CN211470509U - Auxiliary device for hoisting plate hammer - Google Patents
Auxiliary device for hoisting plate hammer Download PDFInfo
- Publication number
- CN211470509U CN211470509U CN201921119118.0U CN201921119118U CN211470509U CN 211470509 U CN211470509 U CN 211470509U CN 201921119118 U CN201921119118 U CN 201921119118U CN 211470509 U CN211470509 U CN 211470509U
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- hole
- plate
- limiting
- positioning
- hammer
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Abstract
The utility model relates to a lifting device technical field, concretely relates to hammer hoist and mount auxiliary device, its characterized in that: including lifting by crane the support, lift by crane the support and include the crossbeam and respectively the vertical fixation locate two hoisting plates at crossbeam both ends, the lifting hole has been seted up on the crossbeam, the location round hole has been seted up on the hoisting plate free end, all rotatable and separable the inserting of equal rotatable in the round hole of location is equipped with the locating pin axle, locating pin axle one end is fixed to be equipped with the location fixture block, the location fixture block can block to locate in the hoist and mount hole of reserving on the board hammer, the separable handle that is equipped with on the locating pin axle, thereby the upset of handle rotatable locating pin axle drive board hammer, it is used for restricting locating pin axle to break away from the locating round hole and allows the locating. The utility model has the advantages of simple overall structure, practical reliable, when hoisting the board hammer, can easily overturn to the board hammer through the handle, the simple operation, labour saving and time saving is convenient for carry out fast switch over to the face of striking of board hammer, improves the utilization ratio of board hammer.
Description
Technical Field
The utility model relates to a lifting device technical field, specificly relate to a bar hoist and mount auxiliary device.
Background
Generally, the horizontal impact crusher can be used for primary crushing, secondary crushing, tertiary crushing and recycling, is usually suitable for crushing stones with low hardness, brittleness and less abrasion, and is not suitable for materials with high hardness and strong abrasion, and is provided with a plate hammer, a rotor and an impact plate, wherein the plate hammer is driven by the driving rotor to rotate at a high speed, so that fed materials are crushed due to high-speed intensive impact, and then the materials are further crushed through collision with the impact plate and mutual collision among the materials, so that the plate hammer is a vulnerable part on equipment and often needs to be replaced, however, because the plate hammer is heavy, if an external tool is not used, the switching among a plurality of impact surfaces of the plate hammer and the replacement of the plate hammer are troublesome, time and labor are wasted, the equipment is long in shutdown time, and production is delayed.
In order to solve the problem, the utility model with the granted publication number of CN201148307Y provides a lifting and flanging tool for a plate hammer of an impact crusher. The utility model discloses a pair of impact crusher board hammer hoist and mount and turn-ups instrument that the patent provided, characterized by sets up a door type hoist and mount frame, the balance point at its crossbeam sets up the lifting hole, the door frame width can hold the board hammer, set up two at least screws on the door type hoist and mount frame both sides respectively and twist the bolt and match with the lifting hole that the board hammer both sides were reserved, however it need twist a plurality of bolts and fix when hoist and mount, when the board hammer will overturn and change the face of striking, still need dismantle partial bolt, whole operation process is complicated and waste time and energy, simultaneously because the board hammer itself is heavier, it is also comparatively arduous when directly bare-handed the board hammer when going to turn over hoist and mount carries out the switching of face of striking, and unsafe, the upset switching speed of board hammer face has been influenced, the equipment dead time is prolonged, production delays.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide an overall structure is simple, practical reliable, when hoisting the board hammer, can easily overturn to the board hammer through the handle, the simple operation, labour saving and time saving is convenient for carry out the fast switch-over to the face of striking of board hammer, improves a board hammer hoist and mount auxiliary device of the utilization ratio of board hammer.
