Simple hoisting tool for heavy material in narrow space

Abstract

The utility model relates to tunnel construction technical field, concretely relates to a kind of simple hoisting tool for heavy material in narrow space, including the flatbed car capable of walking along track car top surface, column is equipped on the flatbed car, and the column is equipped with crossbeam;The crossbeam includes support arm and rotating arm, the support arm is connected the column, the rotating arm one end is hinged with the support arm, and the other end is equipped with hoisting mechanism.The utility model is by being equipped with the flatbed car capable of walking along track car top surface, column and the crossbeam with support arm and rotating arm, can realize the independent movement and accurate positioning of hoisting equipment under the limited space in tunnel, replaces inefficient manpower handling, and significantly improves the efficiency of material transfer and installation.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction technology, and in particular to a simple hoisting tool for heavy materials in narrow spaces. Background Technology

[0002] In the construction of tunnels, subways, and other similar projects, a large number of heavy tunnel structural components (such as arch frames, supporting steel beams, and precast slabs) need to be transported to the work face via heavy-duty railcars laid at the bottom of the tunnel. However, unloading these structural components from large railcars (main railcars) and transferring them to the installation location is currently a bottleneck in construction efficiency and safety. Large hoisting equipment is difficult to access for tunnel operations. Therefore, for heavy steel structural components, workers usually pick, move, and unload them, which has the following drawbacks: 1. Extremely low efficiency: Manual handling is slow, requires a large number of people to coordinate, takes a long time, and seriously restricts the construction progress; 2. Extremely high safety risks: During the handling of heavy and sharp steel structural components, serious personal injury accidents such as collisions, squeezing, and crushing are very likely to occur. At the same time, the damp environment and insufficient light inside the tunnel further increase the risks of manual operations. 3. High labor intensity: It is a huge test of workers' physical strength, making it difficult to guarantee continuous and stable work quality. Utility Model Content

[0003] The purpose of this utility model is to overcome the technical problems of low efficiency, huge safety hazards and high labor intensity in the traditional tunnel construction method of relying on manual handling of heavy structural components from the main track vehicle, and to provide a simple hoisting tool for heavy materials in narrow spaces.

[0004] This utility model provides a simple hoisting tool for heavy materials in narrow spaces, including a flatbed cart that can travel along the top surface of a railcar, the flatbed cart being equipped with a column and the column being equipped with a crossbeam; The crossbeam includes a support arm and a rotating arm. The support arm is connected to the column. One end of the rotating arm is hinged to the support arm, and the other end is equipped with a lifting mechanism.

[0005] This utility model discloses a simple hoisting tool for heavy materials in narrow spaces. In use, first, the flatbed truck is started and driven to the side of the heavy material (such as tunnel steel structure components) to be hoisted on the main railcar. The horizontal rotation of the boom ensures the hoisting mechanism is accurately suspended directly above the material. Then, the material is connected to the hoisting mechanism, which vertically lifts the material off the bearing surface. Next, the flatbed truck is moved along the top surface of the railcar to the unloading point. Upon reaching the designated position, the hoisting mechanism is controlled to slowly lower the material, ensuring precise placement. After releasing the bindings, a single hoisting operation is completed. Repeating the above process allows for continuous and efficient transfer of all materials.

[0006] Preferably, the lifting mechanism includes a winch mounted on the rotating arm, the winch being detachably connected with a binding strap.

[0007] The winch provides stable and reliable vertical lifting power and is the core of heavy material hoisting. The lashing straps can be connected to hoisting objects of different shapes and weights, greatly enhancing the versatility and flexibility of the tooling.

[0008] Preferably, a fixed sleeve is vertically provided at one end of the support arm that connects to the rotating arm, and a connecting shaft that cooperates with the fixed sleeve is provided at one end of the rotating arm that connects to the support arm.

[0009] The fit between the fixed sleeve and the connecting shaft achieves a simple, reliable, and low-cost hinge connection. This structure is easy to process and assemble, and can withstand large bending moments and shear forces, ensuring the structural stability and smooth rotation of the rotating arm when lifting heavy objects.

[0010] Preferably, the support arm is hinged to the top of the column, and the support arm can rotate laterally around the circumference of the column.

[0011] The support arm can rotate laterally around the column (horizontal rotation), which expands the working range of the lifting mechanism from a fixed straight line to a fan-shaped or even circular area. This means that materials can be lifted and rotated to the side of the railcar for unloading without moving the flatbed, greatly improving operational flexibility and solving the problem of not being able to move laterally on a narrow rail platform.

[0012] Preferably, a fixed shaft is vertically provided at the top of the column, and a connecting hole that mates with the fixed shaft is provided at one end of the support arm that connects to the column.

[0013] The fit between the fixed shaft and the connecting hole ensures the stability of the rotation center, preventing the entire beam from shifting during rotation and load-bearing. The structure is simple, sturdy, and durable.

