CN220863794U - Timing chain locking clamp for engine repair - Google Patents
Timing chain locking clamp for engine repair Download PDFInfo
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- CN220863794U CN220863794U CN202322636123.1U CN202322636123U CN220863794U CN 220863794 U CN220863794 U CN 220863794U CN 202322636123 U CN202322636123 U CN 202322636123U CN 220863794 U CN220863794 U CN 220863794U
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- timing chain
- lock catch
- air inlet
- locking part
- inlet side
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- 230000008439 repair process Effects 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 8
- RDYMFSUJUZBWLH-UHFFFAOYSA-N endosulfan Chemical compound C12COS(=O)OCC2C2(Cl)C(Cl)=C(Cl)C1(Cl)C2(Cl)Cl RDYMFSUJUZBWLH-UHFFFAOYSA-N 0.000 description 7
- 238000012423 maintenance Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 4
- 239000010705 motor oil Substances 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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Abstract
The utility model locks a timing chain locking clamp for engine repair, which consists of an air inlet side locking part and an air outlet side locking part, wherein the air inlet side locking part is fixed on the air inlet side of an engine cylinder cover assembly and locks the air inlet side of a timing chain; the exhaust side locking part is fixed on the exhaust side of the engine cylinder cover assembly and locks the exhaust side of the timing chain; the air inlet side locking part comprises a first bottom plate, a first upper seat connected below the first bottom plate, a first lock catch adjusting rod, a first auxiliary rod clung to the side surface of the first lock catch adjusting rod, a lock catch with the middle part connected with the first lock catch adjusting rod and one end of the first auxiliary rod, the other ends of the first lock catch adjusting rod and the first auxiliary rod penetrate through the through hole on the first upper seat and are connected with the first lock catch adjusting rod in a matched mode through a locking nut to limit; the upper surface of the first upper seat is tightly connected with the lower surface of the first bottom plate to form a whole. The method can simplify the repair process of the engine, reduce the difficulty of disassembling the components and improve the efficiency.
Description
Technical Field
The utility model relates to the technical field of automobile engines, in particular to a timing chain locking clamp for engine repair.
Background
Automotive engine valve timing technology, also known as continuously variable valve timing systems. Currently, high performance engines are commonly equipped with such systems. Because the influence of the timing angle of the valve on the economy and the power of the engine is obvious at high rotation speed and low rotation speed, the air inflow and the air inflow efficiency can be improved by fully utilizing the air inflow inertia at high rotation speed, so that the valve is opened and closed early and late, and the low rotation speed is opposite. The system adjusts the phase position or the valve lift of the engine cam through the equipped control and execution system, thereby achieving the purpose of optimizing the valve distribution process of the engine. However, after the engine assembly is loaded, problems such as abnormal sound of hydraulic tappet, poor timing phase operation, poor VVT operation, and defects of a cam shaft often occur, and reworking and repairing are required. At this time, related parts such as a front wheel train, a front cover assembly, an oil pan assembly, a timing system and the like on the upper front end of the engine assembly are detached first, and then cylinder head inner parts such as a hydraulic tappet, a phaser, a VVT, a camshaft and the like are replaced. The hydraulic tappet, the phaser, the VVT and the cam shaft belong to internal components and are tightly and fixedly arranged in the cylinder head assembly 1. When reworking and repairing (see fig. 1 and 2), the engine assembly is required to be detached from the whole vehicle in normal operation; then, the cylinder cover assembly 1 and its auxiliary parts, the oil pan assembly 2, the front end belt 3, the idler 4, the generator assembly 5, the front end belt tensioner 6, the main shaft pulley 7, the oil pump harness 8, the front cover assembly 9, the OCV valve 10 and other external components are disassembled by using conventional tools, and the hydraulic tensioner assembly 13, the timing chain moving rail assembly 12, the timing chain rail assembly 14, the timing chain 11, the inter-camshaft guide rail 15, the crankshaft timing sprocket 16, the intake camshaft sprocket 17, the exhaust camshaft sprocket 18 and other internal components are disassembled, and the timing chain 11 is engaged with the crankshaft timing sprocket 16, the intake camshaft sprocket 17, the exhaust camshaft sprocket 18. The disassembly process cannot be realized by a single person, two maintenance personnel are needed to cooperate, the time is about six hours, the workload is quite large, the consumption in the disassembly process is large, the technical requirements on the maintenance personnel are relatively high, if the operation is improper, new faults are easy to generate, and a user cannot accept the disassembly and repair mode. Thus, there is a need to find an easy way to rework an engine.
