Tunnel cable lifting device and lifting method

Abstract

The invention discloses a tunnel cable lifting device, and relates to the field of tunnel cable installation, and the tunnel cable lifting device comprises a frame; the rolling wheels are detachably connected with the frame and can rotate relative to the frame; and a first accommodating space is formed between the frame and the roller and is used for accommodating a cable. Through the combination of the frame and the rollers, when the device is used for hoisting a tunnel cable, the labor intensity is reduced, the labor cost and the time cost are reduced, and the construction safety is improved.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel cable installation, in particular to a tunnel cable lifting device. Background Art

[0002] During cable operation, it is easy for the cable to detach from the bracket. The cable is suspended for a long time, and the suspended section gradually falls over time, which will cause the local stress on both sides of the suspended section of the cable to increase sharply under the support of the bracket, thereby causing local deformation of the cable, affecting the insulation performance of the cable, and possibly causing the cable body to break down. Therefore, when the cable detaches from the bracket, it should be restored as soon as possible. For newly built tunnels, the cable is usually laid on the tunnel ground in the initial state. After the cable bridge is installed, the cable needs to be lifted from the ground to the bridge. In view of the large diameter, heavy weight and strict standards of tunnel cables, during the cable installation process, it is necessary to ensure that the cable is easily lifted and avoid external damage to the cable. This requires high skills and equipment for construction personnel.

[0003] Generally, cables are often put on the rack by shoulder or crowbar. Due to uneven manual force, it is easy to cause collision between the cable and the sharp end of the newly installed bracket, causing damage to the cable sheath. In addition, if the cable hanging section is too long, a large number of people are required to work together. If the cooperation between the personnel is not enough, it is easy for the cable to fail to be put on the bracket and fall again, and even cause mechanical shock, injury or even death to the personnel. Therefore, it is of great practical significance and value to explore how to use mechanical equipment to replace manual operation and release a large number of labor. Summary of the invention

[0004] In view of the above problems existing in the prior art, the present invention is proposed.

[0005] Therefore, the problem to be solved by the present invention is how to efficiently and safely lift the tunnel cable.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: a tunnel cable lifting device, comprising a frame; and a roller, which is detachably connected to the frame and can rotate relative to the frame; a first accommodating space is provided between the frame and the roller for placing the cable.

[0007] As a preferred solution of the tunnel cable lifting device of the present invention, the roller is shaped like a cylinder whose diameter gradually increases from the middle to both ends; the interior of the roller has a second accommodating space running through both ends thereof, in which a rotating shaft can be placed.

[0008] As a preferred solution of the tunnel cable lifting device described in the present invention, the frame is shaped like a "door", having a horizontal arm and two parallel vertical arms; the end of the vertical arm is hook-shaped, having a third accommodating space for placing the rotating shaft.

[0009] As a preferred solution of the tunnel cable lifting device of the present invention, the frame is in a "C" shape, having a curved arm and a supporting arm; the supporting arm is a cylinder and can be placed in the second accommodating space.

[0010] As a preferred solution of the tunnel cable lifting device of the present invention, it also includes a lifting component, and the lifting component is used to lift the frame.

[0011] As a preferred solution of the tunnel cable lifting device described in the present invention, the lifting assembly includes a base, a column, a boom and a winch, the column is fixedly arranged in the middle of the base, the boom is arranged on the top of the column, and the free end of the sling on the winch is detachably connected to the frame.

[0012] As a preferred solution of the tunnel cable lifting device of the present invention, the boom is a telescopic boom and its angle relative to the column is adjustable.

[0013] As a preferred solution of the tunnel cable lifting device of the present invention, a first slot is also provided on the frame.

[0014] As a preferred solution of the tunnel cable lifting device of the present invention, a plurality of second slots are evenly arranged on the surface of the column along its length direction.

[0015] As a preferred solution of the tunnel cable lifting device of the present invention, it also includes a limit rod, and the two ends of the limit rod can be respectively inserted into the first slot and the second slot to keep the relative position of the frame and the column unchanged.

