An opening assisting device in a tunnel cable trench
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LIAONING TRAFFIC COMM DEV CO LTD
- Filing Date
- 2025-07-16
- Publication Date
- 2026-07-10
Smart Images

Figure CN224478878U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hole-opening assistance technology, specifically to a hole-opening assistance device for cable trenches in tunnels. Background Technology
[0002] Cable trenches are installed on both sides of highway tunnels to carry cables that power the tunnel's lighting or electrical control equipment. Holes need to be drilled in the inner walls of these trenches to install support frames and other structures to assist in cable support and cable management. Currently, most methods involve operators entering the trench, marking the drilling locations, and then operating a drill. However, due to the confined space inside the cable trench, drilling is inconvenient, and prolonged operation in such a confined space increases operator fatigue and reduces comfort during construction. Therefore, we propose an auxiliary device for drilling holes in tunnel cable trenches. Utility Model Content
[0003] The purpose of this utility model is to provide an auxiliary device for opening holes in cable trenches in tunnels, so as to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, the present invention provides the following technical solution: an auxiliary device for opening holes in a tunnel cable trench, comprising a fixed frame, a movable component fixedly mounted at the end of the fixed frame, a lifting mechanism fixedly mounted inside the fixed frame, an assembly mechanism mounted on the side wall of the lifting mechanism, and a drilling rig mounted inside the assembly mechanism;
[0005] The assembly mechanism includes a first fixed tube and a second fixed tube. A movable frame is slidably connected to the outer walls of the first fixed tube and the second fixed tube. One end of a connecting arm is hinged to the top of the movable frame, and a push rod is hinged to the other end of the connecting arm. A second handle is fixedly connected to the top of the push rod, and the bottom of the push rod is rotatably connected to the side wall of the lifting mechanism.
[0006] Preferably, a first mounting plate and a second mounting plate are fixedly assembled inside the mobile frame, and the drilling rig is fixedly assembled to the side walls of the first mounting plate and the second mounting plate.
[0007] Preferably, the lifting mechanism includes a fixing nut, which is fixedly connected inside the fixing frame. A connecting screw is screwed into the fixing nut. A first nut and a second nut are fixedly connected to the top and bottom of the connecting screw, respectively. A lifting tube is sleeved on the outer side wall of the connecting screw.
[0008] Preferably, the movable component includes a mounting frame, which is fixedly connected to the side wall of a fixed frame. The bottom of the mounting frame is symmetrically equipped with first moving wheels at the front and rear. An auxiliary mounting block is fixedly connected to the side wall of the mounting frame. The bottom of the auxiliary mounting block is equipped with a second moving wheel. A first handle is fixedly connected between the fixed frame and the auxiliary mounting block.
[0009] Preferably, a limiting frame is fixedly connected inside the fixing frame.
[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: A hole-drilling auxiliary device for cable trenches in tunnels allows for the following: After marking the drilling position in the cable trench, the drilling height of the drill is adjusted by a lifting mechanism to align the drill with the drilling height position in the cable trench. Then, the fixed frame is moved by a moving component. After aligning the drill with the drilling position, the moving frame and the drill can be moved by a push rod to complete the drilling operation. Using this utility model allows operators to perform drilling operations on the outside of the cable trench, eliminating the need for drilling operations in the narrow diameter of the cable trench, thus reducing the labor intensity of the operators. Attached Figure Description
[0011] Figure 1 This is a perspective view of the present invention.
[0012] Figure 2 This is a schematic diagram of the structure of this utility model.
[0013] Figure 3 This is a schematic diagram showing the action of the drilling rig driven by the push rod of this utility model.
[0014] Figure 4 This is a schematic diagram of the drilling rig after the mobile frame of this utility model drives it to deflect.
[0015] Figure 5 This is a schematic diagram of the structure of this utility model when drilling holes in a cable trench.
