CN112726359A - Intelligent protection device for small-size pavement cutting machine - Google Patents
Intelligent protection device for small-size pavement cutting machine Download PDFInfo
- Publication number
- CN112726359A CN112726359A CN202011544655.7A CN202011544655A CN112726359A CN 112726359 A CN112726359 A CN 112726359A CN 202011544655 A CN202011544655 A CN 202011544655A CN 112726359 A CN112726359 A CN 112726359A
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- China
- Prior art keywords
- shell
- carousel
- fixed connection
- fixedly connected
- swing joint
- Prior art date
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
- E01C23/09—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
- E01C23/09—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges
- E01C23/0906—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for forming, opening-out, cleaning, drying or heating cuts, grooves, recesses or, excluding forming, cracks, e.g. cleaning by sand-blasting or air-jet ; for trimming paving edges
- E01C23/0926—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for forming, opening-out, cleaning, drying or heating cuts, grooves, recesses or, excluding forming, cracks, e.g. cleaning by sand-blasting or air-jet ; for trimming paving edges with power-driven tools, e.g. vibrated, percussive cutters
- E01C23/0933—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for forming, opening-out, cleaning, drying or heating cuts, grooves, recesses or, excluding forming, cracks, e.g. cleaning by sand-blasting or air-jet ; for trimming paving edges with power-driven tools, e.g. vibrated, percussive cutters rotary, e.g. circular-saw joint cutters
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Repair (AREA)
Abstract
The invention relates to the technical field of pavement repair equipment, and discloses an intelligent protection device for a small pavement cutting machine, which comprises a support, wherein a protection cover is fixedly connected to the outer part of the support, a motor is fixedly connected to the outer part of the support, a transmission shaft is fixedly connected to the outer part of the motor, a rotary table is fixedly connected to the outer part of the transmission shaft, a photosensitive assembly is fixedly connected to the inner part of the rotary table, an N pole is fixedly connected to the inner part of the rotary table, an S pole is fixedly connected to the inner part of the rotary table, a connecting rod is movably connected to the inner part of the rotary table, a fixed block is fixedly; through the interact between transmission shaft, carousel, fixed block, turning block, crash pad, the shell, when the cutting piece normally rotates, other structures can not restrict the rotation of cutting piece, and then equipment can be normal cut the road surface, accomplish the cutting step, conveniently carry out on next step and repair.
Description
Technical Field
The invention relates to the technical field of pavement repair equipment, in particular to an intelligent protection device for a small pavement cutting machine.
Background
The grooving machine is mainly used for asphalt and cement pavement repair, water discharge pipes, gas pipes, electric wire pipes and optical cable pipes, and can quickly cut a pavement into uniform grooves by a wheel disc saw to form a new joint surface, optimize the contact layer surface of a crack pouring material and a crack groove, and strengthen the bonding tightness of the crack pouring material and the side wall of the crack groove.
The road load is too heavy and the road crack damage phenomenon is more and more serious because the monitoring quality of the part of roads between the urban and rural areas is not high or the number of people and vehicles is too much, moreover, some roadways or country roads are narrower, and when the road is repaired, a road surface cutting machine is generally needed, when the road surface is repaired, the motor drives the blade to rotate to cut the road surface at a high speed, so that the cutting blade is accelerated to be worn, excessive heat is generated, parts of the cutting machine are possibly damaged, and some road surfaces are not flat, when cutting operation is carried out, the shaking of the equipment can influence the increase of the interaction force between the cutting blade and the road surface, the rotating speed of the cutting blade is reduced, and the cutting blade can be damaged if the cutting blade is pushed forwards.
Therefore, in order to solve the problems, an intelligent protection device for a small pavement cutter is needed.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides an intelligent protection device for a small pavement cutter, which has the advantage of protecting the machine from damage caused by accidents when the machine works, and solves the problems that the cutting blade is accelerated to be worn at a high cutting speed, the generated heat is excessive, the parts of the cutter are possibly damaged, and the cutting blade is possibly damaged.
