CN221482019U - Timing tool for engine overhaul - Google Patents

Abstract

The utility model relates to the technical field related to engine overhaul timing tools, in particular to an engine overhaul timing tool which comprises a fixed block clamped on a cam shaft, wherein the fixed block is of an upper flat concave structure, two side convex parts of the fixed block vertically penetrate through fastening screws, a rotating sleeve is arranged on part of the outer wall of the fastening screw, two sides of an inner concave surface of the fixed block vertically penetrate through assembling grooves, the bottom surface of an inner cavity of the assembling grooves is provided with supporting round blocks, and the center of each supporting round block is provided with a positioning assembly; the positioning assembly comprises an end block combined in the inner cavity of the assembly groove, a positioning shaft is arranged in the center of the end face of the end block, and a group of arc pads which are symmetrically distributed are arranged at opposite angles of two sides of the inner concave surface of the fixed block. The utility model effectively ensures that the cam shaft and other parts are fixed before disassembly to prevent the cam shaft and other parts from rotating, is applicable to timing maintenance of multiple specifications of engines, and has universal applicability.

Description

Timing tool for engine overhaul

Technical Field

The utility model relates to the technical field related to engine overhaul timing tools, in particular to a timing tool for engine overhaul.

Background

Timing is an important component of an engine gas distribution system, and the accuracy of the gas inlet and exhaust time is ensured by being connected with a crankshaft and matched with a certain transmission ratio. The timing function is that when the engine is running, the stroke of the piston, the opening and closing of the valve and the ignition sequence are kept to be synchronous at all times under the connection function of the timing. By the timing mechanism of the engine, each cylinder just works: when the piston is just up to the top dead center, the valve is just closed, and the spark plug is just ignited.

However, in the working process of the engine, four processes of air intake, compression, explosion and exhaust are continuously carried out in the cylinder, and the time of each step is matched with the movement state and the position of the piston, so that the air intake, the air exhaust and the lifting of the piston are mutually coordinated, and the force is transmitted to corresponding parts under the drive of the crankshaft. The space position of the components is difficult to adjust after being changed in the maintenance process, which is time-consuming and labor-consuming, and in order to avoid the change of the space position of the components in the maintenance process, the components such as the cam shaft and the like must be fixed before being disassembled to prevent the rotation of the cam shaft and the like.

Therefore, it has been proposed to design a timing tool for engine maintenance.

Disclosure of utility model

Aiming at the defects of the prior art, the utility model provides a timing tool for engine overhaul, which is used for solving the technical problems of the background technology.

In order to solve the technical problems, the utility model provides the following technical scheme: the timing tool for engine overhaul comprises a fixed block clamped on a cam shaft, wherein the whole fixed block is of an upper flat concave structure, two side convex parts of the fixed block vertically penetrate through a fastening screw rod, a rotating sleeve is arranged on part of the outer wall of the fastening screw rod, which is arranged on the fixed block, two sides of an inner concave surface of the fixed block vertically penetrate through an assembly groove, a supporting circular block is arranged on the bottom surface of an inner cavity of the assembly groove and on the end surface of the fixed block, and a positioning assembly is arranged in the center of the supporting circular block;

The positioning assembly comprises an end block combined in the inner cavity of the assembly groove, a positioning shaft which is used for being inserted into the timing hole of the cam shaft and fixed is arranged in the center of the end surface of the end block, and a group of symmetrically distributed arc pads are arranged at opposite angles of two sides of the inner concave surface of the fixed block.

Preferably, a group of connecting plates are arranged in front of and behind the arc pad, and the connecting plates are provided with assembly holes.

Preferably, a group of connecting columns matched with the assembly holes are arranged on the fixing block at the front and back of the angle end position of the inner concave surface.

Preferably, the arc pad is provided with a plurality of thickness specifications.

Preferably, the end block adopts a two-layer ladder structure, and the inner cavity of the assembly groove is provided with a two-layer ladder groove which is matched with the end block.

Preferably, a section of thread part is arranged on the lower section of the positioning shaft, which is arranged on the end block.

Preferably, a rubber pad is arranged on the inner wall of the assembly groove.

By means of the technical scheme, the timing tool for engine overhaul provided by the utility model has the following beneficial effects:

1. due to the arrangement of the fixing block, the fastening screw and the positioning component, the utility model can be suitable for Rongwei 350 timing maintenance through the cooperation of the fixing block, the fastening screw and the positioning component, can be suitable for high-pressure V80 timing maintenance through the removed positioning component, can be suitable for multi-specification engine timing maintenance, effectively ensures that components such as a cam shaft and the like are fixed before disassembly, prevents the cam shaft and the like from rotating, and has universal applicability.

2. Due to the arrangement of the arc pad, the cam shaft is prevented from being damaged by extrusion through nondestructive protection, and the cam shaft with multiple thicknesses can be contacted and abutted under multiple scenes, so that the use effect is good.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application.

In the drawings:

FIG. 1 is a perspective view of the timing tool for engine maintenance according to the present utility model;

FIG. 2 is a perspective view of a timing tool for engine maintenance according to the present utility model;

fig. 3 is a perspective view showing a second state of the whole timing tool for engine maintenance according to the present utility model.

