CN102152100A - Pull pin device - Google Patents
Pull pin device Download PDFInfo
- Publication number
- CN102152100A CN102152100A CN 201110109437 CN201110109437A CN102152100A CN 102152100 A CN102152100 A CN 102152100A CN 201110109437 CN201110109437 CN 201110109437 CN 201110109437 A CN201110109437 A CN 201110109437A CN 102152100 A CN102152100 A CN 102152100A
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- CN
- China
- Prior art keywords
- pin
- screw rod
- draws
- stretching screw
- abutting part
- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
- B23P19/027—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same using hydraulic or pneumatic means
Abstract
The invention provides a pull pin device, which comprises a pressing part (20) pressed against a pull pin working surface (60), and a stretching part (10) pressed against the pressing part (20) and connected to a pin shaft to be pulled (40), wherein the stretching part (10) comprises a stretching screw (13) connected to the head of the pin shaft to be pulled (40), and a stretching mechanism connected with the stretching screw (13). The pull pin device provided by the invention is good in safety and convenient to operate; and the working efficiency is effectively improved, and the labor intensity is reduced.
Description
Technical field
The present invention relates to the crane gear field, in particular to a kind of pin assembly that draws.
Background technology
In derrick crane, the phenomenon of using bearing pin to connect is very general, and particularly the bearing pin between standard knot connects.In practical engineering application, obtain between the standard knot to connect preferably in order to make, thereby the each several part function of realization crane usually needs to carry out bearing pin and installs, to connect standard knot.At present, traditional installation column crane mast section bearing pin method is puts into the standard knot coupling part earlier with bearing pin, use sledgehammer that bearing pin is squeezed into then, this method mostly is manually-operated, for the instrument and the dynamics of beating higher requirement is arranged, operate cumbersome, especially after the tower machine uses a period of time, because stressed big and surface corrosion, very inconvenient when standard knot connects the bearing pin installation, situation is especially obvious on the bigger bearing pin of diameter, and when pin diameter is big, quality for sledgehammer is also very big with the dynamics requirement of knocking, and has increased task difficulty especially.Especially in the work high above the ground process, need operating personnel that suitable operating space is arranged especially, yet the work high above the ground space is quite limited, this has improved operating personnel's working strength greatly, influenced staff's operant level, and very big potential safety hazard also being arranged for operating personnel itself, operating efficiency is quite low.In addition,, very easily cause certain damage, drawn the pin operation to increase difficulty especially beating the surface if bearing pin is through knocking repeatedly.When the tower machine was installed, the error that causes owing to processing, assembling etc. also made some standard knot bearing pin that comparatively difficulty is installed.
The existing pin assembly that draws also has the hydraulic system of employing to draw pin, but because this dynamical system of pin assembly of drawing mostly is electronic small pumping station, volume is generally bigger, need consider installation and layout on the tower machine during use.Pumping plant is difficult to move, and needs the long connecting line of configuration, on being fixed on the tower machine after, very inconvenient for the dismounting of target far away, cause many troubles for actual operation.And in the work high above the ground process, install or dismantle pumping plant itself and just have very big danger.The layout of pumping plant also needs to consider powerup issue, has brought inconvenience for especially this pin assembly that draws.The cost of this kind method is higher, and is for low end subscriber, also beyond affordability.
Summary of the invention
The present invention aims to provide a kind of pin assembly that draws, and security is good, and is easy to operate, has effectively improved operating efficiency, has reduced labour intensity.
To achieve these goals, according to an aspect of the present invention, provide a kind of pin assembly that draws, having comprised: abutting part compresses and draws the pin working face; Extension section is pressed on the abutting part, and is connected to bearing pin to be drawn, and extension section comprises and is connected to the stretching screw rod and the drawing mechanism that is connected with the stretching screw rod of waiting to draw the bearing pin head.
Further, drawing mechanism comprises: hollow jack, and the stretching screw rod is fixedly attached to hollow jack; Driver element drives hollow jack and pulls the stretching screw rod.
Further, driver element is hydraulic manual pump or manual pneumatic pump.
Further, abutting part comprises: the butt supporting leg compresses and draws the pin working face; Gripper shoe connects the butt supporting leg, and supports extension section, and gripper shoe is provided with the through hole that passes for the stretching screw rod.
Further, the gripper shoe correspondence waits to draw the distributing position of bearing pin to be provided with at least one through hole, in gripper shoe and draw and be provided with one or more butt supporting legs between the pin working face.
Further, abutting part is a box-shaped.
