Protective fence with changeable length and height

Abstract

The invention discloses a protective fence capable of changing length and height, which comprises a central mounting plate, a left gear and a right gear are rotatably connected to one side of the central mounting plate, the left gear is meshed with the right gear, and one side of the left gear and one side of the right gear are fixedly connected with second connecting rods; the width adjusting assembly further comprises a left base and a right base, a first connecting rod is rotationally connected to one side of the side supporting plate, an auxiliary supporting plate is rotationally connected to one end of the first connecting rod, and one end of a second connecting rod is rotationally connected with the auxiliary supporting plate. According to the protective fence with the length and the height, through cooperation of the first connecting rods and the second connecting rods, the side edge supporting plates and the auxiliary supporting plates can move left and right, the blocking effect is achieved, meanwhile, the width adjusting effect can be achieved, the adjusted width can be freely controlled, and the protective fence can adapt to different notch sizes.

Description

Technical Field

[0001] The invention relates to the technical field of construction engineering equipment, in particular to a guardrail with variable length and height. Background Art

[0002] Construction engineering is a rapidly developing industry with a wide range of impacts. Construction sites can be seen everywhere, and at construction sites, guardrails are usually installed to prevent non-construction personnel from entering the construction area, which can protect the construction site. At the same time, after a construction project is completed, the guardrail will be moved to the next construction site, and it is used frequently.

[0003] The "A construction engineering guardrail" disclosed in patent publication number "CN219261946U" includes an upper rail and a lower rail, and the upper rail and the lower rail are movably installed; the upper rail includes an upper plate, mounting posts located on both sides of the bottom of the upper plate, and a plurality of sleeves located between the two mounting posts, and threaded holes extending in the vertical direction are formed on the mounting posts; the lower rail includes a lower plate, screws located on both sides of the top of the lower plate, and a plurality of connecting rods located between the two screws, and the lower end of the screw is rotatably installed on the top of the upper plate, the screw cooperates with the threaded hole, and the connecting rod is slidably connected with the sleeve. In this case, the upper rail and the lower rail are movably installed, the screw of the lower rail is threadedly connected to the mounting post of the upper rail, and the upper rail is driven up and down by the screw, so as to adjust the height of the guardrail to meet different installation requirements, reduce workload, and improve installation efficiency.

[0004] In response to the above problems, the main components of the invention, such as the screw and connecting rod, are installed on the top of the lower rail. However, the length of the lower rail is fixed. In actual use, the length of some gaps may be smaller than the length of the lower rail. At this time, the lower rail cannot be spliced ​​together. Filling the remaining gaps and sealing them with other things may be time-consuming.

[0005] To this end, the present invention provides a guardrail with variable length and height to solve the above problems. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a guardrail with variable length and height to solve the above problems.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a guardrail with variable length and height, comprising a central mounting plate, a width adjustment assembly is arranged on one side of the central mounting plate, and a height adjustment assembly is arranged on the outside of the width adjustment assembly; the width adjustment assembly comprises a left gear and a right gear, the left gear and the right gear are both rotatably connected to one side of the central mounting plate, the left gear and the right gear are meshed, one side of the left gear and the right gear are both fixedly connected to a second connecting rod, the width adjustment assembly also comprises a left base and a right base, the tops of the left base and the right base are both fixedly connected to a side support plate, one side of the side support plate is rotatably connected to a first connecting rod, one end of the first connecting rod is rotatably connected to an auxiliary support plate, one end of the second connecting rod is rotatably connected to the auxiliary support plate, and the first connecting rod and the second connecting rod are coaxially rotated on one side of the auxiliary support plate.

[0008] Furthermore, a side lifting groove is fixedly connected to one side of the side support plate, an inner wall of the side lifting groove is slidably connected to a limiting rod, and a first limiting groove and a second limiting groove are provided on the outer side of the limiting rod.

[0009] By adopting the above technical solution, the overall height of the guardrail can be controlled.

[0010] Furthermore, one side of the central mounting plate and the auxiliary support plate is fixedly connected with a lifting slide groove, and the internal thread of the lifting slide groove is connected with a trapezoidal lead screw.