(II) technical scheme
In order to achieve the purpose of protecting the machine from damage caused by unexpected conditions when the machine works, the invention provides the following technical scheme: the utility model provides an intelligent protector for small-size road surface cutting machine, which comprises a bracket, the outside fixedly connected with protection casing of support, the outside fixedly connected with motor of support, the outside fixedly connected with transmission shaft of motor, the outside fixedly connected with carousel of transmission shaft, the inside fixedly connected with photosensitive assembly of carousel, the inside fixedly connected with N utmost point of carousel, the inside fixedly connected with S utmost point of carousel, the inside swing joint of carousel has the connecting rod, the outside fixedly connected with fixed block of carousel, the inboard fixedly connected with shell of protection casing, the inside swing joint of shell has the turning block, the outside fixedly connected with even board of turning block, the inside fixedly connected with crash pad of shell, the inside fixedly connected with casing of shell, the inside of casing is provided with the current variant, the inside fixedly connected with electric wire of shell.
Preferably, photosensitive element mainly comprises shading shell, transparent shell and photo resistance, and shading shell fixed connection is in the inside of carousel, and transparent shell inlays on the surface of shading shell, and photo resistance swing joint is in the inside of shading shell, and the inside fixedly connected with of carousel directly penetrates the lamp, directly penetrates the specification phase-match of lamp and transparent shell.
Preferably, the inner part of the rotary disc is movably connected with a balancing weight, the outer part of the balancing weight is fixedly connected with a first spring, one end of the first spring, which is far away from the balancing weight, is fixedly connected inside the rotary disc, the balancing weight is matched with the specification of the transparent shell, the inner side of the protective cover is provided with a cutting piece, the cutting piece is fixedly connected outside the transmission shaft, when the cutting piece rotates in a normal rotating speed range, the centrifugal force of the balancing weight is larger than the elastic force of the first spring, the balancing weight does not shield the light of the straight spotlight any more, the resistance value of the photoresistor is reduced, the passing current is increased, when the rotating speed of the cutting piece exceeds the normal rotating speed range, the centrifugal force of the balancing weight is increased, the movement of the balancing weight can lead a movable plate to move, when the interaction force between the cutting piece and the road surface is increased, the, the resistance of the photoresistor is increased, and the passing current is reduced.
Preferably, the specification phase-match and the position of the N utmost point and the S utmost point are corresponding, the outside swing joint of connecting rod has spring two, spring two keeps away from the one end fixed connection of connecting rod in the inside of carousel, the outside fixedly connected with bar copper of connecting rod, the specification phase-match of bar copper and the N utmost point and the S utmost point, the one end fixedly connected with fly leaf of bar copper is kept away from to the connecting rod, the specification phase-match of fly leaf and balancing weight, single N utmost point, the S utmost point, the connecting rod, the bar copper, an electromagnetic induction subassembly is constituteed to the fly leaf, the inside equipartition angular distribution of carousel has.
Preferably, the fixed block is no less than six and is distributed in the outside of carousel with equal angle, the specification phase-match of fixed block and turning block, and the turning block is no less than six and is distributed in the inside of shell with equal angle, and the main material of electrorheological body is gypsum, lime, carbon powder and olive oil, links board and casing specification phase-match, links board swing joint in the inside of electrorheological body.
Preferably, the inside of shell is seted up flutedly, and crashproof pad fixed connection is in the inboard of recess, and turning block swing joint is in the inboard of recess, and the specification phase-match of turning block and crashproof pad, the inside swing joint of casing have lead electrical pillar, lead electrical pillar and have two, and the electrical pillar of leading between the adjacent casing is connected through the electric wire.
