CN216504843U - Bushing pulling device - Google Patents
Bushing pulling device Download PDFInfo
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- CN216504843U CN216504843U CN202122708719.9U CN202122708719U CN216504843U CN 216504843 U CN216504843 U CN 216504843U CN 202122708719 U CN202122708719 U CN 202122708719U CN 216504843 U CN216504843 U CN 216504843U
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Abstract
The utility model relates to the technical field of bushing pulling devices, and provides a bushing pulling device which comprises a cylinder and a plurality of pushing columns, wherein a driving assembly is arranged in the cylinder, and the pushing columns are distributed in an annular array along the circumferential direction of the cylinder; one end of the pushing column horizontally extends into the cylinder body and is in sliding fit with the cylinder body, and the driving assembly is used for driving the pushing column to extend out of the cylinder body or be hidden in the cylinder body. The bushing pulling device can effectively replace the existing tools such as handwork or a screwdriver and the like to pull the bushing, so that the whole bushing pulling process is simpler and more effective, the pulling efficiency is improved, and the bushing can be effectively prevented from being damaged in the pulling process.
Description
Technical Field
The utility model relates to the technical field of bushing pulling devices, in particular to a bushing pulling device.
Background
The bushing is a part with more use amount of press-fitting technology in the mechanical industry, has a thin-wall rotary body workpiece with simple structure, good centering performance with a hub hole, high bearing capacity and reliable work under vibration, and is abraded when being used for a long time, so that the damaged bushing is required to be pulled out in the maintenance process so as to be replaced.
The current commonly used mode of demolising is that the maintenance workman stretches into downthehole the bush of catching on with the finger or stretches into downthehole prize the bush with instruments such as screwdriver, and such mode of demolising is very wasted time and energy, and can't stretch into downthehole when the aperture is less, still damages the bush easily.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a bush pulling device which can replace the existing tool such as hand or a screwdriver to pull out a bush so as to solve the problems in the prior art.
The embodiment of the utility model is realized by the following technical scheme:
a bushing pulling device comprises a cylinder and a plurality of pushing columns, wherein a driving assembly is arranged in the cylinder, and the pushing columns are distributed in an annular array along the circumferential direction of the cylinder;
one end of the pushing column horizontally extends to the inside of the barrel and is in sliding fit with the barrel, and the driving assembly is used for driving the pushing column to extend out of the barrel or be hidden in the barrel.
Optionally, an installation cavity is formed in the cylinder, the driving assembly includes a screw and a wedge block slidably disposed in the installation cavity, and an inclined surface fit is formed between one end of the pushing column extending into the cylinder and the wedge block; one end of the screw rod is rotatably connected with the wedge-shaped block, and the other end of the screw rod vertically extends to the outside of the barrel; the screw rod is in threaded connection with the cylinder body.
Furthermore, a reset groove is formed in the side wall of the barrel, a reset spring is arranged in the reset groove, and the reset spring is sleeved on the outer wall of the pushing column; one end of the reset spring is connected with the outer wall of the pushing column, and the other end of the reset spring is connected with the inner wall of the reset groove.
Further, a buffer spring is arranged between the wedge-shaped block and the bottom of the installation cavity; one end of the buffer spring is connected with the bottom of the wedge-shaped block, and the other end of the buffer spring is connected with the bottom of the installation cavity.
Furthermore, one end of the screw rod, which is far away from the wedge-shaped block, is provided with a rotating handle.
Optionally, the barrel body further comprises a pressing plate sleeved on the outer wall of the barrel body, the outer wall of the barrel body is provided with a plurality of sliding grooves along the vertical direction, the sliding grooves are distributed in an annular array along the circumferential direction of the barrel body, sliding blocks are arranged in the sliding grooves, and the pressing plate is connected with the barrel body through the sliding blocks;
each barrel on one side of the sliding groove is provided with a clamping groove matched with the sliding block, the clamping groove is communicated with the sliding groove, and the clamping grooves of the sliding grooves extend towards the rotating direction of the pressing plate.
Furthermore, each clamping groove that spout one side set up is a plurality of, and is a plurality of clamping groove sets gradually along vertical direction on the barrel.
