Long pilot tunnel large dip angle splay cable saddle installation device

Abstract

The invention provides a long-pilot-tunnel large-dip-angle splay saddle mounting device which comprises a transport vehicle and a hoisting portal, a hoisting tackle is arranged on the hoisting portal, two rails are laid in a pilot tunnel, the width of the two rails is larger than that of a splay saddle, and the center line of the two rails and the center line of the splay saddle are located on the same vertical plane. The front end of the transport vehicle is upward, a first supporting frame is arranged in the direction inclined to the rear end of the transport vehicle, a splay cable saddle on the transport vehicle leans against the first supporting frame, and the splay cable saddle is perpendicular to a vehicle body of the transport vehicle. The V-shaped supporting structure with the opening facing the transport vehicle is formed by the first supporting frame and the second transport frame, the splay cable saddle is inserted, the splay cable saddle is supported by the first supporting frame and the second transport frame, the splay cable saddle is prevented from turning over towards the front end and the rear end of the transport vehicle, and transport and hoisting convenience of the splay cable saddle is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of road and bridge construction, and in particular relates to a long guide tunnel large-angle loose cable saddle installation device. Background Art

[0002] During the construction of suspension bridge tunnel anchors, the installation of loose cable saddles is the most critical construction step. For construction environments with long guide tunnels, narrow spaces and large inclination angles, such as guide tunnel inclination angles greater than 20°, the loose cable saddles are difficult to transport and install due to their heavy weight and large volume. At present, a traction installation system is usually set up in the guide tunnel, including a transport vehicle and a crane. The transport vehicle transports the loose cable saddle into the guide tunnel, and then the crane lifts it to the installation base of the loose cable saddle for installation. However, the loose cable saddle has a special shape (a regular triangle shape with a small top and a large bottom when viewed from the front, and an inverted triangle shape with a small top and a large bottom when viewed from the side). This shape is difficult to stably place on the transport vehicle on the guide tunnel ramp. In order to ensure that the transport vehicle can stably transport the loose cable saddle, in the conventional traction installation system, a special loose cable saddle fixing frame needs to be set up on the transport vehicle, and the loose cable saddle is fixed to the fixing frame using multiple screws. When the crane hoists the loose cable saddle, the screws are removed first and then the loose cable saddle is hoisted, which affects the transportation and hoisting speed of the loose cable saddle. In addition, when the loose-cable saddle is hoisted by a crane and installed in the guide tunnel, since the loose-cable saddle is installed at an angle and there is no loose-cable saddle installation support structure in the guide tunnel, the entire installation process requires manual support, which brings inconvenience to the construction. Summary of the invention

[0003] In view of this, the present invention aims to provide a long guide tunnel large-angle loose cable saddle installation device to facilitate the transportation, lifting and installation of the loose cable saddle.

[0004] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0005] A device for installing a loose cable saddle with a long guide tunnel and a large inclination angle comprises a transport vehicle and a lifting gantry arranged at the installation position of the loose cable saddle in the guide tunnel, a lifting pulley is arranged on the lifting gantry, two tracks are laid in the guide tunnel, the two tracks extend into the lifting gantry, the width of the two tracks is greater than the width of the loose cable saddle, the center line of the two tracks and the center line of the loose cable saddle are located in the same vertical plane, the transport vehicle is located on the two tracks, and a winch is arranged at the entrance of the guide tunnel for towing the transport vehicle;

[0006] A first support frame is arranged at the front end of the transport vehicle upward and obliquely toward the rear end of the transport vehicle, and the cable saddle on the transport vehicle relies on the first support frame, and the cable saddle and the body of the transport vehicle are perpendicular.

[0007] Furthermore, a second support frame is arranged at the rear end of the transport vehicle upward and obliquely toward the front end of the transport vehicle, a socket is formed between the second support frame and the first support frame, the loose cable saddle is inserted between the second support frame and the first support frame, and the second support frame and the second support frame abut against the front and rear end surfaces of the loose cable saddle to support the loose cable saddle.

[0008] Furthermore, the second support frame and the first support frame are respectively frame structures.

[0009] Furthermore, the left and right ends of the transport vehicle are symmetrically provided with limiting guardrails, and the distance between the left and right limiting guardrails corresponds to the width of the installation end of the loose cable saddle.

[0010] Furthermore, it also includes a third support frame arranged at the saddle installation position, the third support frame is upward and obliquely toward the guide tunnel entrance, the third support frame can be detachably installed on the guide tunnel foundation, or the third support frame can be movably installed on two tracks.

[0011] Furthermore, the third support frame is two oblique support rod structures arranged side by side.