Preferably, the motor, the direct-emitting lamp and the conductive column are electrically connected with an external power supply, the photoresistor, the copper bar and the external power supply are electrically connected with the control center, the direct-emitting lamp is not electrified in an initial state, and the balancing weight is in contact with the transparent shell.
(III) advantageous effects
Compared with the prior art, the invention provides an intelligent protection device for a small-sized pavement cutting machine, which has the following beneficial effects:
1. this an intelligent protector for small-size road surface cutting machine, through the interact between transmission shaft, carousel, fixed block, turning block, crash pad, the shell, when the cutting piece normally rotates, other structures can not restrict the rotation of cutting piece, and then equipment can be normal cut the road surface, accomplish the cutting step, conveniently repair on next step.
2. This an intelligent protector for small-size road surface cutting machine through the interact between all structures, can restrict the rotation of transmission shaft when the rotational speed of cutting piece is too fast, and then makes the rotational speed of cutting piece descend, when the interact power that the cutting piece received increases, can make equipment stop advancing, continues to advance again when the rotational speed of cutting piece is normal, and this device accords with the production theory that intelligent manufacturing.
Drawings
FIG. 1 is a schematic view of the connection between the support, the shield, the motor and the transmission shaft according to the present invention;
FIG. 2 is a schematic partial cross-sectional view of the present invention;
FIG. 3 is an enlarged view taken at A in FIG. 2 according to the present invention;
FIG. 4 is an enlarged view of the invention at B of FIG. 2.
In the figure: 1. a support; 2. a protective cover; 3. a motor; 4. a drive shaft; 5. a turntable; 6. a photosensitive element; 7. an N pole; 8. an S pole; 9. a connecting rod; 10. a fixed block; 11. a housing; 12. rotating the block; 13. connecting plates; 14. an anti-collision pad; 15. a housing; 16. an electrorheological fluid; 17. an electric wire.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, an intelligent protection device for a small pavement cutter comprises a bracket 1, a protective cover 2 is fixedly connected to the outside of the bracket 1, a motor 3 is fixedly connected to the outside of the bracket 1, a transmission shaft 4 is fixedly connected to the outside of the motor 3, a turntable 5 is fixedly connected to the outside of the transmission shaft 4, a balancing weight is movably connected to the inside of the turntable 5, a first spring is fixedly connected to the outside of the balancing weight, one end of the first spring, which is far away from the balancing weight, is fixedly connected to the inside of the turntable 5, the balancing weight is matched with the specification of a transparent shell, a cutting blade is arranged on the inner side of the protective cover 2, the cutting blade is fixedly connected to the outside of the transmission shaft 4, when the cutting blade rotates in a normal rotating speed range, the centrifugal force of the balancing weight is larger than the elastic, when the rotational speed of cutting piece surpassed normal rotational speed scope, the centrifugal force increase of balancing weight, the balancing weight motion can make the fly leaf motion, and the interact power increase between cutting piece and the road surface for the rotational speed of cutting piece reduces, and the centrifugal force of balancing weight is less than the elasticity of spring one, and the balancing weight can move to the inboard and shelter from the light of straight shot-light under the elastic force of spring one, and photo resistance's resistance increases, and the electric current of passing through reduces.
The photosensitive assembly 6 is fixedly connected inside the turntable 5, the photosensitive assembly 6 mainly comprises a shading shell, a transparent shell and a photosensitive resistor, the shading shell is fixedly connected inside the turntable 5, the transparent shell is embedded on the surface of the shading shell, the photosensitive resistor is movably connected inside the shading shell, a direct-emitting lamp is fixedly connected inside the turntable 5, and the specifications of the direct-emitting lamp and the transparent shell are matched; the inside fixedly connected with N utmost point 7 of carousel 5, the specification phase-match and the position of N utmost point 7 and S utmost point 8 are corresponding, the outside swing joint of connecting rod 9 has spring two, the one end fixed connection of connecting rod 9 is kept away from in the inside of carousel 5 to spring two, the outside fixedly connected with bar copper of connecting rod 9, the one end fixedly connected with fly leaf of bar copper is kept away from to bar copper and N utmost point 7 and the specification phase-match of S utmost point 8, the specification phase-match of fly leaf and balancing weight, single N utmost point 7, S utmost point 8, connecting rod 9, the bar copper, an electromagnetic induction subassembly is constituteed to the fly leaf, the inside equal angular distribution of carousel 5 has three electromagnetic induction subassembly.
