CN115650133A

CN115650133A - Automatic telescopic guardrail

Info

Publication number: CN115650133A
Application number: CN202211340297.7A
Authority: CN
Inventors: 张文军
Original assignee: JINAN RUIZHI MACHINERY CO Ltd
Current assignee: JINAN RUIZHI MACHINERY CO Ltd
Priority date: 2022-10-29
Filing date: 2022-10-29
Publication date: 2023-01-31

Abstract

The invention belongs to the field of protective guardrail application equipment, and particularly relates to an automatic telescopic guardrail convenient to store, which comprises a guardrail, a movable pulley, a steel wire rope, a counterweight, an upper stop block, a lower stop block, a guide rod and a guide sleeve, wherein the guide sleeve is fixed on a lifting platform, the guide rod is fixed on the guardrail, the movable pulley is fixed below the lifting platform, the steel wire rope penetrates through the movable pulley, one end of the steel wire rope is fixed below the guardrail, one end of the steel wire rope is connected with the counterweight, the weight of the counterweight is greater than that of the guardrail, the upper stop block is fixed on the side of the lifting platform, the lower stop block is fixed below the lifting platform, when the lifting platform is lifted to a certain height, the counterweight pulls the guardrail to ascend through the steel wire rope, and when the lifting platform is lowered to the certain height, the guardrail is lowered by means of the self weight. The invention realizes the extension of the guardrail by means of gravity, does not depend on electric drive and other modes for driving, saves energy, does not occupy the space above the lifting platform when the guardrail retracts, and is convenient for vehicles to pass on the platform.

Description

Automatic telescopic guardrail

Technical Field

The invention belongs to the field of protective guardrail application equipment, and particularly relates to an automatic telescopic guardrail convenient to store.

Background

In special applications, such as loading and unloading yards, the lift platform is typically stationary. When goods are loaded into the vehicle, the goods on the lifting platform are carried to the vehicle after the platform is lifted to the same height as the vehicle, and then the platform is descended. In order to facilitate the loading vehicle to pass through, the lifting platform is flush with the ground when being lowered to the lowest position.

When lift platform goes up and down, if the platform does not have the guardrail all around, when lift platform rises to a take the altitude, there is the potential safety hazard that goods or personnel fall. If fixed guardrail is installed around the lifting platform, when the lifting platform descends to the ground, the fixed guardrail can influence the vehicle to pass, and meanwhile, potential safety hazards also exist.

Disclosure of Invention

Aiming at the technical problems, the invention provides the automatic telescopic guardrail convenient to store, which is usually arranged below the lifting platform and level to the ground. Automatic flexible guardrail and lift platform linkage, the guardrail stretches out when lift platform rises promptly, and the guardrail withdrawal when lift platform descends to realize the ascending automation of vertical side and stretch out and draw back, space above the platform is not occupied during the platform withdrawal, satisfies the on-the-spot user demand.

In order to achieve the purpose, the technical scheme adopted by the invention is that the automatic telescopic guardrail comprises a guardrail, a movable pulley, a steel wire rope, a balance weight, an upper stop block, a lower stop block, a guide rod and a guide sleeve. The guide sleeve is fixed on the lifting platform, the guide rod is fixed on the guardrail, and the guide rod can slide up and down in the guide sleeve, so that the movement of the guardrail is restrained, and the guardrail can only move up and down relative to the lifting platform. The movable pulley is fixed in the below of lift platform, and wire rope passes the movable pulley, and one end is fixed in the below of guardrail, and one end is connected with the counter weight, and the weight of counter weight is greater than the weight of guardrail, goes up the dog and fixes in lift platform's side, and lower dog is fixed on lift platform's bottom plate.

When lift platform rose, the movable pulley rose thereupon, and pulling wire rope rose simultaneously, when the wire rope on movable pulley both sides tightened, because the weight of counter weight is greater than the weight of guardrail, at this moment the counter weight did not rise, and the guardrail begins to stretch out relative lift platform to rise simultaneously with lift platform, when the bottom of guardrail was run into down the dog, the guardrail stopped rising for lift platform, still rises together with lift platform and counter weight until lift platform stops.

When the lifting platform descends, the guardrail and the balance weight synchronously descend along with the descending platform, when the balance weight contacts the bottom plate of the lifting mechanism, the balance weight does not pull the guardrail through the steel wire rope, the guardrail descends relative to the lifting platform under the action of self gravity until the upper part of the guardrail contacts with the upper stop block of the lifting platform, and the guardrail stops descending and synchronously descends along with the lifting platform until the lifting platform descends to be flush with the ground.

Preferably, the positions of the upper and lower stoppers are adjustable, and the retraction and extension heights of the guard rail are adjusted by adjusting the positions of the upper and lower stoppers of the guard rail.

Preferably, the length of the wire rope is adjustable, and the height of the lifting platform at which the guardrail begins to extend or retract can be adjusted by adjusting the length of the wire rope.

