Combined highway guardrail

Abstract

The application discloses a combined highway guardrail, which comprises lifting bases, the lifting bases are pre-buried on both sides of the highway at intervals, posts are movably connected to the lifting bases, and guardrail assemblies are movably connected between the adjacent posts. The application has the advantages of simple implementation, low cost, reusability, etc. The lifting bases are first installed at positions on the highway where the guardrails are needed, and then the lifting bases, the posts and the guardrail assemblies are assembled or disassembled through the locking buckle connection mode. The connection is reliable and stable, the disassembly process does not need bolts or disassembly tools, the disassembly efficiency is high, time and labor are saved, the cost of manpower and financial resources is low, and the application has high practicability.

Description

TECHNICAL FIELD

[0001] The present application relates to a combined highway guardrail, belonging to the technical field of highway guardrails. BACKGROUND

[0002] Highway crash barrier is also called highway guardrail net, highway guardrail plate, highway guardrail, highway fence, highway net fence, etc. Highway guardrail net is the most common one in the guardrail net series products, which is made of domestic high-quality low-carbon steel wire and aluminum-magnesium alloy wire by weaving and welding, has the characteristics of flexible assembly and durability, and can be used as permanent guardrail net wall or temporary isolation net. In use, only different fixing methods of stand are needed to achieve the purpose. The existing highway guardrails are generally fixed by four screws of the base, but in actual use, due to road repair or unexpected situations, the guardrail needs to be moved or removed, and then installed again after the work is finished. At this time, the construction personnel need to use tools frequently to install and remove the screws, which greatly affects the construction efficiency. SUMMARY

[0003] Therefore, the purpose of the present application is to provide a combined highway guardrail which can overcome the shortcomings of the prior art.

[0004] The purpose of the present application is achieved by the following technical solutions:

[0005] A combined highway guardrail, comprising a lifting base, the lifting base is pre-buried at intervals on both sides of the highway; a stand is movably connected to the lifting base, and a guardrail assembly is movably connected between adjacent stands.

[0006] The aforementioned lifting base comprises a mounting plate anchored on the side of the highway, a mounting hole is formed in the mounting plate, and a pre-buried pipe is provided at the bottom of the mounting plate and opposite to the mounting hole. The pre-buried pipe is provided with a lifting movable rod, and the lifting movable rod is connected to the pre-buried pipe through a first pressing locking mechanism.

[0007] The aforementioned stand comprises a fixed pipe, a connecting pipe is provided at the bottom end of the fixed pipe, and a second pressing locking mechanism is provided in the connecting pipe, so that the connecting pipe is detachably connected to the outside of the lifting movable rod.

[0008] The aforementioned guardrail assembly is provided with a plug-in buckle structure at both ends, and a plug hole matched with the plug-in buckle structure is formed in the stand, so that the stand and the guardrail assembly are connected by plug-in buckling.

[0009] The first pressing locking mechanism comprises elastic limiting hooks arranged in the embedded pipe and always having an inwardly offset elastic deformation force, a first spring arranged at the bottom of the movable rod, a limiting groove S arranged at the upper section and cooperating with the elastic limiting hooks, and an unlocking ring arranged in the limiting groove S.

[0010] The elastic limiting hooks are at least four in number and arranged in a ring shape on the fixed ring, and the inner side of the ring is provided with barbs for limiting the movable rod in the limiting groove S.

[0011] The second pressing locking mechanism comprises a hook plate cooperating with the limiting groove S on the movable rod, the hook plate being connected to the inner wall of the connecting pipe through a fourth spring, the front end of the hook plate being in the form of a hook corresponding to the inclined surface of the movable ring, the rear end being provided with an inclined groove T, an elastic pushing member being fixedly connected to the inner wall of the connecting pipe at the inclined groove T, and a telescopic locking member cooperating with the elastic pushing member.

