38 results about "Guardrail height" patented technology

The invention relates to the technical field of highway guardrail height detection, in particular to a highway guardrail height detection method based on line knot light, and the method comprises the steps: installing a line structured light scanner, a high-definition camera and real-time dynamic differential positioning equipment at the side of a detection vehicle to construct a vehicle-mounted system; the method comprises the following steps: synchronously acquiring guardrail three-dimensional point cloud, images and vehicle positioning data when a vehicle runs according to preset parameters; identifying the type of the guardrail by using an instance segmentation model pre-trained by an edge calculation unit, and outputting a code; performing point cloud dynamic compensation, road reference surface extraction and guardrail feature extraction on the acquired data based on the guardrail type; and finally calculating the actual height of the guardrail according to the elevation difference between the road reference surface and the guardrail top surface. According to the method, through multi-sensor fusion, intelligent identification and a targeted data processing algorithm, high-precision and real-time dynamic detection of different types of guardrails is realized, the problems of low efficiency, poor precision and weak adaptability of a traditional method are solved, and the method can be widely applied to highway guardrail safety detection scenes.

The utility model relates to the technical field of corrugated steel guardrail height detection, and discloses a corrugated steel guardrail cross beam center height detection device which comprises a weight box, the upper surface of the weight box is detachably connected with a horizontal ruler, the side face of the weight box is detachably connected with a clamping frame used for fixing, and the horizontal ruler is detachably connected with the clamping frame. The inner side wall of the clamping frame is fixedly provided with a ruler used for measurement, and the outer surface of the ruler is slidably connected with a sliding frame. According to the corrugated steel guardrail cross beam center height detection device, through cooperative arrangement of the scale and the sliding frame, the device can be more convenient and practical, and when a worker uses the device to measure a corrugated steel guardrail, the connection between the sliding frame and the scale may be loosened firstly, and then the worker can conveniently measure the height of the corrugated steel guardrail. According to the height of the corrugated steel to be measured, the sliding frame slides along the ruler, and when the sliding frame slides to a similar position, the transverse ruler on the sliding frame slides out to coincide with the center of the corrugated steel, so that the measurement result is more accurate when the device is used for measurement.

The utility model relates to the technical field of baby cribs, and discloses a baby crib single-hand folding device which comprises two sets of protective end plates, two sets of splicing assemblies are arranged on the inner sides of the two ends of the protective end plates respectively, and the splicing assemblies are used for flexibly installing and controlling the height of a guardrail. According to the single-hand folding device for the baby crib, the quick folding assembly is installed, the single-hand folding device can be connected with the left crib frame and the right crib frame through the splicing base, folding can be conducted by grasping the folding handle installed in the middle and applying pulling force upwards, and the crib frames are controlled to be in a horizontal state to be inclined and finally adjusted to be in a vertical state through rising folding of a metal plate; the baby crib has the advantages that the baby crib can be quickly folded by the aid of the quick folding assemblies, the baby crib can be folded by a single hand, and accordingly the difficulty in folding and carrying the baby crib by users can be effectively reduced.

The utility model relates to the field of constructional engineering, and discloses a construction protective fence for constructional engineering, which comprises a plurality of unit structures arranged side by side, the vertical telescopic sleeves are arranged on the left and right sides of the base; the vertical telescopic cylinder comprises a plurality of hollow cylinder bodies, and a connecting lantern ring is fixed to the outer wall of the top of each hollow cylinder body. Pull ropes are arranged on the left and right sides of the top of the blocking net, and the blocking net is fixedly connected with the connecting lantern rings through the pull ropes; and the top plate is arranged at the top of the vertical telescopic sleeve, and the lower surface is fixedly connected with the top of the innermost hollow cylinder. According to the device, the height of the protective fence is adjusted by mutually sleeving the hollow cylinders and sliding the hollow cylinders up and down, and then the height is locked in the first plug pin holes and the second plug pin holes through the plug pins, so that the purpose of quickly adjusting the height of the protective fence according to the actual requirements of a construction site is achieved. And meanwhile, the height of the protective fence can be reduced to the minimum during storage, so that transportation and storage are facilitated.

