Deeply-buried tunnel anchor cable saddle mounting equipment and method

Abstract

The invention provides deep-buried tunnel anchor splay cable saddle installation equipment and method.The deep-buried tunnel anchor splay cable saddle installation equipment comprises a conveying winch, a cable saddle conveying trolley, a splay cable saddle conveying rail and a conveying trolley limiting frame, the conveying winch is connected with the cable saddle conveying trolley, and the splay cable saddle conveying rail is arranged on a main cable passing section in a hole; the main cable passing section is located between the tunnel anchor chamber and the tunnel type anchorage hole, the transport trolley limiting frame is arranged on the splay cable saddle foundation, and the splay cable saddle foundation is arranged at the front end of the main cable passing section. Power is provided through the conveying winch, so that the cable saddle conveying trolley can move towards the splay cable saddle foundation in a hole along the cable saddle conveying rail, and the splay cable saddle can be conveyed under the condition that the tunnel anchor space is limited; and the splay cable saddle is accurately adjusted through a vertical jack and a longitudinal jack on the cable saddle conveying trolley, so that the splay cable saddle is aligned with the mounting position, and mounting is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of loose cable saddle installation, and in particular relates to a device and a method for installing a deep-buried tunnel anchor loose cable saddle. Background Art

[0002] During the design and construction of anchorages for suspension bridges in mountainous areas, due to the restrictions of terrain conditions, they are usually designed as tunnel anchorages with smaller volumes. Tunnel anchorages need to be set in rock layers with better surrounding rock grade conditions. When the surface surrounding rock grade is poor, the tunnel anchors are designed to be deeply buried. This type of tunnel anchor chamber is located deep underground. There is a long tunnel-shaped guide tunnel (main cable passage section) between the anchor chamber and the tunnel anchor hole. The installation position of the loose cable saddle is tens of meters or even hundreds of meters away from the surface. The loose cable saddle is a large steel component with large size and weight usually exceeding 100t. In this case, it is installed in a closed and narrow space underground. The construction site is extremely limited, and large construction equipment cannot enter for construction. When installing the loose cable saddle, the loose cable saddle must first be transported to the installation position in the hole, and then the loose cable saddle in the hole is installed. The construction process is complicated and difficult.

[0003] Patent CN201910342289.8 discloses a loose cable saddle gantry system for ultra-large-angle narrow-space tunnel anchors and its installation method. The system includes a portal gantry and a traction system; the installation method includes the following steps: (1) installation of the portal gantry; (2) layout of the traction system; (3) hoisting of the gantry rods. Since the length of a general tunnel anchor is relatively short, the loose cable saddle is set at the entrance of the tunnel anchor, and can be directly installed by a crane without a gantry. However, for a longer tunnel anchor, the above method will not meet the construction requirements, and a gantry must be set to assist in the installation of the loose cable saddle. The method of the present invention is mainly aimed at installing a loose cable saddle gantry inside an ultra-large-angle tunnel anchor; the internal space of the tunnel anchor is narrow, the hoisting is difficult, and the safety risk is high. The use of this solution to install the loose cable saddle gantry inside the tunnel anchor makes it more efficient and safer. However, the portal gantry and traction system are relatively complex, and need to be installed in the early stage and removed in the later stage. In addition, the precise position of the loose cable saddle during the installation process is inconvenient to operate and needs to be adjusted repeatedly. Summary of the invention

[0004] The purpose of the present invention is to provide a deep-buried tunnel anchor loose cable saddle installation device, which can transport and install the loose cable saddle when the tunnel anchor space is limited, and solve the technical problem of tunnel anchor loose cable saddle installation.

[0005] Another object of the present invention is to provide a method for installing a deep-buried tunnel anchor saddle with high construction efficiency.