[0014] Preferably, a diagonal brace is connected between the column and the support arm, and the diagonal brace, the column and the support arm form a triangle. A roller assembly is provided at one end of the diagonal brace near the column, and the diagonal brace abuts against the column through the roller assembly.

[0015] The diagonal brace, along with the column and support arm, forms a stable triangular structure, significantly enhancing the overall rigidity and bending resistance of the beam. This effectively prevents excessive deformation at the base of the support arm when lifting heavy loads. The unique roller assembly design allows the diagonal brace to provide strong support without restricting the lateral rotation of the support arm. The roller assembly allows the diagonal brace to roll around the surface of the column as the support arm rotates, resolving the contradiction of "both stable support and flexible rotation".

[0016] Preferably, the support arm has a vertical rod at its bottom, and the lower end of the vertical rod is connected to one end of the diagonal brace that abuts against the column.

[0017] The vertical rod connects the stress point of the support arm to the support point of the diagonal brace more directly, further optimizing the force transmission path. It helps to more effectively transfer most of the bending moment generated by hoisting to the diagonal brace and column, reducing the burden on the hinge point, making the structure more rationally stressed and more stable overall.

[0018] Preferably, the roller assembly includes an arc-shaped plate connected to the diagonal brace, and rollers are respectively provided at both ends of the arc.

[0019] The curved plate design allows the roller assembly to better fit the cylindrical column surface, and the rollers at both ends form a stable "clamping" structure, ensuring that the roller assembly always maintains good contact with the column and rolls smoothly during the rotation of the support arm, preventing the diagonal brace from detaching or getting stuck, and ensuring the reliability and stability of the rotation.

[0020] Preferably, a gasket is provided around the portion of the column that abuts against the roller assembly.

[0021] The shims protect the main body of the column. Rollers rolling and rubbing against the column surface for a long time will cause wear. With replaceable shims, wear only occurs on the shims, protecting the more important column structure, extending the service life of the tooling, and reducing maintenance costs.

[0022] Preferably, it also includes a light strip, which is arranged along the length of the crossbeam.

[0023] This design directly addresses the safety hazards of "humid environment and insufficient light in tunnels" mentioned in the background technology. The light strip provides direct and sufficient lighting for the hoisting operation area, greatly improving the visibility of the working environment and effectively avoiding safety accidents such as misoperation and collisions caused by dim light. It significantly improves the safety of working at night or in poor lighting conditions.

[0024] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model provides a simple hoisting tool for heavy materials in narrow spaces. By setting up a flatbed cart, columns, and crossbeams with support arms and rotating arms that can travel along the top surface of the main track vehicle, the hoisting equipment can be moved autonomously and positioned precisely in the limited space of the tunnel, replacing inefficient manual handling and significantly improving the efficiency of material transfer and installation. 2. This utility model provides a simple hoisting tool for heavy materials in narrow spaces. By hinged connecting the rotating arm and the support arm, it can achieve a wide range of coverage and precise fine-tuning of hoisting operations in the horizontal plane. Operators can remotely complete hoisting without entering under the heavy object, which greatly reduces the safety risks of collision, squeezing, and crushing. 3. This utility model provides a simple hoisting tool for heavy materials in narrow spaces. By integrating a winch to replace manual labor in lifting heavy objects, it reduces labor intensity and ensures the continuous and stable quality of operations. Attached Figure Description

[0025] Figure 1 This is a front view of a simple hoisting tool for heavy materials in a narrow space according to this utility model; Figure 2 yes Figure 1 Enlarged view of area A in the middle; Figure 3 This is a schematic diagram of the structure of the roller assembly described in this utility model; Figure 4 This is a side view of a simple hoisting tool for heavy materials in a narrow space according to this utility model; Marked in the image: 1-Flatbed trolley, 2-Column, 21-Fixed shaft, 3-Crossbeam, 31-Support arm, 311-Fixed sleeve, 32-Rotating arm, 321-Connecting shaft, 4-Lifting mechanism, 41-Winder, 42-Binding strap, 5-Diagonal brace, 6-Roller assembly, 61-Arc plate, 62-Roller, 7-Vertical rod, 8-Shim, 9-Light strip, 10-Carrying plate. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0027] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0028] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0029] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0030] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0031] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0032] Example 1 like Figure 1 As shown, a simple hoisting tool for heavy materials in a narrow space includes a flatbed 1 that can travel along the top surface of a railcar. The bottom of the flatbed 1 is equipped with running wheels that are adapted to the running rails on the top of the railcar. The flatbed 1 is equipped with a column 2, and the column 2 is equipped with a crossbeam 3. The crossbeam 3 includes a support arm 31 and a rotating arm 32. The support arm 31 is connected to the column 2. One end of the rotating arm 32 is hinged to the support arm 31, and the other end is provided with a lifting mechanism 4.

