A kind of anti-collapse supporting mechanism for road bridge tunnel construction

Abstract

The utility model discloses a kind of anti-collapse supporting mechanisms for road bridge tunnel construction, including several supporting frames and telescopic rod for connecting supporting frame, the supporting frame includes base, roof beam and two transmission boxes, the upper and lower sides of the transmission box are provided with support tube, transmission box is driven connection with two support tubes by bidirectional drive mechanism, the end of support tube away from transmission box is fixedly connected with connecting block, the both ends of the top of base and the both ends of the bottom of roof beam are fixedly installed with connecting sleeve, connecting block is installed in corresponding connecting sleeve;In the utility model, the plug rod is pulled out of corresponding jack by pull ring, and the baffle is located outside the blocking bar, then the plug rod and the baffle are rotated, so that the opening groove is staggered after the blocking bar, the pull ring is loosened, at this time the baffle will be resisted at the end of the blocking bar under the action of spring, and the plug rod cannot be inserted into the jack again under the action of spring, so that the connecting block is pulled out of connecting sleeve by single person, and it is simple and convenient to operate.

Description

Technical Field

[0001] This utility model relates to a support mechanism, specifically an anti-collapse support mechanism for road and bridge tunnel construction. Background Technology

[0002] During the tunnel construction process of road and bridge projects, tunnel support is required to prevent tunnel collapse.

[0003] A search revealed that patent CN222315157U discloses a collapse-prevention support mechanism for road and bridge tunnel construction. This mechanism utilizes a fixed cover, spring, pull block, and round-headed pin. When the lower socket is inserted into the lower slot at the bottom of the support column and the upper socket is inserted into the upper slot at the top of the moving column, the elastic force of the pull block drives the round-headed pin to insert into the side holes of the lower and upper sockets. This achieves automatic fixation between the lower socket and the support column, and between the moving column and the upper socket, offering excellent convenience.

[0004] In actual use, the above solution can automatically fix the lower socket and support column, and the moving column and upper socket. However, during disassembly, due to the action of the spring, after the round head pin is pulled out of the socket, it will be inserted back into the socket as soon as the handle is released. Since each socket is equipped with two round head pins, one person needs to pull both round head pins before another person can complete the disassembly, which is inconvenient and needs to be improved. Utility Model Content

[0005] The purpose of this utility model is to provide a collapse-prevention support mechanism for road and bridge tunnel construction, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A collapse-prevention support mechanism for road and bridge tunnel construction includes several support frames and telescopic rods for connecting the support frames. Each support frame includes a base, a top beam, and two transmission boxes. Support pipes are provided on both the upper and lower sides of each transmission box. The transmission box is connected to the two support pipes via a bidirectional drive mechanism. A connecting block is fixedly connected to the end of each support pipe away from the transmission box. Connecting sleeves are fixedly installed at both ends of the top of the base and both ends of the bottom of the top beam. The connecting blocks are inserted into the corresponding connecting sleeves. Inside, each of the connecting blocks has an insertion hole on its outer wall inside the connecting sleeve. A plug rod is installed through the corresponding part of the outer wall of the connecting sleeve and the insertion hole. A U-shaped frame is movably fitted on the outer wall of the plug rod outside the connecting sleeve. A spring is fitted on the outer wall of the plug rod inside the U-shaped frame. A baffle is fixedly fitted on the outer wall of the plug rod inside the U-shaped frame. A baffle strip is fixedly installed on the inner wall of the U-shaped frame. An opening groove adapted to the baffle strip is opened on the outer wall of the baffle. A pull ring is fixedly connected to the end of the plug rod away from the insertion hole.

[0008] As a further embodiment of this utility model: the bidirectional drive mechanism includes a bidirectional screw that is rotatably mounted on the transmission box, with both ends of the bidirectional screw located inside corresponding support tubes. A drive shaft is rotatably mounted on the outer wall of the transmission box. A bolt head is fixedly connected to one end of the drive shaft outside the transmission box, and the other end of the drive shaft is connected to the bidirectional screw. Two first nuts are symmetrically fitted onto the outer wall of the bidirectional screw, and the end of the support tube away from the connecting block is fixedly connected to the corresponding first nut.

[0009] As a further embodiment of this utility model: both the bidirectional screw and the transmission shaft are fixedly sleeved with bevel gears on the outer wall inside the transmission box, and the two bevel gears inside the transmission box mesh with each other.