[0012] The elastic pushing member comprises a mounting pipe fixed to the inner wall of the connecting pipe opposite to the position of the hook plate, and an active pushing plate connected to the mounting pipe through a third spring; the telescopic locking member comprises a connecting ring capable of moving axially along the connecting pipe, a fastening rod being arranged at the bottom end of the connecting ring opposite to the position of the hook plate, the end of the fastening rod being in the form of an inclined head adapted to the inclined groove T, and a control mechanism being arranged at the top end of the connecting ring for controlling the axial movement of the connecting ring.

[0013] The control mechanism comprises a sleeve pipe sleeved on the connecting pipe, a connecting rod being arranged at the top end of the connecting ring, a vertical through slot being formed in the connecting pipe, the connecting rod extending out of the through slot and being fixedly connected to the sleeve pipe, a threaded pipe being sleeved on the connecting pipe below the sleeve pipe and being screwed to the connecting pipe, and the threaded pipe being in abutment with the sleeve pipe through a top rod.

[0014] Alternatively, the control mechanism comprises a receiving disc arranged at the top end of the connecting ring, the receiving disc being fixedly connected to the connecting ring through a support, a radial through hole L being formed in the fixed pipe for mounting a guardrail assembly, an axial fixing hole V being formed in the bottom end of the fixed pipe and being in communication with the radial through hole L, a trigger member being slidably connected in the axial fixing hole V, the top of the trigger member being in abutment with the guardrail assembly, and the bottom of the trigger member being in abutment with the receiving disc.

[0015] The aforementioned guardrail assembly comprises a guardrail body and a movable rod, a sliding groove N is arranged at both ends of the guardrail body, one end of the movable rod is arranged in the sliding groove N and is in sliding connection with the sliding groove N, the other end of the movable rod is provided with an annular groove K, an elastic movable ring is arranged in the annular groove K, a radial through hole L adapted to the elastic movable ring is arranged on the fixed tube, the movable rod is arranged in the radial through hole L of the fixed tube and is connected through the elastic movable ring.

[0016] Compared with the prior art, the combination type highway guardrail disclosed by the application comprises a lifting base, the lifting base is pre-buried at intervals on both sides of the highway, a stand is movably connected to the lifting base, and a guardrail assembly is movably connected between adjacent stands. When the guardrail needs to be installed, the lifting base is in an extended state, and the stand and the guardrail assembly can be assembled. When the guardrail needs to be removed, the stand, the stand and the guardrail assembly can be quickly removed. Not only can the construction be avoided, but also the tires of the vehicle can be damaged. Preferably, the lifting control of the lifting base adopts a first pressing locking mechanism, the lifting base and the stand adopt a second pressing locking mechanism, and the stand and the guardrail assembly adopt a snap connection. Not only is the connection reliable and stable, but also no additional tools are needed during disassembly, greatly improving the work efficiency of the construction personnel.

[0017] The beneficial effects of the application are:

[0018] The application has the advantages of simple implementation, low cost, reusability, installation of the lifting base at positions on the highway where the guardrail needs to be installed, assembly or disassembly of the lifting base, the stand and the guardrail assembly through the lock connection mode, high connection reliability, good stability, no need for bolts or disassembly tools during disassembly, high disassembly efficiency, time and labor saving, low investment in manpower and financial resources, and high practicality.

[0019] Other advantages, objects and features of the application will be explained in the following description, and will be apparent to those skilled in the art based on the following description, or can be taught from the practice of the application. The objects and other advantages of the application can be achieved and obtained by the following description. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to make the objects, technical solutions and advantages of the application clearer, the application will be further described in detail below with reference to the drawings, in which:

[0021] Figure 1 The figure is a structural schematic diagram of the application;

[0022] Figure 2 The figure is a three-dimensional structural schematic diagram of the first pressing locking mechanism 104.

[0023] Figure 3 is a schematic cross-sectional structural diagram of the first press-lock mechanism 104;

[0024] Figure 4 A schematic diagram of the enlarged structure of part A;

[0025] Figure 5 for Figure 1 Schematic diagram of the cross-sectional structure;

[0026] Figure 6 for Figure 5 The enlarged structural diagram of part B in the middle;

[0027] Figure 7 for Figure 5 The enlarged structural diagram of part C in the middle;

[0028] Figure 8 3D is a schematic diagram of the three-dimensional structure of the movable rod 302. DETAILED DESCRIPTION

[0029] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the preferred embodiments are only for illustrating the present invention, and are not intended to limit the scope of protection of the present invention.