The utility model relates to the technical field of guardrails, and discloses a central isolation strip guardrail which comprises at least one balance weight base, stand columns are arranged at the top ends of the balance weight bases, extension columns are arranged in the stand columns in an inserted mode, and locking structures are arranged between the extension columns and the stand columns. A plurality of transverse connecting rods convenient to disassemble and assemble are arranged between the stand columns and between the extension columns. Compared with the prior art, the guardrail has the advantages that the guardrail can be lifted conveniently when a large number of large trucks and passenger cars pass through, pedestrians can be prevented from climbing over at will, the overall safety is high, use is flexible, the enough guardrail height is provided, certain plastic deformation can be generated when the vehicles collide with each other, and therefore collision energy is effectively absorbed, and the service life of the guardrail is prolonged. According to the utility model, the vehicle impact force is reduced, the deformation or damage to the guardrail is greatly reduced, and the reflective strips can play a warning role, so that the visibility and the warning effect under the conditions of night and severe weather are improved.

The utility model discloses a lifting device for iron horse transformation, which belongs to the technical field of road guardrails and comprises a section, a cross beam is arranged on the section, a support for lifting is additionally arranged between the cross beam and the top of the section, ship-shaped supporting pieces are further arranged at two ends of the bottom of the section, and two ends of each ship-shaped supporting piece are connected with side edges of the bottom of the section. A heightening piece used for rising is arranged at the bottom of the ship-shaped supporting piece, and a first supporting rib plate and a second supporting rib plate used for connecting and installing are arranged at the two ends of the interior of the joint respectively. The sections are connected with fixing sections after being arranged at certain intervals, the sections and the fixing sections are arranged to form a fence, the two ends of the fence are connected with end sections, and the guardrail transformation scheme is mainly carried out from the two aspects of guardrail height and guardrail drainage optimization. The drainage efficiency of the guardrail is improved in the mode that the top and the bottom of the guardrail are heightened and the bottom of the guardrail is heightened.

This utility model relates to the field of building construction and discloses a construction guardrail, including a base. Two uprights are fixedly connected to the left and right sides of the top of the base. A lifting rod is slidably connected inside each upright. A fixing block is fixedly connected to the top of each lifting rod. A crossbar is fixedly connected between the two fixing blocks. Multiple telescopic rods are fixedly connected between the crossbar and the base. A positioning component is provided inside the lifting rod. Adjacent uprights are connected by a snap-fit ​​component. An insert is fixedly connected to the left side of the base, and a slot is provided on the right side of the base, into which the insert is inserted. This utility model allows for adjustment of the guardrail height to suit different locations or construction stages, improving the guardrail's versatility and facilitating the splicing of two guardrails, thus increasing the efficiency of guardrail assembly for workers.

The utility model discloses externally-hung asphalt pavement multi-type water retaining belt rolling forming equipment which comprises a paver, a butt joint device, a mixture utilization device, a mixture lifting device, a pressure head device and a water retaining belt rolling forming device. The paver is connected with the water retaining belt rolling forming device through the butt joint device; the pressing head device is connected with the water blocking belt rolling forming device, the mixture utilizing device comprises a mixture hopper and a conveying device, the conveying device conveys a mixture from the mixture hopper to a proper position, and the mixture lifting device is a telescopic arm or a conveying belt and is used for lifting the mixture to the height capable of crossing a guardrail. The device can be constructed together with an asphalt pavement paver, special construction procedures are reduced, the construction efficiency is improved, in addition, the device adopts a modular design, the device can adapt to water retaining belts of different specifications and shapes, and the cost of the device is reduced. The equipment can be matched with a guardrail for construction, and the problem that existing equipment cannot be used for construction is solved.

