CN110847082B - Movable guardrail used in campus - Google Patents
Movable guardrail used in campus Download PDFInfo
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- CN110847082B CN110847082B CN201911249827.5A CN201911249827A CN110847082B CN 110847082 B CN110847082 B CN 110847082B CN 201911249827 A CN201911249827 A CN 201911249827A CN 110847082 B CN110847082 B CN 110847082B
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F13/00—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions
- E01F13/02—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions free-standing; portable, e.g. for guarding open manholes ; Portable signs or signals specially adapted for fitting to portable barriers
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F13/00—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions
- E01F13/02—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions free-standing; portable, e.g. for guarding open manholes ; Portable signs or signals specially adapted for fitting to portable barriers
- E01F13/022—Pedestrian barriers; Barriers for channelling or controlling crowds
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Abstract
The invention belongs to the technical field of guardrails, and particularly relates to a movable guardrail used in a campus, which comprises a guardrail, a braking mechanism, universal wheels, a first supporting plate and a rear shaft, wherein after a braking plate is in compression joint with the ground, a larger static friction force exists between the braking plate and the ground, so that the temporary guardrail cannot be easily pushed; finally, the temporary guardrail of the invention has the effect that the wheels on the traditional temporary guardrail are braked. In addition, when the temporary guardrail is still pushed by external force after braking, the universal wheels and the rear wheels can still roll, and only the braking plate is abraded, so that the abrasion condition caused by the fact that the wheels slide on the ground in a non-rotating mode in the traditional temporary guardrail is avoided, the condition that the wheels are abraded into a non-circular shape is avoided, and the wheels can enable the temporary guardrail to walk stably; finally, the situation of replacing the universal wheel and the rear wheel of the invention is avoided. The invention has simple structure and better use effect.
Description
Technical Field
The invention belongs to the technical field of guardrails, and particularly relates to a movable guardrail used in a campus.
Background
At present, when a campus is used for rectangular sports activities or large-scale entertainment activities, in order to prevent people from entering a meeting place in an unordered mode, a sidewalk is generally constructed by using movable temporary guardrails to ensure that the people enter the meeting place in an ordered mode. In the case of a conventional movable temporary guard rail, in order to prevent the temporary guard rail from being easily pushed open, the wheels of the temporary guard rail are provided with brake mechanisms. However, after the wheels of the movable temporary guardrail are braked and the temporary guardrail is pushed by a large external force, the wheels on the temporary guardrail slide on the ground in a non-rotating manner, so that the wheels are easily worn for a long time, the wheels are further worn to be in a non-circular shape, and the wheels in the non-circular state are easily bumpy in the rolling process. In order to prevent the wheels on the temporary guard rail from being worn out in a non-circular shape, it is necessary to design a movable temporary guard rail that does not brake the wheels on the temporary guard rail.
The invention designs a movable guardrail used in a campus to solve the problems.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention discloses a movable guardrail used in a campus, which is realized by adopting the following technical scheme.
In the description of the present invention, it should be noted that the terms "inside", "below", "upper" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention usually place when using, and are only used for convenience of description and simplification of description, but do not indicate or imply that the devices or elements indicated must have a specific orientation, be constructed in a specific orientation or be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
The utility model provides a movable guardrail that campus used which characterized in that: the device comprises a protective guard, a base, rear wheels, a braking mechanism, universal wheels, a first supporting plate, a rear shaft, a first belt pulley and a belt, wherein the protective guard is arranged on the upper surface of the base; the lower surface of the base is provided with a braking mechanism; the lower surface of one end of the base is symmetrically provided with two first supporting plates, and the lower surface of the other end of the base is symmetrically provided with two universal wheels; the rear shaft is arranged in the circular holes of the two first supporting plates through bearings, and two ends of the rear shaft penetrate through the two first supporting plates; two rear wheels are symmetrically arranged at two ends of the rear shaft; the first belt pulley is arranged on the rear shaft and is positioned between the two first supporting plates; one end of the belt is mounted on the first belt pulley, and the other end is mounted on the brake mechanism.
The brake mechanism comprises a second fixed plate, a first fixed plate, a rectangular guide cylinder, a third support plate, a second support plate, a one-way clutch, a fixed hole, a first rotating shaft, a second belt pulley, a first pinion, a first telescopic shaft, a first bull gear, a first gear, a connecting plate, a second gear, a second telescopic shaft, a second pinion, a change gear, a second bull gear, a third gear, a second rotating shaft, an adjusting button, a brake plate, a third rack, a first guide block, a first sliding plate, a first spring, a first sliding chute, a first guide groove, a second sliding chute, a second guide groove, a second sliding plate, a second guide block, a second spring, a first rack and a second rack, wherein the first fixed plate, the second support plate, the third support plate, the rectangular guide cylinder and the second fixed plate are all installed on the lower surface of the base; the rectangular guide cylinder is positioned between the first fixing plate and the third supporting plate; the second supporting plate is close to the first supporting plate and is positioned between the third supporting plate and the first supporting plate; the second fixing plate is close to the side surface of the base; the second supporting plate is provided with a through fixing hole; the first telescopic shaft consists of a first rotating sleeve and a first telescopic inner shaft, and the first telescopic inner shaft drives the first rotating sleeve to rotate; a one-way clutch is arranged on the outer circular surface of the first rotating sleeve; the outer circular surface of the one-way clutch is fixedly arranged in the fixing hole of the second supporting plate; a first gear is arranged on the first telescopic inner shaft; the first gearwheel is arranged on the first rotating sleeve and is positioned between the one-way clutch and the first gear; the first rotating shaft is arranged in a circular hole of the second supporting plate through a bearing and is positioned on the lower side of the first telescopic shaft; the second belt pulley and the first pinion are both arranged on the first rotating shaft, and the second belt pulley is positioned between the second support plate and the first pinion; the first