CN211028001U - Plain bumper - Google Patents
Plain bumper Download PDFInfo
- Publication number
- CN211028001U CN211028001U CN201922056996.9U CN201922056996U CN211028001U CN 211028001 U CN211028001 U CN 211028001U CN 201922056996 U CN201922056996 U CN 201922056996U CN 211028001 U CN211028001 U CN 211028001U
- Authority
- CN
- China
- Prior art keywords
- bevel gear
- sliding block
- motor
- screw rod
- parallel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Handcart (AREA)
Abstract
The utility model relates to a casting field discloses a plain bumper, and its technical essential is: the utility model provides a plain bumper, which comprises a table top plate, a pedestal, foundation pillar and spring, the deck plate bottom is equipped with vibrating motor, it is provided with U type groove to lie in the deck plate outside on the base, the connecting portion middle part in U type groove is provided with the biax motor, the output coaxial coupling of biax motor has the pivot, the coaxial first initiative bevel gear that is provided with of tip that the biax motor was kept away from in the pivot, two inside equal rotations in parallel portion in U type groove are connected with first lead screw, the tip that first lead screw is close to connecting portion is provided with first driven bevel gear, the cover is equipped with first slider on the first lead screw, be equipped with elevating gear on the first slider, elevating gear is last to be provided with blevile of push towards the deck plate. The utility model discloses a plain bumper can replace the manual work to go up the plain bumper and go up the unloading, reduces workman's intensity of labour, and the convenience of customers goes up the unloading.
Description
Technical Field
The utility model belongs to the technical field of the cast technique and specifically relates to a plain bumper is related to.
Background
The jolt ramming table is a dry sand jolt ramming device commonly used in casting technology, and the during operation is placed the sand box on the jolt ramming table, and the vibration through vibrating motor makes loose dry sand jolt ramming, and current jolt ramming table is when the vibration range that vibrating motor provided is great, and the sand box is placed on the vibration platform unstably, and the position of sand box removes easily, if reduce vibrating motor's amplitude moreover, can not reach the vibration requirement again, consequently need set up the stability of positioner reinforcing sand box on the jolt ramming table. Because the size of the sand box is different, when the positioning device is installed on the plain bumper, if the positioning device which is not adjustable is installed, the sand box with the uniform size can only be arranged on the plain bumper, and if the positioning device which is adjustable is installed, the structure of the positioning device is complex, the adjustment is inconvenient, and the installation on the plain bumper is inconvenient.
In order to solve the above problems, the chinese patent publication No. CN207138779U discloses a tapping platform for casting and molding, which has the technical points that: the sand box is placed above the table board, a plurality of grooves are formed in the table board, vacuum chucks are installed in the grooves, vacuum tubes are arranged at the bottoms of the vacuum chucks, channels for containing the vacuum tubes are formed in the table board, and the vacuum tubes are connected with a vacuum pump; the bottom of the sand box is provided with an integrally arranged bottom plate, a plurality of bosses embedded into the grooves are arranged below the bottom plate, and the top surfaces of the bosses are smooth planes. The utility model has the advantages that the groove and the matched boss are arranged on the table top plate of the plain bumper and the bottom plate of the sand box, so that the sand box and the plain bumper are combined into a whole, the position of the sand box is stable, and the vacuum chuck is arranged at the bottom of the groove to tightly suck the boss, thereby enhancing the stability of the sand box; because the sand box passes through boss and recess combination with the plain bumper, need not adjust through positioner, simple structure, the size of sand box is unrestricted, the utility model discloses can be applicable to the sand box of various sizes.
This scheme has solved plain bumper location difficulty, has adjusted inconvenient problem, but on current plain bumper needed the manual work to carry the deck plate with the sand box when using, manual handling working strength was big when the sand box was great, and inconvenient user goes up the unloading.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims at providing a plain bumper, this plain bumper can be unloading automatically at the during operation, reduces workman's working strength, and convenience of customers uses.
