CN213597638U - Protector is used in road construction - Google Patents

Protector is used in road construction Download PDF

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Publication number
CN213597638U
CN213597638U CN202021813406.9U CN202021813406U CN213597638U CN 213597638 U CN213597638 U CN 213597638U CN 202021813406 U CN202021813406 U CN 202021813406U CN 213597638 U CN213597638 U CN 213597638U
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CN
China
Prior art keywords
post
protection post
protection
cooperation
fixedly connected
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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
Application number
CN202021813406.9U
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Chinese (zh)
Inventor
魏恒
王玉娟
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Ningxia Shuntong Engineering Co ltd
Original Assignee
Ningxia Shuntong 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.)
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Publication date
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Priority to CN202021813406.9U priority Critical patent/CN213597638U/en
Application granted granted Critical
Publication of CN213597638U publication Critical patent/CN213597638U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a protector is used in road construction, including first protection post, the right side of first protection post is provided with second protection post. The utility model discloses a set up first protection post, the second protection post, the carousel, the rotary rod, the gear, the warning banner, fixed establishment, the fixed block, fixed cover, positioning mechanism, the constant head tank, a pedestal, the kelly, the draw-in groove, the reflection of light pastes, the opening, the push pedal, the opening, the cooperation of riser and through-hole is used, it is not convenient for use to have solved current protection device for road construction, it encloses the fender to adopt the rail mostly, because construction range has uncertain factor, the size range is unset basically, can cause the waste on the use of resources, lead to invading a large amount of construction ranges, can not effectual protection pedestrian and vehicle's safety, on the contrary, the potential safety hazard has been increased, thereby bring inconvenient problem for the user, this protector for road construction, possess the advantage of convenient to use, be worth promoting.

