CN213685152U

CN213685152U - Hydraulic tensioner for timing chain of engine

Info

Publication number: CN213685152U
Application number: CN202022794710.XU
Authority: CN
Inventors: 郝文茂
Original assignee: Jinan Weitao Science & Technol
Current assignee: Jinan Weitao Science & Technol
Priority date: 2020-11-27
Filing date: 2020-11-27
Publication date: 2021-07-13
Anticipated expiration: 2030-11-27

Abstract

The utility model discloses an engine timing chain hydraulic tensioner, which comprises a tensioner main body, wherein the lower end of the tensioner main body is provided with a second oil pressure cavity, a second piston is arranged in the second oil pressure cavity, the right side surface of the second piston is connected with a second push rod, the right side surface of the second piston is provided with a pressure sensor, the left end of the second push rod is slidably connected with a metal shaft sleeve, the right end of the second oil pressure cavity is provided with a second limiting block, the right side surface of the metal shaft sleeve and the left side surface of the second limiting block are connected with a second spring, the right end of the second push rod is slidably connected with the second limiting block, the right end of the second push rod is rotatably connected with a second tensioning wheel, when the push rod in the second piston is started, the use limit of the utility model is about to be reached, the chain in the engine should be overhauled in time, and the function can remind the meshing condition of the chain in the, the safety of use is increased.

Description

Hydraulic tensioner for timing chain of engine

Technical Field

The utility model relates to an engine tensioning ware technical field, specific field is an engine timing chain hydraulic pressure tensioning ware.

Background

At present, a timing system of an engine generally adopts chain driving, mainly has the advantages of high reliability, maintenance-free performance and the like, but has some defects, in order to lubricate a chain and a chain wheel, an oil duct is usually led on a cylinder body and a cylinder cover, an oil nozzle is additionally arranged, the complex structure and the increased cost of the internal structure of the cylinder body and the cylinder cover of the engine are caused, in addition, along with the increase of the service time of the engine, the abrasion of each part in the timing process is increased, the chain wheel is reduced, the chain is relatively lengthened, at the moment, the chain has the risk of tooth jumping, particularly, during cold starting, oil pressure is not established in the lubricating oil, the tension of a hydraulic tensioner is not acted, the friction resistance of each part is larger, at the moment, the chain starter can not overcome the resistance and forcibly runs under the action of the chain to jump, The cost is high, and the requirement on cleanliness of the interior is high, so that the hydraulic tensioner for the timing chain of the engine is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an engine timing chain hydraulic pressure tensioning ware to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: an engine timing chain hydraulic tensioner comprises a tensioner main body, wherein a first oil pressure cavity is arranged at the upper end of the tensioner main body, a first piston is slidably mounted inside the first oil pressure cavity, a first push rod is connected to the right side face of the first piston, a clamping block is fixedly connected to the left end of the first push rod, a first limiting block is arranged at the right end of the first oil pressure cavity, the right end of the first push rod is slidably mounted with the first limiting block, a first spring is arranged on the first push rod, the left end of the first spring is fixedly connected with the right surface of the clamping block, the right end of the first spring is fixedly connected with the first limiting block, an organic oil groove is arranged at the upper end of the tensioner main body, a first oil inlet pipe is connected to the left side of the lower end of the organic oil groove, a first one-way valve is mounted on the first oil inlet pipe, and the right end of the first oil inlet pipe is connected with the, the right end of the first push rod is connected with an installation block, the installation block is rotatably connected with a first tensioning wheel, the lower end of the tensioner main body is provided with a second oil pressure cavity, the right side of the lower end of the first oil pressure cavity is connected with a second oil inlet pipe, the second oil inlet pipe is provided with a second one-way valve, the right side of the lower end of the second oil inlet pipe is connected with the left end of the second oil pressure cavity, a second piston is arranged in the second oil pressure cavity, the right side surface of the second piston is connected with a second push rod, the right side surface of the second piston is provided with a pressure sensor, the left end of the second push rod is slidably connected with a metal shaft sleeve, the right end of the second oil pressure cavity is provided with a second limiting block, the right side surface of the metal shaft sleeve and the left side surface of the second limiting block are connected with a second spring, the right end of the second push rod is slidably connected with the second limiting block, the upper end, the lower end and the right end of the tensioner main body are respectively provided with an assembling hole.