[0006] To this end, the technical solution provided by the present invention is as follows: A deep-buried tunnel anchor loose cable saddle installation device, comprising a conveying winch, a cable saddle transport trolley, a loose cable saddle transport track and a transport trolley limit frame, wherein the conveying winch is connected to the cable saddle transport trolley, the loose cable saddle transport track is arranged on the main cable passing section in the tunnel, the main cable passing section is located between the tunnel anchor room and the tunnel anchor hole, the transport trolley limit frame is arranged on the loose cable saddle foundation, and the loose cable saddle foundation is arranged at the front end of the main cable passing section; The conveying winch is used to pull the cable saddle transport trolley to move along the loose cable saddle transport track, and the transport trolley limit frame is used to position the cable saddle transport trolley. A steering pulley block is installed on the saddle transport trolley, and the steel wire rope on the conveying winch is connected to the steering pulley block.

[0007] The cable saddle transport trolley comprises a frame, wheels and a jack. The lower end of the frame is provided with wheels, the upper part of the frame is provided with an upper frame, the upper frame is used to place the cable saddle, and the jack is arranged on the frame.

[0008] The upper frame and the base plate, support and saddle body of the cable saddle are pin-connected or bolt-connected.

[0009] The jacks include a vertical jack and a longitudinal jack, wherein the vertical jacks are three-way jacks and at least four of them are arranged respectively at the four corners of the upper frame; The longitudinal jacks are one-way jacks and there are at least two of them, both of which are arranged at the rear of the saddle transport trolley.

[0010] A method for installing a deep-buried tunnel anchor saddle, using a deep-buried tunnel anchor saddle installation device, comprises the following steps: Step 1) The transport vehicle transports the base plate, support and saddle body of the loose cable saddle to the tunnel anchor hole, unloads the vehicle with lifting equipment, and then hoists and installs it on the cable saddle transport trolley; Step 2) Start the conveying winch, and the cable saddle transport trolley moves along the cable saddle transport track toward the cable saddle foundation in the tunnel; Step 3) After the saddle transport trolley transports the saddle to the top of the installation position, roughly adjust the position of the saddle, and then fix the position of the saddle transport trolley; Step 4) Use the longitudinal jack and the vertical jack to accurately adjust the installation plane position of the cable saddle component; Step 5) Lower the height of the vertical jack to install the saddle component in place.

[0011] The lifting equipment in step 1) includes crawler crane, gantry crane and anchor gantry.

[0012] The specific process of roughly adjusting the position of the loose cable saddle in step 3) is as follows: place a hardwood wedge between the frame of the saddle transport trolley and the transport trolley limit frame, and use the hardwood wedge to roughly adjust the position of the saddle transport trolley so that the loose cable saddle is roughly aligned with the installation position.

[0013] In step 4), first use the longitudinal jack to adjust the plane position and plane angle so that the bolt holes of the cable saddle are aligned with the anchor bolts, and then use the vertical jack to adjust the height and vertical angle of the cable saddle so that the cable saddle is lowered into place along the bolt direction.

[0014] The beneficial effects of the present invention are: The deep-buried tunnel anchor loose cable saddle installation equipment provided by the present invention provides power through a conveying winch, so that the cable saddle transport trolley can move along the cable saddle transport track to the loose cable saddle foundation in the tunnel, thereby realizing the transportation of the loose cable saddle under the condition of limited tunnel anchor space; the vertical jack and the longitudinal jack on the cable saddle transport trolley are used to accurately adjust the loose cable saddle to align the loose cable saddle with the installation position to realize installation.

[0015] The invention has a safe structure, a small volume and high construction efficiency, and can transport and install the loose cable saddle when the tunnel anchor space is limited, thus solving the technical problem of installing the tunnel anchor loose cable saddle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the elevation layout of the tunnel anchorage; Figure 2 It is a elevational layout diagram of an embodiment of the present invention; Figure 3 It is an elevation view of one embodiment of the saddle transport trolley; Figure 4 It is a plan view of one embodiment of the saddle transport trolley; Figure 5 It is a side view of an embodiment of a saddle transport trolley; Figure 6 This is a schematic diagram of the position of the loose cable saddle body on the cable saddle transport trolley Figure 7 This is the position of the saddle body after installation.

