Height-adjustable handrail

Abstract

The utility model provides a height-adjustable handrail, which comprises two oppositely arranged upright posts and a plurality of handrails arranged between the upright posts, each upright post comprises a shell and a support post arranged in the shell, the shell comprises a shell body and a first cover plate far away from one side of the handrail, a first chute is arranged on the support post, one end of the support post is fixedly connected with the lower end of the shell, and the other end of the support post is fixedly connected with the handrail. One end of the rope is connected with a balancing weight, the end, away from the balancing weight, of the rope is connected with the lower end of the side, away from the balancing weight, of the supporting column, the multiple railings are connected at intervals through the rope, a sliding way used for limiting the balancing weight is arranged on one side of the first cover plate, and a plug pin used for limiting sliding of the railings is arranged on one side of the stand column. The bolt is arranged near the lower end of the shell. According to the handrail with the adjustable height, the handrail slides in the first sliding groove to adjust the height, and the height is locked under the matched locking of the balancing weight and the plug pin, so that the handrail with the adjustable height can flexibly adjust the height.

Description

Technical Field

[0001] The utility model relates to the technical field of traffic safety facilities, in particular to a height-adjustable handrail. Background Art

[0002] Crossbars are used to separate different construction areas, such as material storage areas, construction operation areas, and pedestrian walkways, ensuring that the functions of each area are clear and avoiding cross interference.

[0003] During construction, safety bars are often used at lifting openings with height differences and compact floor space. When materials need to be transported, these bars cannot be removed or are inconvenient to remove, hindering material transportation. Furthermore, when these bars are removed, it is difficult to restore the required safety features, posing a safety hazard. In existing technologies, most safety bars are fixed, making it impossible to flexibly adjust the height of the bars. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a height-adjustable handrail, which aims to solve the technical problem that the height of the crossbar of the protective crossbar in the prior art cannot be adjusted.

[0005] The lifting mechanism is a set of one or more camshafts, each of which is connected to a first end of the swing arm and a second end of the swing arm, wherein the two swing arms are connected by a hook to form a round shank, and the hook is on the top of the swing arm, and the hook is on the bottom of the swing arm.

[0006] Compared with the prior art, the beneficial effect of the present invention lies in that: by setting a first slide groove on the column, and then limiting the railings connected in series to slide in the first slide groove, free height adjustment can be achieved, and with the cooperation of the pin and the counterweight block, the protective height of the railing can be locked at a specific position.

[0007] According to one aspect of the above technical solution, the pillar is an I-beam structure. The use of the I-beam structure can make the column structure more stable and occupy a small internal space.

[0008] According to one aspect of the above technical solution, the railing includes a cross bar and limit bolts threadedly connected to both ends of the cross bar. Both ends of the cross bar are provided with limit blocks with a width greater than the width of the first slide groove. By adopting this design method, the railing is limited to sliding up and down in the first slide groove and cannot fall off the connection with the slide groove. The limit bolts and the cross bar are arranged to be threadedly connected, which facilitates the disassembly and assembly of the railing and its later storage.

[0009] According to one aspect of the above technical solution, a groove for fixing the rope is provided on the limit block. With this design, by providing a groove on the limit block, the connection between the rope and the limit block is facilitated, while also preventing the rope from falling off the connection with the limit block.

[0010] According to one aspect of the above technical solution, a second slide groove is provided on the first cover plate, and the counterweight block includes a counterweight block body and a locking block for locking the counterweight block body. The counterweight block body is provided with a third slide groove that cooperates with the locked block on the side away from the first cover plate. The counterweight block also includes a turning handle for pushing the locking block. The turning handle is threadedly connected to the counterweight block body through the second slide groove, and one end of the turning handle is rotatably connected to the locking block. With this design, the locking block can be pushed by rotating the turning handle. Finally, under the push of the turning handle, the counterweight block is pressed against the sliding inner wall and locked, thereby preventing the downward height of the railing from changing arbitrarily.