CN 205254450U discloses "a timing chain installation tool and timing chain assembly system", wherein the timing chain installation tool comprises: the locating part is arranged on the limiting part and is used for fixing the limiting part. When the engine is initially assembled, the limiting part of the timing chain mounting tool is abutted against the loose edge guide rail for mounting the timing chain, so that the loose edge guide rail is in a fixed state, the loose edge guide rail presses the timing chain, the timing chain is ensured not to move randomly, and then the fastening bolt of the camshaft chain wheel is screwed, and at the moment, the camshaft chain wheel cannot rotate along with the timing chain; the phase deviation generated in the assembly process of the timing chain system is reduced, so that the valve timing is ensured to be kept within a certain precision range.
CN212887378U discloses a "special tool for mounting and fixing engine timing chain", comprising a fixing plate, an adjusting bolt, and an adjusting sleeve; the two adjusting sleeves are respectively sleeved on screws of two cam shaft timing gears of the engine and clamp the screws; at least one of the adjustment sleeves is slidably mounted on the fixed plate and is adjustable in its fixed position along the fixed plate. The advantages are that: the cam gear screws can be fixed, so that the two cam gears are mutually locked, the operation of easily disassembling and assembling the timing chain by a single person can be realized, and the maintenance quality and the working benefit are improved.
Although both patent documents disclose a beneficial attempt in the art. However, the problems of simplifying the reworking process of the engine and reducing the disassembly difficulty during reworking are not mentioned.
Disclosure of utility model
The utility model aims to provide a timing chain locking clamp for engine reworking, which can simplify the reworking and reworking process of an engine, reduce the difficulty of disassembling internal components of a cylinder head such as a hydraulic tappet, a phaser, a camshaft and the like, improve the disassembly and assembly efficiency and reduce the maintenance cost.
The utility model relates to a timing chain locking clamp for engine repair, which consists of an air inlet side locking part and an air outlet side locking part, wherein the air inlet side locking part is fixed on a mounting surface of an air inlet side of an engine cylinder cover assembly and locks the air inlet side of a timing chain; the exhaust side locking part is fixed on a mounting surface of the exhaust side of the engine cylinder cover assembly and locks the exhaust side of the timing chain; the air inlet side locking part comprises a first bottom plate, a first upper seat, a first lock catch adjusting rod, a first auxiliary rod and a lock catch, wherein the first upper seat is connected below the first bottom plate; the upper surface of the first upper seat is tightly attached to the lower surface of the first bottom plate, and the upper surface of the first upper seat is fixedly connected with the lower surface of the first bottom plate through two first hexagon socket head cap screws to form a whole.
Further, the timing chain is cooperatively connected with an intake camshaft sprocket and an exhaust camshaft sprocket provided on the engine.
Further, one end of the lock catch of the air inlet side locking part is provided with an integrated lock catch hook.
Further, the first lock adjusting lever and the first auxiliary lever of the intake side locking portion are slidable in the through hole of the first upper seat.
Further, two oblong holes with the same size are formed in the first bottom plate of the air inlet side locking part, and the two oblong holes are respectively fixed on the air inlet side mounting surface of the engine cylinder cover assembly through two bolts; the lock catch of the air inlet side locking part hooks the air inlet side of the timing chain, and the lock nut on the air inlet side locking part is adjusted by a spanner until the air inlet side of the timing chain is locked.
The exhaust side locking part comprises a second bottom plate, a second upper seat, a second lock catch adjusting rod, a second auxiliary rod, a lock catch seat and a lock hook, wherein the second upper seat is connected below the second bottom plate; the other ends of the second lock catch adjusting rod and the second auxiliary rod vertically penetrate through the through hole on the second upper seat and are connected with the second lock catch adjusting rod in a matched mode through nuts to limit; the upper surface of the second upper seat is tightly attached to the lower surface of the second bottom plate, and two second hexagon socket head cap screws are fixedly connected to form a whole.
Further, the latch hook of the exhaust side latch part is composed of two teeth, and the tooth shape of the two teeth is consistent with the chain tooth on the timing chain.
Further, the second lock adjusting lever and the second auxiliary lever of the exhaust side locking portion are slidable in the through hole of the second upper seat.
Further, two kidney-shaped holes with the same size are formed in the second bottom plate of the exhaust side locking part.