small gear is meshed with the first large gear; the second telescopic shaft consists of a second rotating sleeve and a second telescopic inner shaft, and the second telescopic inner shaft drives the second rotating sleeve to rotate; the second rotating sleeve is arranged in a round hole of the third supporting plate through a bearing; the second pinion and the second gear are both arranged on the second telescopic inner shaft, and the second pinion is positioned between the second gear and the second rotating sleeve; the change gear is arranged on the third supporting plate through a shaft; the second rotating shaft is arranged in a circular hole of the third supporting plate through a bearing; the third gear and the second gearwheel are both arranged on the second rotating shaft, and the third gear is positioned between the second gearwheel and the third supporting plate; the change gear is positioned between the second gearwheel and the second telescopic inner shaft; the change gear is meshed with the second gearwheel; the change gear is matched with the second pinion; one end of the connecting plate is arranged at one end of the first telescopic inner shaft far away from the first rotating sleeve, and the other end of the connecting plate is arranged at one end of the second telescopic inner shaft far away from the second rotating sleeve; the adjusting button is arranged in a round hole of the second fixing plate, and two ends of the adjusting button penetrate out of the second fixing plate; one end of the adjusting button is fixedly arranged on the plate surface of the connecting plate far away from the first telescopic inner shaft; the rectangular guide cylinder is provided with a first sliding groove; two first guide grooves are symmetrically formed in two sides of the first sliding groove; two first guide blocks are symmetrically arranged on two sides of one end of the first sliding plate, and a brake plate is arranged at the other end of the first sliding plate; a third rack is arranged on the side surface of the first sliding plate; the first sliding plate is arranged in the first sliding groove of the rectangular guide cylinder in a sliding fit mode; one end of the first spring is arranged on the first sliding plate, the other end of the first spring is arranged on the bottom surface of the first sliding chute, and the first spring is positioned in the first sliding chute of the rectangular guide cylinder; the two first guide blocks are respectively arranged in the two first guide grooves in a sliding fit manner; the third rack slides in the rectangular guide cylinder; the third gear is meshed with the third rack; a through second sliding chute is formed in the surface, away from the base, of the first fixing plate; two second guide grooves are symmetrically formed in two sides of the second sliding groove; two second guide blocks are symmetrically arranged on two sides of the second sliding plate; the second sliding plate is arranged in the second sliding groove of the first fixed plate in a sliding fit manner; the two second guide blocks are respectively arranged in the two second guide grooves in a sliding fit manner; one ends of the two second springs are respectively arranged on the two second guide blocks, and the other ends of the two second springs are respectively arranged on the groove surfaces of the two second guide grooves; the two second springs are respectively positioned in the two second guide grooves; a first rack and a second rack are arranged on the lower surface of the second sliding plate; the first rack and the second rack are distributed along the length direction of the second sliding plate, and a space is reserved between the first rack and the second rack; the first gear is matched with the first rack; the second gear is matched with the second rack.
One end of the belt is arranged on the first belt pulley, and the other end of the belt is arranged on the second belt pulley.
After the adjusting button is pressed, the adjusting button is changed from short to long or from long to short.
As a further improvement of the present technology, the teeth on the first rack, the second rack, the first gear, the second pinion, and the direction change gear are all the same, and for the teeth of the first gear: the teeth of the first gear have the shape of the conventional teeth, and the teeth of the first gear have sharp corners at both ends. The design of the tooth shape is as follows: when the first gear moves along the axial direction to be meshed with the first rack again, the sharp corners on the teeth can enable the teeth on the first gear to be inserted into the gaps between two adjacent teeth on the first rack smoothly, so that the first gear is meshed with the first gear smoothly, the situation that the teeth on the first gear cannot be inserted into the gaps between two adjacent teeth on the first rack is avoided, and the situation that the first gear cannot be meshed with the first rack during the axial movement is further avoided. The design of the teeth also enables the second gear to be smoothly meshed with the second rack when the second gear moves axially. And the design of the teeth also enables the second pinion to be smoothly meshed with the change gear when the second pinion moves axially.
As a further improvement of the present technology, the diameter of the first pinion gear is smaller than the diameter of the first bull gear. The design is that: when the first pinion drives the first telescopic shaft to rotate through the first gearwheel, and the first telescopic shaft drives the first gear to rotate, the torque transmitted to the first gear by the first pinion is increased, and the rotating speed of the first gear is lower than that of the first pinion, so that the first gear achieves the effects of reducing speed and increasing torque.
As a further improvement of the present technology, the diameter of the change gear is smaller than the diameter of the second gearwheel; the diameter of the second pinion gear is smaller than that of the second gearwheel. The design is that: when the second pinion drives the second gearwheel to rotate through the change gear and the second gearwheel drives the third gear to rotate through the second rotating shaft, the torque transmitted to the third gear by the second pinion is increased, and the rotating speed of the third gear is lower than that of the second pinion, so that the third gear achieves the effects of reducing speed and increasing torque.
As a further improvement of the present technology, the first spring is an extension spring; the second spring is an extension spring.
As a further improvement of the present technology, the lower surface of the brake plate has a friction surface. The lower surface of the brake plate needs a friction surface with a large friction coefficient to ensure that the brake plate can generate a large static friction force after contacting with the ground, so that the temporary guardrail can not be easily pushed.
After the adjusting button is pressed, the adjusting button is changed from short to long or from long to short. Similar to the example of the adjustment button function: firstly, the cap of the ball-point pen has the function of lengthening or shortening after being pressed; secondly, after the oil tank cover on the car is pressed, the oil tank cover is pushed open; and after the fuel tank cover is pressed again, the fuel tank cover is closed.
The design of the rear wheel, rear axle, first pulley, belt and second pulley lies in: when the rear wheel moves forwards, the rear wheel rotates anticlockwise; the rear wheel drives the first belt pulley to rotate through the rear shaft, and the first belt pulley drives the second belt pulley to rotate anticlockwise through the belt.
