CN111409041B - Simple fixture for latch gear and use method - Google Patents
Simple fixture for latch gear and use method Download PDFInfo
- Publication number
- CN111409041B CN111409041B CN202010346496.3A CN202010346496A CN111409041B CN 111409041 B CN111409041 B CN 111409041B CN 202010346496 A CN202010346496 A CN 202010346496A CN 111409041 B CN111409041 B CN 111409041B
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- gear
- handle
- movable nut
- supporting rod
- fixture
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000007704 transition Effects 0.000 claims description 11
- 210000001503 joint Anatomy 0.000 claims description 3
- 230000005489 elastic deformation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 210000003813 thumb Anatomy 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The invention discloses a simple fixture for a latch gear and a use method thereof, wherein the simple fixture comprises a gear, a support rod, a handle, a shaft sleeve and a movable nut, wherein the gear is fixedly connected with the support rod; the outer side of the shaft sleeve is assembled in a screw hole of the movable nut in an interference fit mode, and an inner hole of the shaft sleeve is in clearance fit with the cylinder; the movable nut and the hexagonal prism of the supporting rod are suitable for double offset ring wrenches with the same caliber; the handle comprises a holding rod part and a spanner head fixed at the end part of the holding rod part, and the spanner head is matched with the movable nut; the left end of the cylinder is provided with a first annular groove, and a clamp spring is arranged in the first annular groove; a limiting block is arranged on the movable nut; the gear is coaxial with the support rod. The invention has the advantages of compact structure, convenient use, safe operation and the like.
Description
Technical Field
The invention relates to the technical field of engine accessory assembling tools, in particular to a simple fixture for a latch gear and a using method of the simple fixture.
Background
In the process of assembling the engine, all needed parts are organically combined and assembled, and certain technological requirements are met. Gears are an important component of an engine and play an indispensable role in gear transmission, such as a three-gear, etc., so that the assembly of gears is particularly important. At present, when the oil injection pump gear is assembled, the lock nut is used for locking, and in the process of tightening the lock nut, the whole gear train can rotate along with the increase of moment, so that the lock nut cannot be effectively tightened. At present, a character batch or other sticks are taken to prop against the junction of two gears, so that the gears are blocked and cannot rotate, then the lock nut is tightened, and finally the character batch or the crow bar is taken out, so that the assembly and the tightening are completed.
The existing tooth wheel method is low in efficiency and low in reliability and accuracy. One tooth surface is selected when a straight batch or a crow bar is used, and the gear is rotated to the tooth surface; meanwhile, the rigidity of the square-shaped batch is insufficient, gears cannot be effectively clamped in actual operation, repeated operation is caused, time and labor are wasted, and even other quality and safety accidents are caused. Therefore, the invention is particularly important for a novel simple fixture for the tooth wheel.
The foregoing background is only for the purpose of facilitating an understanding of the principles and concepts of the invention and is not necessarily in the prior art to the present application and is not intended to be used as an admission that such background is not entitled to antedate such novelty and creativity by the present application without undue evidence prior to the present application.
Disclosure of Invention
The invention aims to provide a simple fixture of a latch gear and a use method thereof, wherein the simple fixture is compact in structure, convenient to use and safe to operate.
Therefore, the invention provides a simple fixture for a latch gear and a using method thereof.
Preferably, the present invention may further have the following technical features:
the simple fixture for the latch gear comprises a gear and a support rod, wherein the gear is fixedly connected with the support rod, the simple fixture also comprises a handle, a shaft sleeve and a movable nut, the right part of the support rod is a hexagonal prism, the left part of the support rod is a cylinder, the right end of the support rod is fixedly connected with the gear, and the left end of the support rod is rotationally connected with the handle; the outer side of the shaft sleeve is assembled in a screw hole of the movable nut in an interference fit mode, and an inner hole of the shaft sleeve is in clearance fit with the cylinder; the movable nut and the hexagonal prism of the supporting rod are suitable for double offset ring wrenches with the same caliber; the handle comprises a holding rod part and a spanner head fixed at the end part of the holding rod part, and the spanner head is matched with the movable nut; the left end of the cylinder is provided with a first annular groove, and a clamp spring is arranged in the first annular groove; a limiting block is arranged on the movable nut; the gear is coaxial with the support rod.