Further, two waist-shaped holes of the second bottom plate of the exhaust side locking part are respectively matched with two bolts and are fixed on a mounting surface of the exhaust side of the engine cylinder cover assembly; the lock hook of the exhaust side locking part hooks the exhaust side of the timing chain, and a nut on the exhaust side locking part is adjusted by a wrench until the air inlet side of the timing chain is locked.
The utility model has the beneficial effects that:
When the hydraulic tappet, the phaser, the cam shaft and other cylinder head inner parts of the engine assembly are reworked and repaired by adopting the clamp, after the cylinder cover assembly is disassembled, firstly, the inner side of the air inlet side of the timing chain is hooked by a lock catch of the air inlet side locking part, two bolts penetrate through two kidney-shaped holes on a first base of the air inlet side locking part and are fixed on the mounting surface of the air inlet side of the engine cylinder cover assembly, and a lock nut on the air inlet side locking part is regulated by a spanner until the air inlet side timing chain is locked; then, the inner side of the exhaust side of the timing chain is hooked by a lock catch of the exhaust side locking part, two bolts penetrate through two oblong holes of a second base of the exhaust side timing chain locking body and are fixed on an exhaust side mounting surface of the cylinder cover assembly, and nuts on the exhaust side locking part are adjusted by a wrench until the exhaust side timing chain is locked. The engine assembly is not required to be detached from the whole vehicle, and parts such as a front wheel system, a front cover cap, an engine oil disc, a timing system and the like are not required to be detached from the engine, so that the disassembly and the assembly of the parts in the cylinder head such as the hydraulic tappet, the phaser and the camshaft can be completed, the disassembly and assembly difficulty is obviously reduced, and the disassembly and assembly efficiency is improved.
Drawings
FIG. 1 is a schematic view of the front end structure of a conventional automobile engine;
FIG. 2 is a schematic diagram of a prior art automotive engine timing system;
FIG. 3 is a schematic view of an intake side timing chain locking clamp of the present utility model;
FIG. 4 is a schematic view of an exhaust side timing chain locking clamp of the present utility model;
FIG. 5 is a schematic illustration of a locked engine timing chain of the present utility model;
In the figure (technical features indicated by the marks):
1-cylinder cover assembly, 2-engine oil disc, 3-front end belt, 4-idler pulley, 5-generator assembly, 6-front end belt tensioning wheel, 7-main shaft belt pulley, 8-engine oil pump wire harness, 9-front cover assembly, 10-OCV valve, 11-timing chain, 12-timing chain moving rail assembly, 13-hydraulic tensioner assembly, 14-timing chain rail assembly, 15-camshaft guide rail, 16-crankshaft timing chain wheel, 17-intake camshaft chain wheel and 18-exhaust camshaft chain wheel;
20-an air inlet side locking part, 21-a first bottom plate, 22-a first upper seat, 23-a first lock catch adjusting rod, 24-a first auxiliary rod, 25-a lock catch, 26-a lock nut, 27-a first inner hexagonal cylindrical head screw and 210-a long round hole;
30-exhaust side locking part, 31-second bottom plate, 32-second upper seat, 33-second lock catch adjusting rod, 34-second auxiliary rod, 35-lock catch seat, 36-lock hook, 37-outer hexagonal socket head screw, 38-nut, 39-second inner hexagonal socket head screw, 310-waist-shaped hole.
Detailed Description
The utility model is further described below with reference to the accompanying drawings.
Referring to fig. 3, 4 and 5, a timing chain locking jig for engine repair is composed of an intake side locking portion 20 and an exhaust side locking portion 30, the intake side locking portion 20 being fixed to a mounting surface of an intake side of an engine cylinder cover assembly and locking an intake side of a timing chain 11; the exhaust side locking portion 30 is fixed to a mounting surface of an exhaust side of the engine cylinder cover assembly, and locks an exhaust side of the timing chain 11; the air inlet side locking part 20 comprises a first bottom plate 21, a first upper seat 22 connected below the first bottom plate, a first lock catch adjusting rod 23, a first auxiliary rod 24 clung to the side surface of the first lock catch adjusting rod, and a lock catch 25, wherein the middle part of the lock catch 25 is vertically and fixedly connected with one ends of the first lock catch adjusting rod and the first auxiliary rod, and the other ends of the first lock catch adjusting rod 23 and the first auxiliary rod 24 vertically penetrate through a through hole on the first upper seat 22 and are in matched connection with the first lock catch adjusting rod 23 through a first nut 26 for limiting; the upper surface of the first upper seat 22 is tightly attached to the lower surface of the first bottom plate 21, and is fixedly connected to form a whole through two first hexagon socket head cap screws 27.
