Hoisting device with position adjusting function

Abstract

The utility model discloses a lifting device with a position adjusting function, which comprises a lifting lug body, a rotatable eccentric pin bush is arranged at the upper part of the lifting lug body, a lifting hole is formed in the eccentric pin bush and is through along the horizontal direction, and a fixing piece for limiting the rotation of the eccentric pin bush is also arranged on the lifting lug body; the lifting lug comprises a lifting lug body, a connecting table is arranged on the lower portion of the lifting lug body, a vertically-through connecting hole is formed in the connecting table, a fastening bolt penetrates through the connecting hole downwards, the connecting hole is an unthreaded hole, the diameter of the unthreaded hole is larger than the outer diameter of the fastening bolt, and an eccentric gasket is arranged between the head of the fastening bolt and the connecting table. The height of a lifting point and the position of a fastening bolt can be adjusted, so that one set of lifting appliance is adaptive to a plurality of series of top covers with the same structure and different sizes.

Description

Technical Field

[0001] The utility model relates to a hoisting device with a position adjusting function, belonging to the technical field of lifting tools. Background Art

[0002] For large hydro turbine components, such as runner, main shaft, top cover and bottom ring during the assembly process, the existing technical solution is to install bow shackles in the special lifting tools of the above components, usually with four-point or two-point lifting. Due to the length error of the lifting wire rope of the component to be lifted, it is very difficult to lift the workpiece horizontally. Usually, the horizontal error is 10 - 20 mm. This error value will cause the component to be lifted to be in an inclined state. When assembling other components in an inclined state, the existing hoisting method cannot adjust the heights of several lifting points, resulting in low assembly efficiency, and there are also safety and quality risks. It is very easy to cause difficulties in assembling between components, and even damage the components to be assembled. Moreover, the lifting tool has poor versatility. For multiple top covers of the same structure with different size series, usually a set of special lifting tools needs to be designed for each one for hoisting. Content of the Utility Model

[0003] The purpose of the utility model is to provide a hoisting device with a position adjusting function, which can adjust the height of the lifting point and the position of the fastening bolt, and realize that one set of lifting tool is adapted to multiple top covers of the same structure with different size series.

[0004] The technical solution adopted by the utility model is as follows:

[0005] A hoisting device with a position adjusting function includes a lifting lug body. The upper part of the lifting lug body is provided with a rotatable eccentric pin sleeve. The eccentric pin sleeve has a hoisting hole which penetrates along the horizontal direction. The lifting lug body is also provided with a fixing part for restricting the rotation of the eccentric pin sleeve. The lower part of the lifting lug body is provided with a connecting platform. The connecting platform is provided with a connecting hole which penetrates up and down. A fastening bolt passes through the connecting hole downward. The connecting hole is a smooth hole, and the diameter of the smooth hole is larger than the outer diameter of the fastening bolt. An eccentric washer is arranged between the head of the fastening bolt and the connecting platform.

[0006] Optionally, the fixing part is a tightening bolt, and the axis of the tightening bolt is along the radial direction of the outer peripheral surface of the eccentric bushing.

[0007] Optionally, the tightening bolt is arranged above the eccentric pin sleeve.

[0008] Optionally, the connecting holes include multiple ones, and the multiple connecting holes are symmetrically distributed on both sides of the lifting lug body respectively.

[0009] Optionally, a rotating head is arranged on one side of the eccentric pin sleeve.

[0010] Alternatively, the rotating head is a hexagonal head.

[0011] Alternatively, a positioning pin is further provided on the connecting table, and the upper part of the positioning pin is arranged inside the connecting table.

[0012] Alternatively, a counterbore is provided at the bottom of the connecting table and arranged upward, and the positioning pin is arranged inside the counterbore.

[0013] Alternatively, two of the clamping bolts are provided on each side of the lifting lug body, and the positioning pin is arranged between the two clamping bolts.

[0014] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present utility model are as follows:

[0015] 1. For a lifting device with a position adjustment function provided by the present utility model, an eccentric pin sleeve structure is added to the position of the wire rope hole of the lifting tool. During the lifting process, the height of the lifting point at different positions can be adjusted by adjusting the eccentric pin sleeve, and then fixed by the tightening bolt to ensure the flatness of the top cover during the lifting process.

