Blocking fence for road construction

Abstract

The utility model relates to a blocking fence for road construction, which belongs to the technical field of road construction and comprises a bottom plate, a main fence is fixed on the upper surface of the bottom plate, a first extending mechanism used for transversely extending a blocking range is arranged on the main fence, and a second extending mechanism used for longitudinally extending the blocking range is arranged on the main fence. The first extending mechanism comprises a first rotating handle, and the first rotating handle is rotationally connected with the upper surface of the main fence through a bearing. According to the blocking fence for road construction, through cooperation of a first rotating handle, a gear can be driven to rotate so as to drive a rack to move, through movement of the rack, a connecting plate can be driven to move so as to drive extending fences on the two sides to move, and the blocking range of a main fence is transversely extended; the first connecting rod and the second connecting rod can be driven to move, so that the mounting plate is driven to move, the telescopic rod is extended, and preparation is made for longitudinally extending the blocking range.

Description

Technical Field

[0001] The utility model relates to the technical field of road construction, in particular to a blocking fence for road construction. Background Art

[0002] Construction building fence is made of iron pipe, which is made by bending, welding, grinding and high-pressure coating of seamless iron pipe. It is usually used for road reconstruction and road engineering isolation, and can also be used for facility protection in factories, warehouses, parking lots, commercial areas and public places.

[0003] For example, a road construction barrier fence is disclosed in China Utility Model Patent Publication No. (CN219793765U), which includes a fixed base and a barrier unit fixedly connected to the top of the fixed base, a connecting unit and an installation unit. The connecting unit is arranged on the side of the barrier unit, and the connecting unit includes a first connecting plate movably connected to the side wall of the barrier unit, a fixing plate fixedly connected to the first connecting plate on the side opposite to the barrier unit, a second connecting plate movably connected to the side opposite to the first connecting plate, and a fixing seat fixedly connected to the second connecting plate on the side opposite to the barrier unit; the installation unit is arranged on the connecting unit. Inside, a movable through hole is opened in the side wall of the fixed plate, and the installation unit includes a movable column that is movable through and arranged in the movable through hole, an outer pull seat fixedly connected to the end of the movable column located on the outside of the fixed plate, a snap seat fixedly connected to the end of the movable column located on the inside of the fixed plate, and a spring sleeved on the side surface of the movable column. This utility model solves the problem that the guardrails cannot be bent, placed and connected on a winding road, and the applicability of the blocking fence for road construction is low. However, the size of the fence in this patent is fixed, and the length of the barrier cannot be adjusted according to the range of the road construction site. Multiple fences need to be placed side by side, and the subsequent recycling work is also cumbersome, which affects practicality. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a blocking fence for road construction, which has the advantage of conveniently adjusting the range of the fence blocking according to the size of the construction site. It solves the problem that the size of the fence in the patent is fixed, the length of the blocking cannot be adjusted according to the range of the road construction site, multiple fences need to be placed side by side, and the subsequent recycling work is also cumbersome, affecting practicality.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a blocking fence for road construction, comprising a bottom plate, a main fence is fixed to the upper surface of the bottom plate, a first extension mechanism for extending the blocking range laterally is provided on the main fence, and a second extension mechanism for extending the blocking range longitudinally is provided on the main fence;

[0006] The first extension mechanism includes a first turning handle, which is rotatably connected to the upper surface of the main fence through a bearing, and the other end of the first turning handle penetrates and extends to the interior of the main fence and is fixed with a gear, a rack is meshed on the outer side of the gear, a connecting plate is fixed on the front side of the rack, the left side of the connecting plate penetrates and extends to the left side of the main fence, and an extension fence is fixed on the lower surface, and a connecting component is provided on the extension fence.

[0007] Furthermore, four universal wheels are fixed to the lower surface of the base plate and are evenly distributed at the four corners of the lower surface of the base plate.

[0008] Furthermore, there are two racks, which are symmetrically distributed around the central axis of the gear. Two guide rods are fixed between the left and right inner walls of the main fence, and the outer sides of the two guide rods are slidably connected to the inner sides of the two racks respectively.

[0009] Furthermore, the connecting assembly includes a first connecting rod, one end of which is fixed to the back side of the left extension fence, and a second connecting rod is fixed to the back side of the right extension fence. Two mounting plates are respectively provided on the back sides of the two extension fences, and a first sliding rod is fixed between the inner top wall and the inner bottom wall of the two mounting plates. The other ends of the first connecting rod and the second connecting rod respectively penetrate and extend to the interior of the two mounting plates, and are respectively slidably connected to the outer sides of the two first sliding rods, and a telescopic rod is fixed between the opposite sides of the two mounting plates.