The timing chain 11 is coupled to an intake camshaft sprocket 17 and an exhaust camshaft sprocket 18 provided on the engine.
One end of the lock catch 25 of the air inlet side locking part 20 is provided with an integrated lock catch hook.
The first lock adjusting lever 23 and the first auxiliary lever 24 of the intake side locking portion 20 are slidable in the through hole of the first upper seat 22.
The first bottom plate 21 of the air inlet side locking part 20 is provided with two oblong holes 210 with the same size, and the two oblong holes 210 are respectively fixed on the air inlet side mounting surface of the engine cylinder cover assembly through two bolts; the lock 25 of the intake side locking portion 20 hooks the intake side of the timing chain 11, and the lock nut 26 on the intake side locking portion 20 is adjusted with a wrench until the intake side of the timing chain 11 is locked.
The exhaust side locking part 30 comprises a second bottom plate 31, a second upper seat 32 connected below the second bottom plate, a second lock catch adjusting rod 33, a second auxiliary rod 34 clung to the side surface of the second lock catch adjusting rod, a lock catch seat 35, the middle part of which is vertically and fixedly connected with one ends of the second lock catch adjusting rod and the second auxiliary rod, and a lock hook 36 matched with one end part of the lock catch seat, wherein the lock hook is fixed by an outer hexagonal cylindrical head screw 37; the other ends of the second lock catch adjusting rod 33 and the second auxiliary rod 34 vertically penetrate through the through hole on the second upper seat 32 and are connected with the second lock catch adjusting rod 33 in a matched and limited way through the nut 38; the upper surface of the second upper seat 32 is tightly attached to the lower surface of the second bottom plate 31, and is fixedly connected to form a whole through two second hexagon socket head cap screws 39.
The latch hook 36 of the exhaust-side latch portion 30 is formed of two teeth whose tooth shapes coincide with the chain teeth on the timing chain 11.
The second lock adjusting lever 33 and the second auxiliary lever 34 of the exhaust side locking portion 30 are capable of sliding in the through hole of the second upper seat 32.
The second bottom plate 31 of the exhaust side locking portion 30 is provided with two kidney-shaped holes 310 having the same size.
Two waist-shaped holes 310 of the second bottom plate 31 of the exhaust side locking part 30 are respectively matched with two bolts and fixed on the installation surface of the exhaust side of the engine cylinder cover assembly; the lock hook 36 of the exhaust side locking part 30 hooks the exhaust side of the timing chain 11, and the nut 38 on the exhaust side locking part 30 is adjusted by a wrench until the intake side of the timing chain 11 is locked.
In this embodiment, the first latch adjusting lever and the first auxiliary lever of the air intake side locking portion are in a parallel state, and the first latch adjusting lever and the first auxiliary lever can slide vertically and freely in the through hole of the first upper seat; the column head height of two hexagon socket head cap screws connected with the inclined surface side of the first upper seat and the first bottom plate cannot be higher than the installation parallel surface of the first bottom plate.
After the technical scheme of the utility model is used, only one operator is needed, and the disassembly and assembly work of the components in the cylinder head of the automobile engine assembly, such as the hydraulic tappet, the phaser, the camshaft and the like can be completed within thirty minutes, compared with the prior art that two maintenance operators are needed to be matched with each other when the conventional tool is used for disassembly and assembly and replacement of the components in the cylinder head of the automobile engine assembly, such as the hydraulic tappet, the phaser, the camshaft and the like, the disassembly and assembly difficulty is obviously reduced, the disassembly and assembly efficiency is improved, and the maintenance cost is further reduced.
Claims (10)
1. A timing chain locking clamp for engine repair consists of an air inlet side locking part (20) and an air outlet side locking part (30), wherein the air inlet side locking part (20) is fixed on a mounting surface of an air inlet side of an engine cylinder cover assembly and locks the air inlet side of a timing chain (11); the exhaust side locking part (30) is fixed on a mounting surface of an exhaust side of the engine cylinder cover assembly and locks the exhaust side of the timing chain (11); the method is characterized in that: the air inlet side locking part (20) comprises a first bottom plate (21), a first upper seat (22) connected below the first bottom plate, a first lock catch adjusting rod (23), a first auxiliary rod (24) clung to the side surface of the first lock catch adjusting rod, and a lock catch (25) with the middle part vertically and fixedly connected with one end of the first lock catch adjusting rod and one end of the first auxiliary rod, wherein the other ends of the first lock catch adjusting rod (23) and the first auxiliary rod (24) vertically penetrate through a through hole on the first upper seat (22) and are in matched connection limit with the first lock catch adjusting rod (23) through a locking nut (26); the upper surface of the first upper seat (22) is tightly attached to the lower surface of the first bottom plate (21), and is fixedly connected through two first hexagon socket head cap screws (27) to form a whole.