[0011] By adopting the above technical solution, the height of the guardrail is increased.

[0012] Furthermore, the outer side of the trapezoidal lead screw is threadedly connected to a nut block, and the outer side of the nut block is fixedly connected to a blocking plate.

[0013] By adopting the above technical solution, the space on both sides of the trapezoidal screw rod is blocked.

[0014] Furthermore, the height adjustment assembly includes a first fixing block, and the first fixing block is fixedly connected to one side of the side lifting slot.

[0015] The above technical solution is used to install the rotating shaft.

[0016] Furthermore, a rotating shaft is rotatably connected between the first fixed blocks, an operating rod is fixedly connected to the outer side of the rotating shaft, and one end of the operating rod is rotatably connected to a limiting block.

[0017] By adopting the above technical solution, an upward force is applied to the limit block by using the operating rod.

[0018] Furthermore, a second fixed block is fixedly connected to one side of the side lifting groove, an anti-falling block is rotatably connected between the second fixed blocks, and the anti-falling block has a built-in torsion spring.

[0019] By adopting the above technical solution, the limit rod is limited to prevent falling.

[0020] Furthermore, an auxiliary support block is fixedly connected to one side of the second fixing block, and the auxiliary support block is below the anti-falling block.

[0021] By adopting the above technical solution, the anti-fall block is reinforced and supported.

[0022] Beneficial Effects

[0023] The present invention provides a protective fence with variable length and height. Compared with the prior art, it has the following beneficial effects:

[0024] 1. The guardrail of this length and height, through the cooperation of the first connecting rod and the second connecting rod, allows the side support plate and the auxiliary support plate to move left and right, which can not only play a blocking role but also play a role in adjusting the width. The width can be freely controlled to adapt to different gap sizes.

[0025] 2. The guardrail of this length and height can be controlled in height through the combination of trapezoidal screw rod, nut block and blocking plate, which increases the practicality. After the limit rods on both sides are extended, wire mesh can be installed between the two sides based on this to enhance the barrier protection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0027] Figure 1 It is a three-dimensional diagram of the external structure of the present invention;

[0028] Figure 2 It is a three-dimensional structural diagram of the back side of the present invention;

[0029] Figure 3 It is an enlarged view of the structure at A of the present invention;

[0030] Figure 4 It is a left side view of the structure of the present invention;

[0031] Figure 5 It is an enlarged view of the structure at B of the present invention;

[0032] Figure 6 This is a result diagram of the width change of the left base and the right base moving closer to the middle of the present invention.

[0033] In the figure: 1. center mounting plate; 2. width adjustment assembly; 21. left base; 22. right base; 23. side support plate; 24. first connecting rod; 25. second connecting rod; 26. right gear; 27. left gear; 28. auxiliary support plate; 29. ​​lifting slide; 210. limit rod; 211. trapezoidal screw rod; 212. nut block; 213. blocking plate; 214. side lifting slot; 3. height adjustment assembly; 31. first fixed block; 32. rotating shaft; 33. operating rod; 34. limit block; 35. first limit slot; 36. second limit slot; 37. second fixed block; 38. anti-fall block; 39. auxiliary support block. DETAILED DESCRIPTION

[0034] It should be noted that in the description of the embodiments of the present application, the terms "front, rear", "left, right", "up, down", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present application. The terms "install", "connect", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0035] The present application is further described in detail below through drawings and examples.

[0036] Reference Figures 1 to 6 The embodiment of the present application provides a guardrail with variable length and height, including a central mounting plate 1, a width adjustment component 2 is arranged on one side of the central mounting plate 1, and a height adjustment component 3 is arranged on the outer side of the width adjustment component 2; the width adjustment component 2 includes a left gear 27 and a right gear 26, the left gear 27 and the right gear 26 are both rotatably connected to one side of the central mounting plate 1, the left gear 27 and the right gear 26 are meshed, and one side of the left gear 27 and the right gear 26 are both fixedly connected with a second connecting rod 25, the width adjustment component 2 also includes a left base 21 and a right base 22, the tops of the left base 21 and the right base 22 are both fixedly connected with a side support plate 23, one side of the side support plate 23 is rotatably connected with a first connecting rod 24, one end of the first connecting rod 24 is rotatably connected with an auxiliary support plate 28, one end of the second connecting rod 25 is rotatably connected to the auxiliary support plate 28, and the first connecting rod 24 and the second connecting rod 25 are coaxially rotated on one side of the auxiliary support plate 28.