[0016] 2. For a lifting device with a position adjustment function provided by the present utility model, compared with the traditional lifting scheme, an eccentric washer is adopted on the flange of the top cover for clamping, so as to increase the range of the clamping hole of the lifting tool, thereby increasing the versatility of this device and meeting the assembly of top covers of various sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the present utility model.

[0018] Reference numerals in the figure: 1 - lifting lug body, 2 - positioning pin, 3 - eccentric washer, 4 - clamping bolt, 5 - tightening bolt, 6 - eccentric pin sleeve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The present utility model will be described in detail below with reference to the drawings.

[0020] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0021] A lifting device with a position adjustment function, as Figure 1As shown, it includes a lifting ear body 1, the upper part of which is provided with a rotatable eccentric pin sleeve 6, the eccentric pin sleeve 6 has a lifting hole, the lifting hole is passed through in the horizontal direction, and the lifting ear body 1 is also provided with a fixing part for limiting the rotation of the eccentric pin sleeve 6; the lower part of the lifting ear body 1 is provided with a connecting platform, the connecting platform is provided with a connecting hole that passes through from top to bottom, the connecting hole is downwardly penetrated by a locking bolt 4, the connecting hole is a light hole, the diameter of the light hole is larger than the outer diameter of the locking bolt 4, and an eccentric washer 3 is provided between the head of the locking bolt 4 and the connecting platform.

[0022] Specifically, the lifting ear body 1 is the basic part of the lifting device, which is used to connect with the object to be lifted. The eccentric pin sleeve 6 is located at the upper part of the lifting ear body 1. The eccentric design allows the position of the internal lifting hole to be fine-tuned by rotation, thereby changing the position of the lifting point, so that the sling or hook can pass through the lifting hole for lifting operations. The fixing part is used to limit the rotation of the eccentric pin sleeve 6 to ensure that the lifting hole will not move accidentally after being adjusted to a suitable position. The fixing part can be a locking bolt, a clamp or other forms of locking devices, and its function is to maintain the stability of the eccentric pin sleeve 6. The connecting platform is located at the lower part of the lifting ear body 1, which is used to engage with the connecting part of the object to be lifted and can withstand the tightening force from the closing bolt 4. The connecting hole is through the upper and lower parts of the connecting platform, which is used to pass the closing bolt 4 to fix the lifting ear body 1 and the object to be lifted together. The lower part of the closing bolt 4 passes through the connecting platform and is arranged in the top cover. The design of the light hole allows the closing bolt 4 to have a certain amount of activity space in the hole, which is convenient for adjustment and installation. Since the diameter of the connection hole is larger than the outer diameter of the bolt 4, the bolt can be adjusted in position in the hole to meet different connection requirements. The eccentric washer 3 is located between the head of the bolt 4 and the connection platform, and its eccentric design can be used to match the relative position of the bolt 4 and the connection hole, further optimizing the balance of the lifting.

[0023] As another specific embodiment, the fixing member is a jacking bolt 5, and the axis of the jacking bolt 5 is along the radial direction of the outer peripheral surface of the eccentric sleeve. When the jacking bolt 5 is tightened, it will press against the outer peripheral surface of the eccentric pin sleeve 6, thereby limiting its rotation. The bolt is directly pointed to the center line of the eccentric pin sleeve 6, ensuring that the bolt can effectively transmit force when tightened, so that the eccentric pin sleeve 6 is firmly held in the selected position.

[0024] As another specific embodiment, the jacking bolt 5 is arranged above the eccentric pin sleeve 6. When the hoist is lifted, the eccentric pin sleeve 6 is subjected to an upward force, while the jacking bolt 5 and the lifting ear body 1 are subjected to the downward gravity of the top cover itself, and the directions of the forces exerted on the jacking bolt 5 and the eccentric sleeve match each other, which can make the jacking effect more reliable.

[0025] As another specific embodiment, the connecting holes include a plurality of them, and the plurality of connecting holes are symmetrically distributed on both sides of the lug body 1 respectively. The plurality of symmetrically distributed connecting holes can provide a more balanced lifting method, reducing distortion and skew during the lifting process.

