CN207746962U - A kind of chain drive spanner - Google Patents
A kind of chain drive spanner Download PDFInfo
- Publication number
- CN207746962U CN207746962U CN201721620252.XU CN201721620252U CN207746962U CN 207746962 U CN207746962 U CN 207746962U CN 201721620252 U CN201721620252 U CN 201721620252U CN 207746962 U CN207746962 U CN 207746962U
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- sprocket
- driven
- shell
- driving shaft
- chain
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- 230000007704 transition Effects 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
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Abstract
The utility model discloses a kind of chain drive spanners, including：Shell, driving shaft, drive sprocket, driven shaft, driven sprocket and chain.It is correspondingly provided with first through hole in the opposite two side walls in one end of shell, the second through-hole is correspondingly provided in the opposite two side walls of the other end of shell；Drive sprocket, which is arranged, to be fixed on driving shaft, and driving shaft is set to by bearing rotation in first through hole；Driving shaft is stretched out from the side of shell, and external part is equipped with the regular hexagon boss for connecting ratchet spanner；Driven sprocket, which is arranged, to be fixed on driven shaft, and driven shaft is set to by bearing rotation in the second through-hole；Driven shaft is stretched out from the other side of shell, and external part is equipped with the square protrusions for connecting wrench socket；Drive sprocket engages connection with driven sprocket by chain.The utility model structure simplifies, using reliable, especially suitable for the fastening or dismounting of small space inner bolt, coordinates ratchet spanner and wrench socket to use, overhaul efficiency is high, applied widely.
Description
Technical field
The utility model is related to mechanical equipment processing technique fields, and in particular to a kind of chain drive spanner.
Background technology
Hydrogenerator is made of stator, rotor, rotor high speed rotation in stator, to ensure that stator bar is fully cut
Rotor rotary magnetic field wire, the gap between rotor and stator are normally only set as 30mm.Generator amature is made of multigroup magnetic pole, is anti-
Rotation stop runs at high speed and collides between middle magnetic pole, magnetic pole block is equipped between magnetic pole, magnetic pole block passes through stock closely-pitched spiral shell
Bolt is fixed on rotor.It in unit maintenance, needs after first dismantling magnetic pole block, rotor magnetic pole could be dismantled and carry out careful inspection
It looks into.Since magnetic pole block is mounted on position among magnetic pole, apart from upper and lower ends in 1000mm or so, common wrench can not arrive at
At the connection bolt of magnetic pole block, and rotor only has 30mm with stator gap, other tools cannot be introduced into, can only be by common wrench
Welding lengthens.In practical applications, it is lengthened since spanner welds, spanner total length is more than 1000mm, during demounting bolt
Spanner is easy to happen shaking, and spanner bayonet is easily disengaged with nut, constantly shakes in dismounting and be easy to cause killing for fine thread,
Eventually leading to bolt can not disassemble.
Utility model content
In order to solve the above technical problems, the technical scheme adopted by the utility model is that：Including：Shell, driving shaft, drive chain
Wheel, driven shaft, driven sprocket and chain；The shell is in flat, is left and right two parts, left and right two along chain drive face subdivision
Part accommodates the cavity of drive sprocket, driven sprocket and chain to being encircled into；It is corresponding in the opposite two side walls in one end of shell
Equipped with first through hole, the second through-hole is correspondingly provided in the opposite two side walls of the other end of shell；The drive sprocket is arranged solid
It is scheduled on driving shaft, driving shaft is set to by bearing rotation in first through hole；One end of driving shaft is stretched out from a side body, is stretched out
End is equipped with regular hexagon boss；The driven sprocket, which is arranged, to be fixed on driven shaft, and driven shaft is set to second by bearing rotation
In through-hole；One end of driven shaft is stretched out from another side body, and external part is equipped with square protrusions；Drive sprocket is logical with driven sprocket
Cross chain engagement connection.