[0037] A side lifting groove 214 is fixedly connected to one side of the side support plate 23 , and the inner wall of the side lifting groove 214 is slidably connected to the limiting rod 210 . The outer side of the limiting rod 210 is provided with a first limiting groove 35 and a second limiting groove 36 .

[0038] A lifting slot 29 is fixedly connected to one side of the central mounting plate 1 and the auxiliary support plate 28 , and a trapezoidal lead screw 211 is threadedly connected to the inner side of the lifting slot 29 .

[0039] The outer side of the trapezoidal lead screw 211 is threadedly connected to a nut block 212 , and the outer side of the nut block 212 is fixedly connected to a blocking plate 213 .

[0040] During specific implementation: when the left base 21 or the right base 22 is moved closer to each other, the left gear 27 and the right gear 26 will rotate, and the first connecting rod 24 and the second connecting rod 25 will rotate to a certain angle and pull the auxiliary support plate 28 to lift up at the same time near the central mounting plate 1, so that while adjusting the width of the device, the height is increased by a certain height by rising the auxiliary support plate 28, and the first connecting rod 24 and the second connecting rod 25 will also play an obstructive role to prevent unrelated personnel from passing through. When the trapezoidal screw rod 211 is twisted, the trapezoidal screw rod 211 will also rise and extend to increase the height of the device, and the nut block 212 and the blocking plate 213 can cooperate to block the space on both sides of the trapezoidal screw rod 211 to prevent unrelated personnel from climbing, and the nut block 212 and the blocking plate 213 can be set to connect in multiple groups so that there is no upper and lower gap, and people who want to climb over have no leverage to turn the nut block 212.

[0041] Reference Figure 1 and Figure 6 In one aspect of this embodiment, the height adjustment assembly 3 includes a first fixing block 31 , and the first fixing block 31 is fixedly connected to one side of the side lifting groove 214 .

[0042] A rotating shaft 32 is rotatably connected between the first fixed blocks 31 , an operating rod 33 is fixedly connected to the outer side of the rotating shaft 32 , and one end of the operating rod 33 is rotatably connected to a limiting block 34 .

[0043] A second fixing block 37 is fixedly connected to one side of the side lifting groove 214 , and an anti-falling block 38 is rotatably connected between the second fixing blocks 37 , and the anti-falling block 38 has a built-in torsion spring.

[0044] An auxiliary support block 39 is fixedly connected to one side of the second fixing block 37 , and the auxiliary support block 39 is below the anti-falling block 38 .

[0045] During specific implementation: the operating rod 33 utilizes the lever principle to apply an upward force to the limit block 34 to press against the inner wall of the first limit groove 35 to lift the limit rod 210 upward. At the same time, the upward lifting of the limit rod 210 will also push the anti-fall block 38 to rotate outward, but because the built-in torsion spring quickly resets it to press against the inner wall of the second limit groove 36, the limit rod 210 can be fixed. At this time, the limit rod 210 cannot move downward and can only move downward by manually pushing the anti-fall blocks 38 on both sides outward. After the limit rod 210 is extended, a wire mesh can be installed between the two sides based on this to enhance the barrier protection effect.

