CN213596861U

CN213596861U - Road height limiting frame with adjustable height

Info

Publication number: CN213596861U
Application number: CN202022144298.7U
Authority: CN
Inventors: 刘琳; 刘莹; 李大伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-25
Filing date: 2020-09-25
Publication date: 2021-07-02
Anticipated expiration: 2030-09-25

Abstract

The utility model discloses a road height-limiting frame with adjustable height, including stationary mast, activity stand and crossbeam, the stationary mast lower extreme is fixed with the ground, the stationary mast top sets up the sleeve, activity stand lower part surface is the external screw thread, is clearance fit between this external screw thread and the sleeve inner wall, and the inside and outside surface of rotating the piece is equipped with internal thread and worm gear teeth respectively, the internal thread with external screw thread screw-thread fit, the worm gear teeth and worm meshing, the rotatable installation of worm is at the sleeve top, the worm passes through the coupling joint with the micro motor of installing on the sleeve. Simple structure is reliable, the utility model discloses well relative height between fixed post and the movable stand can drive through micro motor and change the height, simple structure, and form rigid rather than flexible connection between movable stand and the fixed post for the crossbeam can be maintained at invariable height, also can keep the invariant of height under the weather.

Description

Road height limiting frame with adjustable height

Technical Field

The utility model relates to a traffic road facility technical field.

Background

In the projects of expressways, municipal roads and the like, the maximum span of the portal frame is 17.6 meters, 2 crossbeams are provided, a plurality of vertical supports are provided, and the upright posts are inverted Y-shaped as shown in figure 1. The height-limiting frame of the structure adopts a double-beam structure, the beams and the upright posts of the structure both adopt a box-shaped structure formed by butt joint of channel steel and steel plates, and the height of the height-limiting frame of the structure is not adjustable. When emergency engineering vehicles and fire-fighting vehicles need to pass through, dismantling operation is needed to pass through, a novel portal frame with adjustable height is researched by a unit, and the technical scheme disclosed in CN 204125865U is referred, wherein the technical scheme discloses a liftable intelligent height-limiting portal frame system capable of being remotely controlled, the main structural system is composed of a main structural frame, a pulley is connected with a winch through a steel wire rope, the winch is connected with a lifting cross beam through the steel wire rope, the main portal frame is connected with an access device, the access device is connected with a triggering alarm device, the triggering alarm device is connected with a remote control center, the main portal frame is connected with a monitoring system, the monitoring system is connected with the remote control center and a lifting portal frame device, the remote control center is connected with the lifting portal frame device and an emergency response device, the lifting portal frame device transmits instructions and monitors in real time through a wireless network transmission device, the wireless network transmission device is connected with the remote control center.

Above-mentioned scheme is mainly high through elevation structure system automatically regulated, realize the adjustable of height, foretell elevating system adopts the hoist engine scheme, promptly, the actual height through hoist engine and wire rope control lifting beam, this kind of scheme is feasible in principle, but in the in-service use, lifting beam is connected with wire rope, hesitation wire rope is flexible, so, when the vehicle passes through, the passing through of offender's accessible instrument passes through lifting beam jack-up, lifting beam itself is in the hoist and mount state moreover, the steadiness is not good, be difficult to form effectual blockking.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects of the prior art, the utility model provides a road height-limiting frame with adjustable height for solve current height-limiting frame and do not have the altitude mixture control effect, and provide a height-limiting frame with auto-lock performance, rigidity.

The utility model provides a technical scheme that its technical problem adopted does:

a road height-limiting frame with adjustable height comprises a fixed upright post, a movable upright post and a cross beam, wherein the lower end of the fixed upright post is fixed with a foundation, the road height-limiting frame is characterized in that a sleeve is arranged at the top of the fixed upright post, the outer surface of the lower part of the movable upright post is provided with an external thread, the external thread is in clearance fit with the inner wall of the sleeve,

the gear ring is characterized by further comprising a rotating part, a worm and a micro motor, wherein the inner surface and the outer surface of the rotating part are respectively provided with an internal thread and worm gear teeth, the internal thread is in threaded fit with the external thread, the worm gear teeth are meshed with the worm, the worm is rotatably arranged at the top of the sleeve, and the worm is connected with the micro motor arranged on the sleeve through a coupler.

Furthermore, a shell cover is arranged at the flange at the upper end of the sleeve, and a flexible rubber sleeve matched with the movable upright post sleeve is correspondingly arranged at the top of the shell cover.

Further, a height gauge is arranged on one side of the height limiting frame.

Further, the sleeve and the fixed stand column are fixed through spot welding.

Furthermore, the upper end of the movable upright post is welded and connected with two cross beams to form a structure shaped like a Chinese character 'men'.

Further, a ball mounting groove is provided at a lower surface of the rotating member, the ball mounting groove being used for mounting a ball.

The utility model has the advantages that:

1. simple structure is reliable, and is whole succinct and not in disorder, the utility model discloses well relative height between stationary mast and the movable stand can drive through micro motor and change the height, simple structure, and form rigid rather than flexible connection between movable stand and the stationary mast for the crossbeam can be maintained at invariable height, also can keep the invariant of height under the weather of wind and rain.

2. The adjustment is convenient, when needing to be adjusted, the micro motor is started, and the climbing without manpower is realized.

