CN210216096U - Town road curb dismantling equipment with noise reduction effect - Google Patents

Town road curb dismantling equipment with noise reduction effect Download PDF

Info

Publication number
CN210216096U
CN210216096U CN201920492549.5U CN201920492549U CN210216096U CN 210216096 U CN210216096 U CN 210216096U CN 201920492549 U CN201920492549 U CN 201920492549U CN 210216096 U CN210216096 U CN 210216096U
Authority
CN
China
Prior art keywords
vibration
curb
fixed plate
noise reduction
frame
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.)
Withdrawn - After Issue
Application number
CN201920492549.5U
Other languages
Chinese (zh)
Inventor
Chunyan Hua
华春燕
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Runlin Construction Engineering Co Ltd
Original Assignee
Shenzhen Runlin Construction Engineering Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shenzhen Runlin Construction Engineering Co Ltd filed Critical Shenzhen Runlin Construction Engineering Co Ltd
Priority to CN201920492549.5U priority Critical patent/CN210216096U/en
Application granted granted Critical
Publication of CN210216096U publication Critical patent/CN210216096U/en
Withdrawn - After Issue legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Road Repair (AREA)

Abstract

The utility model relates to a town road equipment field specifically relates to a town road curb demolishs equipment that possesses noise reduction effect, including elevating gear, vibrating device and clamping device, elevating gear includes hydraulic rod, and vibrating device is fixed to be set up on hydraulic rod's output, and vibrating device includes vibration frame and vibrating motor, and vibrating motor is provided with two, is provided with the eccentric block on vibrating motor's the output, and clamping device includes driving plate, centre gripping cylinder and grip block. Aim at the curb with equipment, start hydraulic push rod, make two centre gripping cylinders be located the curb both sides respectively, start centre gripping cylinder and promote the grip block and press from both sides tight curb, start vibrating motor, drive the vibration frame and do the linear type vibration, the vibration post back and forth movement on the dead lever, the vibration frame drives the driving plate vibration of making a round trip of below for the centre gripping cylinder presss from both sides the curb and produces the vibration, the curb is not hard up until breaking away from with soil, hydraulic push rod extracts it from the road surface. This equipment convenient to use, the noise is low and efficient.

