CN220972252U - Dismounting tool for engine valve lock clamp - Google Patents
Dismounting tool for engine valve lock clamp Download PDFInfo
- Publication number
- CN220972252U CN220972252U CN202322140504.0U CN202322140504U CN220972252U CN 220972252 U CN220972252 U CN 220972252U CN 202322140504 U CN202322140504 U CN 202322140504U CN 220972252 U CN220972252 U CN 220972252U
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- Prior art keywords
- valve collet
- guide
- valve
- engine valve
- guide structure
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- 239000000463 material Substances 0.000 claims abstract description 5
- 239000000446 fuel Substances 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- 230000010485 coping Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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Abstract
The utility model relates to an engine valve collet dismounting tool, which relates to the technical field of engine assembly and comprises a guide structure, a fixing structure sleeved at the end part of the guide structure and a press-fitting structure sleeved at the middle part of the guide structure. The valve collet dismounting tool disclosed by the utility model can be used for conveniently and quickly dismounting the valve collet, has the advantages of simple and reliable structure and convenience in carrying and use, is convenient for researching and developing and coping with the operation requirement related to the valve collet in the after-sales service stage, avoids dismounting excessive other parts, and saves the labor hour and the cost for producing auxiliary materials.
Description
Technical Field
The utility model relates to the technical field of engine assembly, in particular to an engine valve collet dismounting tool.
Background
In the valve mechanism of the engine, the valve lock clamp is used for clamping the valve, so that the valve is normally opened and returned under the action of the rocker arm and the valve spring, and the air inlet and the air exhaust of the engine cylinder are realized. In the running process of the engine, the rocker arm applies pressure to the top of the valve through the valve bridge to open the valve, and at the moment, the valve collet drives the valve spring upper seat to compress the valve spring; when the valve is closed, the valve spring rebounds, the elastic force is transmitted to the valve through the valve lock clamp and the valve spring upper seat, and the valve is restored to the closed state along with the rebound action of the spring. Failure of the valve collet to properly assemble will seriously affect the proper operation of the engine and even failure of the valve to drop and strike the piston may occur, resulting in damage to the engine, and therefore, accuracy of the installation of the valve collet is important.
When the valve lock clamp on the existing engine cylinder cover is disassembled and assembled, the valve spring and the valve spring upper seat are arranged on the engine cylinder cover, the valve lock clamp is arranged in the spring upper seat, the inner protrusion is clamped into the valve rod groove, the outer ring of the valve lock clamp is required to be attached to the inner ring of the valve spring upper seat, and the problems of protrusion, deflection, falling, missing, redundancy and the like cannot occur in the installation of the valve lock clamp.
When the valve collet is installed, the valve spring upper seat is pressed by means of external force, the valve spring is compressed until the collet clamping grooves on the valve rod are exposed, the external force is maintained at the moment, the two collet clamps are clamped into the collet clamping grooves, the external force is slowly removed after the correct position of the valve collet is confirmed, the valve spring upper seat is enabled to be locked up to the position of the valve collet, at the moment, whether the valve collet has the problems of protruding, skewing, falling, missing, superfluous and the like is checked, and after the valve is confirmed to be correct, the valve is knocked by a nylon hammer, so that the installation is ensured.
When the engine is assembled, the valve collet is pressed by large professional equipment, however, at the research and development and after-sales service stage, no tool for mounting the valve collet is labor-saving and efficient at present, so that in the research and development stage and the after-sales service process, once the condition that the valve collet needs to be disassembled and assembled is met, the cylinder cover can be disassembled at present, and the scale beam tools are used for disassembling and assembling one by one, so that the valve collet is very inconvenient for staff, and meanwhile, the cost of manpower and auxiliary materials for production is increased.
Disclosure of utility model
The utility model aims to provide an engine valve collet dismounting tool which is used for simultaneously mounting four groups of valve collet into a valve stem collet clamping groove or dismounting the collet from the original position and has the advantages of simple and reliable structure and convenience in carrying and use.
In order to achieve the above purpose, the technical scheme of the utility model provides an engine valve collet dismounting tool, which comprises a guide structure, a fixing structure sleeved at the end part of the guide structure and a press-fitting structure sleeved at the middle part of the guide structure.
Preferably, the guide structure is equipped with a ball bearing and a hexagonal flange face nut.
Preferably, the guiding structure is connected with the fixing structure through glue.
Preferably, the fixing structure is provided with bolts which can be connected with the bolt holes of the oil sprayer pressing plate and the fixing holes of the oil sprayer wire harness in a penetrating mode.