2. The timing chain locking jig for engine repair according to claim 1, wherein: the timing chain (11) is connected with an intake camshaft sprocket (17) and an exhaust camshaft sprocket (18) which are arranged on the engine in a matching way.
3. The timing chain locking jig for engine repair according to claim 1 or 2, characterized in that: one end of a lock catch (25) of the air inlet side locking part (20) is provided with an integrated lock catch hook.
4. The timing chain locking jig for engine repair according to claim 1 or 2, characterized in that: a first lock catch adjusting lever (23) and a first auxiliary lever (24) of the intake side locking portion (20) are slidable in a through hole of the first upper seat (22).
5. The timing chain locking jig for engine repair according to claim 1 or 2, characterized in that: two oblong holes (210) with the same size are formed in a first bottom plate (21) of the air inlet side locking part (20), and the two oblong holes are respectively fixed on an air inlet side mounting surface of the engine cylinder cover assembly through two bolts and the two oblong holes (210); the lock catch (25) of the air inlet side locking part (20) hooks the air inlet side of the timing chain (11), and a lock nut (26) on the air inlet side locking part (20) is adjusted by a spanner until the air inlet side of the timing chain (11) is locked.
6. The timing chain locking jig for engine repair according to claim 2, wherein: the exhaust side locking part (30) comprises a second bottom plate (31), a second upper seat (32) connected below the second bottom plate (31), a second lock catch adjusting rod (33), a second auxiliary rod (34) clung to the side surface of the second lock catch adjusting rod, a lock catch seat (35) with the middle part vertically and fixedly connected with one end of the second lock catch adjusting rod and one end of the second auxiliary rod, and a lock hook (36) matched with one end of the lock catch seat, wherein the lock hook is fixed through an outer hexagonal cylindrical head screw (37); the other ends of the second lock catch adjusting rod (33) and the second auxiliary rod (34) vertically penetrate through the through hole on the second upper seat (32) and are connected with the second lock catch adjusting rod (33) in a matched mode through a nut (38) for limiting; the upper surface of the second upper seat (32) is tightly attached to the lower surface of the second bottom plate (31), and is fixedly connected through two second hexagon socket head cap screws (39) to form a whole.
7. The timing chain locking jig for engine repair according to claim 6, wherein: the latch hook (36) of the exhaust side latch part (30) is composed of two teeth, and the tooth shape of the two teeth is consistent with the chain tooth on the timing chain (11).
8. The timing chain locking jig for engine repair according to claim 7, wherein: the second lock catch adjusting lever (33) and the second auxiliary lever (34) of the exhaust side locking portion (30) are slidable in the through hole of the second upper seat (32).
9. The timing chain locking jig for engine repair according to claim 8, wherein: the second bottom plate (31) of the exhaust side locking part (30) is provided with two waist-shaped holes (310) with the same size.
10. The timing chain locking jig for engine repair according to claim 9, wherein: two kidney-shaped holes (310) of a second bottom plate (31) of the exhaust side locking part (30) are respectively matched with two bolts and are fixed on an exhaust side mounting surface of the engine cylinder cover assembly; the locking hook (36) of the exhaust side locking part (30) hooks the exhaust side of the timing chain (11), and a nut (38) on the exhaust side locking part (30) is adjusted by a wrench until the air inlet side of the timing chain (11) is locked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322636123.1U CN220863794U (en) | 2023-09-27 | 2023-09-27 | Timing chain locking clamp for engine repair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322636123.1U CN220863794U (en) | 2023-09-27 | 2023-09-27 | Timing chain locking clamp for engine repair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220863794U true CN220863794U (en) | 2024-04-30 |
Family
ID=90820396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322636123.1U Active CN220863794U (en) | 2023-09-27 | 2023-09-27 | Timing chain locking clamp for engine repair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220863794U (en) |
-
2023
- 2023-09-27 CN CN202322636123.1U patent/CN220863794U/en active Active
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