CN110316128A - A kind of safety-type sweeping machine - Google Patents
A kind of safety-type sweeping machine Download PDFInfo
- Publication number
- CN110316128A CN110316128A CN201910253638.9A CN201910253638A CN110316128A CN 110316128 A CN110316128 A CN 110316128A CN 201910253638 A CN201910253638 A CN 201910253638A CN 110316128 A CN110316128 A CN 110316128A
- Authority
- CN
- China
- Prior art keywords
- protective fence
- sweeping machine
- shape protective
- shape
- automobile
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/56—Fittings damping bouncing force in truck collisions, e.g. bumpers; Arrangements on high-riding vehicles, e.g. lorries, for preventing vehicles or objects from running thereunder
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
- E01H1/00—Removing undesirable matter from roads or like surfaces, with or without moistening of the surface
- E01H1/02—Brushing apparatus, e.g. with auxiliary instruments for mechanically loosening dirt
- E01H1/05—Brushing apparatus, e.g. with auxiliary instruments for mechanically loosening dirt with driven brushes
- E01H1/053—Brushing apparatus, e.g. with auxiliary instruments for mechanically loosening dirt with driven brushes having vertical axes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
Abstract
The present invention provides a kind of safety-type sweeping machine, sweeping machine includes vehicle body and chassis, wherein, bumper housings are set up respectively at left and right sides of vehicle body, sweeping machine further includes collision riser, anticollision mechanism and two buffer gears, anticollision mechanism includes several screws and the first L shape protective fence, the 2nd L shape protective fence and the 3rd L shape protective fence that set gradually from back to front, has upwardly extended Tapered Column respectively at left and right sides of the first L shape protective fence, Tapered Column is inserted upwardly into bumper housings.Buffer gear is set in bumper housings and each buffer gear includes spring, damping sliding block, connecting rod and wedge block.The present invention adds buffer gear and anticollision mechanism in the tail portion of traditional sweeping machine; buffer gear and anticollision mechanism is allowed to play the effect for absorbing collision energy and keeping out automobile; wear end collision of automobile is set to stop in terms of subtracting energy and stopping two; it effectively prevent wear end collision of automobile to pierce the bottom of sweeping machine, while protecting the chassis of sweeping machine and the front of the car of automobile.
Description
Technical field
The present invention relates to a kind of safety-type sweeping machines.
Background technique
With the fast development of modern city, sweeping machine has become the common cleaning equipment in city, and sweeper is carrying out
Running speed is slower when cleaning work, is easy to be easy to cause vehicle by the Vehicular impact of high speed traveling on seething road
Disaster event.And the chassis setting of sweeping machine is higher, easily directly from the chassis of sweeping machine when car hits sweeping machine from tail portion
Into under the extruding on chassis, the chassis of sweeping machine and car damage are more serious.
In view of the above-mentioned problems, the applicant furthers investigate in view of the above-mentioned drawbacks in the prior art, according to the spy of sweeping machine
Point is designed, and has this case generation then.
Summary of the invention
The purpose of the present invention is to provide a kind of safety-type sweeping machine, effectively reduce car from tail portion hit and caused by
Damage.
The present invention is implemented as follows:
A kind of safety-type sweeping machine is provided, sweeping machine includes vehicle body and chassis, and chassis is located at below vehicle body, wherein vehicle body
The left and right sides sets up bumper housings respectively, and sweeping machine further includes collision riser, anticollision mechanism and two buffer gears, the anticollision
Mechanism includes that several screws and the first L shape protective fence, the 2nd L shape protective fence and the 3rd L shape that set gradually from back to front are anti-
Guardrail, every L shape protective fence includes transverse plate and vertical plate and transverse plate is connected to behind vertical plate, the protection of the first L shape
Front end of the rear end of the transverse plate on column by the folded transverse plate for being located at the 2nd L shape protective fence of screw, the transverse direction of the 2nd L shape protective fence
Front end of the rear end of plate by the folded transverse plate for being located at the 3rd L shape protective fence of screw, the first L shape protective fence left and right sides point
Tapered Column is not upwardly extended, which is inserted upwardly into the bumper housings, and the buffer gear is set in bumper housings simultaneously
And each buffer gear includes spring, damping sliding block, connecting rod and wedge block, it is sliding that the both ends of the spring is separately connected damping
The preceding inner wall of block and bumper housings, the damping sliding block other end are rotatablely connected the front end of connecting rod, and the rear end thereof of the connecting rod connects
It connects on Tapered Column, the lozenges of the wedge block supports the lozenges of Tapered Column, the bottom connection of wedge block faced directly
Riser is collided, which is located between two wedge blocks.
