CN203031238U - Thruster - Google Patents
Thruster Download PDFInfo
- Publication number
- CN203031238U CN203031238U CN 201320034332 CN201320034332U CN203031238U CN 203031238 U CN203031238 U CN 203031238U CN 201320034332 CN201320034332 CN 201320034332 CN 201320034332 U CN201320034332 U CN 201320034332U CN 203031238 U CN203031238 U CN 203031238U
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- steel ball
- column
- hole
- pressure head
- shell
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Abstract
The utility model discloses a thruster. The thruster is characterized by comprising an ejector rod assembly, a foot stool body and pulling claws. The ejector rod assembly comprises an ejector rod, a stop screw, thrust ball bearings and a pressure head. The ejector rod comprises an adjustment part, a connection part and an installation part, wherein the adjustment part, the connection part and the installation part are coaxially arranged from top to bottom. The installation part is provided with an installation hole with a downward opening, and the axial line of the installation part is used as the axial line of the installation hole. The pressure head is in a cylindrical step shape and comprises, from top to bottom, an upper cylindrical section and a lower cylindrical section in sequence. The thrust ball bearings are fixedly arranged on the periphery of the installation part of the ejector rod by bearing rings and are coaxially and fixedly arranged on an upper side face of the lower cylindrical section of the pressure head by base rings. The upper cylindrical section of the pressure head is inserted into the installation hole in the installation part of the ejector rod after penetrating through the thrust ball bearings from bottom to top. The thruster is provided with the stop screw, so that the pressure head can be changed conveniently.
Description
Technical field
The utility model relates to the machine tool field, is specifically related to a kind of thruster.
Background technology
In the machinery overhaul process, often will be with parts such as the belt pulley on the thruster dismounting axle, gear, bearing, interference sleeves, thruster commonly used relies on 60 ° of conical surfaces of its screw rod (also claiming push rod) end to contact with the centre bore of the workpiece installation shaft that needs dismounting, makes pulling claw produce to move axially by rotating screw bolt during work and dismantles workpiece.Because screw rod when rotation screw rod is top to be the sliding friction that face contacts with centre bore, resistance is bigger, the operation effort, and cause the damage of centre bore of axle easily, secondly do not have the workpiece installation shaft in machining center hole for some, then commonly draw horse just can't dismantle the workpiece of installing on the axle effectively.
The utility model content
The purpose of this utility model is to overcome the problems referred to above, provides a kind of simple in structure, can protect the workpiece installation shaft effectively, and can adapt to the labour-saving thruster of the workpiece installation shaft of different structure.
The basic technical scheme of realizing the utility model purpose is: a kind of thruster, its design feature is: comprise push rod component, foot rest body and pulling claw.Push rod component comprises push rod, stop screw, thrust ball bearing and pressure head.
Above-mentioned push rod is the steel integral piece.Push rod comprises from top to bottom coaxial adjusting portion, connecting portion and the installation portion of arranging successively.Adjusting portion is positive hexagon, and connecting portion is screw rod, and the external radius of a circle in the cross section of adjusting portion is less than the radius in the cross section of connecting portion.Installation portion is the cylinder table scalariform, comprise the top shell of column and the bottom shell of column that set gradually from top to bottom, and the diameter of bottom shell of column is less than the diameter of top shell of column.It is the axis installing hole that Open Side Down that installation portion is provided with its axis.The top shell of column of installation portion radially is provided with screw along it, and screw communicates with installing hole, is presented axially in the middle part of installing hole.
Above-mentioned pressure head is the cylinder table scalariform, comprises the last shell of column and the following shell of column that set gradually from top to bottom.The diameter of last shell of column is less than the diameter that descends shell of column, and the diameter of last shell of column is corresponding with the aperture of the installing hole of the installation portion of push rod.It is the axis counterbore that Open Side Down that pressure head is provided with its axis, and the bigger hole section of the diameter that is positioned at the bottom of counterbore is provided with internal thread.The last shell of column top of pressure head is circumferentially with buckling groove along it.
Above-mentioned thrust ball bearing is fixedly installed on by its blowout patche on the bottom shell of column periphery of installation portion of push rod, on the upper side by the coaxial following shell of column that is fixedly installed on pressure head of its seat ring.The last shell of column of pressure head passes in the installing hole of the installation portion that inserts push rod behind the thrust ball bearing from bottom to top.Stop screw screws in the screw of the installation portion of push rod, and the head of stop screw stretches in the installing hole of installation portion, and its corresponding site is arranged in the cell wall sliding-contact of buckling groove with the buckling groove of pressure head.