The utility model belongs to the technical field of automobile conveying chains, and particularly relates to an automobile conveying chain with an adjustable guardrail mechanism, which comprises an automobile conveying chain main body, a sliding rod is slidably connected in the automobile conveying chain main body, the upper end of the sliding rod is fixedly connected with a guardrail, and the lower end of the guardrail is fixedly connected with a threaded rod. A limiting block is rotationally connected into the automobile conveying chain body and movably connected with the threaded rod. The guardrail is innovatively designed and provided with key components such as the sliding rod, the threaded rod and the limiting sleeve, when the guardrail is used, the limiting sleeve and the threaded rod are promoted to generate threaded motion by rotating the limiting sleeve, and then the threaded rod drives the guardrail to move, so that the height of the guardrail is effectively adjusted; the problem of inconvenience caused by the fact that the guardrail of the automobile conveying chain is difficult to adjust in the using process is perfectly solved, operation becomes more flexible, and convenience and high efficiency of the automobile conveying chain in the using process are greatly improved.

A multi-locking-position safety nursing bed relates to the field of child nursing beds, and is characterized in that a lifting guardrail of the nursing bed is provided with locking tongues, a bed body upright post is provided with a locking tongue accommodating cavity matched with the locking tongues for locking, and the locking tongues on two sides of the lifting guardrail are independently controlled by a first handle and a second handle respectively; therefore, height adjustment of the armrest can be controlled only by turning over the first handle and the second handle with two hands, misoperation of children can be avoided, and safety is enhanced. The three groups of spring bolt accommodating cavities are arranged on the stand column and correspond to different locking heights of the liftable guardrail respectively, and when the spring bolt accommodating cavities are located at the low position, a child caregiver can feed medicine, change diapers and the like conveniently; when the child is in the high position, correspondingly when a child caregiver leaves temporarily or the child lies in bed for rest, the situation that the child climbs and falls off under the unattended condition is avoided; when the liftable guardrail is in the middle position, the liftable guardrail can flexibly and quickly adjust the height of the liftable guardrail according to different scenes corresponding to a scene in which a child caregiver communicates and interacts with the child when the child caregiver still has a certain distance from the bed body.

A safety barrier (1) is provided. The barrier (1) has a length (L), a width (W), and a height (H). The barrier (1) has an end connection (10) at one end, which end connection is arranged to connect with a corresponding end connection of another safety barrier. The end connection comprises a receiving space (11) adapted to receive at least a portion of an end connection of another safety barrier and to permit connection and disconnection with said corresponding end connection of another safety barrier only by moving the safety barriers relative to each other in the direction of the barrier's height. A distance across the receiving space between wall surfaces of the receiving space in the direction of the safety barrier's length is minimal between the upper and lower ends of the end connection and is greatest at the ends.

The utility model relates to the technical field of guardrail measurement, and provides a waveform guardrail installation height measuring device, which is characterized in that a first lower limit height measuring rubber rod, a first upper limit height measuring rubber rod, a second lower limit height measuring rubber rod and a second upper limit height measuring rubber rod are respectively arranged at the side top part of a vertical rod; the base and the vertical rod are pushed to move to the side of a target guardrail to be measured under the action of the universal wheels by holding the grip; whether the current installation height of the guardrail meets the standard requirement or not can be determined only by comparing whether the current height of the guardrail is between the first lower limit height measurement glue stick and the first upper limit height measurement glue stick and between the second lower limit height measurement glue stick and the second upper limit height measurement glue stick. Compared with a comparison file, the device can quickly measure a plurality of groups of continuous guardrails and judge whether the guardrails belong to a standard installation height interval or not, so that the time consumption of a measurement process is greatly reduced.