Further, draw pin assembly also to comprise cushion block, be arranged on abutting part and draw between the pin working face.
Further, on the stretching screw rod with wait to draw the bearing pin junction also to be provided with locking nut.
According to technical scheme of the present invention, draw pin assembly to comprise abutting part and extension section, extension section comprises and is connected to the stretching screw rod and the drawing mechanism that is connected with the stretching screw rod of waiting to draw the bearing pin head.Pull the stretching screw rod by drawing mechanism, bearing pin to be drawn is drawn in the pending connection position, finish the installation of bearing pin.Drawing mechanism comprises hollow jack and driver element, spurs the stretching screw rod by the hollow jack of drive unit drives.This structure is easy to use, and easy operating can be finished the bearing pin installation action in less space, and can not cause big damage to bearing pin, has effectively improved operating efficiency.At least one is arranged for the through hole that the stretching screw rod passes on the gripper shoe of abutting part, can realize installing simultaneously the function of a plurality of bearing pins.The stretching screw rod with wait to draw the bearing pin junction to be provided with locking nut, can strengthen the stretching screw rod and wait to draw connection between the bearing pin, guarantee connection stability, thereby guarantee to draw the reliability of pin work.
Description of drawings
The accompanying drawing that constitutes a part of the present invention is used to provide further understanding of the present invention, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, does not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 shows the mounting structure schematic diagram that draws pin assembly according to an embodiment of the invention; And
Fig. 2 shows the structural representation when drawing pin assembly to be in extended state according to an embodiment of the invention.
The specific embodiment
Hereinafter will describe the present invention with reference to the accompanying drawings and in conjunction with the embodiments in detail.Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.
As depicted in figs. 1 and 2, according to embodiments of the invention, draw pin assembly to comprise extension section 10 and abutting part 20.Abutting part 20 compress crane mast section main chord 50 inboards draw pin working face 60.Extension section 10 is connected on the abutting part 20, includes stretching screw rod 13 and drawing mechanism.Stretching screw rod 13 1 ends are connected the head of waiting to draw bearing pin 40, the other end is connected on the drawing mechanism, and under the stretching action of drawing mechanism, will wait to draw bearing pin 40 to draw in from inboard, main chord 50 lateral, finally make and wait to draw bearing pin 40 to enter pin shaft hole, the main chord 50 of standard knot is linked together.
Drawing mechanism comprises hollow jack 11 and driver element 12, and hollow jack 11 is fixed together with stretching screw rod 13, and provides driving force by driver element 12, makes hollow jack 11 drive 13 pullings of stretching screw rod and waits to draw bearing pin 40.Driver element 12 is hand-operating pressure pump here, and such as hydraulic manual pump or manual pneumatic pump, hand-operating pressure pump is simply small and exquisite, it is little to take up room, and weight is lighter, easy to use, simple to operate, can provide enough pin active forces that draws for hollow jack 11, well realize drawing the pin function.
Draw the abutting part 20 of pin assembly to comprise and compress one or more butt supporting leg 21 that draws pin working face 60, and the gripper shoe 22 that connects butt supporting leg 21.Gripper shoe 22 is provided with at least one through hole 23 that passes for stretching screw rod 13, and has the structure that supports drawing mechanism.Can also can be formed in one for mutual Combination Welding forms between gripper shoe 22 and the butt supporting leg 21.Abutting part 20 can be box structure, and particularly, abutting part 20 is frustum structure or cylindrical tube shape structure.Abutting part 20 can also be formed by connecting for a plurality of support bars and gripper shoe 22, and a plurality of support bars are evenly distributed on gripper shoe 22 and draw between the pin working face 60, constitute a plurality of butt supporting legs 21, form uniform and stable support to drawing pin assembly.In the present embodiment, abutting part 20 is a tube-in-tube structure, can provide stable support for drawing pin assembly.
When waiting to draw bearing pin 40 to be two or more bearing pins and direction when parallel, draw on the gripper shoe of abutting part 20 of pin assembly and can on correspondence respectively waits to draw the installation site of bearing pin 40, a plurality of corresponding through holes 23 be set, what make simultaneously that a plurality of stretching screw rods 13 pass that through hole 23 is connected a plurality of correspondences waits to draw on the bearing pin 40, the other end of stretching screw rod 13 is connected on the drawing mechanism, and a plurality of bearing pins 40 of waiting to draw so just can be installed simultaneously.For can be when installation be waited to draw bearing pin 40, abutting part 20 has enough support strengths, in gripper shoe 22 and draw and be provided with a plurality of butt supporting legs 21 between the pin working face 60,, prevent that gripper shoe 22 from causing damage in drawing the pin process so that gripper shoe 22 is had a plurality of supports.