Above-mentioned foot rest body is the steel integral piece.The middle part of foot rest body is provided with runs through its screw that matches with the connecting portion of push rod up and down.The foot rest body radially is provided with an installing rack in the screw bilateral symmetry along screw, and 2 installing racks are equipped with and run through its mounting groove up and down, and each installing rack from inside to outside is provided with the installing hole that 2 to 4 along continuous straight runs run through its front and back successively, and installing hole is connected with mounting groove.Push rod screws from bottom to top in the screw of foot rest body, links to each other with the foot rest body.
Above-mentioned pulling claw has 2.The planform of each pulling claw is all identical, and each pulling claw is the steel integral piece.The top of pulling claw is provided with installing hole.The bottom of pulling claw is bent to form drag hook to the inside.The corresponding bearing pin in corresponding symmetrically arranged 2 installing holes is rotatably connected on the installing rack of foot rest body each pulling claw on its installing hole and the foot rest body by being arranged on, and is equipped with shaft block ring on each bearing pin.
Technical scheme based on above-mentioned basic technical scheme is: push rod component also comprises steel ball, steel ball seat, compression spring and end cap.Steel ball seat integral body is the cylinder table scalariform, and the aperture of the hole section that the top shell of column diameter of steel ball seat and the diameter of the counterbore of pressure head are less is corresponding, and the bottom shell of column of steel ball seat is provided with the external screw thread that matches with the internal thread of the bigger hole section of the diameter of the counterbore of pressure head.Steel ball seat is axially arranged with along it and runs through its stepped hole up and down.The superposed aperture of hole section of going up of stepped hole is greater than the aperture of the following hole section that is positioned at the bottom.The last hole Duan Chu of stepped hole is provided with internal thread.The bottom of the following hole section of stepped hole is circumferentially with to projecting inward interior protuberance along it, and the cross section of interior protuberance is the right-angled trapezium of holding up, and its right angle waist is positioned at the below.The downside of steel ball seat is provided with the installing hole that Open Side Down.Installing hole has 2, and with the axial symmetry setting of steel ball seat.The sphere diameter of steel ball is corresponding with the aperture of the following hole section of the stepped hole of steel ball seat, and steel ball is arranged in the stepped hole of steel ball seat, and expose outside the steel ball seat downwards its underpart.The compression spring is arranged in the stepped hole of steel ball seat, is positioned on the steel ball upside.Housing screw screws on the stepped hole of steel ball seat and in the section of hole, compresses spring and be in compressive state.Steel ball seat screws from bottom to top in the bigger hole section of the diameter of the counterbore of pressure head, and its downside is equal with the downside of pressure head.
The utlity model has positive effect: simple in structure, the low cost of manufacture, easy to operate of (1) thruster of the present utility model can be widely used in the flight-line maintenance field that needs to load and unload parts on shaft such as gear, belt pulley, bearing.
(2) to change the force part into shaft end by centre bore stressed for thruster of the present utility model, transmits axial force by thrust ball bearing, so rapid operation; Secondly because the force part changes the end of axle into, thus can protect the centre bore of axle effectively, and can dismantle do not have centre bore spool or centre bore damaged spool on workpiece, applied range.
(3) thruster of the present utility model upwards is provided with one group of installing hole in the footpath of the installing rack of foot rest body, can satisfy the needs of different size workpiece by the installation site of transposing pulling claw.
(4) steel ball of thruster of the present utility model can be used for having the pre-determined bit of the axle of centre bore, can make the push rod component axis with concentric with axle, after the pressure head of push rod component was stressed, steel ball can overcome the elastic force retraction of compression spring automatically, and it is stressed that pressure head is contacted with axial end.
(5) thruster of the present utility model is provided with stop screw, is convenient to the replacing of pressure head.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is schematic perspective view of the present utility model;
Fig. 3 is the A portion enlarged diagram among Fig. 1;
Fig. 4 is the B portion enlarged diagram among Fig. 3.
Mark in the above-mentioned accompanying drawing is as follows:
Push rod component 1, push rod 11, adjusting portion 11-1, connecting portion 11-2, installation portion 11-3, installing hole 11-3-1, screw 11-3-2, stop screw 12, thrust ball bearing 13, pressure head 14, steel ball 15, steel ball seat 16, compression spring 17, housing screw 18, foot rest body 2, installing rack 21, mounting groove 21-1, installing hole 21-2, pulling claw 3, drag hook 31, bearing pin 4, shaft block ring 5.