[0016] The beneficial effects of the present invention are as follows: the present invention reduces labor intensity, labor costs and time costs, and improves construction safety when the device is lifting tunnel cables through the combination of the frame and the roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 This is a structural diagram of the frame and roller described in Example 1.

[0019] Figure 2 This is a structural diagram of the framework described in Example 1.

[0020] Figure 3 This is a schematic diagram of the coordination of the frame and the roller described in Example 1.

[0021] Figure 4 This is a cross-sectional view of the roller described in Example 1.

[0022] Figure 5 This is a schematic diagram of the application of the device in scenario 1 described in Example 1.

[0023] Figure 6 This is a schematic diagram of the application of the device in scenario 2 described in Example 1.

[0024] Figure 7 This is a structural diagram of the frame and roller described in Example 2.

[0025] Figure 8 This is a structural diagram of the lifting assembly described in Example 3.

[0026] Fig. 9 This is a structural diagram of the frame and roller described in Example 4.

[0027] Fig.10 This is a schematic diagram of the coordination between the frame and the column regarding the limiting rod in Example 4.

[0028] Fig.11 This is a structural diagram of the frame and roller described in Example 5.

[0029] Fig.12 This is a schematic diagram of the device in Example 6 when laying the lower support. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it an embodiment that is mutually exclusive with other embodiments, either individually or selectively.

[0033] Example 1

[0034] Reference Figure 1 to Figure 4 , which is the first embodiment of the present invention, provides a tunnel cable lifting device, which includes a frame 100, a roller 200 and a lifting assembly 300.

[0035] Specifically, refer to Figure 2 The frame 100 is in the shape of a "door", and has a horizontal arm and two parallel vertical arms. The top ends of the two vertical arms are fixedly connected to the two ends of the horizontal arm respectively, and can also be made in one piece. The bottom ends of the two vertical arms are hook-shaped, and the space formed by the hook is the third accommodating space S, which is used to place the rotating shaft 201 of the roller 200.

[0036] The shape of the roller 200 is a cylinder whose diameter gradually increases from the middle to both ends, and the diameter changes in a curve. The tunnel cable can be supported on the concave part of the roller 200. The rounded curve of this part can avoid damage to the tunnel cable due to stress concentration during the lifting process.

[0037] Reference Figure 4 The roller 200 also has a second accommodating space N that runs through both ends thereof, and the second accommodating space N can accommodate the rotating shaft 201. It should be noted that when the rotating shaft 201 is installed in the second accommodating space N, a corresponding bearing needs to be installed.

[0038] The roller 200 with the shaft 201 is installed at the bottom of the frame 100, that is, both ends of the shaft 201 can be stuck in the third accommodation space S at the bottom of the vertical arm of the frame 100. At this time, a first accommodation space M is formed between the roller 200 and the frame 100, and the first accommodation space M is used to place the cable when lifting the cable.

[0039] The roller 200 can rotate at the bottom of the frame 100. When lifting, the shaft 201 will also be trapped in the third accommodation space S at the bottom of the frame 100, so that the roller 200 will not fall off. When the roller 200 needs to be removed, it is only necessary to apply an upward force to disengage the shaft 201 of the roller 200 from the opening of the third accommodation space S.

[0040] A lifting lug 102 is also provided on the top of the frame 100 for connecting with the sling of the lifting assembly 300. The lifting assembly 300 can be a common lifting equipment such as a small crane, which is not limited in this embodiment. The working principle of the device is described below by using a scenario:

[0041] Scenario 1: In a tunnel where cables have been laid, the cables are detached from the bracket, causing the cables to be partially suspended and need to be restored:

[0042] Reference Figure 5 , move the device to the position where the cable is suspended, so that the frame 100 and the roller 200 are directly above the tunnel cable, then remove the roller 200 from the frame 100, and then operate the lifting assembly 300 to start lowering the frame 100 until the tunnel cable is in the frame 100 (step ①), and then reinstall the roller 200 on the frame 100 (step ②), so that the tunnel cable is in the closed first accommodating space M, and finally operate the lifting assembly 300 to start hanging the cable (step ③) until the cable bracket is in the designated position.

[0043] Scenario 2: When laying cables in a newly built tunnel, the cables need to be laid from the beginning:

[0044] Reference Figure 6 , the position of the tunnel cable near its end is placed in the first accommodation space M between the frame 100 and the roller 200. The placement method can adopt the method of separating and reassembling the frame 100 and the roller 200 in the first scenario, or the method of directly passing the head of the tunnel cable through the first accommodation space M.

[0045] Then, the end portion of the tunnel cable is hoisted, and after the end cable is hoisted onto the tunnel end bracket, the frame 100 and the roller 200 are moved along the cable until the cable under the next cable bracket node, and then hoisted again to complete the cable racking operation of this node. Similarly, after completing the cable racking operation of a node, the operation of the next node can be directly continued without disassembling the frame 100 and the roller 200. The roller 200 can rotate to facilitate the movement of the frame 100 along the cable.

[0046] Compared with the grabbing and lifting devices similar to hooks, which require repeated grabbing and releasing operations at different nodes of the cable, the combination of the roller 200 and the frame 100 of the present invention does not require this. After completing the cable mounting operation at one location, it is only necessary to move the roller 200 and the frame 100 along the cable path to the next cable lifting location, without the need to disassemble and assemble the roller 200 and the frame 100 multiple times. In addition, during the movement of the roller 200 and the frame 100, the cables laid on the ground can also be pried up, which also eliminates the need for the traditional hook to manually pry up the cables at the new lifting location, thereby reducing labor intensity and improving construction safety.

[0047] Example 2

[0048] Reference Figure 7 , which is the second embodiment of the present invention, and this embodiment is based on the previous embodiment. Different from the first embodiment, in this embodiment, the frame 100 is in the shape of a "C", and has a bending arm and a supporting arm. The bottom end of the bending arm is fixedly connected to one end of the supporting arm, and the two can also be made in one piece. The supporting arm is a cylinder, which can pass through the second accommodating space N of the roller 200 and serve as the rotation axis of the roller 200.

[0049] At this time, the first accommodating space M formed between the frame 100 and the roller 200 becomes a space with an opening on one side, and the tunnel cable can be placed into the first accommodating space M from the opening. The working principle is the same as the two scenarios described in Example 1. The roller 200 can rotate to avoid hard friction when moving along the cable, thereby preventing possible damage to the cable.

[0050] The rest of the structure is the same as that of Example 1.

[0051] Example 3

[0052] Reference Figure 8 , which is the third embodiment of the present invention, and is based on the first two embodiments. This embodiment provides a lifting assembly 300.

[0053] Specifically, the lifting assembly 300 includes a base 301 , a column 302 , a boom 303 and a winch 304 .

[0054] Preferably, the base 301 includes a base 301a and support arms 301b arranged around the base 301a, one end of the support arm 301b is provided with a moving wheel, and the other end is rotatably matched with the base 301a. It should be noted that the rotation is a one-way rotation, that is, the support arm 301b can only rotate downward, so when an upward force is applied to the base 301a to lift the base 301a, the four support arms 301b will naturally rotate downward and retract, which is convenient for storage.

[0055] Preferably, the arm 303 is a telescopic arm, that is, the arm 303 has at least two sections, and the surface of the arm 303 has an adjustment hole, and after extending to a specified position, a latch can be inserted to fix it. One end of the arm 303 is rotatably matched with the top of the column 302, and the angle can also be adjusted through the adjustment hole to adapt to different working environments.

[0056] The winch 304 may be manual or electric, have a speed reduction mechanism and be capable of automatic locking.

[0057] Example 4

[0058] Reference Fig. 9 and Fig.10 , which is the fourth embodiment of the present invention, and is based on Embodiment 1 and Embodiment 3.

[0059] Preferably, the frame 100 is further provided with a first slot 101 , and correspondingly, a plurality of second slots 302 a are evenly provided on the surface of the column 302 along its height direction, and the second slots 302 a have the same diameter as the first slots 101 .

[0060] A limiting rod 400 may be installed between the first slot 101 and the second slot 302a. Two ends of the limiting rod 400 may be inserted into the first slot 101 and the second slot 302a, respectively.

[0061] After the limit rod 400 is installed, the connection between the frame 100 and the column 302 becomes a rigid connection. In the second scenario described in Example 1, the connection between the frame 100 and the lifting assembly 300 is through a relatively flexible connection such as a sling. When the frame 100 and the roller 200 move along the cable, it is necessary to manually support the frame 100 to prevent the frame 100 from shaking. After the limit rod 400 is installed, the position of the frame 100 relative to the lifting assembly 300, that is, the column 302, is relatively fixed, so when the frame 100 needs to be moved, it is only necessary to move the lifting assembly 300, and there is no need to manually support the frame 100. The setting of a plurality of second slots 302a can adapt to different lifting heights.

[0062] Example 5

[0063] This embodiment is based on the second embodiment, but is different from the second embodiment in that the supporting arm at the bottom of the "C"-shaped frame 100 is retractable. Fig.11 The outer sleeve of the support arm is provided with a sliding sleeve 103, and the sliding sleeve 103 cooperates with the roller 200 through a bearing, that is, the roller 200 can rotate around the sliding sleeve 103. At the same time, the sliding sleeve 103 can also slide relative to the support arm, that is, the tube wheel 200 can move on the support arm.

[0064] Preferably, a plurality of limiting holes are evenly arranged on the support arm, and the hole walls are threaded. Bolts are arranged on the sliding sleeve 103, and the bolts can cooperate with the limiting holes to achieve the positioning of the sliding sleeve 103, such as Fig.11 .

[0065] Example 6

[0066] This embodiment is based on all the above embodiments. This embodiment provides a tunnel cable lifting method, which includes:

[0067] S1: placing the cable in the first accommodation space M between the frame 100 and the roller 200 .

[0068] First, for tunnels where cables have been laid, when local cables fall off the brackets and need to be re-mounted:

[0069] When the technical solution in Example 1 is adopted, the device is moved to a position where the cable is suspended, so that the frame 100 and the roller 200 are directly above the tunnel cable, and then the roller 200 is removed from the frame 100, and then the lifting assembly 300 is operated to start lowering the frame 100 until the tunnel cable is in the frame 100 (step ①), and then the roller 200 is reinstalled on the frame 100 (step ②), so that the tunnel cable is in the closed first accommodating space M, as shown in FIG. Figure 5 .

[0070] When the technical solutions of Embodiment 2 and Embodiment 5 are adopted, the cable can be directly placed into the first accommodating space M from the side of the frame 100 .

[0071] Secondly, for newly built tunnels that have not yet laid cables, when laying cables from scratch is required:

[0072] When the technical solution in Embodiment 1 is adopted, the frame 100 and the roller 200 can be separated as described above, the cable is placed in the first accommodation space M, and then the frame 100 and the roller 200 are combined together. Alternatively, the frame 100 and the roller 200 are not separated, and the end of the cable is passed directly through the first accommodation space M.

[0073] S2: Hang the frame 100 to place the cables on the cable support.

[0074] First, when a local cable falls off a bracket and needs to be re-mounted in a tunnel where cables have been laid, the frame 100 is directly lifted upward, and the frame 100 and the roller 200 move upward with the cable until the cable is placed on the bracket.

[0075] Secondly, for a newly built tunnel where cables have not been laid yet, when laying cables from the beginning is required, after the cable ends are fixed to the frame 100 and the roller 200, the frame 100 is lifted upwards, and after the cable ends are placed on the first bracket and fixed, the frame 100 and the roller 200 are moved horizontally along the length direction of the subsequent cables, forcing the subsequent cables to move upwards one by one and be placed on the brackets in sequence. Figure 6 .

[0076] It should be noted that for relatively light cables, the frame 100 and the roller 200 can be directly moved horizontally. For relatively heavy cables, they can first be moved downward along the angle of the cable, and when they are under the next bracket, the frame 100 and the roller 200 can be lifted upward. However, no matter what kind of cable, the frame 100 and the roller 200 only need to be moved along the cable without separation and reassembly.

[0077] Part 3: In reality, there are several rows of cable supports on the same side of the tunnel. The above operation steps can be smoothly implemented for the top layer of cable supports, but for the lower supports, they will be blocked by the top supports, and the slings will be blocked. For the re-laying situation, the frame 100 and the roller 200 cannot move along the length direction of the cable. Considering this, the frame 100 and the roller 200 can adopt the technical solution of Example 5, that is, the roller 200 can move left and right.

[0078] Therefore, when laying the lower support, the roller 200 can be moved outward so that the cable and the sling are staggered. Fig.12 , and insert the two ends of the limiting rod 400 into the first slot 101 on the frame 100 and the second slot 302a on the column 302 respectively, so that the frame 100 and the lifting assembly 300 form a rigid connection, and the relative position remains unchanged. In this way, the lifting assembly 300 can be directly pushed to move with the frame 100 and the roller 200, which is simple and convenient.

[0079] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A tunnel cable lifting device, characterized in that: include, a frame (100); and, A roller (200) which is detachably connected to the frame (100) and is capable of rotating relative to the frame (100); A first accommodating space (M) is provided between the frame (100) and the roller (200) for accommodating cables.

2. The tunnel cable lifting device according to claim 1, characterized in that: The roller (200) is in the shape of a cylinder whose diameter gradually increases from the middle to both ends; the roller (200) has a second accommodation space (N) inside that runs through both ends thereof and can accommodate a rotating shaft (201).

3. The tunnel cable lifting device according to claim 2, characterized in that: The frame (100) is in the shape of a "door", and has a horizontal arm and two parallel vertical arms; the ends of the vertical arms are hook-shaped and have a third accommodation space (S) for placing the rotating shaft (201).

4. The tunnel cable lifting device according to claim 2 or 3, characterized in that: The frame (100) is in a "C" shape and has a bending arm and a supporting arm; the supporting arm is a cylinder and can be placed in the second accommodating space (N).

5. The tunnel cable lifting device according to claim 4, characterized in that: The lifting assembly (300) includes a base (301), a column (302), a boom (303) and a winch (304), wherein the column (302) is fixedly arranged at the middle of the base (301), the boom (303) is arranged at the top of the column (302), and the free end of the sling on the winch (304) is detachably connected to the frame (100).

6. The tunnel cable lifting device according to claim 5, characterized in that: The boom (303) is a telescopic boom and its angle relative to the column (302) is adjustable; a first slot (101) is also provided on the frame (100); and a plurality of second slots (302a) are evenly provided on the surface of the column (302) along its length direction.

7. The tunnel cable lifting device according to claim 6, characterized in that: It also includes a limiting rod (400), the two ends of which can be respectively inserted into the first slot (101) and the second slot (302a), so that the relative position of the frame (100) and the column (302) remains unchanged.

8. A method for lifting a tunnel cable, characterized in that: Applicable to the tunnel cable lifting device as claimed in claim 7, the lifting method comprises: Placing the cable in a first accommodation space (M) between the frame (100) and the roller (200); Hanging the frame (100) so that local cables are placed on the cable support; Hanging the frame (100) so that the end of the cable is placed on the first cable support; Move along the length of the cable to place the cable on subsequent cable supports.

9. The method for lifting a tunnel cable according to claim 8, characterized in that: The frame (100) is in a "C" shape and has a bending arm and a supporting arm. The supporting arm is provided with a sliding tube sleeve (103) that can slide with the supporting arm. The sliding tube sleeve (103) is rotationally matched with the roller (200).

10. The method for lifting a tunnel cable according to claim 9, characterized in that: The frame (100) is also provided with a first slot (101), and when one end of the limiting rod (400) cooperates with the first slot (101) and the other end cooperates with the lifting assembly (300), the relative position of the frame (100) and the lifting assembly (300) remains unchanged.

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