Optionally, the outer diameter of the cylinder is matched with the inner diameter of the bushing.
The technical scheme of the embodiment of the utility model at least has the following advantages and beneficial effects:
the bushing pulling device is reasonable in design, can effectively replace the existing tools such as hands or screwdrivers to pull the bushing, so that the whole bushing pulling process is simpler and more effective, the pulling efficiency is improved, and the bushing can be effectively prevented from being damaged in the pulling process.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural view of a bushing extracting device according to an embodiment of the present invention;
FIG. 2 is an enlarged view taken at A in FIG. 1;
FIG. 3 is a schematic view of a partial structure of the barrel in the direction B in FIG. 1;
fig. 4 is a schematic structural view of a bushing extracting device according to an embodiment of the present invention.
Icon: 1-cylinder body, 101-installation cavity, 102-sliding groove, 103-clamping groove, 2-pushing column, 3-screw rod, 4-wedge block, 5-rotating handle, 6-return spring, 7-buffer spring, 8-pressing plate, 9-sliding block and 100-lining.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the product of this application is used, the description is merely for convenience and simplicity of description, and it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Examples
Referring to fig. 1 and 2, the present embodiment provides a bushing pulling device, including a cylinder 1 and a plurality of pushing posts 2, a driving assembly is disposed inside the cylinder 1, and the plurality of pushing posts 2 are distributed in an annular array along a circumferential direction of the cylinder 1; preferably, the outer diameter of the cylinder 1 of the present embodiment is adapted to the inner diameter of the bushing 100, so that an interference fit is formed between the outer wall of the cylinder 1 and the inner wall of the bushing 100, which is beneficial to pulling out the pressed bushing 100; meanwhile, the push pillars 2 of the present embodiment are provided in four to realize the force application to the bush 100 from four directions by the push pillars 2.
Wherein, 2 one end of top support strut extends to barrel 1 inside and with barrel 1 sliding fit along the horizontal direction for top support strut 2 can freely slide in barrel 1, and drive assembly is used for driving top support strut 2 to stretch out to the barrel 1 outside or hide in barrel 1.
Under initial condition, the ejection post 2 is hidden inside barrel 1 under drive assembly's effect, can insert the downthehole of pressure equipment with bush 100 with barrel 1 this moment, and make ejection post 2 be located the bottom of bush 100 in the barrel 1 upper reach position, reuse drive assembly drive a plurality of ejection posts 2 afterwards and stretch out outside barrel 1, the top surface of a plurality of ejection posts 2 contacts with the bottom surface of bush 100 this moment, upwards extract barrel 1 is whole again immediately, can realize extracting bush 100 from downthehole, easy operation is convenient.
Therefore, the bushing pulling device provided by the embodiment can effectively replace the existing tools such as handwork or screwdrivers to pull the bushing 100, so that the whole bushing 100 pulling process is simpler and more effective, the pulling efficiency is improved, and the bushing 100 can be effectively prevented from being damaged in the pulling process.
Specifically, with continuing reference to fig. 1 and fig. 2, a mounting cavity 101 is provided inside the cylinder 1 of the present embodiment, the driving assembly includes a screw 3 and a wedge block 4 slidably disposed in the mounting cavity 101, and the wedge block 4 can slide back and forth in the vertical direction; meanwhile, the wedge block 4 at least has a first inclined plane part corresponding to the pushing column 2 one by one.
One end of the pushing column 2 extending into the mounting cavity 101 is provided with a second inclined plane part, so that an inclined plane matching structure is formed between the pushing column 2 and the wedge block 4, and each pushing column 2 is pushed by the wedge block 4 at the same time; one end of the screw rod 3 is rotationally connected with the wedge-shaped block 4, and the other end of the screw rod 3 vertically extends to the outside of the barrel 1 and then is connected with a rotating handle 5 so as to rotate the screw rod 3; and the screw rod 3 is in threaded connection with the barrel 1, so that the screw rod 3 can move in the vertical direction when the screw rod 3 is rotated.
