CN202985467U - Special mounting and demounting tool for cylinder sleeve of combustion engine - Google Patents

Abstract

The utility model relates to a special mounting and demounting tool for a cylinder sleeve of a combustion engine. The special mounting and demounting tool comprises a rotating handle (1), a horizontal support (2), an inside and outside reverse double-thread sleeve (4), a working lead screw (6), a lower pull plate (7-1) and an upper pull plate (7-2). The upper pull plate (7-2) is contacted with the lower edge of the cylinder sleeve (5), the working lead screw (6) penetrates through a positioning hole disposed at the center of the upper pull plate (7-2) to be in threaded connection with the inside and outside reverse double-thread sleeve (4), the inside and outside reverse double-thread sleeve (4) is connected with a nut disposed at the center of the horizontal support (2) through outer threads, and a square column arranged at the uppermost end of the inside and outside reverse double-thread sleeve (4) is connected with the rotating handle (1) in matched mode. Compared with the prior art, the special mounting and demounting tool has the advantages of being simple in structure, convenient to manufacture, simple and efficient to use, firm, durable, foldable, easy to store and capable of achieving installation of the cylinder sleeve.

Description

Special tools for removing and assembling cylinder liners of internal combustion engines

technical field

The utility model relates to a tool for removing a cylinder liner, in particular to a special tool for disassembling and assembling an internal combustion engine cylinder liner for vehicles and ships. the

Background technique

The piston reciprocates in the cylinder liner to output work to the crankshaft. After a period of normal operation, the cylinder liner will be worn or scratched, which will affect the sealing performance of the cylinder liner and affect the normal work of the internal combustion engine. Therefore, the internal combustion engine cylinder The sleeve is often maintained. When the internal combustion engine is maintained, we often encounter the disassembly and assembly of the cylinder liner, and the cylinder liner must be removed from the cylinder block. Searching the existing patent technology literature found that the following are related to this patent: the invention patent "special tool for cylinder liner removal of diesel engine" (application number: 200920229073.2) mainly provides a special tool for cylinder liner removal, and its tightening is not reliable enough. And the function is single, and the universal performance is poor. The invention patent "Cylinder Liner Removal Device" (Application No.: 98221572.X) mainly provides a special tool for quick disassembly of the cylinder liner, which has a single function, poor general performance and the lower hinged part is vulnerable. The invention patent "Cylinder liner quick remover" (application number: 200620066436.0) mainly provides a cylinder liner removal tool, which can only complete the disassembly process. The invention patent "Engine Cylinder Liner Removal Device" (Application No.: 201120038654.5) provides a cylinder liner removal tool, and its structural bearing is a wearing part with a single function. The invention patent "Cylinder Liner Removal Tool" (application number: 200510048179.9) provides a cylinder liner removal tool, which has a complex structure, is difficult to maintain and manage, and has poor general performance. the

In summary, it is found that the existing cylinder liner dismounting jig has problems such as complex structure, unreliable clamping, cumbersome operation, single function, heavy quality, and poor general performance, so it is difficult to have wide applicability. At present, the internal combustion engine repair industry at home and abroad mainly includes mechanical and hydraulic methods for repairing, dismantling and installing cylinder liners. Due to the complex structure of hydraulic tools, troublesome maintenance and management, and high cost, its application has not been promoted. It has been basically the traditional way to use hammers and steel drills to knock the lower port of the cylinder liner to withdraw the cylinder liner from the cylinder block. It is time-consuming and labor-intensive, and the cylinder liner is prone to deformation and damage under percussion. Therefore need to develop a kind of highly efficient and practical assembly and disassembly in one, the cylinder liner removal tool that has engineering use value. the

Utility model content

The positive effects of the utility model are: to provide a simple structure, easy to manufacture, simple to use, save time and effort, avoid damage to the cylinder liner and cylinder body, and can realize the installation of the cylinder liner, and at the same time, it is solid and durable, can be disassembled and easily Stored cylinder liner removal tool. the

