CN212020626U - Transmission wheel part dismounting tool - Google Patents
Transmission wheel part dismounting tool Download PDFInfo
- Publication number
- CN212020626U CN212020626U CN202020655527.9U CN202020655527U CN212020626U CN 212020626 U CN212020626 U CN 212020626U CN 202020655527 U CN202020655527 U CN 202020655527U CN 212020626 U CN212020626 U CN 212020626U
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- Prior art keywords
- screw
- bolt
- transmission wheel
- support arm
- blind hole
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- 230000005540 biological transmission Effects 0.000 title claims description 31
- 230000002146 bilateral effect Effects 0.000 claims abstract description 3
- 238000004891 communication Methods 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 9
- 238000009434 installation Methods 0.000 description 3
- 230000007774 longterm Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model provides a frock is dismantled to drive wheel part, including support and drive screw, the screw that is used for cooperating drive screw is offered at the center of support, on the support the bilateral symmetry position department of screw be provided with respectively all with the parallel first bolt of axis and the second bolt of screw, drive screw's one end is connected with the terminal shape of the tight head of location clamp, the other end and is positive hexagonal prism, the end of the tight head of location clamp is conical. The utility model discloses a frock is when dismantling the driving wheel part, and whole dismantlement process is steady, do not have in succession, assault, can effectively avoid prior art to adopt the hammering and harm the problem of part easily, has especially protected the fragile locating pin in the drive shaft.
Description
Technical Field
The utility model relates to an engine drive technical field, in particular to frock is dismantled to drive wheel part.
Background
The transmission components such as the gear and the chain wheel of the high-pressure oil pump and the air compressor of the engine are generally arranged on the structural components such as a gear chamber and a chain wheel chamber of the engine through flanges, and then the driving shafts of the high-pressure oil pump and the air compressor are arranged in an interference fit manner with the shaft holes of the gear or the chain wheel. Because timing requirements generally exist, a positioning pin on the driving shaft is matched with a pin groove of a shaft hole of the gear or the chain wheel, and the driving shaft is ensured to be installed at a timing position.
When the high-pressure oil pump and the air compressor are in failure and need to be disassembled for maintenance or replacement, the driving shaft of the high-pressure oil pump and the air compressor is ejected out of the shaft hole of the gear or the chain wheel on the premise of overcoming the interference friction force between the driving shaft and the shaft hole so as to achieve the purpose of disassembly. At present, tools such as a copper hammer and the like are generally adopted to knock the driving shaft out of the shaft hole during disassembly, the disassembly mode is easy to damage parts, particularly positioning pins, and the positioning pins are easy to break off during knocking. Therefore, a tool capable of realizing the damage-free disassembly of the driving wheel needs to be designed so as to meet the actual use requirement.
SUMMERY OF THE UTILITY MODEL
To the problem among the above-mentioned prior art, this application has provided a transmission wheel part dismantles frock, can realize dismantling the transmission wheel part from the transmission shaft stably, woundless, avoids the hammering dismantlement mode that adopts at present to produce the damage to the transmission wheel part.
The utility model discloses a frock is dismantled to drive wheel part, including support and driving screw, the screw that is used for cooperating driving screw is offered at the center of support, on the support the bilateral symmetry position department of screw be provided with respectively all with the parallel first bolt of axis and the second bolt of screw, driving screw's one end is connected with the terminal shape of the tight head of location clamp, the other end and is positive hexagonal prism, the end of the tight head of location clamp is conical.
In one embodiment, the drive screw has a blind hole opened on the end face, the positioning and clamping head is mounted in the blind hole and the conical end of the positioning and clamping head extends out of the blind hole. Through this embodiment, the location presss from both sides tight head and installs and realize dismantling in the blind hole, in the long-term use of frock, is convenient for change the location that takes place wearing and tearing press from both sides tight head.
In one embodiment, the locating and clamping head is in clearance fit with the blind hole. Through this embodiment, clearance fit makes the location clamp head take out and the installation becomes very convenient from the blind hole, does benefit to the maintenance operation to the frock.