Description

Town road curb dismantling equipment with noise reduction effect
Technical Field
The utility model relates to a town road equipment field specifically, relates to a town road curb demolishs equipment that possesses noise reduction effect.
Background
The curbstone refers to boundary stones which are made of granite and are used at the edges of a road surface, and is also called as a curbstone or a kerbstone, a curbstone and a curbstone. The curbstone is a boundary line for distinguishing a traffic lane, a sidewalk, a green land, an isolation strip and other parts of a road on the road surface, is paved on the edge of the road, and plays a role in guaranteeing the traffic safety of pedestrians and vehicles and ensuring the tidiness of the edge of the road surface.
The structural dimensions of the curbstone are typically 99cm by 15 cm. Typically 10cm above the road surface. The curbstone is a markstone arranged between a road surface and other structures, namely the markstone arranged at the boundary of the edge of the road surface and other components of the cross section. Kerbstones are generally arranged between the separation belts and the road surface and between the sidewalks and the road surface, and curbs are arranged in the traffic islands and the safety islands. The form of the device is vertical, inclined, flat and the like.
The application range of the curbstone is very wide, and the construction amount of various infrastructures such as landscaping, road construction, real estate projects and old city reconstruction is huge. In urban road construction, curbstone plays an important role, when an old road needs to be maintained or rebuilt, the old and useless curbstone is often required to be dismantled, the traditional dismantling means is manual excavation or manual breaking pickaxe is held to loosen the curbstone drill, and then manual or machine transportation is carried, but meanwhile, the method brings many problems, such as wasting manpower, inconvenient operation, and also can generate larger dust and cause air pollution to a certain extent, in addition, the traditional equipment can generate great noise pollution, great interference is caused to the lodging or travelling of nearby residents, and much inconvenience is generated.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art, the utility model provides a municipal road curb demolishs equipment that possesses noise reduction effect.
The utility model discloses a municipal road curbstone dismantling equipment with noise reduction effect, which comprises a lifting device, a vibration device and a clamping device, wherein the lifting device comprises a hydraulic push rod, the output end of the hydraulic push rod is arranged downwards, the vibration device is fixedly arranged on the output end of the hydraulic push rod, the vibration device comprises a vibration frame and a vibration motor, a mounting table is arranged in the middle of the vibration frame, the vibration motor is fixed on the mounting table, two vibration motors are arranged, an eccentric block is arranged on the output end of the vibration motor, the axle center of the eccentric block is connected with the output shaft of the vibration motor, the clamping device comprises a transmission plate, a clamping cylinder and a clamping block, the transmission plate is fixedly connected at the bottom of the vibration frame, the clamping cylinder is fixedly arranged below the transmission plate, and the clamping cylinder is provided with a pair, the output ends of the clamping cylinders are oppositely arranged, and the clamping block is fixedly connected to the output ends of the clamping cylinders.
Further, vibrating device is still including unable adjustment base, unable adjustment base sets up on hydraulic push rod's output, the last fixed plate that is provided with of unable adjustment base, the fixed plate downwardly extending sets up and is equipped with a pair ofly, the vibration frame sets up between a pair of fixed plate, unable adjustment base directly is equipped with certain distance with the vibration frame.
Furthermore, the fixed plate is provided with a vibration column, the vibration column penetrates through the fixed plate to be connected with the outer side of the vibration frame, and each fixed plate is at least provided with two vibration columns.
Further, fixed plate and vibration post junction are provided with linear bearing, linear bearing is fixed to be set up on the fixed plate, the vibration post passes from linear bearing, the cover is equipped with vibration buffer spring on the vibration post, buffer spring sets up between fixed plate and vibration frame, one of vibration frame is kept away from to the vibration post serves and is provided with the stopper.
Further, the upper and lower surface of mount table all is provided with the support column, the support column extends and is connected with the vibration frame is inboard, the support column overcoat is equipped with supporting spring, the support column is provided with two at least.
Furthermore, a reinforcing rib is arranged at the joint of the transmission plate and the vibration frame.
Furthermore, the clamping block is provided with soil loosening teeth, the soil loosening teeth and the clamping block are integrally formed, the soil loosening teeth are located at the bottom of the clamping block, and the soil loosening teeth are arranged in a row by a plurality of sharp tooth-shaped structures.