Meanwhile, the side wall of the barrel body 1 is provided with a reset groove, a reset spring 6 is arranged in the reset groove, and the reset spring 6 is sleeved on the outer wall of the pushing column 2; one end of the reset spring 6 is connected with the outer wall of the pushing column 2, and the other end of the reset spring 6 is connected with the inner wall of the reset groove.
According to the arrangement, when the screw rod 3 is rotated, the screw rod 3 moves downwards to push the wedge block 4 downwards, based on the inclined plane transmission principle, the wedge block 4 pushes the pushing and pushing column 2 to extend out of the barrel body 1, and the reset spring 6 extends to prestore an elastic force; on the contrary, when the screw rod 3 is rotated reversely, the screw rod 3 drives the wedge block 4 to move upwards, and the return spring 6 contracts at the moment so as to drive the pushing column 2 to retreat into the barrel 1 again.
Further, in order to make the wedge-shaped block 4 more stable in the movement process, with reference to fig. 1, a buffer spring 7 may be additionally disposed between the wedge-shaped block 4 and the bottom of the installation cavity 101, one end of the buffer spring 7 is connected to the bottom of the wedge-shaped block 4, and the other end of the buffer spring 7 is connected to the bottom of the installation cavity 101. The buffer spring 7 is compressed when the wedge block 4 moves downward, and the buffer spring 7 releases the elastic force to return to the original state when the wedge block 4 moves upward.
In this embodiment, with continued reference to fig. 1, this bush pulling apparatus further includes that the clamp plate 8 on barrel 1 outer wall is established to the cover, be the sliding fit structure between the clamp plate 8 inside wall of this embodiment and the barrel 1 outer wall, and barrel 1 outer wall is equipped with a plurality of spouts 102 along vertical direction, and a plurality of spouts 102 are distributed along the circumference of barrel 1 in an annular array, and is preferred, and the spout 102 of this embodiment is two, and just two spouts 102 set up relatively on barrel 1 outer wall. Meanwhile, a sliding block 9 is arranged in each sliding groove 102, and the pressing plate 8 is connected with the cylinder body 1 through the sliding block 9, so that the pressing plate 8 can reciprocate in the vertical direction along the sliding grooves 102.
Meanwhile, referring to fig. 3, the cylinder 1 on one side of each sliding groove 102 is provided with an engaging groove 103 adapted to the slider 9, the engaging groove 103 is communicated with the sliding groove 102, and the engaging grooves 103 of the sliding grooves 102 extend toward the rotating direction of the pressing plate 8. So set up, when clamp plate 8 moved to block groove 103 position department along vertical direction, only need rotate certain angle with clamp plate 8 level, can rotate slider 9 to the block groove 103 that corresponds, can realize restriction clamp plate 8 at the ascending motion of vertical direction this moment, with the top surface that utilizes clamp plate 8 to push down bush 100, make bush 100 lie in between clamp plate 8 and the ejection post 2 all the time around extracting, prevent bush 100 because the axis motion of inertia along barrel 1 when extracting, be favorable to extracting bush 100 from downthehole simultaneously.
In addition, the clamping grooves 103 arranged on one side of each sliding groove 102 are multiple, and the multiple clamping grooves 103 are sequentially arranged on the barrel 1 along the vertical direction, so that the fixed positions of the pressing plates 8 are multiple, the fixed positions of the pressing plates 8 are selected according to actual requirements, and the practicability of the bushing pulling device is improved.
In order to more clearly understand the bushing extracting device provided in this embodiment, the working principle of the bushing extracting device will be explained in detail below.
