A telescopic guardrail

Abstract

The present invention discloses a telescopic guardrail, which relates to the field of guardrail devices, including a fixed frame, a telescopic frame and a telescopic rod group, the outer side of the fixed frame is provided with a connecting assembly, the connecting assembly is connected to an external column and can automatically reset the fixed frame, the telescopic frame is slidably connected in the fixed frame, one end of the telescopic rod group is fixedly connected to the telescopic frame, and the other end is slidably connected in the fixed frame, a sealing sleeve is provided at the position where the telescopic rod group is connected to the fixed frame, a blowing assembly is connected to the sleeve, and the blowing assembly is used to clean the telescopic rod group, the outer side of the telescopic frame is also provided with a hook 1 and a hook 2, and a blocking plate assembly is provided on the hook 2. The present invention enables the guardrail to achieve telescopic adjustment of the length within an achievable range by arranging a telescopic frame to cooperate with the fixed frame, so that the same set of guardrails can meet the installation requirements of guardrail doors with more different requirements.

Description

Technical Field

[0001] The present invention relates to the field of guardrail devices, in particular to a telescopic guardrail. Background Art

[0002] On the scaffolding of some construction sites or temporary construction work sites, guardrails are generally used to separate the entire construction area from the outside world. There must be guardrail gates for people to pass through on these guardrails. Due to different construction requirements at construction sites, the construction equipment and construction materials required to pass through the guardrail gates are different. In addition, due to construction conditions such as terrain when building guardrails, the width of the guardrail gates reserved for each construction site is different. Therefore, the sizes of the guardrails installed at the guardrail gates are also different. It often happens that the guardrail that was normally used at the previous construction site cannot be used normally at the next construction site and can only be abandoned or re-welded or cut, resulting in huge waste. In addition, the environment at the construction site is very harsh and dusty, and it is very easy to dirty the active position of the guardrail, which affects the activity of the guardrail at the guardrail gate. Summary of the Invention

[0003] The object of the present invention is to provide a telescopic guardrail to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a telescopic guardrail, comprising a fixed frame, a telescopic frame and a telescopic rod group, the outer side of the fixed frame is provided with a connecting assembly, the connecting assembly is connected to the external column and can automatically reset the fixed frame, the telescopic frame is slidably connected in the fixed frame, one end of the telescopic rod group is fixedly connected to the telescopic frame, and the other end is slidably connected in the fixed frame, a sealing sleeve is provided at the position where the telescopic rod group is connected to the fixed frame, a blowing assembly is connected to the sleeve, and the blowing assembly is used to clean the telescopic rod group, the outer side of the telescopic frame is also provided with a hook 1 and a hook 2, a blocking plate assembly is provided on the hook 2, and the blocking plate assembly is used to block the telescopic rod assembly.

[0005] Preferably, the fixed frame includes two fixed cross bars, a vertical rod and a sliding sleeve connecting rod. The fixed cross bars are hollow rods. The fixed cross bars are connected by vertical rods and sliding sleeve connecting rods. Sliding sleeves are provided between the sliding sleeve connecting rods, and a connecting assembly is provided on the outside of the vertical rod.

[0006] Preferably, the telescopic frame includes a support rod and a connecting rod, the support rod is slidably connected in the fixed cross rod, and the connecting rod is connected to the two support rods and is located at one end away from the sliding sleeve connecting rod.

[0007] Preferably, the telescopic rod assembly includes a telescopic rod, a connecting pin, a sliding plate, a spring and a pressing plate, one end of the telescopic rod is fixedly connected to the connecting rod, and the other end of the telescopic rod is slidably connected in the sliding sleeve, and a plurality of positioning holes are provided on the telescopic rod, the connecting pin is fixedly connected to the bottom of the sliding plate and the connecting pin can be inserted into the positioning hole, the inner side of the sliding plate is slidably connected in the sliding sleeve connecting rod, and a spring is provided above the sliding plate, the upper end of the spring presses on the pressing plate, and the pressing plate is fixed to the sliding sleeve connecting rod.

[0008] Preferably, the connecting assembly includes a connecting block, a torsion spring, a bolt and a connecting bent plate, one end of the connecting block is fixedly connected to the connecting bent plate, and the other end is connected to an external column, the connecting bent plate is installed on the end of the fixed cross bar by a bolt, one protruding end of the torsion spring is connected to the connecting block, and the other protruding end is connected to the end of the fixed cross bar, and the torsion spring is sleeved on the bolt.

