Handrail

Abstract

The utility model discloses a handrail, which relates to the technical field of public facilities and comprises a base, a support and an adjusting component, and the base has a first direction and a second direction which are perpendicular to each other; the support comprises a transverse rod and two stand columns, the stand columns are arranged on the base in the second direction, the transverse rod is arranged between the two stand columns in the first direction, an adjusting pipe is arranged at the end, away from the base, of each stand column, and the end of the transverse rod is arranged in the adjusting pipe in a penetrating mode and can slide in the adjusting pipe; the adjusting assembly comprises an adjusting block and a sliding rail, the sliding rail is fixedly installed on the base, the adjusting block is slidably connected to the sliding rail, the end, away from the adjusting pipe, of the stand column is fixedly connected to the adjusting block, a rack is fixedly installed on the sliding rail, the adjusting block is provided with a gear, the gear is meshed with the rack, and the gear is connected with a driving device. The driving device drives the gear to move along the rack and drives the adjusting block to move along the sliding rail, then the two stand columns of the support are driven to be close to or away from each other, the distance between the handrails is rapidly adjusted, and the operation convenience of adjusting the distance between the handrails is improved.

Description

Technical Field

[0001] This utility model relates to the field of public facilities technology, and in particular to a railing. Background Technology

[0002] In urban public squares, parks, pedestrian streets, and other locations, railings effectively separate pedestrian and vehicular traffic, reducing the risk of traffic accidents. Furthermore, railings serve to demarcate dangerous areas, provide guidance, and beautify the environment. Currently, traditional railings have fixed spacing, making it difficult to flexibly adjust them according to actual site conditions and hindering time-based management. Existing adjustable-spacing railings, however, suffer from low adjustment efficiency, making it difficult to quickly adjust railing spacing during emergency evacuations or the entry / exit of large equipment, thus failing to meet the requirements for rapidly adjusting passageway width. Utility Model Content

[0003] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide a railing that can flexibly adjust the railing spacing and improve the ease of operation of adjusting the railing spacing.

[0004] To achieve the above objectives, this utility model provides a railing, comprising: a base, a support, and an adjustment assembly. The base has a first direction and a second direction perpendicular to each other. The support includes a crossbar and two uprights. The uprights are disposed on the base along the second direction, and the crossbar is disposed between the two uprights along the first direction. An adjustment tube is provided at the end of each upright away from the base, and the end of the crossbar passes through the adjustment tube, allowing the crossbar to slide along the first direction within the adjustment tube. The adjustment assembly includes an adjustment block and a slide rail. The slide rail is fixedly installed on the base, and the adjustment block is slidably connected to the slide rail. The end of each upright away from the adjustment tube is fixedly connected to the adjustment block. A rack is fixedly installed on the slide rail. The slide rail and the rack are respectively arranged along the first direction. The adjustment block is provided with a gear that meshes with the rack. The gear is connected to a driving device. The driving device can drive the gear to move along the rack, thereby causing the adjustment block to move on the slide rail, and consequently causing the two uprights of the support to move closer or further apart.

[0005] The railing described in this utility model has at least the following beneficial effects: When the adjusting block moves the two uprights of the two supports closer or further apart, the crossbar can slide along the first direction within the adjusting tube, allowing for adjustable support length. This enables flexible adjustment of the railing spacing, allowing for adjustments based on actual application scenarios. Because the adjusting block is equipped with a gear, and a rack is fixedly installed on the slide rail, with the gear meshing with the rack; the driving device drives the gear to move along the rack, which in turn moves the adjusting block along the slide rail, causing the two uprights of the supports to move closer or further apart, achieving rapid adjustment of the railing spacing and improving the ease of operation for adjusting the railing spacing.

[0006] According to the present invention, a railing is provided in the base, the adjustment component is located in the installation cavity, the base is provided with a sliding groove along the first direction, the sliding groove is connected to the installation cavity, and one end of the column passes through the sliding groove and is fixedly connected to the adjustment block.

[0007] According to the present invention, in a railing, the adjusting block is provided with a mounting plate, the mounting plate extends from the surface of the adjusting block along the second direction and passes through the sliding groove, and the end of the column away from the adjusting tube is fixedly connected to the mounting plate.