For the braking mechanism: the second belt pulley drives the first pinion to rotate through the first rotating shaft, the first pinion drives the first telescopic shaft to rotate through the first large gear, and the first telescopic shaft drives the first gear to rotate. The design of the one-way clutch is that when the first pinion rotates anticlockwise, the first gearwheel drives the first telescopic shaft to rotate clockwise, and under the one-way action of the one-way clutch, the one-way clutch allows the first telescopic shaft to rotate clockwise, and the one-way clutch limits the first telescopic shaft to rotate anticlockwise. Because one-way clutch restricts first telescopic shaft anticlockwise rotation, so first pinion, first pivot and second belt pulley all can't clockwise rotation, and then make first belt pulley, rear axle and the unable clockwise rotation of rear wheel, also the rear wheel can't retreat the walking promptly. When the change gear drives the third gear to rotate through the second large gear and the second rotating shaft, the third gear drives the third rack to move, and the third rack drives the first sliding plate to slide in the rectangular guide cylinder. For the design of the first guide block, the first guide block slides along with the first sliding plate, the first guide block can ensure that the first sliding plate slides stably in the rectangular guide cylinder, and the first guide block can also prevent the first sliding plate from being separated from the rectangular guide cylinder. For the design of the second guide block, the second guide block slides along with the second sliding plate, the second guide block can ensure that the second sliding plate stably slides in the second sliding groove, and the second guide block can also prevent the second sliding plate from falling off from the first fixing plate. The design with the space between the first rack and the second rack is as follows: the first gear can only drive the first rack to move but not drive the second rack to move, the first rack cannot drive the second gear to rotate, and the second rack can drive the second gear to rotate.
Diversion gear cooperatees with the second pinion, and first gear cooperatees with first rack, and second gear and second rack matched with effect lie in: firstly, when the adjusting button is not pressed and the adjusting button is in a factory state, the first gear and the first rack are in a meshed state, the second gear and the second pinion are positioned on two sides of the second rack, and the second gear and the second pinion are not in a meshed relationship with the second rack. And secondly, after the adjusting button is pressed for the first time, the adjusting button drives the connecting plate to move towards the first telescopic shaft, the first telescopic inner shaft and the second telescopic inner shaft are compressed, a first gear on the first telescopic inner shaft is separated from being meshed with the first rack, a second gear on the second telescopic inner shaft is meshed with the second rack in the process that the first gear is separated from being meshed with the first rack, and a second pinion on the second telescopic inner shaft is meshed with the turning gear. Thirdly, after the adjusting button is pressed for the first time, the first gear can be completely disengaged from the first rack, the second gear can be completely engaged with the second rack, and the second pinion can be completely engaged with the change gear. Fourthly, after the adjusting button is pressed for the second time, the adjusting button drives the connecting plate to move and reset, the connecting plate drives the first telescopic inner shaft and the second telescopic inner shaft to move and reset in the direction of the axial adjusting button, a second gear on the second telescopic inner shaft is disengaged from the second rack, and a second pinion is disengaged from the direction-changing gear; and in the process that the second gear is disengaged from the second rack, the first gear on the first telescopic inner shaft is engaged with the first rack. Fifthly, after the adjusting button is pressed for the second time, the second gear can be completely disengaged from the second rack, the second pinion can be completely disengaged from the change gear, and the first gear can be completely engaged with the first rack.
Effect on the universal wheel: the universal wheels can enable the temporary guardrail to realize steering in the walking process.
The temporary guardrail has the beneficial effects that:
1. the temporary guardrail can achieve the braking effect of the traditional temporary guardrail and prevent the temporary guardrail from being easily pushed. When the temporary guardrail is still pushed after braking, only the braking plate is seriously abraded, and the wheels are not seriously abraded; compared with the cost that the wheel needs to be replaced after being seriously worn in the traditional temporary guardrail, the replacement cost of the brake plate is far lower than the cost of replacing the wheel, and the cost of saving the temporary guardrail and replacing the brake part is achieved.
2. When the temporary guardrail is still pushed by external force after braking, the universal wheels and the rear wheels can still roll, and only the braking plate is abraded, so that the abrasion condition caused by the fact that the wheels slide on the ground in a non-rotating mode after the temporary guardrail is braked is avoided, the condition that the wheels are abraded into a non-circular shape is avoided, and the wheels can enable the temporary guardrail to walk stably.
3. The down-pressure energy required by the braking of the temporary guardrail is stored in the second spring when the rear wheel travels, and the large down-pressure is not required to be specially provided for the braking plate; compared with the traditional temporary guardrail requiring larger external downward pressure during braking, the temporary guardrail is convenient, quick and labor-saving to brake.
Drawings
Fig. 1 is an overall (one) schematic view of a temporary barrier.
Fig. 2 is an overall (second) schematic view of the temporary guard rail.
Fig. 3 is a schematic view of the structure of the bottom surface of the base.
FIG. 4 is a schematic view of the brake mechanism coupled to the belt.
FIG. 5 is a schematic view of a first pulley installation.
FIG. 6 is a schematic view of the one-way clutch and second pulley installation.
FIG. 7 is a schematic view of a belt installation.
FIG. 8 is a schematic view of the connection plate being connected to the first inner telescoping shaft and the second inner telescoping shaft, respectively.
Fig. 9 is a schematic view of the engagement of the first pinion gear and the first bull gear.
Fig. 10 is a schematic view of the third gear and the third rack being engaged.
Fig. 11 is a perspective view of a rectangular guide cylinder.
Fig. 12 is a schematic sectional front view of the first sliding plate mounted to the rectangular guide cylinder.
Fig. 13 is a perspective view of the first fixing plate.
Fig. 14 is a schematic view of the mounting of the first and second racks.
Fig. 15 is an installation perspective view of the second spring and the second guide block.
Fig. 16 is a schematic view of a first gear engaged with a first rack and a second gear engaged with a second rack.
Fig. 17 is a schematic bottom view of fig. 16.
Fig. 18 is an adjustment button installation schematic.
Fig. 19 is a schematic view of a three-dimensional view (a) of the tooth and a plan view (b) of the tooth.
Number designation in the figures: 1. protecting the fence; 2. a base; 3. a rear wheel; 4. a brake mechanism; 6. a universal wheel; 8. a first support plate; 9. a rear axle; 10. a first pulley; 12. a belt; 16. a second fixing plate; 17. a first fixing plate; 18. a rectangular guide cylinder; 19. a third support plate; 20. a second support plate; 21. a one-way clutch; 22. a fixing hole; 23. a first rotating shaft; 24. a second pulley; 25. a first pinion gear; 26. a first telescopic shaft; 27. a first rotating sleeve; 28. a first telescoping inner shaft; 29. a first bull gear; 30. a first gear; 31. a connecting plate; 32. a second gear; 33. a second telescopic shaft; 34. a second rotating sleeve; 35. a second telescoping inner shaft; 36. a second pinion gear; 37. a change gear; 38. a second bull gear; 39. a third gear; 40. a second rotating shaft; 41. an adjustment button; 42. a brake plate; 43. a third rack; 44. a first guide block; 45. a first sliding plate; 46. a first spring; 47. a first chute; 48. a first guide groove; 49. a second chute; 50. a second guide groove; 51. a second sliding plate; 52. a second guide block; 53. a second spring; 54. a first rack; 55. a second rack; 59. teeth; 60. and (4) sharp corners.
