Combined type safety protective fence suitable for urban road

Abstract

The utility model relates to a combined type safety protective fence suitable for urban roads, and belongs to the technical field of protective fences, the combined type safety protective fence comprises a protective assembly and a connecting assembly, the connecting assembly comprises a linkage rod, a plurality of sliding rods, a plurality of connecting hooks and a plurality of connecting rods, the linkage rod slides in the vertical direction, and the sliding rods are fixedly connected with the linkage rod; the connecting hooks are provided with sliding holes allowing the sliding rods to slide, the linkage rod drives the connecting hooks to rotate synchronously, the connecting rods penetrate through the connecting grooves and are fixedly connected with the opposite groove walls of the connecting grooves, and the connecting hooks abut against the outer walls of the connecting rods. When two adjacent protective fences are combined and connected, the connecting hook on one protective fence is aligned with the connecting rod of the other protective fence, the linkage rod is driven to drive the sliding rod to move synchronously, then the multiple connecting hooks are driven to rotate synchronously to abut against the connecting rod in a hanging mode, connecting combination of the two adjacent protective fences is achieved, the connecting mode is simple and convenient, and the connecting efficiency is improved. And the installation operation efficiency is greatly improved.

Description

Technical Field

[0001] The present application relates to the technical field of guardrails, and in particular to a combined safety guardrail suitable for use on urban roads. Background Art

[0002] Safety guardrails are mainly used to protect personal safety and equipment and facilities in places such as roads. They can effectively reduce the damage to equipment and facilities caused by accidental collisions when vehicles are shuttling back and forth, and can prevent pedestrians from crossing the road.

[0003] In the related art, the safety guardrail includes a base, a horizontal bracket 1 is arranged near the middle position of the base, a vertical bracket 1 is arranged on the left side of the horizontal bracket 1, a vertical bracket 2 is arranged on the right side of the horizontal bracket 1, a mounting groove is provided on one side of the vertical bracket 2, a mounting plate is provided on one side of the vertical bracket 1, a plurality of groups of screw grooves are provided through the front of the vertical bracket 1, and a plurality of groups of screw rods are provided through the side wall of the vertical bracket 2 at equal intervals. When two adjacent safety guardrails are connected to each other, after the mounting plate is inserted into the mounting groove, the connection between the guardrails is realized by the screw rods cooperating with the screw grooves.

[0004] With respect to the above-mentioned related technologies, the inventors found that there are the following defects: guardrails for municipal roads usually require multiple connections to be made, and workers are required to rotate multiple screws when connecting each two adjacent guardrails, which is cumbersome to operate and has low connection and installation efficiency. Utility Model Content

[0005] In order to improve the problem that multiple guardrails are connected to each other, workers are required to rotate multiple screws when connecting each two adjacent guardrails, which is troublesome to operate and has low connection and installation efficiency. The present application provides a combined safety guardrail suitable for urban roads.

[0006] The present application provides a combined safety guardrail for urban roads using the following technical solutions:

[0007] A combined safety guardrail suitable for urban roads includes a base, a first cross frame, a second cross frame, a first vertical frame and a second vertical frame, wherein the first cross frame is arranged on the base and its length direction is consistent with the length direction of the base, the first vertical frame and the second vertical frame are respectively arranged at opposite ends of the first cross frame, and the second cross frame is connected to the first vertical frame and the second vertical frame at one end away from the first cross frame, and also includes a protection component and a connection component, wherein the protection component is arranged in a protection area formed by the first cross frame, the second cross frame, the first vertical frame and the second vertical frame, and the connection component includes a connection block, a linkage rod, a plurality of sliding rods, and a plurality of A dry connecting hook and several connecting rods, the connecting block is arranged on the first vertical frame and its length direction is consistent with the first vertical frame, the second vertical frame is provided with a connecting groove for the connecting block to be inserted along its own length direction, the linkage rod is arranged in the connecting block and slides along the length direction of the connecting block, several of the sliding rods are fixedly connected to the linkage rod and their length direction is perpendicular to the length direction of the linkage rod, several of the connecting hooks are provided with sliding holes for the sliding rods to slide, the linkage rod drives several connecting hooks to rotate synchronously, several of the connecting rods pass through the connecting groove and are fixedly connected to the relative groove wall of the connecting groove, and the connecting hooks are against the outer wall of the connecting rod.