In order to solve the technical problem, the utility model discloses a technical scheme as follows: the utility model provides a board hammer hoist and mount auxiliary device, including lifting by crane the support, lift by crane the support and include the crossbeam and respectively the vertical fixation locate two hoisting plates at crossbeam both ends, the lifting hole has been seted up on the crossbeam, be formed with the hoist and mount groove that is used for holding the board hammer between crossbeam and two hoisting plates, the location round hole has been seted up on the hoisting plate free end, all rotatable and separable the inserting in the location round hole is equipped with the locating pin axle, locating pin axle one end is fixed to be equipped with the location fixture block, the location fixture block can block locates in the hoist and mount hole of reserving on the board hammer, hole and locating fixture block looks adaptation, still separable the handle that is equipped with on the locating pin axle, thereby the upset of the rotatable locating pin axle drive board hammer of handle, still be equipped with on lifting by crane the support and be used for.
Furthermore, the positioning fixture blocks on the two positioning pin shafts are all in a polygonal column shape.
Furthermore, the positioning fixture block on one positioning pin shaft is in a polygonal column shape, and the positioning fixture block on the other positioning pin shaft is in a column shape.
Furthermore, a positioning sleeve is fixedly arranged on the outer end face of the hoisting plate at the positioning round hole, and the inner diameter of the positioning sleeve is consistent with that of the positioning round hole.
Furthermore, stop gear includes spacing part and the spacing recess of annular with spacing part looks adaptation, and the locating pin rolls the surface and inwards caves in and is formed with the spacing recess of annular, and spacing part is connected and can block in the spacing recess of annular with the position sleeve detachable.
Furthermore, the limiting part is a limiting bolt, a threaded hole communicated with the inner hole of the positioning sleeve is formed in the positioning sleeve, and the limiting bolt is in threaded connection with the positioning sleeve through the threaded hole.
Furthermore, the handle is cylindrical, a connecting hole matched with the handle is formed in the positioning pin shaft, and the handle is detachably inserted into the connecting hole.
Furthermore, the lifting plate is hinged with a limiting frame, the limiting frame is provided with a clamping groove matched with the width of the plate hammer, and the limiting frame can be clamped at the upper end of the plate hammer through the clamping groove and plays a limiting and fixing role on the plate hammer during lifting.
Further, spacing including two limiting plates that are parallel arrangement each other and are the L style of calligraphy, the fixed connecting plate that is equipped with between two limiting plates, surround between connecting plate and two limiting plates and be formed with the draw-in groove, play the fixed articulated seat that is equipped with on the hanger plate, seted up first hinge hole on the articulated seat, the second hinge hole has been seted up to the one end of limiting plate, thereby the first hinge hole can be worn to be equipped with bolt assembly with the second hinge hole and realize spacing and the articulated of hanger plate.
Furthermore, still fixedly on the articulated seat being equipped with the fixed plate, seted up first through-hole on the fixed plate, seted up corresponding second through-hole on the limiting plate, fixed lock nut that is equipped with in first through-hole department on the fixed plate, thereby can wear to be equipped with in first through-hole and the second through-hole with lock nut threaded connection's lock bolt play the fixed action to spacing.
As can be seen from the above description, the utility model provides a board hammer hoisting auxiliary device overall structure is simple, practical and reliable, when hoisting the board hammer, can easily rotate the positioning pin shaft through the handle to drive the upset of board hammer and carry out the switch of board hammer strike face, whole operation process is easy, convenient, fast and safe, time and labor are saved, equipment downtime is effectively reduced, thereby equipment production efficiency can be improved, through the strike face of upset switching board hammer, the utilization ratio of board hammer can be improved, through the limit bolt and screw hole threaded connection and block locate in annular spacing recess but not push up the positioning pin shaft tightly, thereby can ensure that the positioning pin shaft can not break away from the positioning sleeve, make the hoisting process of board hammer safer, effectively guarantee the personal safety of operating personnel, simultaneously can ensure that the positioning pin shaft can rotate in the positioning sleeve, thereby, the handle can rotate the positioning pin shaft and drive the upset of board hammer to carry out the switch of strike face, through the setting of spacing, when lifting by crane the support through locating pin axle hoist and mount board hammer, draw-in groove on the spacing can block locate board hammer upper end border and play the spacing fixed to the board hammer, avoids the rotation of board hammer at the hoist and mount in-process, ensures safety.
Drawings
Fig. 1 is a three-dimensional structure decomposition diagram of a hammer hoisting auxiliary device in the first embodiment of the present invention.
Fig. 2 is a partially enlarged schematic view of a portion a in fig. 1.
