Drilling device for machining casting pump body of hydroelectric generating set

Abstract

The utility model relates to a hydroelectric generating set casting pump body machining drilling device which comprises a to-be-drilled pump body, a positioning plate and a drilling mechanism, the positioning plate is used for positioning a to-be-drilled pump body, the drilling mechanism is used for drilling of the to-be-drilled pump body, a positioning hole is formed in the positioning plate, and the drilling mechanism is used for drilling of the to-be-drilled pump body. The drilling mechanism comprises a servo motor, a rotating shaft of the servo motor is fixedly connected with a gear cover, the gear cover is meshed with a rotating gear, the rotating gear is fixedly connected with a rotating bearing, a drill bit is arranged at the axial position of the rotating bearing, and when drilling operation starts, the servo motor is started to drive the pump body to be drilled to rotate. A rotating shaft of the servo motor drives the gear cover to rotate, the gear cover drives the rotating gear meshed with the gear cover to rotate, the rotating gear rotates to drive the rotating bearing fixedly connected with the rotating gear to rotate, the rotating bearing rotates to drive the drill bit arranged at the axial position of the rotating bearing to rotate, and the drill bit conducts drilling operation on a to-be-drilled pump body.

Description

Technical Field

[0001] The utility model relates to the field of pump body processing, in particular to a drilling device for machining a cast pump body of a hydroelectric generating unit. Background Technique

[0002] A hydroelectric generating unit is a key device in a hydropower station. As one of the core components, its pump body plays a crucial role in the overall power generation efficiency and stability. Traditional pump body processing methods often rely on manual operations or simple mechanical assistance. These methods have problems such as low efficiency, low machining accuracy, and poor repeatability. With the acceleration of the industrialization process and the increasing requirements for energy efficiency, higher requirements are put forward for the accuracy and efficiency of pump body processing. As shown in Figure 8 the pump body of the hydroelectric generating unit. The blank of the pump body is made by a casting process. After the pump body is cast and formed, machining treatment is required. One of the machining processes is to open a flow channel hole on the side wall of the pump body end.

[0003] The defects of the current existing technology are as follows: Traditional processing methods rely on manual operations, which are not only inefficient, but also difficult to guarantee machining accuracy and consistency. Simple mechanical assistance may not be able to meet the machining requirements of high precision and complex shapes, resulting in unstable machining quality. Due to the limitations of manual and simple mechanical assistance, the machining accuracy of the pump body may not meet the high standards of modern industry, affecting its performance and service life. The repeatability of manual operations and simple mechanical assistance is poor, and the results of each machining may be different, which will affect the consistency and reliability of the pump body. Manual operations and simple mechanical assistance are less efficient and cannot meet the needs of large-scale production, restricting the construction and expansion of hydropower stations. Content of the Utility Model

[0004] In view of the above problems, a drilling device for machining a cast pump body of a hydroelectric generating unit is provided, including a pump body to be drilled, a positioning plate, and a drilling mechanism. The positioning plate is used to position the body to be drilled, and the drilling mechanism is used to drill a flow channel hole on the pump body to be drilled. The positioning plate is provided with positioning holes, which are used to confirm the position of the pump body to be drilled on the positioning plate. The drilling mechanism includes a servo motor. The rotating shaft of the servo motor is fixedly connected with a gear cover. The gear cover meshes with a rotating gear. The rotating gear is fixedly connected with a rotating bearing. A drill bit is provided at the axial position of the rotating bearing. When the drilling operation starts, the servo motor is started. The rotating shaft of the servo motor drives the gear cover to rotate. The gear cover drives the rotating gear meshing with it to rotate. The rotation of the rotating gear drives the rotating bearing fixedly connected with it to rotate. The rotation of the rotating bearing drives the drill bit provided at its axial position to rotate. The drill bit performs a drilling operation on the pump body to be drilled.

[0005] Preferably, a support mechanism is provided below the drilling mechanism. The support mechanism includes a bracket provided on the positioning plate. The bracket is provided with a through hole, and the rotary bearing is arranged in the through hole, and the bearing is rotatably connected to the through hole.