[0008] By adopting the above technical solution, when two adjacent guardrails are combined and connected, the connecting block on the first vertical frame of one of the guardrails is aligned with the connecting groove on the second vertical frame of the other guardrail and extended into. During the extension process, the driving linkage rod drives the sliding rod to move synchronously, and then drives multiple connecting hooks to rotate synchronously until they are against the outer wall of the connecting rod, thereby realizing the hanging of the connecting hook and the connecting rod, and then realizing the connection combination of the two adjacent guardrails. The connection method is simple and convenient, which greatly improves the installation operation efficiency.

[0009] Preferably, a sliding cavity and a giving way groove are provided on the connecting block, the giving way groove is connected to the sliding cavity, the sliding cavity is for the linkage rod to be placed and moved, an abutment block is provided on the inner wall of the sliding cavity, the connecting hook abuts on the abutment block, a follower block is fixedly connected to the connecting hook, the follower block is located in the giving way groove, a return spring is provided on the follower block, and one end of the return spring away from the follower block is fixedly connected to the groove wall of the giving way groove.

[0010] By adopting the above technical solution, when the guardrail is not connected, the linkage rod moves downward. Since the connecting hook abuts against the abutment block, the linkage rod drives the connecting hook to rotate relatively, and the connecting hook drives the follower block to move synchronously. The follower block pulls the reset spring, so that the reset spring is in a stretched state; when the connecting hook is driven to be hooked with the connecting rod, the linkage rod is driven to move upward, and the connecting hook and the follower block are reset under the pulling action of the elastic force of the reset spring itself, so that the connecting hook is hooked on the connecting rod.

[0011] Preferably, a driving rod is provided at one end of the linkage rod, the length direction of the driving rod is consistent with the length direction of the sliding rod, and a driving hole for the driving rod to extend out is opened on the connecting block, the driving hole is a waist-shaped long hole, and the driving rod moves along the driving hole.

[0012] By adopting the above technical solution, the driving rod moves along the driving hole, driving the linkage rod to move, thereby driving a plurality of connecting hooks to rotate synchronously, reducing the steps of tightening the connecting hooks one by one and improving the operating efficiency.

[0013] Preferably, it also includes a limit assembly, which includes a limit sleeve rod, a limit spring and a limit plug rod, the limit sleeve rod and the limit spring are coaxially sleeved on the driving rod, one end of the limit spring is fixedly connected to the linkage rod, and the other end is fixedly connected to the limit sleeve rod, the limit plug rod is fixedly connected to the limit sleeve rod, and a first limit hole for inserting the limit plug rod is opened on the connecting block and located on one side of the driving hole.

[0014] By adopting the above technical solution, after the connecting hook is hooked against the connecting rod and the connecting block is inserted into the connecting groove, in order to maintain the position stability of the connecting hook, the linkage rod and the driving rod, the end of the limit rod is inserted into the first limit hole to reduce the possibility of displacement of the driving rod. At this time, the limit sleeve presses the limit spring to put the limit spring in a compressed state; when the guardrail needs to be disassembled, the operator applies a pulling force to the limit sleeve and the limit rod away from the connecting block. At this time, the elastic force of the limit spring cooperates with the pulling force, which is conducive to the smooth removal of the limit rod from the first limit hole, thereby improving the convenience of operation.

[0015] Preferably, the connection block is further provided with a second limiting hole, and the second limiting hole is also for the limiting rod to be inserted.

[0016] By adopting the above technical solution, when the connecting block is not connected to the connecting groove, the driving rod drives the linkage rod to move upward. Under the abutment of the abutment block, the connecting hook rotates relative to the linkage rod, so that the reset spring is in a stretched state. At this time, the limiting rod is inserted into the second limiting hole to limit the driving rod, thereby improving the state stability of the linkage rod and the connecting rod in this state.