Detailed Description
As shown in fig. 1, 3 and 5, it comprises a guard rail 1, a base 2, a rear wheel 3, a braking mechanism 4, a universal wheel 6, a first supporting plate 8, a rear axle 9, a first belt pulley 10 and a belt 12, as shown in fig. 1 and 2, wherein the guard rail 1 is mounted on the upper surface of the base 2; the lower surface of the base 2 is provided with a brake mechanism 4; as shown in fig. 3, two first supporting plates 8 are symmetrically mounted on the lower surface of one end of the base 2, and two universal wheels 6 are symmetrically mounted on the lower surface of the other end; as shown in fig. 4 and 5, the rear shaft 9 is mounted in the circular holes of the two first support plates 8 through bearings, and both ends of the rear shaft 9 penetrate through the two first support plates 8; two rear wheels 3 are symmetrically arranged at two ends of the rear shaft 9; a first belt pulley 10 is mounted on the rear shaft 9, and the first belt pulley 10 is positioned between the two first support plates 8; one end of the belt 12 is mounted on the first pulley 10 and the other end is mounted on the brake mechanism 4.
As shown in fig. 4, 6, 8 and 16, the brake mechanism 4 includes a second fixed plate 16, a first fixed plate 17, a rectangular guide cylinder 18, a third support plate 19, a second support plate 20, a one-way clutch 21, a fixing hole 22, a first rotating shaft 23, a second pulley 24, a first pinion 25, a first telescopic shaft 26, a first bull gear 29, a first gear 30, a connecting plate 31, a second gear 32, a second telescopic shaft 33, a second pinion 36, a change gear 37, a second bull gear 38, a third gear 39, a second rotating shaft 40, an adjusting button 41, a brake plate 42, a third rack 43, a first guide 44, a first sliding plate 45, a first spring 46, a first sliding groove 47, a first guide groove 48, a second sliding groove 49, a second guide groove 50, a second sliding plate 51, a second guide 52, a second spring 53, a first rack 54 and a second rack 55, as shown in fig. 3, wherein the first fixed plate 17, the second support plate 20, the one-way clutch 21, the fixing hole 22, the one-, The second support plate 20, the third support plate 19, the rectangular guide cylinder 18 and the second fixing plate 16 are all mounted on the lower surface of the base 2; the rectangular guide cylinder 18 is positioned between the first fixing plate 17 and the third supporting plate 19; the second support plate 20 is close to the first support plate 8, and the second support plate 20 is positioned between the third support plate 19 and the first support plate 8; the second fixing plate 16 is close to the side surface of the base 2; the second support plate 20 is provided with a through fixing hole 22; as shown in fig. 8 and 16, the first telescopic shaft 26 is composed of a first rotating sleeve 27 and a first telescopic inner shaft 28, and the first telescopic inner shaft 28 drives the first rotating sleeve 27 to rotate; as shown in fig. 8 and 9, the one-way clutch 21 is mounted on the outer circumferential surface of the first rotating sleeve 27; as shown in fig. 6, the outer circumferential surface of the one-way clutch 21 is fixedly installed in the fixing hole 22 of the second support plate 20; as shown in fig. 7 and 9, the first telescopic inner shaft 28 is provided with a first gear 30; a first gearwheel 29 is mounted on the first rotating sleeve 27, and the first gearwheel 29 is located between the one-way clutch 21 and the first gearwheel 30; as shown in fig. 6, the first rotating shaft 23 is bearing-mounted in a circular hole of the second support plate 20, and the first rotating shaft 23 is located at the lower side of the first telescopic shaft 26; the second pulley 24 and the first pinion 25 are both mounted on the first rotating shaft 23, and the second pulley 24 is located between the second support plate 20 and the first pinion 25; as shown in fig. 9, the first pinion gear 25 is engaged with the first bull gear 29; as shown in fig. 8 and 16, the second telescopic shaft 33 is composed of a second rotating sleeve 34 and a second telescopic inner shaft 35, and the second telescopic inner shaft 35 drives the second rotating sleeve 34 to rotate; as shown in fig. 8, the second rotating sleeve 34 is bearing-mounted in the circular hole of the third support plate 19; the second pinion 36 and the second gear 32 are both mounted on the second telescopic inner shaft 35, and the second pinion 36 is located between the second gear 32 and the second rotating sleeve 34; the change gear 37 is mounted on the third support plate 19 through a shaft; the second rotating shaft 40 is mounted in a circular hole of the third support plate 19 through a bearing; the third gear 39 and the second gearwheel 38 are both mounted on the second rotating shaft 40, and the third gear 39 is located between the second gearwheel 38 and the third supporting plate 19; the change gear 37 is located between the second gearwheel 38 and the second inner telescopic shaft 35; the change gear 37 is meshed with the second gearwheel 38; the change gear 37 is engaged with the second pinion gear 36; as shown in fig. 8, one end of the connecting plate 31 is mounted on the end of the first telescopic inner shaft 28 far from the first rotating sleeve 27, and the other end is mounted on the end of the second telescopic inner shaft 35 far from the second rotating sleeve 34; as shown in fig. 9 and 18, the adjusting button 41 is installed in the circular hole of the second fixing plate 16, and both ends of the adjusting button 41 penetrate through the second fixing plate 16; one end of the adjusting button 41 is fixedly arranged on the plate surface of the connecting plate 31 far away from the first telescopic inner shaft 28; as shown in fig. 11, the rectangular guide cylinder 18 has a first slide groove 47 therein; two first guide grooves 48 are symmetrically formed on two sides of the first sliding groove 47; two first guide blocks 44 are symmetrically installed on both sides of one end of the first sliding plate 45, and the brake plate 42 is installed on the other end; a third rack 43 is mounted on the side surface of the first sliding plate 45; as shown in fig. 10, 11 and 12, the first sliding plate 45 is mounted in the first sliding slot 47 of the rectangular guide cylinder 18 by