The inside of the rotary table 5 is fixedly connected with an S pole 8, the inside of the rotary table 5 is movably connected with a connecting rod 9, the outside of the rotary table 5 is fixedly connected with a fixed block 10, the fixed blocks 10 are not less than six and are distributed outside the rotary table 5 at equal angles, the specifications of the fixed blocks 10 are matched with the specifications of a rotating block 12, the rotating block 12 is not less than six and is distributed inside a shell 11 at equal angles, the main materials of an electrorheological body 16 are gypsum, lime, carbon powder and olive oil, a connecting plate 13 is matched with the specifications of a shell 15, and the connecting plate 13 is movably connected inside the electrorheological body; the inboard fixedly connected with shell 11 of protection casing 2, the recess has been seted up to shell 11's inside, and crashproof pad 14 fixed connection is in the inboard of recess, and turning block 12 swing joint is in the inboard of recess, and turning block 12 and crashproof pad 14's specification phase-match, and the inside swing joint of casing 15 has conductive post, and it has two to lead electrical pillar, and conductive post between the adjacent casing 15 is connected through electric wire 17.
The inner part of the shell 11 is movably connected with a rotating block 12, the outer part of the rotating block 12 is fixedly connected with a connecting plate 13, the inner part of the shell 11 is fixedly connected with an anti-collision pad 14, the inner part of the shell 11 is fixedly connected with a shell 15, an electrorheological body 16 is arranged inside the shell 15, the inner part of the shell 11 is fixedly connected with an electric wire 17, the motor 3, the direct-lighting lamp and the conductive post are all electrically connected with an external power supply, the photoresistor, the copper rod and the external power supply are all electrically connected with a control center, in an initial state, the direct-lighting lamp is; through the interaction among the transmission shaft 4, the rotary table 5, the fixed block 10, the rotating block 12, the anti-collision pad 14 and the shell 11, when the cutting blade normally rotates, the rotation of the cutting blade cannot be limited by other structures, so that the equipment can normally cut the road surface, the cutting step is completed, and the next repair is convenient to carry out; through the interact between all structures, can restrict the rotation of transmission shaft 4 when the rotational speed of cutting piece is too fast, and then make the rotational speed of cutting piece descend, when the interaction force that the cutting piece received increases, can make equipment stop advancing, resume advancing when the rotational speed of cutting piece is normal, this device accords with the production theory of intelligent manufacturing.
When the device is started, the direct-emitting lamp is in an initial state, the direct-emitting lamp is not powered on, the balancing weight is in contact with the transparent shell, a user controls an external power supply to supply power to the motor 3 and the direct-emitting lamp through the control center, the motor 3 operates to drive the transmission shaft 4 to rotate, the transmission shaft 4 rotates to drive the rotary disc 5 to rotate, the rotary disc 5 rotates to drive the fixed block 10 to move, when the fixed block 10 moves to be in contact with the rotary block 12, the fixed block 10 moves to drive the rotary block 12 to rotate, the rotary block 12 rotates to drive the connecting plate 13 to move, the electrorheological body 16 is in a liquid state, the transmission shaft 4 rotates to enable the cutting piece to rotate, at the moment, the rotating speed of the cutting piece is in a normal rotating speed range, the centrifugal force of the balancing.