Further, the sweeping machine further includes there are two motor-driven jack, and two motor-driven jacks set up separately under chassis
The right and left in face, the power-on switch of two motor-driven jacks are respectively provided on the lozenges of two wedge blocks.
Further, the sweeping machine further includes having emergency alarm bell, and the emergency alarm bell is located on the wedge block, described logical
The energization and power-off of electric switch control emergency alarm bell circuit.
Further, the screw number ratio for hammering into the first L shape protective fence and the 2nd L shape protective fence hammers into the protection of the 2nd L shape
The screw number of column and the 3rd L shape protective fence is few.
Further, arc frame is equipped with behind the vertical plate of the first L shape protective fence, along right and left on the arc frame
To laying several rotating cylinders at equal intervals.
Further, the rotating cylinder is made of polyurethane foam Energy dissipating material and the surface of rotating cylinder is equipped with fluorescence
Powder.
Further, the rear surface of the collision riser is equipped with Wasted-energy steel plate and several damping springs, the Wasted-energy steel plate table
Face has several trapezoidal protrusions, and the trapezoidal protrusion and collision riser form damping space, and the damping spring is set to damping
In space and damping spring both ends are separately connected collision riser and Wasted-energy steel plate, several damping springs and damping space are one by one
With setting.
Further, the Wasted-energy steel plate is made of polyurethane foamed material.
After adopting the above technical scheme, the present invention relates to a kind of safety-type sweeping machines, and compared with prior art, beneficial effect
It is, the present invention adds buffer gear and anticollision mechanism in the tail portion of traditional sweeping machine, and buffer gear and anticollision mechanism is allowed to play
It absorbs collision energy and keeps out the effect of automobile, force wear end collision of automobile to stop in terms of subtracting energy and stopping two, effectively prevent knocking into the back
Automobile pierces the bottom of sweeping machine, while protecting the chassis of sweeping machine and the front of the car of automobile, substantially reduces rear-end collision and sweeps road
The causality loss of vehicle provides more effective safety precautions, practical.
Detailed description of the invention
Fig. 1 is side structure schematic diagram of the invention；
Fig. 2 is one of structure schematic diagram of the invention；
Fig. 3 is the two of structure schematic diagram of the invention；
Fig. 4 is the structural schematic diagram of the first L shape protective fence of the invention；
Fig. 5 is the partial enlargement diagram of part A in Fig. 1；
Fig. 6 is the connection schematic diagram of collision riser of the invention, Wasted-energy steel plate and damping spring.
Description of symbols:
11, the first L shape protective fence, 111, Tapered Column, 112, arc frame, 113, rotating cylinder, 1131, fluorescent powder, 12, second
L shape protective fence, the 13, the 3rd L shape protective fence, 14, screw, 15, transverse plate, 16, vertical plate；21, spring, 22, damping sliding block,
23, connecting rod, 24, wedge block；3, motor-driven jack, 31, power-on switch；4, sweeping machine；5, bumper housings；6, collision is perpendicular
Plate, 61, Wasted-energy steel plate, 611, trapezoidal protrusion, 62, damping spring, 63, damping space；7, emergency alarm bell.
Specific embodiment
In order to describe the technical content, the structural feature, the achieved object and the effect of this invention in detail, below in conjunction with embodiment
And attached drawing is cooperated to be explained in detail.Coordinate X, Y, Z respectively indicate front-rear direction, left and right directions and up and down direction in figure.