means of sliding fit; one end of the first spring 46 is mounted on the first sliding plate 45, and the other end is mounted on the bottom surface of the first sliding groove 47, and the first spring 46 is located in the first sliding groove 47 of the rectangular guide cylinder 18; the two first guide blocks 44 are respectively installed in the two first guide grooves 48 in a sliding fit manner; the third rack 43 slides in the rectangular guide cylinder 18; the third gear 39 is engaged with the third rack 43; as shown in fig. 13, a through second sliding slot 49 is formed on the plate surface of the first fixing plate 17 away from the base 2; two second guide grooves 50 are symmetrically formed in two sides of the second sliding groove 49; as shown in fig. 14, two second guide blocks 52 are symmetrically installed on both sides of the second sliding plate 51; as shown in fig. 13, 14 and 15, the second sliding plate 51 is mounted in the second slide groove 49 of the first fixed plate 17 by a sliding fit; the two second guide blocks 52 are respectively installed in the two second guide grooves 50 in a sliding fit manner; one ends of the two second springs 53 are respectively mounted on the two second guide blocks 52, and the other ends are respectively mounted on the groove surfaces of the two second guide grooves 50; two second springs 53 are respectively located in the two second guide grooves 50; as shown in fig. 14 and 16, a first rack 54 and a second rack 55 are mounted on the lower surface of the second sliding plate 51; the first rack 54 and the second rack 55 are distributed along the length direction of the second sliding plate 51, as shown in fig. 16 and 17, and a space is formed between the first rack 54 and the second rack 55; the first gear 30 is engaged with the first rack 54; the second gear 32 is engaged with the second rack 55.
As shown in fig. 7, one end of the belt 12 is mounted on the first pulley 10, and the other end is mounted on the second pulley 24.
When the adjustment button 41 is pressed, the adjustment button 41 is changed from short to long or from long to short.
The teeth 59 on the first rack 54, the second rack 55, the first gear 30, the second gear 32, the second pinion 36, and the direction-changing gear 37 are all the same, and as shown in fig. 19 (a), a three-dimensional view of the teeth 59 is shown, and as shown in fig. 19 (b), a plan view of the teeth 59 is shown, and for the teeth 59 of the first gear 30: the teeth 59 of the first gear 30 have not only the shape of conventional teeth 59, but also the teeth 59 of the first gear 30 have sharp corners 60 at both ends. The shape of the tooth 59 is designed in such a way that: when the first gear 30 moves along the axial direction to reengage the first rack 54, the sharp corners 60 on the teeth 59 of the present invention can enable the teeth 59 on the first gear 30 to be smoothly inserted into the gap between two adjacent teeth 59 on the first rack 54, so that the first gear 30 and the first gear 30 are smoothly engaged, thereby avoiding the situation that the teeth 59 on the first gear 30 cannot be inserted into the gap between two adjacent teeth 59 on the first rack 54, and further avoiding the situation that the first gear 30 cannot be engaged with the first rack 54 when moving axially. The design of the teeth 59 also allows the second gear 32 to mesh smoothly with the second rack 55 during axial movement. The design of the teeth 59 also enables the second pinion 36 to mesh smoothly with the direction-changing gear 37 during axial movement.
As shown in fig. 8, the diameter of the first small gear 25 is smaller than that of the first large gear 29. The design is that: when the first pinion 25 drives the first telescopic shaft 26 to rotate through the first gearwheel 29 and the first telescopic shaft 26 drives the first gear 30 to rotate, the torque transmitted to the first gear 30 by the first pinion 25 is increased, the rotating speed of the first gear 30 is lower than that of the first pinion 25, and the first gear 30 achieves the effects of speed reduction and torque increase.
As shown in fig. 8, the diameter of the direction changing gear 37 is smaller than that of the second large gear 38; the second small gear 36 has a smaller diameter than the second large gear 38. The design is that: when the second small gear 36 drives the second large gear 38 to rotate through the direction changing gear 37 and the second large gear 38 drives the third gear 39 to rotate through the second rotating shaft 40, the torque transmitted to the third gear 39 by the second small gear 36 is increased, and the rotating speed of the third gear 39 is lower than that of the second small gear 36, so that the third gear 39 achieves the effects of speed reduction and torque increase.
The first spring 46 is an extension spring; the second spring 53 is an extension spring.
The lower surface of the brake plate 42 has a friction surface. The lower surface of the brake plate 42 requires a friction surface with a large friction coefficient to ensure that the brake plate 42 can generate a large static friction force after contacting the ground, so that the temporary guard rail of the present invention cannot be easily pushed.
The working principle of the invention is as follows: the factory setting of the temporary guardrail is as follows: when the adjustment button 41 is not pressed and the adjustment button 41 is in a factory-shipping state, as shown in fig. 16 and 17, the first gear 30 is engaged with one end of the first rack 54 away from the second rack 55, the second gear 32 and the second pinion 36 are located on both sides of the second rack 55, and neither the second gear 32 nor the second pinion 36 is in an engagement relationship with the second rack 55. The second spring 53 is in a natural state. As shown in fig. 10, the third gear 39 is engaged with the third rack 43, and the brake plate 42 is spaced from the ground.
The rear wheels 3 of the temporary guard rail of the present invention can only travel forward, but cannot travel backward. When the temporary guard rail needs to be moved forward, the user makes the temporary guard rail of the present invention walk forward by pushing the guard rail 1; as shown in fig. 5, when the rear wheel 3 moves forward, the rear wheel 3 rotates counterclockwise at this time.