The guardrail comprises a stand column, a protective beam and an anti-blocking block, the anti-blocking block is installed at the end, away from the road surface, of the stand column, and the protective beam is installed on the anti-blocking block; the section, parallel to the road surface, of the stand column is circular. The anti-blocking block comprises a cylindrical barrel, two side plates oppositely arranged on the two sides of the barrel, and a cover plate fixedly connected with the tops of the two side plates. The cylinder body is arranged outside the stand column in a sleeving manner and is detachably connected with the stand column; the cylinder body is provided with a plurality of groups of first mounting holes, the plurality of groups of first mounting holes are arranged at intervals along the extension direction of the cylinder body, the stand column is provided with a plurality of groups of second mounting holes which are arranged at intervals along the extension direction of the stand column, and the first mounting holes and the different second mounting holes are correspondingly mounted so as to adjust the mounting height of the anti-blocking block. According to the guardrail, the height between the protective beam and the road surface can be adjusted, and lossless adjustment of the height of the guardrail is achieved.

The utility model discloses a medical sickbed with adjustable guardrail height, which comprises a bedstead main body and a guardrail movably arranged on the bedstead main body, the guardrail comprises a movable rod movably arranged on the bedstead main body and a lifting rod in sliding fit with the movable rod, a cross rod is movably arranged above the lifting rod, and the cross rod is connected with the movable rod. The hollow cavities are formed in the transverse rod and the lifting rod, the limiting mechanism is arranged in the lifting rod, the control assembly for controlling the state of the limiting mechanism is arranged on the transverse rod, height adjustment of the guardrail can be achieved, and operation is convenient.

The utility model relates to the technical field of safety maintenance platforms, and discloses a wind power mixed tower ladder stand anti-falling safety maintenance platform which comprises a bottom supporting base, a side climbing ladder stand, a wind power mixed tower and a maintenance platform supporting plate. The side face of the wind power mixing tower is fixedly connected with a side face climbing ladder stand, the outer side of the wind power mixing tower is fixedly connected with an overhauling platform supporting plate, and the guardrail height adjusting assembly is arranged at the top of the overhauling platform supporting plate and used for flexibly adjusting the height of a guardrail. The side face anti-falling protection assembly is arranged on the side face of the maintenance platform supporting plate and used for carrying out anti-falling protection on maintenance personnel, the side face anti-falling protection assembly is matched with the side face rotating supporting rod and the like, all-directional anti-falling is achieved, the operation risk is reduced, and the maintenance platform adapts to the complex environment; the height of the guardrail height adjusting assembly can be adjusted according to needs, comfort and operation flexibility are improved, and maintenance personnel are assisted to concentrate on operation.

The utility model relates to the technical field of hanging baskets, in particular to a building safety outer wall protection hanging basket which comprises a bottom plate and a protection assembly, and the protection assembly comprises a telescopic rod, a first electric telescopic rod, a square frame, a storage basket, a cover plate, a sliding rail and an opening and closing component. The bottom plate serves as a platform for supporting a user, a worker stands on the top of the bottom plate when using the guardrail, the first electric telescopic rods are arranged at the four corners of the bottom plate, the square frame is controlled to ascend and descend through the first electric telescopic rods, the height of the guardrail composed of the telescopic rods and the square frame is controlled, and the storage baskets are arranged at the two ends of the bottom plate so that the user can flexibly use the guardrail left and right conveniently. The storage basket slides on the sliding rail to adjust the use position, the cover plate covers the storage basket, a used liquid barrel is placed in the storage basket to prevent liquid from being scattered during shaking, and the opening and closing component controls opening and closing of the cover plate. And the construction is influenced by the scattering of the placed liquid materials.

A safety barrier is provided. The barrier has a length, a width, and a height. The barrier has an end connection at an end of the safety barrier, which end connection is arranged to be connected with a corresponding end connection of another safety barrier. The end connection comprises a receiving space adapted to receive at least a portion of an end connection of another safety barrier, and to only enable connection and disconnection with the corresponding end connection of another safety barrier by movement of the safety barriers relative to each other in direction of the height of the safety barrier. A distance through the receiving space between wall surfaces of the receiving space in the direction of the length of the safety barrier is at a minimum between upper and lower ends of the end connection and is greater at the ends.