The specific embodiment
The description in orientation of the present utility model is carried out according to orientation shown in Figure 1, also is the direction up and down that direction up and down shown in Figure 1 is description, and a side of court of Fig. 1 institute is the place ahead, and a side who deviates from Fig. 1 is the rear.Side with close push rod is the inboard, is the outside with the side away from push rod.
(embodiment 1)
See Fig. 1 and Fig. 2, thruster of the present utility model comprises push rod component 1, foot rest body 2 and pulling claw 3.
See Fig. 1 to Fig. 3, push rod component 1 comprises push rod 11, stop screw 12, thrust ball bearing 13, pressure head 14, steel ball 15, steel ball seat 16, compression spring 17 and end cap 18.
See Fig. 1 to Fig. 3, push rod 11 is the steel integral piece.Push rod 11 comprises from top to bottom coaxial adjusting portion 11-1, connecting portion 11-2 and the installation portion 11-3 of arranging successively.Adjusting portion 11-1 is positive hexagon, and connecting portion 11-2 is screw rod, and the external radius of a circle in the cross section of adjusting portion 11-1 is less than the radius in the cross section of connecting portion; Installation portion 11-3 is the cylinder table scalariform, comprise the top shell of column and the bottom shell of column that set gradually from top to bottom, and the diameter of bottom shell of column is less than the diameter of top shell of column.It is the axis installing hole 11-3-1 that Open Side Down that installation portion 11-3 is provided with its axis.The top shell of column of installation portion 11-3 radially is provided with screw 11-3-2 along it, and screw 11-3-2 communicates with installing hole 11-3-1, is presented axially in the middle part of installing hole 11-3-1.
See Fig. 1 to Fig. 3, pressure head 14 is the cylinder table scalariform, comprises the last shell of column and the following shell of column that set gradually from top to bottom.The diameter of last shell of column is less than the diameter that descends shell of column, and the diameter of last shell of column is corresponding with the aperture of the installing hole 11-3-1 of the installation portion 11-3 of push rod 11.It is the axis counterbore that Open Side Down that pressure head 14 is provided with its axis, and the bigger hole section of the diameter that is positioned at the bottom of counterbore is provided with internal thread.The last shell of column top of pressure head 14 is circumferentially with buckling groove 14-1 along it.
See Fig. 1 to Fig. 3, thrust ball bearing 13 is fixedly installed on by its blowout patche 13-1 on the bottom shell of column periphery of installation portion 11-3 of push rod 11, on the upper side by the coaxial following shell of column that is fixedly installed on pressure head 14 of its seat ring 13-2.The last shell of column of pressure head 14 passes thrust ball bearing 13 back from bottom to top and inserts among the installing hole 11-3-1 of installation portion 11-3 of push rods 11; Among the screw 11-3-2 of the installation portion 11-3 that stop screw 12 screws at push rod 11, the head of stop screw 12 stretches among the installing hole 11-3-1 of installation portion 11-3, and its corresponding site is arranged in the cell wall sliding-contact of buckling groove 14-1 with the buckling groove 14-1 of pressure head 14, carries out spacing in the axial direction to pressure head 14.
See Fig. 1 to Fig. 3, steel ball seat 16 integral body are the cylinder table scalariform, the aperture of the hole section that the top shell of column diameter of steel ball seat 16 and the diameter of the counterbore of pressure head 14 are less is corresponding, and the bottom shell of column of steel ball seat 16 is provided with the external screw thread that matches with the internal thread of the bigger hole section of the diameter of the counterbore of pressure head 14.Steel ball seat 16 is axially arranged with along it and runs through its stepped hole up and down.The superposed aperture of hole section of going up of stepped hole is greater than the aperture of the following hole section that is positioned at the bottom.The last hole Duan Chu of stepped hole is provided with internal thread.The bottom of the following hole section of stepped hole is circumferentially with to projecting inward interior protuberance 16-1 along it, and the cross section of interior protuberance 16-1 is the right-angled trapezium of holding up, and its right angle waist is positioned at the below.The downside of steel ball seat 16 is provided with the installing hole 16-2 that Open Side Down.Installing hole 16-2 has 2, and with the axial symmetry setting of steel ball seat 16.The sphere diameter of steel ball 15 is corresponding with the aperture of the following hole section of the stepped hole of steel ball seat 16, and steel ball 15 is arranged in the stepped hole of steel ball seat 16, and expose downwards outside the steel ball seat 16 its underpart; Compression spring 17 is arranged in the stepped hole of steel ball seat 16, is positioned on steel ball 15 upsides; Housing screw 18 screws on the stepped hole of steel ball seat 16 in the section of hole, and from the top compression spring 17 is carried out spacingly, makes compression spring 17 be in compressive state.Steel ball seat 16 screws from bottom to top in the bigger hole section of the diameter of the counterbore of pressure head 14, and its downside is equal with the downside of pressure head 14.