Preferably, the edges of the first piston and the second piston are respectively provided with a sealing ring.

Preferably, the edges of the first tensioning wheel and the second tensioning wheel are respectively provided with a ridge-shaped protrusion.

Preferably, all three of the assembling holes are kidney-shaped holes.

Preferably, the pressure sensor is an OMEGA pressure sensor, and the pressure sensor is electrically connected with an instrument panel in the vehicle.

Preferably, a filter screen is arranged on the first oil inlet pipe and is positioned at the upper end of the first one-way valve.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model provides an engine timing chain hydraulic pressure tensioning ware utilizes the hydraulic pressure principle through the effect of first check valve, promotes first piston motion, drives first push rod and then drives first tight pulley motion through first piston, makes closely laminating between first tight pulley and the chain, guarantees the normal work of engine, simple structure, and the practicality is strong, indirect increase the utility model discloses a durability is equipped with pressure sensor between the piston of second oil pressure intracavity portion and the metal axle sleeve simultaneously, when the inside push rod of second piston starts, explains and is about to reach the utility model discloses the use limit should in time overhaul the inside chain of engine, and this function can in time remind the inside chain meshing condition of engine, has increased the security of using.

Drawings

FIG. 1 is a schematic sectional view of the front view of the present invention;

fig. 2 is a schematic view of the structure of the present invention;

FIG. 3 is a schematic cross-sectional view of the piston of the present invention;

FIG. 4 is an enlarged view of the point A in FIG. 1;

FIG. 5 is an enlarged view of the point B in FIG. 1;

fig. 6 is an enlarged schematic view of C in fig. 1.

In the figure: 1-tensioner body, 2-first oil pressure cavity, 3-first piston, 4-first push rod, 5-clamping block, 6-first limiting block, 7-first spring, 8-machine oil groove, 9-first oil inlet pipe, 10-first one-way valve, 11-mounting block, 12-first tensioning wheel, 13-second oil pressure cavity, 14-second oil inlet pipe, 15-second one-way valve, 16-second push rod, 17-pressure sensor, 18-metal shaft sleeve, 19-second limiting block, 20-second tensioning wheel, 21-assembly hole, 22-sealing ring, 23-filter screen, 24-second piston and 25-second spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides a technical solution: an engine timing chain hydraulic tensioner comprises a tensioner main body 1, wherein a first oil pressure cavity 2 is arranged at the upper end of the tensioner main body 1, a first piston 3 is slidably mounted inside the first oil pressure cavity 2, a first push rod 4 is connected to the right side face of the first piston 3, a fixture block 5 is fixedly connected to the left end of the first push rod 4, a first limiting block 6 is arranged at the right end of the first oil pressure cavity 2, the right end of the first push rod 4 is slidably mounted with the first limiting block 6, a first spring 7 is arranged on the first push rod 4, the left end of the first spring 7 is fixedly connected with the right surface of the fixture block 5, the right end of the first spring 7 is fixedly connected with the first limiting block 6, an organic oil groove 8 is arranged at the upper end of the tensioner main body 1, a first oil inlet pipe 9 is connected to the left side of the lower end of the organic oil groove 8, a first one-way valve 10 is mounted on the first oil inlet, the right end of the first oil inlet pipe 9 is connected with the left end of the first oil pressure cavity 2, the right end of the first push rod 4 is connected with an installation block 11, the installation block 11 is connected with a first tensioning wheel 12 in a rotating mode, engine oil in the engine oil tank 8 enters the first oil pressure cavity 2 through the first oil inlet pipe 9, the engine oil provides right pressure for the first piston 3 by utilizing the one-way flow effect of the first one-way valve 10 and adopting a hydraulic principle, the first piston 3 pushes the first push rod 4 to move rightwards, the first push rod 4 drives the tensioning wheel to move rightwards, and further the support effect on an engine chain is realized, the lower end of the tensioner main body 1 is provided with a second oil pressure cavity 13, the right side of the lower end of the first oil pressure cavity 2 is connected with a second oil inlet pipe 14, the second oil inlet pipe 14 is provided with a second one-way valve 15, the right side of the lower end of the second oil inlet pipe 14 is connected with the left, a second piston 24 is arranged inside the second oil pressure cavity 13, a second push rod 16 is connected to the right side surface of the second piston 24, a pressure sensor 17 is arranged on the right side surface of the second piston 24, a metal shaft sleeve 18 is slidably connected to the left end of the second push rod 16, a second limit block 19 is arranged at the right end of the second oil pressure cavity 13, a second spring 25 is connected to the right side surface of the metal shaft sleeve 18 and the left side surface of the second limit block 19, the right end of the second push rod 16 is slidably connected to the second limit block 19, a second tensioning wheel 20 is rotatably connected to the right end of the second push rod 16, when the output end of the first oil pressure cavity 2 reaches a limit, engine oil flows into the second oil pressure cavity 13 through the second oil inlet pipe 14, the second piston 24 is pushed to move rightwards under the action of the unidirectional flow direction of the second one-way valve 15, and the second spring 25 provides a leftward elastic force for the metal shaft sleeve 18, then the pressure sensor 17 senses the pressure and starts to transmit an electric signal, the second piston 24 pushes the second push rod 16 rightwards, the second push rod 16 pushes the second tension pulley 20 rightwards, the second tension pulley 20 continues to have the effect of pushing the chain in the engine tightly, and the upper end, the lower end and the right end of the tensioner main body 1 are respectively provided with an assembly hole 21.