Preferably, the bottom of the guide structure is provided with a guide cylinder, the outer diameter of the guide cylinder is consistent with the inner diameter specification of the oil sprayer hole of the cylinder cover, and the height of the guide cylinder is smaller than the depth of the oil sprayer hole.
Preferably, the length of the threaded end of the guide structure is not less than the compression stroke of the valve spring.
Preferably, a threaded screw rod is arranged at the top of the guide structure.
Preferably, the inner diameters of the middle through holes of the fixing structure and the press-fit structure are consistent with the outer diameter of the guide section of the guide structure.
Preferably, 4 valve collet material placing and taking taper holes are formed in the front face of the press-fit structure, and 4 valve spring upper seat matching holes are formed in the back face of the press-fit structure.
Compared with the prior art, the valve collet dismounting tool has the beneficial effects that: the valve collet dismounting tool disclosed by the utility model can be used for conveniently and quickly dismounting the valve collet, has the advantages of simple and reliable structure and convenience in carrying and use, is convenient for researching and developing and coping with the operation requirement related to the valve collet in the after-sales service stage, avoids dismounting excessive other parts, and saves the labor hour and the cost for producing auxiliary materials.
Drawings
FIG. 1 is a schematic illustration of an engine valve collet assembly and disassembly tool assembly application of the present utility model;
FIG. 2 is a schematic view of an engine valve collet assembly and disassembly tool assembly according to the present utility model;
FIG. 3 is a schematic view of a guide structure of an engine valve collet assembly and disassembly tool according to the present utility model;
FIG. 4 is a schematic view of a press-fit structure in an engine valve collet assembly and disassembly tool according to the present utility model;
fig. 5 is a schematic structural view of a fixing structure in an engine valve collet assembly and disassembly tool according to the present utility model.
Reference numerals: 1. a guide structure; 2. a fixed structure; 3. and (5) a press-fitting structure.
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.
The utility model discloses an engine valve collet dismounting tool. The tool is integrally connected with a cylinder cover through bolts and comprises a fixing structure 2, a press-fitting structure 3 and a guiding structure 1, wherein the guiding structure 1 and the fixing structure 2 are bonded together through glue, the fixing structure 2 is fastened to a bolt hole of a pressing plate of an oil injector and a fixing hole of a wiring harness of the oil injector through bolts, the fixing structure 2 is fixed at a corresponding screw hole of the cylinder cover through bolts, the press-fitting structure 3 is sleeved on the guiding structure 1, and a ball bearing and a hexagonal flange face nut are additionally arranged and assembled on the guiding structure 1.
The bottom of the guide structure 1 is provided with a guide cylinder, the outer diameter of the cylinder at the lower end of the guide structure 1 is consistent with the inner diameter specification of a cylinder cover fuel injector hole, the height of the guide structure is smaller than the depth of the fuel injector hole, and the length of a thread section of the guide structure 1 is not smaller than the compression stroke of a valve spring; the top of the guide structure 1 is provided with a threaded screw rod;
The inner diameter of the middle through hole of the fixed structure 2 is consistent with the outer diameter of the guide section of the guide structure 1, and the positions of the other 2 through holes are consistent with the positions of the bolt holes of the pressing plate of the oil injector and the fastening fixed holes of the wire harness of the oil injector on the cylinder cover;
The inner diameter of the middle through hole of the press-mounting structure 3 is consistent with the outer diameter of the guide section 1 of the guide structure, 4 taper holes for placing (taking) the valve lock clamp are formed in the front face of the press-mounting structure 3, 4 taper holes for placing the valve lock clamp are formed in the front face 4 of the press-mounting structure 3, 4 valve spring upper seat matching holes with different specifications are formed in the back face of the press-mounting structure 3, the inner diameter of the 4 holes in the back face of the press-mounting structure is consistent with the outer diameter of the valve spring upper seat, the holes are deeply divided into two types and used for making up the height difference of the assembly face of the valve rotating mechanism, the level of the assembly face of the press-mounting structure 3 is ensured in the using process, and a positioning hole 1 and an assembly hole 2 are additionally formed, so that the placing direction of the press-mounting structure 3 is rapidly determined, and the depth difference of the valve spring upper seat matching holes in the back face of the press-mounting structure 3 is consistent with the height difference of the valve springs for air intake and exhaust.