The invention belongs to the technical field of building protective fences, and particularly relates to a construction protective fence for building engineering and a protection method thereof.The construction protective fence comprises a first cross beam rod and sealing blocks symmetrically arranged at the two ends of the first cross beam rod, extension columns are fixedly connected to the bottom ends of the sealing blocks, and stand columns are inserted into the extension columns and fixedly arranged on the top face of a base plate; a second cross beam rod is fixedly connected between the two stand columns, and a sleeve and a guardrail rod which are movably connected in an inserted mode are arranged between the first cross beam rod and the second cross beam rod. The extension column is fixedly connected with a supporting plate, the supporting plate is in threaded connection with a hand screw, and the hand screw penetrates through the supporting plate and is in threaded connection with the stand column. The protective fence has the beneficial effects that the adjustability of the height of the protective fence is improved, and the protective fence is easily transferred through the pulleys.

The utility model discloses a municipal road guardrail which comprises two outer supporting stand columns, a guardrail frame is fixedly installed between the two outer supporting stand columns, an outer protective handrail is fixedly installed in the guardrail frame, a second storage groove is formed in the top of the guardrail frame, and a first storage groove is formed in the top of the second storage groove. And first storage grooves are formed in the two outer supporting stand columns correspondingly, and ejector rods are movably installed in the second storage grooves. The overall height of the guardrail is adjusted by separating the inner protective handrail from the interior of the outer protective handrail, so that the use requirements in different scenes are met, and the height of the guardrail is reduced whether the protective range needs to be increased to cope with higher safety risks or the height of the guardrail is reduced for the consideration of attractiveness and practicability. The guardrail can be easily realized through the adjusting mechanism, and the capability of adjusting the intercepting height not only improves the practicability of the guardrail, but also enables the guardrail to exert the best protection effect under various environments and conditions.

The present application relates to guardrail installation technical field, disclose a kind of for highway wave-shaped guardrail overall height promotion auxiliary support device, including cross pipe and three support columns, the inside of three The support column is provided with height adjusting assembly, three The height adjusting assembly is staggered and is arranged on the outer wall of cross pipe, the outer wall of three The support column is provided with mounting assembly, the outer wall of same side The mounting assembly is provided with L-shaped seat, the outer wall of other side The mounting assembly is provided with movable rod one on both sides, the inner wall of two The movable rod one is slidably connected with moving rod. Through the cooperation of mounting assembly and support assembly and other components, the device can assist the installer to separate the fence board and column, to assist the installer to achieve the purpose of guardrail height promotion operation, simplify the complexity of traditional manual operation, so that the installer can more quickly, more easily complete the installation and height adjustment of guardrail.

The utility model discloses a waveform guardrail height measurement acceptance device, which comprises two positioning plates, a first fixing plate is fixedly arranged on the outer wall of one side of the bottom of each positioning plate, a fixing sleeve is fixedly arranged at the central position of the outer wall of one side of each first fixing plate, and a laser is mounted on the inner wall of each fixing sleeve. A second fixing plate is fixedly arranged on the outer walls of one sides of the tops of the two positioning plates, a supporting rod bent upwards is fixedly arranged on the outer wall of one side of the second fixing plate, and two guide sleeves are fixedly arranged on the outer wall of the side, away from the positioning plates, of the top of the supporting rod. The device is driven by a vehicle to move along the wave-shaped guardrail, the wave-shaped guardrail is located between the laser device and the laser induction plate, whether the height of the wave-shaped guardrail meets the standard or not can be quickly reflected by judging whether laser generated by the laser device penetrates through the wave-shaped plate and irradiates the laser induction plate or not, measurement is convenient, and the working efficiency is improved. And the speed of height measurement and acceptance of the wave-shaped guardrail is greatly improved.

