CN201198025Y - Side frame integral core turning fixture - Google Patents
Side frame integral core turning fixture Download PDFInfo
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- CN201198025Y CN201198025Y CNU2008201053449U CN200820105344U CN201198025Y CN 201198025 Y CN201198025 Y CN 201198025Y CN U2008201053449 U CNU2008201053449 U CN U2008201053449U CN 200820105344 U CN200820105344 U CN 200820105344U CN 201198025 Y CN201198025 Y CN 201198025Y
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Abstract
The utility model discloses a side bearer one-piece core turning clamp which is composed of an upper clamp, a lower clamp and a connecting device of the upper clamp and the lower clamp, wherein, the upper clamp comprises an upper bearing frame which can be jointed at the front face of a lower half core main body and is used for providing a main locating surface of the upper clamp, a clamp beam which is fixed at the top part of the upper bearing frame and is used for clamping the outer side face of a cross beam of a lower half core, and two upper holding jaws which are symmetrically arranged on the clamp beam, wherein, the free ends of the upper holding jaws are inserted into the cross beam hole of the lower half core to be used for locking the upper clamp and the lower half core; and the lower clamp comprises a lower bearing frame which can be jointed at the front face and the inner side face of a lower half core cushion cap and is used for providing a main locating surface of the lower clamp, two lower clamping blocks which are symmetrically arranged at two corners of the top part of the lower bearing frame in a shape of a reversed Chinese character Eight and are respectively inserted into an oblique reinforcement groove of the lower half core and are used for clamping the side face of the oblique reinforcement groove, and a lower holding jaw which is arranged at the bottom of the lower bearing frame, wherein, the free end of the lower holding jaw is inserted into a cushion cap hole to be used for locking the lower clamp and the lower half core. The utility model can prevent sand cores from being damaged for uneven stress during the turning process.
Description
Technical field
The utility model relates to the anchor clamps field, is a kind of bogie side frame integral core turnover fixture specifically.
Background technology
The railway freight-car of the wheel track vehicles generally comprises parts such as car body, bogie, brake apparatus, coupler and draft gear.Wherein, bogie mainly is made up of, bogie side frame and bolster, axle box lubrication device, spring damper, brake rigging etc. wheel, and its effect is a supporting body, and guided vehicle is along rail running, and bears the various load from car body and circuit.Bogie side frame and bolster are the parts of bogie, and wherein: bogie side frame links together each parts of bogie, and to constitute an integral body, there is pedestal at its two ends, and in order to axle box to be installed, its middle part is provided with the spring cushion cap, in order to the mounting spring vibration absorber; Bolster is then together with center bearing, side bearing box cast solid, and its two end bearing is on spring, and the weight of car body and load are passed to the pillow spring of both sides by center bearing through bolster, and by bolster left and right two bogie side frames are connected.Bogie side frame, bolster adopt casting technique to make, and the quality of its quality is the influence safety of driving a vehicle directly, requires it can guarantee enough intensity, again can economical with materials, alleviate deadweight.
Along with updating and develop of bogie system, more and more higher to the bogie side frame performance demands.The bogie side frame of quality better, it must have inside and outside quality, blank size precision preferably, and preferable comprehensive mechanical property, especially anti-fatigue performance.For adapting to railway development needs and playing an active part in international competition, at present, domesticly developed a kind of bogie side frame integral body core manufacturing craft, can promote the quality of bogie side frame foundry goods comprehensively.
According to the bogie side frame integral core that this technology is made, form by two half identical cores.Please also refer to Figure 1A, Figure 1B, wherein: Figure 1A is the vertical view of second core; Figure 1B is the upward view of second core.This second core 100, the main body of intermediate portion is approximately trapezoidal: be made up of the perpendicular rib of a crossbeam 103, a cushion cap 109, two 105, two diagonal ribs 107; Crossbeam 103 is longer than cushion cap 109, and wherein, crossbeam 103 is provided with two crossbeam holes 102, and cushion cap 109 is provided with a cushion cap hole 108; Also outwards stretch at crossbeam 103 two ends, constitutes crossbeam alar part 101; Described two perpendicular ribs 105, two diagonal ribs 107 are symmetricly set between crossbeam 103, the cushion cap 109, and adjacent perpendicular rib 105 forms diagonal bar groove 106 with the joint portion of diagonal rib 107.Shown in Figure 1A, Figure 1B, the shape of second core 100 is very complicated, and its front is uneven, and its back side, crossbeam lateral surface 104, cushion cap medial surface 110, crossbeam alar part 101 fronts are approximately the plane.This half core 100, its core longer dimension, thickness is (only being 66-75mm) as thin as a wafer, and, complex-shaped, intensity is lower, weight big (about 90Kg), cause upper and lower half core in group to time carrying, lifting difficulty (group to after, the heavily about 180Kg of bogie side frame integral core).