Fig. 3 is a partially enlarged schematic view of a portion B in fig. 1.
Fig. 4 is a schematic view of a usage state of the board hammer hoisting auxiliary device in the first embodiment of the present invention.
Fig. 5 is a partially enlarged schematic view of C in fig. 4.
Fig. 6 is a schematic perspective view of a positioning pin shaft in the second embodiment of the present invention.
In the figure: 1-hoisting a bracket; 11-a cross beam; 111-lifting holes; 12-lifting the hanger plate; 121-positioning round holes; 13-hoisting the groove; 14-a positioning sleeve; 141-a threaded hole; 142-an inner bore; 15-a hinged seat; 151-first hinge hole; 16-a fixed plate; 161-a first via; 162-a locking nut; 2-positioning a pin shaft; 21-positioning a fixture block; 22-connecting hole; 3-a handle; 4-a limiting mechanism; 41-a limiting part; 42-annular limit groove; 5-a limiting frame; 51-a limiting plate; 511-a second hinge hole; 512-second via; 52-a connecting plate; 53-card slot; 6-bolt assembly; 7-plate hammer.
Detailed Description
The present invention will be further described with reference to the following detailed description.
Example one
As shown in fig. 1 to 5, the auxiliary device for lifting a board hammer of the present invention comprises a lifting support 1, wherein the lifting support 1 comprises a cross beam 11 and two lifting plates 12 respectively and vertically fixed at two ends of the cross beam 11, the cross beam 11 is provided with a lifting hole 111, a lifting groove 13 for accommodating the board hammer 7 is formed between the cross beam 11 and the two lifting plates 12, a positioning circular hole 121 is formed at a free end of the lifting plate 12, a positioning pin 2 is rotatably and detachably inserted in the positioning circular hole 121, one end of the positioning pin 2 is fixedly provided with a positioning fixture block 21, the positioning fixture block 21 can be clamped in a lifting hole reserved on the board hammer 7, the lifting hole is adapted to the positioning fixture block 21, the positioning pin 2 is further detachably provided with a handle 3, the handle 3 can rotate the positioning pin 2 to drive the board hammer 7 to turn over, the hoisting support 1 is further provided with a limiting mechanism 4 which is used for limiting the positioning pin shaft 2 to be separated from the positioning round hole 121 and allowing the positioning pin shaft 2 to rotate.
When the board hammer 7 is hoisted, the positioning pin shaft 2 can be easily rotated through the handle 3 so as to drive the board hammer 7 to overturn and switch the hitting surface of the board hammer 7, the whole operation process is easy, convenient, fast and safe, time and labor are saved, the equipment downtime is effectively reduced, thereby improving the production efficiency of the device, improving the utilization rate of the plate hammer 7 by switching the striking surface of the plate hammer 7 in a turnover way, and through the arrangement of the limiting mechanism 4, the positioning pin shaft 2 can not be separated from the positioning sleeve 14, so that the lifting process of the plate hammer 7 is safer, the personal safety of operators is effectively ensured, meanwhile, the positioning pin shaft 2 can be ensured to rotate in the positioning sleeve 14, so that the subsequent rotation of the positioning pin shaft 2 by the handle 3 and the driving of the plate hammer 7 to overturn for switching the striking surfaces of the plate hammer 7 are facilitated.
As shown in fig. 2 and 3, the positioning fixture block 21 on one of the positioning pins 2 is polygonal cylindrical, and the positioning fixture block 21 on the other one of the positioning pins 2 is cylindrical, so that when the positioning pin 2 is rotated by the handle 3, the corresponding end of the board hammer 7 can be driven and the board hammer 7 can be turned over as a whole, so that the striking surface of the board hammer 7 can be quickly turned over and switched, and at the same time, the other end of the board hammer 7 can be rotated around the cylindrical positioning fixture block 21.
As shown in fig. 2 and 3, a positioning sleeve 14 is further fixedly arranged on the outer end face of the lifting plate 12 at the positioning round hole 121, the inner diameter of the positioning sleeve 14 is consistent with the diameter of the positioning round hole 121, and the positioning pin shaft 2 is simultaneously inserted into the positioning round hole 121 and the positioning sleeve 14 through the positioning sleeve 14, so that the positioning pin shaft 2 is more stably arranged on the lifting support 1, and the smooth hoisting process of the board hammer 7 is ensured.