Description

Protector is used in road construction
Technical Field
The utility model belongs to the technical field of road construction equipment, especially, relate to a protector is used in road construction.
Background
The road is an infrastructure for various trackless vehicles and pedestrians to pass through; the road is divided into a road, an urban road, a rural road, an industrial road, a forestry road, an examination road, a competition road, an automobile test road, a workshop passage, a school road and the like according to the use characteristics of the road.
In carrying out the work progress to the road, can have a lot of construction safety hidden dangers, need adopt protector to make job site and road keep apart to guarantee construction safety, the problem that prior art exists is: the protection device for the existing road construction is not convenient to use, most fences are arranged by fences, uncertain factors exist in the construction range, the size range is not fixed basically, waste in use resources can be caused, a large number of construction ranges can be occupied, safety of pedestrians and vehicles can not be effectively protected, potential safety hazards are increased on the contrary, and therefore inconvenience is brought to users.
SUMMERY OF THE UTILITY MODEL
Problem to prior art exists, the utility model provides a protector is used in road construction possesses convenient to use's advantage, has solved current protector is used in road construction and is not convenient for use, adopts the rail to enclose the fender mostly, because construction range has uncertain factor, the size scope is unset basically, can cause the waste on the use resource, lead to invading a large amount of construction ranges, can not effectual protection pedestrian and vehicle's safety, increased the potential safety hazard on the contrary to bring inconvenient problem for the user.
The utility model is realized in such a way, a protective device for road construction comprises a first protective column, the right side of the first protective column is provided with a second protective column, the top of the first protective column is provided with a turntable, the bottom of the turntable is fixedly connected with a rotary rod, the bottom of the rotary rod penetrates through the inner cavity of the first protective column and is sleeved with a gear, the surface of the rotary rod is wound with a warning banner matched with the second protective column for use, one side of the warning banner far away from the rotary rod penetrates through the outer side of the first protective column and is fixedly connected with the second protective column, the top of the inner cavity of the first protective column is provided with a fixing mechanism matched with the gear for use, the top of the right side of the first protective column is fixedly connected with a fixed block, the right side of the surface of the fixed block is sleeved with a fixed sleeve matched with the second protective column for use, the top of the fixed sleeve is provided with a positioning mechanism matched with the, and the top of the fixed block is provided with a positioning groove matched with the positioning mechanism for use.
As the utility model discloses it is preferred, fixed establishment includes the connecting plate, the cardboard that the left side fixedly connected with and the gear cooperation of connecting plate were used, the right side fixedly connected with gag lever post of connecting plate, the surface cover of gag lever post is equipped with the spring, the spacing groove that uses with the gag lever post cooperation is seted up at the top on first protection post inner chamber right side.
As the utility model discloses it is preferred, positioning mechanism includes the locating rack, the top swing joint of locating rack has the regulation pole, the left side swing joint who adjusts the pole rear side has the locating lever that uses with the constant head tank cooperation, the inner chamber of fixed cover and extension to the constant head tank is run through to the bottom of locating lever, adjust the extension spring that the left side fixedly connected with and the fixed cover cooperation of pole bottom used.
As the utility model discloses it is preferred, the bottom of first protection post and second protection post all is provided with the base, the equal fixedly connected with kelly in bottom of first protection post and second protection post, the draw-in groove that uses with the kelly cooperation is seted up at the top of base, the kelly is close to the inner wall contact of one side and the draw-in groove of draw-in groove inner wall, the equal fixedly connected with reflection of light subsides in front side of first protection post and second protection post.
As the utility model discloses it is preferred, the surface of rotary rod passes through bearing swing joint with the junction of first protection post, the surface of rotary rod and the inner wall fixed connection of gear, the opening of using with the cooperation of warning banner is seted up on the right side of first protection post, the bottom cover of rotary rod is equipped with the bearing frame, the bottom of bearing frame and the inner wall fixed connection of first protection post, the fixed block is close to one side of fixed cover inner wall and the inner wall contact of fixed cover, the right side and the second protection post fixed connection of fixed cover.
