Duct piece back covering steel plate lifting and loading tool

Abstract

The utility model discloses a segment back covering steel plate lifting tool which comprises two lifting rods, sliding blocks are connected to the front side and the rear side of each lifting rod in a front-back sliding mode, a rotating rod is rotationally connected to the middle of each sliding block, the upper end of each rotating rod is connected with a rotating handle, and a limiting rod is fixed to the end portion of the lower end of each rotating rod. The clear distance between the top of the limiting rod and the bottom of the lifting rod is greater than the thickness of the back-coated steel plate; lifting handles are fixed at the front and rear ends of the lifting rod; by arranging the lifting rods, the sliding blocks, the rotating rods, the rotating handles and the limiting rods, when the back-coated steel plate is lifted and placed, the two lifting rods are placed on the left side and the right side of the back-coated steel plate, the rotating handles are rotated, the limiting rods are rotated to the bottom of the back-coated steel plate, and the limiting rods and the lifting rods can clamp the back-coated steel plate; and then a worker holds the lifting handle at the end part of the lifting rod by hand to lift the back-coated steel plate onto the reinforcement cage, the back-coated steel plate is welded on the reinforcement cage, and then the handle is rotated to loosen the back-coated steel plate, so that the influence and interference of the reinforcement cage on the hand are reduced, and the lifting is more labor-saving and convenient.

Description

Technical Field

[0001] This utility model belongs to the technical field of backing steel plate installation, and in particular relates to a lifting tool for the backing steel plate of tunnel segments. Background Technology

[0002] Segment construction refers to prefabricated, arc-shaped sheet-like components used for lining and support during the excavation process of a full-face tunnel boring machine (TBM). It can serve as a temporary support measure during TBM excavation or as a permanent support measure for the tunnel. During TBM excavation, there are supporting segment installation devices at the rear, allowing for the immediate installation of segments on the exposed rock face after excavation. In current production, the segments produced in conjunction with TBMs are tile-shaped, with the inner and outer surfaces of the internal supporting steel cage being arc-shaped. Arc-shaped backing steel plates are then welded onto these arcs to form a smooth arc surface, which is then prefabricated by concrete pouring.

[0003] During the segment fabrication process, the backing steel plate of the segment needs to be placed on the reinforcing cage for welding. When workers lift and place the backing steel plate, it is difficult for them to directly hold the backing steel plate by hand for lifting and positioning because the backing steel plate is curved and the reinforcing cage interferes with it. In order to facilitate the lifting and installation of the backing steel plate, a tool that is easy to lift and place needs to be designed. Utility Model Content

[0004] In view of the shortcomings and defects in the existing technology, the purpose of this utility model is to provide a lifting tool for the backing steel plate of the tunnel segment, which solves the problem of difficulty in holding and lifting the backing steel plate in the existing technology.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a lifting tool for a steel plate backing of a pipe segment, comprising two lifting rods, each lifting rod having a groove on both its front and rear sides, and a slider slidably connected to each groove. The slider is locked to the groove by a locking member. A rotating rod is rotatably connected to the middle of the slider. The upper end of the rotating rod extends out of the slider, and a rotating handle is connected to the upper end of the rotating rod. The lower end of the rotating rod extends out of the slider, and a limiting rod is fixed to the lower end of the rotating rod. The rotating handle, rotating rod, and limiting rod are arranged in a "Z" shape. The net distance between the top of the limiting rod and the bottom of the lifting rod is greater than the thickness of the backing steel plate. A lifting handle is fixed to both the front and rear ends of the lifting rod.

[0006] As a further improvement of this utility model, a lifting ring is fixed in the middle of each lifting rod, and two lifting rings are connected by a lifting chain. A ring buckle is fixed in the middle of the lifting chain, and hooks that can be hung on the lifting rings are fixed at both ends of the lifting chain.

[0007] As a further improvement of this utility model, the locking component includes two locking bolts. The lifting rod has multiple threaded holes on both sides of the slide groove, corresponding to the locking bolts from front to back. The slider has a limiting hole on both sides that corresponds to the threaded hole. The locking bolt is threadedly connected to the threaded hole, and the end of the locking bolt extends into the limiting hole.