Preferably, the telescopic speed of the guardrail can be adjusted by adjusting the weight of the counterweight.

Preferably, the movable pulley and the steel wire rope can also be a combination of a chain wheel and a chain

Compared with the prior art, the invention has the advantages and positive effects that:

1. the invention realizes the extension of the guardrail by means of gravity, is not driven by energy consumption modes such as electricity and the like, and saves energy.

2. The guardrail does not occupy the space above the lifting platform when retracting, so that vehicles can conveniently pass on the platform.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.

FIG. 1 is a schematic view of an automatic telescopic fence when a lifting platform is in a lower limit position;

FIG. 2 is a schematic view of an automatic telescopic fence when the lifting platform is in an upper limit position;

in the above figures, 1, a lifting platform; 2. a guardrail; 3. a guide sleeve; 4. An upper stop block; 5. a lower stop block; 6. a guide post; 7. a lifting mechanism base; 8. Balancing weight; 9. A wire rope; 10. a movable pulley; 11. A lifting mechanism.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and thus the present invention is not limited to the specific embodiments of the present disclosure.

Embodiment 1, as shown in fig. 1 and 2, an automatic telescopic guardrail includes a guardrail 2, a movable pulley 10, a steel wire rope 9, a counterweight 8, an upper block 4, a lower block 5, a guide post 6, and a guide sleeve 3. The guide sleeve 3 is fixed on the lifting platform 1, the lifting mechanism 11 can drive the lifting platform 1 to move up and down, the guide pillar 6 is fixed on the guardrail 2, and the guide pillar 6 can slide up and down in the guide sleeve 3, so that the movement of the guardrail is restrained, and the guardrail can only move up and down relative to the lifting platform. The movable pulley 10 is fixed below the lifting platform 1, the steel wire rope 9 penetrates through the movable pulley 10, one end of the steel wire rope is fixed below the guardrail 2, one end of the steel wire rope is connected with the counterweight 8, the weight of the counterweight 8 is larger than that of the guardrail 2, the upper stop block 4 is fixed on the side of the lifting platform 1, and the lower stop block 5 is fixed below the lifting platform 1.

When the lifting platform 1 is driven by the lifting mechanism 11 to ascend, the movable pulley 10 ascends along with the lifting platform 1, the upper stop block 4 on the lifting platform 1 drives the guardrail 2 to ascend synchronously, the steel wire rope 9 is pulled to ascend simultaneously, when the steel wire ropes 9 on two sides of the movable pulley 10 are tightened, because the weight of the counterweight 8 is greater than that of the guardrail 2, the counterweight 8 does not ascend, the guardrail 2 starts to extend upwards relative to the lifting platform 1 and ascends simultaneously with the lifting platform, when the bottom of the guardrail 2 touches the lower stop block 5, the guardrail 2 stops ascending relative to the lifting platform 1, and still ascends together with the lifting platform 1 and the counterweight until the lifting platform stops.

When lift platform 1 descends, guardrail 2, counter weight 8 descend along with it, and when counter weight 8 contacted the last plane of elevating system base 7, counter weight 8 no longer through wire rope pulling guardrail, at this moment guardrail 2 descends for lift platform 1 under the effect of self gravity, and up to guardrail 2 and lift platform 1's last dog 4 contact, guardrail 2 stops to descend and descend along with lift platform 1 synchronous and up to lift platform 1 stops.

Claims

1. The utility model provides an automatic telescopic guardrail, includes guardrail, movable pulley, wire rope, counter weight, goes up dog, guide arm, guide pin bushing, its characterized in that, the guide pin bushing is fixed on lift platform, and the guide arm is fixed on the guardrail, and the movable pulley is fixed in lift platform's below, and wire rope passes the movable pulley, and one end is fixed in the below of guardrail, and one end is connected with the counter weight, goes up the dog and fixes in lift platform's side, and the dog is fixed below lift platform down.

2. An automatic telescopic fence according to claim 1 wherein the guide rod can slide up and down in the guide sleeve to constrain the movement of the fence to only move up and down relative to the lifting platform.

3. The automatic telescopic fence as claimed in claim 1, wherein the weight of the counter weight is greater than the weight of the fence.

4. The automatic retracting fence of claim 1, wherein the positions of the upper and lower stoppers are adjustable, thereby adjusting the retracted and extended heights of the fence.

5. The automatic telescopic fence as claimed in claim 1, wherein the length of the wire rope is adjustable, and the height of the lifting platform at which the fence starts to extend or retract can be adjusted by adjusting the length of the wire rope.

6. The automatic telescopic fence as claimed in claim 1, wherein the speed of fence telescoping can be adjusted by adjusting the weight of the counterweight.

7. The automatic telescopic fence as claimed in claim 1, wherein the movable pulley and the wire rope are a combination of a sprocket and a chain.