Further, the holding rod part is divided into two parts and is in butt joint through a concave-convex wedge way.
Further, the spanner head of the handle is a hexagonal hole or a plum blossom spanner head which is matched with the movable nut.
Further, the novel six-sided prism further comprises a second annular groove and an elastic drag hook device, wherein the second annular groove is further arranged at the right end of the six-sided prism; the elastic drag hook device is arranged on the side surface of the handle spanner head; the elastic drag hook device comprises an elastic flat sheet body and a limiting end arranged at the right end of the sheet body; the left end of the sheet body is fixed on the side face of the handle wrench head, and the limiting end of the right end is abutted against the surface of the hexagonal prism body, so that the limiting end has a tendency of pressing towards the hexagonal prism body.
Further, the limiting end is of a conical structure, the large bottom end of the limiting end is welded and fixed at one end of the sheet body, and the small bottom end of the limiting end is of an arc transition surface.
Further, a positioning hole is formed in the hexagonal prism body, and a powerful magnet is filled in the positioning hole.
Further, the left end of the hexagonal prism body is chamfered, and the distance from the right end point of the chamfer to the right end face of the movable nut is smaller than the width of the spanner head of the handle.
Further, a rubber pad is fixed on the left end face of the cylinder of the supporting rod.
The application method of the simple fixture for the latch gear is that the gear of the fixture is placed at two mutually meshed reversing gears in a gear train, so that the aim of clamping the gear of the gear train is fulfilled, and the simple fixture comprises the following steps:
s1, connecting a spanner head of a handle on a movable nut, then meshing a gear of the tool with one of gears in a gear train, and pushing the handle to roll the gear of the tool on two mutually meshed reversing gears in the gear train so as to respectively mesh the gear of the tool with the two mutually meshed reversing gears in the gear train;
s2, moving the spanner head of the handle to a hexagonal prism body of the supporting rod, wherein the handle and the supporting rod cannot mutually rotate, so that the supporting rod can be clamped, and the aim of limiting the rotation of the gear train is fulfilled
Compared with the prior art, the invention has the beneficial effects that:
(1) The handle can rotate relative to the cylinder of the support rod, so that the gear of the tool can be quickly moved to two meshed reversing gears in the gear train along the gear of the gear train by operation; even if the gear train rotates in the process of moving the gear of the tool, the gear train cannot interfere with the movement of the tool, so that the tool is safe and reliable; and then the handle spanner head is matched with the hexagonal prism body to limit the rotation of the gear, so that the aim of limiting the rotation of the gear train is fulfilled.
(2) The elastic drag hook, the second annular groove and the strong spring are arranged to strengthen the axial movement of the handle, so that the reliability of the tool in use is improved.
(3) The chamfer angle can be used as transition on one hand, so that the efficiency of transferring the handle from the movable nut to the hexagonal prism body is improved; on the other hand, the elastic retractor device can be used for placing the limiting end of the elastic retractor device, and the elastic deformation of the sheet body is relieved.
Drawings
Fig. 1 is a side view of the present invention.
Fig. 2 is a front view of the present invention.
Fig. 3 and 4 show two embodiments of the handle according to the invention.
Fig. 5 is a side view of the handle of the present invention.
Figure 6 is a schematic view of the gear and support bar connection of the present invention.
Fig. 7 is a front view of the movable nut of the present invention.
Fig. 8 is a side view of the moveable nut of the present invention.
Detailed Description
The invention will be described in further detail with reference to the following detailed description and with reference to the accompanying drawings. It should be emphasized that the following description is merely exemplary in nature and is in no way intended to limit the scope of the invention or its applications.
Non-limiting and non-exclusive embodiments will be described with reference to the following drawings, in which like reference numerals refer to like elements unless otherwise specified.
