Road maintenance guardrail

Abstract

The utility model discloses a road maintenance guardrail, which relates to the technical field of road guardrails and comprises a first box body and an extension component, a vertical rotating shaft is rotatably mounted in the first box body, a first gear is fixedly sleeved on the rotating shaft, and the extension component comprises a front frame and a rear frame which are respectively positioned on the front side and the rear side of the rotating shaft. The front frame and the rear frame transversely penetrate through the first box body in a sliding manner, and first racks in meshed connection with the first gear are mounted on the opposite surfaces of the front frame and the rear frame; a transverse positioning cylinder is arranged at the outer end of the rear frame, a bolt is inserted into the positioning cylinder, an insertion rod which is matched with the positioning cylinder and is coaxially arranged with the positioning cylinder is arranged at the outer end of the front frame, and a through hole matched with the bolt is formed in the insertion rod; the front frame and the rear frame of the guardrail can be unfolded towards the two sides at the same time, and the distance between every two adjacent guardrails can be flexibly adjusted according to needs; the front frame and the rear frame of the guardrail can be flexibly unfolded and folded, the two supporting assemblies can stretch out and draw back synchronously, and rapid disassembly, assembly and transportation are facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to road guardrail technical field, concretely relates to a road maintenance guardrail. BACKGROUND

[0002] At present, the guardrail needs to be used in the maintenance construction process of road, the interval of traditional guardrail is generally fixed when using, cannot flexibly adjust the interval of guardrail stand according to needs, and the guardrail is generally the overall structure, is inconvenient to disassemble and assemble. In addition, the stability of traditional guardrail is poor, and is prone to falling.

[0003] Therefore, it is urgent to develop a kind of guardrail for road maintenance to optimize and solve the above problems. CONTENT OF UTILITY MODEL

[0004] The utility model discloses a kind of road maintenance guardrails to solve the problems existing in prior art.

[0005] The technical scheme of the utility model is: a kind of road maintenance guardrail, including first box and extension assembly, vertical rotating shaft is rotatably installed in the first box, first gear is fixedly sleeved on the rotating shaft, the extension assembly includes front frame and rear frame respectively located rotating shaft front and back two sides, the front frame and rear frame are all transversely slid through first box, the opposite surface of two are all installed with the first rack meshing connection with first gear;

[0006] The outer end of the rear frame is provided with a transverse positioning cylinder, a bolt is inserted on the positioning cylinder, and the outer end of the front frame is provided with a plug rod which is coaxially arranged with the positioning cylinder. The plug rod is provided with a through hole matched with the bolt.

[0007] Preferably, the rotating shaft penetrates the top plate of the first box, and a hand wheel is installed on the upper end of the rotating shaft.

[0008] Preferably, two first gears are fixedly sleeved on the rotating shaft, and correspondingly, the opposite surface of the front frame and the rear frame is installed with two first racks located on the upper and lower sides.

[0009] Preferably, the bottom of the first box is fixedly connected with a second box, two groups of left-right symmetrically arranged telescopic support assemblies are arranged in the second box, the support assembly includes a rotating rod, a front support plate and a rear support plate, the rotating rod is vertically rotatably installed in the second box, and a second gear is sleeved on the rotating rod; the front support plate and the rear support plate are located on the left and right sides of the rotating rod, and both are longitudinally slidably installed on the inner wall of the second box, and the opposite surface of both is installed with a second rack meshing connection with the second gear.

[0010] The length of the front support plate and the rear support plate is not greater than the width of the second box, and the outer end of both is provided with a vertical fixing hole.

[0011] Preferably, the two front support plates are connected by a pull rod.

[0012] Compared with the prior art, the utility model has the following advantages:

[0013] The front frame and the rear frame of the guardrail can be expanded to both sides at the same time, and the distance between the two adjacent guardrails can be flexibly adjusted according to the requirement; the front frame and the rear frame of the guardrail can be flexibly expanded and closed, and the two groups of supporting components can be synchronously telescoped, so that the guardrail can be quickly disassembled and transported; after the supporting components are expanded, the distance between the front end and the rear end is increased, and the stability of the guardrail itself can be effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a three-dimensional structure schematic view of the utility model;

[0015] Figure 2 It is a sectional view of the first box body;

[0016] Figure 3 It is a schematic view of the internal structure of the second box body;

[0017] Figure 4 It is Figure 3 a plan view.

[0018] In the drawing: 1, first box body, 2, rotating shaft, 3, hand wheel, 4, first gear, 5, front frame, 6, rear frame, 7, first rack, 8, positioning cylinder, 9, bolt, 10, plug rod, 1001, through hole, 11, second box body, 12, rotating rod, 13, front support plate, 14, rear support plate, 15, second gear, 16, second rack, 17, fixing hole, 18, pull rod. DETAILED DESCRIPTION

[0019] The utility model is further described below in combination with the drawings and embodiments. Embodiment one

[0020] Referring to Figures 1-2 Fig. 1, a road maintenance guardrail comprises a first box body 1 and an expansion assembly, a vertical rotating shaft 2 is rotatably installed in the first box body 1, a first gear 4 is fixedly sleeved on the rotating shaft 2, the expansion assembly comprises a front frame 5 and a rear frame 6 located on the front and rear sides of the rotating shaft 2 respectively, the front frame 5 and the rear frame 6 are both transversely slidably penetrated through the first box body 1, and the opposite surfaces of the two are both provided with a first rack 7 connected with the first gear 4 in meshing.

[0021] More specifically, two first gears 4 are fixedly sleeved on the rotating shaft 2, and correspondingly, the opposite surfaces of the front frame 5 and the rear frame 6 are both provided with two first racks 7 located on the upper and lower sides respectively.