Especially, in the production process of bogie side frame integral core, producing upper and lower half core (its structure, shape identical) respectively, needing after 180 ° of second core upsets, again that first core and second core is bonding, finally form the bogie side frame integral core.Because second core 100 has size length, thin thickness, intensity is low, weight is big, its upset is very inconvenient, also causes the damage of core easily.This be because: adopts common upset scheme, overturn, lift upset, when upset machinery by hand as the people, second core 100 is stressed, rather than face or line are stressed; Its lifting surface area is minimum, and the intensity of core is extremely low, easily causes core to fracture, damage because of unbalance stress thus.
Adopt common mode half core that overturns, not only easily cause core to fracture, damage, influence the quality of fuse, and upset, lifting are very inconvenient, its labour intensity is big, and production efficiency is lower.
The utility model content
In view of this, the utility model provides a kind of bogie side frame integral core turnover fixture, can overcome the problem of damaging because of the core unbalance stress in the switching process of bogie side frame integral core.
For solving above technical problem, the bogie side frame integral core turnover fixture that the utility model provides, be applicable to the upset of second core, be made up of last anchor clamps, lower clamp and jockey thereof: the described anchor clamps of going up comprise, one upper support frame, the front of second core main body of can fitting is used to provide the described main locating surface of going up anchor clamps; One clamping beam is fixed on the top of described upper support frame, is used for the crossbeam lateral surface of second core of clamping; Two upper gripper jaws are symmetricly set on the described clamping beam, and its free end inserts respectively in the crossbeam hole of second core, are used for described locking of going up between anchor clamps and second core; Described lower clamp comprises, a lower supporting frame, and the cushion cap front and the medial surface of second core of can fitting are used to provide the main locating surface of lower clamp; Twice grip blocks are " the Eight characters " shape and are symmetricly set on two jiaos of positions at described lower supporting frame top, and it inserts respectively in the diagonal bar groove of second core, is used for the side of this diagonal bar groove of clamping; Jaw once is arranged on the bottom of described lower supporting frame, and its free end inserts in the cushion cap hole of second core, is used for the locking between described lower clamp and second core.
Preferably, the described anchor clamps of going up also comprise grip block on two, are symmetricly set on the two ends of described clamping beam, are respectively applied for the crossbeam alar part front of second core of clamping.
Preferably, design for conformal between the crossbeam alar part front of the clamping face of described upward grip block and second core.
Preferably, design for conformal between the side of the clamping face of described grip block down and second core diagonal bar groove.
Preferably, described lower clamp also is provided with an anti-flake, is fixed on described lower supporting frame bottom, is used for preventing that described jaw down from deviating from from the cushion cap hole of second core.
Preferably, between described upper support frame bottom and the described lower supporting frame top, connect by described jockey.
Preferably, described jockey is a slide block; One end of described slide block is connected with upper support frame bottom, and its other end inserts in the connecting hole of described lower supporting frame top setting.
Preferably, the top of described upper support frame is provided with surface of revolution, is used to make anchor clamps to rotate around it.
Preferably, the bottom of described lower supporting frame is provided with handle.
Preferably, described upper support frame, clamping beam, last grip block and following grip block are that solid wood is manufactured, and cover the protection steel plate outward.