[0008] According to the present invention, a railing is provided with a plug groove at the end of the post away from the adjusting pipe, and the mounting plate is plugged into the plug groove.

[0009] According to the present invention, in a railing, the bottom surface of the adjusting block is provided with an opening, the rack is fixed to the upper surface of the slide rail, the rack passes through the opening, and the gear is located inside the opening.

[0010] According to the present invention, the base further has a third direction, wherein the first direction, the second direction, and the third direction are mutually perpendicular; the adjusting block is provided with a moving groove, the moving groove is connected to the opening, and along the third direction, the width of the moving groove is greater than the width of the opening, the moving groove extends along the first direction, and the slide rail abuts against the moving groove at both ends along the third direction.

[0011] According to the present invention, the inner wall of the adjusting tube is provided with an abutment block, and the outer wall of the crossbar is provided with a positioning groove extending in a first direction, and the abutment block is slidably connected to the positioning groove.

[0012] According to the present invention, a railing is provided in the middle of the crossbar, and the positioning groove has limiting portions at both ends in the first direction. The abutting block can abut against the limiting portions to prevent the crossbar from disengaging from the adjusting tube.

[0013] According to the present invention, a railing is provided with an abutment block on the inner wall of the adjusting tube and two sets of retaining rings on the outer wall of the crossbar. Along the first direction, the two sets of retaining rings are located at both ends of the crossbar. The retaining rings extend outward from the outer wall of the crossbar and abut against the abutment block to prevent the crossbar from disengaging from the adjusting tube.

[0014] According to the present invention, a railing is provided with n supports and n+1 bases, where n≥2. Each support column is connected to a different base, and the two closest columns of two adjacent supports are connected to the same base.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0017] Figure 1 This is a schematic diagram of the structure of a railing in an embodiment of the present utility model;

[0018] Figure 2 for Figure 1 Enlarged view of part A in the middle;

[0019] Figure 3 This is another structural schematic diagram of a railing in an embodiment of the present utility model;

[0020] Figure 4 for Figure 3 A sectional view of the BB section;

[0021] Figure 5 for Figure 4 Enlarged view of section C;

[0022] Figure 6 This is a schematic diagram of the crossbar structure in an embodiment of this utility model.

[0023] Figure label:

[0024] Base 100; Mounting cavity 110; Slide groove 120;

[0025] 200; 210; 211; 212; 220; 221; 222; 223; 220; 221; 222; 223;

[0026] Adjustment component 300; adjustment block 310; mounting plate 311; opening 312; moving groove 313; slide rail 320; rack 330; gear 340; drive device 350. Detailed Implementation

[0027] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the description of the textual part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0028] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0030] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0031] Reference Figure 1 and Figure 3This utility model provides a railing, including a base 100, a support 200, and an adjustment assembly 300. The base 100 has a first direction and a second direction that are perpendicular to each other. The support 200 includes a crossbar 210 and two uprights 220. The uprights 220 are disposed on the base 100 along the second direction, with one end connected to the base 100 and extending along the second direction. An adjustment tube 221 is provided at the end of the uprights 220 away from the base 100, and the adjustment tube 221 extends along the first direction. The crossbar 210 is disposed between the two uprights 220 along the first direction, and the end of the crossbar 210 passes through the adjustment tube 221, allowing the crossbar 210 to slide along the first direction within the adjustment tube 221. The two ends of the crossbar 210 are respectively inserted into the adjusting tubes 221 of the two columns 220. Since the crossbar 210 can slide in the first direction within the adjusting tube 221, the relative position of the crossbar 210 and the adjusting tube 221 can be adjusted, thereby making the length of the bracket 200 adjustable in the first direction, and thus making the length of the railing adjustable, so that the railing can flexibly adjust the spacing according to the actual application scenario.