The above technical purpose of the present invention can be achieved by the following technical solutions: a compaction table comprises a table top plate, a base column and a spring, wherein a vibration motor is arranged at the bottom of the table top plate, a U-shaped groove is formed in the outer side of the table top plate on the base, a double-shaft motor is arranged in the middle of a connecting part of the U-shaped groove, the output end of the double-shaft motor is coaxially connected with a rotating shaft, a first driving bevel gear is coaxially arranged at the end part of the rotating shaft far away from the double-shaft motor, first lead screws are rotatably connected in two parallel parts of the U-shaped groove, a first driven bevel gear meshed with the first driving bevel gear is arranged at the end part of the first lead screw close to the connecting part, a first sliding block sliding along the parallel parts is sleeved on the first lead screws, a lifting device is arranged on the first sliding block, a material pushing device is arranged on the lifting device and faces the, and a hydraulic lifting platform is arranged in the accommodating groove.
By adopting the technical scheme, when a user uses the compaction platform, firstly, the sandbox to be compacted is placed on the hydraulic lifting platform, and the hydraulic lifting platform is started to enable the top end of the hydraulic lifting platform to be flush with the top surface of the platform panel; then starting a double-shaft motor to enable an output shaft of the double-shaft motor to rotate to drive a rotating shaft coaxial with the double-shaft motor to rotate, wherein the rotating shaft rotates to drive a first driving bevel gear coaxial with the rotating shaft to rotate, the first driving bevel gear drives a first screw rod to rotate through a first driven bevel gear meshed with the first driving bevel gear, and further drives a first sliding block to move along the direction of the first screw rod, and meanwhile, the height of a material pushing device is adjusted through a lifting device, so that the material pushing device can push a sandbox to move in the sliding process of the first sliding block, the sandbox is pushed to the center of a deck plate from a hydraulic lifting platform, and a vibration; finally, the sandbox is pushed to the hydraulic lifting platform from the platform panel through the material pushing device again, and the hydraulic lifting platform is started to enable the top end of the hydraulic lifting platform to be parallel to the top surface of the base; in conclusion, the device replaces the manual work to go up unloading to the plain bumper, reduces workman's the amount of labour, and convenience of customers uses.
The utility model discloses further set up to: the lifting device comprises a second screw rod which is vertically and rotatably connected to a first sliding block, the top of the first sliding block is located on one side of the second screw rod and is provided with a motor, the end part of an output shaft of the motor is coaxially connected with a second driving bevel gear, the bottom end of the second screw rod is coaxially provided with a second driven bevel gear meshed with the second driving bevel gear, a guide rod is vertically arranged on one side of the second screw rod and is located on the first sliding block, a second sliding block which slides along the direction of the guide rod is arranged on the second screw rod, and an adjusting sleeve is sleeved on the top of the second sliding block and outside the second screw rod.
By adopting the technical scheme, when a user uses the lifting device, the motor is started to enable the output shaft of the motor to rotate to drive the second driving bevel gear coaxial with the lifting device to rotate, the second driving bevel gear drives the second screw rod to rotate through the second driven bevel gear meshed with the second driving bevel gear, the second screw rod rotates to drive the second sliding block to drive the adjusting sleeve at the top of the second sliding block to move on the second screw rod along the direction of the guide rod, and the height of the material pushing device connected to the adjusting sleeve is adjusted.
The utility model discloses further set up to: the material pushing device comprises connecting plates which are positioned on the opposite side walls of the two adjusting sleeves and are parallel to the adjusting sleeves, and two rows of connecting frames which are parallel to each other are arranged between the two connecting plates and are parallel to the table panel.
Through adopting above-mentioned technical scheme, the setting of connecting plate is for conveniently installing the link, realizes pushing away the material through the link, simple structure, convenient to use.
The utility model discloses further set up to: and a reinforcing rod is arranged between the two connecting frames.
Through adopting above-mentioned technical scheme, the stiffener plays the supporting role, makes the link more firm, prolongs blevile of push's life.
The utility model discloses further set up to: and two mounting plates are arranged below the connecting plates and positioned below the connecting frame, and cleaning brushes are arranged at the bottoms of the mounting plates.