As shown in fig. 2, 3 and 5, the limiting mechanism 4 includes a limiting component 41 and an annular limiting groove 42 adapted to the limiting component 41, the outer surface of the positioning pin 2 is recessed inward and forms the annular limiting groove 42, the limiting component 41 is detachably connected to the positioning sleeve 14 and can be clamped in the annular limiting groove 42, the limiting component 41 is a limiting bolt, the positioning sleeve 14 is provided with a threaded hole 141 communicated with an inner hole 142 of the positioning sleeve 14, the limiting bolt is in threaded connection with the positioning sleeve 14 through the threaded hole 141, is in threaded connection with the threaded hole 141 through the limiting bolt and is clamped in the annular limiting groove 42 but does not tightly abut against the positioning pin 2, so as to ensure that the positioning pin 2 cannot be separated from the positioning sleeve 14, and make the lifting process of the plate hammer 7 safer, effectively guarantee operating personnel's personal safety, can ensure simultaneously the locating pin axle 2 can rotate in the position sleeve 14, thereby, the handle 3 can rotate the locating pin axle 2 and drive the upset of slap hammer 7 carries out the switching of hitting the face.
As shown in fig. 1, 2 and 4, the handle 3 is cylindrical, the positioning pin shaft 2 is provided with a connecting hole 22 matched with the handle 3, and the handle 3 is detachably inserted into the connecting hole 22, so that the overall structure is simple, the handle 3 is convenient to disassemble and assemble between the positioning pin shafts 2, and the positioning pin shafts 2 are convenient to rotate, and the turnover switching of the striking surface of the hammer 7 is easier and more labor-saving.
As shown in fig. 1 and 4, the lifting plate 12 is further hinged with a limiting frame 5, the limiting frame 5 is provided with a clamping groove 53 adapted to the width of the plate hammer 7, the limiting frame 5 can be clamped at the upper end of the plate hammer 7 through the clamping groove 53 and plays a role in limiting and fixing the plate hammer 7 during lifting, when the lifting support 1 lifts the plate hammer 7 through the positioning pin shaft 2, the plate hammer 7 is centered, the limiting frame 5 is turned downwards and the clamping groove 53 is clamped at the upper end edge of the plate hammer 7 to play a role in limiting and fixing the plate hammer 7, so that the plate hammer 7 is prevented from rotating during lifting, and safety is ensured.
As shown in fig. 2, the limiting frame 5 includes two limiting plates 51 that are parallel to each other and are the L style of calligraphy, two the fixed connecting plate 52 that is equipped with between the limiting plate 51, connecting plate 52 and two surround between the limiting plate 51 and be formed with draw-in groove 53, it is fixed on hanger plate 12 and be equipped with articulated seat 15 to rise, first hinge hole 151 has been seted up on articulated seat 15, second hinge hole 511 has been seted up to limiting plate 51's one end, thereby first hinge hole 151 with can be equipped with bolt assembly 6 in the second hinge hole 511 and realize the limiting frame 5 with the articulated of hanger plate 12 rises.
As shown in fig. 2, the hinge seat 15 is further fixedly provided with a fixing plate 16, the fixing plate 16 is provided with a first through hole 161, the limiting plate 51 is provided with a second through hole 512 corresponding to the first through hole 512, the fixing plate 16 is provided with a locking nut 162 fixed at the first through hole 161, the first through hole 161 and the second through hole 512 are internally provided with a locking bolt in a threaded connection with the locking nut 162, so that the limiting frame 5 is fixed, and when the hoisting auxiliary tool is retracted and not used, the first through hole 161 and the second through hole 512 are internally provided with the locking bolt in a threaded connection with the locking nut 162, so that the limiting frame 5 is locked and fixed.
Example two
As shown in fig. 6, the present embodiment is different from the first embodiment in that: the positioning fixture blocks 21 on the two positioning pin shafts 2 are all in a polygonal column shape, when one of the positioning pin shafts 2 is driven by the handle 3 to rotate, the corresponding end of the board hammer 7 can be driven, and the whole board hammer 7 can be turned over, so that the striking face of the board hammer 7 can be quickly turned over and switched, and meanwhile, the other end of the board hammer 7 rotates around the positioning sleeve 14 on the corresponding side through the other positioning pin shaft 2. Other technical features are the same as those of the first embodiment.