[0008] As a further improvement of this utility model, the lifting handle is U-shaped.

[0009] As a further improvement of this utility model, an anti-slip layer is provided on the upper side of the limiting rod.

[0010] As a further improvement of this utility model, the lifting handle is covered with soft rubber.

[0011] Compared with the prior art, this utility model has the following advantages:

[0012] 1. By setting two lifting rods, each with a groove at both ends, a slider slides on the groove, and a rotating rod rotatably connected to the slider, with a rotating handle connected to the upper end of the rotating rod and a limiting rod connected to the bottom end, the net distance between the top of the limiting rod and the bottom of the lifting rod is greater than the thickness of the backing steel plate. Therefore, when lifting and placing the backing steel plate, the two lifting rods are placed on the left and right sides of the backing steel plate. Then, the distance between the two sliders is adjusted according to the width of the backing steel plate, and the sliders are locked in the groove with locking devices. Then, the rotating handle is rotated so that the limiting rod rotates to the bottom of the backing steel plate, so that the limiting rod and the lifting rod can clamp the backing steel plate. Then, the worker holds the lifting handle at the end of the lifting rod to lift the backing steel plate onto the rebar cage, moves and positions the backing steel plate, welds the backing steel plate to the rebar cage, and then rotates the handle to release the backing steel plate. This reduces the influence and interference of the rebar cage on the hand, and the lifting and positioning is more labor-saving and convenient.

[0013] The sliding mechanism of the slider allows for adjustment of the distance between the two sliders, thus enabling the application of backing steel plates of different widths and increasing the range of applications.

[0014] 2. By fixing a lifting ring in the middle of the lifting rod and connecting the two lifting rings with a lifting chain, a crane can be used to lift the lifting chain, thereby lifting the backing steel plate, which facilitates the transfer of the backing steel plate, increases the application scenarios, and saves labor and is convenient.

[0015] 3. By setting the locking element as a locking bolt structure, the slider can be locked onto the slide groove.

[0016] 4. By designing the lifting handle in a U-shape, it is easy to grip the lifting handle, and the crane hook can also be hooked onto the lifting handle to act as a lifting ring. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0019] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0020] Figure 3 for Figure 1 Enlarged view at point A;

[0021] Figure 4 for Figure 2 Enlarged view at point B;

[0022] In the diagram: 1. Lifting rod; 2. Slide groove; 3. Sliding block; 4. Rotating rod; 5. Rotating handle; 6. Limiting rod; 7. Lifting handle; 8. Lifting ring; 9. Lifting chain; 10. Ring buckle; 11. Hook; 12. Locking bolt; 13. Threaded hole; 14. Backing steel plate. Detailed Implementation

[0023] The following is in conjunction with the appendix Figure 1-4 The present invention will be described in further detail below. For clarity, only the structures relevant to the inventive features of the present invention are shown in the figures.

[0024] For ease of description, the coordinate system is defined as follows: Figure 1 As shown, the left and right directions are horizontal, the front and back directions are vertical, and the up and down directions are vertical.

[0025] This utility model discloses a tool for lifting and installing the backing steel plate of tunnel segments. (Refer to...) Figure 1 and Figure 2 A tool for lifting and installing the backing steel plate of a tunnel segment includes two lifting rods 1, on the left and right, such as... Figure 3 and Figure 4 As shown, each lifting rod 1 has a sliding groove 2 on both its front and rear sides. A slider 3 is slidably connected to each sliding groove 2, and the slider 3 has a T-shaped cross-section. The slider 3 is locked onto the sliding groove 2 by a locking device. For the locking device, such as… Figure 3 and Figure 4As shown, the locking component includes two locking bolts 12. The lifting rod 1 has multiple threaded holes 13 on both sides of the slide groove 2, corresponding to the locking bolts 12, arranged from front to back. The slider 3 has a limiting hole on both sides corresponding to the threaded hole 13. The locking bolts 12 are threadedly connected to the threaded holes 13, and the ends of the locking bolts 12 extend into the limiting holes; thus, the slider 3 can be locked onto the slide groove 2. The sliding mechanism of the slider 3 allows adjustment of the distance between the two sliders 3, thus enabling the application of backing steel plates 14 of different widths and increasing its usability.

[0026] like Figure 3 and Figure 4 As shown, a rotating rod 4 is rotatably connected to the middle of the slider 3. The upper end of the rotating rod 4 extends out of the slider 3, and a rotating handle 5 is connected to the upper end of the rotating rod 4. The lower end of the rotating rod 4 extends out of the slider 3, and a limiting rod 6 is fixed to the lower end of the rotating rod 4. An anti-slip layer, which can be made of rubber, is provided on the upper side of the limiting rod 6. The rotating handle 5, the rotating rod 4, and the limiting rod 6 are arranged in a "Z" shape. The net distance between the top of the limiting rod 6 and the bottom of the lifting rod 1 is greater than the thickness of the backing steel plate 14, so as to facilitate rotating the limiting rod 6 under the backing steel plate 14. In addition, when setting it up, the net distance between the top of the limiting rod 6 and the bottom of the lifting rod 1 should also be less than twice the thickness of the backing steel plate 14. A lifting handle 7 is fixed at both the front and rear ends of the lifting rod 1. The lifting handle 7 is U-shaped, which is convenient for hand gripping and can also be hooked onto the lifting handle 7, acting as a lifting ring 8. In addition, the lifting handle 7 is covered with soft rubber (not shown in the attached figure) to increase the comfort of the staff.

[0027] In addition, each lifting rod 1 has a lifting ring 8 fixed in the middle, and two lifting rings 8 are connected by a lifting chain 9. A loop 10 is fixed in the middle of the lifting chain 9, and hooks 11 that can be hung on the lifting rings 8 are fixed at both ends of the lifting chain 9. Therefore, a crane can be used to lift the lifting chain 9, thereby lifting the backing steel plate 14, which facilitates the transfer of the backing steel plate 14, increases the usage scenarios, and saves effort and is convenient.

[0028] This invention features two lifting rods 1, each with a sliding groove 2 at both ends. A slider 3 slides along the groove 2, and a rotating rod 4 is rotatably connected to the slider 3. A rotating handle 5 is connected to the upper end of the rotating rod 4, and a limiting rod 6 is connected to the bottom end of the rotating rod 4. The net distance between the top of the limiting rod 6 and the bottom of the lifting rod 1 is greater than the thickness of the backing steel plate 14. Therefore, when lifting the backing steel plate 14, the two lifting rods 1 are placed on the left and right sides of the backing steel plate 14, and then the distance is adjusted according to the width of the backing steel plate 14. Adjust the distance between the two sliders 3 and lock the sliders 3 onto the groove 2 with the locking device. Then rotate the handle 5 so that the limiting rod 6 rotates to the bottom of the backing steel plate 14. The limiting rod 6 and the lifting rod 1 can then clamp the backing steel plate 14. The worker then holds the lifting handle 7 at the end of the lifting rod 1 to lift the backing steel plate 14 onto the rebar cage, welds the backing steel plate 14 onto the rebar cage, and then rotates the handle 5 to release the backing steel plate 14. This reduces the influence and interference of the rebar cage on the hand, making lifting and placing more labor-saving and convenient.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. It should be understood that the specific embodiments described herein are only for understanding this utility model and are not intended to limit this utility model. All other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.

Claims

1. A pipe piece back cover steel plate lifting tool, characterized by: The lifting rod is provided with a lifting handle on the front and rear ends, and a lifting ring is fixed to the middle of each lifting rod.

2. A pipe section back-up steel plate lifting tool according to claim 1, characterized in that: The two lifting rings are connected by a lifting chain, and a ring buckle is fixed to the middle of the lifting chain.

3. A steel backing plate lifting tool for pipe sections according to claim 1, characterized in that: The locking member comprises two locking bolts, and the lifting rod is provided with a plurality of threaded holes corresponding to the locking bolts from front to back on the left and right sides of the sliding slot.

4. A steel backing plate lifting tool for pipe sections according to claim 1, characterized in that: The lifting handle is U-shaped.

5. A steel backing plate lifting tool for pipe sections according to claim 1, characterized in that: An antiskid layer is arranged on the upper side of the limiting rod.

6. A steel backing plate lifting tool for pipe sections according to claim 1, characterized in that: The lifting handle is wrapped with soft rubber.

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