[0010] As a further embodiment of this utility model: both ends of the transmission box are fixedly installed with first sleeves, the support tube and the first nut are located in the corresponding first sleeves, two guide rods are symmetrically fixedly installed on the inner wall of the first sleeve, and the outer wall of the first nut is provided with a sliding groove adapted to the guide rod, and the guide rod passes through the corresponding sliding groove.

[0011] As a further embodiment of this utility model: a guide sleeve is fixedly connected to the end of the first sleeve away from the transmission box, and a sealing ring is embedded in the guide sleeve, with the inner wall of the sealing ring fitting against the outer wall of the support tube.

[0012] As a further embodiment of this utility model: the two opposite outer walls of the transmission box and the connecting sleeve are fixedly connected with connecting ears, and the two ends of the telescopic rod are fixedly installed with U-shaped blocks. The U-shaped blocks are detachably connected to the corresponding connecting ears through bolt and nut assemblies.

[0013] As a further embodiment of this utility model: the telescopic rod includes a second screw, a second nut is fitted onto the outer wall of the second screw, a second sleeve is fixedly installed on the outer wall of the second nut, and the ends of the second sleeve and the second nut that are far apart from each other are respectively fixedly connected to corresponding U-shaped blocks.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] In this invention, the plug rod is pulled out of the corresponding insertion hole by the pull ring, and the baffle is positioned outside the baffle. Then, the plug rod and the baffle are rotated so that the opening slot is misaligned with the baffle. After releasing the pull ring, the baffle will press against the end of the baffle under the action of the spring, and the plug rod will not be able to be inserted into the insertion hole again under the action of the spring. This makes it easy for a single person to pull the connecting block out of the connecting sleeve, and the operation is simple and convenient. Attached Figure Description

[0016] Figure 1This is a structural schematic diagram of an anti-collapse support mechanism used in road, bridge, and tunnel construction.

[0017] Figure 2 This is a schematic diagram of the connecting ear structure in an anti-collapse support mechanism for road and bridge tunnel construction.

[0018] Figure 3 for Figure 1 A magnified view of a portion of the image.

[0019] Figure 4 for Figure 1 Enlarged view of point A in the middle.

[0020] The components include: transmission box 1, double-acting screw 2, transmission shaft 3, bolt head 4, bevel gear 5, support tube 6, first nut 7, first sleeve 8, guide rod 9, guide sleeve 10, sealing ring 11, connecting block 12, insertion hole 13, base 14, top beam 15, connecting sleeve 16, insertion rod 17, U-shaped frame 18, pull ring 19, baffle 20, spring 21, stop bar 22, opening groove 23, connecting ear 24, second sleeve 25, second nut 26, second screw 27, and U-shaped block 28. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-4In this embodiment of the utility model, a collapse-prevention support mechanism for road and bridge tunnel construction includes several support frames and telescopic rods for connecting the support frames. Each support frame includes a base 14, a top beam 15, and two transmission boxes 1. Support pipes 6 are provided on both the upper and lower sides of each transmission box 1. The transmission box 1 is connected to the two support pipes 6 via a bidirectional drive mechanism. A connecting block 12 is fixedly connected to the end of each support pipe 6 away from the transmission box 1. Connecting sleeves 16 are fixedly installed at both ends of the top of the base 14 and both ends of the bottom of the top beam 15. The connecting blocks 12 are inserted into the corresponding connecting sleeves 16. Block 12 has insertion holes 13 on its outer wall inside the connecting sleeve 16. Insert rods 17 are installed through the corresponding positions of the insertion holes 13 on the outer wall of the connecting sleeve 16. A U-shaped frame 18 is movably fitted on the outer wall of the insert rod 17 outside the connecting sleeve 16. A spring 21 is fitted on the outer wall of the insert rod 17 inside the U-shaped frame 18. A baffle 20 is fixedly fitted on the outer wall of the insert rod 17 inside the U-shaped frame 18. A baffle strip 22 is fixedly installed on the inner wall of the U-shaped frame 18. An opening groove 23 adapted to the baffle strip 22 is opened on the outer wall of the baffle 20. A pull ring 19 is fixedly connected to the end of the insert rod 17 away from the insertion hole 13.