[0009] Preferably, the blowing assembly includes an air bag and an air tube. The air bag is provided in two groups arranged side by side. The air bag is installed at the end of a fixed cross bar. An air tube is provided on the side of the air bag, and the end of the air tube is connected to the sleeve.

[0010] Preferably, both ends of the working surface of the hook 2 are provided with sliding inclined surfaces, the top surface of the hook 2 is provided with a buffer pad, a return spring is provided above the buffer pad, a limit plate is provided on the top of the return spring, and the limit plate is fixed on the connecting rod.

[0011] Preferably, the blocking plate assembly includes a rack, a gear, a rotating shaft, a connecting ring and a shielding plate, the rack is slidably connected in the fixed rod, the bottom of the rack is connected to the buffer pad, the gear is meshed with the rack, the gear is fixed on the rotating shaft, the rotating shaft is rotatably connected in the connecting rod, the connecting ring is fixed on the rotating shaft, a connecting plate is provided on the connecting ring, a connecting port is provided on the connecting plate, a connecting piece is provided at one end of the shielding plate, and a connecting port is provided at the other end, the shielding plate is connected to the connecting port on the connecting plate through the connecting piece, and the connecting piece on any shielding plate can be connected to the connecting port of the next shielding plate.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The present invention provides a retractable telescopic frame to cooperate with a fixed frame, so that the guardrail can be adjusted in length within a certain range, so that the same set of guardrails can be installed at guardrail gates with different requirements;

[0014] 2. The air blowing assembly designed in the present invention can blow out the dust in the telescopic rod when opening and closing the guardrail, preventing the telescopic rod from being covered by dust and causing obstruction of the telescopic rod's extension;

[0015] 3. The blocking plate assembly can block the positioning hole of the telescopic rod when the guardrail is stationary, preventing dust from entering the positioning hole and affecting the extension and retraction of the telescopic rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention;

[0017] Figure 2 It is a schematic diagram of the structure of the present invention;

[0018] Figure 3 for Figure 1 A magnified view of the structure at inner C;

[0019] Figure 4 for Figure 2 A magnified view of the structure at inner A;

[0020] Figure 5 for Figure 2 A magnified view of the structure at inner B;

[0021] Figure 6 This is a structural schematic diagram of the sealing plate assembly of the present invention.

[0022] In the figure: 1-fixed frame; 11-fixed crossbar; 12-vertical rod; 13-sliding sleeve connecting rod; 14-sliding sleeve;

[0023] 2- telescopic frame; 21- support rod; 22- connecting rod;

[0024] 3-telescopic rod assembly; 31-telescopic rod; 32-connecting pin; 33-sliding plate; 34-spring; 35-pressing plate; 36-positioning hole;

[0025] 4-connecting assembly; 41-connecting block; 42-torsion spring; 43-bolt; 44-connecting bent plate;

[0026] 5-sleeve;

[0027] 6-blowing assembly; 61-air bag; 62-trachea;

[0028] 7-Hook one;

[0029] 8-hook 2; 81-buffer pad; 82-reset spring; 83-limiting piece;

[0030] 9-blocking plate assembly; 91-rack; 92-gear; 93-rotating shaft; 94-connecting ring; 95-shielding plate; 96-connecting plate. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] See also Figures 1 to 6 The present invention provides a technical solution: a telescopic guardrail, comprising a fixed frame 1, a telescopic frame 2 and a telescopic rod group 3, the outer side of the fixed frame 1 is provided with a connecting assembly 4, the connecting assembly 4 is connected to the external column and can automatically reset the fixed frame 1, the telescopic frame 2 is slidably connected in the fixed frame 1, one end of the telescopic rod group 3 is fixedly connected to the telescopic frame 2, and the other end is slidably connected in the fixed frame 1, a sealing sleeve 5 is provided at the position where the telescopic rod group 3 is connected to the fixed frame 1, a blowing assembly 6 is connected to the sleeve 5, and the blowing assembly 6 is used to clean the telescopic rod group 3, the outer side of the telescopic frame 2 is also provided with a hook 1 7 and a hook 2 8, the hook 2 8 is provided with a blocking plate assembly 9, and the blocking plate assembly 9 is used to block the telescopic rod assembly 3.