Referring to fig. 4, firstly, the pushing column 2 is hidden in the cylinder 1 in the initial state, the cylinder 1 is inserted into the hole pressed with the bush 100, at this time, the outer wall of the cylinder 1 is attached to the inner wall of the bush 100, and the extending position of the pushing column 2 on the cylinder 1 is located below the bottom surface of the bush 100; then, the screw rod 3 is rotated to drive the wedge block 4 to move downwards to eject the ejection column 2 out of the cylinder body 1, and the top surface of the ejected ejection column 2 is just contacted with the bottom surface of the bushing 100; secondly, the pressing plate 8 slides downwards, the bottom surface of the pressing plate is in contact with the top surface of the bushing 100, the pressing plate 8 rotates for a certain angle, so that the sliding block 9 is clamped into the clamping groove 103 to fix the pressing plate 8, and the bushing 100 is located between the pressing plate 8 and the pushing column 2; finally, the cylinder body 1 is pulled upwards, and the lining 100 can be pulled out from the hole.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A bushing pulling device is characterized by comprising a cylinder and a plurality of pushing columns, wherein a driving assembly is arranged in the cylinder, and the pushing columns are distributed in an annular array along the circumferential direction of the cylinder;
one end of the pushing column horizontally extends to the inside of the barrel and is in sliding fit with the barrel, and the driving assembly is used for driving the pushing column to extend out of the barrel or be hidden in the barrel.
2. The bushing pulling device according to claim 1, wherein a mounting cavity is formed in the cylinder, the driving assembly includes a screw and a wedge block slidably disposed in the mounting cavity, and an end of the pushing column extending into the cylinder is in inclined-plane fit with the wedge block; one end of the screw rod is rotatably connected with the wedge-shaped block, and the other end of the screw rod vertically extends to the outside of the barrel; the screw rod is in threaded connection with the cylinder body.
3. The bushing pulling device according to claim 2, wherein a reset groove is formed in a side wall of the cylinder, a reset spring is arranged in the reset groove, and the reset spring is sleeved on the outer wall of the pushing column; one end of the reset spring is connected with the outer wall of the pushing column, and the other end of the reset spring is connected with the inner wall of the reset groove.
4. The bushing extracting device according to claim 2, wherein a buffer spring is arranged between the wedge block and the bottom of the mounting cavity; one end of the buffer spring is connected with the bottom of the wedge-shaped block, and the other end of the buffer spring is connected with the bottom of the installation cavity.
5. The bushing extraction apparatus of claim 2, wherein a rotation knob is provided at an end of said threaded rod remote from said wedge.
6. The bushing pulling device according to claim 1, further comprising a pressing plate sleeved on the outer wall of the cylinder, wherein a plurality of sliding grooves are formed in the outer wall of the cylinder in the vertical direction and distributed in an annular array along the circumferential direction of the cylinder, sliding blocks are arranged in the sliding grooves, and the pressing plate is connected with the cylinder through the sliding blocks;
each barrel on one side of the sliding groove is provided with a clamping groove matched with the sliding block, the clamping groove is communicated with the sliding groove, and the clamping grooves of the sliding grooves extend towards the rotating direction of the pressing plate.
7. The bushing extracting apparatus according to claim 6, wherein a plurality of the engaging grooves are provided on one side of each of the sliding grooves, and the plurality of the engaging grooves are sequentially provided on the cylinder in a vertical direction.
8. The bushing extraction apparatus of claim 1, wherein the outer diameter of the barrel is adapted to the inner diameter of the bushing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122708719.9U CN216504843U (en) | 2021-11-05 | 2021-11-05 | Bushing pulling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122708719.9U CN216504843U (en) | 2021-11-05 | 2021-11-05 | Bushing pulling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216504843U true CN216504843U (en) | 2022-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122708719.9U Active CN216504843U (en) | 2021-11-05 | 2021-11-05 | Bushing pulling device |
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| CN (1) | CN216504843U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116728353A (en) * | 2023-08-15 | 2023-09-12 | 秦皇岛新远船舶机械设备有限公司 | Extractor and extraction method for cylinder cover valve seat of hydraulic four-stroke diesel engine for ship |
-
2021
- 2021-11-05 CN CN202122708719.9U patent/CN216504843U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116728353A (en) * | 2023-08-15 | 2023-09-12 | 秦皇岛新远船舶机械设备有限公司 | Extractor and extraction method for cylinder cover valve seat of hydraulic four-stroke diesel engine for ship |
| CN116728353B (en) * | 2023-08-15 | 2023-10-27 | 秦皇岛新远船舶机械设备有限公司 | Extractor and extraction method for cylinder cover valve seat of hydraulic four-stroke diesel engine for ship |
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