CN114541303B - Guardrail for municipal administration - Google Patents
Guardrail for municipal administration Download PDFInfo
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- CN114541303B CN114541303B CN202210366433.3A CN202210366433A CN114541303B CN 114541303 B CN114541303 B CN 114541303B CN 202210366433 A CN202210366433 A CN 202210366433A CN 114541303 B CN114541303 B CN 114541303B
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- middle rod
- inner cavity
- rod
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- 230000005540 biological transmission Effects 0.000 claims abstract description 18
- 230000007246 mechanism Effects 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 17
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 230000002265 prevention Effects 0.000 description 8
- 229910001018 Cast iron Inorganic materials 0.000 description 7
- 238000001125 extrusion Methods 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/006—Lane control by movable lane separating barriers, e.g. shiftable barriers, retractable kerbs ; Apparatus or barriers specially adapted therefor, e.g. wheeled 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
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/02—Continuous barriers extending along roads or between traffic lanes
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
Abstract
The invention discloses a municipal guardrail, which comprises a base, upright posts and a railing, wherein the railing is connected with the base through the upright posts; at least three transmission mechanisms are arranged in the inner cavity of the base, and the lower end of each transmission mechanism is respectively provided with a universal wheel; all the transmission mechanisms have the same structure, and each transmission mechanism comprises a first lever, a second lever, a middle rod, a third lever and a friction plate; the first lever, the second lever and the middle rod are sequentially hinged end to end, and the middle part of the first lever and the middle part of the second lever are both rotationally connected in the corresponding inner cavity; the lower end of the first lever is rotationally connected with a universal wheel, and the universal wheel is positioned at a notch at the lower end of the base. The invention provides the mobility of the guardrail, can be converted into a movable guardrail or a fixed guardrail according to the requirements, has convenient and quick conversion process, and is particularly suitable for the route conversion requirements of municipal roads.
Description
Technical Field
The invention relates to the technical field of road facilities, in particular to a municipal guardrail.
Background
Guardrails are widely used in the field of municipal facilities such as traffic roads and municipal facilities. The guardrail is various, and general structure is little different, all includes base and railing. The types of foundation are many, such as cast iron foundation, cement pier foundation, stainless steel foundation, etc., where the cement pier foundation is the heaviest, and usually a crane is used to complete the movement and installation. The cast iron base is heavy, but manual carrying is relatively laborious and inconvenient to move. The stainless steel base is the lightest and easy to carry. In order to improve the rollover resistance of the base, the cast iron base and the stainless steel base are usually fixed on the ground by using expansion bolts, wherein the cast iron base is heavy and can be fixed without adopting the expansion bolts according to the situation.
Under the condition that a fixed guardrail needs to be changed into a movable guardrail, the cast iron base is most suitable, and the cast iron base is strong in rollover resistance and meanwhile has certain mobility. However, the existing cast iron base has no improved structure, the problem of heavy weight cannot be solved in the aspect of movable performance, and the moving process is still time-consuming and labor-consuming and has poor maneuverability.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a municipal guardrail, which comprises a base, upright posts and a railing, wherein the railing is connected with the base through the upright posts; at least three transmission mechanisms are arranged in the inner cavity of the base, and the lower end of each transmission mechanism is respectively provided with a universal wheel; all the transmission mechanisms have the same structure, and each transmission mechanism comprises a first lever, a second lever, a middle rod, a third lever and a friction plate; the first lever, the second lever and the middle rod are sequentially hinged end to end, and the middle part of the first lever and the middle part of the second lever are both rotationally connected in the corresponding inner cavity; the lower end of the first lever is rotationally connected with a universal wheel, and the universal wheel is positioned at a notch at the lower end of the base; the middle rod is vertically and rollingly connected in the corresponding inner cavity; the cross section of the middle rod is square, the friction plate is opposite to one side face of the middle rod, one end of the third lever is hinged with the friction plate, the third lever is hinged in the corresponding inner cavity, the friction plate is extruded on the corresponding side face of the middle rod and drives the middle rod to move downwards through upwards swinging the other end of the third lever, and then the corresponding universal wheel is supported on the ground to jack up and suspend the base.