In one embodiment, a magnet is embedded at the bottom of the blind hole, and the positioning clamping head is made of a metal material capable of being attracted by the magnet. Through this embodiment, combine the clearance fit between the tight head of location clamp and the blind hole, magnet can prevent that the tight head of location clamp from dropping out from the blind hole.
In one embodiment, the diameter of the part of the positioning and clamping head extending out of the blind hole is larger than the diameter of the blind hole. Through this embodiment, the tight head of location clamp can not need to insert to the hole bottom of blind hole, will fix a position the length that the tight head of clamp stretches into the part in the blind hole and reduce, fix a position the tight head of clamp and can not contact the magnet of hole bottom like this, and drive screw's terminal surface can produce the support to the tight head of location clamp, and protection magnet is not influenced.
In one embodiment, the bracket includes a first support arm and a second support arm that are symmetrical about the central axis of the screw hole, and the first bolt and the second bolt are respectively disposed on the first support arm and the second support arm.
In one embodiment, the first support arm and the second support arm are both provided with an opening extending radially outward relative to the center of the screw hole, the bolt is inserted through the opening, and the width of the opening is not smaller than the diameter of the rod part of the bolt but smaller than the diameter of the head part of the bolt. Through the embodiment, the position of the bolt in the radial direction can be adjusted along the opening, so that the driving wheel with different specifications or threaded process holes in different positions on the driving wheel can be adapted.
In one embodiment, the opening penetrates the end faces of the first and second support arms radially outward to the outside of the communication. Through the embodiment, the bolt can be directly placed into the opening from the opening at the mouth parts of the tail ends of the first support arm and the second support arm, and the bolt is convenient to mount and dismount.
In one embodiment, the drive screw and the locating clamp head each have a diameter less than the diameter of the shaft bore in the centre of the drive wheel assembly.
The above-mentioned technical characteristics can be combined in various suitable ways or replaced by equivalent technical characteristics as long as the purpose of the invention can be achieved.
The utility model provides a pair of frock is dismantled to drive wheel part compares with prior art, possesses following beneficial effect at least:
the utility model discloses a frock utilizes drive screw to support the transmission shaft, when rotatory drive screw, can utilize the threaded connection structure between the screw on drive screw and the support with support, bolt and the whole outside pulling out of axial along the transmission shaft of drive wheel. The whole disassembly process is stable, continuous and free from impact, the problem that parts are easy to damage due to hammering in the prior art can be effectively solved, and particularly, a fragile positioning pin on a driving shaft is protected.
Drawings
The present invention will be described in more detail hereinafter based on embodiments and with reference to the accompanying drawings. Wherein:
fig. 1 shows an axial assembly schematic view of the disassembly tool structure of the present invention;
in the drawings, like parts are provided with like reference numerals. The drawings are not to scale.
Reference numerals:
1-bracket, 10-screw hole, 11-opening, 12-first supporting arm, 13-second supporting arm, 14-first bolt, 15-second bolt, 2-driving screw, 21-blind hole, 22-magnet and 3-positioning clamping head.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in the attached drawing figure 1, the driving wheel component dismounting tool comprises a support 1 and a driving screw 2, a screw hole 10 used for being matched with the driving screw 2 is formed in the center of the support 1, a first bolt 14 and a second bolt 15 which are parallel to the axis of the screw hole 10 are respectively arranged at the symmetrical positions of the two sides of the screw hole 10 on the support 1, one end of the driving screw 2 is connected with a positioning clamping head 3, the tail end of the other end of the driving screw is in a regular hexagonal prism shape, and the tail end of the positioning clamping head 3 is in a conical shape.
Specifically, the driving wheel component includes a gear, a sprocket, etc. mounted on the driving shaft, and the driving wheel component and the driving shaft are usually in interference fit, so that the interference friction force needs to be overcome when disassembling. The traditional method is that hammering is adopted to knock the driving wheel off the transmission shaft, so that parts are easily damaged.