As shown in fig. 5, when the rear wheel 3 of the temporary guard rail of the present invention walks forward, the rear wheel 3 rotates counterclockwise at this time; the rear wheel 3 drives the first belt pulley 10 to rotate through the rear shaft 9, and the first belt pulley 10 drives the second belt pulley 24 to rotate anticlockwise through the belt 12. The second pulley 24 drives the first pinion 25 to rotate via the first rotating shaft 23, the first pinion 25 drives the first telescopic shaft 26 to rotate clockwise via the first large gear 29, and as shown in fig. 16, the first telescopic shaft 26 drives the first gear 30 to rotate clockwise. The first gear 30 drives the first rack 54 to move away from the second rack 55, the first rack 54 drives the second sliding plate 51 to move, the second guide block 52 and the second rack 55 move along with the second sliding plate 51, and the second spring 53 is stretched. As the first gear 30 continues to toggle the first rack 54, the first gear 30 will toggle to an end of the first rack 54 near the second rack 55, and then continued clockwise rotation of the first gear 30 will maintain the first rack 54 at the position toggled to the maximum distance. Due to the spacing between the first rack 54 and the second rack 55, the first gear 30 does not mesh with the second rack 55. The second rack 55 is positioned to allow the second gear 32 to move into meshing relationship with the second rack 55 when the first gear 30 shifts the first rack 54 to the maximum distance position.
When the temporary guard rail of the present invention is stopped, since the one-way clutch 21 restricts the first telescopic shaft 26 from rotating counterclockwise, the first gear 30 does not rotate counterclockwise, and the first rack 54 is still maintained at a position shifted to the maximum distance by the first gear 30.
When the temporary guard rail of the present invention needs to be braked, a user presses the adjusting button 41 for the first time, the adjusting button 41 drives the connecting plate 31 to move towards the first telescopic shaft 26, the first telescopic inner shaft 28 and the second telescopic inner shaft 35 are compressed, the first gear 30 on the first telescopic inner shaft 28 is disengaged from the first rack 54, the second gear 32 on the second telescopic inner shaft 35 is engaged with the second rack 55, and the second pinion 36 on the second telescopic inner shaft 35 is engaged with the direction-changing gear 37 in the process that the first gear 30 is disengaged from the first rack 54. When the first pressing of the adjustment button 41 is finished, as shown in fig. 8 and 17, the first gear 30 can be completely disengaged from the first rack 54, the second gear 32 can be completely engaged with the second rack 55, and the second pinion 36 can be completely engaged with the direction-changing gear 37.
Since the first gear 30 is disengaged from the first rack 54, the first rack 54 cannot be maintained in the position shifted to the maximum distance by the first gear 30. At this time, the second spring 53 in the stretched state is reset, the second guide block 52 drives the second sliding plate 51 to move and reset, the first rack 54 and the second rack 55 move and reset along with the second sliding plate 51, and the second rack 55 moves and resets to drive the second gear 32 to rotate counterclockwise. The second gear 32 drives the second pinion 36 to rotate anticlockwise through the second telescopic inner shaft 35; the second pinion 36 drives the direction-changing gear 37 to rotate clockwise, as shown in fig. 10 and 12, the direction-changing gear 37 drives the third gear 39 to rotate clockwise via the second gearwheel 38 and the second rotating shaft 40, the third gear 39 drives the third rack 43 to move downward, the third rack 43 drives the first sliding plate 45 to slide downward in the rectangular guide cylinder 18, the braking plate 42 follows the first sliding plate 45 to move downward, and the first spring 46 is stretched. After the braking plate 42 on the first sliding plate 45 contacts with the ground, at this time, the second spring 53 is not reset, so the second rack 55 on the second sliding plate 51 still gives a large pulling power to the second gear 32, and after a series of transmissions, the second gear 32 makes the third gear 39 still give a large pulling power to the third rack 43; therefore, after the brake plate 42 is contacted with the ground, the third rack 43 and the first sliding plate 45 still have larger downward pressure, so that larger pressure exists between the brake plate 42 and the ground, larger static friction force exists between the brake plate 42 and the ground, and the temporary guardrail can not be easily pushed; finally, the temporary guardrail of the invention has the effect that the wheels on the traditional temporary guardrail are braked.
When the temporary guard rail of the present invention is not required to be braked, the user presses the adjustment button 41 a second time. When the adjusting button 41 is pressed for the second time, the adjusting button 41 drives the connecting plate 31 to move and reset, the connecting plate 31 drives the first telescopic inner shaft 28 and the second telescopic inner shaft 35 to move and reset towards the direction of the adjusting button 41, the second gear 32 on the second telescopic inner shaft 35 is disengaged from the second rack 55, and the second pinion 36 is disengaged from the change gear 37; during disengagement of the second gear 32 from the second rack 55, the first gear 30 on the first telescoping inner shaft 28 engages the first rack 54. When the adjusting button 41 is pressed for the second time, the second gear 32 can be completely disengaged from the second rack 55, the second pinion 36 can be completely disengaged from the direction-changing gear 37, and the first gear 30 can be completely engaged with the first rack 54. After the first gear 30 is completely engaged with the first rack 54, since the one-way clutch 21 prevents the first gear 30 from rotating counterclockwise, the first rack 54 cannot move further and return, and the second spring 53 is extended to some extent. When the second pinion 36 is disengaged from the direction change gear 37, the third gear 39 no longer provides a downward driving force to the third rack 43, and then the first sliding plate 45 is moved and reset by the reset action of the first spring 46, and the brake plate 42 is moved and reset along with the first sliding plate 45.
In conclusion, the invention has the main beneficial effects that: after the braking plate is in compression joint with the ground, a larger static friction force exists between the braking plate and the ground, so that the temporary guardrail can not be easily pushed; finally, the temporary guardrail of the invention has the effect that the wheels on the traditional temporary guardrail are braked. In addition, when the temporary guardrail is still pushed by external force after braking, the universal wheels and the rear wheels can still roll, and only the braking plate is abraded, so that the abrasion condition caused by the fact that the wheels slide on the ground in a non-rotating mode in the traditional temporary guardrail is avoided, the condition that the wheels are abraded into a non-circular shape is avoided, and the wheels can enable the temporary guardrail to walk stably; finally, the situation of replacing the universal wheel and the rear wheel of the invention is avoided; compared with the cost of the wheel to be replaced after the wheel is seriously worn, the replacement cost of the brake plate after the wheel is seriously worn is far lower than the cost of replacing the wheel, and the cost of replacing the brake part of the temporary guardrail is saved.