[0033] In optional implementations, such as Figure 1 and Figure 2As shown, in order to achieve the hinge connection between the rotating arm 32 and the support arm 31, a fixed sleeve 311 can be provided at the end of the support arm 31, and a connecting shaft 321 that cooperates with the fixed sleeve 311 can be provided at the end of the rotating arm 32.

[0034] In one of several implementation methods, such as Figure 1 As shown, the lifting mechanism 4 may include a winch 41 and a binding strap 42.

[0035] Winch 41: Located at the end of the rotating arm 32, the lifting rope of winch 41 is provided with a lifting ring; Binding strap 42: The end of the binding strap 42 is provided with a buckle for detachable connection of the lifting ring at the end of the lifting rope.

[0036] In one or more implementations, such as Figure 1 As shown, the support arm 31 can be hinged to the column 2. A fixed shaft 21 is provided on the top of the column 2, and a connecting hole that mates with the fixed shaft 21 is provided at the end of the support arm 31 that connects to the column 2.

[0037] In one or more implementations, such as Figure 1 As shown, a diagonal brace 5 can be installed between the column 2 and the support arm 31. The diagonal brace 5, the column 2, and the support arm 31 form a triangle. A roller assembly 6 is provided at one end of the diagonal brace 5 near the column 2. The diagonal brace 5 abuts against the column 2 through the roller assembly 6. The diagonal brace 5, the column 2, and the support arm 31 form a stable triangular structure, which significantly enhances the overall rigidity and bending resistance of the beam 3 and effectively prevents excessive deformation at the root of the support arm 31 when lifting heavy loads. The unique roller assembly 6 design allows the diagonal brace 5 to provide strong support without restricting the lateral rotation of the support arm 31. The roller assembly 6 allows the diagonal brace 5 to roll around the surface of the column 2 as the support arm 31 rotates, thus solving the contradiction of "both stable support and flexible rotation".

[0038] In optional implementations, such as Figure 1 As shown, a vertical rod 7 can be added to the bottom of the support arm 31. The lower end of the vertical rod 7 is connected to the end of the diagonal brace 5. The vertical rod 7 connects the force-bearing point of the support arm 31 with the support point of the diagonal brace 5 more directly, further optimizing the force transmission path. It helps to more effectively transmit most of the bending moment generated by hoisting to the diagonal brace 5 and the column 2, reducing the burden on the hinge point, making the structure more rationally stressed and the overall stability higher.

[0039] In optional implementations, such as Figure 1 and Figure 3As shown, the roller assembly 6 may include an arc-shaped plate 61, which is connected to the diagonal brace 5. Rollers 62 are respectively provided at both ends of the arc. The arc-shaped plate 61 is designed so that the roller assembly 6 can better fit the cylindrical column 2 surface. The rollers 62 at both ends form a stable "clamping" structure, ensuring that the roller assembly 6 always maintains good contact with the column 2 and rolls smoothly during the rotation of the support arm 31, preventing the diagonal brace 5 from disengaging or getting stuck, and ensuring the reliability and stability of the rotation.

[0040] In optional implementations, such as Figure 1 As shown, a gasket 8 is provided around the part of the column 2 that abuts against the roller assembly 6. The gasket 8 serves to protect the main body of the column 2. The roller 62 will wear out due to long-term rolling friction on the surface of the column 2. With the replacement gasket 8, the wear only occurs on the gasket 8, protecting the more important column 2 structure, extending the service life of the tooling, and reducing maintenance costs.

[0041] In one or more implementations, such as Figure 1 As shown, a light strip 9 can also be set, which is set along the length of the crossbeam 3. This design directly addresses the safety hazards of "humid environment and insufficient light in the tunnel" mentioned in the background technology. The light strip 9 provides direct and sufficient lighting for the hoisting operation area, which greatly improves the visibility of the working environment, effectively avoids safety accidents such as misoperation and collision caused by dim light, and significantly improves the safety of working at night or under poor lighting conditions.

[0042] In one or more implementations, such as Figure 4 As shown, a material carrier plate 10 can also be set up. The material carrier plate 10 is detachably connected to the flatbed truck 1 via a hook. The material carrier plate 10 is used to load the materials required during the construction process.

[0043] Example 2 like Figure 1 and Figure 2 As shown, a method for hoisting heavy objects in a tunnel, using a simple hoisting fixture for heavy materials in a narrow space as described in Example 1, includes the following steps: S1: Tooling positioning: Move the flatbed trolley 1 along the railcar to the construction position so that the working range of the crossbeam 3 covers the heavy materials to be hoisted (such as tunnel arches, supporting steel beams, etc.); adjust the position of the hoisting mechanism 4 by the lateral rotation of the support arm 31 around the column 2 and the hinged rotation of the rotating arm 32 relative to the support arm 31, so that it is accurately suspended directly above the material.