As the utility model discloses it is preferred, the connecting plate is the L shape, one side and the gear contact that the cardboard is close to the gear, the left side of connecting plate runs through to the outside and the fixedly connected with push pedal of first protection post, the opening that uses with the connecting plate cooperation is seted up in the left side of first protection post, the riser that uses with the push pedal cooperation of left side fixedly connected with at first protection top, the surface of gag lever post and the inner wall contact of spring.
As the utility model discloses it is preferred, the bottom and the fixed cover fixed connection of locating rack, adjust the junction of pole and locating rack and locating rod all through pivot swing joint, the through-hole that uses with the locating lever cooperation is seted up at the top of fixed cover, the locating lever is close to one side of constant head tank inner wall and the inner wall contact of constant head tank.
Compared with the prior art, the beneficial effects of the utility model are as follows:
1. the utility model discloses a set up first protection post, the second protection post, the carousel, the rotary rod, the gear, the warning banner, fixed establishment, the fixed block, fixed cover, positioning mechanism, the constant head tank, a pedestal, the kelly, the draw-in groove, the reflection of light pastes, the opening, the push pedal, the opening, the cooperation of riser and through-hole is used, it is not convenient for use to have solved current protection device for road construction, it encloses the fender to adopt the rail mostly, because construction range has uncertain factor, the size range is unset basically, can cause the waste on the use of resources, lead to invading a large amount of construction ranges, can not effectual protection pedestrian and vehicle's safety, on the contrary, the potential safety hazard has been increased, thereby bring inconvenient problem for the user, this protector for road construction, possess the advantage of convenient to use, be worth promoting.
2. The utility model discloses a set up fixed establishment, can fix the position of rotary rod through the gear, conveniently fix the position of warning banner, avoid the position of warning banner to take place the migration to influence the protecting effect.
3. The utility model discloses a set up positioning mechanism, can fix the position of first protection post and second protection post, the person of facilitating the use carries, avoids causing the warning banner to appear damaging to influence user's later stage and use.
4. The utility model discloses a set up first protection post and second protection post, can play the supporting role, through setting up the base, can fix the position of first protection post and second protection post, increase the stability of first protection post and second protection post, through setting up kelly and draw-in groove, can play limiting displacement, increase the fixed effect to first protection post and second protection post, improve the security, through setting up the reflection of light subsides, can play the warning effect at night, increase the safety protection effect.
5. The utility model discloses a set up the rotary rod, the person of facilitating the use adjusts the position of warning banner according to the scope of construction, reduce the waste of resource, reduce the scope of construction, increase the safety protection effect, through setting up bearing and bearing frame, make things convenient for the rotary rod to rotate, through setting up the gear, can play limiting displacement, the convenience is fixed the position of rotary rod, through setting up the opening, make things convenient for the warning banner to remove, through setting up the warning banner, can play warning and guard action, through setting up fixed block and fixed cover, conveniently fix first guard post and second guard post.
6. The utility model discloses a set up the connecting plate, can play the connection effect, conveniently adjust the position of cardboard, through setting up push pedal and riser, conveniently adjust the position of connecting plate, through setting up the opening, make things convenient for the connecting plate to remove, through setting up gag lever post and spacing groove, can play limiting displacement to the position of connecting plate, through setting up the spring, can play the fixed action to the connecting plate, increase the fixed effect of cardboard to the gear.
7. The utility model discloses a set up the locating rack, can play the fixed action, adjust the pole through setting up, conveniently adjust the position of locating lever, through setting up the pivot, conveniently adjust the pole and rotate, through setting up the through-hole, make things convenient for the locating lever to remove, through setting up the locating lever, can fix the position of fixed block through the constant head tank, through setting up the constant head tank, can play limiting displacement, increase the fixed effect of locating lever to the fixed block.
Drawings
Fig. 1 is a schematic structural diagram provided in an embodiment of the present invention;
fig. 2 is a front cross-sectional view of a partial structure provided by an embodiment of the present invention;
fig. 3 is a partial enlarged view of a portion a in fig. 2 according to an embodiment of the present invention.
In the figure: 1. a first protective column; 2. a second protective column; 3. a turntable; 4. rotating the rod; 5. a gear; 6. warning the banner; 7. a fixing mechanism; 701. a connecting plate; 702. clamping a plate; 703. a limiting rod; 704. a spring; 705. a limiting groove; 8. a fixed block; 9. fixing a sleeve; 10. a positioning mechanism; 1001. a positioning frame; 1002. adjusting a rod; 1003. positioning a rod; 1004. a tension spring; 11. positioning a groove; 12. a base; 13. a clamping rod; 14. a card slot; 15. reflecting light; 16. an opening; 17. pushing the plate; 18. a port; 19. a vertical plate; 20. and a through hole.