Compared with prior art, the bogie side frame integral core turnover fixture that the utility model provides: the fit front of second core main body of upper support frame, lower supporting frame applying cushion cap front, medial surface make it have bigger location area; Clamping beam is clamped in the crossbeam lateral surface, and contact area is bigger between the two; Following grip block inserts in the diagonal bar groove, and forms bigger clamping face between diagonal bar groove side; Upper gripper jaw inserts the crossbeam hole, and following jaw inserts the cushion cap hole, guarantees reliably to lock with second core.Thus, can overcome the problem of damaging because of the core unbalance stress in the switching process of bogie side frame integral core, concrete reason is: between its locating surface, clamping face and second core bigger contact-making surface is arranged, can increase the core lifting surface area, prevent the core unbalance stress; Clamping face is arranged on the side of second core, makes the direction of chucking power concentrate on the side direction of second core, and core is thicker relatively on this direction, intensity is higher, can bear bigger external force; The height of last folder melon, following jaw is the thickness of second core, and the distance that goes up between folder melon, the following jaw is the width of crossbeam to the cushion cap bottom surface, makes whole second core reliably be locked by anchor clamps; By upper gripper jaw, the locking of jaw down, keep second core normally stressed, prevent accident, reduce the possibility that core damages, guarantee the quality of fuse.
In addition, grip block is set, further increases clamping face second core; The clamping face of last grip block, following grip block designs for conformal, increases contact, the lifting surface area of second core; Anti-flake is set, prevents down that jaw deviates from from the cushion cap hole, increase security reliability; Connect by slide block between upper support frame bottom, the lower supporting frame top, simple operation improves connection reliability; Surface of revolution is set, and pull handle can make anchor clamps rotate 180 °, also makes second core that is held rotate same angle, realizes turning operation, reduces labour intensity, enhances productivity; The critical piece of anchor clamps is that solid wood is manufactured, and its weight is lighter, and is easy to use; Cover thin protection steel plate outward, improve security reliability.
The bogie side frame integral core turnover fixture that the utility model provides has solved the problem that the bogie side frame integral core causes core to damage because of unbalance stress in switching process.It is simple in structure, reliability is high, safe in utilization, durable in use, not only be convenient to operation, reduce labour intensity, enhance productivity, can also reduce the production use cost effectively.
Description of drawings
Figure 1A is the vertical view of second core;
Figure 1B is the upward view of second core;
Fig. 2 A is the structural representation of the utility model anchor clamps;
Fig. 2 B is the cutaway view of A-A face among Fig. 2 A;
Fig. 3 A is an enlarged drawing of going up anchor clamps among Fig. 2 A;
Fig. 3 B is the side view of Fig. 3 A;
Fig. 4 A is the enlarged drawing of lower clamp among Fig. 2 A;
Fig. 4 B is the side view of Fig. 4 A;
Fig. 5 is the schematic diagrames of the utility model anchor clamps when second core of clamping.
Among the figure, relevant Reference numeral is as follows:
Second core of 100-;
101-crossbeam alar part, 102-crossbeam hole, 103-crossbeam, 104-crossbeam lateral surface;
105-erects rib;
106-diagonal bar groove;
The 107-diagonal rib;
108-cushion cap hole, 109-cushion cap, 110-cushion cap medial surface;
The 200-anchor clamps;
The last anchor clamps of 210-, the last grip block of 211-, 212-upper gripper jaw, 213-clamping beam, 214-upper support frame;
The 220-lower clamp, grip block under the 221-, the 222-lower supporting frame, the 223-handle, 224-prevents flake, jaw under the 225-, 226-connecting hole;
The 230-slide block.
The specific embodiment
For ease of explanation, earlier relational term is explained as follows:
Bogie side frame: belonging to the railway freight-car running gear, is a key member in the bogie system, the weight of carrying goods train vehicle; It has a plurality of inner chambers and endoporus, and shape is very complicated.
Core: be a vocabulary commonly used in the casting technology field, refer to that foundry goods is placed in the casting mold cavity in casting process, in order to formation foundry goods endoporus (chamber, hole etc.), and an object identical with hole shape in the foundry goods.It forms complete foundry goods with casting mold; It is formed by binding agent and silica sand bonding, and intensity is lower, and is fragile.
Bogie side frame integral core: during coremaking, the grouping core in the bogie side frame inner chamber is formed together an integral sand core of formation; This integral sand core is identical with original core group overall shape.
Basic design of the present utility model is, according to the design feature of second core 100 locating surface, the clamping face of anchor clamps is set, and increases contact, the lifting surface area of second core 100, prevents its unbalance stress; Make clamping face mainly be arranged on second core 100 sides that core is relatively thicker, intensity is higher, to bear bigger external force.