[0026] As another specific embodiment, a rotating head is provided on one side of the eccentric pin sleeve 6. The rotating head is used to quickly and accurately rotate the eccentric pin sleeve 6 according to the lifting requirements, enabling the operator to easily rotate the eccentric pin sleeve 6 to the desired position.

[0027] As another specific embodiment, the rotating head is a hexagonal head. The hexagonal head is a commonly used rotating structure, which can conveniently select a wrench to match it, and can provide multiple acting opposite surfaces, and the wrench can be assembled from multiple angles, which is convenient to use. The rotating head is arranged on one side of the lug body, so that the angle of the eccentric pin sleeve 6 can be adjusted from the outside.

[0028] As another specific embodiment, a positioning pin 2 is further provided on the connecting platform. The upper part of the positioning pin 2 is arranged inside the connecting platform. The lower part of the positioning pin passes through the connecting platform and is arranged inside the top cover. The presence of the positioning pin 2 helps to fix the positions of the fixing member and the top cover, preventing them from moving due to vibration or external force during the lifting process, and further preventing the clamping bolts 4 from being subjected to shear force, which helps to improve the safety of the lifting operation.

[0029] As another specific embodiment, a counterbore is provided upward at the bottom of the connecting platform, and the positioning pin 2 is arranged inside the counterbore. Axial limitation of the positioning pin 2 can be achieved through the counterbore.

[0030] As another specific embodiment, two of the clamping bolts 4 are provided on each side of the lug body 1, and the positioning pin 2 is arranged between the two clamping bolts 4. This ensures the balance of the structure, helps to maintain the verticality of the lifted object, and prevents the structure from moving due to lateral force during the lifting process.

[0031] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. The present invention extends to any new features or any new combinations disclosed in this specification, and any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the detailed technical features not disclosed in this embodiment, such as specific structures, connection methods, etc., can be obtained by those skilled in the art from the prior art, and the present disclosure embodiment does not make specific limitations thereto.

[0032] In an embodiment of the present utility model, unless otherwise clearly defined and limited, the first feature being “above” or “below” the second feature may include direct contact between the first and second features, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being “above”, “over” and “on top of” the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature.

Claims

1. A hoisting device with position adjustment function, characterized in that: It comprises a lifting ear body (1), the upper part of which is provided with a rotatable eccentric pin sleeve (6), the eccentric pin sleeve (6) having a lifting hole therein, the lifting hole being through-through in the horizontal direction, and the lifting ear body (1) also being provided with a fixing member for limiting the rotation of the eccentric pin sleeve (6); the lower part of the lifting ear body (1) is provided with a connecting platform, the connecting platform being provided with a connecting hole through-through from top to bottom, a locking bolt (4) being passed downwardly through the connecting hole, the connecting hole being a light hole, the diameter of the light hole being larger than the outer diameter of the locking bolt (4), and an eccentric washer (3) being provided between the head of the locking bolt (4) and the connecting platform.

2. The hoisting device with position adjustment function according to claim 1, characterized in that: The fixing member is a tightening bolt (5), and the axis of the tightening bolt (5) is along the radial direction of the outer peripheral surface of the eccentric sleeve.

3. The hoisting device with position adjustment function according to claim 2, characterized in that: The tightening bolt (5) is arranged above the eccentric pin sleeve (6).

4. The hoisting device with position adjustment function according to claim 1, characterized in that: The connection holes include a plurality of connection holes, which are symmetrically distributed on both sides of the lifting ear body (1).

5. The hoisting device with position adjustment function according to claim 1, characterized in that: A rotating head is provided on one side of the eccentric pin sleeve (6).

6. The hoisting device with position adjustment function according to claim 5, characterized in that: The rotating head is a hexagonal head.

7. The hoisting device with position adjustment function according to claim 1, characterized in that: The connecting platform is also provided with a positioning pin (2), and the upper part of the positioning pin (2) is arranged inside the connecting platform.

8. The hoisting device with position adjustment function according to claim 7, characterized in that: The bottom of the connecting platform is provided with a countersunk hole arranged upward, and the positioning pin (2) is arranged in the countersunk hole.

9. The hoisting device with position adjustment function according to claim 8, characterized in that: Two engaging bolts (4) are provided on each side of the lifting ear body (1), and the positioning pin (2) is provided between the two engaging bolts (4).

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