Referring to Fig.1 shown in -5, the present invention provides a kind of safety-type sweeping machine 4, and sweeping machine 4 includes vehicle body and chassis, chassis
It is located at below vehicle body, wherein bumper housings 5 are set up at left and right sides of vehicle body respectively, it can be using the side such as screw bolt or welding
Formula connection, sweeping machine 4 further include collision riser 6, anticollision mechanism and two buffer gears.The anticollision mechanism includes several screws
14 and the first L shape protective fence 11, the 2nd L shape protective fence 12 and the 3rd L shape protective fence 13 that set gradually from back to front, it is each
L shape protective fence includes transverse plate 15 and vertical plate 16 and transverse plate 15 is vertically connected on behind vertical plate 16, and the first L shape is anti-
Front end of the rear end of the transverse plate 15 of guardrail 11 by the folded transverse plate 15 for being located at the 2nd L shape protective fence 12 of screw 14, the 2nd L shape
The front end that the rear end of the transverse plate 15 of protective fence 12 passes through the folded transverse plate 15 for being located at the 3rd L shape protective fence 13 of screw 14.Due to
Screw hammers into two L shape protective fences, therefore needs to infer screw before L shape protective fence is mobile, infers that screw needs biggish push away
Power, can be mobile from the rear end forward end of the 2nd L shape protective fence 12 when the first L shape protective fence 11 is hit by wear end collision of automobile, the
The impact force of one L shape protective fence mobile moment can infer screw to consume crash energy, similarly, the 2nd L shape protective fence 12
Also it to absorb energy and infer that screw just can be mobile to absorb Impact energy from the rear end forward end of the 3rd L shape protective fence 13, finally
By inferring that screw consumes most impact energy.
As shown in Fig. 1,4,11 left and right sides of the first L shape protective fence has upwardly extended Tapered Column 111 respectively, the wedge shape
Column 111 is inserted upwardly into the bumper housings 5.Arc frame 112 is equipped with behind the vertical plate of the first L shape protective fence 11, it should
Arc frame 112 lays several rotating cylinders 113 at equal intervals in left-right direction, several rotating cylinders 113 with arc frame 112 radian
Lay, when wear end collision of automobile collides the first L shape protective fence 11, the arcs of several rotating cylinders 113 arrange so that rotating cylinder 113 by
The impact force arrived is different, therefore rotating cylinder 113 can be driven to rotate when wear end collision of automobile hits rotating cylinder 113, and 113 turns of rotating cylinder
Dynamic one side can consume the impact energy of automobile, and on the other hand can guiding wear end collision of automobile, two sides are mobile to the left and right, effectively avoid
Automobile drives straight in the chassis of sweeping machine 4, is further reduced causality loss.
The buffer gear is set in bumper housings and each buffer gear includes spring 21, damping sliding block 22, connection
Bar 23 and wedge block 24,21 both ends of spring are separately connected the preceding inner wall of damping sliding block 22 and bumper housings, and damping is sliding
22 other end of block is rotatablely connected the front end of connecting rod 23, and the rear end thereof of the connecting rod 23 is connected on Tapered Column 111, that is, connects
Bar 23 connects damping sliding block 22 and Tapered Column 111, and the spring energy of spring 21 props up Tapered Column 111 by connecting rod 23, so that wedge
Shape column 111 is stuck between wedge block 24 and damping sliding block 22.The lozenges of the wedge block 24 supports the wedge of Tapered Column 111
Shape face, the bottom connection collision riser 6 of wedge block 24 faced directly, the collision riser 6 are located between two wedge blocks 24, edge
4 left and right directions of sweeping machine extends.
