A special lifting tool for gearboxes

Abstract

This utility model discloses a special lifting tool for gearboxes, relating to the field of lifting and transportation technology. It includes a crossbeam with a connecting structure above it for connecting to external lifting equipment. Below the crossbeam, at least one set of lifting chain assemblies for connecting lifting rings is provided. In this utility model, the crossbeam is the main load-bearing component of the lifting tool. The connecting structure above it connects to the external lifting equipment to transmit tensile force; the lifting chain assemblies below connect to the engine or gearbox via lifting rings to achieve lifting. The connection method can be selected according to the shape and weight distribution of the component. The crossbeam provides a load-bearing foundation, the connecting structure ensures reliable connection and force transmission, and the lifting chain assemblies and lifting rings work together effectively, improving lifting safety and stability and reducing the risk of component damage.

Description

Technical Field

[0001] This utility model relates to the field of lifting and transportation technology, specifically a special lifting tool for gearboxes. Background Technology

[0002] Lifting operations are frequently required during the production, assembly, and maintenance of engines and transmissions. Currently, most lifting tools on the market are general-purpose and lack optimized designs for specific components like engines and transmissions. Engines and transmissions have complex shapes, diverse structures, and irregular center of gravity distributions. Using general-purpose lifting tools makes precise positioning and stable lifting difficult, easily leading to swaying, tilting, and even collision damage, affecting product quality and production safety. Furthermore, different models of engines and transmissions vary significantly in size and weight, and general-purpose lifting tools cannot be flexibly adjusted to accommodate various specifications, resulting in low lifting efficiency. Therefore, there is an urgent need for a dedicated lifting tool specifically designed for engines and transmissions to solve the problems of poor adaptability, insufficient stability, and low efficiency of existing lifting tools when lifting such components. Utility Model Content

[0003] The purpose of this utility model is to provide a special lifting tool for gearboxes to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, this utility model provides a special lifting tool for gearboxes, including a crossbeam, a connecting structure for connecting external lifting equipment is provided above the crossbeam, and at least one set of lifting chain assemblies for connecting lifting rings is provided below the crossbeam.

[0005] Furthermore, the suspension chain assembly includes a suspension chain that is connected to the crossbeam via both a first rotating connecting shaft and a second rotating connecting shaft. The lower end of the suspension chain is connected to a lifting ring, and the suspension chain is provided with an adjusting sleeve for adjusting the length.

[0006] Furthermore, a central connecting block is provided on the crossbeam, and a supporting reinforcing rib is provided between the central connecting block and the crossbeam to enhance the structural strength.

[0007] Furthermore, the lifting ring is provided with a limiting block.

[0008] Furthermore, the support structure includes a support base, a support leg, and rollers. The support base is connected to the crossbeam, the support leg is located below the support base, and the rollers are installed at the bottom of the support leg.

[0009] Furthermore, the surfaces of the first rotary connecting shaft and the second rotary connecting shaft are hardened.

[0010] Furthermore, the roller is a swivel wheel.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. In this utility model, the crossbeam is the main load-bearing component of the lifting device. The upper connecting structure is connected to the external lifting equipment to transmit tensile force; the lower lifting chain assembly is connected to the engine or gearbox via lifting rings to achieve lifting. The connection method can be selected according to the shape and weight distribution of the components. The crossbeam provides a load-bearing foundation, the connecting structure ensures reliable connection and force transmission, and the lifting chain assembly and lifting rings work together to achieve targeted lifting, improve the safety and stability of lifting, and reduce the risk of component damage.

[0013] 2. In this utility model, the limiting block is fixed on the lifting ring. When the lifting ring swings due to external forces such as the shaking of the lifting equipment or wind during the lifting process, the limiting block will interfere with the surrounding components or the preset limiting structure, thereby limiting the swing amplitude of the lifting ring and controlling its swing range within a safe range. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a side view of the overall structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the connection structure between the lifting ring and the limiting block in this utility model;

[0017] Figure 4 This is a schematic diagram of the connection structure between the support leg and the roller in this utility model.