In the figure: 1. a fixed block; 2. fastening a screw; 3. a rotating sleeve; 4. an assembly groove; 5. a positioning assembly; 51. an end block; 52. positioning a shaft; 53. a threaded portion; 6. an arc pad; 7. a connecting plate; 8. and (5) connecting the columns.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Fig. 1-3 illustrate one embodiment of the present utility model: the utility model provides a timing tool for engine overhaul, including block 1 of block on the camshaft, and block 1 wholly is the concave structure of upper and lower level, the both sides convex part of block 1 runs through from top to bottom and installs fastening screw 2, the part outer wall that places block 1 on the fastening screw 2 installs the swivel cap 3, swivel cap 3 is in the notch that block 1 terminal surface was seted up from top to bottom internal rotation connection, realize block 1 fixed engine camshaft on Rongwei 350, block 1's concave surface both sides run through from top to bottom and set up mounting groove 4, the support round piece of the inner chamber bottom surface of mounting groove 4 and at block 1's terminal surface integrated into one piece, support round piece's center passes assembly positioning assembly 5 from top to bottom, can be suitable for the maintenance of big logical V80 of upper vapor through the positioning assembly 5 structure of taking off, this instrument is taken off from block 1, insert in the camshaft timing hole from the cylinder cap timing hole and fix;

The positioning assembly 5 comprises an end block 51 combined in the inner cavity of the assembly groove 4, a positioning shaft 52 which is integrally formed in the center of the end surface of the end block 51 and used for being inserted into a cam shaft timing hole and fixed, and a group of symmetrically distributed arc pads 6 can be detachably replaced at opposite angle ends of two sides of the inner concave surface of the fixed block 1.

The front and rear of the arc pad 6 are integrally formed into a group of connecting plates 7, and the connecting plates 7 are provided with assembly holes; a group of connecting columns 8 which are matched with the assembly holes are welded in front of and behind the angular end position of the inner concave surface on the fixed block 1; the arc pad 6 is provided with a plurality of thickness specifications; the arc pad 6 with different thickness specifications can be detachably replaced through the assembly holes and the connecting columns 8 on the connecting plate 7, and the arc pad is suitable for abutting fixation on camshafts with multiple specifications; the end block 51 adopts a two-layer ladder structure, and the inner cavity of the assembly groove 4 is provided with two-layer ladder grooves which are matched with the end block 51; the positioning shaft 52 is arranged on the lower section part of the end block 51 to integrally form a section of threaded part 53 which can rotate to keep the assembly of the positioning assembly 5 on the inner side of the engine cylinder cover of the upper big V80; the inner wall of the assembly groove 4 is adhered with a rubber pad, the connection damping force of the positioning assembly 5 in the assembly groove 4 is increased, and the cam shaft is fixed to prevent rotation when the cam shaft is matched with the fixing block 1 to carry out timing maintenance on the Rongwei 350.

The implementation process of the implementation is as follows: when engine belt replacement is carried out on Rongwei 350, firstly, the fixing block 1 with the structure is placed on an engine cam shaft, then the fastening screw rods 2 at two ends are rotated, so that the fastening screw rods 2 at two ends are screwed into threaded hole grooves on an engine cylinder body in sequence, the structure is fixed on the engine cylinder body, and then the positioning components 5 are sequentially inserted into two side assembly grooves 4 formed in the upper plane of the fixing block 1, so that the positioning shaft 52 in the positioning components 5 penetrates through the central hole of the supporting circular block to be fixed with timing holes on the cam shaft;

In the timing maintenance operation of the large-pass V80 for the upper stream, the positioning assemblies 5 are taken out from the assembly grooves 4 on the fixed block 1, and the two positioning assemblies 5 are sequentially inserted into the timing holes of the cam shaft from the timing holes of the cylinder cover at the timing position of the exhaust side and the timing position of the intake side to be fixed.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. The utility model provides an engine overhauls with instrument of timing, includes block (1) of block on the camshaft, just block (1) wholly are level and concave structure, its characterized in that: the fixing device is characterized in that fastening screws (2) are arranged on protruding parts on two sides of the fixing block (1) in a penetrating mode up and down, rotating sleeves (3) are arranged on part of outer walls of the fixing block (1) on the fastening screws (2), assembling grooves (4) are arranged on two sides of an inner concave surface of the fixing block (1) in a penetrating mode up and down, supporting round blocks are arranged on the bottom surfaces of inner cavities of the assembling grooves (4) and on the end faces of the fixing block (1), and positioning assemblies (5) are arranged in the centers of the supporting round blocks;

The positioning assembly (5) comprises an end block (51) combined in the inner cavity of the assembly groove (4), a positioning shaft (52) used for being inserted into a cam shaft timing hole and fixed is arranged in the center of the end surface of the end block (51), and a group of arc pads (6) which are symmetrically distributed are arranged at opposite angles of two sides of the inner concave surface of the fixed block (1).

2. The timing tool for engine maintenance according to claim 1, wherein: a group of connecting plates (7) are arranged in front of and behind the arc pad (6), and assembly holes are formed in the connecting plates (7).

3. The timing tool for engine maintenance according to claim 2, wherein: a group of connecting columns (8) which are matched with the assembly holes are arranged on the fixed block (1) at the front and back of the angle end position of the inner concave surface.

4. The timing tool for engine maintenance according to claim 1, wherein: the arc pad (6) is provided with a plurality of thickness specifications.

5. The timing tool for engine maintenance according to claim 1, wherein: the end block (51) adopts a two-layer ladder structure, and the inner cavity of the assembly groove (4) is provided with a two-layer ladder groove which is matched with the end block (51).

6. The timing tool for engine maintenance according to claim 1, wherein: a section of threaded part (53) is arranged on the lower section of the end block (51) on the positioning shaft (52).

7. The timing tool for engine maintenance according to claim 1, wherein: the inner wall of the assembly groove (4) is provided with a rubber pad.