Use state of the invention is as follows: wear end collision of automobile knocks collision riser 6 from 4 tail portion of sweeping machine, collides 6 stress of riser
Wedge block 24 is pushed to move forward, wedge block 24, which moves forward, pushes Tapered Column 111 to move down, the rear end of connecting rod 23
It is moved down with Tapered Column 111, so that the front end of connecting rod 23 pushes 22 forward slip of damping sliding block, damping sliding block 22 is to advancing slip
Spring 21 is squeezed during dynamic, and Impact energy, after the complete accumbency of connecting rod 23, anti-collision machine are so absorbed by the deformation of spring 21
Structure has also declined completely, and anticollision mechanism decline is played the role of preventing car from piercing 4 hull bottom of sweeping machine, still has at this time
Collision energy is not absorbed, then collision energy continues to front transfer, as soon as during automobile impacting L shape protective fence 11,
Rotating cylinder 113 has been knocked, has on the one hand been fractureed by inferring that screw consumes part impact energy, another aspect rotating cylinder 113 turns
Dynamic consumption portion of energy, and the recurvate arc placing structure of rotating cylinder 113 is additionally favorable for steer motor two sidesway to the left and right
Dynamic, final realize exhausts collision energy and prevents from directly entering 4 bottom of sweeping machine.
The size of the screw of different size is different, intensity also just it is different, fracture required for thrust with regard to different,
What specific thrust numerical value can be surveyed by experiment, in actual use, lane of the present invention for different speeds, Ke Yigen
It is estimated that going out the collision energy generated under different speeds, then according to the collision energy of estimation, parameter of the invention is carried out
Optimization, for example increase by 14 quantity of screw, increase coefficient of elasticity etc., fully absorb it in certain distance self-energy, thus greatly
The big geometry compatibility and rigidity compatibility for improving two vehicles in rear-end impact, the crashworthiness of protection staff and vehicle.
Wherein, the rotating cylinder 113 is made of polyurethane foam Energy dissipating material, utilizes the deformation of rotating cylinder 113 itself
Also portion of energy can be absorbed, and converts flexible impact for the rigid collision of automobile and rotating cylinder 113, is reduced automobile deformed.Rotation
The surface of rotating cylinder is equipped with fluorescent powder, and the sweeping machine tailstock is allowed to issue fluorescence, and the brightness of the fluorescence will not make the colleague of other automobiles
It can play a warning role at obstacle and at night, accidentally be hit caused by preventing because of insufficient light.
As the preferred embodiment of the present invention, as shown in Fig. 2, the sweeping machine 4 further include there are two motor-driven jack 3,
Two motor-driven jacks 3 set up the right and left below chassis separately, and the power-on switch 31 of two motor-driven jacks 3 is respectively provided at two
On the lozenges of a wedge block 24, a power-on switch 31 controls a motor-driven jack 3, in order to simplify electric wire connection knot
The power circuit of structure, motor-driven jack 3 can be individually designed, using lithium battery power supply.Tapered Column is driven when wedge block 24 moves forward
The power-on switch 31 of motor-driven jack 3 can be touched when 111 decline can jack up and sweep after power-on switch 31 starts motor-driven jack 3
The tail portion of road car 4, to expand the accommodating space of wear end collision of automobile, reduces vapour so that 4 tail portion of sweeping machine increases at a distance from ground
The area that vehicle and 4 chassis of sweeping machine are directly hit, protects 4 chassis of front of the car and sweeping machine of automobile significantly.
It is highly preferred that the sweeping machine further includes having emergency alarm bell 7, the emergency alarm bell is located on the wedge block, described
Power-on switch controls the energization and power-off of emergency alarm bell circuit, and a power-on switch controls an emergency alarm bell and one electronic very heavy
It pushes up, connects after emergency alarm bell circuit and motor-driven jack circuit in parallel with power-on switch, power-on switch is opened, and two circuits are all logical
Electricity, conversely, power-on switch is closed, two circuits are all powered off.When automobile crash to L shape protective fence and move back L shape protective fence
When dynamic, power-on switch will be pressed, also just starting emergency alarm bell issues alarm at this time, plays warning to surrounding vehicles and environment and makees
With.