[0018] In the diagram: 1. Crossbeam; 2. Middle connecting block; 3. Support reinforcing rib; 4. First rotating connecting shaft; 5. Lifting chain; 6. Second rotating connecting shaft; 7. Adjusting sleeve; 8. Lifting ring; 9. Limiting block; 10. Support seat; 11. Support leg; 12. Roller. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figures 1-4 This utility model provides a technical solution:

[0021] See Figures 1-4As shown, a gearbox-specific lifting tool includes a crossbeam 1, a connecting structure for connecting external lifting equipment is provided above the crossbeam 1, and at least one set of lifting chain 5 assemblies for connecting lifting rings 8 is provided below the crossbeam 1.

[0022] The crossbeam 1 serves as the main load-bearing component of the lifting device. The connecting structure above it is connected to external lifting equipment such as a crane, transferring the tensile force of the lifting equipment to the crossbeam 1. The lifting chain 5 assembly below the crossbeam 1 is connected to the engine or gearbox via lifting rings 8, thereby enabling the lifting of the component. By setting at least one set of lifting chain 5 assemblies, a suitable connection method can be selected according to the shape and weight distribution of the component.

[0023] The crossbeam 1 provides a stable load-bearing foundation, and the connection structure ensures reliable connection with external lifting equipment, effectively transmitting lifting force. The lifting chain 5 assembly, together with the lifting rings 8, can be used to lift different types of engines and gearboxes. Compared with general-purpose lifting tools, it is more targeted, improves the safety and stability of lifting, and reduces the risk of component damage.

[0024] See Figure 1 The suspension chain 5 assembly includes a suspension chain 5 that is connected to the crossbeam 1 via a first rotating connecting shaft 4 and a second rotating connecting shaft 6. The lower end of the suspension chain 5 is connected to a lifting ring 8, and the suspension chain 5 is provided with an adjusting sleeve 7 for adjusting the length.

[0025] The lifting chain 5 is connected to the crossbeam 1 via both the first rotating connecting shaft 4 and the second rotating connecting shaft 6, allowing the lifting chain 5 to rotate flexibly within a certain range and facilitating the adjustment of the angle of the lifting ring 8. The adjusting sleeve 7 can adjust the length of the lifting chain 5 to adapt to the lifting height requirements of engines and gearboxes of different sizes. The lifting ring 8 at the lower end of the lifting chain 5 is used to hook components.

[0026] The first rotating connecting shaft 4 and the second rotating connecting shaft 6 provide the lifting chain 5 with rotational flexibility, enabling better alignment with the lifting parts of the engine and gearbox. The adjusting sleeve 7 can flexibly adjust the length of the lifting chain 5, allowing the lifting device to be adapted to various specifications of engines and gearboxes, improving the versatility and applicability of the lifting device, and meeting the lifting needs of different production scenarios.

[0027] See Figure 1 A central connecting block 2 is provided on the crossbeam 1, and a supporting reinforcing rib 3 is provided between the central connecting block 2 and the crossbeam 1 to enhance the structural strength.

[0028] The central connecting block 2 is installed on the crossbeam 1, and the supporting reinforcing rib 3 connects the central connecting block 2 and the crossbeam 1. During the lifting process, the supporting reinforcing rib 3 shares the pressure borne by the crossbeam 1, enhances the overall structural strength of the crossbeam 1, and prevents the crossbeam 1 from deforming due to excessive force.

[0029] The supporting reinforcing rib 3 enhances the structural strength of the crossbeam 1, making it less prone to deformation or damage when bearing the weight of the engine and gearbox and the lifting force. This extends the service life of the lifting equipment, improves the safety and reliability of the lifting equipment during the lifting process, and ensures the stable progress of the lifting operation.

[0030] See Figure 1 The lifting ring 8 is equipped with a limit block 9 to limit the swing range of the lifting ring 8.

[0031] The limiting block 9 is fixed on the lifting ring 8. When the lifting ring 8 swings due to external forces such as the shaking of the lifting equipment or wind during the hoisting process, the limiting block 9 will interfere with the surrounding components or the preset limiting structure, thereby limiting the swing amplitude of the lifting ring 8 and controlling its swing range within a safe range.