[0017] Preferably, a stop portion is provided at the end of the limiting rod, and a stop protrusion is provided on the hole wall of the first limiting hole and the second limiting hole, and the stop portion and the stop protrusion are both made of elastic material. When the limiting rod is extended into the first limiting hole or the second limiting hole, the stop portion is against the stop protrusion.

[0018] By adopting the above technical solution, when the limit rod is inserted into the first limit hole or the second limit hole, the operator applies force to the limit rod to make the stop part enter the first limit hole or the second limit hole and resist against the stop protrusion. The abutment force between the stop protrusion and the stop part can be used to balance the elastic force of the limit spring, reduce the possibility of the limit rod escaping from the first limit hole or the second limit hole, and further improve the position stability of the driving rod, the linkage rod and the connecting hook.

[0019] Preferably, the protection assembly includes a protection cross bar and a plurality of S-shaped protection bars, wherein the protection cross bar is connected to the first cross frame and its length direction is consistent with the length direction of the first cross frame, the plurality of S-shaped protection bars are evenly arranged along the length direction of the protection cross bar, and the opposite ends of the S-shaped protection bars are fixedly connected to the protection cross bar.

[0020] By adopting the above technical solution, if a vehicle collides with a guardrail, a number of S-shaped guardrails and guardrail cross bars cooperate to quickly decompose the collision force when the vehicle collides with the guardrail, which can buffer and guide the vehicle, quickly guide the colliding vehicle, and reduce the deformation of the guardrail itself and the damage caused to the vehicle.

[0021] Preferably, it further comprises a fixing assembly, wherein the fixing assembly comprises a fixing rod, and the protective cross bar, the first cross frame and the second cross frame are all provided with fixing holes for the fixing rod to be inserted into.

[0022] By adopting the above technical solution, the protective cross bar located at the lower end of the S-shaped protective bar is connected to the first cross frame through the fixing rod, and the protective cross bar located at the upper end of the S-shaped protective bar is connected to the second cross frame through the fixing rod. The connection method is simple, which is convenient for timely replacement of the fixed components after they are damaged.

[0023] Preferably, the fixing assembly further comprises a blocking block, and the opposite ends of the fixing rod are fixedly connected with a blocking block, the diameter of the blocking block is larger than the diameter of the fixing socket, and the blocking block is made of rubber material.

[0024] By adopting the above technical solution, the diameter of the blocking block is larger than the diameter of the fixed socket. When the protective cross bar is connected to the first cross frame, the fixed rod is not easily separated from the protective cross bar or the first cross frame, so that the protective cross bar and the first cross frame can always remain connected, and the blocking block is pressed into the fixed socket under the action of its own elastic force; when disassembling, a pulling force is directly applied to the blocking block to separate it from the hole wall of the fixed socket, which facilitates disassembly and assembly, and can further improve operating efficiency.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. Through the setting of the connection assembly, when two adjacent guardrails are combined and connected, the connection block on the first vertical frame of one of the guardrails is aligned with the connection groove on the second vertical frame of the other guardrail and inserted. During the insertion process, the operator drives the linkage rod to drive the sliding rod to move synchronously, and then drives multiple connecting hooks to rotate synchronously until they are against the outer wall of the connecting rod, so as to achieve the connection between the connecting hook and the connecting rod, and then realize the connection combination of the two adjacent guardrails. The connection method is simple and convenient, which greatly improves the installation operation efficiency;

[0027] 2. Through the setting of the limit sleeve rod and the limit plug rod, after the connecting hook is hooked with the connecting rod and the connecting block is inserted into the connecting groove, in order to maintain the position stability of the connecting hook, the linkage rod and the driving rod, the limit plug rod is inserted into the first limit hole or the second limit hole to reduce the possibility of displacement of the driving rod. At this time, the limit sleeve rod presses the limit spring to make the limit spring in a compressed state; when the guardrail needs to be disassembled, the operator applies a pulling force to the limit sleeve rod and the limit plug rod away from the connecting block. At this time, the elastic force of the limit spring cooperates with the pulling force, which is conducive to the limit plug rod to smoothly disengage from the first limit hole or the second limit hole, thereby improving the convenience of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of a combined safety guardrail for urban roads in an embodiment of the present application.

[0029] Figure 2 It is a structural schematic diagram used to reflect the connection status of adjacent guardrails in an embodiment of the present application.