The beneficial effects of this equipment are embodied in: under the condition of no movement, the universal wheels are in contact with the ground, and the base is placed on the ground and is not different from the existing fixed base. When the third lever is required to move, the third lever is lifted upwards, the friction plate is closely attached to one side face of the middle rod, the third lever is lifted upwards continuously, and the friction plate extrudes the middle rod and drives the middle rod to move downwards. The middle rod drives the second lever to be linked with the first lever, so that the universal wheel at the lower end of the first lever moves downwards to be supported on the ground. According to the method, all universal wheels are supported on the ground, so that the base is jacked up and suspended. The base can move towards any direction after being suspended, so that the problem that the base is heavy and inconvenient to move is solved. The transmission mechanism of the base can enable the base to have a fixed mode and a moving mode, the interception direction of the railing can be adjusted according to actual conditions, and the base is particularly suitable for the condition of frequently changing roads.
In addition, the third lever is lifted upwards, lifting moment is applied to the base, the moment required by the universal wheel to swing downwards to jack the base is reduced, the moment required by lifting the third lever is reduced, and the effect of saving power is achieved.
Preferably, the rotating shaft connected with the base by the first lever and the rotating shaft connected with the base by the second lever are respectively provided with a first torsion spring, and the first torsion spring drives the first lever and the second lever to swing so as to reduce the moment required by jacking up the base. The torsional moment of the first torsion spring assists the first lever and the second lever to swing, the direction of the auxiliary swing is the direction of the downward swing of the universal wheel, the moment required by lifting the third lever is further reduced, and the labor is saved.
Preferably, one end of the first lever and two ends of the second lever are provided with movable holes for hinging. The movable hole compensates for displacement of the intermediate lever, the first lever and the second lever in other directions generated in the swinging process, so that the hinging relationship among the intermediate lever, the first lever and the second lever is balanced.
Preferably, each inner cavity is internally provided with a falling prevention plate parallel to the corresponding middle rod, and one side surface of the middle rod is provided with a plurality of first teeth which are upwards inclined; one side surface of the anti-falling plate is provided with a second tooth which is corresponding to the first tooth and is inclined downwards; the inner cavity is provided with a notch for accommodating the anti-falling plate, and the anti-falling plate can horizontally move in the notch; the notch is internally provided with a spring for pushing the anti-falling plate to tightly lean against the middle rod, and the first tooth is in contact engagement with the second tooth, so that the middle rod is prevented from moving upwards. Because lifting the third lever once can not lower the universal wheel to the lowest point, namely the base can not be jacked up, the lifting of the third lever is needed to be repeated for a plurality of times, and after lifting the third lever upwards each time, the falling prevention plate keeps the universal wheel from being pressed by the gravity of the base to be in situ, and keeps the effect of unidirectional movement of the middle rod downwards.
Preferably, rollers are respectively arranged between the plurality of side surfaces of the middle rod and the inner cavity. The roller is connected between the middle rod and the inner wall of the inner cavity in a rolling way, so that the friction resistance of the middle rod moving in the inner cavity is greatly reduced.
Preferably, a friction plate is provided with a friction-increasing pad layer on the side opposite to the intermediate lever. The cushion layer plays a role of skid resistance, so that the universal wheel can be effectively driven to swing downwards by swinging of the third lever every time.
Preferably, an expansion joint is arranged between the friction plate and the third lever; the telescopic joint comprises a cylinder body with a blind hole at one end and a locking assembly arranged in the blind hole of the cylinder body, and the other end of the cylinder body is hinged with the friction plate; the third lever is hollow, and one end of the third lever is provided with an extension rod which is connected with the blind hole in a sliding way; the inside of the extension rod is provided with a slidable mandrel, two ends of the mandrel respectively extend into a blind hole of the expansion joint and a hollow cavity of the third lever, one end of the mandrel positioned in the blind hole is provided with a touch head, and the touch head is pushed by the mandrel to squeeze the locking assembly, so that the locking assembly clamps the extension rod and the third lever and the expansion joint synchronously move; the base is provided with an opening communicated with the inner cavity for exposing the other end of the third lever.
Preferably, the locking assembly comprises an "L" shaped hook; the two L-shaped hooks are rotatably connected in the blind hole, the two L-shaped hooks are distributed on two sides of the extension rod, and the side wall of the extension rod is provided with a clamping groove corresponding to a barb at one end of each L-shaped hook; the other ends of the two L-shaped hook bodies are simultaneously extruded by the touch head, so that the two barbs are correspondingly clamped into the two clamping grooves one by one; the rotation axis of each L-shaped hook body is provided with a second torsion spring for driving the barb to separate from the clamping groove.