When the rotating speed of the cutting piece exceeds the normal rotating speed range, the centrifugal force of the balancing weight is increased, the movement of the balancing weight can enable the movable plate to move, the movement of the movable plate drives the connecting rod 9 to move, the movement of the connecting rod 9 enables the spring II to be compressed, the movement of the connecting rod 9 drives the copper rod to move, the movement of the copper rod can cut a magnetic induction line between the N pole 7 and the S pole 8 and generate induction current inside the copper rod, at the moment, the control center controls an external power supply to electrify the conducting post, the conducting post is electrified to enable the current variant 16 to become solid, the solid current variant 16 can limit the movement of the connecting plate 13 and further limit the movement of the rotating block 12, when the fixed block 10 moves to be in contact with the rotating block 12, the friction force between the fixed block 10 and the rotating block 12 is increased, the obstruction to the movement of the fixed, the rotational speed of cutting piece also follows the decline, interaction force between cutting piece and the road surface increases, make the rotational speed of cutting piece reduce, the centrifugal force of balancing weight is less than the elasticity of spring one, the balancing weight can move to the inboard and shelter from the light of straight shot-light under the elastic action of spring one, photo resistance's resistance increases, the electric current of passing through reduces, control hub can controlgear no longer impels forward this moment, when the rotational speed of cutting piece gets back to normal rotational speed within range, the centrifugal force of balancing weight is greater than the elasticity of spring one, the light of straight shot-light is no longer sheltered from to the balancing weight, photo resistance's resistance reduces, the electric current increase of passing through, control hub can controlgear continue to impel forward this moment.
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 an intelligent protector for small-size road surface cutting machine, includes support (1), its characterized in that: the outer fixed connection of support (1) has protection casing (2), the outer fixed connection of support (1) has motor (3), the outer fixed connection of motor (3) has transmission shaft (4), the outer fixed connection of transmission shaft (4) has carousel (5), the inside fixed connection of carousel (5) has photosensitive assembly (6), the inside fixed connection of carousel (5) has the N utmost point (7), the inside fixed connection of carousel (5) has the S utmost point (8), the inside swing joint of carousel (5) has connecting rod (9), the outside fixed connection of carousel (5) has fixed block (10), the inboard fixed connection of protection casing (2) has shell (11), the inside swing joint of shell (11) has turning block (12), the outside fixed connection of turning block (12) has even board (13), the inside fixed connection of shell (11) has crashproof pad (14), a shell (15) is fixedly connected to the inside of the shell (11), an electrorheological body (16) is arranged inside the shell (15), and an electric wire (17) is fixedly connected to the inside of the shell (11).
2. The intelligent protection device for the small-sized pavement cutting machine according to claim 1, characterized in that: photosensitive element (6) mainly comprise shading shell, transparent shell and photo resistance, shading shell fixed connection in the inside of carousel (5), and transparent shell inlays on the surface of shading shell, and photo resistance swing joint is in the inside of shading shell, and the inside fixedly connected with of carousel (5) directly shoots the lamp, directly shoots the specification phase-match of lamp and transparent shell.
3. The intelligent protection device for the small-sized pavement cutting machine according to claim 1, characterized in that: the inside swing joint of carousel (5) has the balancing weight, and the outside fixedly connected with spring of balancing weight is one, and the one end fixed connection that the balancing weight was kept away from to spring one is in the inside of carousel (5), and the specification phase-match of balancing weight and translucent shell, the inboard of protection casing (2) are provided with the cutting piece, and cutting piece fixed connection is in the outside of transmission shaft (4).
4. The intelligent protection device for the small-sized pavement cutting machine according to claim 1, characterized in that: the specification phase-match and the position of the N utmost point (7) and the S utmost point (8) are corresponding, the outside swing joint of connecting rod (9) has spring two, the inside at carousel (5) is kept away from the one end fixed connection of connecting rod (9) is kept away from to spring two, the outside fixedly connected with bar copper of connecting rod (9), the specification phase-match of bar copper and N utmost point (7) and S utmost point (8), the one end fixedly connected with fly leaf of bar copper is kept away from in connecting rod (9), the specification phase-match of fly leaf and balancing weight, single N utmost point (7), the S utmost point (8), connecting rod (9), the bar copper, an electromagnetic induction subassembly is constituteed to the fly leaf, the inside of carousel (5) is equant angularly distributed has three.