[0017] In the figure: 1. Tunnel anchorage opening; 2. Main cable passing section; 3. Anchor chamber; 4. Anchor plug body; 5. Loose cable saddle foundation; 6. Base plate; 7. Loose cable saddle transportation track; 8. Track bracket; 9. Transport trolley limit frame; 10. Conveying winch; 11. Cable saddle transportation trolley; 12. Steering pulley block; 13. Wheel; 14. Frame; 15. Longitudinal jack; 16. Vertical jack; 17. Upper frame; 18. Saddle body; 19. Main cable; 20. Support. DETAILED DESCRIPTION

[0018] The following is an explanation of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0019] The exemplary embodiments of the present invention are now described with reference to the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to disclose the present invention in detail and completely and to fully convey the scope of the present invention to those skilled in the art. The terms used in the exemplary embodiments shown in the accompanying drawings are not intended to limit the present invention. In the accompanying drawings, the same units / elements are marked with the same reference numerals.

[0020] Unless otherwise specified, the terms (including technical terms) used herein have the commonly understood meanings to those skilled in the art. In addition, it is understood that the terms defined in commonly used dictionaries should be understood to have the same meanings as those in the context of the relevant fields, and should not be understood as idealized or overly formal meanings.

[0021] Example 1 This embodiment provides a deep-buried tunnel anchor saddle installation device, such as Figure 2 As shown, it includes a conveying winch 10, a cable saddle transport trolley 11, a loose cable saddle transport track 7 and a transport trolley limiting frame 9, the conveying winch 10 is connected to the cable saddle transport trolley 11, the loose cable saddle transport track 7 is arranged on the main cable passing section 2 in the tunnel, the main cable passing section 2 is located between the tunnel anchor room 3 and the tunnel anchor hole 1, the transport trolley limiting frame 9 is arranged on the loose cable saddle foundation 5, and the loose cable saddle foundation 5 is arranged at the front end of the main cable passing section 2; The conveying winch 10 is used to pull the cable saddle transport trolley 11 to move along the loose cable saddle transport track 7, and the transport trolley limiting frame 9 is used to position the cable saddle transport trolley 11. like Figure 1 As shown, the conventional tunnel anchorage includes the tunnel anchorage hole 1, the main cable passing section 2, the anchor chamber 3, the anchor plug body 4, the loose cable saddle foundation 5 and other main structures. The loose cable saddle transport track 7 is installed in the hole through the track bracket 8 (whether to be installed depends on the engineering situation), and the main cable 19 enters the anchor chamber 3 through the main cable passing section 2.

[0022] The present invention provides power through the conveying winch 10, so that the cable saddle transport trolley 11 can move along the cable saddle transport track to the loose cable saddle foundation 5 in the tunnel, thereby realizing the transportation and installation of the loose cable saddle under the condition of limited tunnel anchor space.

[0023] Example 2 On the basis of Example 1, this embodiment provides a deep-buried tunnel anchor saddle installation device, wherein a steering pulley block 12 is installed on the saddle transport trolley 11, and the steel wire rope on the conveying winch 10 is connected to the steering pulley block 12.

[0024] The saddle transport trolley 11 is connected to the steel wire rope of the conveying winch 10, or a steering pulley block 12 is installed on the saddle transport trolley 11, and the steering pulley block 12 is connected to the steel wire rope of the conveying winch 10 to increase the traction force of the steering winch.

[0025] Example 3 Based on Example 1, this embodiment provides a deep-buried tunnel anchor saddle installation device, such as Figure 3 As shown, the saddle transport trolley 11 includes a frame 14, wheels 13 and a jack. The wheel 13 is installed at the lower end of the frame 14, and an upper frame 17 is provided on the upper part of the frame 14. The upper frame 17 is used to place the loose saddle, and the jack is arranged on the frame 14.

[0026] The jack is used to adjust the horizontal position and vertical height of the saddle.