Working principle of expansion joint: the third lever stretches into the blind hole of the barrel, one end of the mandrel is tightly propped against, the touch head extrudes two L-shaped hook bodies, and the two L-shaped hook bodies overcome the second torsion spring to swing by a certain angle, so that the two barbs are clamped into the two clamping grooves in a one-to-one correspondence manner. After the locking component is locked, the extension rod and the expansion joint are relatively static. The specific operation method is that the straight rod is inserted into the third lever, so that the locking component is locked, the expansion joint cannot slide along the extension rod in the process of lifting the straight rod, the friction force generated by the friction plate extruding the middle rod is enough to drive the middle rod to move downwards, and the phenomenon of slipping cannot occur. During the extrusion process, the friction plate and the cushion layer can generate certain deformation to adapt to the distance change between the friction plate and the middle rod. In the process of pressing down the straight rod to reset the friction plate, the straight rod needs to be withdrawn a distance, so that the two barbs are withdrawn from the two clamping grooves in a one-to-one correspondence manner. The telescopic joint slides towards the direction of the extension rod due to the extrusion of the friction plate, namely, the distance between the cushion layer and the middle rod is increased, so that the friction force between the cushion layer and the middle rod is greatly reduced, the whole pressing process of pressing down the straight rod is very easy, and further labor is saved.
Preferably, the side wall of the base is provided with unlocking holes corresponding to all the anti-falling plates one by one, and each middle rod is provided with a through hole corresponding to the corresponding unlocking hole. The base is converted into a fixed mode from a moving mode, a straight rod is required to be inserted into the unlocking hole, the second tooth of the anti-falling plate is pushed to be separated from the first tooth of the middle rod through the through hole, the middle rod is unlocked and moves upwards, the universal wheel is reset, and the base is placed on the ground again. The mode conversion method is simple, and time and labor are saved.
Preferably, the base is provided with a plurality of ear panels extending in a horizontal direction, all of the ear panels being evenly distributed along the circumference of the base. According to the requirement, the lug plate is fixed on the ground through the expansion bolts, so that the rollover prevention capability of the base is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.
Fig. 1 is a schematic structural view of the present embodiment;
FIG. 2 is a top view of the base of FIG. 1;
FIG. 3 is a cross-sectional view of A-A of FIG. 2;
fig. 4 is a schematic view of the internal structure of the expansion joint in fig. 3.
In the drawing, a base 1, an upright post 2, a railing 3, an ear plate 4, a first lever 5, a second lever 6, a middle lever 7, a third lever 8, a friction plate 9, an inner cavity 10, a movable hole 11, a first torsion spring 12, a notch 13, a universal wheel 14, a roller 15, a falling prevention plate 16, a first tooth 17, a second tooth 18, a spring 19, a cushion layer 20, an unlocking hole 21, an expansion joint 22, a cylinder 23, a blind hole 24, an extension rod 25, a mandrel 26, a touch head 27, an L-shaped hook 28, a clamping groove 29, a barb 30 and a second torsion spring 31.
Detailed Description
Embodiments of the technical scheme of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present invention, and thus are merely examples, and are not intended to limit the scope of the present invention.
It is noted that unless otherwise indicated, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.