[0022] The outer end of the rear frame 6 is provided with a transverse positioning cylinder 8, a plug pin 9 is inserted on the positioning cylinder 8, and the outer end of the front frame 5 is provided with a plug rod 10 which is coaxially arranged with the positioning cylinder 8 and is provided with a through hole 1001 which is matched with the plug pin 9.

[0023] During road maintenance, a plurality of the guardrails are moved to one side of the maintenance area, initially, the front frame 5 and the rear frame 6 overlap front and back; during installation, the front frame 5 or the rear frame 6 is manually pulled to expand the guardrail, under the cooperation of the first gear 4 and the corresponding two first racks 7, the front frame 5 and the rear frame 6 are simultaneously expanded to both sides; after the guardrail is expanded, the plug rod 10 is inserted into the positioning cylinder 8 of the adjacent guardrail, and the plug pin 9 is used to insert the two together, thereby completing the connection of the adjacent guardrails.

[0024] The front frame 5 and the rear frame 6 of the guardrail can be simultaneously expanded to both sides, and the spacing between two adjacent guardrails can be flexibly adjusted as required; the front frame 5 and the rear frame 6 of the guardrail can be flexibly expanded and closed, and the guardrail is convenient for rapid disassembly, transportation and assembly. Embodiment two

[0025] As a preferred embodiment of the utility model, the embodiment adds a hand wheel 3 on the basis of the embodiment one, and specifically,

[0026] The rotating shaft 2 of the embodiment penetrates the top plate of the first box body 1, and the upper end of the rotating shaft 2 is provided with the hand wheel 3.

[0027] During installation, in addition to manually pulling the front frame 5 or the rear frame 6 to expand the guardrail, the hand wheel 3 can also be used to drive the rotating shaft 2 to rotate, thereby expanding the guardrail. Embodiment three

[0028] As a preferred embodiment of the utility model, the embodiment adds a support mechanism on the basis of the embodiment two, and specifically,

[0029] Referring to Figures 3-4 In the embodiment, the first box body 1 is fixedly connected with a second box body 11 at the bottom, the second box body 11 is provided with two groups of left-right symmetrically arranged telescopic support assemblies, the support assembly comprises a rotating rod 12, a front support plate 13 and a rear support plate 14, the rotating rod 12 is vertically rotatably installed in the second box body 11, and the rotating rod 12 is provided with a second gear 15; the front support plate 13 and the rear support plate 14 are respectively located on the left and right sides of the rotating rod 12, and both are longitudinally slidably installed on the inner wall of the second box body 11, and both are provided with a second rack 16 which is meshingly connected with the second gear 15 on the opposite surface.

[0030] The length of the front support plate 13 and the rear support plate 14 is not greater than the width of the second box body 11, and the outer end of the front support plate 13 and the rear support plate 14 is provided with a vertical fixing hole 17.

[0031] More specifically, the two front support plates 13 are connected by a pull rod 18 between their front ends.

[0032] Initially, both sets of support assemblies are located in the second box 11, facilitating transportation of the guardrail; after connecting with the adjacent guardrail, the pull rod 18 is pulled outwards to pull the two front support plates 13 forward, and under the cooperation of the second gear 15 and the corresponding two second racks 16, the two rear support plates 14 are also extended backwards; after the two sets of support assemblies are unfolded, the front support plates 13 and the rear support plates 14 are connected with the road surface by means of fixed bolts passing through the fixed holes 17, thereby completing the fixation of the guardrail.

[0033] After the support assemblies are unfolded, the distance between their front and rear ends increases, which can effectively improve the stability of the guardrail itself.

[0034] The utility model is not limited to the above-mentioned implementation manners, and various changes can be made within the knowledge range possessed by those skilled in the art without departing from the purpose of the utility model, and the changed content still belongs to the protection range of the utility model.

Claims

1. A road maintenance guardrail, comprising a first housing and an extension assembly, characterized in that: A vertical rotating shaft is rotatably installed inside the first housing. A first gear is fixedly sleeved on the rotating shaft. The extension assembly includes a front frame and a rear frame located on the front and rear sides of the rotating shaft, respectively. Both the front frame and the rear frame slide laterally through the first housing. A first rack that meshes with the first gear is installed on their opposite surfaces. The outer end of the rear frame is provided with a transverse positioning cylinder, and a pin is inserted into the positioning cylinder. The outer end of the front frame is provided with a rod that is adapted to the positioning cylinder and coaxially arranged, and a through hole adapted to the pin is opened on the rod.

2. The road maintenance guardrail according to claim 1, characterized in that: The rotating shaft passes through the top plate of the first housing, and a handwheel is installed at its upper end.

3. A road maintenance guardrail according to claim 1, characterized in that: Two first gears are fixedly sleeved on the rotating shaft, and correspondingly, two first racks located on the upper and lower sides are installed on the opposite surfaces of the front frame and the rear frame.

4. A road maintenance guardrail according to claim 1, characterized in that: The bottom of the first housing is fixedly connected to a second housing. The second housing is provided with two sets of telescopic support assemblies arranged symmetrically on the left and right. The support assembly includes a rotating rod, a front support plate and a rear support plate. The rotating rod is vertically rotatably installed in the second housing, and a second gear is sleeved on the rotating rod. The front support plate and the rear support plate are located on the left and right sides of the rotating rod, respectively. Both are longitudinally slidably installed on the inner wall of the second housing, and a second rack that meshes with the second gear is installed on their opposite surfaces. The lengths of the front support plate and the rear support plate are not greater than the width of the second box, and both of them have vertical fixing holes at their outer ends.

5. A road maintenance guardrail according to claim 4, characterized in that: The two front support plates are connected at their front ends by a tie rod.

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