[0010] Furthermore, the number of the telescopic rods is not less than two, and they are equidistantly distributed between opposite sides of the two mounting plates.

[0011] Furthermore, the second extension mechanism includes a fixing plate, which is fixed to the back of the main fence, and the upper surface of the fixing plate is rotatably connected to a second handle through a bearing, the other end of the second handle penetrates and extends to the interior of the fixing plate and is fixed with a threaded rod, the outer side of the threaded rod is threadedly connected to a threaded block, the back side of the threaded block penetrates and extends to the rear side of the fixing plate and is fixed with a support plate, second sliding rods are fixed to the left and right inner walls of the support plate, and two sliders are slidably connected to the outer side of the second sliding rod, the upper surfaces of the two sliders penetrate and extend to the upper side of the support plate, and are respectively fixed to the lower surfaces of the two mounting plates.

[0012] Furthermore, a first sliding opening is formed on the upper surface of the support plate, the two sliding blocks are both located inside the first sliding opening, and the width of the first sliding opening is adapted to the width of the sliding blocks.

[0013] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0014] 1. The blocking fence for road construction can drive the gear to rotate through the cooperation of the first turning handle, thereby driving the rack to move. The movement of the rack can drive the connecting plate to move, thereby driving the extension fences on both sides to move, so that the main fence can be extended laterally to extend the blocking range. The movement of the extension fence can drive the first connecting rod and the second connecting rod to move, thereby driving the installation plate to move, so that the telescopic rod is extended, in preparation for the longitudinal extension of the blocking range.

[0015] 2. The blocking fence for road construction can drive the threaded rod to rotate through the cooperation of the second turning handle, thereby driving the threaded block to move. The movement of the threaded block can drive the support plate to move, thereby driving the mounting plate to move, so as to drive the telescopic rod to move and extend the longitudinal blocking range of the main fence. Through the cooperation of the first sliding rod and the second sliding rod, the mounting plate can be unobstructed when moving horizontally and vertically, thereby facilitating extension. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the first extension mechanism of the utility model;

[0018] Figure 3 It is a top view of the first extension mechanism of the utility model;

[0019] Figure 4 This is a schematic diagram of the second extension mechanism of the utility model;

[0020] Figure 5 It is a side view of the second extension mechanism of the utility model.

[0021] In the figure: 1 bottom plate, 2 main fence, 3 first extension mechanism, 301 first handle, 302 gear, 303 rack, 304 connecting plate, 305 extension fence, 306 first connecting rod, 307 second connecting rod, 308 mounting plate, 309 first slide bar, 310 telescopic rod, 4 second extension mechanism, 401 fixing plate, 402 second handle, 403 threaded rod, 404 threaded block, 405 support plate, 406 second slide bar, 407 slider, 5 universal wheel. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1 In this embodiment, a blocking fence for road construction includes a base plate 1, a main fence 2 is fixed to the upper surface of the base plate 1, and a first extension mechanism 3 for extending the blocking range laterally is provided on the main fence 2, so that the fence can completely cover and block the road construction site to prevent irrelevant personnel from entering. A second extension mechanism 4 for extending the blocking range longitudinally is provided on the main fence 2, which is convenient for adjusting the longitudinal blocking range of the fence to prevent the fence from being climbed over.

[0024] Among them, four universal wheels 5 are fixed to the lower surface of the base plate 1 and are evenly distributed at the four corners of the lower surface of the base plate 1. The universal wheels 5 can be used to conveniently move the fence and enable the fence to be quickly moved to the road construction site.

[0025] See also Figure 2-3 In order to enable the fence to completely cover and block the road construction site to prevent unauthorized personnel from entering, the first extension mechanism 3 in this embodiment includes a first turning handle 301, and the first turning handle 301 is rotatably connected to the upper surface of the main fence 2 through a bearing. The other end of the first turning handle 301 penetrates and extends to the interior of the main fence 2, and is fixed with a gear 302. The first turning handle 301 drives the gear 302 to rotate, and a rack 303 is meshed on the outer side of the gear 302. The gear 302 drives the rack 303 to move. A connecting plate 304 is fixed on the front of the rack 303, and the rack 303 drives the connecting plate 304 to move. The left side of the connecting plate 304 penetrates and extends to the left side of the main fence 2, and an extension fence 305 is fixed on the lower surface. The connecting plate 304 drives the extension fence 305 to move, thereby extending the lateral blocking range of the fence to cover the range of the road construction site. A connecting component is provided on the extension fence 305.