[0032] It is understood that in some embodiments of this utility model, the base 100 has a first direction and a second direction that are perpendicular to each other. The first direction is the length direction of the base 100, and the second direction is the height direction of the base 100, that is, the second direction is the vertical direction of the base 100. The base 100 also has a third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0033] Reference Figure 2In some embodiments of this utility model, the adjusting component 300 includes an adjusting block 310 and a slide rail 320. The slide rail 320 is fixedly installed on the base 100 and is arranged along a first direction. The adjusting block 310 is slidably connected to the slide rail 320, allowing the adjusting block 310 to slide along the slide rail 320 in the first direction. One end of the column 220 away from the adjusting tube 221 is fixedly connected to the adjusting block 310. A rack 330 is fixedly installed on the upper surface of the slide rail 320 along a second direction, and the rack 330 is arranged along the first direction. The adjusting block 310 is provided with a gear 340, which meshes with the rack 330. The gear 340 is connected to a driving device 350, which can drive the gear 340 to move along the rack 330. Since the gear 340 of the adjusting block 310 meshes with the rack 330 of the slide rail 320, the gear 340 is driven by the driving device 350 to move along the rack 330, causing the adjusting block 310 to slide along the slide rail 320 in the first direction. This, in turn, causes the two columns 220 of the bracket 200 to move closer or further apart. At this time, the crossbar 210 slides in the adjusting tube 221 in the first direction to adjust the relative position between the crossbar 210 and the adjusting tube 221, thus allowing the spacing of the railings to be flexibly adjusted. Driven by the driving device 350, the spacing of the railings can be quickly adjusted, improving the ease of operation and efficiency of adjusting the railing spacing.

[0034] It is understood that in some embodiments of this utility model, if it is necessary to adjust the railing spacing, the adjusting block 310 connected to one of the columns 220 of the adjusting bracket 200 can be moved along the first direction, and the crossbar 210 can slide relative to the adjusting tube 221, thereby adjusting the relative position of the two columns 220 along the first direction to adjust the length of the bracket 200, thereby achieving flexible adjustment of the railing spacing; or the two sets of adjusting blocks 310 connected to the two columns 220 can be adjusted to move closer or further apart to flexibly adjust the length of the bracket 200, which improves the efficiency of adjusting the railing spacing and quickly meets the requirements of adjusting the width of the passage.

[0035] It is understood that in some embodiments of this utility model, if it is necessary to adjust the position of the railing in the first direction, the two sets of adjusting blocks 310 connected to the two columns 220 can be adjusted to move in the same direction, so that the railing can maintain the same spacing and move along the first direction, thereby realizing the position adjustment of the railing in the first direction, reducing the accuracy of the railing installation on the ground, and improving the flexibility of the railing application.

[0036] It is understood that in some embodiments of this utility model, the drive device 350 is installed on the adjustment block 310. The drive device 350 has a self-locking state. When the drive device 350 is in the self-locking state, the drive device 350 cannot control the rotation of the gear 340, that is, the gear 340 cannot move along the rack 330. This prevents the gear 340 from moving along the rack 330 under the action of external force, thereby preventing the two columns 220 from getting closer or further apart under the action of external force, ensuring the accuracy of the railing adjustment distance and improving the stability of the railing.

[0037] It is understood that in some embodiments of this utility model, the driving device 350 may be a motor or other mechanical device capable of driving the gear 340 to move along the rack 330, and this application does not limit it.

[0038] It is understood that in some embodiments of this utility model, the drive device 350 may be preset with multiple adjustment gears. The gear 340 is adjusted relative to the rack 330 according to the preset adjustment gear. By switching different adjustment gears, the spacing of the railings can be adjusted to adapt to various environmental needs, making the adjustment of the railing spacing more accurate, improving the ease of operation of adjusting the railing spacing, and reducing operation time and complexity.

[0039] Reference Figure 2 In some embodiments of this utility model, it is understood that the base 100 is provided with an installation cavity 110, the adjustment component 300 is located in the installation cavity 110, and the upper wall of the base 100 is provided with a sliding groove 120, which is arranged along a first direction. The sliding groove 120 communicates with the installation cavity 110, and one end of the column 220 passes through the sliding groove 120 and is fixedly connected to the adjustment block 310. When the adjustment block 310 slides along the slide rail 320, it drives the column 220 to move along the sliding groove 120. Since one end of the column 220 passes through the sliding groove 120 and moves along the sliding groove 120 when adjusting the spacing of the railings, the possibility of the column 220 shifting during movement is reduced, and the structural stability of the railing is improved. Because the base 100 has an installation cavity 110, the installation cavity 110 provides installation space for the adjustment component 300, protects the adjustment component 300, reduces the risk of the adjustment component 300 being exposed to the outside and damaged, reduces the possibility of dust and other contaminants entering the adjustment component 300, ensures the working stability of the adjustment component 300, and improves the aesthetics of the railing.