Has the advantages that: the device fixes the curbs through the clamping device, then the curbs are vibrated by the vibration motor to be separated from surrounding soil, and the strong resistance type vibration is realized by arranging the eccentric block, so that the stable amplitude is ensured, the machine body has light weight and small volume, is convenient to mount and move, and is simple to operate; the mechanical noise is low, and excessive noise pollution can not be generated to interfere with nearby residents; due to the lifting action of the hydraulic push rod, manual carrying is omitted, labor is saved, and efficiency is improved; in addition, the spring that sets up plays the effect of buffering protection, has guaranteed the stability of equipment use and has prolonged life.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic perspective view of the present invention;
FIG. 2 is a front view of the present invention;
fig. 3 is a schematic partial-split view of the present invention;
fig. 4 is a schematic diagram of the partial detachment of the present invention;
fig. 5 is a side view of the vibration motor;
FIG. 6 is a cross-sectional view taken along line A-A of FIG. 5;
FIG. 7 is a schematic structural view of the clamping device;
description of reference numerals: lifting device 1, hydraulic push rod 1a, vibrating device 2, vibration frame 2a, vibrating motor 2b, eccentric block 2b1, mount table 2c, support column 2d, supporting spring 2e, unable adjustment base 2f, fixed plate 2g, vibration column 2h, linear bearing 2i, vibration buffer spring 2j, stopper 2k, clamping device 3, driving plate 3a, strengthening rib 3a1, centre gripping cylinder 3b, grip block 3c, tooth 3c1 that loosens the soil, target curb 4.
Detailed Description
In the following description, numerous implementation details are set forth in order to provide a more thorough understanding of the present invention. It should be understood, however, that these implementation details should not be used to limit the invention. That is, in some embodiments of the invention, details of these implementations are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for description purposes, not specifically referring to the order or sequence, and are not intended to limit the present invention, but only to distinguish the components or operations described in the same technical terms, and are not to be construed as indicating or implying any relative importance or implicit indication of the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1 to 7, the municipal road curb dismantling device with noise reduction effect comprises a lifting device 1, a vibration device 2 and a clamping device 3, wherein the lifting device 1 comprises a hydraulic push rod 1a, the output end of the hydraulic push rod 1a is arranged downwards, the vibration device 2 is fixedly arranged at the output end of the hydraulic push rod 1a, the vibration device 2 comprises a vibration frame 2a and a vibration motor 2b, a mounting table 2c is arranged in the middle of the vibration frame 2a, the vibration motor 2b is fixed on the mounting table 2c, the vibration motor 2b is provided with two, an eccentric block 2b1 is arranged at the output end of the vibration motor 2b, the axis of the eccentric block 2b1 is connected with the output shaft of the vibration motor 2b, the clamping device 3 comprises a transmission plate 3a, a clamping cylinder 3b and a clamping block 3c, the transmission plate 3a is fixedly connected to the bottom of the vibration frame 2a, the clamping cylinder 3b is fixedly arranged below the transmission plate 3a, the clamping cylinder 3b is provided with a pair of output ends, the output ends of the clamping cylinder 3b are oppositely arranged, and the clamping block 3c is fixedly connected to the output end of the clamping cylinder 3 b. The equipment is used for dismantling waste road teeth of urban roads, the equipment is installed on a loading truck, the equipment is moved to a designated area, the equipment is aligned to a target road tooth 4, a hydraulic push rod 1a of a lifting device 1 is started, a vibration device 2 and a clamping device 3 are driven to descend, two clamping cylinders 3b are respectively positioned at two sides of the target road tooth 4, the clamping cylinders 3b are started to push a clamping block 3c to approach to the middle, the target road tooth 4 is clamped, then vibration motors 2b are started, the two vibration motors 2b are of the same type, rotating shafts of the vibration motors are in parallel positions, when in operation, the two vibration motors 2b are opposite in rotation direction, the two vibration motors 2b are in synchronous operation, the vibration motors 2b drive eccentric blocks 2b1 to rotate, and further drive a vibration frame 2a to do linear vibration, so that the vibration frame 2a transversely vibrates back and forth on two fixing plates 2g, at this moment, vibrating column 2h is the back and forth movement on the dead lever, and vibration frame 2a further drives the driving plate 3a of below and makes a round trip to vibrate, and then makes centre gripping cylinder 3b press from both sides target curb 4 and produce the vibration, and along with the machine operation, target curb 4 takes place to become flexible with soil on every side, until breaking away from, and hydraulic push rod 1a extracts it from the road surface afterwards, rises and transports in the truck.
Vibrating device 2 is still including unable adjustment base 2f, unable adjustment base 2f sets up on hydraulic push rod 1 a's output, be provided with fixed plate 2g on unable adjustment base 2f, fixed plate 2g downwardly extending sets up and is equipped with a pair ofly, vibration frame 2a sets up between a pair of fixed plate 2g, unable adjustment base 2f directly is equipped with certain distance with vibration frame 2 a. The fixed base 2f and the fixed plate 2g play a role in installation.