[0006] Preferably, a limiting block is provided on the inner wall of the rotary bearing, and a limiting groove matching the limiting block is provided on the outer wall of the drill bit. The drill bit is slidably connected to the rotary bearing. Through the arrangement of the limiting block and the limiting groove, while the drill bit moves along the axial position of the bearing, it can also rotate together with the rotary bearing.

[0007] Preferably, a driving mechanism is provided on the positioning plate. The driving mechanism includes a cylinder, a driving block, a limiting hole and a limiting rod. The cylinder is connected with a telescopic rod, and the telescopic rod is fixedly connected to the driving block. The driving block is used to drive the drill bit to drill the pump body to be drilled along the axial direction of the through hole. A limiting hole is opened on the driving block, and a limiting rod is inserted into the limiting hole. The limiting rod is fixedly connected to the bracket.

[0008] Preferably, a guiding inclined surface is provided on the driving block, and a guiding sphere is provided at the contact part between the drill bit and the driving block. When the driving block moves along the axial direction of the limiting rod under the push of the cylinder, the guiding sphere drives the drill bit to drill the pump body to be drilled along the axial position of the through hole under the pressure of the guiding inclined surface.

[0009] Preferably, a return spring is provided on the limiting rod and the drill bit, and the return spring is used for the return of the driving block and the drill bit.

[0010] The beneficial effects of the present utility model compared with the prior art are as follows:

[0011] 1. Through the precise design of the positioning plate and positioning holes of the present utility model, the accurate positioning of the pump body to be drilled is ensured, thereby improving the accuracy and consistency of drilling. The precise control of the servo motor further ensures the repeatability and reliability during the drilling process, reduces the errors of manual operation, and improves the quality and efficiency of the entire drilling operation.

[0012] 2. The design of the support mechanism of the present utility model provides stable support for the drill bit through the rotational connection between the bearing and the through hole, ensuring the stability and accuracy during the drilling process. At the same time, the combined use of the guiding inclined surface and the guiding sphere effectively reduces the deviation and vibration of the drill bit during the drilling process, further improving the accuracy and surface finish of the drilling operation.

[0013] 3. The design of the driving mechanism and the return spring of the present utility model realizes the precise advancement and rapid reset of the drill bit. The setting of the limiting hole and the limiting rod on the driving block ensures the accuracy and safety of the drill bit during axial movement. The use of the return spring enables the drill bit and the driving block to quickly return to the initial position after drilling, improving the working efficiency of the drilling device and reducing the risk of equipment failure. Brief Description of the Drawings

[0014] Figure 1 is a three-dimensional schematic diagram during the machining of a drilling device for machining the casting pump body of a water conservancy generator set.

[0015] Figure 2 is an exploded view of the drilling mechanism of a drilling device for machining the casting pump body of a water conservancy generator set.

[0016] Figure 3 is a drilling device for machining the casting pump body of a water conservancy generator set Figure 2 partial enlarged view at A in

[0017] Figure 4 is a drilling device for machining the casting pump body of a water conservancy generator set Figure 2 partial enlarged view at B in

[0018] Figure 5 is a three-dimensional view of the driving mechanism of a drilling device for machining the casting pump body of a water conservancy generator set.

[0019] Figure 6 is a disassembled view of the driving mechanism of a drilling device for machining the casting pump body of a water conservancy generator set.

[0020] Figure 7 is a drilling device for machining the casting pump body of a water conservancy generator set Figure 6 partial enlarged view at C in

[0021] Figure 8 is the pump body to be drilled of a drilling device for machining the casting pump body of a water conservancy generator set

[0022] In the figure, the reference numerals are: 1. Pump body to be drilled; 2. Positioning plate; 21. Positioning hole; 3. Drilling mechanism; 31. Servo motor; 32. Rotating shaft; 33. Gear cover; 34. Rotating gear; 35. Rotating bearing; 351. Limiting block; 36. Drill bit; 361. Limiting groove; 362. Guide sphere; 4. Support mechanism; 41. Bracket; 42. Through hole; 5. Driving mechanism; 51. Cylinder; 52. Telescopic rod; 53. Driving block; 531. Guide inclined plane; 54. Limiting hole; 55. Limiting rod; 6. Return spring; 7. Flow passage hole. Detailed Description of the Preferred Embodiment

[0023] To further understand the features, technical means, specific purposes, and functions achieved by the present utility model, the following provides a more detailed description of the present utility model in conjunction with the accompanying drawings and specific embodiments.

[0024] Refer to Figures 1 - 8 : A drilling device for machining a casting pump body of a water conservancy generating unit, comprising a pump body 1 to be drilled, a positioning plate 2, and a drilling mechanism 3. The positioning plate 2 is used to position the body to be drilled, and the drilling mechanism 3 is used to drill a flow channel hole 7 in the pump body 1 to be drilled. The positioning plate 2 is provided with a positioning hole 21, and the positioning hole 21 is used to confirm the position of the pump body 1 to be drilled on the positioning plate 2. The drilling mechanism 3 includes a servo motor 31. A rotating shaft 32 of the servo motor 31 is fixedly connected to a gear cover 33. The gear cover 33 meshes with a rotating gear 34. The rotating gear 34 is fixedly connected to a rotating bearing 35. A drill bit 36 is provided at the axial position of the rotating bearing 35. When the drilling operation starts, the servo motor 31 is started. The rotating shaft 32 of the servo motor 31 drives the gear cover 33 to rotate. The gear cover 33 drives the rotating gear 34 meshing with it to rotate. The rotation of the rotating gear 34 drives the rotating bearing 35 fixedly connected to it to rotate. The rotation of the rotating bearing 35 drives the drill bit 36 provided at its axial position to rotate. The drill bit 36 performs a drilling operation on the pump body 1 to be drilled.

[0025] First, the pump body 1 to be drilled is precisely positioned through the positioning hole 21 on the positioning plate 2 to ensure its correct position. Next, the servo motor 31 in the drilling mechanism 3 is started. The rotating shaft 32 of the servo motor 31 is fixedly connected to the gear cover 33, so that when the servo motor 31 rotates, the gear cover 33 also rotates accordingly. The gear cover 33 meshes with the rotating gear 34, so the rotation of the gear cover 33 drives the rotating gear 34 to rotate. The rotating gear 34 is fixedly connected to the rotating bearing 35, and the rotation of the rotating gear 34 further drives the rotating bearing 35 to rotate. Since the drill bit 36 is provided at the axial position of the rotating bearing 35, the rotation of the rotating bearing 35 causes the drill bit 36 to rotate as well. In this way, the drill bit 36 can perform a drilling operation on the accurately positioned pump body 1 to be drilled. During the whole process, the precise control of the servo motor 31 ensures the accuracy and repeatability of the drilling.

[0026] Refer to Figures 1 - 4 : A support mechanism 4 is provided below the drilling mechanism 3. The support mechanism 4 includes a bracket 41 provided on the positioning plate 2. The bracket 41 is provided with a through hole 42. The rotating bearing 35 is arranged in the through hole 42, and the bearing is rotatably connected to the through hole 42.

[0027] The support mechanism 4 is located below the drilling mechanism 3 and is composed of the bracket 41 on the positioning plate 2. A through hole 42 is provided on the bracket 41, and a bearing is installed in the through hole 42 to achieve the rotational connection between the bearing and the through hole 42. In this way, when the drilling mechanism 3 performs drilling operations, the bearing can rotate freely in the through hole 42. The support mechanism 4 provides stable support for the drill bit 36, ensuring the accuracy and stability during the drilling process, and at the same time allowing the drill bit 36 to perform necessary rotational movements during drilling to meet the drilling requirements of the pump body.

[0028] Refer to Figures 1 - 4 : A limiting block 351 is provided on the inner wall of the rotating bearing 35, and a limiting groove 361 matching the limiting block 351 is provided on the outer wall of the drill bit 36. The drill bit 36 is slidably connected to the rotating bearing 35. Through the arrangement of the limiting block 351 and the limiting groove 361, while the drill bit 36 moves along the axial position of the bearing, it can also rotate together with the rotating bearing 35.

