CN218226414U - One-item four-claw puller - Google Patents
One-item four-claw puller Download PDFInfo
- Publication number
- CN218226414U CN218226414U CN202220780393.2U CN202220780393U CN218226414U CN 218226414 U CN218226414 U CN 218226414U CN 202220780393 U CN202220780393 U CN 202220780393U CN 218226414 U CN218226414 U CN 218226414U
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- CN
- China
- Prior art keywords
- claw
- puller
- mounting bracket
- groups
- pulling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 210000000078 claw Anatomy 0.000 claims abstract description 51
- 230000002787 reinforcement Effects 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims 2
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 5
- 241000883990 Flabellum Species 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- 230000017105 transposition Effects 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a four-jaw puller, include mounting bracket, screw ejector pin and draw the claw, the middle part of mounting bracket is run through and has been seted up the internal thread hole, screw ejector pin threaded connection be in the internal thread hole of mounting bracket, the lateral wall of mounting bracket is provided with four groups draw the claw, four groups draw the claw round the axis in mounting bracket internal thread hole is the circumference and arranges. The fan puller is suitable for overhauling and disassembling seven fans with single fan blades, the disassembling efficiency of the fans is improved, and meanwhile, the four groups of pulling claws enable the puller to be stressed uniformly in the working process, so that the eccentric jamming or pulling damage of workpieces cannot be caused.
Description
Technical Field
The utility model relates to a machinery overhauls dismantlement field, specifically is a four-jaw top puller.
Background
The top puller is also called as a puller, a wheel puller, a puller and a claw puller, commonly called as a puller and a claw puller, mainly comprises a mounting rack, an ejector rod and a claw puller, is common to two claws and three claws, has the main dimensions of claw puller opening distance and claw pulling extension distance to adapt to workpieces with different radial and different axial mounting sizes, is a tool frequently used in mechanical maintenance, has the advantages of compact structure, flexible use, light weight, small volume, convenient carrying, no field limitation and the like, is widely used for disassembling workpieces fixed on a shaft or a pipe, such as a disc, a flange, a belt pulley, a gear, a bearing and the like in various mechanical equipment, and when the tool is used, the top of a screw rod is positioned at the top of the shaft end and hooked on the workpiece by the claw puller, the position of the claw puller is adjusted to be hooked on the outer edge of the workpiece, and then the screw rod with a screw thread buckle is rotated to drive the claw puller to slowly move and pull out from the shaft workpiece or the pipe along the axial direction to the end part, so that the top puller can be in a straight line static state when the tool works, and can also be used for hoisting, lifting force, stretching, straightening, pressure tests and the like.
The above-described ejector is available for the removal of the fan blades of the cooling fan, but for the seven-blade single-blade fan, the two-claw or three-claw ejector available on the market cannot be applied, so that it is difficult to remove the seven-blade single-blade fan, and it becomes difficult to repair and replace the seven-blade fan.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's not enough, provide a four-jaw puller, dismantle the flabellum of seven leaf odd number flabellum fans, have the even and convenient easy advantage of using of atress.
The purpose of the utility model is realized through the following technical scheme: the utility model provides a four-jaw top puller, includes mounting bracket, screw ejector pin and draws the claw, the middle part of mounting bracket is run through and has been seted up the internal thread hole, screw ejector pin threaded connection be in the internal thread hole of mounting bracket, the lateral wall of mounting bracket is provided with four groups draw the claw, four groups draw the claw round the axis in mounting bracket internal thread hole is the circumference and arranges.
The effect of adopting above-mentioned technical scheme does, is applicable to the maintenance dismantlement of seven single flabellum fans, has improved the dismantlement efficiency of fan, and the setting up of four groups of claws that draws makes the puller atress even at the in-process of work simultaneously, can not cause the eccentric jam of work piece or the condition of pulling, drawing damage.
Further, the mounting bracket includes the mounting bracket disc, the lateral wall of mounting bracket disc is provided with four groups support arms, four groups all be connected with on the support arm draw the claw, the support arm is kept away from the reserve tank has been seted up to the one end of mounting bracket disc, the top adaptation that draws the claw is in the reserve tank, fixing bolt is worn to be equipped with to one side of support arm, fixing bolt's afterbody is passed and is drawn the claw and extend to the outside and the threaded connection of support arm have the nut.
Further, the top welding of mounting bracket disc has the reinforcement nut, the screw hole of reinforcement nut with the internal thread hole bearing setting of mounting bracket, the screw thread ejector pin with reinforcement nut threaded connection.
Further, the reinforcing nut is M22 in model.
Further, the adjacent interval angles of the four groups of pulling claws are sequentially 51 degrees, 103 degrees and 103 degrees.
