阅读说明：本技术 一种连杆活塞组件安装工具及安装方法 (Connecting rod piston assembly mounting tool and mounting method ) 是由 陈伟文 罗天伦 李家林 于 2020-06-03 设计创作，主要内容包括：本发明公开了一种连杆活塞组件安装工具及安装方法,涉及发动机技术领域,其中,连杆活塞组件安装工具包括安装架,具有用于与曲轴固定的第一端部以及用于与连杆大端轴承固定的第二端部,以使连杆大端轴承在曲轴上不发生滑动或转动；以及导向体,用于与连杆活塞组件中的连杆杆身连接,所述导向体安装有至少一个锁紧组件,所述锁紧组件包括用于与连杆杆身连接的导向体固定杆,所述导向体固定杆下端具有使所述导向体向连杆杆身底端抵靠的夹紧块。当需要倾斜安装连杆活塞组件时,本发明的连杆活塞组件安装工具能够保证连杆杆身又不会刮伤缸套内壁。(The invention discloses a connecting rod piston assembly mounting tool and a mounting method, and relates to the technical field of engines, wherein the connecting rod piston assembly mounting tool comprises a mounting frame, a connecting rod piston assembly mounting frame and a connecting rod assembly mounting frame, wherein the mounting frame is provided with a first end part used for being fixed with a crankshaft and a second end part used for being fixed with a connecting rod big end bearing, so that the connecting rod big end bearing does not slide or rotate on the crankshaft; the guide body is used for being connected with a connecting rod body in the connecting rod piston assembly, at least one locking assembly is installed on the guide body, the locking assembly comprises a guide body fixing rod used for being connected with the connecting rod body, and a clamping block enabling the guide body to abut against the bottom end of the connecting rod body is arranged at the lower end of the guide body fixing rod. When the connecting rod piston assembly needs to be installed in an inclined mode, the connecting rod piston assembly installation tool can ensure that the connecting rod body cannot scratch the inner wall of the cylinder sleeve.)

1. A connecting rod piston assembly mounting tool which characterized in that: comprises that

A mounting bracket (30) having a first end portion (31) for being fixed with the crankshaft (20) and a second end portion (32) for being fixed with the connecting rod big end bearing (13) so that the connecting rod big end bearing (13) does not slide or rotate on the crankshaft (20); and

the guide body (40), the guide body (40) passes through at least one locking subassembly (50) and fixes in connecting rod body (121) bottom.

2. The connecting rod piston assembly installation tool of claim 1, wherein: the upper end face of the guide body (40) is provided with a boss (41) which is clamped into a counter bore at the bottom of the connecting rod body (121).

3. The connecting rod piston assembly installation tool of claim 2, wherein: the locking assembly (50) comprises a guide body fixing rod (51), a fixing cap (56) fixed at the upper end of the guide body fixing rod (51) and a clamping block (52) fixed at the lower end of the guide body fixing rod (51), wherein a clamping space for clamping the guide body (40) and the bottom end of the connecting rod body (121) is formed between the fixing cap (56) and the clamping block (52).

4. A connecting rod piston assembly installation tool according to claim 3, wherein: the clamping block (52) is long, the guide body (40) is provided with a long hole (42) for the clamping block (52) to pass through, and the clamping block (52) passes through the long hole (42) and then rotates the guide body fixing rod (51) so that the clamping block (52) is pressed against the lower end face of the guide body (40).

5. The connecting rod piston assembly installation tool of claim 4, wherein: the guide body fixing rod (51) is provided with a second bolt (57), the guide body fixing rod (51) is sleeved with a pressure spring (58), the top of the pressure spring (58) is connected to the second bolt (57), and the outer diameter of the pressure spring (58) is larger than the width of the strip hole (42).

6. The connecting rod piston assembly installation tool of claim 5, wherein: the clamping block (52) is fixed to the guide body (40) by means of at least one set screw (59).

7. The connecting rod piston assembly installation tool of claim 6, wherein: the lower end face of the guide body (40) is provided with a counter bore (43) for placing each clamping block (52).

8. A connecting rod piston assembly installation tool according to claim 3, wherein: the bottom of the fixing cap (56) is also provided with a limiting seat body (53), and the limiting seat body (53) is connected to the guide body fixing rod (51) through a first bolt (55).