As shown in fig. 1 and 2, the embodiment provides a guardrail for municipal administration, which comprises a base 1, an upright post 2 and a railing 3, wherein the railing 3 is connected with the base 1 through the upright post 2. Wherein, the base 1 is provided with four earplates 4 extending along the horizontal direction, and all the earplates 4 are uniformly distributed along the circumference of the base 1. According to the requirement, the lug plate 4 is fixed on the ground through expansion bolts, so that the rollover prevention capability of the base 1 is improved. In general, a base 1, a column 2 and a rail 3 form a guardrail unit, and a plurality of guardrail units are sequentially connected to form a complete guardrail, and the length of the guardrail is selected according to requirements. In this embodiment, the base 1 has a fixed mode and a moving mode, and the moving mode can move along the ground, and the fixed mode is placed on the ground, which is different from the conventional guardrail base 1. The base 1 has a fixed mode and a moving mode, and can adjust the interception direction of the railing 3 according to actual conditions, and is particularly suitable for the condition of frequently changing roads. The specific structure of the base 1 is as follows:
as shown in fig. 2 and 3, three transmission mechanisms are arranged in the inner cavity 10 of the base 1, and a universal wheel 14 is respectively arranged at the lower end of each transmission mechanism. The three transmission mechanisms have the same structure, and the specific structure of each transmission mechanism is as follows:
the transmission mechanism comprises a first lever 5, a second lever 6, an intermediate lever 7, a third lever 8 and a friction plate 9. The first lever 5, the second lever 6 and the middle rod 7 are hinged end to end in sequence, and the middle part of the first lever 5 and the middle part of the second lever 6 are both rotatably connected in the corresponding inner cavity 10. Specifically, one end of the first lever 5 and both ends of the second lever 6 are provided with movable holes 11 for hinge connection. The movable hole 11 compensates for displacement of the intermediate lever 7, the first lever 5, and the second lever 6 in other directions generated during the swing so that the hinge relationship among the intermediate lever 7, the first lever 5, and the second lever 6 is balanced. In addition, a rotation shaft of the first lever 5 connected to the base 1 and a rotation shaft of the second lever 6 connected to the base 1 are respectively provided with a first torsion spring 12. The middle part of the lower end face of the base 1 is provided with a notch 13 extending upwards, the lower end of the first lever 5 is rotationally connected with a universal wheel 14, and the universal wheel 14 is positioned at the notch 13 at the lower end of the base 1. The middle rod 7 is vertically and rollingly connected in the corresponding inner cavity 10, and in particular, rollers 15 are respectively arranged between a plurality of sides of the middle rod 7 and the inner cavity 10. The rolling connection between the intermediate rod 7 and the inner wall of the inner cavity 10 by the roller 15 greatly reduces the friction resistance of the intermediate rod 7 moving in the inner cavity 10. The cross section of the middle rod 7 is square, the friction plate 9 is opposite to one side surface of the middle rod 7, one end of the third lever 8 is hinged with the friction plate 9, the third lever 8 is hinged in the corresponding inner cavity 10, and the friction plate 9 is extruded on the corresponding side surface of the middle rod 7 and drives the middle rod 7 to move downwards by swinging the other end of the third lever 8 upwards, so that the corresponding universal wheel 14 is supported on the ground to jack up and suspend the base 1. Further, the first lever 5 and the second lever 6 are driven to swing by the first torsion spring 12 to reduce the moment required for jacking up the base 1. The torsion moment of the first torsion spring 12 assists the first lever 5 and the second lever 6 to swing, the direction of the auxiliary swing is the direction of the universal wheel 14 swinging downwards, the moment required for lifting the third lever 8 is further reduced, and more labor is saved.
Because lifting the third lever 8 once can not lower the universal wheel 14 to the lowest point, i.e. can not jack up the base 1, the lifting of the third lever 8 is required to be repeated for a plurality of times, after lifting the third lever 8 upwards each time, in order to put the base 1 down, in this embodiment, each inner cavity 10 is provided with an anti-falling plate 16 parallel to the corresponding middle rod 7, and one side surface of the middle rod 7 is provided with a plurality of first teeth 17 which are upwards inclined; one side surface of the falling prevention plate 16 is provided with a second tooth 18 which is corresponding to the first tooth 17 and is inclined downwards; the inner cavity 10 is provided with a notch 13 for accommodating a falling protection plate 16, and the falling protection plate 16 can horizontally move in the notch 13; a spring 19 for pushing the fall-preventing plate 16 against the intermediate lever 7 is arranged in the notch 13, and the first tooth 17 is in contact engagement with the second tooth 18, so that the intermediate lever 7 is prevented from moving upwards. The falling prevention plate 16 keeps the universal wheel 14 from being pressed by the gravity of the base 1 and is in place, and the falling prevention plate 16 keeps the function of the downward unidirectional movement of the middle rod 7. Further, a friction plate 9 is provided with a friction-increasing pad layer 20 on a surface thereof facing the intermediate lever 7. The cushion layer 20 plays a role of anti-slip, so that each swinging of the third lever 8 can effectively drive the universal wheel 14 to swing downwards. And the side wall of the base 1 is provided with unlocking holes 21 corresponding to all the anti-falling plates 16 one by one, and each intermediate rod 7 is provided with a through hole corresponding to the corresponding unlocking hole 21. The base 1 is converted from the moving mode to the fixed mode, a straight rod is needed to be inserted into the unlocking hole 21, the second teeth 18 of the anti-falling plate 16 are pushed to be separated from the first teeth 17 of the middle rod 7 through the through hole, the middle rod 7 is unlocked and moves upwards, the universal wheel 14 is reset, and the base 1 is placed on the ground again. The mode conversion method is simple, and time and labor are saved.