[0030] like Figures 1-8 As shown, a combined highway guardrail includes a lifting base 100, which is pre-buried at multiple intervals on both sides of the highway; columns 200 are movably connected to the lifting base 100, and guardrail components 300 are movably connected between adjacent columns 200.

[0031] The liftable base 100 includes a mounting plate 101 anchored to the roadside. Mounting plate 101 has a mounting hole defined in it. A pre-buried pipe 102, pre-buried on the roadside and opposite the mounting hole, is located at the bottom of the mounting plate 101. A liftable movable rod 103 is located within the pre-buried pipe. The movable rod 103 is connected to the pre-buried pipe 102 via a first push-lock mechanism 104, eliminating the need for frequent assembly and disassembly. The movable rod 103 can slide up and down within the pre-buried pipe 102. When a guardrail is required, the rod is unlocked and extended upward. When not in use, the rod retracts into the pre-buried pipe 102 and is locked in place, preventing damage to tires in the event of a vehicle running over it.

[0032] The lift base 100 is connected to the column 200 via a second pressing and locking mechanism.

[0033] Buckle structures are provided at both ends of the guardrail assembly 300, and a socket matching the buckle structure is provided on the column 200, so that the column 200 and the guardrail assembly 300 are buckled and connected.

[0034] The bolt hole group is arranged on the mounting plate 101 of the lifting base 100, so that the lifting base 100 is fixed to the side of the road through anchor bolts. The interval between adjacent lifting bases 100 is set according to actual needs, and the interval is equal or unequal.

[0035] The first pressing locking mechanism 104 comprises elastic limiting hooks 104e arranged in the embedded pipe 102, and always has an inwardly offset elastic deformation force. A first spring 104b is arranged at the bottom of the movable rod 103, an upper section is provided with a limiting groove S cooperating with the elastic limiting hooks 104e, and an unlocking ring is arranged in the limiting groove.

[0036] A fixing disc 104a is fixedly connected to the bottom end of the movable rod 103, and a buffer rod 104c corresponding to the elastic limiting hooks 104e is arranged on the fixing disc 104a. The buffer rod 104c is arranged in at least four and annularly distributed on the fixing disc 104a.

[0037] A fixing ring 104d is arranged above the buffer rod 104c and is fixedly connected to the inner wall of the embedded pipe 102. When the first spring 104b applies an upward moving force to the movable rod 103, the fixing ring 104d is used to limit the extension of the movable rod 103 and the fixing disc 104a, so as to prevent excessive upward movement of the movable rod 103.

[0038] The limiting hooks 104e are arranged in at least four and annularly distributed on the fixing ring 104d, and the inner side of the limiting hooks 104e is provided with a barb. When the movable rod 103 is pressed downward, the barb on the limiting hooks 104e is hooked in the groove S, so as to limit the movable rod 103 and prevent accidental upward movement of the movable rod 103. The limiting hooks 104e are made of a material with good toughness.

[0039] The unlocking ring comprises a first blocking ring 104f fixedly arranged in the middle of the groove S, an active ring 104g sleeved and slidably connected in the groove S is arranged below the first blocking ring 104f, the outer circumference of the active ring 104g is an inclined downward slope, and the bottom outer diameter is the same as the diameter of the movable rod 103. A second spring 104h is arranged at the bottom of the active ring 104g, and the two ends of the second spring 104h are fixedly connected to the active ring 104g and the inner wall of the groove S respectively. When the movable rod 103 needs to be extended out of the embedded pipe 102, the movable rod 103 is pressed downward again, so that the barb on the limiting hooks 104e moves out of the groove S, and the barb on the limiting hooks 104e moves to the inclined surface of the active ring 104g due to the rebound of the limiting hooks 104e when the movable rod 103 moves downward. Then the movable rod 103 is pushed upward by the first spring 104b. At this time, the limiting hooks 104e pull the active ring 104g downward, and when the bottom of the active ring 104g contacts the inner bottom wall of the groove S, the movable rod 103 continues to move upward, the limiting hooks 104e are separated from the groove S, and the locking is released, so that the movable rod 103 can be extended out of the embedded pipe 102.