[0033] In this embodiment, the fixed frame 1 includes two fixed cross bars 11, a vertical bar 12 and a sliding sleeve connecting rod 13. The fixed cross bars 11 are hollow rods. The fixed cross bars 11 are connected by the vertical bar 12 and the sliding sleeve connecting rod 13. A sliding sleeve 14 is provided between the sliding sleeve connecting rods 13. A connecting assembly 4 is provided on the outside of the vertical bar 12. The two fixed cross bars 11 are connected by the vertical bar 12, and the entire frame is combined into a rectangle by the sliding sleeve connecting rod 13 to form a fixed frame 1.

[0034] In this embodiment, the telescopic frame 2 includes a support rod 21 and a connecting rod 22. The support rod 21 is slidably connected in the fixed cross bar 11. The connecting rod 22 is connected to the two support rods 21 and is located at one end away from the sliding sleeve connecting rod 13. The telescopic function is achieved by the support rod 21 that can move freely in the fixed cross bar 11.

[0035] In this embodiment, the telescopic rod assembly 3 includes a telescopic rod 31, a connecting pin 32, a sliding plate 33, a spring 34 and a pressing piece 35. One end of the telescopic rod 31 is fixedly connected to the connecting rod 22, and the other end of the telescopic rod 31 is slidably connected to the sliding sleeve 14. A plurality of positioning holes 36 are provided on the telescopic rod 31. The connecting pin 32 is fixedly connected to the bottom of the sliding plate 33 and the connecting pin 32 can be inserted into the positioning hole 36. The inner side of the sliding plate 33 is slidably connected to the sliding sleeve connecting rod 13. The sliding plate 3 3 is provided with a spring 34, the upper end of the spring 34 is pressed on the pressing plate 35, and the pressing plate 35 is fixed to the sliding sleeve connecting rod 13. When adjusting the length of the guardrail, first move the sliding plate 33 to compress the spring 34, and the connecting pin 32 slides out of the positioning hole 36. The extension distance of the telescopic frame 2 is adjusted by the telescopic rod 31, and then the sliding plate 33 is released to allow the connecting pin 32 to re-enter the positioning hole 36, lock the telescopic rod 31, and fix the position of the telescopic frame 2. A number of positioning holes 36 are provided to meet as many length requirements as possible.

[0036] In this embodiment, the connecting assembly 4 includes a connecting block 41, a torsion spring 42, a bolt 43 and a connecting bent plate 44. One end of the connecting block 41 is fixedly connected to the connecting bent plate 44, and the other end is connected to an external column. The connecting bent plate 44 is installed at the end of the fixed cross bar 11 through a bolt 43. One protruding end of the torsion spring 42 is connected to the connecting block 41, and the other protruding end is connected to the end of the fixed cross bar 11. The torsion spring 42 is sleeved on the bolt 43. One end of the torsion spring 42 is connected to the fixed connecting block 41, and the other end is connected to the fixed cross bar 11. When the entire guardrail is opened, the torsion spring 42 is deformed by force. After passing through the guardrail, the guardrail is subjected to the force of the torsion spring 42, so that the guardrail door returns to its position.

[0037] In this embodiment, the blowing assembly 6 includes an airbag 61 and an air pipe 62. The airbag 61 is provided with two groups arranged side by side. The airbag 61 is installed at the end of the fixed cross bar 11. The side of the airbag 61 is provided with an air pipe 62. The end of the air pipe 62 is connected to the sleeve 5. When the guardrail is rotated, the fixed frame 1 will rotate around the bolt 43. At this time, the rotating fixed cross bar 11 will squeeze the airbag 61, so that the air in the airbag 61 is discharged. The air flows along the air pipe 62 into the sleeve 5, and enters the telescopic rod 31 through the sleeve 5, blowing the dust that falls into the telescopic rod 31 out from the positioning hole 36. Since two groups of airbags 61 are provided, it can be ensured that the fixed frame 1 can generate airflow when it rotates to either side. The airbag 61 is made of a rubber material that can automatically rebound.