Be provided with vibration post 2h on fixed plate 2g, vibration post 2h passes fixed plate 2g and is connected with the vibration frame 2a outside, is provided with two vibration posts 2h on every fixed plate 2g at least. The vibration column 2h fixes the vibration frame 2a between the two fixing plates 2g so as to linearly reciprocate on a specific track.
Fixed plate 2g and vibration post 2h junction are provided with linear bearing 2i, linear bearing 2i is fixed to be set up on fixed plate 2g, vibration post 2h passes from linear bearing 2i, the cover is equipped with vibration buffer spring 2j on the vibration post 2h, buffer spring sets up between fixed plate 2g and vibration frame 2a, one of vibration frame 2a is kept away from to vibration post 2h serves and is provided with stopper 2 k. Because vibrating motor 2 b's function, vibrating machinery's organism is vibration frame 2a promptly and can bear great power, so be provided with vibration buffer spring 2j and unload the power buffering, play the effect of protection, guaranteed the safety and the stability of equipment, can also prolong the life of equipment, linear bearing 2i makes vibration post 2h be linear motion on fixed plate 2g, stopper 2k plays limiting displacement, guarantee that vibration post 2h can not take place the obscission.
The upper and lower surface of mount table 2c all is provided with support column 2d, support column 2d extends and is connected with vibration frame 2a inboard, support column 2d overcoat is equipped with supporting spring 2e, support column 2d is provided with two at least. The supporting columns 2d reinforce the main body of the vibration frame 2a, and the supporting springs 2e also play a role in buffering and protecting when the vibration motor 2b works, so that the vibration frame 2a is prevented from bearing too large pressure.
The joint of the transmission plate 3a and the vibration frame 2a is provided with a reinforcing rib 3a 1. The reinforcing ribs 3a1 make the connection between the vibration frame 2a and the transmission plate 3a more firm.
Ripping teeth 3c1 are arranged on the clamping block 3c, ripping teeth 3c1 and clamping block 3c are integrally formed, ripping teeth 3c1 are located at the bottom of clamping block 3c, and ripping teeth 3c1 are a plurality of sharp tooth-shaped structures arranged in a row. The arrangement of the ripping teeth 3c1 is convenient for the clamping block 3c to be inserted into the ground, which is helpful for loosening earth and stones around the target curbstone 4 and improving the dismantling efficiency.
The working principle is as follows: the equipment is used for dismantling waste road teeth of urban roads, the equipment is installed on a loading truck, the equipment is moved to a specified area, the equipment is aligned to a target road tooth 4, a hydraulic push rod 1a of a lifting device 1 is started, a vibration device 2 and a clamping device 3 are driven to descend, two clamping cylinders 3b are respectively positioned at two sides of the target road tooth 4, the clamping cylinders 3b are started to push a clamping block 3c to approach to the middle, the target road tooth 4 is clamped, then a vibration motor 2b is started, the two vibration motors 2b are of the same type, rotating shafts of the two vibration motors are in parallel positions, when the equipment is operated, the rotating directions of the two vibration motors 2b are opposite, the two vibration motors 2b are in a synchronous state, the vibration motor 2b drives an eccentric block 2b1 to rotate, and further drives a vibration frame 2a to do linear vibration, so that the vibration frame 2a transversely vibrates back and forth on two fixing plates 2g, at this moment, vibrating column 2h is the back and forth movement on the dead lever, and vibration frame 2a further drives the driving plate 3a of below and makes a round trip to vibrate, and then makes centre gripping cylinder 3b press from both sides target curb 4 and produce the vibration, and along with the machine operation, target curb 4 takes place to become flexible with soil on every side, until breaking away from, and hydraulic push rod 1a extracts it from the road surface afterwards, rises and transports in the truck.
The fixing base 2f and the fixing plate 2g play a role of mounting. The vibration column 2h fixes the vibration frame 2a between the two fixing plates 2g so as to linearly reciprocate on a specific track. Because vibrating motor 2 b's function, vibrating machinery's organism is vibration frame 2a promptly and can bear great power, so be provided with vibration buffer spring 2j and unload the power buffering, play the effect of protection, guaranteed the safety and the stability of equipment, can also prolong the life of equipment, linear bearing 2i makes vibration post 2h be linear motion on fixed plate 2g, stopper 2k plays limiting displacement, guarantee that vibration post 2h can not take place the obscission. The supporting columns 2d reinforce the main body of the vibration frame 2a, and the supporting springs 2e also play a role in buffering and protecting when the vibration motor 2b works, so that the vibration frame 2a is prevented from bearing too large pressure. The reinforcing ribs 3a1 make the connection between the vibration frame 2a and the transmission plate 3a more firm. The arrangement of the ripping teeth 3c1 is convenient for the clamping block 3c to be inserted into the ground, which is helpful for loosening earth and stones around the target curbstone 4 and improving the dismantling efficiency.
The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims (7)