See Fig. 1 and Fig. 2, foot rest body 2 is the steel integral piece.The middle part of foot rest body 2 is provided with runs through its screw that matches with the connecting portion 11-2 of push rod 11 up and down.Foot rest body 2 radially is provided with 2 installing racks 21 in the screw bilateral symmetry along screw, 2 installing racks 21 are equipped with and run through its mounting groove 21-1 up and down, it is 2 that each installing rack 21 from inside to outside is provided with the installing hole 21-2(present embodiment that 2 to 4 along continuous straight runs run through before and after it successively), installing hole 21-2 is connected with mounting groove 21-1.Push rod 11 screws from bottom to top in the screw of foot rest body 2, links to each other with foot rest body 2.
See Fig. 1 and Fig. 2, pulling claw 3 has 2.The planform of each pulling claw 3 is all identical, and each pulling claw 3 is the steel integral piece.The top of pulling claw 3 is provided with installing hole.The bottom of pulling claw 3 is bent to form drag hook 31 to the inside.The corresponding bearing pin 4 in corresponding symmetrically arranged 2 installing holes is rotatably connected on the installing rack 21 of foot rest body 2 each pulling claw 3 on its installing hole and the foot rest body 2 by being arranged on, and is equipped with shaft block ring 5 on each bearing pin 4.
Above embodiment is only for the usefulness that the utility model is described; but not to restriction of the present utility model; person skilled in the relevant technique is under the situation that does not break away from spirit and scope of the present utility model; can also make various conversion and variation; can also transform accordingly according to the inspiration of above-described embodiment in the concrete application process, so all technical schemes that are equal to all should be included within the scope of patent protection of the present utility model.
Claims (2)
1. a thruster is characterized in that: comprise push rod component (1), foot rest body (2) and pulling claw (3); Push rod component (1) comprises push rod (11), stop screw (12), thrust ball bearing (13) and pressure head (14);
Push rod (11) is the steel integral piece; Push rod (11) comprises from top to bottom coaxial adjusting portion (11-1), connecting portion (11-2) and the installation portion (11-3) of arranging successively; Adjusting portion (11-1) is positive hexagon, and connecting portion (11-2) is screw rod, and the external radius of a circle in the cross section of adjusting portion (11-1) is less than the radius in the cross section of connecting portion; Installation portion (11-3) is the cylinder table scalariform, comprise the top shell of column and the bottom shell of column that set gradually from top to bottom, and the diameter of bottom shell of column is less than the diameter of top shell of column; It is the axis installing hole that Open Side Down (11-3-1) that installation portion (11-3) is provided with its axis; The top shell of column of installation portion (11-3) radially is provided with screw (11-3-2) along it, and screw (11-3-2) communicates with installing hole (11-3-1), is presented axially in the middle part of installing hole (11-3-1);
Pressure head (14) is the cylinder table scalariform, comprises the last shell of column and the following shell of column that set gradually from top to bottom; The diameter of last shell of column is less than the diameter that descends shell of column, and the diameter of last shell of column is corresponding with the aperture of the installing hole (11-3-1) of the installation portion (11-3) of push rod (11); It is the axis counterbore that Open Side Down that pressure head (14) is provided with its axis, and the bigger hole section of the diameter that is positioned at the bottom of counterbore is provided with internal thread; The last shell of column top of pressure head (14) is circumferentially with buckling groove (14-1) along it;
Thrust ball bearing (13) is fixedly installed on by its blowout patche (13-1) on the bottom shell of column periphery of installation portion (11-3) of push rod (11), on the upper side by the coaxial following shell of column that is fixedly installed on pressure head (14) of its seat ring (13-2); The last shell of column of pressure head (14) passes thrust ball bearing (13) back from bottom to top and inserts in the installing hole (11-3-1) of installation portion (11-3) of push rod (11); Stop screw (12) screws in the screw (11-3-2) of the installation portion (11-3) of push rod (11), the head of stop screw (12) stretches in the installing hole (11-3-1) of installation portion (11-3), and its corresponding site is arranged in the cell wall sliding-contact of buckling groove (14-1) with the buckling groove (14-1) of pressure head (14);
Foot rest body (2) is the steel integral piece; The middle part of foot rest body (2) is provided with runs through its screw that matches with the connecting portion (11-2) of push rod (11) up and down; Foot rest body (2) radially is provided with 2 installing racks (21) in the screw bilateral symmetry along screw, 2 installing racks (21) are equipped with and run through its mounting groove (21-1) up and down, each installing rack (21) from inside to outside is provided with the installing hole (21-2) that 2 to 4 along continuous straight runs run through its front and back successively, and installing hole (21-2) is connected with mounting groove (21-1); Push rod (11) screws from bottom to top in the screw of foot rest body (2), links to each other with foot rest body (2);
Pulling claw (3) has 2; The planform of each pulling claw (3) is all identical, and each pulling claw (3) is the steel integral piece; The top of pulling claw (3) is provided with installing hole; The bottom of pulling claw (3) is bent to form drag hook (31) to the inside; Each pulling claw (3) is rotatably connected on the installing rack (21) of foot rest body (2) by the corresponding bearing pin (4) that is arranged in last corresponding symmetrically arranged 2 installing holes of its installing hole and foot rest body (2), and is equipped with shaft block ring (5) on each bearing pin (4).