A method for using a plate hammer hoisting auxiliary device is as follows: when the rotor positioning device is used, firstly, the flat hammer 7 is detached and loosened on the rotor, the lifting support 1 is lifted by external lifting equipment, the flat hammer 7 is moved to the position of the flat hammer 7 needing to be replaced or turned over to switch the striking surface, the flat hammer 7 is positioned in the lifting groove 13 of the lifting support 1, then the two positioning pin shafts 2 are sequentially inserted into the positioning sleeves 14 at the two ends of the lifting support 1, the two positioning pin shafts 2 are respectively clamped at the reserved lifting holes at the two ends of the flat hammer 7, then the limiting bolt is screwed into the threaded hole 141 on the positioning sleeve 14 and is clamped in the annular limiting groove 42 on the positioning pin shaft 2 but does not tightly push against the positioning pin shaft 2, so that the positioning pin shaft 2 can be ensured not to be separated from the positioning sleeve 14, and the positioning pin shaft 2 can be ensured to rotate in the positioning sleeve 14, then, the locking bolt is unscrewed to loosen the limiting frame 5, the board hammer 7 is centered, the limiting frame 5 is turned downwards, the clamping groove 53 on the limiting frame 5 is clamped at the upper end edge of the board hammer 7 to limit and fix the board hammer 7, the board hammer 7 is prevented from rotating in the hoisting process, the board hammer 7 is hoisted, then the limiting frame 5 is turned upwards, the clamping groove 53 of the limiting frame 5 is not clamped at the upper end edge of the board hammer 7, the handle 3 is inserted into the connecting hole 22 of the positioning pin shaft 2, attention needs to be paid to that the positioning pin shaft 2 is the positioning pin shaft 2 provided with the positioning clamping block 21 in a polygonal column shape, then the positioning pin shaft 2 is rotated through the handle 3 and the board hammer 7 is driven to turn over to realize switching of the striking surfaces of the board hammer 7, after the board hammer 7 is turned over, the limiting frame 5 is then put away, the clamping groove 53 of the limiting frame 5 is clamped at the upper end edge of the board hammer 7 again, the handle 3 is taken down, finally, the board hammer 7 is lifted and placed on the rotor again, after the board hammer is placed, the limiting bolt can be unscrewed, the positioning pin shaft 2 is taken out of the positioning sleeve 14, then the lifting support 1 is removed, and the board hammer 7 is fixedly installed again, generally speaking, one board hammer 7 is provided with four striking surfaces, three times of switching is needed to realize the use of the four striking surfaces in the using process, when the first striking surface of the board hammer 7 is worn, the board hammer 7 can be lifted and turned over for 180 degrees up and down, so that the board hammer 7 is switched for the first time, and when the second striking surface of the board hammer 7 is worn, the board hammer 7 is lifted, and the whole board hammer 7 is horizontally rotated for 180 degrees for the second time, when the third striking surface of the plate hammer 7 is worn, the plate hammer 7 can be lifted up and down to turn 180 degrees for the third switching, and when all four striking surfaces of the plate hammer 7 are worn, the plate hammer 7 needs to be replaced.
The aforesaid is only a plurality of concrete implementation manners of the utility model, nevertheless the utility model discloses a design concept is not limited to this, and the ordinary use of this design is right the utility model discloses carry out immaterial change, all should belong to the act of infringement the protection scope of the utility model.
Claims (10)
1. The utility model provides a board hammer hoist and mount auxiliary device which characterized in that: comprises a lifting bracket, the lifting bracket comprises a cross beam and two lifting plates which are respectively and vertically fixed at two ends of the cross beam, a lifting hole is arranged on the beam, a lifting groove for accommodating the board hammer is formed between the beam and the two lifting plates, the free end of the lifting plate is provided with a positioning round hole, a positioning pin shaft is rotatably and separably inserted in the positioning round hole, a positioning fixture block is fixedly arranged at one end of the positioning pin shaft and can be clamped in a hoisting hole reserved on the board hammer, the hoisting hole is matched with the positioning fixture block, the positioning pin shaft is also provided with a handle in a separable way, the handle can rotate the positioning pin shaft so as to drive the plate hammer to turn over, and the lifting support is further provided with a limiting mechanism which is used for limiting the positioning pin shaft to be separated from the positioning round hole and allowing the positioning pin shaft to rotate.