Chain wrench according to bolt specification to be removed in use, select suitable wrench socket, by the one of wrench socket
End cap is connected in the square boss of driven shaft, and the other end of wrench socket is socketed on bolt to be removed.Driving shaft just
Ratchet spanner is installed, rotating ratchet wrench drives drive sprocket rotation, torque to be transmitted to sleeve by chain on hexagon boss
On to turn bolt to be removed.
Further, the inner ring of the bearing is lined with the bushing that endoporus is square, and the both ends of driving shaft and driven shaft are equal
Equipped with square protrusions compatible with the bushing endoporus, driving shaft and driven shaft are connected by square protrusions and bearing
It connects.The design of square inner bore and boss cooperation, structure are simplified, using reliable.
Further, the bushing and driving shaft and driven shaft are clearance fit.Clearance fit facilitates the dismounting of axis.
Further, the drive sprocket is equal with the reference diameter of driven sprocket and the number of teeth.It is such design be for
Keep both sides torque equal in torque transmittance process.When demounting bolt moment requires, applies in drive sprocket side and advise
Fixed torque, by movable sprocket side, that is, exportable defined torque.
Further, the driving shaft coordinates with drive sprocket for transition, and driving shaft passes through key connection with drive sprocket；Institute
It states driven shaft with driven sprocket to coordinate for transition, driven shaft passes through key connection with driven sprocket.Transition cooperation facilitates tearing open for sprocket wheel
Dress, key connection is secured, will not relatively rotate and displacement.
Further, left and right two parts of the shell are connected together by groove and boss.Be connected together easy disassembly,
Design simplicity, using reliable.
Further, the outer ring of the bearing and the hole wall of the first through hole of shell and the second through-hole weld.Using in this way
Design make features simple structure, using reliable.
In order to keep chain drive relatively reliable, can also increase chain tensioning mechanism in shell, for example, drive sprocket with
Increase tensioning wheel between driven sprocket, tensioning wheel is located at the outside of the connecting line of drive sprocket and driven sprocket, drive sprocket with
The spacing A of the connecting line of driven sprocket to tensioning wheel is adjustable.Chain is engaged with drive sprocket, driven sprocket and tensioning wheel simultaneously.
The installation site of tensioning wheel is adjusted, spacing A increases can tension chain.
The beneficial effects of the utility model：
1, the Chain wrench of this programme because shape it is flat long and narrow, be suitable for small space inner bolt fastening or dismounting.
2, chain drive, transmission efficiency are used in this programme.
3, this programme can coordinate ratchet spanner to use, and improve overhaul efficiency.
It 4,, can be with according to the different size of bolt to be removed since the rectangular interface of the wrench socket of certain specification is identical
The suitable wrench socket of unrestricted choice, cooperation wrench socket use the scope of application for expanding the utility model.
Description of the drawings
Fig. 1 is a kind of positive structure diagram (removal right shell) of embodiment of the utility model.
Fig. 2 is the vertical view (removal chain) of Fig. 1.
Fig. 3 (a) is the structural schematic diagram of driving shaft in Fig. 1；(b) be (a) A-A sectional views；(c) it is that the B-B of (a) is cutd open
Face figure；(d) be (a) C-C sectional views.
Fig. 4 (a) is the structural schematic diagram of driven shaft in Fig. 1；(b) be (a) D-D sectional views；(c) it is that the E-E of (a) 7 is cutd open
Face figure.
Specific implementation mode
It is new to this practicality below in conjunction with attached drawing to keep the purpose of this utility model, technical solution and advantage clearer
The technical solution of type is clearly and completely described.
The meaning of " inside and outside " described in the utility model is referred to relative to equipment itself, inside sensing equipment
Direction is interior, otherwise is outer.
The meaning of " radial direction " described in the utility model refers to the radial direction of object, and " axial direction " refers to and radial vertical phase
The direction of friendship.
Refering to fig. 1 and Fig. 2, a kind of chain drive spanner, including：Shell 1, driving shaft 2, drive sprocket 3, driven shaft 4, from
Movable sprocket 5 and chain 6.