Through adopting above-mentioned technical scheme, make brush bottom and deck plate top surface contact through adjusting elevating gear, the sand grain that first slider motion drove the brush motion and drop on the deck plate through adjusting elevating gear cleans totally, and convenience of customers uses.
The utility model discloses further set up to: the mounting panel bottom is provided with the mounting groove, the mounting panel is located the mounting groove lateral wall is provided with a plurality of bolts perpendicularly, bolt tip butt is in clean on the brush.
Through adopting above-mentioned technical scheme, the brush cleaner is connected on the mounting panel through the bolt is dismantled, and the user changes the convenience, and convenience of customers uses.
The utility model discloses further set up to: the bolt tip is provided with star type plastic lag.
Through adopting above-mentioned technical scheme, star type plastic protection cover convenience of customers rotates the bolt, and convenience of customers uses.
The utility model discloses further set up to: and a plurality of conveying rollers which are parallel to each other are rotatably arranged on one side of the base, which is positioned on the accommodating groove and is far away from the table panel.
Through adopting above-mentioned technical scheme, the user passes through the transfer roller and conveys the sandbox hydraulic lifting platform on, reduces staff's the amount of labour, and convenience of customers uses.
To sum up, the utility model discloses a beneficial technological effect does:
1. when a user uses the compaction table, firstly, a sandbox to be compacted is placed on the hydraulic lifting table, and the hydraulic lifting table is started to enable the top end of the sandbox to be flush with the top surface of the table panel; then starting a double-shaft motor to enable an output shaft of the double-shaft motor to rotate to drive a rotating shaft coaxial with the double-shaft motor to rotate, wherein the rotating shaft rotates to drive a first driving bevel gear coaxial with the rotating shaft to rotate, the first driving bevel gear drives a first screw rod to rotate through a first driven bevel gear meshed with the first driving bevel gear, and further drives a first sliding block to move along the direction of the first screw rod, and meanwhile, the height of a material pushing device is adjusted through a lifting device, so that the material pushing device can push a sandbox to move in the sliding process of the first sliding block, the sandbox is pushed to the center of a deck plate from a hydraulic lifting platform, and a vibration; finally, the sandbox is pushed to the hydraulic lifting platform from the platform panel through the material pushing device again, and the hydraulic lifting platform is started to enable the top end of the hydraulic lifting platform to be parallel to the top surface of the base; in conclusion, the device replaces the manual work to go up unloading to the plain bumper, reduces workman's the amount of labour, and convenience of customers uses.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is an overall sectional view of the present invention;
FIG. 3 is a schematic view of a part of the structure of the present invention;
fig. 4 is an enlarged schematic view of a portion a in fig. 3.
In the figure, 1, a table panel; 2. a base; 21. a containing groove; 22. a hydraulic lifting platform; 23. a conveying roller; 3. a base pillar; 4. a spring; 5. a vibration motor; 6. a U-shaped groove; 61. a connecting portion; 611. a double-shaft motor; 612. a rotating shaft; 613. a first drive bevel gear; 62. a parallel portion; 621. a first lead screw; 622. a first driven bevel gear; 623. a first slider; 7. a lifting device; 71. a second lead screw; 72. a guide bar; 73. a second slider; 74. an adjustment sleeve; 75. a motor; 76. a second drive bevel gear; 77. a second driven bevel gear; 8. a material pushing device; 81. a connecting plate; 82. a connecting frame; 83. a reinforcing bar; 84. mounting a plate; 85. cleaning with a brush; 86. mounting grooves; 87. and (4) bolts.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 and 2, a tapping table disclosed by the present invention comprises a table top plate 1, a base 2, a pillar 3 and a spring 4, wherein a vibration motor 5 is disposed at the bottom of the table top plate 1, a U-shaped groove 6 is disposed on the base 2 and located at the outer side of the table top plate 1, a double-shaft motor 611 is disposed at the middle of a connecting portion 61 of the U-shaped groove 6, an output end of the double-shaft motor 611 is coaxially connected with a rotating shaft 612, a first driving bevel gear 613 is coaxially disposed at an end portion of the rotating shaft 612 away from the double-shaft motor 611, a first lead screw 621 is rotatably connected inside two parallel portions 62 of the U-shaped groove 6, a