Below in conjunction with drawings and the specific embodiments the utility model is described.
Please also refer to Fig. 2 A, Fig. 2 B, wherein, Fig. 2 A is the structural representation of the utility model anchor clamps; Fig. 2 B is the cutaway view of A-A face among Fig. 2 A.This kind anchor clamps 200 are made up of last anchor clamps 210, lower clamp 220 and jockey thereof (figure does not show), and it is applicable to the upset of second core 100, can prevent that core from damaging because of unbalance stress.
The described anchor clamps 210 of going up comprise: a upper support frame 214, and the front of second core 100 main bodys of can fitting is used to provide the main locating surface of anchor clamps 210; One clamping beam 213 is fixed on the top of upper support frame 214, is used for the crossbeam lateral surface 104 of second core 100 of clamping; Two upper gripper jaws 212 are symmetricly set on the clamping beam 213, and its free end inserts respectively in the crossbeam hole 102 of second core 100, are used for the locking between anchor clamps 210 and second core 100.
Described lower clamp 220 comprises: a lower supporting frame 222, the cushion cap 109 of second core 100 of can fitting positive with medial surfaces 110, be used to provide the main locating surface of lower clamp 220; Twice grip blocks 221 are " the Eight characters " shape and are symmetricly set on two jiaos of positions at lower supporting frame 222 tops, and it inserts respectively in the diagonal bar groove 106 of second core 100, is used for the side of this diagonal bar groove 106 of clamping; Once jaw 225, are arranged on the bottom of lower supporting frame 222, and its free end inserts in the cushion cap hole 108 of second core 100, are used for the locking between lower clamp 220 and second core 100.
This kind anchor clamps 200 can overcome the problem that second core 100 damages because of the core unbalance stress in switching process.Concrete reason is: the fit front of second core 100 main bodys of upper support frame 214, and the front of lower supporting frame 222 applying cushion caps 109, and cushion cap medial surface 110 have bigger location area; Clamping beam 213 is clamped in crossbeam lateral surface 104, and contact area is bigger between the two; Following grip block 221 inserts in the diagonal bar groove 106, and forms reliable clamping face between diagonal bar groove 106 sides; Upper gripper jaw 212 inserts crossbeam hole 102, and following jaw 225 inserts in the cushion cap hole 108, guarantees reliably to lock with second core 100.Locating surface, clamping face are set in a manner described, can increase and second core 100 between contact-making surface, increase the core lifting surface area, prevent its unbalance stress; Clamping face mainly is arranged on the side of second core 100, can make the direction of chucking power concentrate on the side direction of second core 100, and on this direction, its core is thicker relatively, intensity is higher, can bear bigger external force; Because the height of last folder melon 212, following jaw 225 is the thickness of second core 100, and the distance that goes up between folder melon 212, the following jaw 225 is the width of crossbeam 103 to cushion cap 109 bottom surfaces, and second core 100 is locked by anchor clamps 200; By upper gripper jaw 212, the locking of jaw 225 down, keep second core 100 normally stressed in switching process, prevent accident, reduce the possibility that core damages, guarantee the quality of fuse.
Please also refer to Fig. 3 A, Fig. 3 B, wherein, Fig. 3 A is an enlarged drawing of going up anchor clamps among Fig. 2 A; Fig. 3 B is the side view of Fig. 3 A.On last anchor clamps 210, grip block 211 on two also is set, it is symmetricly set on the two ends of clamping beam 213.Last grip block 211 fits with crossbeam alar part 101 fronts, and its contact-making surface is called the clamping face of grip block, and it designs for conformal.Last grip block 211 can increase the clamping face to second core 100, and it designs for conformal, can increase the lifting surface area of second core 100, further prevents the core unbalance stress.
Please also refer to Fig. 4 A, Fig. 4 B, wherein, Fig. 4 A is the enlarged drawing of lower clamp among Fig. 2 A; Fig. 4 B is the side view of Fig. 4 A.On lower clamp 220, twice grip block 221 can insert in the diagonal bar groove 106, and the contact-making surface of itself and diagonal bar groove 106 is called the clamping face of grip block down.The clamping face of described down grip block design for conformal, can increase contact, the lifting surface area of second core 100, reduction core unbalance stress and the possibility damaged.