[0016] In the diagram: 1. Fixed frame; 2. Moving component; 21. Mounting frame; 22. First moving wheel; 23. Auxiliary mounting block; 24. Second moving wheel; 25. First handle frame; 3. Lifting mechanism; 31. Fixing nut; 32. Connecting screw; 33. First nut; 34. Second nut; 35. Lifting pipe; 4. Assembly mechanism; 41. First fixing pipe; 42. Second fixing pipe; 43. Push rod; 44. Second handle frame; 45. Connecting arm; 46. Moving frame; 461. First mounting plate; 462. Second mounting plate; 5. Drilling rig; 6. Limiting frame. Detailed Implementation
[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.
[0018] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 This utility model provides a technical solution: an auxiliary device for drilling holes in a cable trench in a tunnel, including a fixed frame 1, which is rectangular and welded from steel pipes. A movable component 2 is welded and fixed to the end of the fixed frame 1. The fixed frame 1 and the movable component 2 form an L-shaped structure. The movable component 2 facilitates the movement of the fixed frame 1 at the top of the cable trench. A lifting mechanism 3 is installed inside the fixed frame 1. An assembly mechanism 4 is installed on the side wall of the lifting mechanism 3. The assembly mechanism 4 is used for assembling and fixing a drilling rig 5. The overall height position of the assembly mechanism 4 can be adjusted by the lifting mechanism 3, thereby adjusting the drilling height position of the drilling rig 5. The drilling rig 5 can be driven by the assembly mechanism 4 to realize the drilling operation on the inner side wall of the cable trench.
[0019] like Figure 1 As shown, the movable component 2 includes a mounting frame 21, which is welded and fixed to the end of the fixed frame 1. The bottom of the mounting frame 21 is equipped with first movable wheels 22 that are symmetrically distributed in front and rear. An auxiliary mounting block 23 is welded and fixed to the bottom side wall of the mounting frame 21. A second movable wheel 24 is equipped to the bottom of the auxiliary mounting block 23. The second movable wheel 24 and the first movable wheel 22 are triangularly distributed to improve the stability of the fixed frame 1 and the mounting frame 21 during the movement of the auxiliary fixed frame 1. A first handle 25 is welded and fixed between the side wall of the fixed frame 1 and the auxiliary mounting block 23. The first handle 25 can assist the overall movement of the fixed frame 1.
[0020] like Figure 2 As shown, the lifting mechanism 3 includes a fixing nut 31, which is welded and fixed inside the fixing frame 1. A connecting screw 32 is screwed into the fixing nut 31. A first nut 33 and a second nut 34 are welded and fixed to the top and bottom of the connecting screw 32, respectively. A lifting tube 35 is sleeved on the outer wall of the connecting screw 32. The lifting tube 35 is a regular quadrilateral. The second nut 34 is used to support the bottom of the lifting tube 35. The lifting tube 35 and the connecting screw 32 can rotate relative to each other. By turning the first nut 33, the relative position between the connecting screw 32 and the fixing nut 31 can be adjusted. When the connecting screw 32 descends, the lifting tube 35 can descend with the connecting screw 32. At the same time, the second nut 34 can limit the lifting tube 35 to prevent it from falling off the side wall of the connecting screw 32. The lifting tube 35 is used for assembling the assembly mechanism 4. The height of the drilling position can be adjusted by adjusting the height of the lifting tube 35.
[0021] like Figure 1 and Figure 2 As shown, the assembly mechanism 4 includes a first fixed tube 41 and a second fixed tube 42. The first fixed tube 41 and the second fixed tube 42 are welded and fixed to the side wall of the lifting tube 35. One end of the push rod 43 is rotatably connected to the side wall of the lifting tube 35. The other end of the push rod 43 is welded and fixed to a second handle 44. The push rod 43 can be pushed forward with its connection point with the lifting tube 35 as the axis through the second handle 44. One end of the connecting arm 45 is hinged to the side wall of the push rod 43. The other end of the connecting arm 45 is hinged to a moving frame 46. The moving frame 46 is slidably connected to the first fixed tube 41 and the second fixed tube 42. The first fixed tube 41 and the second fixed tube 42 can limit the movement stroke of the moving frame 46. When the push rod 43 moves, the connecting arm 45 can drive the moving frame 46 to move forward along the first fixed tube 41 and the second fixed tube 42.