[0044] S2: Material binding and lifting: The operator securely binds the binding strap 42 to the designated lifting point of the material and connects the buckle at the end of the binding strap 42 to the lifting ring at the end of the lifting rope of the winch 41; after confirming that the binding is reliable, the winch 41 is started and the material is slowly lifted so that it is completely removed from the bearing surface of the load plate 10; during the lifting process, observe whether the material is stable. If there is any swaying, it can be stabilized by finely adjusting the angle of the rotating arm 32.

[0045] S3: Transfer and Positioning: After the material is lifted to a safe height (usually 0.3-0.5 meters above the bearing surface), the flatbed trolley 1 is operated to travel smoothly along the top surface of the railcar to transfer the material to the unloading point (such as near the installation position on the tunnel side wall). During the transfer, the position of the material can be adjusted by rotating the crossbeam 3 as needed to avoid collisions with surrounding equipment or structures.

[0046] S4: Material lowering and positioning: After reaching the designated unloading point, the material is precisely moved to the top of the installation position by rotating the rotating arm 32; the winch 41 is slowly reversed to lower the material until it makes stable contact with the installation base or support structure; close observation is required during the lowering process to ensure accurate positioning of the material.

[0047] S5: Untying and Tooling Reset: After confirming that the material is in a stable position, untie the connection between the tying strap 42 and the material, as well as the connection between the tying strap 42 and the lifting ring of the winch 41; reset the lifting mechanism 4 to a safe position (such as retracting the rotating arm 32 to be in a straight line with the support arm 31), to prepare for the next lifting operation.

[0048] S6: Repeated operation: Repeat steps S1 to S5 until all planned material transfer work is completed; in low-light working environment, the light strip 9 set along the crossbeam 3 can be turned on to provide sufficient lighting and ensure work safety.

[0049] Through the above steps, the tooling of this utility model enables the safe and efficient hoisting and transfer of heavy materials in narrow tunnel spaces, significantly reducing labor intensity and safety risks.

[0050] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A simple hoisting tool for heavy materials in a narrow space, characterized in that, Includes a flatbed vehicle (1) capable of traveling along the top surface of a railcar, the flatbed vehicle (1) having a column (2) and the column (2) having a crossbeam (3); The crossbeam (3) includes a support arm (31) and a rotating arm (32). The support arm (31) is connected to the column (2). One end of the rotating arm (32) is hinged to the support arm (31), and the other end is provided with a lifting mechanism (4).

2. The simple hoisting fixture for heavy materials in a narrow space according to claim 1, characterized in that, The lifting mechanism (4) includes a winch (41) mounted on the rotating arm (32), and the winch (41) is detachably connected to a strap (42).

3. The simple hoisting fixture for heavy materials in a narrow space according to claim 1, characterized in that, The support arm (31) is vertically provided with a fixed sleeve (311) at one end connected to the rotating arm (32), and the rotating arm (32) is provided with a connecting shaft (321) that cooperates with the fixed sleeve (311) at one end connected to the support arm (31).

4. The simple hoisting fixture for heavy materials in a narrow space according to claim 1, characterized in that, The support arm (31) is hinged to the top of the column (2), and the support arm (31) can rotate laterally around the circumference of the column (2).

5. The simple hoisting fixture for heavy materials in a narrow space according to claim 4, characterized in that, The top of the column (2) is vertically provided with a fixed shaft (21), and the end of the support arm (31) connected to the column (2) is provided with a connecting hole that cooperates with the fixed shaft (21).

6. The simple hoisting fixture for heavy materials in a confined space according to claim 5, characterized in that, A diagonal brace (5) is connected between the column (2) and the support arm (31). The diagonal brace (5), the column (2) and the support arm (31) form a triangle. A roller assembly (6) is provided at one end of the diagonal brace (5) near the column (2). The diagonal brace (5) abuts against the column (2) through the roller assembly (6).

7. The simple hoisting fixture for heavy materials in a confined space according to claim 6, characterized in that, The support arm (31) has a vertical rod (7) at its bottom, and the lower end of the vertical rod (7) is connected to the diagonal brace (5) which abuts against one end of the column (2).

8. The simple hoisting fixture for heavy materials in a narrow space according to claim 6, characterized in that, The roller assembly (6) includes an arc plate (61), which is connected to the diagonal brace (5), and rollers (62) are respectively provided at both ends of the arc.

9. A simple hoisting fixture for heavy materials in a confined space according to claim 6, characterized in that, A gasket (8) is provided around the part of the column (2) that abuts against the roller assembly (6).

10. A simple lifting fixture for heavy materials in a confined space according to any one of claims 1-9, characterized in that, It also includes a light strip (9), which is arranged along the length of the crossbeam (3).

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