[0040] Reference Figure 2In some embodiments of this utility model, it is understood that the adjusting block 310 is provided with a mounting piece 311, which extends from the upper surface of the adjusting block 310 along the second direction and passes through the slide groove 120. The end of the column 220 away from the adjusting tube 221 is fixedly connected to the mounting piece 311. Since the mounting piece 311 passes through the slide groove 120 and one end of the column 220 is fixedly connected to the mounting piece 311, when the adjusting block 310 moves along the slide rail 320, it drives the mounting piece 311 to move along the slide groove 120, thereby driving the column 220 to move along the first direction. When manufacturing the railing, the mounting plate 311 and the adjusting block 310 are produced as a single piece. By passing the mounting plate 311 through the slide rail 320 and connecting the adjusting block 310 to the slide rail 320 inside the base 100, that is, after the adjusting component 300 is installed on the base 100, the column 220 of the bracket 200 is fixedly connected to the mounting plate 311. This reduces the assembly difficulty of the railing and simplifies the assembly process.

[0041] Reference Figure 2 and Figure 4 In some embodiments of this utility model, the adjusting block 310 is provided with a mounting piece 311, which extends from the upper surface of the adjusting block 310 along the second direction and passes through the sliding groove 120. The end of the column 220 away from the adjusting tube 221 is provided with a plug groove 222, and the mounting piece 311 is plugged into the plug groove 222, which facilitates the installation and positioning of the column 220 and improves the assembly efficiency of the railing.

[0042] It is understood that in some embodiments of this utility model, the column 220 is provided with a plug groove 222, the adjusting block 310 is provided with a mounting piece 311, the mounting piece 311 is plugged into the plug groove 222, and the diameter of the column 220 is greater than the width of the slide groove 120 in the second direction, which reduces the risk of contaminants entering the mounting cavity 110 through the slide groove 120, thereby reducing the risk of damage to the adjusting component 300 and improving the structural stability of the adjusting component 300.

[0043] It is understood that in some embodiments of this utility model, the mounting plate 311 and the post 220 are fixedly connected by welding. Since the mounting plate 311 is inserted into the insertion slot 222 and fixed by welding, the welding area between the mounting plate 311 and the post 220 is increased, the connection strength between the mounting plate 311 and the post 220 is increased, and the structural stability of the railing is improved.

[0044] Reference Figure 2 and Figure 4In some embodiments of this utility model, the bottom surface of the adjusting block 310 is provided with an opening 312, which extends along a first direction. The rack 330 is fixed to the upper surface of the slide rail 320 and passes through the opening 312. The gear 340 is located inside the opening 312, that is, the meshing part of the gear 340 and the rack 330 is located inside the opening 312, which reduces the risk of the gear 340 coming into contact with contaminants, thereby reducing the risk of the gear 340 being damaged and enhancing the durability of the adjusting assembly 300. Since the meshing of the gear 340 and the rack 330 is set inside the opening 312 of the adjusting block 310, the structure of the adjusting assembly 300 is more compact, improving space utilization.

[0045] Reference Figure 4 In some embodiments of this utility model, the base 100 is further provided with a third direction, wherein the first direction, the second direction, and the third direction are mutually perpendicular. The adjusting block 310 is provided with a moving groove 313, which extends along the first direction. The two ends of the slide rail 320 along the third direction abut against the moving groove 313, so that the adjusting block 310 can be slidably connected to the slide rail 320 along the first direction. Since the two ends of the slide rail 320 along the third direction abut against the moving groove 313, the slide rail 320 provides stable support for the adjusting block 310, thereby improving the structural stability of the adjusting assembly 300. The moving groove 313 communicates with the opening 312. Along the third direction, the width of the moving groove 313 is greater than the width of the opening 312, which facilitates the installation of the adjusting block 310 on the slide rail 320 and improves the assembly convenience of the adjusting assembly 300.