[0023] By adopting the above-described solution, during installation, after inserting the connecting block 12 into the corresponding connecting sleeve 16, the bidirectional drive mechanism can be operated to drive the support tube 6 to move away from the transmission box 1, so as to lift the top beam 15 upward to the required height. Then, the insertion rod 17 is inserted into the corresponding insertion hole 13 to lock the connecting block 12 and the connecting sleeve 16, thus completing the assembly of the support frame. Finally, the length of the telescopic rod is adjusted, and multiple telescopic rods are used to fix each pair of adjacent support frames to each other. The operation is simple and convenient. When disassembling the entire support mechanism, after removing each telescopic rod, pull the insert rod 17 out of the corresponding insertion hole 13 using the pull ring 19, and position the baffle 20 outside the baffle 22. Then rotate the insert rod 17 and the baffle 20 so that the opening slot 23 is misaligned with the baffle 22. Release the pull ring 19. At this time, the baffle 20 will press against the end of the baffle 22 under the action of the spring 21, and the insert rod 17 will not be able to be inserted into the insertion hole 13 again under the action of the spring 21. This makes it easy for a single person to pull the connecting block 12 out of the connecting sleeve 16, and the operation is simple and convenient.

[0024] Specific combination Figure 3In one embodiment of this utility model, the bidirectional drive mechanism includes a bidirectional screw 2 rotatably mounted on the transmission box 1. The two ends of the bidirectional screw 2 are located in the corresponding support tubes 6. A drive shaft 3 is rotatably mounted on the outer wall of the transmission box 1. A bolt head 4 is fixedly connected to one end of the drive shaft 3 outside the transmission box 1. The other end of the drive shaft 3 is connected to the bidirectional screw 2. Two first nuts 7 are symmetrically fitted on the outer wall of the bidirectional screw 2. The end of the support tube 6 away from the connecting block 12 is fixedly connected to the corresponding first nut 7.

[0025] By engaging the handle or power tool with the bolt head 4, the drive shaft 3 can be driven to rotate, causing the bidirectional screw 2 to rotate on the transmission box 1. The bidirectional screw 2, in conjunction with the first nut 7, can drive the two support tubes 6 to move in opposite directions simultaneously, making the operation simple and convenient.

[0026] Specific combination Figure 3 Based on the previous embodiment, the bidirectional screw 2 and the transmission shaft 3 are further provided with bevel gears 5 fixedly sleeved on the outer walls of the transmission box 1. The two bevel gears 5 in the transmission box 1 mesh with each other, thereby facilitating the rotation of the bidirectional screw 2.

[0027] Specific combination Figure 1-3 In one embodiment of this utility model, a first sleeve 8 is fixedly installed at both ends of the transmission box 1, the support tube 6 and the first nut 7 are located in the corresponding first sleeve 8, two guide rods 9 are symmetrically fixedly installed on the inner wall of the first sleeve 8, and the outer wall of the first nut 7 is provided with a sliding groove that matches the guide rod 9, and the guide rod 9 passes through the corresponding sliding groove.

[0028] The guide rod 9, in conjunction with the slide groove, guides the first nut 7 within the first sleeve 8, thereby preventing the bidirectional screw 2 from causing the first nut 7 to rotate within the outer first sleeve 8, thus ensuring stable driving of the support tube 6.

[0029] Specific combination Figure 3 Based on the previous embodiment, the first sleeve 8 is further provided with a guide sleeve 10 fixedly connected to the end away from the transmission box 1. A sealing ring 11 is embedded in the guide sleeve 10, and the inner wall of the sealing ring 11 is in contact with the outer wall of the support tube 6.

[0030] By setting the guide sleeve 10 and the sealing ring 11, the sealing between the support tube 6 and the first sleeve 8 can be ensured, thereby preventing dust and impurities from entering the first nut 7, and ensuring the stability of the engagement between the bidirectional screw 2 and the first nut 7.

[0031] Specific combination Figure 2In one embodiment of this utility model, the two opposite outer walls of the transmission box 1 and the connecting sleeve 16 are fixedly connected with connecting ears 24, and the two ends of the telescopic rod are fixedly installed with U-shaped blocks 28. The U-shaped blocks 28 are detachably connected to the corresponding connecting ears 24 through bolt and nut assemblies. Through the cooperation of the connecting ears 24, U-shaped blocks 28 and bolt and nut assemblies, it is easy to fix the two ends of the telescopic rod to the corresponding support frame. The U-shaped blocks 28 are provided with through holes that are compatible with the bolt and nut assemblies.

[0032] Specific combination Figure 2 Based on the previous embodiment, the telescopic rod further includes a second screw 27, a second nut 26 is fitted onto the outer wall of the second screw 27, a second sleeve 25 is fixedly installed on the outer wall of the second nut 26, and the ends of the second sleeve 25 and the second nut 26 that are far apart from each other are respectively fixedly connected to the corresponding U-shaped blocks 28.