[0011] According to one aspect of the above technical solution, the latch includes a fork portion with a trident shape at one end, and a connecting rod portion that passes through the first cover plate and is connected to the fork portion, the connecting rod portion is rotatably connected to a locking bar, and the rotating shaft is arranged near one end of the fork portion, the fork portion includes two first forks that pass through the pillar, and a second fork located between the two first forks for limiting the railing, and a spring is provided between the connecting rod portion and the pillar. With this design, after pulling the latch, the locking bar on the connecting rod portion can be rotated to a position perpendicular to the connecting rod under the action of gravity, thereby limiting the latch from being retracted under the elastic force of the spring. At this time, both hands can be freed and the height of the railing can be freely adjusted; and when the latch needs to be locked, the locking bar only needs to be rotated to the inside of the connecting portion, parallel to the surface of the connecting portion, and under the elastic force of the spring, the latch returns to the locked position.

[0012] According to one aspect of the above technical solution, the second fork is provided with an inclined surface near one end of the pillar. With this design, when the latch is not unlocked, the gravity of the railing itself can be used to hit the latch. Under the action of the inclined surface, the latch is pushed to overcome the spring force and slide, thereby automatically passing the latch to achieve the function of quickly lowering the height.

[0013] According to one aspect of the above technical solution, the shell also includes a second cover plate away from the first cover plate, and the first cover plate is detachably connected to the second cover plate. By arranging the first cover plate and the second cover plate to form a detachable connection with the shell body, the installation, repair and maintenance of the internal structure are facilitated. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of a height-adjustable handrail structure in one embodiment of the present invention;

[0015] Figure 2 A top view of a pillar in a column in one embodiment of the present utility model;

[0016] Figure 3 This is a structural diagram of a railing in one embodiment of the present utility model;

[0017] Figure 4 This is a cross-sectional view of the first cover plate and the configuration block in one embodiment of the present invention;

[0018] Figure 5 This is a schematic structural diagram of a latch in one embodiment of the present utility model;

[0019] Explanation of the main component symbols: 1-post, 2-rail, 21-crossbar, 211-limit block, 212-groove, 22-limit bolt, 221-head, 222-strip, 3-housing, 31-first cover plate, 311-slide, 312-second slide, 32-second cover plate, 4-pillar, 41-first slide, 5-pulley, 6-rope, 7-configuration block, 71-counterweight body, 72-third slide, 73-locking block, 74-handle, 8-latch, 81-fork, 811-first fork, 812-second fork, 813-inclined surface, 82-connecting part, 821-locking bar, 9-spring;

[0020] The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0021] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be provided below with reference to the accompanying drawings. The drawings illustrate several embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present invention.

[0022] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are intended only to describe specific embodiments and are not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0024] See also Figures 1 to 2 The height-adjustable handrail provided by one embodiment of the present invention comprises two columns 1 arranged opposite to each other, and a plurality of handrails 21 arranged between the columns 1. It can be understood that the structures of the two columns 1 are exactly the same; the column 1 comprises a shell 3, and a pillar 4 arranged inside the shell 3, the shell 3 comprises a shell body 3, and a first cover plate 31 fixedly connected to the shell body 3 on a side away from the handrail 21, wherein the column 1 is connected to a steel plate embedded in the ground through the lower end of its shell 3 to achieve a standing posture; the pillar 4 is provided with a means for limiting the position of the handrail 21 A sliding first slide groove 41, one end of the pillar 4 is fixedly connected to the lower end of the shell 3, and the other end is provided with a pulley 5, and a rope 6 is provided on the pulley 5. One end of the rope 6 is connected to a counterweight block 7, and the end of the rope 6 away from the counterweight block 7 is connected to the lower end of the pillar 4 away from the counterweight block 7. Multiple railings 21 are connected at intervals by the rope 6, and one side of the first cover plate 31 is provided with a slideway 311 for limiting the counterweight block 7, and one side of the column 1 is provided with a pin 8 for limiting the sliding of the railing 21, and the pin 8 is arranged close to the lower end of the shell 3.

[0025] Furthermore, the pillar 4 is an I-beam structure. By setting the pillar 4 into an I-beam shape and installing it inside the shell, the two side plates of the I-beam structure are fitted and fixedly connected to the shell 3 to form a whole, thereby reinforcing the strength of the shell 3 structure. A first slide groove 41 is provided on the middle steel plate of the I-beam-shaped pillar 4, and the railing 21 is fixed in the first slide groove 41 and can slide up and down.

