CN116713954A - Device for overhauling and adjusting crankshaft of diesel engine - Google Patents

Abstract

The invention belongs to the field of automotive technology and discloses a device for maintenance and adjustment of a diesel engine crankshaft, which includes a moving wheel (1), a load-bearing bracket (2), a distance-adjusting slide rail (3), an arc-shaped shaft clamp (4), The shaft positioning wheel (5) and the rail fixing clip (6); the four legs of the load-bearing bracket (2) are equipped with moving wheels (1); the top surface of the load-bearing bracket (2) is designed with two openings, parallel guide rail, several distance-adjustable slide rails (3) are slidingly connected to the guide rail; the distance-adjustable slide rails (3) are fixed on the load-bearing bracket (2) through the rail fixing clip (6); the arc-shaped shaft clamp ( 4) The lower end is tightly connected to the distance-adjustable slide rail (3), and its upper end is provided with two shaft positioning wheels (5). The invention can quickly and easily fix the crankshaft, is suitable for switching operating stations, facilitates the free rotation of the crankshaft required by the operation, and at the same time facilitates cleaning operations and the treatment of generated dirt.

Description

A device for maintenance and adjustment of diesel engine crankshaft

Technical field

The invention belongs to the field of automobile technology, and in particular relates to a device for overhauling and adjusting a diesel engine crankshaft.

Background technique

The crankshaft is an important part of the automobile engine that makes the piston reciprocate to generate continuous power. It withstands the force transmitted by the connecting rod, converts it into torque and drives the action system through its output. Therefore, the crankshaft plays a vital role in the normal operation of the engine.

Regardless of whether the crankshaft is manufactured, product verified or overhauled, relevant quality inspection and maintenance processes are required. This process usually involves crankshaft circumferential rotation, work station transfer, shovel and crane installation, etc., which requires the crankshaft to be in a relatively free position. , space for convenient operation. The usual method is to use a crane or crane to place the crankshaft in a suspended state, or support it on a bracket, and inspect it through equipment, instruments or manual methods. Because some parts are in contact with the support surface and compacted, it is difficult to operate, and the crankshaft also needs to be transported. Large equipment, very inconvenient.

In addition, during the disassembly and identification process of the complete engine, it is also necessary to place the disassembled parts in a suspended state for oil pollution treatment and cleaning. Generally, the waste liquid generated by the treatment will enter the ditch and enter the centralized treatment pool along the channel.

Based on the above-mentioned inspection, maintenance, processing and other requirements, it is necessary to design a device for diesel engine crankshaft maintenance and adjustment to ensure that the crankshaft is in a relatively free space without interference, and to better perform all-round inspection of the crankshaft. deal with.

Contents of the invention

The purpose of the present invention is to provide a device for maintenance and adjustment of a diesel engine crankshaft, so as to solve the problem of using a car or a crane to place the crankshaft in a suspended state, or support it on a bracket, and conduct inspections through equipment, instruments or manual means. Surface contact compaction is difficult to operate, and the crankshaft transfer also requires the use of large equipment, which is a very inconvenient technical problem.

In order to achieve the above object, the specific technical solution of the device for diesel engine crankshaft maintenance and adjustment of the present invention is as follows:

A device for maintenance and adjustment of diesel engine crankshaft, including a moving wheel 1, a load-bearing bracket 2, a distance-adjustable slide rail 3, an arc shaft clamp 4, a shaft positioning wheel 5 and a rail fixing clamp 6; four of the load-bearing bracket 2 The legs are equipped with moving wheels 1; the top surface of the load-bearing bracket 2 is designed with two open, parallel guide rails, and several distance-adjustable slide rails 3 are slidingly connected to the guide rails; the distance-adjustable slide rails 3 are fixed by rails The clamp 6 is fixed on the load-bearing bracket 2; the lower end of the arc-shaped shaft clamp 4 is tightly connected to the distance-adjustable slide rail 3, and its upper end is provided with two shaft positioning wheels 5.

Wherein, the shaft positioning wheel 5 is arranged on the top of the arc-shaped shaft clamp 4 through a rotating shaft.

Among them, the distance-adjustable slide rail 3 adopts a "ji"-shaped structure. The bottom of the slide rail is embedded in the guide rail groove of the load-bearing bracket 2 and can move in both directions along the rail direction.

Among them, the rail fixing clip 6 adopts a split structure, including a clip 6-1, a fixed rod 6-2 and a special-shaped limit clip 6-3; the clip 6-1 has a concave structure, and the middle concave part is in contact with the force-bearing part. The sides of the slide rail beam of the bracket 2 are matched, and one side is designed with a threaded mounting hole; the main body of the special-shaped limit clamp 6-3 is a flat plate set vertically, with an inward protrusion on its bottom edge, and a threaded hole on its upper left corner , the upper right corner is provided with an arm extending inward, and the distance between the threaded hole and the arm is the same as the thickness of the lower end of the arc-shaped shaft clamp 4; the clamp strip 6-1 and the special-shaped limit clip 6-3 are arranged opposite each other on the inside, and the distance between the threaded hole and the arm is the same as the thickness of the lower end of the arc-shaped shaft clamp 4; They are fixedly connected through a fixed rod 6-2, and both ends of the fixed rod 6-2 are provided with threads to match the threaded holes on the two components.