Specifically, the edges of the first piston 3 and the second piston 24 are respectively provided with a sealing ring 22, so that a sealing effect is achieved, and engine oil is prevented from entering the first oil pressure cavity or the second oil pressure cavity.

Specifically, the edges of the first tensioning wheel 12 and the second tensioning wheel 20 are respectively provided with a ridge-shaped protrusion, so that the chain is prevented from falling off in the high-speed running process of the engine.

Particularly, it is three the pilot hole 21 is waist shape hole, is convenient for in the installation right the utility model discloses a position is adjusted, and the design hommization is reasonable.

Particularly, pressure sensor 17 is OMEGA pressure sensor, and OMEGA pressure sensor has strong stability, and anti-interference, characteristics such as long service life, pressure sensor 17 is connected with the interior panel board electricity of car, and when touching pressure sensor 17, pressure sensor 17 sends the panel board with the signal of telecommunication, and the trouble lamp lights, reminds the driver in time to overhaul.

Particularly, be equipped with filter screen 23 on the first oil pipe 9, filter screen 23 is located the upper end of first check valve 10, can effectually filter the impurity in the machine oil, prevents to cause the jam to the tensioning ware is inside.

The working principle is as follows: when the utility model is used, the utility model is installed beside an engine chain by a technician, then the engine oil in the engine oil groove 8 enters the first oil pressure cavity 2 through the first oil inlet pipe 9, the right pressure is provided to the first piston 3 by utilizing the one-way flow effect of the first check valve 10 and adopting the hydraulic principle, the first piston 3 pushes the first push rod 4 to move rightwards, the first push rod 4 drives the tension wheel to move rightwards, thereby realizing the supporting effect on the engine chain, ensuring that the engine chain is always in a close fit state, ensuring the normal work of the engine, when the output end of the first oil pressure cavity 2 reaches the limit, the engine oil flows into the second oil pressure cavity 13 through the second oil inlet pipe 14, the pushing of the second piston 24 to move rightwards is realized through the one-way flow effect of the second check valve 15, at the moment, the second spring 25 provides the left elasticity for the metal shaft sleeve 18, then the pressure sensor 17 senses pressure and starts to transmit an electric signal, the second piston 24 pushes the second push rod 16 rightwards, the second push rod 16 pushes the second tensioning wheel 20 rightwards, the second tensioning wheel 20 continues to have a pushing effect on the chain in the engine, the pressure sensor 17 is electrically connected with an instrument panel in the vehicle, when the pressure sensor 17 is contacted, the pressure sensor 17 sends the electric signal to the instrument panel, and a fault lamp is turned on to remind a driver of timely overhauling.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The utility model discloses the standard part that uses all can purchase from the market, and dysmorphism piece all can be customized according to the description with the record of drawing of description, and the concrete connection mode of each part all adopts conventional means such as ripe bolt, rivet, welding among the prior art, and machinery, part and equipment all adopt prior art, and conventional model, including circuit connection adopts conventional connection mode among the prior art, does not detailed here again.