[0033] By rotating the second screw 27 on the second nut 26, the length of the second screw 27 extending out of the second sleeve 25 can be adjusted, thus facilitating the adjustment of the length of the telescopic rod. This makes it easy to adapt to the mutual fixation between two adjacent support frames with different layout spacings, and the operation is simple and convenient.

[0034] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A collapse-prevention support mechanism for road and bridge tunnel construction, characterized in that: The system includes several support frames and telescopic rods for connecting the support frames. Each support frame includes a base (14), a top beam (15), and two transmission boxes (1). Support tubes (6) are provided on both the upper and lower sides of each transmission box (1). The transmission box (1) is connected to the two support tubes (6) via a bidirectional drive mechanism. A connecting block (12) is fixedly connected to the end of each support tube (6) away from the transmission box (1). Connecting sleeves (16) are fixedly installed at both ends of the top of the base (14) and both ends of the bottom of the top beam (15). The connecting blocks (12) are installed inside the corresponding connecting sleeves (16). The outer wall of each connecting block (12) inside the connecting sleeve (16) has a [missing information]. A plug (17) is installed through the corresponding part of the outer wall of the connecting sleeve (16) and the plug (13). The plug (17) is movably fitted with a U-shaped frame (18) on the outer wall of the connecting sleeve (16). The plug (17) is fitted with a spring (21) on the outer wall of the U-shaped frame (18) inside the U-shaped frame (18). The plug (17) is fixedly fitted with a baffle (20) on the outer wall of the U-shaped frame (18) inside the U-shaped frame (18). A baffle (22) is fixedly installed on the inner wall of the U-shaped frame (18). The baffle (20) has an opening groove (23) on the outer wall that matches the baffle (22). A pull ring (19) is fixedly connected to the end of the plug (17) away from the plug (13).

2. The anti-collapse support mechanism for road and bridge tunnel construction according to claim 1, characterized in that: The bidirectional drive mechanism includes a bidirectional screw (2) that is rotatably mounted on the transmission box (1). Both ends of the bidirectional screw (2) are located in the corresponding support tube (6). A drive shaft (3) is rotatably mounted on the outer wall of the transmission box (1). One end of the drive shaft (3) located outside the transmission box (1) is fixedly connected to a bolt head (4). The other end of the drive shaft (3) is connected to the bidirectional screw (2) in a drive connection. Two first nuts (7) are symmetrically fitted on the outer wall of the bidirectional screw (2). The end of the support tube (6) away from the connecting block (12) is fixedly connected to the corresponding first nut (7).

3. The anti-collapse support mechanism for road and bridge tunnel construction according to claim 2, characterized in that: The bidirectional screw (2) and the drive shaft (3) are both fixedly fitted with bevel gears (5) on the outer wall inside the transmission box (1), and the bevel gears (5) in the two transmission boxes (1) mesh with each other.

4. The anti-collapse support mechanism for road and bridge tunnel construction according to claim 2, characterized in that: Both ends of the transmission box (1) are fixedly installed with first sleeves (8), the support tube (6) and the first nut (7) are located in the corresponding first sleeves (8), and two guide rods (9) are symmetrically fixedly installed on the inner wall of the first sleeve (8). The outer wall of the first nut (7) is provided with a sliding groove that matches the guide rod (9), and the guide rod (9) passes through the corresponding sliding groove.

5. The anti-collapse support mechanism for road and bridge tunnel construction according to claim 4, characterized in that: The first sleeve (8) is fixedly connected to a guide sleeve (10) at the end away from the transmission box (1). A sealing ring (11) is embedded in the guide sleeve (10), and the inner wall of the sealing ring (11) is in contact with the outer wall of the support tube (6).

6. The anti-collapse support mechanism for road and bridge tunnel construction according to claim 1, characterized in that: The transmission box (1) and the connecting sleeve (16) are both fixedly connected to the two opposite outer walls with connecting ears (24), and the telescopic rod is fixedly installed with U-shaped blocks (28) at both ends. The U-shaped blocks (28) are detachably connected to the corresponding connecting ears (24) by bolt and nut assembly.

7. The anti-collapse support mechanism for road and bridge tunnel construction according to claim 6, characterized in that: The telescopic rod includes a second screw (27), the outer wall of which is fitted with a second nut (26), the outer wall of which is fixedly installed with a second sleeve (25), and the ends of the second sleeve (25) and the second nut (26) that are far apart from each other are respectively fixedly connected to the corresponding U-shaped block (28).

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