At butt supporting leg 21 with draw and also be provided with cushion block 30 between the pin working face 60, abutting part 20 is connected on the cushion block 30, and by cushion block 30 is applied active force, will the power of compressing pass to and draw pin working face 60, draw pin assembly that reaction force is provided by 60 pairs of the working faces of pulling pin, thereby will bearing pin be drawn pack pin shaft hole into.Cushion block 30 can avoid abutting part 20 to directly act on drawing on the pin working face 60 of main chord 50 inboards; and in drawing the pin process, main chord 50 is caused damage; main chord 50 is formed effectively protection; simultaneously can guarantee that abutting part 20 works in smooth plane, make and draw pin assembly to have better action effect.In addition, cushion block 30 can also form the location to abutting part 20, is convenient to the installation of abutting part 20 more.
Preferably, with the stretching screw rod 13 at the link position place that waits to draw bearing pin 40 on also be provided with locking nut 14, with stretching screw rod 13 with wait to draw bearing pin 40 to be connected after, carry out pretension by 14 pairs of stretching screw rods of rotational lock nut 13, effectively strengthen stretching screw rod 13 and the effect that is connected of waiting to draw between the bearing pin 40.
Draw the operating procedure of pin assembly as follows:
1. at first cushion block 30 is close to the medial surface of main chord 50 and corresponding pin shaft hole and is put well, it is concentric with the pin shaft hole on the main chord 50 then sleeve to be placed on the through hole 23 that as far as possible guarantees simultaneously on the cushion block 30 on the sleeve;
2. then stretching screw rod 13 is passed the through hole 23 on the sleeve, pass the pin shaft hole on the main chord 50 again, to wait to draw bearing pin 40 and stretching screw rod 13 by being threaded in main chord 50 outsides, wait to draw bearing pin 40 can be the ladder bearing pin, when installation is waited to draw bearing pin 40, can draw bearing pin 40 to advance one section of pin shaft hole, be convenient to more install waiting;
3. hollow jack 11 is installed in sleeve head by stretching screw rod 13, an end of hollow jack 11 withstands on the sleeve, and other end nut screwing clamping is so far finished the installation of drawing pin assembly;
4. connect hydraulic manual pump and hollow jack 11 with high-pressure rubber pipe, shake the hydraulic manual pump, hollow jack 11 is stretched, drive stretching screw rod 13 and wait to draw the medial movement of bearing pin 40 to standard knot;
5. after finishing a stroke, unclamp the nut on hollow jack 11 tops, the pressure release of hydraulic manual pump, hollow jack 11 is recovered to the appropriate location, tightens the nut on hollow jack 11 tops again, makes nut hold out against hollow jack 11;
6. repeat 4,5 steps, be close to the outside of main chord 50 until the shaft shoulder of waiting to draw bearing pin 40.
As can be seen from the above description, the above embodiments of the present invention have realized following technique effect:
1. convenient and flexible operation: complete unit is in light weight, volume is little, can easily move, and is convenient to aerial operation;
2. with low cost: sleeve and screw rod are easy to processing, and jack and supporting pumping plant are common on the market instrument, are convenient to buy, and price is lower;
3. reduction working strength: after device installed, only need shake the hydraulic manual pump got final product complete operation;
4. raise the efficiency: generally speaking, with this new equipment install a bearing pin only need ten surplus minute, improved operating efficiency greatly;
5. applied widely: institute draws regardless of different kinds of the bearing pin, all can it can be installed by this device by revising the head threads hole size, and simultaneously, the pulling force of jack also can be controlled by hydraulic valve.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. one kind is drawn pin assembly, comprising:
Abutting part (20) compresses and draws pin working face (60);
Extension section (10) is pressed on the described abutting part (20), and is connected to bearing pin to be drawn (40),
It is characterized in that,
Described extension section (10) comprises stretching screw rod (13) that is connected to bearing pin described to be drawn (40) head and the drawing mechanism that is connected with described stretching screw rod (13).
2. the pin assembly that draws according to claim 1 is characterized in that described drawing mechanism comprises:
Hollow jack (11), described stretching screw rod (13) is fixedly attached to described hollow jack (11);
Driver element (12) drives described hollow jack (11) and pulls described stretching screw rod (13).
3. the pin assembly that draws according to claim 2 is characterized in that, described driver element (12) is hydraulic manual pump or manual pneumatic pump.