The utility model relates to the technical field of safety engineering, concretely relates to a liftable pulley guardrail, including guardrail main part, the guardrail main part is opened with two sliding slots, and the sliding slot slidingly connects with the shelter frame, and the guardrail main part one side is provided with drive mechanism, and two winding mechanisms are installed on drive mechanism, and the guardrail main part one side is provided with luminous mechanism, and the shelter frame is opened with two mounting slots, and winding mechanism includes equipment box, and the equipment box inside rotationally connects with the winding drum, and the winding drum surface is connected with the cable of winding, and the equipment box top is opened with the round hole, and the cable one end passes through the round hole and is fixedly connected with the bottom of mounting slot. The utility model discloses through the mutual cooperation of double -end motor, pivot, winding drum and cable, when double -end motor rotates, drives pivot rotation and winding drum rotation, makes winding drum winding or open cable, and the cable is in contact with the surface of two fixed pulleys and continues to slide, thereby reaches the purpose of adjusting the height of the guardrail.

The utility model relates to an anti-falling ceramic tile transfer device, which belongs to the technical field of ceramic tile production, and comprises a base, the top of the base is fixedly connected with a bracket, the top of the bracket is fixedly connected with a transfer disc, the upper side of the transfer disc is provided with a protective frame, one side of the protective frame is fixedly connected with a first connecting plate, and the other side of the protective frame is fixedly connected with a second connecting plate. A lifting mechanism is arranged on the outer side of the first connecting plate; the lifting mechanism comprises a fixing box and a driving motor, a shaft rod is fixedly installed on an output shaft of the driving motor and extends into the fixing box, a main gear is fixedly connected to the outer side of the shaft rod, and a driven gear is meshed with the outer side of the main gear. According to the anti-falling ceramic tile transfer device, ceramic tiles with different heights can be stably protected conveniently, practicability is high, and the problem that in the prior art, the height of a guardrail on a ceramic tile transfer device is generally fixed, cannot be adjusted and cannot adapt to conveying of the ceramic tiles with different heights, and transfer is inconvenient is solved.

The invention relates to an elevator car top guardrail lifting control method, an elevator, an electronic device and a storage medium, and is applied to the field of elevator safety control. The method comprises the steps that in response to a received elevator running state signal, under the condition that the elevator running state signal indicates that elevator overhaul is started, the elevator is started; the distance between the current elevator car and the shaft wall of the shaft where the elevator is located is obtained, and it is determined that a current elevator car top guardrail needs to be lifted to the first guardrail height according to the distance between the current elevator car and the shaft wall of the shaft where the elevator is located; in response to the received signal that the maintainer enters the elevator car roof, height information of the maintainer is obtained; according to the height information and the first guardrail height, it is determined that the current elevator car top guardrail needs to be lifted to the second guardrail height; and the elevator car top guardrail is controlled to ascend and descend to the second guardrail height. By means of the car roof guardrail, the problem that an existing car roof guardrail cannot meet the safety requirement of operation of maintenance personnel when an elevator is in a maintenance operation state is solved.

The utility model relates to the technical field of guardrails, in particular to a stainless steel stand column for guardrails, which comprises a stand column body, a rectangular limiting groove is formed in the bottom of the stand column body, a supporting column is sleeved in the rectangular limiting groove, circular limiting grooves are formed in two ends of one side of the stand column body, and rod fixing assemblies are arranged in the circular limiting grooves. The rod fixing assembly comprises a cylindrical block arranged in the circular limiting groove, a reserved groove is formed in one side of the cylindrical block in a penetrating mode, and one end of the cylindrical block is connected with an adjusting screw rod through a threaded groove. The supporting columns are sleeved with the rectangular limiting grooves in the bottoms of the stand columns, so that the stand columns and the supporting columns can stretch out and draw back, adjustment can be conveniently conducted according to the height of the guardrail, one end of the guardrail is inserted into the reserved grooves, the cylindrical blocks are tightened by rotating the adjusting screw rods, one end of the guardrail can be clamped, and connection of the guardrail is facilitated.