[0026] See also Figure 3In this embodiment, the railing 21 is composed of a cross bar 2 and a limiting bolt 22. Specifically, the railing 21 includes a cross bar 2 and a limiting bolt 22 threadedly connected to both ends of the cross bar 2. Both ends of the cross bar 2 are provided with limiting blocks 211 whose width is greater than the width of the first slide groove 41; by setting the cross bar 2 and the limiting bolt 22 to be threadedly connected, the installation and disassembly of the railing 21 are facilitated; and a limiting block 211 is provided at one end of the cross bar 2. Since the width of the limiting block 211 is greater than that of the first slide groove 41, the railing 21 cannot fall off the first slide groove 41 and slide left and right, and can only move up and down along the first slide groove 41. In this embodiment, multiple railings 21 are connected by ropes 6. In order to facilitate the fixation of the ropes 6, the limit blocks 211 are further provided with grooves 212 for fixing the ropes 6. The provision of the grooves 212 facilitates the installation of the ropes 6 and prevents the ropes 6 from sliding left and right at will. It should be noted that the ropes 6 are socketed and fixed to the limit blocks 211. When the railings 21 are rotated, the ropes 6 will not rotate together. With this design, when disassembling the railings 21, there is no need to disassemble the ropes 6 first, but the cross bar 2 can be directly rotated to disassemble. In addition, the number of railings 21 can be determined by the size of the spacing between them and the height of the columns 4. In this embodiment, there are ten railings.

[0027] See also Figure 3 In this embodiment, in order to facilitate the sliding of the railing 21 on the first slide 41, the limiting bolt 22 is designed to have a light rod structure in the middle. After the limiting bolt 22 is connected to the cross bar 2, the head 221 of the limiting bolt 22 and the limiting block 211 are exactly spaced apart by a light rod portion 222. The length of the light rod portion 222 is the same as the thickness of the middle steel plate of the I-beam, so that the railing 21 can slide up and down smoothly along the slide without shaking left and right.

[0028] See also Figure 4When the cam 72 is in the unlock state, the locking cam 73 is locked and the locking cam 73 is locked, so that the cam 72 can be unlocked and the locking cam 73 is locked. When locking sill 77a is in the state of being grasped, the latch of latch 7 is in the state of being grasped, and latch has been locked in the state of being grasped, and locking sill 77 is in the state of being grasped, and locking sill 77b is in the state of being grasped, and the bolt 71 of bolt 73b is in the state of being grasped. In addition, since the handle 74 needs to slide up and down with the counterweight 7 and the handle 74 needs to extend out of the outer shell 3 for easy adjustment, a second sliding groove 312 is required on the first cover plate 31 to prevent the handle 74 from sliding.

[0029] See also Figure 5In this embodiment, a latch 8 is provided at the lower end of the housing 3, wherein the fork 81 of the latch 8 is plugged into the pillar 4, and the connecting portion 82 of the latch 8 is provided through the first cover plate 31. Specifically, the latch 8 includes a fork 81 with a trident shape at one end, and a connecting rod portion that passes through the first cover plate 31 and is connected to the fork 81. The connecting rod portion is rotatably connected to a locking bar 821, and the rotating shaft of the locking bar 821 is provided near one end of the fork 81. The fork 81 includes two third forks provided through the pillar 4. A fork 811, and a second fork 812 located between the two first forks 811 for limiting the railing 21, a spring 9 is provided between the connecting rod and the pillar 4, it should be noted that the first fork 811 is not provided on both sides of the first slide groove 41, for supporting and guiding the sliding of the pin 8; and the second fork 812 is shorter than the first fork 811, and the pin 8 limits the head 221 of the limiting bolt 22 through the second fork 812 to achieve limitation of the railing 21.