The first L shape protective fence 11 and the 2nd L are hammered into as another preferred embodiment of the invention according to the principle of collision
14 quantity of screw of shape protective fence 12 is fewer than 14 quantity of screw for hammering into the 2nd L shape protective fence 12 and the 3rd L shape protective fence 13.Than
As in the present embodiment, the screw 14 for hammering into the first L shape protective fence 11 and the 2nd L shape protective fence 12 has a row, hammers into the 2nd L shape
The screw 14 of protective fence 12 and the 3rd L shape protective fence 13 has two rows, since the impact force of automobile at the beginning is maximum, the first L
Shape protective fence 11 only have row's screw 14, the screw 14 be pushed off consumed by impact energy it is smaller, impact force can only be carried out
Certain consumption, so vehicle will continue to move, then further becomes smaller using the counteracting of two rows of 14 resistances of screw, with regard to this
Sample, impact force is smaller and smaller, and resistance is increasing, so that absorbing energy is an incremental process, in this way, the present invention is not
The biggish rigid impact of intensity can be carried out with the impact force of maximum, force, take the mode of slow consumption impact force that can effectively avoid this
Invention is directly smashed, and is generated the more fragment of large impact power and caused secondary injury, while realizing the effect for absorbing energy.Most
Afterwards, after the 2nd L shape protective fence 122 slides into bottom, impact force has been not enough to that the 3rd L shape protective fence 13 is allowed to move backward again, this
Sample can effectively prevent the protected object of Vehicular impact, greatly improve security performance.It in actual use, can be according to estimating
Energy selection L shape protective fence quantity.
With wear end collision of automobile collide at first be collision riser, in order to reduce the damage of wear end collision of automobile, as shown in fig. 6,
As another preferred embodiment of the invention, the rear surface of the collision riser 6 is equipped with Wasted-energy steel plate 61 and several damping bullets
Spring 62,61 surface of Wasted-energy steel plate have several trapezoidal protrusions 611, and the trapezoidal protrusion 611 forms damping with collision riser 6
Space 63, damping space are that Wasted-energy steel plate 61 provides more deformation spaces, and the damping spring 62 is set in damping space 63 simultaneously
And 62 both ends of damping spring are separately connected collision riser 6 and Wasted-energy steel plate 61, several damping springs 62 and damping space 63 are one by one
Matching setting, the Wasted-energy steel plate 61 are made of polyurethane foamed material, can be carried out flexible deformation to absorb impact energy.Energy consumption
Plate 61 is squeezed and deformed after being impacted into damping space 63, and to absorb portion of energy, damping space 63 is impacted during becoming smaller
Energy is transmitted to again on damping spring 62, and damping spring compressive deformation, which is also realized, absorbs impact energy, so by Wasted-energy steel plate and
The deformation of damping spring consumes energy for the first time to wear end collision of automobile, plays buffering effect, avoids direct rigid impact to the vapour that knocks into the back
Vehicle causes larger damage.
The above description is only an embodiment of the present invention, is not intended to limit scope of patent protection of the invention, all utilizations
Equivalent structure or equivalent flow shift made by description of the invention and accompanying drawing content is applied directly or indirectly in other correlations
Technical field, be included within the scope of the present invention.