[0038] In this embodiment, both ends of the working surface of the hook 2 8 are provided with sliding inclined surfaces, a buffer pad 81 is provided on the top surface of the hook 2 8, a reset spring 82 is provided above the buffer pad 81, and a limit plate 83 is provided on the top of the reset spring 82. The limit plate 83 is fixed on the connecting rod 22, a locking block for engagement is provided at the hook 1 7, and a wear-resistant block is provided at the hook 2 8. After the hook 2 8 is reset following the rotation of the guardrail, the wear-resistant block will press the hook 2 8 through the sliding inclined surface so that the hook 2 8 is pressed to move upward, and when the guardrail is pushed open, it will be driven downward by the reset spring 82.

[0039] In this embodiment, the blocking plate assembly 9 includes a rack 91, a gear 92, a rotating shaft 93, a connecting ring 94 and a shielding plate 95. The rack 91 is slidably connected to the fixed rod 22, and the bottom of the rack 91 is connected to the buffer pad 81. The gear 92 is meshed with the rack 91, and the gear 92 is fixed on the rotating shaft 93. The rotating shaft 93 is rotatably connected to the connecting rod 22. The connecting ring 94 is fixed on the rotating shaft 93. A connecting plate 96 is provided on the connecting ring 94, and a connecting port is provided on the connecting plate 96. One end of the shielding plate 95 is provided with a connecting piece, and the other end is provided with a connecting port. The shielding plate 95 is connected to the connecting port on the connecting plate 96 through the connecting piece. Any shielding plate 95 The connecting pieces on can be connected to the connecting port of the next baffle plate 95. When the hook 2 8 moves up, it will push the rack 91 to move up and drive the gear 92 to rotate, which will cause the connecting ring 94 to rotate. The connecting ring 94 can drive the baffle plate 95 to rotate 90°, so that the baffle plate 95 no longer covers the positioning hole 36, which facilitates the air in the telescopic rod 36 to be ejected. After the hook 2 8 is reset, the baffle plate 95 can be reversed 90° and the positioning hole 36 can be blocked again to minimize the amount of dust entering the guardrail when it is stationary. The baffle plate 95 used here is made of elastic plastic plate. The connecting piece and the connecting buckle are engaged through the elastic deformation of the material itself, and the baffle plate 95 can be increased or decreased according to the extension length of the telescopic rod 31.

[0040] The working principle is as follows: when in use, first install the entire guardrail to the external column through the connecting block 41, then compress the spring 34 by toggling the sliding plate 33, and the connecting pin 32 slides out of the positioning hole 36 to adjust the extension distance of the telescopic rod 31 of the telescopic frame 2. After adjusting to the appropriate length, loosen the sliding plate 33, so that the connecting pin 32 re-enters the positioning hole 36, locks the telescopic rod 31, and fixes the position of the telescopic frame 2 to obtain a guardrail of appropriate length. Then, in use, as the guardrail opens and closes, the fixed cross bar 11 will squeeze the airbag 61, expelling air from the airbag 61, and the air flows into the sleeve 5 along the air pipe 62, enters the telescopic rod 31 through the sleeve 5, and blows the dust falling into the telescopic rod 31 out from the positioning hole 36. When it is stationary, the shielding plate 95 blocks the positioning hole 36 again, minimizing the amount of dust entering the guardrail when it is stationary, and preventing dust from entering the telescopic rod 31 and affecting the length adjustment of the telescopic rod 31.

[0041] Based on the above, the present invention sets a retractable telescopic frame to cooperate with the fixed frame, so that the guardrail can achieve telescopic adjustment of the length within a achievable range, so that the same set of guardrails can meet the installation requirements of more guardrail doors with different requirements.

[0042] It is understood from common technical knowledge that the present invention may be implemented by other embodiments that do not depart from its spirit or essential features. Therefore, the embodiments disclosed above are, in all respects, merely illustrative and not exclusive. All modifications within the scope of the present invention or equivalent to the scope of the present invention are intended to be encompassed by the present invention.