Detailed Description
In order to further understand the contents, features and effects of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings.
The structure of the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1 to 3, a protection device for road construction provided by an embodiment of the present invention comprises a first protection post 1, a second protection post 2 is disposed on the right side of the first protection post 1, a rotary disc 3 is disposed on the top of the first protection post 1, a rotary rod 4 is fixedly connected to the bottom of the rotary disc 3, the bottom of the rotary rod 4 penetrates through the inner cavity of the first protection post 1 and is sleeved with a gear 5, a warning banner 6 used in cooperation with the second protection post 2 is wound on the surface of the rotary rod 4, one side of the warning banner 6, which is far away from the rotary rod 4, penetrates through the outer side of the first protection post 1 and is fixedly connected with the second protection post 2, a fixing mechanism 7 used in cooperation with the gear 5 is disposed on the top of the inner cavity of the first protection post 1, a fixing block 8 is fixedly connected to the top of the right side of the first protection post 1, a fixing sleeve 9 used in cooperation with the second protection post 2 is sleeved on the right side of, the top of fixed cover 9 is provided with positioning mechanism 10 with the cooperation of fixed block 8 use, and the constant head tank 11 that uses with positioning mechanism 10 cooperation is seted up at the top of fixed block 8.
Referring to fig. 3, the fixing mechanism 7 includes a connecting plate 701, a clamping plate 702 fixedly connected to the left side of the connecting plate 701 and used in cooperation with the gear 5, a limiting rod 703 fixedly connected to the right side of the connecting plate 701, a spring 704 sleeved on the surface of the limiting rod 703, and a limiting groove 705 matched with the limiting rod 703 and used in cooperation with the top of the right side of the inner cavity of the first protective column 1.
Adopt above-mentioned scheme: through setting up fixed establishment 7, can fix the position of rotary rod 4 through gear 5, conveniently fix the position of warning banner 6, avoid warning banner 6's position to take place the migration to influence the protecting effect.
Referring to fig. 3, the positioning mechanism 10 includes a positioning frame 1001, an adjusting rod 1002 is movably connected to the top of the positioning frame 1001, a positioning rod 1003 used in cooperation with the positioning slot 11 is movably connected to the left side of the rear side of the adjusting rod 1002, the bottom of the positioning rod 1003 penetrates through the fixing sleeve 9 and extends to the inner cavity of the positioning slot 11, and a tension spring 1004 used in cooperation with the fixing sleeve 9 is fixedly connected to the left side of the bottom of the adjusting rod 1002.
Adopt above-mentioned scheme: through setting up positioning mechanism 10, can fix the position of first protection post 1 and second protection post 2, the person of facilitating the use carries, avoids causing warning banner 6 to appear damaging to influence user's later stage and use.
Referring to fig. 1 and 2, a base 12 is arranged at the bottom of each of the first protective column 1 and the second protective column 2, a clamping rod 13 is fixedly connected at the bottom of each of the first protective column 1 and the second protective column 2, a clamping groove 14 matched with the clamping rod 13 for use is formed in the top of the base 12, one side of the clamping rod 13, close to the inner wall of the clamping groove 14, is in contact with the inner wall of the clamping groove 14, and a reflective sticker 15 is fixedly connected at the front side of each of the first protective column 1 and the second protective column 2.
Adopt above-mentioned scheme: through setting up first protection post 1 and second protection post 2, can play the supporting role, through setting up base 12, can fix the position of first protection post 1 and second protection post 2, increase the stability of first protection post 1 and second protection post 2, through setting up kelly 13 and draw-in groove 14, can play limiting displacement, increase the fixed effect to first protection post 1 and second protection post 2, improve the security, through setting up reflection of light subsides 15, can play the warning effect at night, increase the safety protection effect.
Referring to fig. 1 and 2, the junction of the surface of the rotary rod 4 and the first protective column 1 is through bearing swing joint, the surface of the rotary rod 4 and the inner wall fixed connection of the gear 5, the opening 16 used with the cooperation of the warning banner 6 is seted up on the right side of the first protective column 1, the bottom cover of the rotary rod 4 is equipped with the bearing seat, the bottom of the bearing seat and the inner wall fixed connection of the first protective column 1, one side of the fixed block 8 near the inner wall of the fixed sleeve 9 contacts with the inner wall of the fixed sleeve 9, the right side of the fixed sleeve 9 is fixedly connected with the second protective column 2.