As shown in fig. 4, in this embodiment, an expansion joint 22 is provided between the friction plate 9 and the third lever 8; the telescopic joint 22 comprises a cylinder 23 with a blind hole 24 at one end and a locking component arranged in the blind hole 24 of the cylinder 23, and the other end of the cylinder 23 is hinged with the friction plate 9; the third lever 8 is hollow, and an extension rod 25 slidably connected to the blind hole 24 is provided at one end of the third lever 8; a slidable mandrel 26 is arranged in the extension rod 25, two ends of the mandrel 26 respectively extend into the blind hole 24 of the expansion joint 22 and the hollow cavity of the third lever 8, one end of the mandrel 26 positioned in the blind hole 24 is provided with a touch head 27, and the touch head 27 is pushed by the mandrel 26 to squeeze the locking assembly, so that the locking assembly clamps the extension rod 25 and the third lever 8 and the expansion joint 22 synchronously move; the base 1 is provided with an opening communicating with the cavity 10 for exposing the other end of the third lever 8. Further, the locking assembly includes an "L" shaped hook 28; the two L-shaped hook bodies 28 are arranged, the two L-shaped hook bodies 28 are rotatably connected in the blind hole 24, the two L-shaped hook bodies 28 are distributed on two sides of the extension rod 25, and the side wall of the extension rod 25 is provided with a clamping groove 29 corresponding to a barb 30 at one end of each L-shaped hook body 28; the other ends of the two L-shaped hook bodies 28 are simultaneously extruded by the touch head 27, so that the two barbs 30 are correspondingly clamped into the two clamping grooves 29 one by one; the rotational axis of each L-shaped hook 28 is provided with a second torsion spring 31 for urging the barb 30 to separate from the catch groove 29. The working principle of the expansion joint 22: the third lever 8 extends into the blind hole 24 of the cylinder 23, and abuts against one end of the mandrel 26, so that the touch head 27 presses the two L-shaped hook bodies 28, and the two L-shaped hook bodies 28 swing a certain angle against the second torsion spring 31, so that the two barbs 30 are correspondingly clamped into the two clamping grooves 29 one by one. After the locking assembly is locked, the extension rod 25 and expansion joint 22 are relatively stationary. The specific operation method is that a straight rod is inserted into the third lever 8, so that the locking component is locked, the expansion joint 22 cannot slide along the extension rod 25 in the process of lifting the straight rod, and the phenomenon that the friction force generated by the friction plate 9 extruding the middle rod 7 is sufficient to drive the middle rod 7 to move downwards can be avoided. During the extrusion process, the friction plate 9 and the cushion layer 20 are deformed to a certain extent to adapt to the change of the distance between the friction plate 9 and the intermediate rod 7. In the process of pressing down the straight bar to reset the friction plate, the straight bar needs to be withdrawn a distance, so that the two barbs 30 withdraw from the two clamping grooves 29 in a one-to-one correspondence. The expansion joint 22 slides towards the extending rod 25 due to the extrusion of the friction plate, namely, the distance between the cushion layer 20 and the middle rod 7 is increased, so that the friction force between the cushion layer 20 and the middle rod 7 is greatly reduced, and the whole pressing process of pressing down the straight rod is very easy, and further labor is saved.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention, and are intended to be included within the scope of the appended claims and description.