The dismounting tool for the valve collet can simultaneously dismount and mount the valve collet of the single cylinder 4 groups, improves the operation efficiency, and has the advantages of simple and reliable structure and convenience in carrying and use. The valve collet assembly and disassembly tool is used for installing the valve collet into a valve stem collet clamping groove of an engine or removing the valve collet from the valve stem collet clamping groove.
The application principle of the utility model is as follows:
When the valve collet assembling and disassembling tool is used for assembling the valve collet, the tool fixing structure 2 and the guide structure 1 are fixed on the cylinder cover through bolts, the press-mounting structure 3 is sleeved with the guide structure 1 and is placed on the valve spring upper seat, the position of the press-mounting structure 3 is adjusted to be in a horizontal state, the bearing sleeve-penetrating guide structure 1 is placed on the plane of the press-mounting structure 3, the hexagonal flange face nut is used for gradually rotating until the bottom surface of the nut contacts with the top surface of the bearing, at the moment, the valve collet is thrown into a gap between a valve rod and the valve spring upper seat through a feeding cone of the press-mounting structure 3 according to a required assembling direction, the hexagonal flange face nut is screwed by a spanner until a corresponding valve collet clamping groove on the valve rod is exposed, at the moment, the press-mounting structure 3 is upwards screwed by reversely screwing the nut, and the valve collet fixing protrusion is observed to fall into the corresponding clamping groove of the valve rod, so that the assembly is completed.
When the valve collet dismounting tool is used for dismounting the valve collet, the tool fixing structure 2 and the guide structure 1 are fixed on the cylinder cover through bolts, the press-mounting structure 3 is sleeved on the valve spring upper seat, the position of the press-mounting structure 3 is adjusted to be in a horizontal state, the bearing sleeve-penetrating guide structure 1 is arranged on the press-mounting structure 3 plane, the hexagonal flange face nut is used for gradually rotating until the bottom surface of the nut contacts with the top surface of the bearing, the hexagonal flange face nut is used for screwing the press-mounting structure 3 downwards until the corresponding valve collet clamping groove on the valve rod is exposed, and the valve collet is taken out one by using a magnet to finish dismounting.
Finally, it should be noted that: the foregoing description of the preferred embodiments of the present utility model is not intended to be limiting, but rather, although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.
Claims (8)
1. The dismounting tool for the engine valve collet is characterized by comprising a guide structure (1), a fixing structure (2) sleeved at the end part of the guide structure (1) and a press-fitting structure (3) sleeved at the middle part of the guide structure (1); the guide structure (1) is equipped with a ball bearing; 4 valve collet material placing and taking taper holes are formed in the front face of the press-fit structure (3), and 4 valve spring upper seat matching holes are formed in the back face of the press-fit structure.
2. An engine valve collet assembly and disassembly tool according to claim 1, wherein the guide structure (1) is fitted with a hexagonal flange face nut.
3. An engine valve collet assembly and disassembly tool according to claim 2, wherein the guiding structure (1) is connected to the fixing structure (2) by glue.
4. An engine valve collet assembly and disassembly tool according to claim 3, wherein the fixing structure (2) is provided with bolts which can be connected with the bolt holes of the fuel injector pressing plate and the fixing holes of the fuel injector wire harness.
5. The engine valve collet assembly and disassembly tool according to claim 4, wherein a guide cylinder is arranged at the bottom of the guide structure (1), the outer diameter of the guide cylinder is consistent with the inner diameter specification of a cylinder cover oil injector hole, and the height of the guide cylinder is smaller than the depth of the oil injector hole.
6. An engine valve collet assembly and disassembly tool according to claim 5, wherein the threaded end length of the guide structure (1) is not less than the compression stroke of the valve spring.
7. The engine valve collet assembly and disassembly tool according to claim 6, wherein the top of the guide structure (1) is provided with a threaded screw.
8. The engine valve collet assembly and disassembly tool according to claim 7, wherein the inner diameters of the middle through holes of the fixing structure (2) and the press-fit structure (3) are consistent with the outer diameter of the guide section of the guide structure (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322140504.0U CN220972252U (en) | 2023-08-09 | 2023-08-09 | Dismounting tool for engine valve lock clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322140504.0U CN220972252U (en) | 2023-08-09 | 2023-08-09 | Dismounting tool for engine valve lock clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220972252U true CN220972252U (en) | 2024-05-17 |
Family
ID=91066947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322140504.0U Active CN220972252U (en) | 2023-08-09 | 2023-08-09 | Dismounting tool for engine valve lock clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220972252U (en) |
-
2023
- 2023-08-09 CN CN202322140504.0U patent/CN220972252U/en active Active
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