Adopt above-mentioned scheme: through setting up rotary rod 4, the person of facilitating the use adjusts the position of warning banner 6 according to the scope of construction, reduce the waste of resource, reduce the scope of construction, increase the safety protection effect, through setting up bearing and bearing frame, make things convenient for rotary rod 4 to rotate, through setting up gear 5, can play limiting displacement, the convenience is fixed the position of rotary rod 4, through setting up opening 16, make things convenient for warning banner 6 to remove, through setting up warning banner 6, can play warning and guard action, through setting up fixed block 8 and fixed cover 9, conveniently fix first guard post 1 and second guard post 2.
Referring to fig. 1, 2 and 3, the connecting plate 701 is L-shaped, one side of the clamping plate 702 close to the gear 5 contacts with the gear 5, the left side of the connecting plate 701 penetrates through the outer side of the first protective column 1 and is fixedly connected with the push plate 17, the left side of the first protective column 1 is provided with a through opening 18 used in cooperation with the connecting plate 701, the left side of the top of the first protective column 1 is fixedly connected with a vertical plate 19 used in cooperation with the push plate 17, and the surface of the limiting rod 703 contacts with the inner wall of the spring 704.
Adopt above-mentioned scheme: through setting up connecting plate 701, can play the connection effect, conveniently adjust the position of cardboard 702, through setting up push pedal 17 and riser 19, conveniently adjust the position of connecting plate 701, through setting up opening 18, make things convenient for connecting plate 701 to remove, through setting up gag lever post 703 and spacing groove 705, can play limiting displacement to the position of connecting plate 701, through setting up spring 704, can play the fixed action to connecting plate 701, increase the fixed effect of cardboard 702 to gear 5.
Referring to fig. 2 and 3, the bottom of the positioning rack 1001 is fixedly connected to the fixing sleeve 9, the connecting portion of the adjusting rod 1002, the positioning rack 1001 and the positioning rod 1003 is movably connected through a rotating shaft, the top of the fixing sleeve 9 is provided with a through hole 20 used in cooperation with the positioning rod 1003, and one side of the positioning rod 1003 close to the inner wall of the positioning slot 11 is in contact with the inner wall of the positioning slot 11.
Adopt above-mentioned scheme: through setting up locating rack 1001, can play the fixed action, adjust pole 1002 through the setting, conveniently adjust the position of locating lever 1003, through setting up the pivot, conveniently adjust pole 1002 and rotate, through setting up through-hole 20, make things convenient for locating lever 1003 to remove, through setting up locating lever 1003, can fix the position of fixed block 8 through constant head tank 11, through setting up constant head tank 11, can play limiting displacement, increase the fixed effect of locating lever 1003 to fixed block 8.
The utility model discloses a theory of operation:
when in use, a user pushes the push plate 17 through the vertical plate 19, the push plate 17 drives the clamping plate 702 to move out of the inner cavity of the gear 5 through the connecting plate 701, the connecting plate 701 drives the limiting rod 703 to move out of the inner cavity of the limiting groove 705 and extrude the spring 704, then the adjusting rod 1002 is pushed downwards, the adjusting rod 1002 drives the positioning rod 1003 to move out of the inner cavity of the positioning groove 11 and stretch the tension spring 1004, then the second protective column 2 is moved, the second protective column 2 drives the fixing sleeve 9 to move out of the surface of the fixing block 8, then the adjusting rod 1002 is loosened, the tension generated after the tension spring 1004 stretches drives the positioning rod 1003 to move downwards, the positioning rod 1003 enters the inner cavity of the fixing sleeve 9, the length of the warning banner 6 is adjusted according to a range needing to be protected, the push plate 17 is loosened after the adjustment is completed, the force released after the spring 704 is compressed drives the clamping plate 702 to, then, the first protection column 1 and the second protection column 2 are moved, and the first protection column 1 and the second protection column 2 both drive the clamping rod 13 to enter the inner cavity of the clamping groove 14, so that the protection of the construction range is completed.
In summary, the following steps: the protection device for road construction solves the problems that the prior protection device for road construction is inconvenient to use and mostly adopts fences due to uncertain factors in construction range, the size range is basically unfixed, waste of used resources can be caused, a large number of construction ranges can be occupied, safety of pedestrians and vehicles can not be effectively protected, potential safety hazards are increased on the contrary, and inconvenience is brought to users, and the protection device for road construction has the advantage of convenience in use, is worthy of popularization.