[0046] Working principle: when the left base 21 or the right base 22 is moved closer to each other, the left gear 27 and the right gear 26 will rotate, and the first connecting rod 24 and the second connecting rod 25 will rotate to a certain angle and pull the auxiliary support plate 28 to lift up at the same time near the central mounting plate 1, so that while adjusting the width of the device, the height is increased by a certain height by the rise of the auxiliary support plate 28. The first connecting rod 24 and the second connecting rod 25 will also play a blocking role to prevent unauthorized personnel from passing through. When the trapezoidal lead screw 211 is twisted, the trapezoidal lead screw 211 will also rise and extend to increase the height of the device, and the nut block 212 and the blocking plate 213 can cooperate with each other to block the space on both sides of the trapezoidal lead screw 211 to prevent unauthorized personnel from climbing up, and The nut block 212 and the blocking plate 213 can be provided with multiple groups of docking, so that there is no upper and lower gap, and the person who wants to climb has no leverage point to turn the nut block 212, and uses the lever principle to apply an upward force to the limit block 34 through the operating rod 33 to press against the inner wall of the first limit groove 35 to lift the limit rod 210 upward. At the same time, the upward lifting of the limit rod 210 will also push the anti-fall block 38 to rotate outward, but because the built-in torsion spring quickly resets it to press against the inner wall of the second limit groove 36 to fix the limit rod 210, at this time, the limit rod 210 cannot move downward and can only move downward by manually pushing the anti-fall blocks 38 on both sides outward. After the limit rod 210 is extended, a wire mesh can be installed between the two sides based on this to enhance the barrier protection effect.

[0047] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0048] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A guardrail with variable length and height, comprising a central mounting plate (1), characterized in that: A width adjustment component (2) is arranged on one side of the central mounting plate (1), and a height adjustment component (3) is arranged on the outer side of the width adjustment component (2); the width adjustment component (2) comprises a left gear (27) and a right gear (26), and the left gear (27) and the right gear (26) are both rotatably connected to one side of the central mounting plate (1), the left gear (27) and the right gear (26) are meshed, and one side of the left gear (27) and the right gear (26) are both fixedly connected to a second connecting rod (25), and the width adjustment component (2) also includes a left base (21) and a right base (22), the tops of the left base (21) and the right base (22) are fixedly connected to a side support plate (23), one side of the side support plate (23) is rotatably connected to a first connecting rod (24), one end of the first connecting rod (24) is rotatably connected to an auxiliary support plate (28), one end of the second connecting rod (25) is rotatably connected to the auxiliary support plate (28), and the first connecting rod (24) and the second connecting rod (25) are coaxially rotatable on one side of the auxiliary support plate (28).

2. A guardrail with variable length and height according to claim 1, characterized in that: A side lifting groove (214) is fixedly connected to one side of the side support plate (23); the inner wall of the side lifting groove (214) is slidably connected to a limit rod (210); and a first limit groove (35) and a second limit groove (36) are formed on the outer side of the limit rod (210).

3. A protective fence with variable length and height according to claim 1, characterized in that: The central mounting plate (1) and one side of the auxiliary support plate (28) are both fixedly connected with a lifting slide groove (29), and the lifting slide groove (29) is internally threadedly connected with a trapezoidal screw rod (211).

4. A protective fence with variable length and height according to claim 3, characterized in that: The outer side of the trapezoidal lead screw (211) is threadedly connected to a nut block (212), and the outer side of the nut block (212) is fixedly connected to a blocking plate (213).

5. A protective fence with variable length and height according to claim 2, characterized in that: The height adjustment assembly (3) comprises a first fixing block (31), wherein the first fixing block (31) is fixedly connected to one side of the side lifting slot (214).

6. A protective fence with variable length and height according to claim 5, characterized in that: A rotating shaft (32) is rotatably connected between the first fixed blocks (31), an operating rod (33) is fixedly connected to the outer side of the rotating shaft (32), and one end of the operating rod (33) is rotatably connected to a limiting block (34).

7. A protective fence with variable length and height according to claim 5, characterized in that: A second fixed block (37) is fixedly connected to one side of the side lifting groove (214), and an anti-falling block (38) is rotatably connected between the second fixed blocks (37), and the anti-falling block (38) has a built-in torsion spring.

8. A protective fence with variable length and height according to claim 7, characterized in that: An auxiliary support block (39) is fixedly connected to one side of the second fixing block (37), and the auxiliary support block (39) is below the anti-falling block (38).

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