[0046] Reference Figure 5 and Figure 6 In some embodiments of this utility model, the inner wall of the adjusting tube 221 is provided with an abutment block 223, and the outer wall of the crossbar 210 is provided with a positioning groove 211. The positioning groove 211 extends along a first direction, and the abutment block 223 is slidably connected to the positioning groove 211. When the crossbar 210 slides in the adjusting tube 221, the abutment block 223 slides along the positioning groove 211, providing guidance for the movement of the crossbar 210 relative to the adjusting tube 221, improving the stability of the movement of the crossbar 210 in the adjusting tube 221, reducing the risk of rotational swaying during the movement of the crossbar 210, and thus improving the transmission efficiency of the two columns 220 of the bracket 200 moving closer or further apart to drive the crossbar 210 relative to the adjusting tube 221.

[0047] Reference Figure 5 and Figure 6In some embodiments of this utility model, the positioning groove 211 is provided in the middle of the crossbar 210, and the positioning groove 211 has limiting parts 212 at both ends in the first direction. The abutment block 223 can abut against the limiting parts 212 to prevent the abutment block 223 from disengaging from the positioning groove 211, thereby preventing the crossbar 210 from disengaging from the adjusting tube 221. This improves the connection stability between the crossbar 210 and the adjusting tube 221 and reduces the risk of the crossbar 210 disengaging from the adjusting tube 221 under external force.

[0048] Understandably, referring to Figure 6 In some embodiments of this utility model, the positioning groove 211 is located in the middle of the crossbar 210, that is, along the first direction. The length of the positioning groove 211 is less than the length of the crossbar 210. The limiting part 212 can be the end face of the positioning groove 211 along the first direction. The abutting block 223 abuts against the end of the positioning groove 211 to prevent the abutting block 223 from disengaging from the positioning groove 211, thereby preventing the crossbar 210 from disengaging from the adjusting tube 221 and improving the structural stability of the bracket 200.

[0049] It is understood that in some other embodiments of this utility model, the inner wall of the adjusting tube 221 is provided with an abutment block 223, and the outer wall of the crossbar 210 is provided with two sets of retaining rings. The retaining rings extend from the outer wall of the crossbar 210 in a direction away from its central axis. Along the first direction, the two sets of retaining rings are located at both ends of the crossbar 210. The retaining rings can abut against the abutment block 223 to prevent the crossbar 210 from disengaging from the adjusting tube 221, thereby reducing the risk of the crossbar 210 disengaging from the adjusting tube 221 under external force and improving the structural stability of the bracket 200.

[0050] It is understood that in some embodiments of this utility model, the surface of the bracket 200 is provided with a reflective warning strip, which can remind pedestrians and vehicles to pay attention to the existence of the railing and reduce the risk of collision accidents.

[0051] Reference Figure 1 and Figure 3In some embodiments of this utility model, there are n supports 200 and n+1 bases 100, where n≥2. Each support 200 has a column 220 connected to a different base 100, reducing the length of the base 100 along the first direction and saving construction costs. Two relatively close columns 220 of two adjacent supports 200 are connected to the same base 100. When adjusting the spacing between adjacent supports 200, since the two relatively close columns 220 of two adjacent supports 200 are connected to the same base 100, adjusting the two columns 220 connected to the same base 100 to move closer or further apart flexibly adjusts the spacing between the two adjacent supports 200, allowing for rapid adjustment of the passage width between the two supports 200, enabling the railing to quickly respond to different spacing requirements. Since the two relatively close columns 220 of two adjacent brackets 200 are connected to the same base 100, when multiple brackets 200 are set, the number of bases 100 is reduced, construction costs are saved, installation and positioning between adjacent brackets 200 are facilitated, and assembly efficiency is improved.

[0052] It is understood that in some embodiments of this utility model, an installation groove is excavated in the ground for installing the base 100. A concrete layer is provided on the bottom surface of the installation groove, and the base 100 is fixed to the concrete layer with expansion bolts, thus fixing the base 100 to the ground. This improves the stability of the railing and reduces the risk of it tipping over when subjected to external impact. The sliding groove 120 on the upper surface of the base 100 is exposed to the ground, allowing the mounting piece 311 to pass through the sliding groove 120 and connect to the post 220. By installing the base 100 underground, the impact of the base 100 on pedestrians and vehicles is reduced, and the aesthetics of the railing are improved.