In the tool, the first bolt 14 and the second bolt 15 can rotate relative to the bracket 1, for example, a hole for the bolt to pass through is formed in the bracket 1. Aligning a positioning clamping head 3 on a driving screw 2 to the end surface of a transmission shaft, screwing the tail ends of a first bolt 14 and a second bolt 15 into a threaded process hole on the end surface of the transmission wheel, and then screwing the driving screw 2 out of the end surface of the transmission shaft until the cylindrical tail end of the positioning clamping head 3 is matched with a process taper hole on the end surface of the transmission shaft; then, the driving screw 2 is continuously rotated, at the moment, because the driving screw 2 is already abutted against the end face of the transmission shaft through the positioning clamping head 3, the driving screw 2 cannot move forwards, the whole of the bracket 1, the first bolt 14, the second bolt 15 and the transmission wheel is reversely and axially pulled out towards the outside of the transmission shaft under the action of the thread structure, and the driving screw 2 is rotated until the transmission wheel is completely pulled out of the transmission shaft and transferred onto the driving screw 2; and finally, screwing the first bolt 14 and the second bolt 15 out of the threaded process holes on the driving wheel, and taking down the driving wheel to finish the disassembly of the driving wheel.
When the drive screw 2 is rotated, a tool such as a wrench is engaged with the regular hexagonal prism portion at the tip of the drive screw 2.
Since the drive wheel is first transferred from the drive shaft to the drive screw 2 during the removal, the diameters of the drive screw and the positioning clamping head 3 need to be defined. Preferably, the diameter of the driving screw 2 and the diameter of the positioning and clamping head 3 are both smaller than the diameter of the shaft hole in the center of the driving wheel part.
In one embodiment, the drive screw 2 has a blind hole 21 formed in the end surface thereof, the positioning and clamping head 3 being mounted in the blind hole 21 and the conical end of the positioning and clamping head 3 protruding out of the blind hole 21.
Specifically, in the use process of the tool, the transmission shaft is fixed and the screw rod is driven to rotate, so that the positioning clamping head is in different motion states, abrasion is inevitably generated between the positioning clamping head and the screw rod, and the positioning clamping head is a quick-wear part. Therefore, the positioning clamping head 3 is arranged in the blind hole 21, so that the detachable installation is realized, and the worn positioning clamping head 3 is convenient to replace in the long-term use process of the tool.
In order to further facilitate the installation and removal of the positioning and clamping head 3, the positioning and clamping head 3 is preferably in clearance fit with the blind hole 21.
In one embodiment, a magnet 22 is embedded at the bottom of the blind hole 21, and the positioning and clamping head 3 is made of a metal material capable of being attracted by the magnet 22.
In particular, the magnet 22 prevents the positioning and clamping head 3 from falling out of the blind hole 21.
In one embodiment, the diameter of the portion of the positioning and clamping head 3 protruding out of the blind hole 21 is larger than the diameter of the blind hole 21.
Specifically, the positioning clamping head 3 does not need to be inserted into the bottom of the hole of the blind hole 21, the length of the part of the positioning clamping head 3 extending into the blind hole 21 is reduced, the bottom of the positioning clamping head 3 does not contact the magnet 22 at the bottom of the hole, and the end face of the driving screw 2 can support the part of the positioning clamping head 3 extending out of the blind hole 21, so that the magnet 22 can be protected from being influenced on the premise of not influencing the normal function of the positioning clamping head 3.
In one embodiment, the bracket 1 includes a first support arm 12 and a second support arm 13 that are symmetrical about a central axis of the screw hole 10, and a first bolt 14 and a second bolt 15 are respectively disposed on the first support arm 12 and the second support arm 13.
Specifically, according to actual conditions, a plurality of supporting arms can be arranged on the support 1, the supporting arms are evenly distributed along the circumferential direction relative to the center of the screw hole 10, and bolts are correspondingly arranged on the supporting arms, so that more connecting points exist between the tool and the driving wheel, and the connection with the driving wheel is more stable; meanwhile, the axis of the central shaft hole of the driving wheel and the axis of the transmission shaft can be kept on the same straight line, the driving wheel is prevented from having the tendency of deflection, and further, extra friction force is prevented from being generated between the driving wheel and the transmission shaft.
In one embodiment, the first support arm 12 and the second support arm 13 are both provided with an opening 11 extending radially outward relative to the center of the screw hole 10, the bolt is inserted through the opening 11, and the width of the opening 11 is not smaller than the diameter of the shaft portion of the bolt but smaller than the diameter of the head portion of the bolt.