Further, the model of the nut is M12.
The beneficial effects of the utility model are that:
1. the fan puller is suitable for overhauling and disassembling seven fans with single fan blades, the disassembling efficiency of the fans is improved, and meanwhile, the four groups of pulling claws enable the puller to be stressed uniformly in the working process, so that the eccentric jamming or pulling damage of workpieces cannot be caused.
2. In the maintenance tool of the fan, the four-claw puller has relatively small volume, can realize quick disassembly, packaging and convenient carrying, and is particularly suitable for fields with changed overhaul places.
3. Adopt split type structure, convenient to detach deposits or transports to ability fast assembly improves the maintenance efficiency to the flabellum.
4. Compared with the traditional puller, the lifter has the advantages of simple structure and low damage probability.
Drawings
FIG. 1 is a perspective view of a four-jaw ejector according to the present invention;
FIG. 2 is a view showing a state of the four-jaw ejector of the present invention;
FIG. 3 is a top view of FIG. 2;
FIG. 4 is a front view of FIG. 2;
in the figure, 1-a threaded ejector rod, 2-a reinforcing nut, 3-a mounting rack disc, 4-a nut, 5-a fixing bolt, 6-a support arm, 7-a pulling claw, 8-a ratchet wrench, 9-a sleeve and 10-a fan blade.
Detailed Description
The technical solution of the present invention is described in further detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following description.
As shown in fig. 1 to 4, a four paws top extractor, including the mounting bracket, screw ejector rod 1 with draw claw 7, the internal thread hole has been seted up in the middle part of mounting bracket through, 1 threaded connection of screw ejector rod is in the internal thread hole of mounting bracket, the lateral wall of mounting bracket is provided with four groups and draws claw 7, four groups draw claw 7 to be the circumference around the axis in mounting bracket internal thread hole and arrange, be applicable to seven odd flabellum fans's maintenance dismantlement, the dismantlement efficiency of fan has been improved, four groups draw claw 7's setting simultaneously makes the top extractor atress at the in-process of work even, can not cause the eccentric bite or the strain of work piece, the condition of pulling out, the mounting bracket includes mounting bracket disc 3, the lateral wall of mounting bracket disc 3 is provided with four groups support arm 6, all be connected with on four groups support arm 6 and draw claw 7, support arm 6 keeps away from the one end of mounting bracket disc 3 and has seted up the reservation groove, the top adaptation of drawing claw 7 is in the reservation groove, one side of support arm 6 wears to be equipped with fixing bolt 5, fixing bolt 5's afterbody passes and draws claw 7 to extend to the outside and is connected with support arm 4 that screw hole has the nut 4, the enhancement nut 2 of reinforcing nut 2, the top of reinforcing disc 3 with the welding of the coaxial threaded connection of the internal thread hole of mounting bracket 2, the top extractor, the top of the process of the mounting bracket 2, the top extractor is the ejector rod for the internal thread hole of the internal thread hole, the process of the ejector rod assembly of the ejector rod 2: screwing the threaded mandril 1 into the mounting rack disc 3 of the mounting rack from the internal threaded hole, then respectively mounting the four pulling claws 7 on the four support arms 6, specifically, firstly inserting the top of the pulling claw 7 into a reserved groove of the support arm 6, enabling bolt holes of the pulling claw 7 to correspond to mounting holes on the side walls of the support arm 6, then enabling the fixing bolts 5 to penetrate through the support arm 6 from the mounting holes, enabling the fixing threads 5 to penetrate through threaded holes, and finally screwing the nuts 4 on the fixing threads 5 to complete the mounting of the pulling claws 7, wherein the tightness of the pulling claw 7 is determined by the flexible rotation of the pulling claw 7, and all parts are flexibly assembled without the phenomena of butt joint and over looseness; thereby accomplished the installation of four-jaw puller, its installation is simple swift, has saved the installation time of puller, secondly, and the four-jaw puller part of this application is less, simple structure for pneumatic or electronic puller, consequently, damages the probability and is lower.