first driven bevel gear 622 meshed with the first driving bevel gear 613 is disposed at an end portion of the first lead screw 621 close to the connecting portion 61, a first slider 623 sliding along the parallel portion 62 is sleeved on the first lead screw 621, a lifting device 7 is, one side of the base 2 close to the table panel 1 is provided with a containing groove 21, a hydraulic lifting platform 22 is arranged in the containing groove 21, and one side of the base 2, which is far away from the table panel 1, located in the containing groove 21 is provided with a plurality of conveying rollers 23 which are parallel to each other in a rotating manner. When a user uses the compaction table, firstly, the sandbox to be compacted is transmitted to the hydraulic lifting table 22 through the transmission roller 23, and the hydraulic lifting table 22 is started to enable the top end of the hydraulic lifting table to be flush with the top surface of the table panel 1; then, the double-shaft motor 611 is started to enable the output shaft of the double-shaft motor to rotate to drive the rotating shaft 612 coaxial with the double-shaft motor to rotate, the rotating shaft 612 rotates to drive the first driving bevel gear 613 coaxial with the rotating shaft to rotate, the first driving bevel gear 613 drives the first screw rod 621 to rotate through the first driven bevel gear 622 meshed with the first driving bevel gear 613, the first sliding block 623 is driven to move along the direction of the first screw rod 621, meanwhile, the height of the material pushing device 8 is adjusted through the lifting device 7, the material pushing device 8 can push the sandbox to move in the sliding process of the first sliding block 623, the sandbox is pushed to the center of the table panel 1 from the hydraulic lifting table 22, and the vibrating motor 5 is; finally, the sandbox is pushed to the hydraulic lifting platform 22 from the table panel 1 through the material pushing device 8 again, the hydraulic lifting platform 22 is started to enable the top end of the hydraulic lifting platform to be parallel to the top surface of the base 2, and the sandbox is conveyed away through the conveying roller 23.
As shown in fig. 3, the lifting device 7 includes a second screw 71 vertically and rotatably connected to the first slider 623, a motor 75 is disposed at the top of the first slider 623 at one side of the second screw 71, a second driving bevel gear 76 is coaxially connected to an end of an output shaft of the motor 75, a second driven bevel gear 77 meshed with the second driving bevel gear 76 is coaxially disposed at the bottom of the second screw 71, a guide rod 72 is vertically disposed at one side of the second screw 71 on the first slider 623, a second slider 73 sliding along the direction of the guide rod 72 is disposed on the second screw 71, and an adjusting sleeve 74 is sleeved at the top of the second slider 73 at the outside of the second screw 71. When a user uses the lifting device 7, the motor 75 is started to rotate the output shaft of the motor to drive the second driving bevel gear 76 coaxial with the motor to rotate, the second driving bevel gear 76 drives the second screw rod 71 to rotate through the second driven bevel gear 77 meshed with the second driving bevel gear, the second screw rod 71 rotates to drive the second slider 73 to drive the adjusting sleeve 74 at the top of the second slider to move on the second screw rod 71 along the direction of the guide rod 72, and the height of the material pushing device 8 connected to the adjusting sleeve 74 is adjusted.
As shown in fig. 3 and 4, the pushing device 8 includes two connecting plates 81 disposed on opposite side walls of the two adjusting sleeves 74 and parallel to the adjusting sleeves 74, two rows of connecting frames 82 parallel to each other are disposed between the two connecting plates 81 and parallel to the table panel 1, and a reinforcing rod 83 for reinforcing the structure is disposed between the two connecting frames 82. The two connecting plates 81 are located below the connecting frame 82 and are provided with mounting plates 84, cleaning brushes 85 are arranged at the bottoms of the mounting plates 84, mounting grooves 86 are formed in the bottoms of the mounting plates 84, a plurality of bolts 87 are vertically arranged on the side walls of the mounting grooves 86, the end portions of the bolts 87 abut against the cleaning brushes 85, a user can replace the cleaning brushes 85 conveniently, and star-shaped plastic protective sleeves facilitating rotation of the bolts 87 are arranged at the end portions of the bolts 87. The bottom end of the cleaning brush 85 is contacted with the top surface of the table panel 1 by adjusting the lifting device 7, and the first sliding block 623 moves to drive the cleaning brush 85 to move by adjusting the lifting device 7 so as to clean sand particles falling on the table panel 1.