[0040] In addition, the first pressing locking mechanism 104 can also be a limiting ball structure, and limiting balls are arranged on the upper and lower ends of the movable rod 103, and limiting holes opposite to the limiting balls are arranged on the embedded pipe, and the limiting position of the limiting balls is adjusted to realize the lifting adjustment of the movable rod 103.

[0041] The column 200 comprises a fixed pipe 202, and a connecting pipe 201 is arranged at the bottom end of the fixed pipe 202, and the second pressing locking mechanism is arranged in the connecting pipe 201, so that the connecting pipe 201 is sleeved on the outer side of the movable rod 103 and detachably connected with the movable rod 103.

[0042] The second pressing locking mechanism comprises a hook plate 203 matched with the groove S on the movable rod 103, the hook plate 203 is connected with the inner wall of the connecting pipe 201 through a fourth spring 204d, the front end of the hook plate 203 is in a hook shape corresponding to the inclined surface of the movable ring 104g, so as to be conveniently clamped into or moved out of the groove S, the rear end is provided with an inclined groove T, the elastic pushing piece 204 is arranged at the inclined groove T and fixedly connected with the inner wall of the connecting pipe 201, and the telescopic locking piece 205 is matched with the elastic pushing piece 204. The hook plate 203 can be pushed into the groove S through the elastic pushing piece 204, and then locked through the telescopic locking piece 205, and when the telescopic locking piece 205 is unlocked, the connecting pipe 201 can be pulled out, and at this time, the hook plate 203 can be moved out of the groove S along the inclined surface of the movable ring 104g under the action of the fourth spring 204d.

[0043] The hook plate 203 is made of soft material and is arranged at least four and uniformly distributed on the inner wall of the connecting pipe 201.

[0044] The elastic pushing piece 204 comprises a mounting pipe 204a opposite to the hook plate 203 and fixed to the inner wall of the connecting pipe 201, and a movable push plate 204b is arranged in the mounting pipe, and the push plate 204b is arranged in the mounting pipe 204a through a third spring 204c. The position where the push plate 204b contacts the hook plate 203 is chamfered, the third spring 204c applies a pushing force to the push plate 204b, the hook plate 203 can be pushed into the groove S, and the fourth spring 204d applies a pulling force to the hook plate 203, and the hook plate 203 can be pulled out of the groove S by pulling out the connecting pipe 201 upward.

[0045] The telescopic locking piece 205 comprises a connecting ring 205a capable of moving axially along the connecting pipe 201, a fastening rod 205b opposite to the hook plate 203 is arranged at the bottom end of the connecting ring 205a, and the end of the fastening rod 205b is an inclined end head matched with the inclined groove T, and a control mechanism for controlling the axial movement of the connecting ring 205a is arranged at the top end of the connecting ring 205a.

[0046] The control mechanism comprises a sleeve 205f sleeved on the connecting pipe 201, a connecting rod 205e arranged at the top end of the connecting ring 205a, and a vertical through slot formed in the connecting pipe 201, the connecting rod 205e extending out of the through slot and fixedly connected with the sleeve 205f; a threaded pipe 205i is arranged below the sleeve 205f and screwed on the connecting pipe 201, and the threaded pipe 205i is abutted with the sleeve 205f through a jacking rod 205j. The threaded pipe 205i can move up and down along the connecting pipe 201 during rotation, and when it moves upward, the jacking rod 205j can push the sleeve 205f to move upward, so that the fastening rod 205b moves upward and is unlocked from the hook plate 203.