[0030] Figure 3 yes Figure 2 A partial enlarged view of part A in the middle.

[0031] Figure 4 It is a structural schematic diagram used to reflect the connection relationship between the limit assembly and the linkage rod in the embodiment of the present application.

[0032] Figure 5 yes Figure 2 A partial enlarged view of part B in the middle.

[0033] Description of reference numerals: 1, base; 11, first horizontal frame; 12, second horizontal frame; 13, first vertical frame; 14, second vertical frame; 141, connecting groove; 2, protection assembly; 21, protection cross bar; 211, fixing socket; 22, S-shaped protection bar; 3, connecting assembly; 31, connecting block; 311, driving hole; 312, first limiting hole; 3121, stop protrusion; 313, sliding cavity; 3131, limiting frame; 3132, stop Connecting block; 314, second limiting hole; 32, linkage rod; 321, sliding rod; 33, connecting hook; 331, hook portion; 332, sliding portion; 3321, sliding hole; 3322, follower block; 3323, reset spring; 34, connecting rod; 35, driving rod; 4, fixing assembly; 41, fixing rod; 42, blocking block; 5, limiting assembly; 51, limiting sleeve rod; 52, limiting spring; 53, limiting plug rod; 531, stop portion. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-5 This application is described in further detail.

[0035] The present application embodiment discloses a combined safety guardrail suitable for use on urban roads, such as Figure 1 As shown, it includes a base 1, a first horizontal frame 11, a second horizontal frame 12, a first vertical frame 13 and a second vertical frame 14. The first horizontal frame 11 is fixedly connected to the base 1 and its length direction is consistent with the length direction of the base 1. The first vertical frame 13 and the second vertical frame 14 are respectively fixedly connected to the opposite ends of the first horizontal frame 11. The second horizontal frame 12 is connected to the first vertical frame 13 and the second vertical frame 14 at one end away from the first horizontal frame 11. It also includes a protection component 2 and a connection component 3. The protection component 2 is arranged in the protection area formed by the first horizontal frame 11, the second horizontal frame 12, the first vertical frame 13 and the second vertical frame 14. The connection component 3 is used to combine and connect two adjacent guardrails.

[0036] like Figure 1 and 2 As shown, the protection assembly 2 includes a protection cross bar 21 and a plurality of S-shaped protection bars 22. The protection cross bar 21 is connected to the first cross frame 11 and its length direction is consistent with the length direction of the first cross frame 11. The plurality of S-shaped protection bars 22 are evenly arranged along the length direction of the protection cross bar 21, and the opposite ends of the S-shaped protection bars 22 are fixedly connected to the protection cross bar 21.

[0037] like Figure 2 and 3As shown, it also includes a fixing assembly 4, which includes a fixing rod 41 and a blocking block 42. The first cross frame 11, the second cross frame 12 and the protective cross bar 21 are all hollow. The protective cross bar 21, the first cross frame 11 and the second cross frame 12 are all provided with a fixing socket 211 for the fixing rod 41 to be inserted. The fixing socket 211 on the second cross frame 12 and the protective cross bar 21 located below are both through holes. The fixing socket 211 on the first cross frame 11 and the protective cross bar 21 located above are both connected to their respective hollow cavities. The opposite ends of the fixing rod 41 are fixedly connected with blocking blocks 42, which are made of rubber material, and the diameter of the blocking block 42 is slightly larger than the diameter of the fixing socket 211. When the protective component 2 is connected to the first cross frame 11, the blocking block 42 and the fixing rod 41 are aligned with the fixing holes 211 on the protective cross bar 21 and the first cross frame 11, and pressure is applied to the blocking block 42, so that the blocking block 42 is inserted into the hollow cavity of the first cross frame 11 through the fixing hole 211, and the fixing rod 41 is penetrated through the protective cross bar 21 and the first cross frame 11; when the protective component 2 is connected to the second cross frame 12, the blocking block 42 and the fixing rod 41 are aligned with the fixing holes 211 on the second cross frame 12 and the protective cross bar 21, and pressure is applied to the blocking block 42, so that the blocking block 42 is inserted into the hollow cavity of the protective cross bar 21 through the fixing hole 211, and the fixing rod 41 is penetrated through the protective cross bar 21 and the second cross frame 12. This connection method allows the protective cross bar 21, the first cross frame 11 and the second cross frame 12 to always maintain a connection relationship, and a movable gap can be left between the protective component 2 and the first cross frame 11 and the second cross frame 12, leaving room for slight shaking of the guardrail, so as to buffer the vehicle when the vehicle collides with the guardrail.