Further, as shown in fig. 1 and fig. 2, the adjacent interval angles of the four groups of pulling claws 7 are 51 °, 103 ° and 103 ° in sequence, wherein the using method for detaching the fan blades by the four-claw extractor comprises the following steps: firstly, selecting a fixed point of a pulling claw 7 of the puller, wherein the adjacent spacing angles of four pulling claws 7 are 51 degrees, 103 degrees and 103 degrees in sequence, and hooking seven fan blades 10 of the fan through the four pulling claws 7, namely, the seven fan blades 10 are fixed by the pulling claws 7 at intervals of 1 piece, 2 piece and 2 piece in sequence, so that the seven fan blades 10 can be disassembled only through the four pulling claws 7, the seven fan blades 10 can be disassembled at the same time by the least pulling claws 7, the arrangement number of the pulling claws 7 of the puller is reduced, and the cost of the puller is reduced; it is worth noting that people are strictly prohibited to look around the device when the device is operated, so that the pulling claw 7 of the puller is prevented from popping out suddenly to hurt people when the pulling force is large; secondly, screwing the hexagonal head of the threaded ejector rod 1 into the threaded ejector rod 1 by a hand, so that the ejector head of the threaded ejector rod 1 acts on a fixed shaft of a pulling piece (namely, the fixed shaft is positioned on a motor shaft of a fan), a pulling claw 7 is stressed preliminarily, and a ratchet wrench 8 with a sleeve 9 is replaced when the operation is not moved; it is worth noting that the auxiliary operating tool can also adopt a box wrench or a shifting wrench; thirdly, when the ratchet wrench 8 is used for operation, a proper operation direction is selected, the threaded mandril 1 is slowly rotated, so that the fan blade 10 is pulled out little by little, the pulling speed cannot be too high, otherwise the fan blade 10 is damaged; fourthly, the stress condition of the fan blade 10 is constantly noticed in the process of pulling out the fan blade 10 so as to avoid deviation, and if a problem exists, the transposition is timely adjusted; and fifthly, when the ejector is suddenly released from stress, the ejector is taken down, and then the fan blade 10 is taken out.
Further, the model of the nut 4 is M12. The type of the reinforcing nut 2 is M22, wherein the mounting rack disc 3 is formed by forging, the material is 50CrV specified by GB/T3077, and the heat treatment hardness is HRC 38-45; the material of the threaded ejector rod 1 is 45 specified in GB/T699, the heat treatment hardness HRC is 33-45, and the thread precision reaches 3 levels specified in GB/T197; the material of the pulling claw 7 is 50CrV specified in GB/T3077, and the heat treatment hardness is HRC 38-49; the support arm 6 and the fixing bolt 5 are made of 45 steel, and the heat treatment hardness is HRC 33-40.
In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention; and as will be appreciated by those skilled in the art, the benefits of the present invention are only better than those of the current embodiments of the prior art under certain circumstances, rather than being directed to the best use in the industry.
The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the invention is not limited to the precise forms disclosed herein, and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the invention as defined by the appended claims. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.
Claims (6)
1. The four-jaw puller is characterized by comprising a mounting rack, a thread ejector rod (1) and pulling jaws (7), wherein an internal thread hole is formed in the middle of the mounting rack in a penetrating mode, the thread ejector rod (1) is in threaded connection with the internal thread hole of the mounting rack, the side walls of the mounting rack are provided with four groups of pulling jaws (7) and four groups of pulling jaws (7) are arranged around the axis of the internal thread hole of the mounting rack in a circumferential mode.
2. The four-jaw puller according to claim 1, wherein the mounting frame comprises a mounting frame disc (3), the side wall of the mounting frame disc (3) is provided with four groups of support arms (6), the four groups of support arms (6) are all connected with the pulling claw (7), a reserved groove is formed in one end, away from the mounting frame disc (3), of each support arm (6), the top of each pulling claw (7) is matched with the reserved groove, a fixing bolt (5) is arranged on one side of each support arm (6) in a penetrating mode, and the tail of each fixing bolt (5) penetrates through the corresponding pulling claw (7) and extends to the outside of each support arm (6) and is connected with a nut (4) through threads.
3. A four-jaw extractor according to claim 2, characterized in that said mounting bracket disc (3) has a reinforcement nut (2) welded to its top, said reinforcement nut (2) having a threaded hole bearing with said mounting bracket, said threaded mandrel (1) being in threaded connection with said reinforcement nut (2).
4. A four-jaw extractor according to claim 3, characterized in that said reinforcing nut (2) has the type M22.
5. A four-jaw extractor according to claim 1, characterized in that the four groups of pulling jaws (7) are adjacently spaced by an angle of 51 °, 103 ° and 103 ° in sequence.
6. A four jaw extractor according to claim 2, characterized in that said nut (4) is of the type M12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220780393.2U CN218226414U (en) | 2022-03-31 | 2022-03-31 | One-item four-claw puller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220780393.2U CN218226414U (en) | 2022-03-31 | 2022-03-31 | One-item four-claw puller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218226414U true CN218226414U (en) | 2023-01-06 |
Family
ID=84662641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220780393.2U Expired - Fee Related CN218226414U (en) | 2022-03-31 | 2022-03-31 | One-item four-claw puller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218226414U (en) |
-
2022
- 2022-03-31 CN CN202220780393.2U patent/CN218226414U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20230106 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |