Hoisting tool for shaft segment construction

Abstract

The utility model provides a kind of hoisting tool for vertical shaft segment construction. The hoisting tool includes segment clamping part and positioning bolt, the segment clamping part is U-shaped structure, and the U-shaped mouth width of segment clamping part is matched with the thickness of vertical shaft segment, the positioning bolt is arranged in the horizontal arm of U-shaped segment clamping part;The opening of the segment clamping part is clamped on the vertical shaft segment downward, and in clamping state, two horizontal arms of segment clamping part are located in the inner arc surface and outer arc surface of vertical shaft segment respectively, and the positioning bolt is inserted into the hoisting hole on the vertical shaft segment correspondingly;Multiple lifting lugs are provided at the part of segment clamping part far from opening end. The utility model can constrain two turning directions of horizontal and vertical plane of segment, prevent segment inside and outside turning during vertical shaft segment hoisting process;And rubber is pasted in the inner side of clamping groove to prevent damage after segment and lifting appliance contact and impact.

Description

Technical Field

[0001] This utility model relates to the field of shaft construction, specifically a hoisting tool for shaft segment construction. Background Technology

[0002] Shaft construction refers to the general term for operations such as vertical excavation, wall construction (forming a shaft), and equipment installation. Old-style shafts are shallow, small in diameter, and have short service lives. Their cross-sections are mostly rectangular, and they are often supported by wooden frames. However, as shaft depth and diameter increase, ground pressure multiplies, making wooden frames insufficient. Shafts are now often constructed using stone, steel reinforcement, and concrete. This method requires waiting for the concrete to solidify, resulting in long construction times and numerous factors affecting shaft strength, making quality control difficult and a long-standing challenge in shaft construction. To address these issues, engineers applied the method of assembling precast tunnel segments into ring supports, used in tunnel boring machines (TBMs), to shaft construction, creating a construction method that uses vertically assembled shaft segments.

[0003] In existing shaft segment assembly construction, spreader beam lifting tools are commonly used to lift and assemble the segments. However, shaft segments typically have many embedded parts, and the center of gravity of each segment is different. During the lifting and assembly process, the segments may tilt inwards or outwards, resulting in misalignment. In some projects using this lifting tool, the misalignment of the assembled segments is significant. Relying on bolts to pull the segments together is insufficient to adjust the misalignment. From a safety perspective, due to the heavy weight of the segments and the lack of lateral restraints to prevent inward or outward swaying, this method of lifting shaft segments may pose safety hazards. Therefore, how to provide a safe and reliable shaft segment lifting tool is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] To address the problem of hoisting vertical shaft segments, this utility model provides a hoisting tool for vertical shaft segment construction. This hoisting tool can prevent the segments from turning inside out during the hoisting process and can quickly install and connect the lifting equipment to the segments, reducing the hoisting time.

[0005] To achieve a hoisting tool for shaft segment construction, the hoisting tool includes a segment clamping part and a positioning pin. The segment clamping part has a U-shaped structure, and the width of the U-shaped opening of the segment clamping part matches the thickness of the shaft segment. The positioning pin is set on the horizontal arm of the U-shaped segment clamping part. The segment clamping part clamps the shaft segment with its opening facing downward. In the clamping state, the two horizontal arms of the segment clamping part are located on the inner and outer arc surfaces of the shaft segment, respectively, and the positioning pin is inserted into the corresponding hoisting hole on the shaft segment. Multiple lifting lugs are provided at the part of the segment clamping part away from the opening end.

[0006] The preferred technical solution of this utility model is as follows: the segment clamping part is a U-shaped structure composed of an L-shaped support frame and a vertical stop frame welded together. The vertical stop frame is located on the inner arc surface of the vertical shaft segment, and a counterweight is provided at one end of the segment clamping part near the vertical stop frame. The counterweight is welded to the end of the horizontal support arm of the L-shaped support frame. The lifting lugs are distributed on the outside of the horizontal support arm of the L-shaped support frame.

[0007] The preferred technical solution of this utility model is that anti-wear pads are provided on the contact surfaces of the two horizontal arms of the segment clamping part and the vertical shaft segments.

[0008] The preferred technical solution of this utility model is as follows: The positioning pin includes a pin hole opened on the segment clamping part, a pin cylinder welded to the end of the pin hole away from the vertical shaft segment, and a pin inserted into the pin cylinder. The pin cylinder has an inverted concave limiting groove, and the pin has a limiting rod. The pin moves along the pin cylinder and the pin hole and is inserted into the hoisting hole of the vertical shaft segment. When the pin moves, the limiting rod moves along the horizontal groove of the concave limiting groove, and when it moves to the vertical groove, it limits and locks the pin.

[0009] The preferred technical solution of this utility model is that the width of the segment clamping part along the circumferential direction of the vertical shaft segment is 1.5 to 2m.

[0010] The preferred technical solution of this utility model is as follows: each lifting lug is provided with multiple lifting holes at equal intervals, and the lifting tool also includes a lifting rope installed on each lifting lug, the length of which is equal to that of the lifting rope and connected to the same lifting point, which is located at the center of the segment clamping part.