2. The auxiliary device for hoisting the plate hammer according to claim 1, wherein: the positioning fixture blocks on the two positioning pin shafts are all in a polygonal column shape.
3. The auxiliary device for hoisting the plate hammer according to claim 1, wherein: the positioning fixture block on one positioning pin shaft is in a polygonal column shape, and the positioning fixture block on the other positioning pin shaft is in a column shape.
4. The auxiliary device for hoisting the plate hammer according to claim 1, wherein: and the outer end face of the hoisting plate is also fixedly provided with a positioning sleeve at the positioning round hole, and the inner diameter of the positioning sleeve is consistent with the diameter of the positioning round hole.
5. The auxiliary device for hoisting the plate hammer according to claim 4, wherein: the limiting mechanism comprises a limiting component and an annular limiting groove matched with the limiting component, the outer surface of the positioning pin shaft is inwards sunken and is provided with the annular limiting groove, and the limiting component is detachably connected with the positioning sleeve and can be clamped in the annular limiting groove.
6. The auxiliary device for hoisting the plate hammer according to claim 5, wherein: the limiting part is a limiting bolt, a threaded hole communicated with the inner hole of the positioning sleeve is formed in the positioning sleeve, and the limiting bolt is in threaded connection with the positioning sleeve through the threaded hole.
7. The auxiliary device for hoisting the plate hammer according to claim 1, wherein: the handle is cylindrical, a connecting hole matched with the handle is formed in the positioning pin shaft, and the handle is detachably inserted into the connecting hole.
8. The auxiliary device for hoisting the plate hammer according to claim 1, wherein: the lifting plate is further hinged with a limiting frame, a clamping groove matched with the width of the plate hammer is formed in the limiting frame, and the limiting frame can be clamped at the upper end of the plate hammer and plays a limiting and fixing role in lifting the plate hammer.
9. The auxiliary device for hoisting the plate hammer according to claim 8, wherein: the limiting frame comprises two limiting plates which are parallel to each other and are L-shaped, a connecting plate is fixedly arranged between the limiting plates, the connecting plate and the two limiting plates are surrounded to form a clamping groove, a hinging seat is fixedly arranged on the lifting plate, a first hinging hole is formed in the hinging seat, a second hinging hole is formed in one end of the limiting plate, and therefore the first hinging hole and the second hinging hole can be internally provided with a bolt assembly in a penetrating mode to achieve the limiting frame and the lifting plate to be hinged.
10. The auxiliary device for hoisting the plate hammer according to claim 9, wherein: still fixedly on the articulated seat be equipped with the fixed plate, first through-hole has been seted up on the fixed plate, corresponding second through-hole has been seted up on the limiting plate, on the fixed plate in first through-hole department is fixed and is equipped with lock nut, first through-hole with can be equipped with in the second through-hole with lock nut threaded connection's lock bolt is right thereby it is right to play the fixed action to spacing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921119118.0U CN211470509U (en) | 2019-07-17 | 2019-07-17 | Auxiliary device for hoisting plate hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921119118.0U CN211470509U (en) | 2019-07-17 | 2019-07-17 | Auxiliary device for hoisting plate hammer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211470509U true CN211470509U (en) | 2020-09-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921119118.0U Expired - Fee Related CN211470509U (en) | 2019-07-17 | 2019-07-17 | Auxiliary device for hoisting plate hammer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211470509U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113997389A (en) * | 2021-11-16 | 2022-02-01 | 苏州华昇建筑科技有限公司 | Prefabricated part forming die and prefabricated part processing method |
-
2019
- 2019-07-17 CN CN201921119118.0U patent/CN211470509U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113997389A (en) * | 2021-11-16 | 2022-02-01 | 苏州华昇建筑科技有限公司 | Prefabricated part forming die and prefabricated part processing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200911 Termination date: 20210717 |