Claims (2)
1. The utility model provides a movable guardrail that campus used which characterized in that: the device comprises a protective guard, a base, rear wheels, a braking mechanism, universal wheels, a first supporting plate, a rear shaft, a first belt pulley and a belt, wherein the protective guard is arranged on the upper surface of the base; the lower surface of the base is provided with a braking mechanism; the lower surface of one end of the base is symmetrically provided with two first supporting plates, and the lower surface of the other end of the base is symmetrically provided with two universal wheels; the rear shaft is arranged in the circular holes of the two first supporting plates through bearings, and two ends of the rear shaft penetrate through the two first supporting plates; two rear wheels are symmetrically arranged at two ends of the rear shaft; the first belt pulley is arranged on the rear shaft and is positioned between the two first supporting plates; one end of the belt is arranged on the first belt pulley, and the other end of the belt is arranged on the braking mechanism;
the brake mechanism comprises a second fixed plate, a first fixed plate, a rectangular guide cylinder, a third support plate, a second support plate, a one-way clutch, a fixed hole, a first rotating shaft, a second belt pulley, a first pinion, a first telescopic shaft, a first bull gear, a first gear, a connecting plate, a second gear, a second telescopic shaft, a second pinion, a change gear, a second bull gear, a third gear, a second rotating shaft, an adjusting button, a brake plate, a third rack, a first guide block, a first sliding plate, a first spring, a first sliding chute, a first guide groove, a second sliding chute, a second guide groove, a second sliding plate, a second guide block, a second spring, a first rack and a second rack, wherein the first fixed plate, the second support plate, the third support plate, the rectangular guide cylinder and the second fixed plate are all installed on the lower surface of the base; the rectangular guide cylinder is positioned between the first fixing plate and the third supporting plate; the second supporting plate is close to the first supporting plate and is positioned between the third supporting plate and the first supporting plate; the second fixing plate is close to the side surface of the base; the second supporting plate is provided with a through fixing hole; the first telescopic shaft consists of a first rotating sleeve and a first telescopic inner shaft, and the first telescopic inner shaft drives the first rotating sleeve to rotate; a one-way clutch is arranged on the outer circular surface of the first rotating sleeve; the outer circular surface of the one-way clutch is fixedly arranged in the fixing hole of the second supporting plate; a first gear is arranged on the first telescopic inner shaft; the first gearwheel is arranged on the first rotating sleeve and is positioned between the one-way clutch and the first gear; the first rotating shaft is arranged in a circular hole of the second supporting plate through a bearing and is positioned on the lower side of the first telescopic shaft; the second belt pulley and the first pinion are both arranged on the first rotating shaft, and the second belt pulley is positioned between the second support plate and the first pinion; the first small gear is meshed with the first large gear; the second telescopic shaft consists of a second rotating sleeve and a second telescopic inner shaft, and the second telescopic inner shaft drives the second rotating sleeve to rotate; the second rotating sleeve is arranged in a round hole of the third supporting plate through a bearing; the second pinion and the second gear are both arranged on the second telescopic inner shaft, and the second pinion is positioned between the second gear and the second rotating sleeve; the change gear is arranged on the third supporting plate through a shaft; the second rotating shaft is arranged in a circular hole of the third supporting plate through a bearing; the third gear and the second gearwheel are both arranged on the second rotating shaft, and the third gear is positioned between the second gearwheel and the third supporting plate; the change gear is positioned between the second gearwheel and the second telescopic inner shaft; the change gear is meshed with the second gearwheel; the change gear is matched with the second pinion; one end of the connecting plate is arranged at one end of the first telescopic inner shaft far away from the first rotating sleeve, and the other end of the connecting plate is arranged at one end of the second telescopic inner shaft far away from the second rotating sleeve; the adjusting button is arranged in a round hole of the second fixing plate, and two ends of the adjusting button penetrate out of the second fixing plate; one end of the adjusting button is fixedly arranged on the plate surface of the connecting plate far away from the first telescopic inner shaft; the rectangular guide cylinder is provided with a first sliding groove; two first guide grooves are symmetrically formed in two sides of the first sliding groove; two first guide blocks are symmetrically arranged on two sides of one end of the first sliding plate, and a brake plate is arranged at the other end of the first sliding plate; a third rack is arranged on the side surface of the first sliding plate; the first sliding plate is arranged in the first sliding groove of the rectangular guide cylinder in a sliding fit mode; one end of the first spring is arranged on the first sliding plate, the other end of the first spring is arranged on the bottom surface of the first sliding chute, and the first spring is positioned in the first sliding chute of the rectangular guide cylinder; the two first guide blocks are respectively arranged in the two first guide grooves in a sliding fit manner; the third rack slides in the rectangular guide cylinder; the third gear is meshed with the third rack; a through second sliding chute is formed in the surface, away from the base, of the first fixing plate; two second guide grooves are symmetrically formed in two sides of the second sliding groove; two second guide blocks are symmetrically arranged on two sides of the second sliding plate; the second sliding plate is arranged in the second sliding groove of the first fixed plate in a sliding fit manner; the two second guide blocks are respectively arranged in the two second guide grooves in a sliding fit manner; one ends of the two second springs are respectively arranged on the two second guide blocks, and the other ends of the two second springs are respectively arranged on the groove surfaces of the two second guide grooves; the two second springs are respectively positioned in the two second guide grooves; a first rack and a second rack are arranged on the lower surface of the second sliding plate; the first rack and the second rack are distributed along the length direction of the second sliding plate, and a space is reserved between the first rack and the second rack; the first gear is matched with the first rack; the second gear is matched with the second rack;
one end of the belt is arranged on the first belt pulley, and the other end of the belt is arranged on the second belt pulley;
after the adjusting button is pressed, the adjusting button is changed from short to long or from long to short;
the teeth on the first rack, the second rack, the first gear, the second pinion and the change gear are all the same, and for the teeth of the first gear: the teeth of the first gear have the shape of the traditional teeth, and two ends of the teeth of the first gear are provided with sharp corners;
the diameter of the first small gear is smaller than that of the first big gear;
the diameter of the change gear is smaller than that of the second gearwheel; the diameter of the second small gear is smaller than that of the second large gear;
the lower surface of the brake plate has a friction surface.