[0012] Furthermore, the lifting equipment corresponding to the lifting pulley includes a fixed frame connected to the lifting end of the wire rope of the lifting pulley, four lifting rods arranged on the fixed frame, and lifting shackles respectively arranged on the four lifting rods.

[0013] Compared with the prior art, the long guide tunnel large-angle scattered cable saddle installation device described in the present invention has the following advantages:

[0014] (1) In the present invention, the first support frame and the second transport frame form a V-shaped support structure with an opening toward the transport vehicle, into which the loose cable saddle is inserted. The first support frame and the second transport frame support the loose cable saddle to prevent the loose cable saddle from tipping over toward the front or rear end of the transport vehicle, thereby improving the convenience of transporting and lifting the loose cable saddle.

[0015] (2) In the present invention, two limiting guardrails limit the position of the loose cable saddle, thereby improving the lifting position accuracy of the loose cable saddle

[0016] (3) In the present invention, the third support frame temporarily supports the loose-cable saddle hoisted to the installation position, thereby facilitating the installation of the loose-cable saddle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 It is a schematic diagram of a long guide tunnel large-angle loose cable saddle installation device according to an embodiment of the present invention;

[0019] Figure 2 for Figure 1 AA view;

[0020] Figure 3 for Figure 1 BB View

[0021] Description of reference numerals:

[0022] 1-loose saddle; 2-lifting shackle; 3-lifting rod; 4-fixed frame; 5-lifting pulley; 6-lifting gantry; 8-diagonal brace; 13-limiting guardrail; 14-first supporting frame; 15-track; 16-transport vehicle; 17-second supporting frame; 18-third supporting frame. DETAILED DESCRIPTION

[0023] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0024] like Figure 1 , Figure 2 and Figure 3 As shown, a long guide tunnel with a large inclination angle loose cable saddle installation device includes two rails 15 laid in the guide tunnel, and a lifting gantry 6 arranged at the loose cable saddle installation position of the guide tunnel, the two rails 15 extend into the lifting gantry 6, the width of the two rails 15 is greater than the width of the loose cable saddle 1, the center line of the two rails 15 and the center line of the loose cable saddle in the guide tunnel are located in the same vertical plane, a transport vehicle 16 for transporting the loose cable saddle 1 is provided on the two rails 15, and a winch is provided at the entrance of the guide tunnel for towing the transport vehicle 16.

[0025] The lifting gantry 6 is welded from profiles, and a lifting pulley 5 is arranged on the gantry 6, and the center lines of the lifting pulley 5 and the loose cable saddle are located in the same vertical plane. In the present invention, diagonal braces 8 are respectively arranged on the left and right side frames of the lifting gantry 6 to improve the strength of the lifting gantry 6. In order to increase the stroke of the lifting pulley 5, the lifting gantry 6 is not arranged vertically to the ground, but is arranged at an angle relative to the ground, so that the top surface of the lifting gantry 6 is inclined, so that the lifting pulley 5 does not move horizontally, but forms an angle between its moving direction and the horizontal plane. The lifting device arranged for the lifting pulley 5 corresponding to the loose cable saddle 1 includes a fixed frame 4 connected to the wire rope hoisting end of the lifting pulley 5, and four hanging rods 3 arranged on the fixed frame 4, and a lifting shackle 2 is respectively arranged on the four hanging rods 3, and the loose cable saddle 1 is hoisted by the four lifting shackles 2 to improve the hoisting stability of the loose cable saddle 1.

[0026] A first support frame 14 is arranged at the front end of the transport vehicle 16 (the end facing the bottom of the guide tunnel) upward and obliquely toward the rear end of the transport vehicle (the end facing the entrance of the guide tunnel), and a second support frame 17 is arranged at the rear end of the transport vehicle 16 upward and obliquely toward the front end of the transport vehicle. The second support frame 17 and the first support frame 14 are preferably frame structures. A socket is formed between the second support frame 17 and the first support frame 14. When transporting the loose cable saddle 1, the loose cable saddle 1 is inserted from its lower part between the second support frame 17 and the first support frame 14, the loose cable saddle 1 and the body of the transport vehicle 16 are vertical, the second support frame 17 and the first support frame 14 abut against the front and rear end surfaces of the loose cable saddle 1, support the loose cable saddle 1, and support and restrict the loose cable saddle 1, wherein the first support frame 14 prevents the loose cable saddle 1 from tipping forward, and the second support frame 17 prevents the loose cable saddle 1 from tipping backward. Since the loose cable saddle 1 is inserted between the second support frame 17 and the first support frame 14 and supported by the second support frame 17 and the first support frame 14, it is convenient to place and lift the loose cable saddle. Preferably, limit guardrails 13 are symmetrically provided at the left and right ends of the transport vehicle 16, and the distance between the left and right limit guardrails 13 corresponds to the width of the installation end of the loose cable saddle (the distance between the left and right ends of the bottom when the loose cable saddle is viewed from the front), ensuring that the center line of the loose cable saddle 1 and the center line of the lifting pulley are located in the same vertical plane after insertion, which is convenient for lifting and installation of the lifting pulley.