5. The intelligent protection device for the small-sized pavement cutting machine according to claim 1, characterized in that: six and equal angular distribution are no less than in the outside of carousel (5) to fixed block (10), and the specification phase-match of fixed block (10) and turning block (12), and turning block (12) are no less than six and equal angular distribution in the inside of shell (11), and the main material of electrorheological body (16) is gypsum, lime, carbon powder and olive oil, links board (13) and casing (15) specification phase-match, links board (13) swing joint in the inside of electrorheological body (16).
6. The intelligent protection device for the small-sized pavement cutting machine according to claim 1, characterized in that: the utility model discloses a lead electric wire, including shell (11), crashproof pad (14), turning block (12), crashproof pad (14), shell (15), the inside swing joint of shell (11) is seted up flutedly, and crashproof pad (14) fixed connection is in the inboard of recess, and turning block (12) swing joint is in the inboard of recess, and the specification phase-match of turning block (12) and crashproof pad (14), and the inside swing joint of casing (15) has and leads electrical pillar, leads electrical pillar and has two.
7. The intelligent protection device for the small-sized pavement cutting machine according to claim 1, characterized in that: the motor (3), the direct reflector lamp and the conductive column are electrically connected with an external power supply, and the photoresistor, the copper bar and the external power supply are electrically connected with the control center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011544655.7A CN112726359A (en) | 2020-12-24 | 2020-12-24 | Intelligent protection device for small-size pavement cutting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011544655.7A CN112726359A (en) | 2020-12-24 | 2020-12-24 | Intelligent protection device for small-size pavement cutting machine |
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| Publication Number | Publication Date |
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| CN112726359A true CN112726359A (en) | 2021-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011544655.7A Pending CN112726359A (en) | 2020-12-24 | 2020-12-24 | Intelligent protection device for small-size pavement cutting machine |
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| CN (1) | CN112726359A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1525010A (en) * | 2003-02-27 | 2004-09-01 | 瓦克建筑设备股份公司 | Ground cutting apparatus |
| US7434889B2 (en) * | 2006-02-20 | 2008-10-14 | Diamond Products, Limited | Self-propelled concrete saw with forward motion speed control system |
| CN111692248A (en) * | 2020-06-22 | 2020-09-22 | 浙江火萌互娱信息技术有限公司 | Stall braking device for transmission shaft of electric wheelchair |
| CN112065665A (en) * | 2020-09-14 | 2020-12-11 | 陈晓娜 | Wind power generation equipment with protection function and taking new energy as power |
| CN112093417A (en) * | 2020-10-27 | 2020-12-18 | 朱仁保 | Belt conveyor speed adjusting device for coal mine |
-
2020
- 2020-12-24 CN CN202011544655.7A patent/CN112726359A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1525010A (en) * | 2003-02-27 | 2004-09-01 | 瓦克建筑设备股份公司 | Ground cutting apparatus |
| US7434889B2 (en) * | 2006-02-20 | 2008-10-14 | Diamond Products, Limited | Self-propelled concrete saw with forward motion speed control system |
| CN111692248A (en) * | 2020-06-22 | 2020-09-22 | 浙江火萌互娱信息技术有限公司 | Stall braking device for transmission shaft of electric wheelchair |
| CN112065665A (en) * | 2020-09-14 | 2020-12-11 | 陈晓娜 | Wind power generation equipment with protection function and taking new energy as power |
| CN112093417A (en) * | 2020-10-27 | 2020-12-18 | 朱仁保 | Belt conveyor speed adjusting device for coal mine |
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Application publication date: 20210430 |