Among them, the upper part of the arc-shaped shaft clamp 4 is an arc-shaped hollow structure. There are vertical and arc-shaped grooves symmetrically distributed on both sides of the arc center line of the arc-shaped shaft clamp 4, which can be used to support and clamp the shaft positioning wheel 5. position, the shaft positioning wheel 5 is placed on the upper part of the arc-shaped shaft card 4 in a hollow structure.

Among them, the shaft positioning wheels 5 appear in pairs and are paired with the distance-adjustable slide rails 3. When used, they are installed at the same position on both sides of the arc center line of the arc shaft clamp 4. The shaft positioning wheels 5 are connected to the crankshaft main journal in a dotted line manner. Surface contact, the crankshaft is supported and fixed by gravity.

Among them, the clamp strip 6-1 and the special-shaped limit clip 6-3 are clamped on the guide rail beams on both sides of the load-bearing bracket 2 to prevent up and down movement. After the clamping installation is completed, they are fixed with threads to limit the position of the distance-adjustable slide rail 3. .

The device for maintenance and adjustment of diesel engine crankshaft of the present invention has the following advantages:

(1) The load-bearing bracket is equipped with movable wheels, which can be moved according to the needs of the work station, or can also be limited and fixed;

(2) There are parallel slide rails arranged on the top surface of the load-bearing bracket. Different numbers of distance-adjustable slide rails can be arranged according to the crankshaft main journal that needs to be supported. The distance-adjustable slide rails can be moved along the rail direction to adjust the distance;

(3) The arc-shaped shaft is stuck in the arc-shaped structure with vertical and arc-shaped grooves, which can be applied to crankshafts with main journals of different diameters;

(4) The crankshaft uses a shaft positioning wheel to support and fix it in a point-line contact manner, which is more stable.

Description of the drawings

Figure 1 is a schematic structural diagram of a device for overhauling and adjusting a diesel engine crankshaft according to the present invention;

Figure 2 is a schematic structural diagram of the arc shaft clamp;

Figure 3 is a schematic structural diagram of the rail fixing clip.

Detailed ways

In order to better understand the purpose, structure and function of the present invention, a device for overhauling and adjusting a diesel engine crankshaft according to the present invention will be described in further detail below in conjunction with the accompanying drawings.

As shown in Figure 1, the device for maintenance and adjustment of a diesel engine crankshaft of the present invention includes a moving wheel 1, a load-bearing bracket 2, a pitch-adjustable slide rail 3, an arc-shaped shaft clamp 4, a shaft positioning wheel 5 and a rail fixing clip 6.

The four legs of the load-bearing bracket 2 are equipped with movable wheels 1, which can be moved or limited and fixed as needed. The bracket adopts a metal frame and is provided with a supporting and strengthening structure.

The top surface of the load-bearing bracket 2 is designed with two open and parallel guide rails, which can arrange different numbers of distance-adjustable slide rails 3 and facilitate the adjustment of the distance between the distance-adjustable slide rails 3.

The distance-adjustable slide rail 3 adopts a "ji"-shaped structure. The bottom of the slide rail is embedded in the guide rail groove of the load-bearing bracket 2 and can move in both directions along the rail direction. After the position is determined, the rail fixing clip 6 is used to fix it.

As shown in Figure 3, the rail fixing clip 6 adopts a split structure and is composed of a clip 6-1, a fixed rod 6-2 and a special-shaped limit clip 6-3;

The clip 6-1 has a concave structure, the middle concave part matches the side of the slide rail beam of the load-bearing bracket 2, and one side is designed with a threaded mounting hole;

The main body of the special-shaped limit clamp 6-3 is a flat plate arranged vertically. The bottom edge is provided with an inward protrusion. The upper left corner is provided with a threaded hole. The upper right corner is provided with an arm extending inward. Between the threaded hole and the arm The distance is the same as the thickness of the lower end of the arc-shaped shaft clamp 4.

The clip 6-1 and the special-shaped limit clip 6-3 are arranged opposite each other on the inner side, and are fixedly connected through a fixed rod 6-2. Both ends of the fixed rod 6-2 are provided with threads and are connected with the above two components. match the threaded holes on the

The clamp strip 6-1 and the special-shaped limit clamp 6-3 are clamped on the guide rail beams on both sides of the load-bearing bracket 2 to prevent up and down movement. After the clamping installation is completed, they are fixed with threads to limit the position of the distance-adjustable slide rail 3.

As shown in Figure 2, the lower end of the arc-shaped shaft clamp 4 is tightly connected to the distance-adjustable slide rail 3. The upper part of the arc-shaped shaft clamp 4 has a hollow structure. There are vertical and The arc-shaped groove can be used to support and clamp the shaft of the shaft positioning wheel 5. The shaft positioning wheel 5 is placed on the upper part of the arc-shaped shaft clamp 4 in a hollow structure.