Specifically, as shown in the drawings, the opening 11 is elongated and the length of the opening 11 is greater than the diameter of the bolt, so that the bolt can be adjusted in the radial direction along the opening 11, and thus the driving wheel can adapt to driving wheels of different specifications or threaded process holes in different positions on the driving wheel. Meanwhile, as shown in fig. 1, when the bolt is installed in the opening 11, the rod part of the bolt faces to the side of the positioning clamping head 3, and the head part of the bolt faces to the side of the end of the regular hexagonal prism of the driving screw rod 2, so that the head part of the bolt can be clamped on the edge of the opening 11 and the driving wheel can not provide tension.
Preferably, the opening 11 penetrates the end faces of the first support arm 12 and the second support arm 13 radially outward to the outside of the communication. The first support arm 12 and the second support arm 13 are convenient to be installed in the opening 11, and bolts are directly put into the opening 11 from the opening 11 at the mouths of the ends of the first support arm 12 and the second support arm 13.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that features described in different dependent claims and herein may be combined in ways different from those described in the original claims. It is also to be understood that features described in connection with individual embodiments may be used in other described embodiments.
Claims (9)
1. The utility model provides a frock is dismantled to drive wheel part, its characterized in that includes support and drive screw, the screw that is used for cooperating drive screw is seted up at the center of support, on the support the bilateral symmetry position department of screw be provided with respectively all with the parallel first bolt and the second bolt of axis of screw, drive screw's one end is connected with the terminal shape of the tight head of location clamp, the other end is regular hexagonal prism, the end of the tight head of location clamp is conical.
2. The transmission wheel part disassembling tool according to claim 1, wherein a blind hole is formed in a tail end face of the driving screw, the positioning clamping head is mounted in the blind hole, and the conical tail end of the positioning clamping head extends out of the blind hole.
3. The transmission wheel component disassembling tool according to claim 2, wherein the positioning clamping head is in clearance fit with the blind hole.
4. The transmission wheel component dismounting tool according to claim 2 or 3, wherein a magnet is embedded at the bottom of the blind hole, and the positioning clamping head is made of a metal material capable of being attracted by the magnet.
5. The transmission wheel component disassembling tool according to claim 4, wherein the diameter of the part, extending out of the blind hole, of the positioning clamping head is larger than that of the blind hole.
6. The transmission wheel component disassembling tool according to claim 1, wherein the support includes a first support arm and a second support arm symmetrical with respect to a central axis of the screw hole, and the first bolt and the second bolt are respectively provided on the first support arm and the second support arm.
7. The transmission wheel part dismounting tool according to claim 6, wherein the first support arm and the second support arm are both provided with openings extending radially outward relative to the center of the screw hole, the bolt is inserted through the openings, and the width of each opening is not less than the diameter of the rod part of the bolt but less than the diameter of the head part of the bolt.
8. The transmission wheel component dismounting tool according to claim 7, wherein the opening penetrates through the end faces of the first support arm and the second support arm radially outwards to the outside of communication.
9. The transmission wheel component disassembling tool according to claim 1, wherein the diameters of the driving screw and the positioning and clamping head are smaller than the diameter of a shaft hole in the center of the transmission wheel component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020655527.9U CN212020626U (en) | 2020-04-26 | 2020-04-26 | Transmission wheel part dismounting tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020655527.9U CN212020626U (en) | 2020-04-26 | 2020-04-26 | Transmission wheel part dismounting tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212020626U true CN212020626U (en) | 2020-11-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020655527.9U Expired - Fee Related CN212020626U (en) | 2020-04-26 | 2020-04-26 | Transmission wheel part dismounting tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212020626U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114800371A (en) * | 2021-01-18 | 2022-07-29 | 北京福田康明斯发动机有限公司 | Ejection tool |
-
2020
- 2020-04-26 CN CN202020655527.9U patent/CN212020626U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114800371A (en) * | 2021-01-18 | 2022-07-29 | 北京福田康明斯发动机有限公司 | Ejection tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201127 |