[0027] Example 4 On the basis of Example 1, this embodiment provides a deep-buried tunnel anchor loose cable saddle installation device, wherein the upper frame 17 and the base plate 6, the support 20, and the saddle body 18 of the loose cable saddle are pinned or bolted.

[0028] like Figure 5 As shown, the upper frame 17 is connected to the base plate 6, the support 20, and the saddle body 18 respectively according to different installation components, and a connection method that is easy to dismantle can be adopted, such as pin connection and bolt connection.

[0029] Example 5 Based on Example 1, this embodiment provides a deep-buried tunnel anchor saddle installation device, such as Figure 4 As shown, the jacks include a vertical jack 16 and a longitudinal jack 15. The vertical jack 16 is a three-way jack and at least four of them are arranged, respectively, at the four corners of the upper frame 17; The longitudinal jacks 15 are one-way jacks and there are at least two of them, both of which are arranged at the rear of the saddle transport trolley 11.

[0030] The vertical jack 16 can adjust the height, angle and plane position of the components and the upper frame 17. After the transport trolley moves to the installation position, the transport trolley has a large tilt angle and the vertical jack cannot be used to adjust the plane position. The longitudinal jack 15 plane position and plane angle are required, and the vertical jack 16 adjusts the vertical position and vertical angle.

[0031] Example 6 This embodiment provides a method for installing a deep-buried tunnel anchor saddle, comprising the following steps: Step 1) The transport vehicle transports the base plate 6, the support 20 and the saddle body 18 of the loose cable saddle to the tunnel anchor hole, unloads the vehicle with a lifting device, and then hoists and installs them on the cable saddle transport trolley 11; Step 2) starting the conveying winch 10, and the cable saddle transport trolley 11 moves along the cable saddle transport track 7 toward the cable saddle foundation 5 in the cave; Step 3) After the saddle transport trolley 11 transports the saddle to the top of the installation position, roughly adjust the position of the saddle, and then fix the position of the saddle transport trolley 11; Step 4) Use the longitudinal jack 15 and the vertical jack 16 to accurately adjust the installation plane position of the cable saddle component; Figure 6 As shown; Step 5) Lower the height of the vertical jack 16 to install the saddle component in place. Figure 7 shown.

[0032] The lifting equipment in step 1) includes crawler crane, gantry crane and anchor gantry.

[0033] Example 7 On the basis of Example 6, this embodiment provides a method for installing a deep-buried tunnel anchor loose cable saddle. The specific process of roughly adjusting the position of the loose cable saddle in step 3) is as follows: place a hardwood wedge between the frame 14 of the saddle transport trolley 11 and the transport trolley limit frame 9, and use the hardwood wedge to roughly adjust the position of the saddle transport trolley 11 so that the loose cable saddle is roughly aligned with the installation position.

[0034] In step 4), firstly use the longitudinal jack 15 to adjust the plane position and plane angle so that the bolt hole of the cable saddle is aligned with the anchor bolt, and then use the vertical jack 16 to adjust the height and vertical angle of the cable saddle so that the cable saddle is lowered into place along the bolt direction.

[0035] After the loose cable saddle is transported to the tunnel entrance, it is unloaded using the tunnel entrance gantry or crane and hoisted onto the cable saddle transport trolley 11; after the loose cable saddle is firmly connected to the cable saddle transport trolley 11, the brake of the conveying winch 10 is released, and the cable saddle transport trolley 11 transports the loose cable saddle to the installation position along the conveying track; a hardwood wedge is placed between the cable saddle transport trolley 11 and the transport trolley limit frame 9, and the position of the cable saddle transport trolley 11 is roughly adjusted by the hardwood wedge to ensure that the loose cable saddle is roughly aligned with the installation position.

[0036] Tighten the transport winch brake as a safety measure during the installation process; 4 three-way jacks for vertical adjustment and 2 one-way jacks for plane position adjustment are arranged on the saddle transport trolley 11. The 2 plane jacks adjust the angle of the loose cable saddle to ensure that the bolt holes of the loose cable saddle are aligned with the anchor bolts. The 4 vertical jacks lower the loose cable saddle into place along the bolt direction.