Especially, an anti-flake 224 is set on the lower clamp 220, it is fixed on lower supporting frame 222 bottoms, can prevent down that jaw 225 deviates from from the cushion cap hole 108 of second core 100, guarantees reliably to lock the raising security reliability between lower clamp 220 and second core 100.
Described going up between anchor clamps 210, the lower clamp 220 connects into whole anchor clamps 200 by jockey, and its connected mode, connecting portion can adopt multiple technique known scheme, is as the criterion to guarantee anchor clamps 210,220 reliable connections of lower clamp.Preferably, in upper support frame 214 bottoms, lower supporting frame is provided with jockey between 222 tops, by its will go up anchor clamps 210, lower clamp 220 links into an integrated entity.Preferably, jockey adopts a slide block 230, and the one end is connected with upper support frame bottom 214, and its other end inserts in the connecting hole 226 of lower supporting frame 222 tops setting.Connect by slide block 230 between upper support frame 214 bottoms, lower supporting frame 222 tops, its simple operation, and improve connection reliability.
For the convenience, laborsaving of overturning, the top of described upper support frame 214 is provided with surface of revolution, and its radius of curvature is about 70mm.By this surface of revolution, can make anchor clamps 200 and second core 100 of being held around its rotation.For ease of operation, handle 223 is set in the bottom of lower supporting frame 222.Pull handle 223 can make anchor clamps 200 rotate 180 °, and simultaneously, second core 100 that is held rotates same angle.Thus, realize turning operation, reduce labour intensity, enhance productivity.
And, the critical piece of anchor clamps 200, as above bearing support 214, clamping beam 213, go up grip block 211 and grip block 221 etc. down, be solid wood to manufacture, each parts connects by nail or bolt, its weight is lighter, and is easy to use; Cover thickness outward and be the thin protection steel plate about 1mm, improve security reliability, and increase the service life.
More than structure of the present utility model is illustrated, according to said structure, the anchor clamps 200 that the utility model provides can overcome in the switching process of bogie side frame integral core because of the core unbalance stress produces the problem of damage, further specify as follows:
Please refer to Fig. 5, the schematic diagram of the utility model anchor clamps when second core of clamping.In use: the folder melon 212 of going up that will go up on the anchor clamps 210 inserts in the crossbeam hole 102 of second core 100; Last grip block 211 on the anchor clamps 210 is placed on crossbeam alar part 101 fronts of second core 1, and the clamping face of grip block 211 and crossbeam alar part 101 fronts fit in the assurance; Following folder melon on the lower clamp 220 225 is inserted in the cushion cap hole 108 of second core 100; Following grip block 221 on the lower clamp 220 is inserted in the diagonal bar groove 106 of second core 100 both sides, and the side of the clamping face of grip block 221 and diagonal bar groove 106 fits in the assurance; Slide block 230 in the promotion on the anchor clamps 210 is inserted in the connecting hole 226 on the lower clamp 220; Thus, anchor clamps 210, lower clamp 220 are linked into an integrated entity.At this moment, on press from both sides melon 212, down the height of jaw 225 is the thickness of second core 100, and go up folder melon 212, the distance between the jaw 225 is the width of crossbeam 103 to cushion cap 109 bottom surfaces down.Whole second core 100 by anchor clamps 200 fastenings after, by pull handle 223, make anchor clamps 200, clamped second core 100, rotate 180 ° around the surface of revolution at upper support frame 214 tops, thereby finish turning operation.
As shown in Figure 5, during with anchor clamps 200 second cores 100 of upset, the stressed of core is face, and it is stressed evenly; And the direction of chucking power concentrates on the side direction that core is relatively thicker, intensity is higher, further reduces the possibility that core damages, and guarantees the quality of fuse.In addition, use this kind anchor clamps 200, it is very convenient just to do, and can reduce artificial labour intensity, enhances productivity.
The bogie side frame integral core turnover fixture 200 that the utility model provides, solved the problem that the bogie side frame integral core causes core to damage because of unbalance stress in switching process, it is simple in structure, reliability is high, safe in utilization, durable in use, not only be convenient to operation, reduce labour intensity, enhance productivity, can also reduce the production use cost effectively.