[0026] In this example, there are two racks 303, which are symmetrically distributed around the central axis of the gear 302, so that the extended fences 305 on both sides move synchronously, which is convenient for expanding the blocking range. Two guide rods are fixed between the left and right inner walls of the main fence 2, and the outer sides of the two guide rods are respectively slidably connected to the inner sides of the two racks 303 to limit the moving range and angle of the racks 303.

[0027] It should be noted that the connecting assembly includes a first connecting rod 306, one end of which is fixed to the back of the left extension fence 305, and a second connecting rod 307 is fixed to the back of the right extension fence 305. The movement of the two extension fences 305 drives the first connecting rod 306 and the second connecting rod 307 to move respectively. Two mounting plates 308 are respectively provided on the back of the two extension fences 305. A first sliding rod 309 is fixed between the inner top wall and the inner bottom wall of the two mounting plates 308. The other ends of the first connecting rod 306 and the second connecting rod 307 respectively penetrate and extend to the inside of the two mounting plates 308, and are respectively slidably connected to the outer sides of the two first sliding rods 309. A second sliding opening is provided on the back of the two mounting plates 308, and the first connecting rod 306 and the second connecting rod 307 are respectively located inside the two second sliding openings, and the width of the second sliding opening is adapted to the outer diameter of the first connecting rod 306 and the outer diameter of the second connecting rod 307. A telescopic rod 310 is fixed between the opposite sides of the two mounting plates 308. The movement of the first connecting rod 306 and the second connecting rod 307 respectively drives the mounting plates 308 on both sides to move, so that the telescopic rod 310 is stretched according to the extension of the lateral blocking range. The number of the telescopic rods 310 is not less than two, and they are equidistantly distributed between the opposite sides of the two mounting plates 308, thereby reducing the gap in the fence and preventing the fence from being climbed over.

[0028] See also Figure 4-5In order to facilitate the adjustment of the longitudinal blocking range of the fence and prevent the fence from being climbed over, the second extension mechanism 4 in this embodiment includes a fixed plate 401, which is fixed to the back of the main fence 2. The upper surface of the fixed plate 401 is rotatably connected to a second handle 402 through a bearing. The other end of the second handle 402 penetrates and extends to the interior of the fixed plate 401 and is fixed with a threaded rod 403. The second handle 402 drives the threaded rod 403 to rotate. The outer side of the threaded rod 403 is threadedly connected to a threaded block 404. The threaded rod 403 drives the threaded block 404 to move. The back of the threaded block 404 penetrates and extends to the rear side of the fixed plate 401 and is fixed with a support plate 405. The threaded block 404 drives the support plate 405 to move. Second sliding rods 406 are fixed to the inner walls on the left and right sides of the support plate 405. The second sliding rod 406 is fixed to the inner walls on the left and right sides of the support plate 405. 6 is slidably connected to the outer side of two sliders 407, the upper surfaces of the two sliders 407 penetrate and extend to the upper side of the support plate 405, and are respectively fixed to the lower surfaces of the two mounting plates 308, the support plate 405 drives the second slide bar 406 and the slider 407 to move, thereby driving the mounting plate 308 to move, and the telescopic rod 310 is driven to move, thereby extending the longitudinal blocking range of the fence, when the telescopic rod 310 is stretched, the mounting plate 308 moves to drive the slider 407 to move, and the slider 407 slides on the second slide bar 406, thereby facilitating the free stretching of the telescopic rod 310, the mounting plate 308 moves to drive the first slide bar 309 to move, and the two first slide bars 309 can slide on the inner sides of the first connecting rod 306 and the second connecting rod 307 respectively, thereby facilitating the position of the telescopic rod 310 to be moved up and down.

[0029] In this example, a first sliding opening is provided on the upper surface of the support plate 405, and two sliders 407 are both located inside the first sliding opening, and the width of the first sliding opening is adapted to the width of the sliders 407, so that the sliders 407 can move on the support plate 405, thereby driving the mounting plate 308 to move, allowing the telescopic rod 310 to extend and retract under the drive of the extension fence 305.

[0030] The working principle of the above embodiment is:

[0031] (1) The universal wheel 5 can be used to conveniently move the fence so that the fence can be quickly moved to the road construction site. After moving to the site, the universal wheel 5 is locked and the first handle 301 is turned. The first handle 301 drives the gear 302 to rotate, the gear 302 drives the rack 303 to move, the rack 303 drives the connecting plate 304 to move, and the connecting plate 304 drives the extended fence 305 to move, so that the lateral blocking range of the fence is extended to cover the range of the road construction site. The movement of the two extended fences 305 respectively drives the movement of the first connecting rod 306 and the second connecting rod 307. The movement of the first connecting rod 306 and the second connecting rod 307 respectively drives the movement of the mounting plates 308 on both sides, so that the telescopic rod 310 is stretched according to the extension of the lateral blocking range.