1. The utility model provides a municipal road curb that possesses noise reduction demolishs equipment which characterized in that: comprises a lifting device (1), a vibration device (2) and a clamping device (3), wherein the lifting device (1) comprises a hydraulic push rod (1 a), the output end of the hydraulic push rod (1 a) is arranged downwards, the vibration device (2) is fixedly arranged at the output end of the hydraulic push rod (1 a), the vibration device (2) comprises a vibration frame (2 a) and a vibration motor (2 b), an installation table (2 c) is arranged in the middle of the vibration frame (2 a), the vibration motor (2 b) is fixed on the installation table (2 c), the vibration motor (2 b) is provided with two vibration blocks (2 b 1), the output end of the vibration motor (2 b) is provided with an eccentric block (2 b 1), the axle center of the eccentric block (2 b 1) is connected with the output shaft of the vibration motor (2 b), the clamping device (3) comprises a transmission plate (3 a), a clamping cylinder (3 b) and a clamping block (3 c), driving plate (3 a) fixed connection is in the bottom of vibration frame (2 a), centre gripping cylinder (3 b) is fixed to be set up in the below of driving plate (3 a), centre gripping cylinder (3 b) are provided with a pair ofly, and is a pair of the output of centre gripping cylinder (3 b) sets up relatively, grip block (3 c) fixed connection is on the output of centre gripping cylinder (3 b).
2. The municipal road curb dismantling device with noise reduction effect according to claim 1, wherein: vibrating device (2) is still including unable adjustment base (2 f), unable adjustment base (2 f) set up on the output of hydraulic push rod (1 a), be provided with fixed plate (2 g) on unable adjustment base (2 f), fixed plate (2 g) downwardly extending sets up and is equipped with a pair ofly, vibration frame (2 a) set up between a pair of fixed plate (2 g), unable adjustment base (2 f) directly are equipped with certain distance with vibration frame (2 a).
3. The municipal road curb dismantling device with noise reduction effect according to claim 2, wherein: be provided with vibration post (2 h) on fixed plate (2 g), vibration post (2 h) pass fixed plate (2 g) and are connected with vibration frame (2 a) outside, are provided with two vibration posts (2 h) on every fixed plate (2 g) at least.
4. The municipal road curb dismantling device with noise reduction effect according to claim 3, wherein: fixed plate (2 g) and vibration post (2 h) junction are provided with linear bearing (2 i), linear bearing (2 i) are fixed to be set up on fixed plate (2 g), pass in vibration post (2 h) follow linear bearing (2 i), the cover is equipped with vibration buffer spring (2 j) on vibration post (2 h), buffer spring sets up between fixed plate (2 g) and vibration frame (2 a), vibration post (2 h) are kept away from one of vibration frame (2 a) and are served and be provided with stopper (2 k).
5. The municipal road curb dismantling device with noise reduction effect according to claim 4, wherein: the upper and lower surface of mount table (2 c) all is provided with support column (2 d), support column (2 d) extend and are connected with vibration frame (2 a) inboard, support column (2 d) overcoat is equipped with supporting spring (2 e), support column (2 d) are provided with two at least.
6. The municipal road curb dismantling device with noise reduction effect according to claim 5, wherein: and reinforcing ribs (3 a 1) are arranged at the joint of the transmission plate (3 a) and the vibration frame (2 a).
7. The apparatus for removing the noise-reducing municipal road curb as claimed in claim 6, wherein: the clamping block (3 c) is provided with soil loosening teeth (3 c 1), the soil loosening teeth (3 c 1) and the clamping block (3 c) are integrally formed, the soil loosening teeth (3 c 1) are located at the bottom of the clamping block (3 c), and the soil loosening teeth (3 c 1) are arranged in a row in a mode of a plurality of sharp tooth-shaped structures.
CN201920492549.5U 2019-04-12 2019-04-12 Town road curb dismantling equipment with noise reduction effect Withdrawn - After Issue CN210216096U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920492549.5U CN210216096U (en) 2019-04-12 2019-04-12 Town road curb dismantling equipment with noise reduction effect