The simple fixture for the latch gear comprises a gear 1, a support rod 3, a handle 2, a shaft sleeve 6 and a movable nut 7, wherein two ends of the support rod 3 are respectively connected with the gear 1 and the handle 2. The right end of the supporting rod 3 is welded and fixed on the gear 1, and the two are coaxial; the left end of the supporting rod 3 is rotatably connected with the handle 2. The supporting rod 3 consists of a hexagonal prism 36 and a cylinder 38 which are coaxial, and a transition limiting surface 35 is arranged between the hexagonal prism 36 and the cylinder 38. The right end of the hexagonal prism 36 is welded and fixed with the gear 1, the left end face extends out of the transition limiting face 35, the left end face of the transition limiting face 35 extends out of the cylinder 38, the diameter of the transition limiting face 35 is smaller than the diameter of an inscribed circle of the hexagonal prism 36, and the diameter of the cylinder 38 is smaller than the diameter of the transition limiting face 35. The shaft sleeve 6 is arranged in a screw hole of the movable nut 7 in an interference fit manner, preferably the nut in the screw hole is milled away, and then the shaft sleeve 6 is arranged on the cylinder 38 of the support rod 3 in a clearance fit manner, so that the combination of the movable nut 7 and the shaft sleeve 6 can rotate relative to the cylinder 38 of the support rod 3. The movable nut 7 and the hexagonal prism 36 of the support rod 3 are applicable to an open spanner or a double offset ring spanner with the same caliber. The handle 2 comprises a holding rod portion 25 and wrench heads (21, 23) fixed at the end portion of the holding rod portion 25, the wrench heads (21, 23) are matched with the movable nut 7, the holding rod portion 25 is divided into two parts and is in butt joint in a concave-convex wedge mode, the holding rod portion 25 can be bent, the lower end of the holding rod portion 25 is rotated, and the holding rod portion can be far away from or close to the gear 1. The spanner heads (21, 23) of the handle 2 are connected to the movable nut 7, and the movable nut 7 can be driven to rotate relative to the cylinder 38 by rotating the handle 2. The end of the holding rod part 25 of the handle 2 is provided with a perforation 22, which is convenient for hanging or placing the tool.
Referring to fig. 6, in order to prevent the movable nut 7 from being separated from the cylinder 38 of the support rod 3, a first ring 34 is provided at the left end of the cylinder 38, and a snap spring 4 is provided in the first ring groove 34, so that the movable nut 7 is limited between the snap spring 4 and the transition limiting surface 35. Referring to fig. 7 to 8, in order to prevent the handle 2 from being separated from the movable nut 7, a limiting block 33 is arranged on the movable nut 7, when the tool is assembled, the handle 2 is firstly installed on the movable nut 7, then the movable nut 7 is installed on the cylinder 38 of the support rod 3, and one side of the movable nut 7 provided with the limiting block 33 is close to the left end face of the cylinder 38.
In the technical proposal, the spanner heads (21, 23) of the handle 2 are hexagonal holes 21 or plum blossom spanner heads which are matched with the movable nuts 7. When the tool is used, the spanner heads (21, 23) of the handle 2 are connected to the movable nut 7, then the gear 1 is moved to the rotating position of the latch gear train, and then the spanner heads (21, 23) of the handle 2 are moved to the hexagonal prism 36 of the support rod 3. Because the handle 2 can rotate relative to the cylinder 38 of the support rod 3, the gear 1 of the tool can be quickly moved to two mutually meshed reversing gears in the gear train along the gear of the gear train by operation; even if the gear train rotates in the process of moving the gear of the tool, the gear train cannot interfere with the movement of the tool, so that the tool is safe and reliable; and the spanner heads (21, 23) of the handle 2 are matched with the hexagonal prism 36 to limit the rotation of the gears, so that the aim of limiting the rotation of the gear train is fulfilled.