[0032] (2) When the telescopic rod 310 is stretched, the mounting plate 308 moves to drive the slider 407 to move, and the slider 407 slides on the second slider 406, thereby facilitating the free stretching of the telescopic rod 310. When the longitudinal range of the fence needs to be extended, the second handle 402 is rotated, and the second handle 402 drives the threaded rod 403 to rotate, and the threaded rod 403 drives the threaded block 404 to move, and the threaded block 404 drives the support plate 405 to move, and the support plate 405 drives the second slider 406 and the slider 407 to move, thereby driving the mounting plate 308 to move, and the telescopic rod 310 is driven to move, thereby extending the longitudinal blocking range of the fence, and the movement of the mounting plate 308 drives the first slider 309 to move, and the two first sliders 309 can slide on the inner sides of the first connecting rod 306 and the second connecting rod 307 respectively, thereby facilitating the upward and downward movement of the telescopic rod 310.

[0033] 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. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0034] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention.

Claims

1. A barrier fence for road construction, comprising a bottom plate (1), characterized in that: A main fence (2) is fixed on the upper surface of the bottom plate (1), and a first extension mechanism (3) for extending the blocking range laterally is provided on the main fence (2), and a second extension mechanism (4) for extending the blocking range longitudinally is provided on the main fence (2); The first extension mechanism (3) includes a first turning handle (301), which is rotatably connected to the upper surface of the main fence (2) via a bearing, and the other end of the first turning handle (301) penetrates and extends to the inside of the main fence (2), and is fixed with a gear (302), the outer side of the gear (302) is meshed with a rack (303), and the front side of the rack (303) is fixed with a connecting plate (304), the left side of the connecting plate (304) penetrates and extends to the left side of the main fence (2), and an extension fence (305) is fixed to the lower surface, and a connecting component is provided on the extension fence (305).

2. A road construction barrier fence according to claim 1, characterized in that: Four universal wheels (5) are fixed to the lower surface of the base plate (1) and are evenly distributed at the four corners of the lower surface of the base plate (1).

3. The barrier fence for road construction according to claim 1, characterized in that: There are two racks (303) and they are symmetrically distributed around the central axis of the gear (302). Two guide rods are fixed between the left and right inner walls of the main fence (2), and the outer sides of the two guide rods are slidably connected to the inner sides of the two racks (303) respectively.

4. A road construction barrier fence according to claim 3, characterized in that: The connecting assembly includes a first connecting rod (306), one end of which is fixed to the back of the left extension fence (305), and a second connecting rod (307) is fixed to the back of the right extension fence (305). Two mounting plates (308) are respectively provided on the backs of the two extension fences (305), and a first sliding rod (309) is fixed between the inner top wall and the inner bottom wall of the two mounting plates (308). The other ends of the first connecting rod (306) and the second connecting rod (307) respectively penetrate and extend to the inside of the two mounting plates (308), and are respectively slidably connected to the outer sides of the two first sliding rods (309), and a telescopic rod (310) is fixed between the opposite sides of the two mounting plates (308).

5. The road construction barrier fence according to claim 4, characterized in that: The number of the telescopic rods (310) is no less than two, and they are evenly distributed between opposite sides of the two mounting plates (308).

6. The barrier fence for road construction according to claim 5, characterized in that: The second extension mechanism (4) includes a fixing plate (401), the fixing plate (401) is fixed to the back of the main fence (2), the upper surface of the fixing plate (401) is rotatably connected to a second handle (402) through a bearing, the other end of the second handle (402) penetrates and extends to the interior of the fixing plate (401), and is fixed with a threaded rod (403), the outer side of the threaded rod (403) is threadedly connected to a threaded block (404), the back side of the threaded block (404) penetrates and extends to the rear side of the fixing plate (401), and is fixed with a support plate (405), the left and right inner walls of the support plate (405) are fixed with a second sliding rod (406), the outer side of the second sliding rod (406) is slidably connected to two sliders (407), the upper surfaces of the two sliders (407) penetrate and extend to the upper side of the support plate (405), and are respectively fixed to the lower surfaces of the two mounting plates (308).

7. The barrier fence for road construction according to claim 6, characterized in that: A first sliding opening is provided on the upper surface of the support plate (405), and the two sliding blocks (407) are both located inside the first sliding opening, and the width of the first sliding opening is adapted to the width of the sliding blocks (407).

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