[0029] In the drilling device for machining the casting pump body of a water conservancy generating unit, a limiting block 351 is provided on the inner wall of the rotating bearing 35, and a limiting groove 361 matching these limiting blocks 351 is provided on the outer wall of the drill bit 36. Such a design enables a sliding connection to be formed between the drill bit 36 and the rotating bearing 35. When the drilling operation is carried out, the drill bit 36 can move in the axial direction of the bearing. At the same time, the cooperation between the limiting block 351 and the limiting groove 361 ensures that the drill bit 36 can maintain synchronous rotation with the rotating bearing 35 during the movement, thereby realizing precise drilling operations. This design not only allows the drill bit 36 to perform necessary axial movement to meet the drilling requirements at different depths, but also ensures the stability and accuracy of the drill bit 36 during rotation.

[0030] Refer to Figures 5 - 7 : A driving mechanism 5 is provided on the positioning plate 2. The driving mechanism 5 includes a cylinder 51, a driving block 53, a limiting hole 54, and a limiting rod 55. The cylinder 51 is connected with a telescopic rod 52, and the telescopic rod 52 is fixedly connected to the driving block 53. The driving block 53 is used to drive the drill bit 36 along the axial direction of the through hole 42 to perform drilling operations on the pump body 1 to be drilled. A limiting hole 54 is opened on the driving block 53, and a limiting rod 55 is inserted into the limiting hole 54. The limiting rod 55 is fixedly connected to the bracket 41.

[0031] In the drilling device for machining the casting pump body of a hydraulic generator set, a driving mechanism 5 is provided on the positioning plate 2. The driving mechanism 5 is composed of a cylinder 51, a driving block 53, a limiting hole 54 and a limiting rod 55. The cylinder 51 is connected to the driving block 53 through a telescopic rod 52. The telescopic movement of the telescopic rod 52 is controlled by the cylinder 51. The driving block 53 is responsible for transmitting the force of the cylinder 51 to the drill bit 36. When the cylinder 51 pushes the telescopic rod 52, the telescopic rod 52 drives the driving block 53 to move. The driving block 53 drives the drill bit 36 to move along the axial direction of the through hole 42, and then pushes the drill bit 36 to drill the pump body 1 to be drilled. A limiting hole 54 is provided on the driving block 53, and a limiting rod 55 is inserted into the limiting hole 54. The limiting rod 55 is fixedly connected to the bracket 41 to ensure that the driving block 53 does not exceed the predetermined range during the movement, thereby ensuring the accuracy and safety of drilling. The entire driving mechanism 5 realizes the precise propulsion and position limitation of the drill bit 36 through the control of the cylinder 51, ensuring the high efficiency and stability of the drilling operation.

[0032] Refer to Figures 5 - 7 : A guiding inclined surface 531 is provided on the driving block 53, and a guiding sphere 362 is provided at the contact part between the drill bit 36 and the driving block 53. When the driving block 53 moves along the axial direction of the limiting rod 55 under the push of the cylinder 51, the guiding sphere 362 drives the drill bit 36 to drill the pump body 1 to be drilled along the axial position of the through hole 42 under the oppression of the guiding inclined surface 531.

[0033] In the drilling device for machining the casting pump body of a hydraulic generator set, a guiding inclined surface 531 is provided on the driving block 53, and a guiding sphere 362 is provided at the contact part between the drill bit 36 and the driving block 53. When the cylinder 51 pushes the driving block 53 to move along the axial direction of the limiting rod 55, the guiding sphere 362 can smoothly drive the drill bit 36 to drill the pump body 1 to be drilled along the axial position of the through hole 42 under the guidance and oppression of the guiding inclined surface 531. This design ensures the stability and guiding property of the drill bit 36 during the movement, improves the accuracy and efficiency of drilling. The combined use of the guiding inclined surface 531 and the guiding sphere 362 reduces the deviation and vibration of the drill bit 36 during drilling, thereby improving the performance of the entire drilling device and the quality of the drilling operation.

[0034] Refer to Figures 1 - 4 : A return spring 6 is provided on the limiting rod 55 and the drill bit 36. The return spring 6 is used for the return of the driving block 53 and the drill bit 36.

[0035] In the drilling device for machining the cast pump body of a hydraulic generator set, return springs 6 are respectively installed on the limit rod 55 and the drill bit 36. The main function of these return springs 6 is to provide sufficient elastic force to enable the drive block 53 and the drill bit 36 to return to their initial positions after the drilling operation is completed. When the cylinder 51 pushes the drive block 53 to complete the drilling action, the return spring 6 is compressed and stores energy. Once the drilling action ends and the cylinder 51 stops pushing, the return spring 6 releases the energy and pushes the drive block 53 and the drill bit 36 along the original movement trajectory back to the starting position to prepare for the next drilling operation. This design not only improves the working efficiency of the drilling device but also helps to reduce equipment failures or operation errors caused by the failure of the drill bit 36 and the drive block 53 to return in time.

[0036] The above embodiments only represent one or several implementation manners of the present utility model, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the appended claims.

Claims

1. A drilling device for machining a casting pump body of a hydraulic generator set, characterized in that: The invention comprises a pump body (1) to be drilled, a positioning plate (2) and a drilling mechanism (3), wherein the positioning plate (2) is used to position the pump body to be drilled, and the drilling mechanism (3) is used to drill a flow channel hole (7) on the pump body (1) to be drilled. The positioning plate (2) is provided with a positioning hole (21), and the positioning hole (21) is used to confirm the position of the pump body (1) to be drilled on the positioning plate (2). The drilling mechanism (3) comprises a servo motor (31), and a rotating shaft (32) of the servo motor (31) is fixedly connected to a gear cover (33), and the gear cover (33) is meshed with a rotating gear (34). The movable gear (34) is fixedly connected to the rotating bearing (35), and a drill bit (36) is arranged at the axial position of the rotating bearing (35). When the drilling operation starts, the servo motor (31) is started, and the rotating shaft (32) of the servo motor (31) drives the gear cover (33) to rotate, and the gear cover (33) drives the rotating gear (34) meshing therewith to rotate, and the rotating gear (34) rotates to drive the rotating bearing (35) fixedly connected thereto to rotate, and the rotating bearing (35) rotates to drive the drill bit (36) arranged at its axial position to rotate, and the drill bit (36) performs a drilling operation on the pump body (1) to be drilled.

2. A drilling device for machining a casting pump body of a hydraulic generator set according to claim 1, characterized in that: A support mechanism (4) is provided below the drilling mechanism (3), and the support mechanism (4) comprises a bracket (41) provided on the positioning plate (2), a through hole (42) is provided on the bracket (41), and the rotating bearing (35) is provided in the through hole (42), and the bearing and the through hole (42) are rotatably connected.

3. A drilling device for machining a casting pump body of a hydraulic generator set according to claim 2, characterized in that: The inner wall of the rotating bearing (35) is provided with a limit block (351), and the outer wall of the drill bit (36) is provided with a limit groove (361) matching the limit block (351). The drill bit (36) and the rotating bearing (35) are slidably connected. Through the arrangement of the limit block (351) and the limit groove (361), the drill bit (36) can move along the axial position of the bearing and can also rotate together with the rotating bearing (35).

4. A drilling device for machining a casting pump body of a hydraulic generator set according to claim 2, characterized in that: The positioning plate (2) is provided with a driving mechanism (5), the driving mechanism (5) comprising a cylinder (51), a driving block (53), a limiting hole (54) and a limiting rod (55); the cylinder (51) is connected with a telescopic rod (52); the telescopic rod (52) is fixedly connected to the driving block (53); the driving block (53) is used to drive the drill bit (36) to drill along the axial direction of the through hole (42) toward the pump body (1) to be drilled; the driving block (53) is provided with a limiting hole (54); a limiting rod (55) is inserted into the limiting hole (54); and the limiting rod (55) is fixedly connected to the bracket (41).

5. A drilling device for machining a casting pump body of a hydraulic generator set according to claim 4, characterized in that: The driving block (53) is provided with a guiding inclined surface (531), and a guiding ball (362) is provided at the contact portion between the drill bit (36) and the driving block (53). When the driving block (53) moves along the axial direction of the limit rod (55) under the push of the cylinder (51), the guiding ball (362) drives the drill bit (36) to perform a drilling operation along the axial position of the through hole (42) toward the pump body (1) to be drilled under the pressure of the guiding inclined surface (531).

6. A drilling device for machining a casting pump body of a hydraulic generator set according to claim 4, characterized in that: The limiting rod (55) and the drill bit (36) are provided with a reset spring (6), and the reset spring (6) is used for resetting the driving block (53) and the drill bit (36).

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