[0047] A second stop ring 205g is arranged above the sleeve 205f and fixedly connected with the connecting pipe 201, and the second stop ring 205g is connected with the sleeve 205f through a fifth spring 205h in a tension state, and in the initial state, the fifth spring 205h applies an upward moving force to the sleeve 205f, that is, the connecting ring 205a and the fastening rod 205b are located above the hook plate 203.

[0048] The control mechanism comprises a receiving disc 205d arranged at the top end of the connecting ring 205a, the receiving disc 205d being fixedly connected with the connecting ring 205a through a support 205c, a radial through hole L is formed in the fixed pipe 202 for mounting the guardrail assembly 300, an axial fixing hole V is formed in the bottom end of the fixed pipe 202 and communicates with the radial through hole L, a trigger 206 is slidably connected in the axial fixing hole V, and the bottom of the trigger 206 is connected with the receiving disc 205d, the trigger 206 comprises a trigger rod 206a, the top end of the trigger rod 206a is arc-shaped, a limiting slot H is formed in the bottom end of the trigger rod 206a, a connecting block 206c is slidably connected in the limiting slot H, and the connecting block 206c is connected with a pressing plate 206b through a sixth spring 206d. In the locking state, the top end of the trigger 206 is located in the radial through hole L, and when the movable rod 302 of the guardrail assembly 300 is inserted into the radial through hole L, the trigger rod 206a is pressed downward, and when the trigger rod 206a moves downward, the sixth spring 206d is pressed, the pressing plate 206b is pressed downward, the receiving disc 205d is pressed downward, so that the connecting ring 205a and the fastening rod 205b move downward and are locked; in the unlocking state, when the movable rod 302 of the guardrail assembly 300 is pulled out of the radial through hole L, the unlocking can be realized under the restoring force of the sixth spring 206d.

[0049] A limiting groove G is further provided in the upper middle section of the axial fixing hole V of the fixing tube 202. A limiting ring 206e is fixedly connected to the trigger rod 206a and can slide in the limiting groove G. A seventh spring 206f is provided at the bottom of the limiting ring 206e. When the trigger rod 206a moves upward under the action of the restoring force of the sixth spring 206d, the limiting ring 206e can limit the upward movement to prevent the limiting ring 206e from colliding with the radial through hole L of the fixing tube 202; and the seventh spring 206f applies an upward force to the trigger rod 206a, making it easier to reset the trigger rod 206a.

[0050] The guardrail assembly 300 includes a guardrail body 301 and a movable rod 302. Slide grooves N are provided at both ends of the guardrail body 301. One end of the movable rod 302 is arranged in the slide groove N and is slidably connected thereto. The other end is provided with an annular groove K. An elastic movable ring 303 is provided in the annular groove K. A radial through hole L adapted to the elastic movable ring 303 is opened on the fixed tube 202, so that the movable rod 302 is inserted into the radial through hole L of the fixed tube 202 and is plug-in connected through the elastic movable ring 303.

[0051] The elastic movable ring 303 includes a tapered ring with a small front end and a large rear end. One side of the tapered ring is fixed to the inner wall of the movable ring 303 by a return spring 304.

[0052] A limiting slider 305 is provided at the end of the movable rod 302 close to the sliding groove N to achieve sliding limitation of the movable rod 302 in the sliding groove N.

[0053] The guardrail body 301 is a guardrail commonly used on highways. During installation, the movable rod 302 is inserted into the radial through hole L of the fixed tube 202, and the elastic movable ring 303 is conical. During installation, due to the action of the conical inclined surface, it can be consistent with the diameter of the radial through hole L, so that it can smoothly enter the radial through hole L. After the movable rod 302 passes through the radial through hole L, the movable ring 303 will be offset under the push of the reset spring 304, realizing the snap limit, and the installation of the guardrail body 301 can be completed.