[0022] The movable frame 46 has an integrally formed first mounting plate 461 and second mounting plate 462. The first mounting plate 461 and the second mounting plate 462 are used for the installation and fixation of the drilling rig 5. The drilling rig 5 can be fixed to the side walls of the first mounting plate 461 and the second mounting plate 462 by binding and fastening. When the movable frame 46 moves along the first fixing pipe 41 and the second fixing pipe 42, the drilling rig 5 can be moved to complete the drilling operation.
[0023] like Figure 1 and Figure 3 As shown, a limiting frame 6 is welded and fixed inside the fixed frame 1. The limiting frame 6 consists of two parts, one of which is linear and the other of which is L-shaped. By setting the limiting frame 6, the pushing stroke of the push rod 43 can be limited.
[0024] Working principle: Please refer to Figure 3 , Figure 4 and Figure 5 The process of drilling holes in the cable trench using this device will now be described, such as... Figure 5 and Figure 3 As shown, when drilling is required on the sidewall of the cable trench, the moving component 2 assists the fixed frame 1 to move to the drilling position. Then, the drilling height can be adjusted by turning the connecting screw 32. After adjusting the drilling position to the specified drilling height, the push rod 43 is pushed, causing the connecting arm 45 to drive the moving frame 46 along the first fixed pipe 41 and the second fixed pipe 42, so that the drill rig 5 drills into the sidewall of the cable trench. After drilling is completed, since there may be cables already installed in the cable trench, directly moving the fixed frame 1 and the drill rig 5 may damage the cables. Therefore, the lifting pipe 35 can be rotated along the connecting screw 32, so that the drill rig 5 is positioned as follows: Figure 4In the state shown, the limit frame 6 will not affect the rotation stroke of the push rod 43. After the fixed frame 1 and the drill 5 are moved to the next opening position by the moving component 2, the push rod 43 and the drill 5 are reset to complete the next operation.
Claims
1. An auxiliary device for opening holes in a tunnel cable trench, comprising a fixing frame (1), characterized in that, The fixed frame (1) is fixedly equipped with a moving component (2) at its end. The fixed frame (1) is fixedly equipped with a lifting mechanism (3). The side wall of the lifting mechanism (3) is equipped with an assembly mechanism (4). The assembly mechanism (4) is equipped with a drilling rig (5). The assembly mechanism (4) includes a first fixed tube (41) and a second fixed tube (42). A movable frame (46) is slidably connected to the outer side wall of the first fixed tube (41) and the second fixed tube (42). One end of a connecting arm (45) is hinged to the top of the movable frame (46), and a push rod (43) is hinged to the other end of the connecting arm (45). A second handle frame (44) is fixedly connected to the top of the push rod (43), and the bottom of the push rod (43) is rotatably connected to the side wall of the lifting mechanism (3).
2. The hole-opening auxiliary device in a tunnel cable trench according to claim 1, characterized in that: The movable frame (46) is fixedly equipped with a first mounting plate (461) and a second mounting plate (462), and the drilling rig (5) is fixedly equipped with the side walls of the first mounting plate (461) and the second mounting plate (462).
3. The hole-opening auxiliary device in a tunnel cable trench according to claim 1, characterized in that: The lifting mechanism (3) includes a fixing nut (31), which is fixedly connected inside the fixing frame (1). A connecting screw (32) is screwed into the fixing nut (31). A first nut (33) and a second nut (34) are fixedly connected to the top and bottom of the connecting screw (32), respectively. A lifting tube (35) is sleeved on the outer side wall of the connecting screw (32).
4. The hole-opening auxiliary device in a tunnel cable trench according to claim 1, characterized in that: The movable component (2) includes a mounting frame (21), which is fixedly connected to the side wall of the fixed frame (1). The bottom of the mounting frame (21) is symmetrically equipped with first moving wheels (22) in front and back. An auxiliary mounting block (23) is fixedly connected to the side wall of the mounting frame (21). The bottom of the auxiliary mounting block (23) is equipped with a second moving wheel (24). A first handle frame (25) is fixedly connected between the fixed frame (1) and the auxiliary mounting block (23).
5. The hole-opening auxiliary device in a tunnel cable trench according to claim 1, characterized in that: The fixed frame (1) is internally connected to the limiting frame (6).