[0038] like Figure 2 , 4 As shown in Figure 5, the connection assembly 3 includes a connection block 31, a linkage rod 32, a driving rod 35, a plurality of slide rods 321, a plurality of connection hooks 33 and a plurality of connection rods 34. The connection block 31 is fixedly connected to the first vertical frame 13, and its length direction is consistent with that of the first vertical frame 13. A connection groove 141 is provided on the second vertical frame 14 along its length direction for the connection block 31 to extend into. A sliding cavity 313 is provided on the connection block 31, and the linkage rod 32 is placed in the sliding cavity 313 and moves along the length direction of the connection block 31. A limit frame 3131 is fixedly connected to the inner wall of the sliding cavity 313, and the linkage rod 32 is located in the limit frame 3131. The limit frame 3131 limits and guides the lifting and lowering movement of the linkage rod 32. A plurality of slide rods 321 are fixedly connected to the linkage rod 32, and the length direction of the slide rod 321 is perpendicular to the length direction of the linkage rod 32.

[0039] like Figure 4 and 5As shown, the connecting hook 33 includes a sliding portion 332 and a hook portion 331, the sliding portion 332 and the hook portion 331 are fixedly connected, the inner wall of the sliding cavity 313 is fixedly connected with an abutting block 3132, and the sliding portion 332 abuts against the abutting block 3132. The sliding portion 332 is provided with a sliding hole 3321 for the sliding rod 321 to move. A yielding groove 3133 is also provided in the connecting block 31, the sliding portion 332 is fixedly connected with a follower block 3322, the follower block 3322 is located in the yielding groove 3133, the follower block 3322 is fixedly connected with a return spring 3323, and one end of the return spring 3323 away from the follower block 3322 is fixedly connected to the groove wall of the yielding groove 3133.

[0040] like Figure 4 and 5 As shown, a driving hole 311 is also provided on the connecting block 31, and the driving hole 311 is a waist-shaped long hole. The driving rod 35 is fixedly connected to the end of the linkage rod 32, and the length direction of the driving rod 35 is perpendicular to the length direction of the linkage rod 32. The driving rod 35 passes through the driving hole 311 and moves along the driving hole 311. A plurality of connecting rods 34 pass through the connecting groove 141 and are fixedly connected to the opposite groove wall of the connecting groove 141. The connecting rods 34 are hooked by the connecting hooks 33. In this embodiment, the number and position of the sliding rod 321, the connecting hook 33 and the connecting rod 34 correspond to each other.

[0041] like Figure 4 and 5 As shown, it also includes a limit assembly 5, which includes a limit sleeve rod 51, a limit spring 52 and a limit plug rod 53. The limit sleeve rod 51 and the limit spring 52 are coaxially sleeved on the driving rod 35. One end of the limit spring 52 is fixedly connected to the linkage rod 32, and the other end is fixedly connected to the end of the limit sleeve rod 51. The limit plug rod 53 is fixedly connected to the limit sleeve rod 51. A first limit hole 312 and a second limit hole 314 for inserting the limit plug rod 53 are provided on the connecting block 31 and located on one side of the driving hole 311. A stop portion 531 is fixedly connected to the end of the limit plug rod 53. Stop protrusions 3121 are fixedly connected to the hole walls of the first limit hole 312 and the second limit hole 314. The stop portion 531 and the stop protrusion 3121 are both made of elastic material.

[0042] like Figure 4 As shown, when two adjacent guardrails are combined and connected, the connecting block 31 of one guardrail is aligned with the connecting groove 141 of the other guardrail and inserted. In the unconnected state, under the abutment of the abutment block 3132, the follower block 3322 generates a rotation tendency along with the sliding part 332, and the return spring 3323 is stretched, and the limit rod 53 extends into the second limit hole 314 to limit the movement of the linkage rod 32.