The shaft positioning wheels 5 appear in pairs and are paired with the distance-adjustable slide rails 3. When used, they are installed at the same position on both sides of the arc center line of the arc shaft clamp 4. The shaft positioning wheels 5 contact the crankshaft main journal surface in a dotted line. , the crankshaft is supported and fixed through gravity.

When in use, the engine crankshaft is placed on the shaft positioning wheel 5 with the main journal curved surface support position, and the shaft positioning wheel 5 is supported in a point-line contact manner; when the work station moves, release the limiting structure of the moving wheel 1 and move to the designated position. And the limit is fixed; during maintenance and adjustment, the crankshaft and the shaft positioning wheel 5 roll at the same time to realize rotation without obstruction; when placing the main journal crankshaft with different diameters, the position of the shaft positioning wheel 5 in the arc shaft clamp 4 can be adjusted, thereby achieving support .

The invention can quickly and easily fix the crankshaft, is suitable for switching operating stations, facilitates the free rotation of the crankshaft required by the operation, and at the same time facilitates cleaning operations and the treatment of generated dirt.

Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can also make several modifications and improvements without departing from the principles of the present invention, and these should also be regarded as belonging to the present invention. protected range.

Claims (7)

1. The device for overhauling and adjusting the crank shaft of the diesel engine is characterized by comprising a movable wheel (1), a bearing bracket (2), a distance-adjusting sliding rail (3), an arc-shaped shaft clamp (4), a shaft positioning wheel (5) and a rail fixing clamp (6); the four supporting legs of the bearing bracket (2) are provided with moving wheels (1); the top surface of the bearing support (2) is provided with two open parallel guide rails, and a plurality of distance-adjusting slide rails (3) are in sliding connection with the guide rails; the distance-adjusting slide rail (3) is fixed on the bearing bracket (2) through a rail fixing clamp (6); the lower end of the arc-shaped shaft clamp (4) is fixedly connected with the distance-adjusting slide rail (3), and the upper end of the arc-shaped shaft clamp is provided with two shaft positioning wheels (5).

2. The device for overhauling and adjusting a crank shaft of a diesel engine according to claim 1, characterized in that the shaft positioning wheel (5) is arranged on top of the arc-shaped shaft clamp (4) through a rotating shaft.

3. The device for overhauling and adjusting the crank shaft of the diesel engine according to claim 1, wherein the distance-adjusting slide rail (3) adopts a ' Chinese character ' ji ' -shaped structure, and the bottom of the slide rail is embedded into a guide rail groove of the bearing bracket (2) and can move bidirectionally along the rail direction.

4. The device for overhauling and adjusting the crank shaft of the diesel engine according to claim 1, wherein the rail fixing clamp (6) adopts a split structure and comprises a clamping strip (6-1), a fixing rod (6-2) and a special-shaped limiting clamp (6-3); the clamping strip (6-1) is of a concave structure, the middle concave part is matched with the side face of the slide rail beam of the bearing bracket (2), and a threaded mounting hole is formed in one side of the clamping strip; the main body of the special-shaped limiting clamp (6-3) is a vertically arranged flat plate, the bottom edge of the special-shaped limiting clamp is provided with an inward bulge, the upper left corner of the special-shaped limiting clamp is provided with a threaded hole, the upper right corner of the special-shaped limiting clamp is provided with an inward extending arm, and the distance between the threaded hole and the arm is the same as the thickness of the lower end of the arc-shaped shaft clamp (4); the clamping strips (6-1) are oppositely arranged on the inner sides of the special-shaped limiting clamps (6-3), the clamping strips and the special-shaped limiting clamps are fixedly connected through fixing rods (6-2), threads are arranged at two ends of the fixing rods (6-2) and are matched with threaded holes in the two parts.

5. The device for overhauling and adjusting the crank shaft of the diesel engine according to claim 1, wherein the upper part of the arc-shaped shaft clamp (4) is of an arc-shaped hollow structure, vertical grooves and arc-shaped grooves are symmetrically distributed on two sides of the arc center line of the arc-shaped shaft clamp (4) and can be used for supporting and clamping the shaft of the shaft positioning wheel (5), and the shaft positioning wheel (5) is arranged on the hollow structure of the upper part of the arc-shaped shaft clamp (4).

6. The device for overhauling and adjusting the crank shaft of the diesel engine according to claim 5, wherein the shaft positioning wheels (5) are arranged in pairs and are matched with the distance adjusting slide rail (3), and are respectively arranged at the same positions on two sides of the arc center line of the arc-shaped shaft clamp (4) when in use, the shaft positioning wheels (5) are contacted with the main journal surface of the crank shaft in a dotted line manner, and the crank shaft is supported and fixed in a gravity manner.

7. The device for overhauling and adjusting a crank shaft of a diesel engine according to claim 4, wherein the clamping strip (6-1) and the special-shaped limiting clamp (6-3) are clamped on guide rail beams at two sides of the bearing support (2) to prevent up-down movement, and the clamping strip is fixed in a threaded manner after the clamping installation is completed to limit the position of the distance adjusting slide rail (3).