Claims

1. A telescopic guardrail, characterized by: The invention comprises a fixed frame (1), a telescopic frame (2) and a telescopic rod group (3); the outer side surface of the fixed frame (1) is provided with a connecting assembly (4); the connecting assembly (4) is connected to an external column and can automatically reset the fixed frame (1); the telescopic frame (2) is slidably connected in the fixed frame (1); one end of the telescopic rod group (3) is fixedly connected to the telescopic frame (2), and the other end is slidably connected in the fixed frame (1); a sleeve (5) with a sealing connection is provided at the position where the telescopic rod group (3) is connected to the fixed frame (1); a blowing assembly (6) is connected to the sleeve (5); the blowing assembly (6) is used to clean the telescopic rod group (3); the outer side of the telescopic frame (2) is also provided with a hook 1 (7) and a hook 2 (8); the hook 2 (8) is provided with a blocking plate assembly (9); the blocking plate assembly (9) is used to block the telescopic rod assembly (3); The fixed frame (1) comprises two fixed cross bars (11), a vertical bar (12) and a sliding sleeve connecting bar (13); the fixed cross bars (11) are hollow bars; the fixed cross bars (11) are connected via the vertical bar (12) and the sliding sleeve connecting bar (13); a sliding sleeve (14) is provided between the sliding sleeve connecting bars (13); and a connecting assembly (4) is provided on the outer side of the vertical bar (12); The connecting assembly (4) comprises a connecting block (41), a torsion spring (42), a bolt (43) and a connecting bent plate (44); one end of the connecting block (41) is fixedly connected to the connecting bent plate (44), and the other end is connected to an external column; the connecting bent plate (44) is mounted on the end of the fixed cross bar (11) through a bolt (43); one protruding end of the torsion spring (42) is connected to the connecting block (41), and the other protruding end is connected to the end of the fixed cross bar (11); the torsion spring (42) is sleeved on the bolt (43); The blowing assembly (6) comprises an air bag (61) and an air pipe (62). The air bag (61) is provided with two groups arranged side by side. The air bag (61) is installed at the end of the fixed cross bar (11). The air pipe (62) is provided on the side of the air bag (61). The end of the air pipe (62) is connected to the sleeve (5).

2. The telescopic guardrail according to claim 1, characterized in that: The telescopic frame (2) comprises a support rod (21) and a connecting rod (22), wherein the support rod (21) is slidably connected in the fixed cross rod (11), and the connecting rod (22) is connected to the two support rods (21) and is located at one end away from the sliding sleeve connecting rod (13).

3. The telescopic guardrail according to claim 2, characterized in that: The telescopic rod assembly (3) comprises a telescopic rod (31), a connecting pin (32), a sliding plate (33), a spring (34) and a pressing plate (35). One end of the telescopic rod (31) is fixedly connected to the connecting rod (22), and the other end of the telescopic rod (31) is slidably connected in the sliding sleeve (14). A plurality of positioning holes (36) are provided on the telescopic rod (31). The connecting pin (32) is fixedly connected to the bottom of the sliding plate (33) and the connecting pin (32) can be inserted into the positioning holes (36). The inner side of the sliding plate (33) is slidably connected in the sliding sleeve connecting rod (13). A spring (34) is provided above the sliding plate (33). The upper end of the spring (34) presses on the pressing plate (35), and the pressing plate (35) is fixed on the sliding sleeve connecting rod (13).

4. The telescopic guardrail according to claim 3, characterized in that: Both ends of the working surface of the hook 2 (8) are provided with sliding inclined surfaces, a buffer pad (81) is provided on the top surface of the hook 2 (8), a return spring (82) is provided above the buffer pad (81), a limit plate (83) is provided on the top of the return spring (82), and the limit plate (83) is fixed on the connecting rod (22).

5. The telescopic guardrail according to claim 4, characterized in that: The blocking plate assembly (9) comprises a rack (91), a gear (92), a rotating shaft (93), a connecting ring (94) and a shielding plate (95), wherein the rack (91) is slidably connected in the fixing rod (22), the bottom of the rack (91) is connected to the buffer pad (81), the gear (92) is meshed with the rack (91), the gear (92) is fixed on the rotating shaft (93), the rotating shaft (93) is rotatably connected in the connecting rod (22), the connecting ring (94) is fixed on the rotating shaft (93), a connecting plate (96) is provided on the connecting ring (94), a connecting port is provided on the connecting plate (96), one end of the shielding plate (95) is provided with a connecting piece, and the other end is provided with a connecting port, the shielding plate (95) is connected to the connecting port on the connecting plate (96) through the connecting piece, and the connecting piece on any shielding plate (95) can be connected to the connecting port of the next shielding plate (95).

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