[0032] By limiting the swing range of the lifting ring 8, it effectively prevents dangerous situations such as the engine and gearbox colliding with surrounding objects or falling off due to excessive shaking during the lifting process, thereby improving the safety and stability of the lifting process and protecting the safety of the engine, gearbox, surrounding equipment, and personnel.

[0033] See Figure 1 The support structure includes a support base 10, a support leg 11, and a roller 12. The support base 10 is connected to the crossbeam 1, the support leg 11 is located below the support base 10, and the roller 12 is installed at the bottom of the support leg 11.

[0034] The support base 10 is connected to the crossbeam 1, and the support leg 11 is supported on the ground, providing stable support for the spreader. Rollers 12 are installed at the bottom of the support leg 11. When the spreader needs to be moved, the rollers 12 can roll on the ground to move the spreader; when the spreader is parked, the support leg 11 and the support base 10 keep the spreader stable.

[0035] The support structure allows the lifting device to be parked stably when not in use, preventing it from tipping over and causing damage. The rollers 12 facilitate easy movement and position adjustment of the lifting device by operators in workshops and other locations, improving its ease of use and flexibility, reducing the labor intensity of manual handling, and increasing work efficiency.

[0036] See Figure 1-2 The surfaces of the first rotary connecting shaft 4 and the second rotary connecting shaft 6 have been hardened.

[0037] During operation, the first rotating connecting shaft 4 and the second rotating connecting shaft 6 continuously bear the rotational friction of the lifting chain 5 as well as various external forces during the lifting process. After hardening treatment, their surface hardness increases, making them less prone to wear when subjected to these forces.

[0038] Surface hardening treatment improves the wear resistance of the first rotary connecting shaft 4 and the second rotary connecting shaft 6, reduces shaft wear caused by long-term use and friction, extends the service life of the rotary connecting shaft, reduces the maintenance and replacement costs of the lifting device, ensures the long-term stable and reliable operation of the lifting device, and reduces safety hazards caused by component wear.

[0039] See Figure 1-2 12 is a swivel wheel.

[0040] The roller 12 adopts a swivel wheel structure, and its internal special bearings and steering mechanism allow the roller 12 to rotate freely in the horizontal direction. When the spreader is pushed, the swivel wheel can roll in different directions, realizing multi-directional movement of the spreader.

[0041] The use of casters allows the spreader to move more flexibly in limited spaces such as workshops. Operators do not need to frequently adjust the direction of the spreader and can easily move it to the designated position according to actual needs, which greatly improves the ease of movement and work efficiency of the spreader. It is especially suitable for the complex working environment in engine and gearbox production workshops.

[0042] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A hoist dedicated to a gearbox, characterized in that: It includes a crossbeam (1), with a connection structure for connecting external lifting equipment above the crossbeam (1) and at least one set of lifting chain (5) assemblies for connecting lifting rings (8) below the crossbeam (1).

2. A spreader dedicated to a gearbox as claimed in claim 1, characterized in that: The suspension chain (5) assembly includes a suspension chain (5) that is connected to the crossbeam (1) via a first rotating connecting shaft (4) and a second rotating connecting shaft (6). The lower end of the suspension chain (5) is connected to a lifting ring (8), and the suspension chain (5) is provided with an adjusting sleeve (7) for adjusting the length.

3. A spreader dedicated to a gearbox as claimed in claim 2, characterized in that: The crossbeam (1) is provided with a central connecting block (2), and a supporting reinforcing rib (3) is provided between the central connecting block (2) and the crossbeam (1) to enhance the structural strength.

4. A spreader dedicated to a gearbox as claimed in claim 3, characterized in that: The lifting ring (8) is provided with a limiting block (9).

5. A spreader dedicated to a gearbox as claimed in claim 4, characterized in that: The support structure includes a support base (10), a support leg (11) and a roller (12). The support base (10) is connected to the crossbeam (1). The support leg (11) is located below the support base (10). The roller (12) is installed at the bottom of the support leg (11).

6. A gearbox-specific lifting tool as described in claim 5, characterized in that: The surfaces of the first rotary connecting shaft (4) and the second rotary connecting shaft (6) are hardened.

7. A spreader dedicated to a gearbox as claimed in claim 6, characterized in that: The roller (12) is a universal wheel.

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