The implementation principle of the embodiment is as follows: the utility model discloses a plain bumper is when using, at first, on the sandbox that will treat the plain bumper through transfer roller 23 transmits hydraulic elevating platform 22, starts hydraulic elevating platform 22 and makes its top flush with 1 top surface of deck plate. Then, the double-shaft motor 611 is started to rotate the output shaft of the double-shaft motor to drive the rotating shaft 612 coaxial with the double-shaft motor to rotate, the rotating shaft 612 rotates to drive the first driving bevel gear 613 coaxial with the rotating shaft to rotate, the first driving bevel gear 613 drives the first lead screw 621 to rotate through the first driven bevel gear 622 meshed with the first driving bevel gear 613, the first sliding block 623 is driven to move along the direction of the first lead screw 621, meanwhile, the height of the material pushing device 8 is adjusted through the lifting device 7, the material pushing device 8 can push the sandbox to move in the sliding process of the first sliding block 623, the sandbox is pushed to the center of the table panel 1 from the hydraulic lifting table 22, and the vibrating motor 5 is started to complete. Finally, the sandbox is pushed to the hydraulic lifting platform 22 from the table panel 1 through the pushing device 8 again, the hydraulic lifting platform 22 is started to enable the top end of the hydraulic lifting platform to be parallel to the top surface of the base 2, and the sandbox is conveyed away through the conveying roller 23.
After the use of the compaction table is finished, the bottom end of the cleaning brush 85 is in contact with the top surface of the table panel 1 by adjusting the lifting device 7, and the first sliding block 623 moves to drive the cleaning brush 85 to move by adjusting the lifting device 7 so as to clean sand grains falling from the table panel 1.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (8)
1. The utility model provides a plain bumper, includes deck plate (1), base (2), pillar (3) and spring (4), deck plate (1) bottom is provided with vibrating motor (5), its characterized in that: a U-shaped groove (6) is formed in the base (2) and located on the outer side of the table panel (1), a double-shaft motor (611) is arranged in the middle of a connecting portion (61) of the U-shaped groove (6), a rotating shaft (612) is coaxially connected to an output end of the double-shaft motor (611), a first driving bevel gear (613) is coaxially arranged at an end portion, away from the double-shaft motor (611), of the rotating shaft (612), first lead screws (621) are rotatably connected to the inner portions of two parallel portions (62) of the U-shaped groove (6), a first driven bevel gear (622) meshed with the first driving bevel gear (613) is arranged at an end portion, close to the connecting portion (61), of each first lead screw (621), a first sliding block (623) sliding along the parallel portions (62) is sleeved on each first lead screw (621), a lifting device (7) is arranged on each first sliding block (623), a material pushing device (8) is arranged on each lifting device (, a containing groove (21) is formed in one side, close to the table top plate (1), of the base (2), and a hydraulic lifting table (22) is arranged in the containing groove (21).
2. A tapping table as in claim 1 wherein: the lifting device (7) comprises a second screw rod (71) vertically and rotatably connected to a first sliding block (623), a motor (75) is arranged on one side, located on the second screw rod (71), of the top of the first sliding block (623), a second driving bevel gear (76) is coaxially connected to the end portion of an output shaft of the motor (75), a second driven bevel gear (77) meshed with the second driving bevel gear (76) is coaxially arranged at the bottom end of the second screw rod (71), a guide rod (72) is vertically arranged on one side, located on the second screw rod (71), of the first sliding block (623), a second sliding block (73) sliding along the direction of the guide rod (72) is arranged on the second screw rod (71), and an adjusting sleeve (74) is sleeved on the outer portion, located on the second screw rod (71), of the top of the second sliding block (73).
