil hole. If the bushing is installed in the wrong position, the anti-misalignment sensor will alarm, and the alarm light will light up or flash, warning the operator to reinstall the bushing. The anti-missing sensor can sense whether the bushing is missing. If the bushing is missing, the anti-missing sensor will alarm, and the alarm light will light up or flash, reminding the operator to reinstall the bushing.

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