Shell 1 is in flattened rectangular, is left and right two parts 11,12, the split surface of left shell 11 along chain drive face subdivision
It is equipped with annular convex platform 1111, annular convex platform 1111 is protruded outward by split surface to be formed.The split surface of right shell 12 is equipped with
Annular groove 1211, annular groove 1211 are formed by inward-facing collapse of subdivision, and annular groove 1211 blocks with annular protrusion 1111
Close connection.Left shell 11 is contained in right shell 12 to being encircled into cavity 13, drive sprocket 3, driven sprocket 5 and chain 6
In cavity 13.Be correspondingly provided with first through hole 111 in the opposite two side walls in one end of shell 1, the other end of shell 1 it is opposite two
The second through-hole 112 is correspondingly provided on a side wall.The outer ring spot welding of bearing 113 is connected to first through hole 111 and the second through-hole 112
Interior, the inner ring of bearing 113 is lined with the bushing (not shown) of square endoporus.In the present embodiment, the width of bearing 113 is big
In the width of shell 1, the side that bearing 113 is located in shell 1 is concordant with the medial surface of shell 1, the another side of bearing 113
Shell 1 is stretched out, design in this way can be such that the thickness of Chain wrench reduces simultaneously and ensure the inner cavity with one fixed width for accommodating
Sprocket wheel.
Refering to Fig. 3 (a), (b), (c), (d), driving shaft 2 is cylindric in variable cross-section, the peripheral surface at cylinder both ends it is radial to
Contract forms square protrusions 21, and the shaft shoulder 211 is formed between cylinder and square protrusions.The wherein square protrusions of side
The peripheral surface of 21 end, which is radially-inwardly shunk, forms regular hexagon boss 22, and regular hexagon boss 22 is for being socketed ratchet wrench
Hand.The design of the shaft shoulder prevents the vibration of axis, ensures that Chain wrench performance is reliable.
Refering to Fig. 4 (a), (b), (c), driven shaft 4 is cylindric in variable cross-section, and the peripheral surface at cylinder both ends is radially-inwardly received
Contracting forms square protrusions 41, and the shaft shoulder 411 is formed between cylinder and square protrusions 41.The wherein square protrusions 41 of side
It is slightly long, it is used for muff-coupling wrench sleeve.The design of the shaft shoulder prevents the vibration of axis, ensures that Chain wrench performance is reliable.
Referring to Fig.2, drive sprocket 3 is sleeved on by key (not shown) on the cylindrical surface of driving shaft 2, driving shaft 2
The inner ring that the square protrusions 21 at both ends are inserted into the bearing 113 of first through hole 112 is connect with 113 clearance fit of bearing, bearing
113 side is stuck on the shaft shoulder 211.Driving shaft 2 stretches out the regular hexagon boss 22 of one end of right shell 12 for covering
Connect ratchet spanner.In the present embodiment, the both ends of driving shaft are stretched out from shell, also can only be connected in other embodiments
The one end for connecing ratchet spanner is stretched out from shell.
Referring to Fig.2, driven sprocket 5 is sleeved on by key (not shown) on the cylindrical surface of driven shaft 4, driven shaft 4
The endoporus that the square protrusions 41 at both ends are inserted into the bushing of the bearing 113 of the second through-hole 112 is connect with 113 clearance fit of bearing,
One side of bearing 113 is stuck on the shaft shoulder 411.The square protrusions 41 that driven shaft 4 stretches out one end of left shell 11 are used for
Muff-coupling wrench sleeve.In the present embodiment, the both ends of driven shaft are stretched out from shell, can also be only had in other examples
One end of connection wrench socket is stretched out from shell.
Refering to fig. 1 and Fig. 2, drive sprocket 3 is equal with the diameter of driven sprocket 5 and the number of teeth, drive sprocket 3 and driven sprocket
5 engage connection by chain 6.
