CN212044479U - Novel engine main bearing cap manual expansion device - Google Patents

Abstract

The utility model relates to an engine auxiliary assembly field particularly, relate to a novel manual expansion of engine main bearing cap device, it includes the skeleton, fix the fixed handle in the skeleton upper end, articulate the activity handle on the skeleton, the transmission shaft of being connected with activity handle front end and connect the piece that expands in the transmission shaft bottom, the skeleton lower extreme still is fixed with the positioning fixture block, the position of positioning fixture block is higher than the piece that expands, this novel manual expansion device simple structure that relates, convenient operation, low in manufacturing cost, solve among the prior art because the cooperation is inseparable between main bearing cap and the cylinder body, dismantle the difficulty, after automatic dismounting device became invalid, there is not the supplementary dismantlement of emergent manual extracting tool, bare-handed dismantlement process work efficiency is low, cause the part to damage easily, and there is the problem of potential safety hazard etc.

Description

Novel engine main bearing cap manual expansion device

Technical Field

The utility model relates to an engine auxiliary assembly field particularly, relates to a novel manual device that rises of engine main bearing cap.

Background

Before the engine assembly production line is on line with the cylinder body, the main bearing cap is fixed on the cylinder body by bolts (because the processing line fixes the main bearing cap on the cylinder body by bolts before processing the main bearing hole in order to ensure the coaxiality of the main bearing hole when the cylinder body is processed, then the main bearing hole is processed, and each tile cap can not be exchanged, otherwise the crankshaft can be locked after being installed and can not rotate), because the main bearing cap and the cylinder body are tightly matched and belong to the interference fit state, the disassembly is difficult, the prior art generally adopts an automatic expansion device, however, after the automatic spreading device fails, the automatic spreading device is not detached with the assistance of a related manual detaching tool, and is difficult to detach by bare hands, inconvenient, easy to damage components and potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a novel manual device that rises of engine main bearing cap to solve among the prior art because the cooperation is inseparable between main bearing cap and the cylinder body, dismantle the difficulty, after automatic disassembling equipment became invalid, do not have the supplementary dismantlement of emergent manual extracting tool, bare-handed dismantlement process work efficiency is low, cause the part to damage easily, and has the problem of potential safety hazard etc..

In order to achieve the above object, the utility model adopts the following technical scheme:

the utility model provides a novel manual opening of expanding of engine main bearing cap device, its includes the skeleton, fixes the fixed handle in the skeleton upper end, articulates the movable handle on the skeleton, the transmission shaft of being connected with movable handle front end and connects the piece that expands in the transmission shaft bottom, and the skeleton lower extreme still is fixed with the location fixture block, and the location fixture block is located the piece upper end that expands.

Furthermore, the expansion block and the positioning fixture block are semi-cylindrical, the cambered surface of the expansion block faces downwards, and the cambered surface of the positioning fixture block faces upwards.

Further, still install the support on the skeleton, demountable installation has the locating pin on the support.

Furthermore, the bracket, the expansion block and the positioning fixture block are positioned on the same side of the framework.

Furthermore, a return spring is further installed at the lower end of the transmission shaft, one end of the return spring is connected with the transmission shaft, and the other end of the return spring is fixed on the framework.

Furthermore, the transmission shaft is also covered with a protective shell, and the protective shell is fixedly connected to the framework.

Furthermore, the framework is provided with a long strip hole, and the movable handle moves in the long strip hole.

The utility model discloses following beneficial effect has:

the novel manual expansion device for the main bearing cap of the engine is simple in structure, convenient to operate and low in manufacturing cost, the main bearing cap can be jacked up in a time-saving and labor-saving mode by manually rotating the movable handle, and the universality is high; the expansion device is internally provided with a return spring, after separation is finished, the movable handle is loosened, the expansion block and the positioning clamp can automatically reset, and the expansion device is convenient to take down from the crankshaft hole; demountable installation has the locating pin on the support, and effective fixed device and the main bearing cap that rises prevent that the main bearing cap from dropping in dismantling the separation process, damaging the part or accidentally injuring operating personnel.

Drawings

FIG. 1 is a schematic view of the working state of the present invention;

FIG. 2 is a schematic view of the expansion block and the positioning block in a closed state;

FIG. 3 is a schematic view of the expansion block and the positioning fixture block in an expanded state;

FIG. 4 is a side view of the present invention;

wherein the figures include the following reference numerals: 1. a cylinder block; 2. a main bearing cap; 3. a framework; 4. fixing a handle; 5. a movable handle; 6. a drive shaft; 7. an expansion block; 8. positioning a fixture block; 9. a support; 10. positioning pins; 11. a return spring; 12. and (4) protecting the shell.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1-4, a novel manual opening of main bearing cap of engine device, it includes skeleton 3, the fixed handle 4 is installed to the skeleton upper end, activity handle 5 articulates on the skeleton, the activity handle is located the fixed handle lower extreme, the front end of activity handle is connected with transmission shaft 6, half cylindrical opening piece 7 that rises is installed to the transmission shaft bottom, location fixture block 8 is installed to the skeleton bottom, the shape of location fixture block also is half cylindrical, the cambered surface of opening the piece is down, location fixture block cambered surface is up, the cross section radius size of opening the piece and the cross section radius size of location fixture block all are less than the bent axle hole radius on the main bearing cap. The framework is provided with a long strip hole, and the movable handle moves in the long strip hole.