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920492549.5U CN210216096U (en) 2019-04-12 2019-04-12 Town road curb dismantling equipment with noise reduction effect

Publications (1)

Publication Number Publication Date
CN210216096U true CN210216096U (en) 2020-03-31

Family

ID=69923404

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201920492549.5U Withdrawn - After Issue CN210216096U (en) 2019-04-12 2019-04-12 Town road curb dismantling equipment with noise reduction effect

Country Status (1)

Country Link
CN (1) CN210216096U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112523056A (en) * 2020-12-31 2021-03-19 湖北亿涛建设有限公司 Municipal administration greenbelt reforms transform and demolishs equipment with curbstone

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112523056A (en) * 2020-12-31 2021-03-19 湖北亿涛建设有限公司 Municipal administration greenbelt reforms transform and demolishs equipment with curbstone
CN112523056B (en) * 2020-12-31 2022-04-26 亿涛建设集团有限公司 Municipal administration greenbelt reforms transform and demolishs equipment with curbstone

Similar Documents

Publication Publication Date Title
CN210216096U (en) Town road curb dismantling equipment with noise reduction effect
CN107254892A (en) A kind of low noise scraper land leveller
CN108560374B (en) Working method of muddy soil pavement leveling device for highway construction
CN108729329B (en) Pushing and paving device for cement ground construction
CN214089350U (en) Concrete vibrating device for municipal highway engineering
CN201141114Y (en) Miniature pedrail type pavement planning mill
CN210712460U (en) Road leveling device
CN218969689U (en) Sand stone screening road roller for road construction
CN107794827B (en) Rotatable rammer compactor is used in road surface construction
CN211815391U (en) Highway is highway tamping unit for highway engineering
CN216238002U (en) Municipal reinforced concrete road pavement construction machinery capable of being paved mechanically
CN217378473U (en) Road surface rolling press device is used in traffic road bridge construction
CN216338875U (en) Road surface leveling device for highway construction
CN214993724U (en) A bulldoze rammer soil device for afforestation construction
CN211713602U (en) Town road construction is with device of levelling that shakes
CN216074622U (en) Hand-held type road surface rammer compactor of road engineering
CN217601152U (en) Instrument is used in construction of highway and town road curb
CN217203492U (en) Flat plate tamper for asphalt pavement
CN215164410U (en) Leveling device is used in bituminous paving construction
CN220318314U (en) Municipal administration road surface cement stabilized macadam basic unit level and smooth device
CN215518249U (en) Town road construction is shaken paper-back edition and is put
CN217127927U (en) Concrete vibrating device for municipal construction road surface leveling
CN218404963U (en) Rubber roller vibrating tamper for sidewalk construction
CN215104700U (en) Asphalt compaction device for road and bridge construction
CN215561676U (en) Road surface leveling equipment for road construction

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
AV01 Patent right actively abandoned
AV01 Patent right actively abandoned
AV01 Patent right actively abandoned

Granted publication date: 20200331

Effective date of abandoning: 20201222

AV01 Patent right actively abandoned

Granted publication date: 20200331

Effective date of abandoning: 20201222