4. the pin assembly that draws according to claim 1 is characterized in that, described abutting part (20) comprising:
Butt supporting leg (21) compresses the described pin working face (60) that draws;
Gripper shoe (22) connects described butt supporting leg (21), and supports described extension section (10), and described gripper shoe (22) is provided with the through hole (23) that passes for described stretching screw rod (13).
5. the pin assembly that draws according to claim 4, it is characterized in that, the distributing position of the corresponding bearing pin described to be drawn of described gripper shoe (22) (40) is provided with at least one described through hole (23), is provided with one or more described butt supporting legs (21) between the pin working face (60) in described gripper shoe (22) and described drawing.
6. according to each described pin assembly that draws in the claim 1 to 5, it is characterized in that described abutting part (20) is a box-shaped.
7. according to each described pin assembly that draws in the claim 1 to 5, it is characterized in that, also comprise cushion block (30), be arranged on described abutting part (20) and described drawing between the pin working face (60).
8. according to each described pin assembly that draws in the claim 1 to 5, it is characterized in that, go up with bearing pin described to be drawn (40) junction at described stretching screw rod (13) and also be provided with locking nut (14).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110109437 CN102152100A (en) | 2011-04-28 | 2011-04-28 | Pull pin device |
| PCT/CN2011/078278 WO2012145975A1 (en) | 2011-04-28 | 2011-08-11 | Pulling pin device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110109437 CN102152100A (en) | 2011-04-28 | 2011-04-28 | Pull pin device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102152100A true CN102152100A (en) | 2011-08-17 |
Family
ID=44433947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110109437 Pending CN102152100A (en) | 2011-04-28 | 2011-04-28 | Pull pin device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102152100A (en) |
| WO (1) | WO2012145975A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102794629A (en) * | 2012-08-29 | 2012-11-28 | 天津博信汽车零部件有限公司 | Pin puller |
| CN105522368A (en) * | 2016-01-20 | 2016-04-27 | 山东塔高矿业机械装备制造有限公司 | Pin shaft dismounting device and using method thereof |
| CN107097066A (en) * | 2017-05-24 | 2017-08-29 | 徐工集团工程机械有限公司 | Location nut provision for disengagement |
| CN107263385A (en) * | 2017-06-30 | 2017-10-20 | 柳州欧维姆机械股份有限公司 | A kind of drawing type installs the device of interference fit bearing pin and its method for installing interference fit bearing pin |
| CN108994582A (en) * | 2018-08-13 | 2018-12-14 | 中车青岛四方机车车辆股份有限公司 | A kind of axle press-loading apparatus and pressing method |
| CN114737770A (en) * | 2022-04-15 | 2022-07-12 | 中建八局第三建设有限公司 | Method for quickly installing multi-lug-plate concentric large-diameter pin shaft |
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| CN107695661A (en) * | 2017-11-06 | 2018-02-16 | 昆山潼光塑胶电子有限公司 | A kind of bearing pin automatic assembling machine of tool box hinge |
| CN110270816B (en) * | 2019-07-23 | 2023-12-08 | 山东科技大学 | Device and method for disassembling pin shaft of reinstallation equipment |
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| CN105522368A (en) * | 2016-01-20 | 2016-04-27 | 山东塔高矿业机械装备制造有限公司 | Pin shaft dismounting device and using method thereof |
| CN107097066A (en) * | 2017-05-24 | 2017-08-29 | 徐工集团工程机械有限公司 | Location nut provision for disengagement |
| CN107263385A (en) * | 2017-06-30 | 2017-10-20 | 柳州欧维姆机械股份有限公司 | A kind of drawing type installs the device of interference fit bearing pin and its method for installing interference fit bearing pin |
| CN108994582A (en) * | 2018-08-13 | 2018-12-14 | 中车青岛四方机车车辆股份有限公司 | A kind of axle press-loading apparatus and pressing method |
| CN114737770A (en) * | 2022-04-15 | 2022-07-12 | 中建八局第三建设有限公司 | Method for quickly installing multi-lug-plate concentric large-diameter pin shaft |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012145975A1 (en) | 2012-11-01 |
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| C06 | Publication | ||
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| C53 | Correction of patent for invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 410013 No. 361 South silver basin, Hunan, Changsha Applicant after: Zoomlion Heavy Industry Science & Technology Development Co., Ltd. Address before: 410013 No. 361 South silver basin, Hunan, Changsha Applicant before: Chang Sha Zoomlion Heavy Industry Science & Technology Development Co., Ltd. |
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20110817 |