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

Claims

1. An engine timing chain hydraulic tensioner comprising a tensioner body (1), characterized in that: the tensioner is characterized in that a first oil pressure cavity (2) is arranged at the upper end of the tensioner main body (1), a first piston (3) is slidably mounted inside the first oil pressure cavity (2), a first push rod (4) is connected to the right side face of the first piston (3), a clamping block (5) is fixedly connected to the left end of the first push rod (4), a first limiting block (6) is arranged at the right end of the first oil pressure cavity (2), the right end of the first push rod (4) is slidably mounted with the first limiting block (6), a first spring (7) is arranged on the first push rod (4), the left end of the first spring (7) is fixedly connected with the right surface of the clamping block (5), the right end of the first spring (7) is fixedly connected with the first limiting block (6), an oil groove (8) is arranged at the upper end of the tensioner main body (1), a first oil inlet pipe (9) is connected to the left side of the lower end of the oil groove (8), the hydraulic tensioner is characterized in that a first check valve (10) is installed on the first oil inlet pipe (9), the right end of the first oil inlet pipe (9) is connected with the left end of the first oil pressure cavity (2), the right end of the first push rod (4) is connected with an installation block (11), the installation block (11) is connected with a first tensioning wheel (12) in a rotating mode, the lower end of the tensioner main body (1) is provided with a second oil pressure cavity (13), the right side of the lower end of the first oil pressure cavity (2) is connected with a second oil inlet pipe (14), the second oil inlet pipe (14) is provided with a second check valve (15), the right side of the lower end of the second oil inlet pipe (14) is connected with the left end of the second oil pressure cavity (13), a second piston (24) is arranged inside the second oil pressure cavity (13), the right side face of the second piston (24) is connected with a second push rod (16), and the right side face of the second piston (24) is provided with a pressure, the left end sliding connection of second push rod (16) has metal axle sleeve (18), the right-hand member of second oil pressure cavity (13) is equipped with second stopper (19), the right flank of metal axle sleeve (18) and the left surface of second stopper (19) are connected with second spring (25), the right-hand member and second stopper (19) sliding connection of second push rod (16), the right-hand member of second push rod (16) rotates and is connected with second take-up pulley (20), upper end, lower extreme and the right-hand member of tensioning ware main part (1) are equipped with pilot hole (21) respectively.

2. An engine timing chain hydraulic tensioner as set forth in claim 1, wherein: and sealing rings (22) are respectively arranged on the edges of the first piston (3) and the second piston (24).

3. An engine timing chain hydraulic tensioner as set forth in claim 1, wherein: the edges of the first tensioning wheel (12) and the second tensioning wheel (20) are respectively provided with a ridge-shaped bulge.

4. An engine timing chain hydraulic tensioner as set forth in claim 1, wherein: the three assembly holes (21) are all kidney-shaped holes.

5. An engine timing chain hydraulic tensioner as set forth in claim 1, wherein: the pressure sensor (17) is an OMEGA pressure sensor, and the pressure sensor (17) is electrically connected with an instrument panel in the vehicle.

6. An engine timing chain hydraulic tensioner as set forth in claim 1, wherein: be equipped with filter screen (23) on first oil pipe (9), filter screen (23) are located the upper end of first check valve (10).