[0043] like Figure 2 and 5As shown, during the connection process, the operator pulls out the limit rod 53 from the second limit hole 314, moves the driving rod 35 upward, drives the linkage rod 32 to move upward synchronously, and pulls the connecting hook 33 to rotate and reset under the elastic pulling action of the reset spring 3323. When the connecting hook 33 rotates until the hook portion 331 abuts against the outer wall of the connecting rod 34, the connecting hook 33 and the connecting rod 34 are connected to each other, thereby realizing the connection between the connecting block 31 and the second vertical frame 14. In order to make the connection between the connecting hook 33 and the connecting rod 34 tighter, an elastic rubber sleeve is fixedly provided on the hook portion 331, so that the elastic rubber sleeve abuts against the bottom of the connecting groove 141 and the outer wall of the connecting rod 34.

[0044] like Figure 2 , 4 As shown in Figure 5, after the connection between the connecting hook 33 and the connecting rod 34 is completed, the limit rod 53 and the stop portion 531 are simultaneously inserted into the first limit hole 312, and the stop protrusion 3121 is against the stop portion 531. At this time, the limit spring 52 is in a compressed state, reducing the possibility of the limit rod 53 escaping from the first limit hole 312; when the guardrail needs to be disassembled, the operator applies a pulling force to the limit rod 53. At this time, the limit spring 52 applies a thrust to the limit sleeve 51 under the action of its own elastic force. With the cooperation of the limit spring 52, the limit rod 53 is able to escape from the first limit hole 312 more smoothly.

[0045] The implementation principle of the combined safety guardrail for urban roads in the embodiment of the present application is as follows:

[0046] When the guardrails are combined and connected, the connecting block 31 is aligned with the connecting groove 141 on the adjacent guardrails, and the driving rod 35 moves along the driving hole 311, driving the linkage rod 32 to move along the length direction of the connecting block 31 in the sliding cavity 313, thereby realizing the synchronous rotation of multiple connecting hooks 33. When the curved hook portion 331 is rotated to the outer wall of the connecting rod 34 and is hooked and abutted, the connection between the connecting hook 33 and the connecting rod 34 is realized, thereby realizing the combined connection of the two adjacent guardrails. The connection operation is simple and convenient.

[0047] If a protective component 2 needs to be repaired or replaced, the operator will simultaneously pull out the blocking block 42 and the fixing rod 41 from the fixing socket 211 to separate the protective cross bar 21 from the first cross frame 11 and the second cross frame 12, and then replace it; place the protective component 2 in the protective area, and then press the fixing rod 41 and the blocking block 42 into the hollow cavity of the protective cross bar 21, the first cross frame 11 or the second cross frame 12 to achieve a fixed connection of the protective component 2.

[0048] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A combined safety guardrail for urban roads, comprising a base (1), a first horizontal frame (11), a second horizontal frame (12), a first vertical frame (13) and a second vertical frame (14), wherein the first horizontal frame (11) is arranged on the base (1) and its length direction is consistent with the length direction of the base (1), the first vertical frame (13) and the second vertical frame (14) are respectively arranged at opposite ends of the first horizontal frame (11), and the second horizontal frame (12) is connected to one end of the first vertical frame (13) and the second vertical frame (14) away from the first horizontal frame (11), characterized in that: The invention also comprises a protection component (2) and a connection component (3), wherein the protection component (2) is arranged in a protection area formed between a first horizontal frame (11), a second horizontal frame (12), a first vertical frame (13) and a second vertical frame (14), and the connection component (3) comprises a connection block (31), a linkage rod (32), a plurality of sliding rods (321), a plurality of connection hooks (33) and a plurality of connection rods (34), wherein the connection block (31) is arranged on the first vertical frame (13) and its length direction is consistent with that of the first vertical frame (13), and a connection groove (31) for inserting the connection block (31) is provided on the second vertical frame (14) along its length direction. 141), the linkage rod (32) is arranged in the connection block (31) and slides along the length direction of the connection block (31), a plurality of the sliding rods (321) are fixedly connected to the linkage rod (32) and the length direction is perpendicular to the length direction of the linkage rod (32), a plurality of the connecting hooks (33) are provided with sliding holes (3321) for the sliding rods (321) to slide, the linkage rod (32) drives the plurality of connecting hooks (33) to rotate synchronously, a plurality of the connecting rods (34) penetrate the connecting groove (141) and are fixedly connected to the opposite groove wall of the connecting groove (141), and the connecting hooks (33) are hung on the connecting rods (34).

