Hoisting device for top cover of hydroelectric generator set

Abstract

A lifting device for the top cover of a hydro-generator unit includes lifting lugs, a top cover lifting base, and connecting parts. The top cover lifting base has symmetrical screw holes, and the lifting lugs are trapezoidal in shape with transverse lifting holes, forming an integral structure with the top cover lifting base. The connecting parts include a screw head and a screw rod. The screw head is embedded in the groove of the top cover lifting base, and the screw rod mates with the connecting hole of the top cover. The lifting holes are perpendicular to the axis of the connecting parts, and multiple lifting holes are symmetrically distributed along the circumference of the top cover. This achieves a stable assembly with the top cover, ensures efficient transmission of lifting force, and improves lifting stability and safety.

Description

Technical Field

[0001] This utility model belongs to the field of hydro-generator operation and maintenance technology, and relates to a hydro-generator top cover lifting device. Background Technology

[0002] During the installation and maintenance of hydro-generator units, the top cover is an important component. Due to its large weight and complex structure, it requires extremely high stability, reliability and installation adaptability of the lifting device. However, the existing devices used for lifting the top cover of hydro-generator units have many shortcomings: (1) The common lifting method is to directly connect the simple hook and rope to the top cover. This method is not only difficult to achieve accurate positioning and stable lifting of the top cover, but also prone to shaking and tilting of the top cover during the lifting process due to unstable connection, which may even cause damage to the top cover or surrounding equipment, posing a great safety hazard. (2) Existing devices often cannot be conveniently and stably assembled with the connection holes of the top cover. The connection strength is insufficient, and it is easy to loosen or fall off when bearing the weight of the top cover. It is difficult to ensure that the lifting force is applied to the top cover evenly and efficiently, which affects the efficiency and safety of the lifting operation. Summary of the Invention

[0003] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a lifting device for the top cover of a hydro-generator unit, including a lifting lug plate, a top cover lifting seat, and a connecting member; the top cover lifting seat is symmetrically provided with screw holes; the lifting lug plate is provided with a horizontally opened lifting hole for connecting with lifting equipment; the top cover lifting seat is connected to the lifting lug plate; the connecting member is installed on the end face of the top cover lifting seat and is vertically arranged with the lifting lug plate for connecting with the connecting hole on the top cover of the unit, so as to realize the assembly of the device with the top cover and complete the lifting operation.

[0004] The lifting hole of the lifting lug plate extends horizontally through the lifting lug plate, so that the lifting force can be transmitted to the lifting lug plate in the horizontal direction.

[0005] The aforementioned lifting lug plate and top cover mounting base are an integral structure.

[0006] The connector includes a screw head and a screw rod, with the screw head located at the top of the screw rod, and the screw rod used for threaded connection with the connecting hole on the top cover of the unit.

[0007] The screw head is larger than the screw rod, and the screw head is in contact with the end face of the top cover hanger.

[0008] The lifting lugs are trapezoidal in shape; the top cover mounting base is a plate-like structure that provides a support base for the lifting lugs and connectors.

[0009] The axis of the lifting hole is perpendicular to the axis of the connector, so that the lifting force applied by the lifting equipment is transmitted horizontally through the lifting lug plate.

[0010] The lifting lugs are vertically mounted on the top cover mounting base, and the lifting lugs are provided with horizontally opened lifting holes.

[0011] The device is symmetrically distributed in multiples on the top cover of the unit, and is spaced apart along the circumference of the top cover of the unit.

[0012] The top cover hanger is provided with a groove for engaging with the screw head and a screw hole for engaging with the screw rod. The screw head is embedded in the groove and the screw rod is engaged with the screw hole to ensure a stable assembly of the connector and the top cover hanger.

[0013] The main beneficial effects of this utility model are as follows: By coordinating the lifting lugs, the top cover lifting base, and the connecting parts, the device and the top cover are precisely assembled and stably lifted. At the same time, the trapezoidal structure of the lifting lugs and the horizontally penetrating lifting holes, combined with the integrated connection with the top cover lifting base, enhance the overall structural strength, ensure efficient transmission of lifting force in the horizontal direction, and ensure that multiple devices are symmetrically distributed around the circumference of the top cover, so that the top cover is subjected to uniform force, prevents tilting and deformation, and thus improves the safety, stability, and operational efficiency of lifting the top cover. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 This is a side sectional view of the present invention. Figure 2 This is a top view of the structure of this utility model; Figure 3 This is a schematic diagram of the structure of this utility model when installed with the top cover of the unit; Figure 4 This is a cross-sectional view of section A of the present invention.

[0016] In the figure: 1. Lifting lug plate; 11. Lifting hole; 2. Top cover lifting seat; 21. Screw hole; 3. Connector; 31. Screw head; 32. Detailed Implementation

[0017] like Figures 1-4A lifting device for the top cover of a hydro-generator unit includes a lifting lug plate 1, a top cover lifting seat 2, and a connecting member 3. The top cover lifting seat 2 has symmetrically arranged screw holes 21. The lifting lug plate 1 has a horizontally opened lifting hole 11 for connecting to lifting equipment. The top cover lifting seat 2 is connected to the lifting lug plate 1. The connecting member 3 is installed on the end face of the top cover lifting seat 2 and is vertically arranged with the lifting lug plate 1, for connecting to the connecting hole on the top cover of the unit, so as to realize the assembly of the device with the top cover and complete the lifting operation. The connection to the lifting equipment is achieved through the horizontal lifting hole 11. The top cover lifting seat 2, as an intermediate load-bearing structure, connects the lifting lug plate 1 and the connecting member 3. The connecting member 3 is directly connected to the top cover of the unit, so that the device is stably installed on the top cover of the unit and can be stably lifted.

[0018] Furthermore, the lifting hole 11 of the lifting lug 1 extends horizontally through the lifting lug 1, allowing the lifting force to be transmitted horizontally to the lifting lug 1. The horizontally extending lifting hole 11 of the lifting lug 1 allows the connecting components of the lifting equipment to pass through it horizontally, ensuring that the lifting force is directly transmitted horizontally to the lifting lug 1.

[0019] Furthermore, the lifting lug 1 and the top cover mounting bracket 2 are an integral structure. This allows the lifting force borne by the lifting lug 1 to be directly transmitted to the top cover mounting bracket 2, thereby improving the overall structural strength and deformation resistance of the device.

[0020] Furthermore, the connector 3 includes a screw head 31 and a screw rod 32. The screw head 31 is located at the top of the screw rod 32, and the screw rod 32 is used to connect with the connection hole on the unit's top cover. By connecting the screw rod 32 with the connection hole on the unit's top cover, the device and the top cover can be detachably fixed, making it easy to install and disassemble, thus improving the device's practicality.

[0021] Furthermore, the screw head 31 is larger than the screw rod 32, and the screw head 31 contacts and engages with the end face of the top cover hanger 2. The screw head 31 limits the connection depth of the screw rod 32, ensuring a stable connection between the connector 3 and the top cover, and preventing excessive local stress on the top cover hanger 2, which could lead to deformation.

[0022] Furthermore, the lifting lug 1 is trapezoidal in shape; the top cover mounting base 2 is a plate-like structure, providing an installation support foundation for the lifting lug 1 and the connecting piece 3. The lifting lug 1 and the connecting piece 3 provide a stable installation reference surface, ensuring that the lifting lug 1 and the connecting piece 3 can be precisely assembled in the preset position. At the same time, the plate-like structure itself has good load-bearing capacity, which can evenly distribute the lifting force and ensure the overall structural stability of the device.

[0023] Furthermore, the axis of the lifting hole 11 is perpendicular to the axis of the connecting member 3, so that the lifting force applied by the lifting equipment is transmitted horizontally through the lifting lug 1. The perpendicularity between the axis of the lifting hole 11 and the axis of the connecting member 3 allows the horizontal lifting force to be transmitted to the vertical connecting force, thus improving the stability of the lifting process.

[0024] Furthermore, the lifting lug 1 is vertically mounted on the top cover lifting base 2, and the lifting lug 1 has a horizontally opened lifting hole 11. By vertically mounting the lifting lug 1 on the top cover lifting base 2 and horizontally opening the lifting hole 11, lateral stress caused by the tilting of the lifting lug 1 is avoided, and swaying during lifting is reduced.

[0025] Furthermore, multiple devices are symmetrically distributed on the top cover of the unit, and spaced apart along the circumference of the top cover. By having multiple devices simultaneously apply force from different positions around the circumference of the top cover, the lifting force on the top cover is evenly distributed throughout the entire circumference, avoiding tilting or deformation of the top cover caused by single-point or asymmetrical force, ensuring that the top cover remains horizontal during the lifting process, and guaranteeing the safety and accuracy of the lifting operation.

[0026] Furthermore, the top cover hanger 2 is provided with a groove that mates with the screw head 31, and also with a screw hole 21 that mates with the screw rod 32. The screw head 31 is embedded in the groove and the screw rod 32 is connected to the screw hole 21, so that the connector 3 and the top cover hanger 2 are stably assembled.

[0027] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The embodiments and features described in this application can be arbitrarily combined without conflict. The protection scope of this utility model should be defined as the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. A lifting device for the top cover of a hydro-generator unit, characterized in that: It includes a lifting lug plate (1), a top cover lifting seat (2), and a connector (3); the top cover lifting seat (2) is symmetrically provided with screw holes (21); the lifting lug plate (1) is provided with a horizontally opened lifting hole (11) for connecting with lifting equipment; the top cover lifting seat (2) is connected to the lifting lug plate (1); the connector (3) is installed on the end face of the top cover lifting seat (2) and is vertically set with the lifting lug plate (1) for connecting with the connection hole on the top cover of the unit, so as to realize the assembly of the device with the top cover and complete the lifting operation.

2. The hydro-generator unit top cover lifting device according to claim 1, characterized in that: The lifting hole (11) of the lifting lug plate (1) extends horizontally through the lifting lug plate (1), so that the lifting force can be transmitted to the lifting lug plate (1) in the horizontal direction.

3. The hydro-generator set top cover lifting device according to claim 1, characterized in that: The aforementioned lifting lug plate (1) and the top cover lifting seat (2) are an integral structure.

4. The hydro-generator set top cover lifting device according to claim 1, characterized in that: The connector (3) includes a screw head (31) and a screw rod (32), the screw head (31) being located at the top of the screw rod (32), and the screw rod (32) being used for threaded connection with the connecting hole on the top cover of the unit.

5. The hydro-generator set top cover lifting device according to claim 4, characterized in that: The size of the screw head (31) is larger than the size of the screw (32), and the screw head (31) is in contact with the end face of the top cover hanger (2).

6. The hydro-generator unit top cover lifting device according to claim 1, characterized in that: The lifting lug plate (1) is trapezoidal in shape; the top cover mounting base (2) is a plate structure, providing an installation support base for the lifting lug plate (1) and the connector (3).

7. The hydro-generator set top cover lifting device according to claim 2, characterized in that: The axis of the lifting hole (11) is perpendicular to the axis of the connector (3), so that the lifting force applied by the lifting equipment is transmitted horizontally through the lifting lug (1).

8. The hydro-generator set top cover lifting device according to claim 7, characterized in that: The lifting lug plate (1) is vertically mounted on the top cover lifting seat (2), and the lifting lug plate (1) is provided with a horizontally opened lifting hole (11).

9. The hydro-generator set top cover lifting device according to claim 1, characterized in that: The device is symmetrically distributed in multiples on the top cover of the unit, and is spaced apart along the circumference of the top cover of the unit.

10. The hydro-generator set top cover lifting device according to claim 1, characterized in that: The top cover hanger (2) is provided with a groove that mates with the screw head (31) and a screw hole (21) that mates with the screw rod (32). The screw head (31) is embedded in the groove and the screw rod (32) is connected to the screw hole (21) to ensure the stable assembly of the connector (3) and the top cover hanger (2).

Images