[0030] See also Figure 5In this embodiment, since the weight of the counterweight 7 is greater than the total weight of the multiple railings 21, if the height of the railing 21 needs to be lowered, it is necessary to first unlock the latch 8 and the counterweight 7, and then adjust the top railing 21 to slide up and down to a certain height, and then lock the counterweight 7 or the latch 8 to complete the height adjustment. Obviously, this process requires two people to operate together, which is very inconvenient. For this reason, a slope 813 is set on the second bifurcation 812, and the slope 813 is used to form a one-way conduction feature. When the height of the railing 21 needs to be lowered, it is only necessary to unlock the counterweight 7 and lock it. By pressing the top railing 21, the lower railing 21 slides down under the action of gravity. After the railing 21 touches the inclined surface 813, it will overcome the elastic force of the spring 9 to push the latch 8 open and fall into the lower end of the latch 8. After losing the thrust, the latch 8 returns to the locked state under the elastic force of the spring 9, thereby locking the railing 21 that has fallen into the lower end of the latch 8, thereby forming a one-way conduction feature; preferably, the second fork 812 is provided with an inclined surface 813 near the end of the pillar 4; it should be noted that during this process, the latch 8 is in a semi-unlocked state, not a fully unlocked state. When the railing 21 needs to be raised, the latch 8 needs to be fully unlocked. By pulling the connecting portion 82 and after it has been pulled down a certain distance, the lock bar 821 installed on the connecting portion 82 is in an unbalanced rotational connection with the connecting portion 82. One end of the lock bar 821 rotates under the action of gravity and finally becomes perpendicular to the connecting portion 82, restricting the latch 8 from being pulled back by the spring 9, thereby releasing the limit of the second branch 812 on the limit bolt 22, and achieving full unlocking of the latch 8. The height of the railing 21 can then be freely adjusted. When locking, it is only necessary to rotate the end of the lock bar 821 that is farther from the rotation axis than the lever arm until it is parallel to the connecting portion 82. Under the action of the spring 9, it automatically returns to the locked state. It should be noted that both ends of the lock bar 821 have rounded corners, which facilitates automatic alignment when locking, making it convenient and quick to lock. In addition, the distance between the lowest end of the latch 8 and the first slide 41 is equal to the superimposed height of all the railings 21. It can be understood that when the uppermost railing 21 is locked by the latch 8, it is also the lowest limit height of the railing 21.

[0031] In this embodiment, in order to facilitate the installation, maintenance and repair of the structure inside the column 1, the first cover plate 31 and the second cover plate 32 of the outer shell 3 are detachably connected to the outer shell 3 body. Specifically, the outer shell 3 also includes a second cover plate 32 away from the first cover plate 31, and the first cover plate 31 and the second cover plate 32 are detachably connected.

[0032] In summary, the height-adjustable railings in the above-mentioned embodiments of the present invention achieve variable height characteristics by forming a sliding connection between the railings and pillars connected in series, and the height is fixed with the cooperation of the configuration blocks and the pins, so that the height of the railings of the present invention can be flexibly adjusted.

[0033] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0034] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A height-adjustable railing, characterized in that: The lifting link lever is connected with the support frame of the lifting link lever of the lifting link to the support frame, and the lifting link lever is connected with the support frame of the lifting link to the support frame.

2. The height-adjustable handrail according to claim 1, characterized in that The support column is an I-steel structure.

3. The height-adjustable handrail according to claim 2, characterized in that The railing includes a cross bar and limiting bolts threadedly connected to both ends of the cross bar. Both ends of the cross bar are provided with limiting blocks with a width greater than the width of the first sliding groove.

4. The height-adjustable handrail according to claim 3, characterized in that The limiting block is provided with a groove for fixing the rope.

5. The height-adjustable handrail according to claim 4, characterized in that A second slide groove is provided on the first cover plate, and the counterweight block includes a counterweight block body and a locking block for locking the counterweight block body. A third slide groove is provided on the side of the counterweight block body away from the first cover plate to cooperate with the locking block. The counterweight block also includes a turning handle for pushing the locking block. The turning handle passes through the second slide groove and is threadedly connected to the counterweight block body, and one end of the turning handle is rotatably connected to the locking block.

6. The height-adjustable handrail according to claim 1, characterized in that The latch includes a fork portion with a trident shape at one end, and a connecting rod portion that passes through the first cover plate and is connected to the fork portion. The connecting rod portion is rotatably connected to a lock bar, and the lock bar shaft is set near one end of the fork portion. The fork portion includes two first forks set through the pillar, and a second fork located between the two first forks for limiting the railing. A spring is provided between the connecting rod portion and the pillar.

7. The height-adjustable handrail according to claim 6, characterized in that The second fork is provided with an inclined surface at one end close to the support.

8. The height-adjustable handrail according to claim 1, wherein: The housing further includes a second cover plate away from the first cover plate, and the first cover plate is detachably connected to the second cover plate.

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