The utility model discloses a liftable heightening fence and a children's bed, which comprise a guardrail assembly arranged in the circumferential direction of a bed body, the heightening fence is arranged above the guardrail assembly, heightening columns are arranged at the corners of the heightening fence, and one or more than two surfaces of the heightening fence are arranged into the liftable fence through a lifting assembly; each lifting assembly structurally comprises vertical rods fixedly arranged on the inner sides of the adjacent heightening columns, a transverse rod is jointly installed between the two vertical rods, and the ends of the transverse rods are slidably installed on the corresponding vertical rods through connecting pieces. The locking piece is used for locking the connecting piece located at the top end of the vertical rod; by additionally arranging the heightening fence on the fence assembly, the height of the fence is effectively increased, the fence assembly is suitable for protection of slightly big babies, actual use and interaction after the fence is heightened are facilitated through the arrangement of the liftable fence, and the fence assembly is particularly suitable for being used on a spliced bed.

The utility model discloses a bridge guardrail paint repairing device, which relates to the technical field of bridge guardrails and comprises a moving trolley, one side of the moving trolley is fixedly connected with a fixed frame, one side of the fixed frame is provided with a paint repairing mechanism, and the inner side of the fixed frame is provided with a collecting mechanism. The paint make-up mechanism comprises a second connecting pipe, a plurality of first rotating rods and a plurality of second rotating rods, the second connecting pipe is connected with the paint make-up spray head, the ends of the first rotating rods are hinged, the ends of the second rotating rods are hinged, the middles of the corresponding first rotating rods and second rotating rods are hinged, and the connecting parts are connected with connecting blocks; the connecting block is connected with the paint make-up nozzle. The height of the connecting block and the height of the paint make-up nozzle are adjusted by adjusting the first rotating rod and the second rotating rod, paint make-up can be conducted on guardrails of different heights, the position of the paint make-up nozzle is arranged according to the height of the guardrails, and comprehensive covering is guaranteed.

The utility model discloses a highway guardrail height measuring device, and belongs to the technical field of measuring equipment. The first sleeve is in sliding connection with the longitudinal shaft, and a groove is formed in the first sleeve; the second sleeve is fixed on the longitudinal shaft, and a groove is formed in the second sleeve; the graduated scale is arranged in the groove, one end of the graduated scale is fixed to the second sleeve, and the other end of the graduated scale is slidably connected with the first sleeve; the vernier scale is arranged on the first sleeve; the gradienter is vertically fixed with the longitudinal shaft; the rack is arranged on the back of the graduated scale; the gear is arranged in the first sleeve; and the knob is fixed with the rack. In the implementation process of the technical scheme, the rack and the gear are arranged, the rack is fixed to the back face of the calibrated scale, when the gear is rotated through the rotary knob, up-down fine adjustment of the first sleeve can be achieved, and therefore more accurate height data can be obtained.

To provide a construction method of a guard fence, in which a terminal support hardly falls even when falling rocks collide with the vicinity of the height of 1 / 3 of the guard fence or the vicinity of the height of 2 / 3 of the guard fence.SOLUTION: The method includes a first fixing step of fixing one end of the uppermost wire passing through the end column to the first pile via a buffer fitting, and fixing one end of the lowermost wire passing through the end column to the second pile; a second fixing step of fixing one end of the first side wire to a portion corresponding to a position of one third of the height of the end column, and fixing the other end of the first side wire to the first pile; and a third fixing step of fixing one end of the second side wire to a portion corresponding to a position of one half of the height of the end column, and fixing the other end of the second side wire to the second pile.SELECTED DRAWING: Figure 4

The utility model discloses a kind of traffic safety with temporary guardrails, belong to traffic protection facilities technical field, including two parallelly arranged protection cross bars, first support mechanism is arranged between two protection cross bars, the first support mechanism includes at least two support rod bodies perpendicular to the protection cross bar, support rod body opposite end portion can be axially slidably telescopic, between the protection cross bar located at bottom and the support rod body on the protection cross bar connected to top, limit trigger component is arranged, the first support mechanism side parallelly arranged with second support mechanism, the second support mechanism includes two groups of symmetrically arranged support foot stand and the drive component that can drive two groups of support foot stand overturn folding, the utility model is in by using overlapping storage type design, makes guardrail height overall reduction, to hold more easily keep balance when, not easy to shake, operating personnel can directly hold the middle position of top, realize stable carry.