Illustrate the operation principle of the utility model below in conjunction with the accompanying drawings：
In use, selecting suitable wrench socket according to bolt specification to be removed.One end of wrench socket is socketed in
In the square boss 41 of driven shaft 4, the other end of wrench socket is socketed on bolt to be removed.On positive six side of driving shaft 2
Ratchet spanner is installed on shape boss 22.Rotating ratchet wrench, drive sprocket 3 rotate, and chain 6 drives driven sprocket 5 to rotate, torque
It is transmitted on sleeve to turn bolt to be removed by chain 6, driven sprocket 5, driven shaft 4.
It is the prior art not do the part illustrated in description above, or is achieved by the prior art.
Claims (7)
1. a kind of chain drive spanner, which is characterized in that including：Shell, driving shaft, drive sprocket, driven shaft, driven sprocket and
Chain；The shell is in flat, is left and right two parts along chain drive face subdivision, and left and right two parts accommodate actively to being encircled into
The cavity of sprocket wheel, driven sprocket and chain；Be correspondingly provided with first through hole in the opposite two side walls in one end of shell, shell it is another
It is correspondingly provided with the second through-hole in the opposite two side walls in one end；The drive sprocket, which is arranged, to be fixed on driving shaft, and driving shaft is logical
Bearing rotation is crossed to be set in first through hole；One end of driving shaft is stretched out from a side body, and external part is equipped with regular hexagon boss；Institute
It states driven sprocket and is arranged and be fixed on driven shaft, driven shaft is set to by bearing rotation in the second through-hole；One end of driven shaft from
Another side body stretches out, and external part is equipped with square protrusions；Drive sprocket engages connection with driven sprocket by chain.
2. chain drive spanner according to claim 1, which is characterized in that it is pros that the inner ring of the bearing, which is lined with endoporus,
The both ends of the bushing of shape, driving shaft and driven shaft are equipped with square protrusions compatible with the bushing endoporus, driving shaft and
Driven shaft is connect by square protrusions with bearing.
3. chain drive spanner according to claim 2, which is characterized in that between the bushing and driving shaft and driven shaft are
Gap coordinates.
4. chain drive spanner according to claim 1, which is characterized in that the indexing of the drive sprocket and driven sprocket
Circular diameter and the number of teeth are equal.
5. chain drive spanner according to claim 1, which is characterized in that the driving shaft is matched with drive sprocket for transition
It closes, driving shaft passes through key connection with drive sprocket；The driven shaft coordinates with driven sprocket for transition, driven shaft and driven sprocket
Pass through key connection.
6. chain drive spanner according to claim 1, which is characterized in that left and right two parts of the shell pass through groove
And boss is connected together.
7. chain drive spanner according to claim 1, which is characterized in that the outer ring of the bearing and the first of shell leads to
The hole wall of hole and the second through-hole welds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721620252.XU CN207746962U (en) | 2017-11-28 | 2017-11-28 | A kind of chain drive spanner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721620252.XU CN207746962U (en) | 2017-11-28 | 2017-11-28 | A kind of chain drive spanner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207746962U true CN207746962U (en) | 2018-08-21 |
Family
ID=63147549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721620252.XU Active CN207746962U (en) | 2017-11-28 | 2017-11-28 | A kind of chain drive spanner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207746962U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107717808A (en) * | 2017-11-28 | 2018-02-23 | 国家电网公司 | A kind of chain drive spanner |
| CN113183093A (en) * | 2021-06-08 | 2021-07-30 | 成都理工大学 | Synchronous handling instrument of many threaded fastener |
-
2017
- 2017-11-28 CN CN201721620252.XU patent/CN207746962U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107717808A (en) * | 2017-11-28 | 2018-02-23 | 国家电网公司 | A kind of chain drive spanner |
| CN113183093A (en) * | 2021-06-08 | 2021-07-30 | 成都理工大学 | Synchronous handling instrument of many threaded fastener |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |