A special lifting tool for the rear guard plate of a slurry pump

Abstract

This utility model relates to the field of lifting equipment technology, and specifically discloses a special lifting tool for the rear guard plate of a slurry pump. The tool includes a special lifting tool, an M20 fault bolt, an M20 nut, and a rear guard plate. The special lifting tool includes a main board with lifting lugs welded to its back. The main board has at least two slotted holes for inserting the M20 nut to secure it to the rear guard plate. The main board has inner and outer diameters of 165mm and 293mm, a length of 780mm, and a thickness of 20mm. The two slotted holes are located at the top and bottom of the main board, respectively, and each slot measures 22mm × 60mm. The rear guard plate has an inner hole for inserting the M20 fault bolt. The M20 nut is used to lock the M20 fault bolt passing through the slotted hole and the inner hole of the rear guard plate. This device enables precise positioning of the rear guard plate and the pump body bolt holes, significantly improving the maintenance efficiency of the slurry pump's rear guard plate and solving the problems of difficult and time-consuming alignment during traditional disassembly and assembly processes.

Description

Technical Field

[0001] This utility model relates to the field of lifting tool technology, and in particular to a special lifting tool for the rear guard plate of a slurry pump. Background Technology

[0002] The AH type slurry pump, as a cantilever, horizontal centrifugal slurry pump, is widely used in metal beneficiation plants and other scenarios to transport slurry with a slurry concentration of less than 65%. Its flow parts (including the rear guard plate, etc.) are in direct contact with abrasive materials, and their service life is closely related to the severity of working conditions and the abrasive characteristics of the materials. When the pump performance cannot meet the requirements of the equipment, the flow parts need to be replaced regularly. Among them, the disassembly and assembly of the rear guard plate is a common and critical maintenance procedure.

[0003] However, in the existing rear skid plate disassembly and assembly process, due to the bulky shape and structure of the rear skid plate, traditional disassembly and assembly methods mostly rely on manual handling and alignment, which has the following problems:

[0004] 1. The bolt holes between the rear guard plate and the pump body are difficult to position, requiring repeated adjustments, resulting in low maintenance efficiency;

[0005] 2. Manual operation is labor-intensive, and the rear guard plate is prone to shaking and falling off during the hoisting process, posing a significant safety hazard. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a special lifting tool for the rear guard plate of a slurry pump, which solves the technical problem of difficulty in positioning the bolt holes between the rear guard plate and the pump body, requiring repeated adjustments and resulting in low maintenance efficiency.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A special lifting tool for the rear guard plate of a slurry pump includes a special lifting tool, an M20 abnormal bolt, an M20 nut, and a rear guard plate. The special lifting tool includes a main board with lifting lugs welded to the back of the main board. The main board has at least two slotted holes for inserting the M20 nut to fix the main board to the rear guard plate, thereby improving the efficiency and safety of the rear guard plate assembly and disassembly.

[0009] Preferably, the inner and outer diameters of the main board are 165mm and 293mm, the length of the main board is 780mm, the thickness is 20mm, and the two slot-shaped holes are respectively opened on the upper and lower parts of the main board. The size of each slot-shaped hole is 22mm×60mm to ensure the structural stability during hoisting.

[0010] Preferably, the rear guard plate has an inner hole to facilitate the insertion of an M20 abnormal bolt. The M20 nut is used to lock the M20 abnormal bolt that passes through the slotted hole and the inner hole of the rear guard plate, which significantly improves the stability and safety of the disassembly and assembly operation and reduces the risk of accidents caused by loose connections.

[0011] Preferably, the special lifting tool can adjust the structural parameters of the main board according to the shape and weight of different models of rear guard plates, which expands the applicability of the lifting tool and improves the practicality of the equipment.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] First, this equipment can achieve precise positioning of the rear guard plate and the bolt holes of the pump body, greatly improving the maintenance efficiency of the rear guard plate of the slurry pump and solving the problems of difficult alignment and time-consuming process in traditional disassembly and assembly.

[0014] Second, this equipment can significantly improve operational safety. The rigid connection structure stabilizes the rear guard plate during hoisting, while the use of a crane reduces manual handling, effectively reducing the labor intensity of maintenance workers. It is especially suitable for the disassembly and assembly of heavy rear guard plates for large slurry pumps. Attached Figure Description

[0015] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0016] Figure 1 This is a schematic diagram of the structural shape of the present invention;

[0017] Figure 2 This is a schematic diagram of the lifting tool used for disassembling and assembling the rear guard plate of the slurry pump according to this utility model.

[0018] Illustration: 1. Special lifting tool; 2. M20 abnormal bolt; 3. M20 nut; 4. Rear guard plate. Detailed Implementation

[0019] This application provides a special lifting tool for the rear guard plate of a slurry pump, which effectively solves the problem of difficult positioning of the bolt holes between the rear guard plate and the pump body, requiring repeated adjustments and resulting in low maintenance efficiency. This equipment can achieve precise positioning of the bolt holes between the rear guard plate and the pump body, greatly improving the maintenance efficiency of the rear guard plate of the slurry pump and solving the problems of difficult alignment and time-consuming process in traditional disassembly and assembly. Example

[0020] like Figure 1 and Figure 2As shown, the technical solution in this application embodiment effectively solves the technical problem of difficult positioning of the bolt holes between the rear guard plate and the pump body, requiring repeated adjustments and resulting in low maintenance efficiency. The overall idea is as follows: A special lifting tool for the rear guard plate of a slurry pump includes a special lifting tool 1, an M20 abnormal bolt 2, an M20 nut 3, and a rear guard plate 4. The special lifting tool 1 includes a main board with lifting lugs welded to the back. At least two slotted holes are opened on the main board. The slotted holes are used to pass through the M20 nut 3 to fix the main board and the rear guard plate 4, realizing a stable connection between the special lifting tool and the rear guard plate. The lifting lugs can transmit lifting force to ensure smooth lifting. The slotted holes provide adjustment space for the connection, solving the problems of difficult positioning and unstable lifting of the rear guard plate in traditional disassembly and assembly, and improving the efficiency and safety of rear guard plate disassembly and assembly.

[0021] The inner and outer diameters of the main board are 165mm and 293mm, the length of the main board is 780mm, and the thickness is 20mm. Two slot-shaped holes are respectively opened on the upper and lower parts of the main board. The size of each slot-shaped hole is 22mm×60mm, which can ensure that the main board has sufficient rigidity to support the weight of the rear guard plate, optimize the alignment efficiency between the rear guard plate and the pump body, and ensure the structural stability during the hoisting process.

[0022] The rear guard plate 4 has an inner hole to allow the M20 abnormal bolt 2 to pass through. The M20 nut 3 is used to lock the M20 abnormal bolt 2 that passes through the slotted hole and the inner hole of the rear guard plate 4. This can firmly fix the lifting device and the rear guard plate as a whole, preventing relative displacement or detachment of the two during the lifting process. This significantly improves the stability and safety of the disassembly and assembly operations and reduces the risk of accidents caused by loose connections.

[0023] The special lifting tool 1 can adjust the structural parameters of the main board according to the shape and weight of different models of rear guard plates 4. By adjusting the structural parameters of the main board to adapt to the shape and weight of different models of rear guard plates, the special lifting tool breaks through the dependence on a single model, enhances the versatility of the lifting tool, and makes it applicable to the disassembly and assembly of rear guard plates of various slurry pumps, expands the application range of the lifting tool, and improves the practicality of the equipment.

[0024] To address the problems existing in the prior art, this utility model provides a special lifting tool for the rear guard plate of a slurry pump. This device can achieve precise positioning of the rear guard plate and the bolt holes of the pump body, greatly improving the maintenance efficiency of the rear guard plate of the slurry pump and solving the problems of difficult alignment and time-consuming process in traditional disassembly and assembly.

[0025] in:

[0026] Working principle:

[0027] The first step is to place the rear guard plate 4 vertically on the ground. Using the two slotted holes on the main board of the special lifting tool 1, the M20 abnormal bolt 2 is passed through the slotted hole and the inner hole of the rear guard plate 4. The adjustment space of the slotted hole is adapted to the position of the inner hole of the rear guard plate 4, providing a basis for the tight fit between the two.

[0028] The second step is to tighten the M20 abnormal bolt 2, which passes through the slotted hole and the inner hole of the rear guard plate 4, by using the M20 nut 3, so that the main board of the special lifting tool 1 and the rear guard plate 4 are tightly fitted together to form a rigid connection, which avoids relative displacement between the two during the lifting process and ensures the stability of the lifting.

[0029] The third step is to pass the wire rope through the lifting lug welded on the back of the main board and suspend it on the crane. The lifting force of the crane is transmitted to the main board through the lifting lug, and then evenly transmitted to the rear guard plate 4 fixed to it by the main board. The rigid structure of the main board ensures the balance of force and realizes the smooth lifting of the rear guard plate 4.

[0030] The fourth step involves moving the crane to bring the lifting device and the fixed rear guard plate 4 closer to the pump body. By using the space reserved in the slotted hole, the relative position of the rear guard plate 4 and the pump body is finely adjusted so that the bolt holes of the rear guard plate 4 are precisely aligned with the bolt holes of the pump body, thus solving the problem of difficult manual alignment.

[0031] Fifth step: After the rear guard plate 4 is initially aligned with the pump body and the nuts are tightened (but not fully tightened), remove the M20 abnormal bolt 2 and M20 nut 3 to separate the special lifting tool 1 from the rear guard plate 4. Remove the lifting tool to complete the installation of the guard plate 4.

[0032] Step 6: When removing the rear guard plate 4, repeat the above steps in reverse: First, fix the special lifting tool 1 to the rear guard plate 4 with M20 abnormal bolts 2 and M20 nuts 3, use a crane to smoothly move the rear guard plate 4 away from the pump body, and then remove the connection between the lifting tool and the rear guard plate 4 to complete the removal operation.

[0033] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A special lifting tool for the rear guard plate of a slurry pump, characterized in that, It includes a special lifting tool (1), an M20 abnormal bolt (2), an M20 nut (3) and a rear guard plate (4). The special lifting tool (1) includes a main board with a lifting lug welded to the back. The main board has at least two slotted holes for inserting the M20 nut (3) to fix the main board to the rear guard plate (4).

2. The special lifting tool for the rear guard plate of a slurry pump as described in claim 1, characterized in that, The motherboard has an inner and outer diameter of 165mm and 293mm, a length of 780mm, and a thickness of 20mm.

3. The special lifting tool for the rear guard plate of a slurry pump as described in claim 1, characterized in that, The two slot-shaped holes are respectively opened on the upper and lower parts of the motherboard, and the size of each slot-shaped hole is 22mm×60mm.

4. A special lifting tool for the rear guard plate of a slurry pump as described in claim 1, characterized in that, The rear guard plate (4) has an inner hole to facilitate the insertion of the M20 abnormal bolt (2).

5. A special lifting tool for the rear guard plate of a slurry pump as described in claim 4, characterized in that, The M20 nut (3) is used to lock the M20 abnormal bolt (2) through the slotted hole and the inner hole of the rear guard plate (4).

6. A special lifting tool for the rear guard plate of a slurry pump as described in claim 1, characterized in that, The special lifting tool (1) can adjust the structural parameters of the main board according to the shape and weight of the rear guard plate (4) of different models.

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