[0054] The specific operation method is:

[0055] When installing, the movable rod 103 is pressed down manually, so that the barb on the limiting hook 104e moves to the slope on the top of the movable ring 104g, and then the movable rod 103 is pushed up by the first spring 104b, at this time the limiting hook 104e will first pull the movable ring 104g down, when the bottom thereof contacts the inner bottom wall of the groove S, the movable rod 103 continues to move upward, the limiting hook 104e will be separated from the groove S, so that the movable rod 103 can be extended from the embedded pipe 102, then the fixed pipe 202 is installed at the top end of the movable rod 103, so that the inner wall of the connecting pipe 201 contacts the outer side of the embedded pipe 102, and then the guardrail body 301 is installed between two adjacent fixed pipes 202, so that the movable rod 302 is correspondingly inserted into the two radial through holes L, at this time the trigger rod 206a is pushed downward by the movable rod 302, when the trigger rod 206a moves downward, the pressing plate 206b and the connecting block 206c are pressed downward, so that the connecting ring 205a and the fastening rod 205b move downward, the fastening rod 205b passes through the through hole U and slides in the inclined groove T, so as to drive the push plate 204b to move to the position of the hook plate 203, the hook plate 203 is pushed inward by the push plate 204b until it is hooked in the groove S, and the installation is completed.

[0056] The device can be removed in two ways, the first way is to separate the fixed pipe 202 and the guardrail body 301 one by one:

[0057] First, the movable ring 303 is manually rotated to be flush with the movable rod 302, and then the movable rod 302 is taken out of the radial through hole L, at this time the trigger rod 206a is pushed upward by the seventh spring 206f to reset, so that the fastening rod 205b is separated from the inclined groove T, and the hook plate 203 is separated from the groove S, at this time the limiting is released, so that the connecting assembly 200 can be taken off from the movable rod 103, and at the same time the guardrail body 301 and the fixed pipe 202 are separated.

[0058] The second way is to take out the fixed pipe 202 and the guardrail body 301 together from the embedded assembly 100:

[0059] At this time, the threaded pipe 205i is manually rotated to move upward, so that the sleeve 205f is pushed upward by the threaded pipe 205i and the top rod 205j, and then the connecting ring 205a and the fastening rod 205b are moved upward by the sleeve 205f and the connecting rod 205e, until the fastening rod 205b is separated from the inclined groove T, and the hook plate 203 is separated from the groove S, at this time the limiting is released, so that the connecting assembly 200 can be taken off from the movable rod 103, and at the same time the guardrail body 301 and the fixed pipe 202 are not separated.

[0060] The construction personnel can select different disassembling modes according to actual construction conditions, and compared with the mode of disassembling by using screws in the prior art, the device can greatly improve the work efficiency of the construction personnel.

[0061] The above is only a preferred embodiment of the present application, and is not a limitation on the present application in any form. Any simple modification, equivalent change and modification of the above embodiment without departing from the technical solution content of the present application and according to the technical essence of the present application still belongs to the scope of the technical solution of the present application.