3. A tapping station as in claim 2 wherein: the material pushing device (8) comprises connecting plates (81) which are positioned on the opposite side walls of the two adjusting sleeves (74) and arranged in parallel with the adjusting sleeves (74), and two rows of connecting frames (82) which are parallel to each other are arranged between the two connecting plates (81) and in parallel with the table panel (1).
4. A tapping table as in claim 3 wherein: a reinforcing rod (83) is arranged between the two connecting frames (82).
5. A tapping table as in claim 3 wherein: two the connecting plate (81) are located the link (82) below is provided with mounting panel (84), mounting panel (84) bottom is provided with brush cleaner (85).
6. A tapping table as in claim 5 wherein: the cleaning brush is characterized in that a mounting groove (86) is formed in the bottom of the mounting plate (84), the mounting plate (84) is located, a plurality of bolts (87) are vertically arranged on the side wall of the mounting groove (86), and the end portions of the bolts (87) abut against the cleaning brush (85).
7. A tapping table as in claim 6 wherein: the end part of the bolt (87) is provided with a star-shaped plastic protective sleeve.
8. A tapping table as in claim 1 wherein: and a plurality of conveying rollers (23) which are parallel to each other are rotatably arranged on one side of the base (2) which is positioned in the accommodating groove (21) and is far away from the table panel (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922056996.9U CN211028001U (en) | 2019-11-23 | 2019-11-23 | Plain bumper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922056996.9U CN211028001U (en) | 2019-11-23 | 2019-11-23 | Plain bumper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211028001U true CN211028001U (en) | 2020-07-17 |
Family
ID=71565019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922056996.9U Expired - Fee Related CN211028001U (en) | 2019-11-23 | 2019-11-23 | Plain bumper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211028001U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114112591A (en) * | 2021-11-27 | 2022-03-01 | 李硕 | Cement mortar jolt ramming system |
-
2019
- 2019-11-23 CN CN201922056996.9U patent/CN211028001U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114112591A (en) * | 2021-11-27 | 2022-03-01 | 李硕 | Cement mortar jolt ramming system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113547629B (en) | Automatic pouring device for aerated concrete building blocks | |
| CN112718380B (en) | Gypsum fragment of brick unfilled corner patching device | |
| CN211028001U (en) | Plain bumper | |
| CN210819504U (en) | Storage rack with dustproof function and capable of facilitating taking of hardware mould | |
| CN110898765A (en) | Printing ink feeding device | |
| CN215167672U (en) | Plastering device for building device | |
| CN108788013B (en) | Sand casting system with batching and sand mould finished product clearance function | |
| CN212977806U (en) | Angle-adjustable polishing device for building steel formwork | |
| CN112127246A (en) | Plastic film equipment is pasted with road to road construction | |
| CN112064467A (en) | Concrete evener of hand propelled | |
| CN217019955U (en) | Automatic lifting device for fixed-thickness roller of sanding machine | |
| CN110905208A (en) | Mud transfer device for construction | |
| CN207088218U (en) | A kind of glass substrate cutting equipment | |
| CN213386499U (en) | Green brick stacking device for brickyard | |
| CN212071538U (en) | Pipe fitting burnishing device for machine production | |
| CN110541581B (en) | Construction of building crack is with repairing car of caulking | |
| CN209832106U (en) | Production manufacturing device for concrete dropping board | |
| CN113084966A (en) | Manufacturing and processing method of foam concrete insulation board | |
| CN221157447U (en) | Coating device operated on two sides | |
| CN221092798U (en) | Multifunctional grain lifting equipment | |
| CN220197030U (en) | Feeding equipment for numerical control machine tool | |
| CN219666998U (en) | Material distribution device for wet PC brick production | |
| CN217711621U (en) | A operation rack for floor concrete placement is built in room | |
| CN218909839U (en) | Lubricating oil split charging device | |
| CN217621279U (en) | Precast slab concrete feeding machine |
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: 20200717 Termination date: 20211123 |