2. The combined safety guardrail for urban roads according to claim 1 is characterized in that: The connecting block (31) is provided with a sliding cavity (313) and a giving way groove (3133), the giving way groove (3133) is communicated with the sliding cavity (313), the sliding cavity (313) is used for the linkage rod (32) to be placed and moved, the inner wall of the sliding cavity (313) is provided with an abutting block (3132), the connecting hook (33) abuts against the abutting block (3132), the connecting hook (33) is fixedly connected with a follower block (3322), the follower block (3322) is located in the giving way groove (3133), the follower block (3322) is provided with a return spring (3323), and one end of the return spring (3323) away from the follower block (3322) is fixedly connected to the groove wall of the giving way groove (3133).

3. The combined safety guardrail for urban roads according to claim 1 is characterized in that: A driving rod (35) is provided at one end of the linkage rod (32), the length direction of the driving rod (35) is consistent with the length direction of the sliding rod (321), and a driving hole (311) for the driving rod (35) to extend is opened on the connecting block (31), and the driving hole is a waist-shaped long hole, and the driving rod (35) moves along the driving hole (311).

4. The combined safety guardrail for urban roads according to claim 3 is characterized in that: The invention also comprises a limit assembly (5), wherein the limit assembly (5) comprises a limit sleeve rod (51), a limit spring (52) and a limit plug rod (53); the limit sleeve rod (51) and the limit spring (52) are both coaxially sleeved on the driving rod (35); one end of the limit spring (52) is fixedly connected to the linkage rod (32), and the other end is fixedly connected to the limit sleeve rod (51); the limit plug rod (53) is fixedly connected to the limit sleeve rod (51); and a first limit hole (312) for inserting the limit plug rod (53) is provided on the connecting block (31) and located on one side of the driving hole (311).

5. The combined safety guardrail for urban roads according to claim 4 is characterized in that: The connection block (31) is also provided with a second limiting hole (314), and the second limiting hole (314) is also for the limiting insertion rod (53) to be inserted.

6. The combined safety guardrail for urban roads according to claim 5 is characterized in that: A stopper portion (531) is provided at the end of the limiting rod (53), and a stopper protrusion (3121) is provided on the hole wall of the first limiting hole (312) and the second limiting hole (314). The stopper portion (531) and the stopper protrusion (3121) are both made of elastic material. When the limiting rod (53) extends into the first limiting hole (312) or the second limiting hole (314), the stopper portion (531) abuts against the stopper protrusion (3121).

7. The combined safety guardrail for urban roads according to claim 1 is characterized in that: The protection assembly (2) comprises a protection cross bar (21) and a plurality of S-shaped protection bars (22); the protection cross bar (21) is connected to the first cross frame (11) and its length direction is consistent with the length direction of the first cross frame (11); the plurality of S-shaped protection bars (22) are evenly arranged along the length direction of the protection cross bar (21); and opposite ends of the S-shaped protection bars (22) are fixedly connected to the protection cross bar (21).

8. The combined safety guardrail for urban roads according to claim 7 is characterized in that: It also comprises a fixing assembly (4), the fixing assembly (4) comprising a fixing rod (41), and the protective crossbar (21), the first cross frame (11) and the second cross frame (12) are all provided with a fixing insertion hole (211) for inserting the fixing rod (41).

9. The combined safety guardrail for urban roads according to claim 8 is characterized in that: The fixing assembly (4) further comprises a blocking block (42), and the blocking blocks (42) are fixedly connected to opposite ends of the fixing rod (41), the diameter of the blocking block (42) is greater than the diameter of the fixing plug hole (211), and the blocking block (42) is made of rubber material.

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