The technical solution of the present utility model is: a special disassembly tool for the cylinder liner of an internal combustion engine, the tool includes a rotating handle, a horizontal bracket, an inner and outer reverse double thread sleeve, a working screw, an upper pull plate and a lower pull plate; The lower edge of the cylinder liner is in contact, and the working screw passes through the positioning hole in the center of the upper pull plate to be threaded with the inner and outer double-thread sleeves. The uppermost quadrangular column of the double-thread sleeve is connected with the rotating handle. the

In the utility model, the two sides of the upper and lower pull-down plates are processed with steps that match the cylinder liner, and the upper and lower pull-down plates are provided with eccentric guide grooves and center-positioned chamfers to ensure that the pull plate can have a space for inclination and ensure that the working Screw positioning guide. the

In the utility model, the center of the horizontal support is a hexagonal pit for placing and fixing nuts, and there are strip grooves on both sides that cooperate with the cylinder head fastening bolts. the

The utility model has the advantages of simple structure, convenient manufacture, simple use, time-saving and labor-saving, and can realize the installation of the cylinder liner, and has the advantages of being solid, durable and foldable for storage. It can be used for disassembling cylinder liners of various internal combustion engines. the

Description of drawings

Fig. 1 is the disassembly structure schematic diagram of the present utility model;

Fig. 2 is a schematic diagram of the installation structure of the present utility model;

Figure 3-1 is a front view of the structure of the horizontal bracket in Figure 1;

Figure 3-2 is a top view of the structure of the horizontal bracket in Figure 1;

Figure 4-1 is a structural front view of the rotating handle in Figure 1;

Figure 4-2 is a structural top view of the rotating handle in Figure 1;

Fig. 5 is a schematic structural view of the inner and outer reverse double-threaded sleeve in Fig. 1;

Figure 6-1 Front view of the pull plate structure in Figure 1;

Figure 6-2 Top view of the pull plate structure in Figure 1;

Fig. 7 is a schematic diagram of the structure of the working screw mandrel in Fig. 1;

In the figure: 1. Rotating handle, 2. Horizontal bracket, 3. Cylinder head fastening bolt, 4. Internal and external reverse double thread sleeve, 5. Cylinder liner, 6. Working screw rod, 7-1. Pull-down plate, 7- 2. Pull plate, 8. Strip groove, 9. Guide groove.

Detailed ways

The internal-combustion engine cylinder liner dismounting tool provided by the utility model is mainly composed of a rotating handle 1, a horizontal support 2, an inner and outer reverse double-threaded sleeve 4, a working screw mandrel 6, a pull-down plate 7-1 and a pull-up plate 7-2. the

Please refer to Figure 1, the working screw rod 6 is fixed in the internal and external reverse double-thread sleeve 4 by threads, and the internal and external reverse double-thread sleeve 4 is fixed on the nut of the horizontal support 2 by external threads, and the working screw rod 6 is pulled up The positioning through hole in the middle of the plate 7-2 is fixed on the lower edge of the cylinder liner 5. the

Described rotating handle 1 is common force adding device, can buy in the market. the

The horizontal bracket 2, the pull-down plate 7-1 and the pull-up plate 7-2 are made of ordinary steel plates. the

When using this tool to disassemble the cylinder liner, put the upper pull plate 7-2 into the cylinder liner with a slight inclination so that the end away from the guide groove is stuck on the lower edge of the cylinder liner, and pull the working screw rod 6 upward, and the working screw rod 6 is in the guide groove Under the effect of sliding to the positioning through hole of the pull-up plate 7-2, then the horizontal bracket 2 is fixed on the cylinder head fastening bolt 3, and the cylinder liner can be disassembled from the cylinder block by turning the handle 1. the

When using this tool to install the cylinder liner, first place the cylinder liner 5 in the cylinder block until it cannot be placed down. The lower edge of the cylinder block pulls the working screw rod 6 upward, and the working screw rod 6 slides into the positioning through hole of the pull-down plate 7-1 under the action of the guide groove, and then the upper pull-down plate 7-2 is stuck on the top of the cylinder liner. edge, and then turn the handle 1 until the upper edge of the cylinder liner 5 is flush with the upper edge of the cylinder block. the