[0027] In the present invention, a third support frame 18 is further provided at the cable saddle installation position in the guide tunnel, and the third support frame 18 is preferably a structure of two oblique braces arranged side by side. The third support frame 18 is upward and obliquely directed toward the guide tunnel entrance, and the third support frame 18 can be detachably installed on the guide tunnel foundation, or the third support frame 18 can be movably installed on the two rails 15, such as the third support frame 18 and the rail are slidably connected, and a hydraulic cylinder or a jack is provided on the corresponding third support frame 18 to realize that the third support frame 18 moves along the rail 15 to the cable saddle installation support position and supports the cable saddle. When installing the cable saddle, the third support frame 18 can be moved to the corresponding position, and after the lifting pulley 5 hoists the cable saddle 1 to the installation position, the cable saddle 1 is dropped to the installation position, and the third support frame 18 is used to temporarily support the cable saddle. The support principle is the same as that of the first support frame 14 supporting the cable saddle, which saves the operation of manually supporting the cable saddle and facilitates the installation and construction of the cable saddle.

[0028] In the present invention, the loose cable saddle is transported by a transport vehicle and lifted by a lifting pulley on a lifting gantry, thereby achieving a maximum oblique transport angle of 25°, a maximum inclined installation angle of 40°, a maximum transport length of 63m, a maximum oblique transport weight of 160t, and the installation of the loose cable saddle in a long guide tunnel, a narrow space, and a large inclination angle.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A long guide tunnel with large inclination angle cable saddle installation device, characterized in that: It comprises a transport vehicle (16) and a lifting gantry (6) arranged at the installation position of the loose cable saddle in the guide tunnel, a lifting pulley (5) is arranged on the lifting gantry (6), and the lifting pulley (5) is provided with a lifting device for lifting the loose cable saddle (1), two tracks (15) are laid in the guide tunnel, the two tracks (15) extend into the lifting gantry (6), the width of the two tracks (15) is greater than the width of the loose cable saddle (1), the center line of the two tracks (15) and the center line of the loose cable saddle are located in the same vertical plane, the transport vehicle (16) is located on the two tracks (15), and a winch is arranged at the entrance of the guide tunnel for towing the transport vehicle (16); A first support frame (14) is arranged at the front end of the transport vehicle (16) upward and obliquely toward the rear end of the transport vehicle, a cable saddle (1) on the transport vehicle (16) relies on the first support frame (14), and the cable saddle (1) and the body of the transport vehicle (16) are perpendicular.

2. A long guide tunnel large-angle cable saddle installation device according to claim 1, characterized in that: A second support frame (17) is arranged at the rear end of the transport vehicle (16) upward and obliquely toward the front end of the transport vehicle, and a socket is formed between the second support frame (17) and the first support frame (14). The loose cable saddle (1) is inserted between the second support frame (17) and the first support frame (14), and the second support frame (17) and the second support frame (14) abut against the front and rear end surfaces of the loose cable saddle (1) to support the loose cable saddle (1).

3. A long guide tunnel large-angle cable saddle installation device according to claim 2, characterized in that: The second support frame (17) and the first support frame (14) are respectively frame structures.

4. A long guide tunnel large-angle cable saddle installation device according to claim 2, characterized in that: The left and right ends of the transport vehicle (16) are symmetrically provided with limiting guardrails (13), and the distance between the left and right limiting guardrails (13) corresponds to the width of the installation end of the loose cable saddle (1).

5. The long guide tunnel large-angle cable saddle installation device according to claim 1, characterized in that: It also includes a third support frame (18) arranged at the saddle installation position, the third support frame (18) is upward and obliquely directed toward the guide tunnel entrance, the third support frame (18) can be detachably installed on the guide tunnel foundation, or the third support frame (18) can be movably installed on the two rails (15).

6. A long guide tunnel large-angle cable saddle installation device according to claim 5, characterized in that: The third support frame (18) is a structure of two diagonal braces arranged side by side.

7. The long guide tunnel large-angle cable saddle installation device according to claim 1, characterized in that: The lifting device corresponding to the lifting pulley (5) comprises a fixing frame (4) connected to the lifting end of the wire rope of the lifting pulley (5), four lifting rods (3) arranged on the fixing frame (4), and lifting shackles (2) respectively arranged on the four lifting rods (3).

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