[0037] The above examples are merely illustrative of the present invention and do not constitute a limitation on the protection scope of the present invention. All designs that are the same or similar to the present invention fall within the protection scope of the present invention.

Claims

1. A deep buried tunnel anchor saddle installation device, characterized in that: It includes a conveying winch, a cable saddle transport trolley, a loose cable saddle transport track and a transport trolley limit frame, wherein the conveying winch is connected to the cable saddle transport trolley, the loose cable saddle transport track is arranged on the main cable passing section in the tunnel, the main cable passing section is located between the tunnel anchor room and the tunnel anchor hole, the transport trolley limit frame is arranged on the loose cable saddle foundation, and the loose cable saddle foundation is arranged at the front end of the main cable passing section; The conveying winch is used to pull the cable saddle transport trolley to move along the loose cable saddle transport track, and the transport trolley limit frame is used to position the cable saddle transport trolley.

2. The deep-buried tunnel anchor saddle installation device according to claim 1 is characterized by: A steering pulley block is installed on the saddle transport trolley, and the steel wire rope on the conveying winch is connected to the steering pulley block.

3. The deep-buried tunnel anchor saddle installation device according to claim 1 is characterized by: The cable saddle transport trolley comprises a frame, wheels and a jack. The lower end of the frame is provided with wheels, the upper part of the frame is provided with an upper frame, the upper frame is used to place the cable saddle, and the jack is arranged on the frame.

4. The deep-buried tunnel anchor saddle installation device according to claim 3 is characterized by: The upper frame and the base plate, support and saddle body of the cable saddle are pin-connected or bolt-connected.

5. The deep-buried tunnel anchor saddle installation device according to claim 3 is characterized by: The jacks include a vertical jack and a longitudinal jack, wherein the vertical jacks are three-way jacks and at least four of them are arranged respectively at the four corners of the upper frame; The longitudinal jacks are one-way jacks and there are at least two of them, both of which are arranged at the rear of the saddle transport trolley.

6. A method for installing a deep-buried tunnel anchor saddle, using the deep-buried tunnel anchor saddle installation device according to claim 5, characterized in that: The following steps are involved: Step 1) The transport vehicle transports the base plate, support and saddle body of the loose cable saddle to the tunnel anchor hole, unloads the vehicle with lifting equipment, and then hoists and installs it on the cable saddle transport trolley; Step 2) Start the conveying winch, and the cable saddle transport trolley moves along the cable saddle transport track toward the cable saddle foundation in the tunnel; Step 3) After the saddle transport trolley transports the saddle to the top of the installation position, roughly adjust the position of the saddle, and then fix the position of the saddle transport trolley; Step 4) Use the longitudinal jack and the vertical jack to accurately adjust the installation plane position of the cable saddle component; Step 5) Lower the height of the vertical jack to install the saddle component in place.

7. A method for installing a deep-buried tunnel anchor saddle according to claim 6, characterized in that: The lifting equipment in step 1) includes crawler crane, gantry crane and anchor gantry.

8. A method for installing a deep-buried tunnel anchor saddle according to claim 6, characterized in that: The specific process of roughly adjusting the position of the loose cable saddle in step 3) is as follows: place a hardwood wedge between the frame of the saddle transport trolley and the transport trolley limit frame, and use the hardwood wedge to roughly adjust the position of the saddle transport trolley so that the loose cable saddle is roughly aligned with the installation position.

9. A method for installing a deep-buried tunnel anchor saddle according to claim 6, characterized in that: In step 4), first use the longitudinal jack to adjust the plane position and plane angle so that the bolt holes of the cable saddle are aligned with the anchor bolts, and then use the vertical jack to adjust the height and vertical angle of the cable saddle so that the cable saddle is lowered into place along the bolt direction.

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