The above only is a preferred implementation of the present utility model, should be pointed out that above-mentioned preferred implementation should not be considered as restriction of the present utility model, and protection domain of the present utility model should be as the criterion with claim institute restricted portion.For those skilled in the art, in not breaking away from spirit and scope of the present utility model, can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (10)
1. a bogie side frame integral core turnover fixture is applicable to the upset of second core, it is characterized in that: be made up of last anchor clamps, lower clamp and jockey thereof; The described anchor clamps of going up comprise, a upper support frame, and the front of second core main body of can fitting is used to provide the described main locating surface of going up anchor clamps; One clamping beam is fixed on the top of described upper support frame, is used for the crossbeam lateral surface of second core of clamping; Two upper gripper jaws are symmetricly set on the described clamping beam, and its free end inserts respectively in the crossbeam hole of second core, are used for described locking of going up between anchor clamps and second core; Described lower clamp comprises, a lower supporting frame, and the cushion cap front and the medial surface of second core of can fitting are used to provide the main locating surface of lower clamp; Twice grip blocks are " the Eight characters " shape and are symmetricly set on two jiaos of positions at described lower supporting frame top, and it inserts respectively in the diagonal bar groove of second core, is used for the side of this diagonal bar groove of clamping; Jaw once is arranged on the bottom of described lower supporting frame, and its free end inserts in the cushion cap hole of second core, is used for the locking between described lower clamp and second core.
2. anchor clamps as claimed in claim 1 is characterized in that: the described anchor clamps of going up also comprise grip block on two, are symmetricly set on the two ends of described clamping beam, are respectively applied for the crossbeam alar part front of second core of clamping.
3. anchor clamps as claimed in claim 2 is characterized in that: design for conformal between the clamping face of described upward grip block and the crossbeam alar part front of second core.
4. anchor clamps as claimed in claim 3 is characterized in that: design for conformal between the clamping face of described grip block down and the side of second core diagonal bar groove.
5. as each described anchor clamps of claim 1-4, it is characterized in that: described lower clamp also is provided with an anti-flake, is fixed on described lower supporting frame bottom, is used for preventing that described jaw down from deviating from from the cushion cap hole of second core.
6. anchor clamps as claimed in claim 5 is characterized in that: between described upper support frame bottom and the described lower supporting frame top, connect by described jockey.
7. anchor clamps as claimed in claim 6 is characterized in that: described jockey is a slide block; One end of described slide block is connected with upper support frame bottom, and its other end inserts in the connecting hole of described lower supporting frame top setting.
8. anchor clamps as claimed in claim 7 is characterized in that: the top of described upper support frame is provided with surface of revolution, is used to make anchor clamps to rotate around it.
9. anchor clamps as claimed in claim 8 is characterized in that: the bottom of described lower supporting frame is provided with handle.
10. anchor clamps as claimed in claim 9 is characterized in that: described upper support frame, clamping beam, last grip block and following grip block are that solid wood is manufactured, and cover the protection steel plate outward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201053449U CN201198025Y (en) | 2008-05-08 | 2008-05-08 | Side frame integral core turning fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201053449U CN201198025Y (en) | 2008-05-08 | 2008-05-08 | Side frame integral core turning fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201198025Y true CN201198025Y (en) | 2009-02-25 |
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ID=40449182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201053449U Expired - Fee Related CN201198025Y (en) | 2008-05-08 | 2008-05-08 | Side frame integral core turning fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201198025Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102166619A (en) * | 2011-03-30 | 2011-08-31 | 潍柴动力股份有限公司 | Core assembling process of engine cylinder head and core assembling mould used in same |
| CN102114601B (en) * | 2009-12-31 | 2013-09-11 | 山西晋西精密机械有限责任公司 | Special clamp for manufacturing lateral frame of railway vehicle |
-
2008
- 2008-05-08 CN CNU2008201053449U patent/CN201198025Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102114601B (en) * | 2009-12-31 | 2013-09-11 | 山西晋西精密机械有限责任公司 | Special clamp for manufacturing lateral frame of railway vehicle |
| CN102166619A (en) * | 2011-03-30 | 2011-08-31 | 潍柴动力股份有限公司 | Core assembling process of engine cylinder head and core assembling mould used in same |
| CN102166619B (en) * | 2011-03-30 | 2013-03-20 | 潍柴动力股份有限公司 | Core assembling process of engine cylinder head and core assembling mould used in same |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090225 Termination date: 20140508 |