3. Later maintenance is convenient, the utility model provides a rotate the piece and be the steel component, do not have wire rope transmission component, have all characteristics of gear drive, can accomplish long-term non-maintaining of being in service (only need a small amount of lubricating oil).

4. Can extend, the utility model provides a micro motor can insert current traffic management system, realizes remote control through current intelligent management system, has fine electric expansion performance.

Drawings

Figure 1 is a prior art solution.

Fig. 2 is a perspective view of the present invention.

Fig. 3 is a partially enlarged view of a portion a in fig. 2.

Fig. 4 is a schematic view of the engagement of the rotating member and the worm.

Fig. 5 is a partial cross-sectional view of fig. 2.

In the figure: 10 fixed columns, 11 flange connections, 20 movable columns, 21 external threads, 30 cross beams, 40 sleeves, 41 circular ring platforms, 50 rotating parts, 51 worm gear teeth, 52 internal threads, 60 worms, 70 balls, 80 shell covers and 90 height gauges.

Detailed Description

Referring to fig. 2 to 5, the height-adjustable road height limiting frame comprises a fixed upright post 10, a movable upright post 20 and a cross beam 30, wherein the lower end of the fixed upright post 10 is provided with a flange connection 11, the flange connection is fixed on a foundation through a bolt connection, and a reinforcing rib is arranged at the flange connection position for enhancing the connection strength with the foundation.

The fixed upright post 10 adopts a circular seamless steel pipe, a sleeve 40 is sleeved in an inner circular hole of the fixed upright post 10, the upper end of the sleeve 40 is a circular platform 41, the lower end of the sleeve is inserted into the fixed upright post, and the fixed upright post are fixed by spot welding. With a smooth inner surface inside the sleeve.

The movable upright post 20 is made of a round steel pipe, the outer surface of the lower part of the movable upright post is provided with an external thread 21, the external thread is in clearance fit with the inner wall of the sleeve 40, the fixed upright post is fixed and immovable, and the movable upright post 20 can rotate under the action of external force. The upper ends of the movable columns are welded with two cross beams 30, that is, the cross beams are welded between two adjacent movable columns to form a structure in the shape of a Chinese character 'men'.

The electric power tool further comprises a rotating part 50, a worm 60 and a miniature alternating current motor, wherein the rotating part 50 is formed by machining a circular steel ring, worm gear teeth 51 are machined on the outer surface of the rotating part 50, internal threads 52 are machined on the inner surface of the rotating part and are used for being in threaded fit with external threads 21 on the movable stand column to form a threaded fit part. A ball mounting groove for mounting the ball 70 is provided at a lower surface of the rotation member 50.

The installation mode is as follows, will rotate the piece and close on the activity stand soon, the worm passes through the bearing and installs in the bearing frame, and the bearing frame belongs to telescopic partly, that is to say the bearing frame is welded fastening on telescopic top ring shape platform, and the installation back, guarantees that the worm is meshed with the worm gear tooth that rotates on the piece. Miniature AC motor installs on ring shape platform, that is to say, be fixed relation with the sleeve, miniature AC motor's power take off axial part is connected between shaft coupling and the worm, namely, through the rotation of miniature AC motor control worm, the worm is power transmission again for rotating the piece, owing to rotate and be screw-thread fit between the stand, so can drive the movable stand and rise (motor corotation) or descend (motor reversal), and the rotation of rotating the piece is with activity stand axle center as the center of rotation, under the dead weight effect of activity stand, it can laminate in telescopic upper end flange department to rotate the piece, the ball that sets up between rotation piece and sleeve upper end flange can alleviate friction between them, make the cooperation more nimble.

The flange department at sleeve upper end department is provided with outer housing 80, protects rotating the piece and worm position, and this outer housing 80 adopts the plastic casing, and the corresponding top of outer housing is provided with puts complex flexible rubber sleeve 81 with the activity stand cover, protects the activity stand.

Further, set up tongue 90 in one side of stand for show limit for height crossbeam's real-time height, conveniently show the effective height of limit for height frame.

The above-mentioned embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and those skilled in the art should be able to make various modifications and improvements to the present invention without departing from the spirit of the present invention.

Claims

1. A road height-limiting frame with adjustable height comprises a fixed upright post, a movable upright post and a cross beam, wherein the lower end of the fixed upright post is fixed with a foundation, the road height-limiting frame is characterized in that a sleeve is arranged at the top of the fixed upright post, the outer surface of the lower part of the movable upright post is provided with an external thread, the external thread is in clearance fit with the inner wall of the sleeve,

2. The height-adjustable road height-limiting frame as claimed in claim 1, wherein a housing cover is provided at a flange at the upper end of the sleeve, and a flexible rubber sleeve is correspondingly provided at the top of the housing cover to fit the movable upright.

3. The height adjustable road height limiting rack of claim 1, wherein a height gauge is provided at one side of the height limiting rack.

4. The height adjustable road height limiting rack of claim 1, wherein the sleeve is spot welded to the stationary post.

5. The height-adjustable road height limiting frame according to claim 1, wherein the upper ends of the movable upright posts are welded and connected with two cross beams to form a structure shaped like a Chinese character 'men'.

6. The height-adjustable road height limiting frame according to claim 1, wherein a ball mounting groove for mounting a ball is provided at a lower surface of the rotation member.