9. The connecting rod piston assembly installation tool of any one of claims 1 or 8, wherein: first end (31) with second end (32) all is provided with coupling assembling, coupling assembling includes fastening bolt (331) and adjusting bolt (332), first end (31) with confession has all been seted up in second end (32) through-hole (333) that fastening bolt (331) passed, first end (31) with second end (32) all is provided with the confession nut (334) of adjusting bolt (332) screw in.

10. A connecting rod piston assembly mounting method, characterized by using the connecting rod piston assembly mounting tool according to any one of claims 1 to 9, comprising the steps of:

s1, fixing the first end part (31) of the mounting frame (30) on the crankshaft (20), fixing the second end part (32) of the mounting frame (30) on the connecting rod big end bearing (13) so that the connecting rod big end bearing (13) does not slide or rotate on the crankshaft (20), and connecting the guide body (40) to the bottom end of the connecting rod body (121);

s2, hoisting the connecting rod piston assembly (12) and placing the connecting rod piston assembly into the cylinder sleeve (11), enabling the guide body (40) and the connecting rod piston assembly (12) to slide down against lubricating oil in the cylinder sleeve (11), removing the guide body (40) after the guide body (40) slides out of the cylinder sleeve (11), and connecting a connecting rod body (121) of the connecting rod piston assembly (12) with the connecting rod big-end bearing (13);

s3, removing the mounting rack (30).

Technical Field

The invention relates to the technical field of engines, in particular to a connecting rod piston assembly mounting tool and a connecting rod piston assembly mounting method.

Background

The diesel engine is composed of a plurality of mechanism parts, wherein a connecting rod piston assembly is an important part, the connecting rod piston assembly of each cylinder is assembled, lifted and installed in a cylinder sleeve and connected with a connecting rod big end bearing positioned at a crankshaft end, the installation process of the connecting rod piston assembly in an in-line type is simple, a lifting tool is installed on the connecting rod piston assembly, the connecting rod piston assembly is vertically lifted to a corresponding position of a rack and placed in the cylinder sleeve, and a connecting rod body is well butted with the connecting rod big end bearing. For the connecting rod piston assembly of the V-shaped diesel engine, the lifting tool is required to be installed on the connecting rod piston assembly, and simultaneously, the lifting tool is lifted to be inclined to a certain angle to meet the installation requirement, and the connecting rod piston assembly is installed in an inclined mode, so that the connecting rod body of the connecting rod piston assembly can easily scratch the inner wall of the cylinder sleeve. The common installation method for the V-shaped diesel engine is as follows: the machine body fixing base can rotate, the relative installation position of the inclined connecting rod piston assembly is changed into vertical, and the installation is convenient. However, this mounting method leads to increased costs due to the addition of an auxiliary rotating mechanism.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the above-mentioned problems in the prior art. Therefore, the embodiment of the invention provides a connecting rod piston assembly mounting tool, which can mount a connecting rod piston assembly in an inclined mode, and a connecting rod body cannot scratch the inner wall of a cylinder sleeve.

The embodiment of the invention also provides a connecting rod piston assembly installation method.

According to an embodiment of the first aspect of the invention, a connecting rod piston assembly mounting tool is provided, which comprises a mounting frame, a connecting rod big end bearing and a connecting rod large end bearing, wherein the mounting frame is provided with a first end part used for being fixed with a crankshaft and a second end part used for being fixed with the connecting rod big end bearing, so that the connecting rod big end bearing does not slide or rotate on the crankshaft; and the guide body is connected with the bottom end of the rod body through at least one locking component.

According to the embodiment of the first aspect of the invention, the upper end face of the guide body is provided with a boss to be clamped into a counter bore at the bottom of the connecting rod body.

According to the embodiment of the first aspect of the invention, the locking assembly further comprises a fixing cap fixed at the upper end of the guide body fixing rod, and a clamping space for clamping the guide body and the bottom end of the connecting rod body (121) is arranged between the fixing cap and the clamping block.

According to the embodiment of the first aspect of the present invention, the clamping block is in an elongated shape, the guide body is provided with an elongated hole through which the clamping block passes, and the clamping block rotates the guide body fixing rod after passing through the elongated hole, so that the clamping block is pressed against the lower end face of the guide body.

According to the embodiment of the first aspect of the present invention, the guide body fixing rod is provided with a second bolt located below the first bolt, the guide body fixing rod is sleeved with a pressure spring, the top of the pressure spring is connected to the second bolt, and the outer diameter of the pressure spring is greater than the width of the elongated hole.