[0053] It is understood that in some embodiments of this utility model, for environments where it is inconvenient to excavate installation trenches in the ground, the base 100 can be directly installed on the ground. The installation method of the base 100 can be selected according to the usage scenario, and this application does not limit it here.

[0054] In one embodiment of this utility model, when adjusting the spacing of a railing, the driving device 350 drives the gear 340 to slide along the rack 330, and drives the column 220 to slide relative to the base 100 in a first direction, so that the crossbar 210 slides relative to the adjusting tube 221, thereby adjusting the distance between each column 220, so as to flexibly adjust the spacing of the railing, thereby realizing the quick adjustment of the spacing of the railing and improving the ease of operation of adjusting the spacing of the railing.

[0055] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions 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 one or more embodiments or examples.

[0056] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A railing, characterized in that, include: A base having a first direction and a second direction that are perpendicular to each other; The support includes a crossbar and two uprights. The uprights are disposed on the base along the second direction, and the crossbar is disposed between the two uprights along the first direction. An adjustment tube is provided at the end of the uprights away from the base. The end of the crossbar passes through the adjustment tube and can slide along the first direction within the adjustment tube. An adjustment assembly includes an adjustment block and a slide rail. The slide rail is fixedly installed on the base, and the adjustment block is slidably connected to the slide rail. One end of the column away from the adjustment tube is fixedly connected to the adjustment block. A rack is fixedly installed on the slide rail. The slide rail and the rack are respectively arranged along the first direction. The adjustment block is provided with a gear, which meshes with the rack. The gear is connected to a drive device. The drive device can drive the gear to move along the rack, thereby causing the adjusting block to move on the slide rail, and in turn causing the two columns of the bracket to move closer or further apart.

2. The railing according to claim 1, characterized in that: The base has an installation cavity, the adjustment component is located in the installation cavity, the base has a sliding groove arranged along the first direction, the sliding groove is connected to the installation cavity, and one end of the column passes through the sliding groove and is fixedly connected to the adjustment block.

3. The railing according to claim 2, characterized in that: The adjusting block is provided with a mounting plate, which extends from the surface of the adjusting block along the second direction and passes through the sliding groove. The end of the column away from the adjusting tube is fixedly connected to the mounting plate.

4. The railing according to claim 3, characterized in that: The end of the column away from the adjusting pipe is provided with a plug groove, and the mounting plate is plugged into the plug groove.

5. The railing according to claim 3, characterized in that: The bottom surface of the adjusting block is provided with an opening, the rack is fixed to the upper surface of the slide rail, the rack passes through the opening, and the gear is located inside the opening.

6. The railing according to claim 5, characterized in that: The base also has a third direction, wherein the first direction, the second direction, and the third direction are mutually perpendicular; The adjusting block is provided with a moving groove, which is connected to the opening. Along the third direction, the width of the moving groove is greater than the width of the opening. The moving groove extends along the first direction, and the two ends of the slide rail along the third direction abut against the moving groove.

7. The railing according to claim 1, characterized in that: The inner wall of the regulating tube is provided with an abutment block, and the outer wall of the crossbar is provided with a positioning groove extending in a first direction. The abutment block is slidably connected to the positioning groove.

8. The railing according to claim 7, characterized in that: The positioning groove is located in the middle of the crossbar, and the positioning groove has limiting portions at both ends in the first direction. The abutment block can abut against the limiting portions to prevent the crossbar from disengaging from the adjusting tube.

9. The railing according to claim 1, characterized in that: The inner wall of the regulating tube is provided with an abutment block, and the outer wall of the crossbar is provided with two sets of retaining rings. Along the first direction, the two sets of retaining rings are located at both ends of the crossbar. The retaining rings extend outward from the outer wall of the crossbar and abut against the abutment block to prevent the crossbar from disengaging from the regulating tube.

10. The railing according to any one of claims 1 to 9, characterized in that: The brackets are configured as n, and the bases are configured as n+1, where n≥2. Each bracket's column is connected to a different base, and the two closest columns of two adjacent brackets are connected to the same base.

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