Claims (1)
1. a kind of safety-type sweeping machine, sweeping machine include vehicle body and chassis, chassis is located at below vehicle body, which is characterized in that vehicle body
The left and right sides sets up bumper housings respectively, and sweeping machine further includes collision riser, anticollision mechanism and two buffer gears, the anticollision
Mechanism includes that several screws and the first L shape protective fence, the 2nd L shape protective fence and the 3rd L shape that set gradually from back to front are anti-
Guardrail, every L shape protective fence includes transverse plate and vertical plate and transverse plate is connected to behind vertical plate, the protection of the first L shape
Front end of the rear end of the transverse plate on column by the folded transverse plate for being located at the 2nd L shape protective fence of screw, the transverse direction of the 2nd L shape protective fence
Front end of the rear end of plate by the folded transverse plate for being located at the 3rd L shape protective fence of screw, the first L shape protective fence left and right sides point
Tapered Column is not upwardly extended, which is inserted upwardly into the bumper housings；The buffer gear is set in bumper housings simultaneously
And each buffer gear includes spring, damping sliding block, connecting rod and wedge block, it is sliding that the both ends of the spring is separately connected damping
The preceding inner wall of block and bumper housings, the damping sliding block other end are rotatablely connected the front end of connecting rod, and the rear end thereof of the connecting rod connects
It connects on Tapered Column, the lozenges of the wedge block supports the lozenges of Tapered Column, the bottom connection of wedge block faced directly
Riser is collided, which is located between two wedge blocks.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810295421.XA CN108583492A (en) | 2018-03-30 | 2018-03-30 | A kind of safety-type sweeping machine |
| CN201810295421X | 2018-03-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110316128A true CN110316128A (en) | 2019-10-11 |
Family
ID=63621535
Family Applications (5)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810310702.8A Withdrawn CN108583482A (en) | 2018-03-30 | 2018-03-30 | A kind of safety-type sweeping machine of good buffer effect |
| CN201810311195.XA Withdrawn CN108891374A (en) | 2018-03-30 | 2018-03-30 | A kind of safety-type sweeping machine with warning function |
| CN201810310822.8A Withdrawn CN108891373A (en) | 2018-03-30 | 2018-03-30 | A kind of safety-type sweeping machine that anti-collision effect is good |
| CN201810295421.XA Withdrawn CN108583492A (en) | 2018-03-30 | 2018-03-30 | A kind of safety-type sweeping machine |
| CN201910253638.9A Withdrawn CN110316128A (en) | 2018-03-30 | 2019-03-30 | A kind of safety-type sweeping machine |
Family Applications Before (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810310702.8A Withdrawn CN108583482A (en) | 2018-03-30 | 2018-03-30 | A kind of safety-type sweeping machine of good buffer effect |
| CN201810311195.XA Withdrawn CN108891374A (en) | 2018-03-30 | 2018-03-30 | A kind of safety-type sweeping machine with warning function |
| CN201810310822.8A Withdrawn CN108891373A (en) | 2018-03-30 | 2018-03-30 | A kind of safety-type sweeping machine that anti-collision effect is good |
| CN201810295421.XA Withdrawn CN108583492A (en) | 2018-03-30 | 2018-03-30 | A kind of safety-type sweeping machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (5) | CN108583482A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113043981A (en) * | 2021-03-30 | 2021-06-29 | 重庆骏普康实业有限公司 | Effectual vehicle rear protective fence assembly of bradyseism |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110258400A (en) * | 2019-06-27 | 2019-09-20 | 徐州徐工环境技术有限公司 | A kind of sweeper with anticollision device, collision-prevention device |
| CN110359405A (en) * | 2019-08-23 | 2019-10-22 | 广州市欧树环保科技有限公司 | A kind of good sweeping machine with overload warning function of cleaning effect |
| CN112896080B (en) * | 2021-03-09 | 2022-08-16 | 泰州市佳洁环保科技有限公司 | Electric patrol car with anti-collision structure |
-
2018
- 2018-03-30 CN CN201810310702.8A patent/CN108583482A/en not_active Withdrawn
- 2018-03-30 CN CN201810311195.XA patent/CN108891374A/en not_active Withdrawn
- 2018-03-30 CN CN201810310822.8A patent/CN108891373A/en not_active Withdrawn
- 2018-03-30 CN CN201810295421.XA patent/CN108583492A/en not_active Withdrawn
-
2019
- 2019-03-30 CN CN201910253638.9A patent/CN110316128A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113043981A (en) * | 2021-03-30 | 2021-06-29 | 重庆骏普康实业有限公司 | Effectual vehicle rear protective fence assembly of bradyseism |
| CN113043981B (en) * | 2021-03-30 | 2022-09-02 | 重庆骏普康实业有限公司 | Effectual vehicle rear protective fence assembly of bradyseism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108891374A (en) | 2018-11-27 |
| CN108583482A (en) | 2018-09-28 |
| CN108583492A (en) | 2018-09-28 |
| CN108891373A (en) | 2018-11-27 |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20191011 |