Claims

1. A modular highway guard rail, characterized by: The application relates to a lifting base (100) which is embedded on both sides of a road, a stand (200) movably connected to the lifting base (100), and a guardrail assembly (300) movably connected between adjacent stands (200). The lifting base (100) comprises an installation plate (101) anchored on the side of the road, a mounting hole is formed in the installation plate (101), the bottom of the installation plate (101) is provided with a pre-embedded pipe (102) embedded in the side of the road and opposite to the mounting hole, a lifting movable rod (103) is arranged in the pre-embedded pipe (102), and the lifting movable rod (103) is connected with the pre-embedded pipe (102) through a first pressing locking mechanism (104). The first pressing locking mechanism (104) comprises elastic limiting hooks (104e) arranged in the pre-embedded pipe (102) and always having an elastic deformation force offset inwardly, a first spring (104b) arranged at the bottom of the movable rod (103), an upper section provided with a limiting groove S matched with the elastic limiting hooks (104e), and an unlocking ring arranged in the limiting groove S. The unlocking ring comprises a first blocking ring (104f) fixed in the middle of the groove S, an active ring (104g) sleeved in the groove S and slidably connected with the groove S and arranged below the first blocking ring (104f), an outer circle of the active ring (104g) being an inclined downward slope, and the bottom outer diameter being the same as the diameter of the movable rod (103). A second spring (104h) is arranged at the bottom of the active ring (104g), and the two ends of the second spring (104h) are fixed with the active ring (104g) and the inner wall of the groove S respectively. The stand (200) comprises a fixed pipe (202) and a connecting pipe (201) arranged at the bottom end of the fixed pipe (202), and a second pressing locking mechanism is arranged in the connecting pipe (201), so that the connecting pipe (201) is sleeved on the outside of the lifting movable rod (103) and detachably connected with the lifting movable rod (103). The second pressing locking mechanism comprises a hook plate (203) matched with the groove S on the movable rod (103), the hook plate (203) is connected with the inner wall of the connecting pipe (201) through a fourth spring (204d), the front end of the hook plate (203) is in the form of a hook corresponding to the slope of the active ring (104g), the rear end is provided with an inclined groove T, an elastic pushing piece (204) fixedly connected with the inner wall of the connecting pipe (201) is arranged at the inclined groove T, and a telescopic locking piece (205) matched with the elastic pushing piece (204) is arranged at the inclined groove T. The elastic pushing piece (204) comprises an installation pipe (204a) fixedly connected with the inner wall of the connecting pipe (201) and opposite to the hook plate (203), and an active pushing plate (204b) connected with the installation pipe through a third spring (204c). The telescopic locking piece (205) comprises a connecting ring (205a) capable of moving axially along the connecting pipe (201), a fastening rod (205b) opposite to the hook plate (203) and arranged at the bottom end of the connecting ring (205a), and an inclined end head matched with the inclined groove T arranged at the end of the fastening rod (205b). The top end of the connecting ring (205a) is provided with a control mechanism for controlling the axial movement of the connecting ring (205a).

2. The modular highway guard rail of claim 1, wherein: The guardrail assembly (300) is provided with a plug-in structure at both ends, and a plug hole matched with the plug-in structure is formed on the stand column (200), so that the stand column (200) is plug-in connected with the guardrail assembly (300).

3. The modular highway guard rail of claim 1, wherein: The elastic limiting hooks (104e) are at least four in number and are annularly and uniformly distributed on the fixing ring (104d), and the inner side of the elastic limiting hooks (104e) is provided with a barb, and the barb is hooked in the groove S to limit the movable rod (103).

4. The modular highway guard rail of claim 1, wherein: The control mechanism comprises a sleeve pipe (205f) sleeved on the connecting pipe (201), a connecting rod (205e) is arranged at the top end of the connecting ring (205a), a vertical through slot is formed on the connecting pipe (201), the connecting rod (205e) extends out of the through slot and is fixedly connected with the sleeve pipe (205f); a threaded pipe (205i) is arranged below the sleeve pipe (205f) and is screwed on the connecting pipe (201), and the threaded pipe (205i) is abutted with the sleeve pipe (205f) through a jacking rod (205j); Alternatively, the control mechanism comprises a receiving disc (205d) arranged at the top end of the connecting ring (205a), the receiving disc (205d) is fixedly connected with the connecting ring (205a) through a support (205c), a radial through hole L for installing the guardrail assembly (300) is formed in the fixed pipe (202), an axial fixing hole V communicated with the radial through hole L is formed at the bottom end of the fixed pipe (202), a trigger piece (206) is slidably connected in the axial fixing hole V, and the top of the trigger piece (206) is abutted with the guardrail assembly (300), and the bottom of the trigger piece (206) is connected with the receiving disc (205d).

5. The modular highway guard rail of claim 1, wherein: The guardrail assembly (300) comprises a guardrail body (301) and a movable rod (302), a sliding groove N is arranged at both ends of the guardrail body (301), one end of the movable rod (302) is arranged in the sliding groove N and is slidably connected with the sliding groove N, the other end of the movable rod (302) is provided with an annular groove K, an elastic movable ring (303) is arranged in the annular groove K, and a radial through hole L matched with the elastic movable ring (303) is formed on the fixed pipe (202), so that the movable rod (302) is arranged in the radial through hole L of the fixed pipe (202) and is plug-in connected through the elastic movable ring (303).

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