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. The utility model provides a protector is used in road construction, includes first guard post (1), its characterized in that: the right side of first protection post (1) is provided with second protection post (2), the top of first protection post (1) is provided with carousel (3), bottom fixedly connected with rotary rod (4) of carousel (3), the inner chamber and the cover that run through to first protection post (1) in the bottom of rotary rod (4) are equipped with gear (5), the surface winding of rotary rod (4) has warning banner (6) of using with the cooperation of second protection post (2), one side that rotary rod (4) were kept away from in warning banner (6) runs through to the outside of first protection post (1) and with second protection post (2) fixed connection, the top of first protection post (1) inner chamber is provided with fixed establishment (7) of using with gear (5) cooperation, top fixedly connected with fixed block (8) on first protection post (1) right side, the right side cover on fixed block (8) surface is equipped with fixed cover (9) of using with the cooperation of second protection post (2) The top of the fixing sleeve (9) is provided with a positioning mechanism (10) matched with the fixing block (8) for use, and the top of the fixing block (8) is provided with a positioning groove (11) matched with the positioning mechanism (10) for use.
2. The protecting device for road construction as claimed in claim 1, wherein: the fixing mechanism (7) comprises a connecting plate (701), a clamping plate (702) which is fixedly connected with the left side of the connecting plate (701) and matched with the gear (5) for use, a limiting rod (703) which is fixedly connected with the right side of the connecting plate (701), a spring (704) is sleeved on the surface of the limiting rod (703), and a limiting groove (705) which is matched with the limiting rod (703) for use is formed in the top of the right side of the inner cavity of the first protection column (1).
3. The protecting device for road construction as claimed in claim 1, wherein: positioning mechanism (10) are including locating rack (1001), the top swing joint of locating rack (1001) has regulation pole (1002), the left side swing joint of adjusting pole (1002) rear side has locating lever (1003) that uses with constant head tank (11) cooperation, the inner chamber of fixed cover (9) and extension to constant head tank (11) is run through to the bottom of locating lever (1003), adjust the extension spring (1004) that left side fixedly connected with and fixed cover (9) cooperation of pole (1002) bottom used.
4. The protecting device for road construction as claimed in claim 1, wherein: the bottom of first guard post (1) and second guard post (2) all is provided with base (12), the equal fixedly connected with kelly (13) in bottom of first guard post (1) and second guard post (2), draw-in groove (14) that use with kelly (13) cooperation are seted up at the top of base (12), kelly (13) are close to the inner wall contact of one side and draw-in groove (14) of draw-in groove (14) inner wall, the equal fixedly connected with reflection of light subsides (15) in front side of first guard post (1) and second guard post (2).
5. The protecting device for road construction as claimed in claim 1, wherein: the surface of rotary rod (4) and the junction of first protection post (1) pass through bearing swing joint, the surface of rotary rod (4) and the inner wall fixed connection of gear (5), opening (16) that uses with warning banner (6) cooperation are seted up on the right side of first protection post (1), the bottom cover of rotary rod (4) is equipped with the bearing frame, the bottom of bearing frame and the inner wall fixed connection of first protection post (1), one side that fixed block (8) are close to fixed cover (9) inner wall and the inner wall contact of fixed cover (9), the right side and the second protection post (2) fixed connection of fixed cover (9).
6. The protecting device for road construction as claimed in claim 2, wherein: the utility model discloses a safety protection device for a car, including connecting plate (701), cardboard (702), connecting plate (701) and connecting plate (701), the cardboard (702) are close to one side and the contact of gear (5), the left side of connecting plate (701) is run through to the outside of first protection post (1) and fixedly connected with push pedal (17), through-hole (18) of using with connecting plate (701) cooperation are seted up to the left side of first protection post (1), the left side fixedly connected with at first protection post (1) top is with riser (19) of push pedal (17) cooperation use, the surface of gag lever post (703) and the inner wall contact of spring (704).
7. The protecting device for road construction as claimed in claim 3, wherein: the bottom and the fixed cover (9) fixed connection of locating rack (1001), adjust pole (1002) and all through pivot swing joint with the junction of locating rack (1001) and locating lever (1003), through-hole (20) of using with locating lever (1003) cooperation are seted up to the top of fixed cover (9), locating lever (1003) are close to one side of constant head tank (11) inner wall and the inner wall contact of constant head tank (11).
CN202021813406.9U 2020-08-26 2020-08-26 Protector is used in road construction Expired - Fee Related CN213597638U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202021813406.9U CN213597638U (en) 2020-08-26 2020-08-26 Protector is used in road construction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202021813406.9U CN213597638U (en) 2020-08-26 2020-08-26 Protector is used in road construction

Publications (1)

Publication Number Publication Date
CN213597638U true CN213597638U (en) 2021-07-02

Family

ID=76586339

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202021813406.9U Expired - Fee Related CN213597638U (en) 2020-08-26 2020-08-26 Protector is used in road construction

Country Status (1)

Country Link
CN (1) CN213597638U (en)

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20210702

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