2. The movable guardrail for the campus of claim 1, wherein: the first spring is an extension spring; the second spring is an extension spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911249827.5A CN110847082B (en) | 2018-10-15 | 2018-10-15 | Movable guardrail used in campus |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911249827.5A CN110847082B (en) | 2018-10-15 | 2018-10-15 | Movable guardrail used in campus |
| CN201811196241.2A CN109083498B (en) | 2018-10-15 | 2018-10-15 | A remove guardrail for campus |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811196241.2A Division CN109083498B (en) | 2018-10-15 | 2018-10-15 | A remove guardrail for campus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110847082A CN110847082A (en) | 2020-02-28 |
| CN110847082B true CN110847082B (en) | 2021-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911249827.5A Active CN110847082B (en) | 2018-10-15 | 2018-10-15 | Movable guardrail used in campus |
| CN201811196241.2A Active CN109083498B (en) | 2018-10-15 | 2018-10-15 | A remove guardrail for campus |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811196241.2A Active CN109083498B (en) | 2018-10-15 | 2018-10-15 | A remove guardrail for campus |
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| Country | Link |
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| CN (2) | CN110847082B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111593943B (en) * | 2020-06-01 | 2021-05-04 | 河北安电电力器材有限公司 | Protective fence equipment for engineering |
Family Cites Families (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2257468A1 (en) * | 1974-01-16 | 1975-08-08 | Distribution Cie Et | Road vehicle friction brake assembly - is lowered by linkages to engage ground and maintain vehicle course |
| US3994369A (en) * | 1975-05-08 | 1976-11-30 | Lawrence Peska Associates, Inc. | Emergency vehicle brake |
| FR2580147A1 (en) * | 1985-04-11 | 1986-10-17 | Granier Philippe | Machine for planting in continuous motion |
| CN1049478A (en) * | 1989-08-10 | 1991-02-27 | 陈梁 | Inertia automatic braking and device |
| BE1009727A6 (en) * | 1995-11-08 | 1997-07-01 | Bay Victor | Safety brake for lorries |
| CN2280032Y (en) * | 1996-11-28 | 1998-04-29 | 吴献堂 | Auxiliary arrangement for emergency braking |
| AUPR387001A0 (en) * | 2001-03-21 | 2001-04-12 | Hilltrolley Pty Ltd | Brake for a vehicle |
| KR20030012947A (en) * | 2001-08-06 | 2003-02-14 | 최정석 | Auxiliary braking system for iced road |
| CN2617640Y (en) * | 2003-03-11 | 2004-05-26 | 翟廷峰 | Emergency braker |
| GB2470229A (en) * | 2009-05-15 | 2010-11-17 | Bndean Abdulkadir Omer | Additional vehicle braking system |
| US20110198161A1 (en) * | 2010-02-12 | 2011-08-18 | Louis Lomazzo | Master braking system and method therefor |
| CN201863823U (en) * | 2010-11-17 | 2011-06-15 | 王淦生 | Motor vehicle auxiliary brake device |
| CN102632766A (en) * | 2012-03-21 | 2012-08-15 | 阳江市飞轮金属制品有限公司 | Braking caster of adjusting brake |
| US9067675B2 (en) * | 2013-01-08 | 2015-06-30 | The Boeing Company | Airplane emergency supplemental braking system and method |
| CN104724085A (en) * | 2013-12-18 | 2015-06-24 | 李胜群 | Automobile emergency braking plate |
| CN104442750A (en) * | 2014-11-24 | 2015-03-25 | 于祺 | Frictional resistance roll of external brake of motor vehicle |
| CN104973098A (en) * | 2015-07-15 | 2015-10-14 | 徐州市旭松新型材料有限公司 | Trolley with braking devices and weighing mechanism |
| CN205172153U (en) * | 2015-12-02 | 2016-04-20 | 广州市第二市政工程有限公司 | Movable rail |
| CN206520598U (en) * | 2016-12-09 | 2017-09-26 | 山东交通学院 | A kind of self-boosting type automobile emergent brake device |
| CN207314999U (en) * | 2017-04-21 | 2018-05-04 | 广东可为栅栏有限公司 | A kind of construction fence |
| CN107458438A (en) * | 2017-09-12 | 2017-12-12 | 王春江 | A kind of multistage spacing water-based paint can of compression-resistant type positions controllable dolly |
| CN207646653U (en) * | 2017-11-29 | 2018-07-24 | 宁波经济技术开发区物流发展有限公司 | Vehicle guides isolating device |
| CN107984973A (en) * | 2017-12-18 | 2018-05-04 | 常熟市邦知光电科技有限公司 | One kind is based on gear-driven Three-wheel type sick bed universal wheel |
| CN108331447B (en) * | 2018-01-19 | 2020-11-17 | 中国建筑第七工程局有限公司 | A guardrail for slope road surface construction protection convenient to dismantle |
| CN108640037A (en) * | 2018-05-06 | 2018-10-12 | 张晓双 | A kind of rapid wear building materials handler |
| CN112655586A (en) * | 2018-05-29 | 2021-04-16 | 丁杨洋 | Prevent overheated pet drying device |
-
2018
- 2018-10-15 CN CN201911249827.5A patent/CN110847082B/en active Active
- 2018-10-15 CN CN201811196241.2A patent/CN109083498B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109083498B (en) | 2020-01-24 |
| CN109083498A (en) | 2018-12-25 |
| CN110847082A (en) | 2020-02-28 |
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Denomination of invention: A kind of mobile guardrail for campus Effective date of registration: 20221025 Granted publication date: 20210525 Pledgee: Zhejiang Tailong Commercial Bank Co.,Ltd. Hangzhou Fuyang sub branch Pledgor: HANGZHOU FUYANG FEISHANG DECORATION ENGINEERING Co.,Ltd. Registration number: Y2022980019538 |
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Date of cancellation: 20230725 Granted publication date: 20210525 Pledgee: Zhejiang Tailong Commercial Bank Co.,Ltd. Hangzhou Fuyang sub branch Pledgor: HANGZHOU FUYANG FEISHANG DECORATION ENGINEERING Co.,Ltd. Registration number: Y2022980019538 |
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