Referring to fig. 6, after the wrench heads (21, 23) of the handle 2 are moved onto the hexagonal prism 36 of the support rod 3, the axial movement of the handle 2 cannot be restricted. A second ring 31 is arranged at one end of the support rod 3 close to the gear 1, and an elastic draw hook device is arranged at the side face of the spanner head (21, 23) of the handle 2. The elastic drag hook device comprises a flat sheet body 5 with elasticity and a limiting end 51 arranged at one end of the sheet body 5, and the other end of the sheet body 5 is fixed at the side surface of the spanner head (21, 23) of the handle 2. The sheet 5 extends obliquely downwards, so that the limiting end 51 presses on the surface of the hexagonal prism 36 of the supporting rod 3, and elasticity is generated, so that the limiting end 51 tends to press against the hexagonal prism 36. The limiting end 51 is in a conical structure, the large bottom end of the limiting end is welded and fixed at one end of the sheet body 5, and the small bottom end is an arc transition surface. When the elastic pulling hook is used, the spanner heads (21, 23) of the handle 2 are moved to the hexagonal prism 36 of the supporting rod 3, and the limiting ends 51 of the elastic pulling hook devices arranged on the side surfaces of the spanner heads (21, 23) are clamped into the second annular groove 31, so that the handle 2 obtains a fixed force, and the axial movement of the handle 2 is limited to a certain extent. In order to further improve the stability of the handle 2 on the hexagonal prism 36, after the limiting end 51 of the elastic drag hook device is clamped into the second ring groove 31, a positioning hole 32 is formed in the hexagonal prism 36 corresponding to the wrench head of the handle 2, and a strong magnet is mounted in the positioning hole 32. The inner side of the spanner head is attracted by the powerful magnet, so that the axial movement of the handle 2 can be further prevented.
Chamfering is carried out on the left end of the hexagonal prism 36, the left side of the movable nut 7 is abutted to the limiting block 33, and the distance from the right end point of the chamfering to the right end face of the movable nut 7 is smaller than the width of the spanner head of the handle 2. The chamfer can be used as a transition on one hand to accelerate the efficiency of transferring the handle 2 from the movable nut 7 to the hexagonal prism 36; on the other hand, the elastic retractor device can be used for placing the limiting end 51 of the elastic retractor device, and the elastic deformation of the sheet body 5 is relieved.
A rubber pad 9 is fixed on the left end face of the cylinder 38 of the support rod 3. When the operator holds the tool, the handle 2 can be held at the palm of the hand, and then the operator presses the rubber pad 8 with the thumb.
The application method of the simple fixture for the gear clamping comprises the following steps that a gear 1 of the fixture is placed at two mutually meshed reversing gears in a gear train, so that the purpose of clamping the gear of the gear train is achieved, and the simple fixture comprises the following steps:
s1, connecting spanner heads (21, 23) of a handle 2 on a movable nut 7, then meshing a gear 1 of the tool with one of gears in a gear train, and pushing the handle 2 to roll the gear of the tool on two mutually meshed reversing gears in the gear train so that the gear 1 of the tool is respectively meshed with the two mutually meshed reversing gears in the gear train; since the handle 2 can rotate relative to the cylinder 38 of the support rod 3, the gear 1 of the tool can be quickly moved along the gear of the gear train to the two mutually meshed reversing gears in the gear train by operation. Even the gear train rotates in the process of moving the gear 1 of the tool, the gear train can not interfere with the movement of the tool, and the tool is safe and reliable.
S2, the spanner head of the handle 2 is moved to the hexagonal prism 36 of the support rod 3, and the handle 2 and the support rod 3 cannot mutually rotate at the moment, so that the support rod 3 can be clamped, and the aim of limiting rotation of a gear train is fulfilled.
Those skilled in the art will recognize that numerous variations are possible in light of the above description, and that the examples and figures are presented for the purpose of describing one or more particular embodiments only.
While there have been described and illustrated what are considered to be example embodiments of the present invention, it will be understood by those skilled in the art that various changes and substitutions can be made therein without departing from the spirit of the invention. In addition, many modifications may be made to adapt a particular situation to the teachings of the invention without departing from the central concept thereof as described herein. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the invention and equivalents thereof.
Claims (9)
1. The utility model provides a simple and easy frock of latch gear, includes gear, bracing piece, the gear with bracing piece fixed connection, its characterized in that: the device also comprises a handle, a shaft sleeve and a movable nut, wherein the right part of the supporting rod is a hexagonal prism, the left part of the supporting rod is a cylinder, the right end of the supporting rod is fixedly connected with the gear, and the left end of the supporting rod is rotationally connected with the handle; the outer side of the shaft sleeve is assembled in a screw hole of the movable nut in an interference fit mode, and an inner hole of the shaft sleeve is in clearance fit with the cylinder; the movable nut and the hexagonal prism of the supporting rod are suitable for double offset ring wrenches with the same caliber; the handle comprises a holding rod part and a spanner head fixed at the end part of the holding rod part, and the spanner head is matched with the movable nut; the left end of the cylinder is provided with a first annular groove, and a clamp spring is arranged in the first annular groove; a limiting block is arranged on the movable nut; the gear is coaxial with the support rod.