2. thruster according to claim 1 is characterized in that: push rod component (1) also comprises steel ball (15), steel ball seat (16), compression spring (17) and end cap (18); Steel ball seat (16) integral body is the cylinder table scalariform, the aperture of the hole section that the top shell of column diameter of steel ball seat (16) and the diameter of the counterbore of pressure head (14) are less is corresponding, and the bottom shell of column of steel ball seat (16) is provided with the external screw thread that matches with the internal thread of the bigger hole section of the diameter of the counterbore of pressure head (14); Steel ball seat (16) is axially arranged with along it and runs through its stepped hole up and down; The superposed aperture of hole section of going up of stepped hole is greater than the aperture of the following hole section that is positioned at the bottom; The last hole Duan Chu of stepped hole is provided with internal thread; The bottom of the following hole section of stepped hole is circumferentially with to projecting inward interior protuberance (16-1) along it, and the cross section of interior protuberance (16-1) is the right-angled trapezium of holding up, and its right angle waist is positioned at the below; The downside of steel ball seat (16) is provided with the installing hole that Open Side Down (16-2); Installing hole (16-2) has 2, and with the axial symmetry setting of steel ball seat (16); The sphere diameter of steel ball (15) is corresponding with the aperture of the following hole section of the stepped hole of steel ball seat (16), and steel ball (15) is arranged in the stepped hole of steel ball seat (16), and expose downwards outside the steel ball seat (16) its underpart; Compression spring (17) is arranged in the stepped hole of steel ball seat (16), is positioned on steel ball (15) upside; Housing screw (18) screws in the section of the last hole of the stepped hole of steel ball seat (16), and compression spring (17) is in compressive state; Steel ball seat (16) screws from bottom to top in the bigger hole section of the diameter of the counterbore of pressure head (14), and its downside is equal with the downside of pressure head (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320034332 CN203031238U (en) | 2013-01-23 | 2013-01-23 | Thruster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320034332 CN203031238U (en) | 2013-01-23 | 2013-01-23 | Thruster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203031238U true CN203031238U (en) | 2013-07-03 |
Family
ID=48683381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320034332 Expired - Fee Related CN203031238U (en) | 2013-01-23 | 2013-01-23 | Thruster |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203031238U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105252486A (en) * | 2015-11-24 | 2016-01-20 | 安徽江淮汽车股份有限公司 | Puller disassembly tool |
| CN106737398A (en) * | 2016-12-13 | 2017-05-31 | 广西职业技术学院 | Three-jaw bearing chest-developer |
| CN112171250A (en) * | 2020-09-26 | 2021-01-05 | 嘉兴学院 | Special drawing tool for bearing on shaft |
| CN113751991A (en) * | 2020-06-01 | 2021-12-07 | 三菱电机大楼技术服务株式会社 | Pull-out auxiliary tool |
-
2013
- 2013-01-23 CN CN 201320034332 patent/CN203031238U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105252486A (en) * | 2015-11-24 | 2016-01-20 | 安徽江淮汽车股份有限公司 | Puller disassembly tool |
| CN106737398A (en) * | 2016-12-13 | 2017-05-31 | 广西职业技术学院 | Three-jaw bearing chest-developer |
| CN113751991A (en) * | 2020-06-01 | 2021-12-07 | 三菱电机大楼技术服务株式会社 | Pull-out auxiliary tool |
| CN113751991B (en) * | 2020-06-01 | 2023-08-25 | 三菱电机楼宇解决方案株式会社 | Pulling auxiliary tool |
| CN112171250A (en) * | 2020-09-26 | 2021-01-05 | 嘉兴学院 | Special drawing tool for bearing on shaft |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130703 Termination date: 20150123 |
|
| EXPY | Termination of patent right or utility model |