According to an embodiment of the first aspect of the invention, the clamping block is fixed to the guide body by at least one set screw.

According to an embodiment of the first aspect of the present invention, a counter bore is provided on a lower end surface of the guide body, and each clamping block is placed in the counter bore.

According to the embodiment of the first aspect of the present invention, the bottom of the fixing cap is further provided with a limiting seat body, and the limiting seat body is connected to the guide body fixing rod through a first plug pin.

According to an embodiment of the first aspect of the present invention, each of the first end portion and the second end portion is provided with a connecting assembly, the connecting assembly includes a fastening bolt and an adjusting bolt, each of the first end portion and the second end portion is provided with a through hole for the fastening bolt to pass through, and each of the first end portion and the second end portion is provided with a nut for the adjusting bolt to screw in.

According to an embodiment of a second aspect of the present invention, there is provided a connecting rod piston assembly mounting method using the connecting rod piston assembly mounting tool according to the embodiment of the first aspect of the present invention, including the steps of:

s1, fixing the first end of the mounting rack on the crankshaft, fixing the second end of the mounting rack on the connecting rod big end bearing, so that the connecting rod big end bearing does not slide or rotate on the crankshaft, and connecting the guide body to the bottom end of the connecting rod body;

s2, hoisting the connecting rod piston assembly and placing the connecting rod piston assembly into the cylinder sleeve, enabling the guide body and the connecting rod piston assembly to slide down along with lubricating oil in the cylinder sleeve, removing the guide body after the guide body slides out of the cylinder sleeve, and connecting a connecting rod body of the connecting rod piston assembly with a connecting rod big-end bearing;

and S3, removing the mounting rack.

Based on the technical scheme, the embodiment of the invention at least has the following beneficial effects: among the above-mentioned scheme, through the design mounting bracket to it is fixed between connecting rod big end bearing and the bent axle, make connecting rod big end bearing not take place to slide or rotate on the bent axle, in addition, be connected with the guide body in connecting rod body bottom of connecting rod piston assembly, thereby make when putting piston assembly into the cylinder liner, guide body perisporium and cylinder liner inner wall contact, connecting rod body can not scratch the cylinder liner inner wall. When the connecting rod piston assembly needs to be installed in an inclined mode, the connecting rod piston assembly installation tool can ensure that the connecting rod body cannot scratch the inner wall of the cylinder sleeve.

Drawings

In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures are only some embodiments of the invention, not all embodiments, and that a person skilled in the art can also derive other designs and figures from them without inventive effort.

FIG. 1 is a schematic structural diagram of a mounting and dismounting state of a V-type engine in a mounting and dismounting process according to an embodiment of the invention;

FIG. 2 is a perspective view of an embodiment of the present invention applied to the installation of a connecting rod piston assembly;

FIG. 3 is an enlarged view of a portion of circle A of FIG. 2;

FIG. 4 is a side view of an embodiment of the present invention applied to a connecting rod piston assembly installation;

FIG. 5 is a cross-sectional view B-B of FIG. 4;

FIG. 6 is a cross-sectional view of a guide body coupled to a connecting rod shaft in an embodiment of the present invention;

FIG. 7 is an elevation view of a guide body coupled to a connecting rod body with a locking assembly in partial cross-sectional representation in accordance with an embodiment of the present invention;

FIG. 8 is a perspective view of a mounting bracket in an embodiment of the invention;

FIG. 9 is a perspective view of a guide body in an embodiment of the present invention;

FIG. 10 is a front view of a guide body in an embodiment of the present invention;

figure 11 is a perspective view of a locking assembly in an embodiment of the invention.

Detailed Description

Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

In the description of the present invention, it is to be understood that the positional or orientational relationships, such as those indicated by center, longitudinal, lateral, length, width, thickness, upper, lower, front, rear, left, right, vertical, horizontal, top, bottom, inner, outer, clockwise, counterclockwise, axial, radial, circumferential, and the like, are based on the positional or orientational relationships shown in the drawings and are for convenience of description and simplicity of description only, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be considered as limiting.

In the description of the present invention, the meaning of several is one or more, the meaning of a plurality is two or more, and larger, smaller, larger, etc. are understood as excluding the present number, and larger, lower, inner, etc. are understood as including the present number unless specifically defined otherwise. Furthermore, the descriptions of first and second are only for the purpose of distinguishing between technical features, and are not to be construed as indicating or implying relative importance or implying any number or order of indicated technical features.