When the cylinder is used, the expansion block and the positioning fixture block are clamped into a crankshaft hole between the cylinder body 1 and the main bearing cap, the expansion block is positioned in a semicircular hole of the cylinder body, the positioning fixture block is positioned in a semicircular hole of the main bearing cap, and the size of the cross section of a cylinder formed by the expansion block and the positioning fixture block is smaller than that of the crankshaft hole; the lifting stroke of the spreading device is larger than the size difference. Pressing the fixed handle by a hand, rotating the movable handle upwards to drive the transmission shaft connected to the front end of the movable handle to move downwards along the framework, and abutting the expansion block against the lower end of the crankshaft hole under the action of the transmission shaft; because the cylinder body is fixed, the transmission shaft cannot move downwards, the framework moves upwards under the reaction of the transmission shaft, the main bearing cap is jacked upwards under the action of the positioning fixture block, and the main bearing cap is separated from the cylinder body.

The framework is also provided with a bracket 9, and the bracket, the expansion block and the positioning fixture block are positioned at the same side of the framework. The bracket is detachably provided with a positioning pin 10, the position of the positioning pin corresponds to a positioning hole at the upper end of the main bearing cap, when the positioning pin is used, the expansion block and the positioning fixture block are positioned in the crankshaft hole along the upper edge of the crankshaft hole, when the positioning pin is positioned right above the positioning hole of the main bearing cap, the expansion device falls down, the expansion block and the positioning fixture block move downwards in the crankshaft hole, and the positioning pin is inserted into the positioning hole; the locating pin plays the effect of location, fixes the main bearing cap simultaneously, prevents that the main bearing cap from dismantling the in-process and dropping, damages the part or causes the potential safety hazard.

The lower end of the transmission shaft is also provided with a return spring 11, one end of the return spring is connected with the transmission shaft, the other end of the return spring is fixed on the framework, after the main bearing cap is disassembled from the cylinder body, the movable handle is loosened, the transmission shaft is reset under the action of the return spring, and the expansion device is convenient to take down.

The transmission shaft is also coated with a protective shell 12, the protective shell is fixedly connected to the framework, and the protective shell is coated outside the transmission shaft, the reset spring and other parts to protect working parts and enhance operation safety.

The utility model discloses a use as follows:

the main bearing cap and the cylinder body are in interference fit, so that great manpower and material resources are consumed when the main bearing cap is required to be disassembled from the cylinder body, and part damage or potential safety hazards can also occur in the disassembling process; when the expansion block and the positioning clamping block are in operation, the expansion block and the positioning clamping block are placed into a crankshaft hole along the upper end of the crankshaft hole until the positioning pin is positioned right above the positioning hole, the expansion device falls down after the expansion block is positioned, the positioning pin is inserted into the positioning hole at the upper end of the main bearing cap, the movable handle is lifted upwards by hands, the movable handle pushes the transmission shaft to move downwards relative to the framework, the expansion block is positioned in the cylinder body and is fixed, the framework moves upwards relative to the transmission shaft, the framework drives the positioning clamping block to jack the main bearing cap, the main bearing cap is separated from the cylinder body, the movable handle is loosened, and the movable expansion block resets under the action of the.

In the description of the present invention, it should be noted that the terms "front end", "rear end", "left and right", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "communicating" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Of course, the above description is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the embodiments of the present invention. The present invention is not limited to the above examples, and the technical field of the present invention is equivalent to the changes and improvements made in the actual range of the present invention, which should be attributed to the patent coverage of the present invention.

Claims (7)

1. The utility model provides a novel manual opening of main bearing cap of engine device, its characterized in that, include skeleton (3), fix fixed handle (4) in skeleton (3) upper end, articulate activity handle (5) on skeleton (3), transmission shaft (6) and the piece (7) of opening of connecting in transmission shaft (6) bottom of being connected with activity handle (5) front end, skeleton (3) lower extreme still is fixed with location fixture block (8), and location fixture block (8) are located the piece (7) upper end of opening.

2. The novel manual expansion device for the main bearing cap of the engine as claimed in claim 1, wherein the expansion block (7) and the positioning fixture block (8) are semi-cylindrical, the cambered surface of the expansion block (7) faces downwards, and the cambered surface of the positioning fixture block (8) faces upwards.

3. A novel engine main bearing cap manual expansion device according to claim 2, characterized in that a support (9) is further installed on the framework (3), and a positioning pin (10) is detachably installed on the support (9).

4. A novel engine main bearing cap manual expansion device according to claim 3, characterized in that the bracket (9), the expansion block (7) and the positioning fixture block (8) are located on the same side of the framework (3).

5. A novel engine main bearing cap manual expansion device according to claim 1, characterized in that a return spring (11) is further installed at the lower end of the transmission shaft (6), one end of the return spring (11) is connected with the transmission shaft (6), and the other end of the return spring is fixed on the framework (3).

6. A novel manual engine main bearing cap expanding device as claimed in claim 1, wherein the transmission shaft (6) is further coated with a protective shell (12), and the protective shell (12) is fixedly connected to the framework (3).

7. A novel engine main bearing cap manual expansion device according to claim 1, characterized in that the skeleton (3) is provided with a long hole, and the movable handle (5) moves in the long hole.

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