[0011] The preferred technical solution of this utility model is that the lifting lugs are provided in four or six groups, symmetrically distributed on the outside of the horizontal support arm of the L-shaped support frame.

[0012] The preferred technical solution of this utility model is as follows: the positioning pins are provided in two sets, symmetrically arranged on the vertical support arm of the L-shaped support frame.

[0013] The beneficial effects of this utility model are:

[0014] (1) The lifting device of this utility model is set in the shape of a U-shaped slot. The U-shaped slot fixes the pipe segment and can constrain the two flipping directions of the horizontal and vertical surfaces of the pipe segment, preventing the pipe segment from flipping inside and outside during the hoisting process of the vertical shaft pipe segment; and the inner side of the slot is pasted with rubber to prevent the pipe segment from being damaged after contacting and colliding with the lifting device.

[0015] (2) This utility model adds a segment lifting tool pin positioning device, and the lifting tool pin is fixed in the lifting hole on the outer arc surface of the segment, which can quickly connect the lifting tool and the segment, so that the pin can be installed quickly and save the segment lifting time. Attached Figure Description

[0016] Figure 1 This is a side view of the structure of this utility model;

[0017] Figure 2 This is a front structural diagram of the present invention;

[0018] Figure 3 This is a schematic diagram of the locking state of the positioning pin in this utility model;

[0019] Figure 4 This is a schematic diagram of the positioning pin in the loosened state in this utility model;

[0020] Figure 5 This is a reference diagram showing the usage state of this utility model.

[0021] In the figure: 1—segment clamping part, 100—L-shaped support frame, 101—vertical stop, 102—counterweight block, 2—lifting lug, 200—lifting hole, 3—shaft segment, 4—positioning pin, 400—pin hole, 401—pin cylinder, 402—pin, 403—concave limiting groove, 404—limiting rod, 5—lifting hole, 6—lifting rope, 7—anti-wear pad. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments. Figures 1 to 5 All accompanying drawings are simplified versions of embodiments and are intended solely for the purpose of clearly and concisely illustrating the embodiments of this utility model. The technical solutions shown in the drawings below are specific solutions of embodiments of this utility model and are not intended to limit the scope of the claimed utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0023] In the description of this utility model, it should be understood that the terms "upper", "lower", "inner", "outer", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use, or the orientation or positional relationship that is commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] The embodiment provides a hoisting tool for vertical shaft segment construction, such as Figures 1 to 5As shown, the hoisting tool includes a segment clamping part 1 and a positioning pin 4. The segment clamping part 1 has a U-shaped structure, and its circumferential width along the vertical shaft segment 3 is 1.5-2m. The width of the U-shaped opening of the segment clamping part 1 matches the thickness of the vertical shaft segment 3. The positioning pin 2 is set on the horizontal arm of the U-shaped segment clamping part 1. The segment clamping part 1 clamps the vertical shaft segment 3 with its opening facing downwards. In the clamping state, the two horizontal arms of the segment clamping part 1 are located on the inner and outer arc surfaces of the vertical shaft segment 3, respectively, and the positioning pin 4 is inserted into the corresponding hoisting hole 5 on the vertical shaft segment 3. Multiple lifting lugs 2 are provided at the part of the segment clamping part 1 away from the opening end. Anti-wear pads 7 are provided on the contact surfaces between the two horizontal arms of the segment clamping part 1 and the vertical shaft segment 3.

[0025] In the embodiments, such as Figures 1 to 5 As shown, the segment clamping part 1 is a U-shaped structure welded together from an L-shaped support frame 100 and a vertical baffle 101. The vertical baffle 101 is located on the inner arc surface of the vertical shaft segment 3, and a counterweight 102 is provided at one end of the segment clamping part 1 near the vertical baffle 101. The counterweight 102 is welded to the end of the horizontal support arm of the L-shaped support frame 100. There are six sets of lifting lugs 2, symmetrically distributed on the outside of the horizontal support arm of the L-shaped support frame 100. Each lifting lug 2 is provided with multiple lifting holes 200 at equal intervals. The lifting tool also includes a lifting rope 6 installed on each lifting lug 2. The length of the lifting rope 6 is equal to that of the other lifting lugs, and they are connected to the same lifting point. The position of the lifting point is located at the center of the segment clamping part 1.

[0026] In the embodiments, such as Figures 1 to 5 As shown, the positioning pins 4 are provided in two sets, symmetrically arranged on the vertical support arm of the L-shaped support frame 100. The positioning pins 4 include a pin hole 400 opened on the segment clamping part 1, a pin cylinder 401 welded to the end of the pin hole 400 away from the shaft segment 3, and a pin 402 inserted into the pin cylinder 401. The pin cylinder 401 has an inverted concave limiting groove 403, and the pin 402 has a limiting rod 404. The pin 402 moves along the pin cylinder 401 and the pin hole 400 and is inserted into the lifting hole 5 of the shaft segment 3. When the pin 402 moves, the limiting rod 404 moves along the horizontal groove of the concave limiting groove 403, and when it moves to the vertical groove, it limits and locks the pin 402.

[0027] The lifting device usage process in this embodiment is as follows: After the shaft segment turning operation is completed, the lifting device is precisely placed in the middle of the shaft segment 3, and then the lifting device is slowly lowered so that the segment clamping part 1 clamps the shaft segment 3. Figure 5As shown; at this time, the shaft segment 3 is located in the U-shaped area of ​​the segment clamping part 1, and the two sets of positioning pins 4 are directly opposite the two lifting holes 5 in the middle of the shaft segment 3. Then, the pins 402 are moved. When the pins 402 move, the limiting rod 404 moves along the horizontal groove of the concave limiting groove 403. When the pins 402 are inserted into the lifting holes 5, the limiting rod 404 just moves to the vertical groove of the concave limiting groove 403. The limiting rod 404 is rotated downward so that the limiting rod 404 is locked in the vertical groove of the concave limiting groove 403. Figure 3 As shown, the positioning pin 4 is locked in place.

[0028] During the formal hoisting process, the first step is to carefully check whether the pins are securely locked. After confirming that everything is in order, the segment is lifted smoothly by 30cm for a trial hoisting operation. When the segment is in a stable state and there are no abnormalities, the formal hoisting can then proceed.

[0029] This utility model of a vertical shaft segment lifting tool is of great significance in vertical shaft construction. Its high efficiency and stability not only significantly improve construction efficiency but also greatly enhance safety and reduce the risk of accidents. This utility model has been used more than 30 times in the Shanghai Hongxin Pumping Station's initial rainwater storage tank (pipe gallery) project. Compared with conventional vertical shaft segment lifting tools, it provides more stable segment lifting, is easier to install and dismantle, and has a high safety factor, receiving unanimous praise from the owner and supervision unit.

[0030] The above description is merely one embodiment of this utility model, and while it is quite specific and detailed, it should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A hoisting tool for vertical shaft segment construction, characterized in that: The hoisting tool includes a segment clamping part (1) and a positioning pin (4). The segment clamping part (1) has a U-shaped structure, and the width of the U-shaped opening of the segment clamping part (1) matches the thickness of the vertical shaft segment (3). The positioning pin (4) is set on the horizontal arm of the U-shaped segment clamping part (1). The segment clamping part (1) is clamped on the vertical shaft segment (3) with its opening facing downward. In the clamping state, the two horizontal arms of the segment clamping part (1) are located on the inner arc surface and outer arc surface of the vertical shaft segment (3), respectively. The positioning pin (4) is inserted into the hoisting hole (5) on the vertical shaft segment (3). Multiple lifting lugs (2) are provided at the part of the segment clamping part (1) away from the opening end.

2. The hoisting tool for shaft segment construction according to claim 1, characterized in that: The segment clamping part (1) is a U-shaped structure welded together by an L-shaped support frame (100) and a vertical baffle (101). The vertical baffle (101) is located on the inner arc surface of the vertical shaft segment (3), and a counterweight (102) is provided at one end of the segment clamping part (1) near the vertical baffle (101). The counterweight (102) is welded to the end of the horizontal support arm of the L-shaped support frame (100). The lifting lugs (2) are distributed on the outside of the horizontal support arm of the L-shaped support frame (100).

3. A hoisting tool for shaft segment construction according to claim 1 or 2, characterized in that: Anti-wear pads (7) are provided on the contact surfaces of the two horizontal arms of the segment clamping part (1) and the vertical shaft segment (3).

4. A hoisting tool for shaft segment construction according to claim 1 or 2, characterized in that: The positioning pin (4) includes a pin hole (400) opened on the segment clamping part (1), a pin cylinder (401) welded to the end of the pin hole (400) away from the shaft segment (3), and a pin (402) inserted into the pin cylinder (401). The pin cylinder (401) is provided with an inverted concave limiting groove (403), and the pin (402) is provided with a limiting rod (404). The pin (402) moves along the pin cylinder (401) and the pin hole (400) and is inserted into the hoisting hole (5) of the shaft segment (3). When the pin (402) moves, the limiting rod (404) moves along the horizontal groove of the concave limiting groove (403) and locks the pin (402) when it moves to the vertical groove.

5. A hoisting tool for shaft segment construction according to claim 1 or 2, characterized in that: The width of the segment clamping part (1) along the circumference of the vertical shaft segment (3) is 1.5 to 2 m.

6. A hoisting tool for shaft segment construction according to claim 1 or 2, characterized in that: Each lifting lug (2) is provided with multiple lifting holes (200) at equal intervals. The lifting tool also includes a lifting rope (6) installed on each lifting lug (2). The length of the lifting rope (6) is equal to that of the lifting lug (2) and it is connected to the same lifting point. The position of the lifting point is located at the center of the segment clamping part (1).

7. A hoisting tool for vertical shaft segment construction according to claim 2, characterized in that: The lifting lugs (2) are provided in four or six groups, symmetrically distributed on the outside of the horizontal support arm of the L-shaped support frame (100).

8. A hoisting tool for vertical shaft segment construction according to claim 2, characterized in that: The positioning pins (4) are provided in two sets, symmetrically arranged on the vertical support arm of the L-shaped support frame (100).

Images