Claims (9)
1. The guardrail for municipal administration comprises a base, upright posts and a railing, wherein the railing is connected with the base through the upright posts; the method is characterized in that: at least three transmission mechanisms are arranged in the inner cavity of the base, and the lower end of each transmission mechanism is respectively provided with a universal wheel;
all the transmission mechanisms have the same structure, and each transmission mechanism comprises a first lever, a second lever, a middle rod, a third lever and a friction plate; the first lever, the second lever and the middle rod are sequentially hinged end to end, and the middle part of the first lever and the middle part of the second lever are both rotationally connected in the corresponding inner cavity; one end of the first lever and two ends of the second lever are respectively provided with a movable hole for hinging; the lower end of the first lever is rotationally connected with a universal wheel, and the universal wheel is positioned at a notch at the lower end of the base; the middle rod is vertically and rollingly connected in the corresponding inner cavity;
the cross section of the middle rod is square, the friction plate is opposite to one side face of the middle rod, one end of the third lever is hinged with the friction plate, the third lever is hinged in the corresponding inner cavity, the friction plate is extruded on the corresponding side face of the middle rod and drives the middle rod to move downwards through upwards swinging the other end of the third lever, and then the corresponding universal wheel is supported on the ground to jack up and suspend the base.
2. A municipal administration guardrail according to claim 1, wherein: the rotating shafts of the first lever and the base and the rotating shafts of the second lever and the base are respectively provided with a first torsion spring, and the first torsion spring drives the first lever and the second lever to swing so as to reduce the moment required by jacking the base.
3. A municipal administration guardrail according to claim 1, wherein: each inner cavity is internally provided with an anti-falling plate parallel to the corresponding middle rod, and one side surface of the middle rod is provided with a plurality of first teeth which are upwards inclined; one side surface of the anti-falling plate is provided with a second tooth which is corresponding to the first tooth and is inclined downwards; the inner cavity is provided with a notch for accommodating the anti-falling plate, and the anti-falling plate can horizontally move in the notch; the notch is internally provided with a spring for pushing the anti-falling plate to tightly lean against the middle rod, and the first tooth is in contact engagement with the second tooth, so that the middle rod is prevented from moving upwards.
4. A municipal administration guardrail according to claim 1, wherein: rollers are respectively arranged between the plurality of side surfaces of the middle rod and the inner cavity.
5. A municipal administration guardrail according to claim 1, wherein: and a cushion layer for increasing friction force is arranged on the surface of the friction plate opposite to the middle rod.
6. A municipal administration guardrail according to claim 1, wherein: an expansion joint is arranged between the friction plate and the third lever; the telescopic joint comprises a cylinder body with a blind hole at one end and a locking assembly arranged in the blind hole of the cylinder body, and the other end of the cylinder body is hinged with the friction plate; the third lever is hollow, and one end of the third lever is provided with an extension rod which is connected with the blind hole in a sliding way; the inside of the extension rod is provided with a slidable mandrel, two ends of the mandrel respectively extend into a blind hole of the expansion joint and a hollow cavity of the third lever, one end of the mandrel positioned in the blind hole is provided with a touch head, and the touch head is pushed by the mandrel to squeeze the locking assembly, so that the locking assembly clamps the extension rod and the third lever and the expansion joint synchronously move; the base is provided with an opening communicated with the inner cavity for exposing the other end of the third lever.
7. The municipal administration guardrail according to claim 6, wherein: the locking component comprises an L-shaped hook body; the two L-shaped hooks are rotatably connected in the blind hole, the two L-shaped hooks are distributed on two sides of the extension rod, and the side wall of the extension rod is provided with a clamping groove corresponding to a barb at one end of each L-shaped hook; the other ends of the two L-shaped hook bodies are simultaneously extruded by the touch head, so that the two barbs are correspondingly clamped into the two clamping grooves one by one; the rotation axis of each L-shaped hook body is provided with a second torsion spring for driving the barb to separate from the clamping groove.
8. A municipal administration guardrail according to claim 3, wherein: the lateral wall of base is equipped with the unlocking hole with all anti-falling plate one-to-one to and every intermediate lever is equipped with the through-hole that corresponds with the unlocking hole that corresponds.
9. A municipal administration guardrail according to any one of claims 1-8, wherein: the base is provided with a plurality of otic placodes extending along the horizontal direction, and all otic placodes are evenly distributed along the circumference of base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210366433.3A CN114541303B (en) | 2022-04-08 | 2022-04-08 | Guardrail for municipal administration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210366433.3A CN114541303B (en) | 2022-04-08 | 2022-04-08 | Guardrail for municipal administration |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114541303A CN114541303A (en) | 2022-05-27 |
| CN114541303B true CN114541303B (en) | 2024-02-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210366433.3A Active CN114541303B (en) | 2022-04-08 | 2022-04-08 | Guardrail for municipal administration |
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| CN (1) | CN114541303B (en) |
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