Briefly describe the working process of the present utility model below in conjunction with accompanying drawing. the

Before using this tool to disassemble the cylinder liner, first assemble the upper pull plate 7-2, the working screw rod 6, the inner and outer reverse double threaded sleeves 4 and the horizontal bracket 2. The specific assembly is as follows: put the working screw rod 6 through the pull plate 7 -2 Make the pull-up plate 7-2 and the working screw 6 have a small inclination angle, fix the inner and outer double-threaded sleeve 4 on the horizontal support 2 through threads, and then connect the working screw 6 and the inner and outer double-threaded sleeve 4 connected together by threads. the

When using this tool to disassemble the cylinder liner, push the upper pull plate 7-2 deep into the cylinder liner 5, clamp the upper end of the upper pull plate 7-2 on the lower edge of the cylinder liner, and pull the working screw 6 upwards, at this time, the upper pull plate 7 The other end of -2 will be stuck on the lower edge of the cylinder liner 5, then adjust the height of the horizontal bracket 2 so that it can just be fixed on the cylinder liner fastening bolt 3, then install the turning handle 1, turn the handle clockwise, Cylinder liner 5 will rise steadily until pulled out under the effect of pull-up plate 7-2. the

Before using this tool to install the cylinder liner, first put the cylinder liner 5 into the cylinder block until the downward movement cannot be continued, and then assemble the upper and lower pull plates, the working screw 6 and the inner and outer reverse double-threaded sleeves 4, The specific assembly is as follows, the working screw mandrel 6 passes through the pull-down plate 7-1 and the upper drawing plate 7-2 respectively, and then the working screw mandrel 6 is connected with the inner and outer reverse double-threaded sleeves 4 by threads. the

When using this tool to install the cylinder liner, slightly tilt the pull-down plate 7-1 deep into the cylinder liner 5, clamp the upper end of the pull-down plate 7-1 on the lower edge of the cylinder block, and pull the working screw 6 upwards, at this time the pull-down plate 7-1 The other end of 1 will also be stuck on the lower edge of the cylinder block, then adjust the distance between the pull-up plate 7-2 and the pull-down plate 7-1, and the pull-up plate 7-2 will be stuck on the upper edge of the cylinder liner 5, this Rotate the handle 1 when installed, turn the handle 1 counterclockwise, and the cylinder liner 5 will steadily descend under the effect of the pull-up plate 7-2 until the upper edge of the cylinder liner is flush with the cylinder body. the

Claims (3)

1. A special disassembly and assembly tool for the cylinder liner of an internal combustion engine, characterized in that the tool includes a rotating handle (1), a horizontal support (2), an inner and outer reverse double thread sleeve (4), a working screw rod (6), a pull-down Plate (7-1) and pull-up plate (7-2); pull-up plate (7-2) is in contact with the lower edge of the cylinder liner (5), and the working screw (6) passes through the pull-up plate (7-2) The positioning hole in the center is threadedly connected with the inner and outer reversed double-threaded sleeve (4), the outer thread of the inner and outer reversed double-threaded sleeve (4) is connected with the nut in the center of the horizontal support (2), and the inner and outer reversed double-threaded sleeve (4) ) The uppermost square column is connected with the rotating handle (1). 2. A special dismounting tool for a cylinder liner of an internal combustion engine according to claim 1, characterized in that: both sides of the upper and lower pull-down plates are processed with steps that cooperate with the cylinder liner, and the upper and lower pull-down plates are provided with eccentric guide grooves ( 9) and the chamfering of the central positioning to ensure that the pull plate can have a tilting space and ensure the positioning and guidance of the working screw (6). 3. A special disassembly tool for cylinder liners of internal combustion engines according to claim 1, characterized in that the center of the horizontal bracket (2) is a hexagonal pit for placing and fixing nuts, and there are holes on both sides for fastening with the cylinder head The bar groove (8) that the bolt (3) fits into.

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