2. The simplified fixture for a latch gear according to claim 1, wherein: the holding rod part is divided into two parts and is in butt joint in a concave-convex wedge way.
3. The simplified fixture for a latch gear according to claim 1, wherein: the spanner head of the handle is a hexagonal hole or a plum blossom spanner head which is matched with the movable nut.
4. The simplified fixture for a latch gear according to claim 1, wherein: the novel six-sided prism further comprises a second annular groove and an elastic drag hook device, wherein the second annular groove is further arranged at the right end of the six-sided prism; the elastic drag hook device is arranged on the side surface of the handle spanner head; the elastic drag hook device comprises an elastic flat sheet body and a limiting end arranged at the right end of the sheet body; the left end of the sheet body is fixed on the side face of the handle wrench head, and the limiting end of the right end is abutted against the surface of the hexagonal prism body, so that the limiting end has a tendency of pressing towards the hexagonal prism body.
5. The simple fixture for a latch gear according to claim 4, wherein: the limiting end is of a conical structure, the large bottom end of the limiting end is welded and fixed at one end of the sheet body, and the small bottom end of the limiting end is of an arc transition surface.
6. The simple fixture for a latch gear according to claim 4, wherein: and the hexagonal prism body is provided with a positioning hole, and a powerful magnet is filled in the positioning hole.
7. A simple fixture for a latch gear according to any one of claims 1 to 4, wherein: chamfering is carried out at the left end of the hexagonal prism, and the distance from the right end point of the chamfering to the right end face of the movable nut is smaller than the width of the spanner head of the handle.
8. The simplified fixture for a latch gear according to claim 1, wherein: a rubber pad is fixed on the left end face of the cylinder of the supporting rod.
9. The application method of the simple fixture for the latch gear is that the gear of the fixture is placed at two mutually meshed reversing gears in a gear train, so that the aim of clamping the gear of the gear train is fulfilled, and the simple fixture comprises the following steps:
s1, connecting a spanner head of a handle on a movable nut, then meshing a gear of the tool with one of gears in a gear train, and pushing the handle to roll the gear of the tool on two mutually meshed reversing gears in the gear train so as to respectively mesh the gear of the tool with the two mutually meshed reversing gears in the gear train;
s2, the spanner head of the handle is moved to the hexagonal prism body of the supporting rod, and the handle and the supporting rod cannot rotate mutually at the moment, so that the supporting rod can be clamped, and the aim of limiting rotation of the gear train is fulfilled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010346496.3A CN111409041B (en) | 2020-04-27 | 2020-04-27 | Simple fixture for latch gear and use method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010346496.3A CN111409041B (en) | 2020-04-27 | 2020-04-27 | Simple fixture for latch gear and use method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111409041A CN111409041A (en) | 2020-07-14 |
| CN111409041B true CN111409041B (en) | 2024-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010346496.3A Active CN111409041B (en) | 2020-04-27 | 2020-04-27 | Simple fixture for latch gear and use method |
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| Country | Link |
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| CN (1) | CN111409041B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112873130A (en) * | 2021-03-09 | 2021-06-01 | 广西玉柴机器股份有限公司 | Engine gear chamber gear installation method and crankshaft gear rotation stopping tool |
| CN113714969B (en) * | 2021-09-27 | 2024-08-06 | 华能（上海）电力检修有限责任公司 | Tool for disassembling and assembling impeller blade stem nut of TLT movable blade adjustable axial flow fan |
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| CN208961874U (en) * | 2018-09-28 | 2019-06-11 | 广西玉柴机器股份有限公司 | A kind of gear rotation stop card cover device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4157608A (en) * | 1976-12-27 | 1979-06-12 | Tullio Campagnolo | Fixture for special gears, particularly of bicycles |
| US5950294A (en) * | 1998-03-17 | 1999-09-14 | Gibbs; Joseph L. | Tool for immobilizing cam shaft gears |
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| CN111409041A (en) | 2020-07-14 |
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