Multi-station adjustable drilling device for large-diameter valve body

Abstract

The invention relates to the technical field of multi-station adjustable drilling, in particular to a multi-station adjustable drilling device for a large-diameter valve body, which comprises a machine tool, a motor and an outer shell are respectively fixed on the machine tool, the outer shell is adaptively connected with an inner shell, and the inner shell is adaptively connected with a lower disc; a main bevel gear is adaptively mounted on an output shaft of the motor body, the main bevel gear adaptively drives a horizontal shaft rod mounted on the upper surface of the inner shell through a fixing seat A, the horizontal shaft rod drives a vertical shaft rod, the vertical shaft rod drives a gear to rotate through a lower gear, the gear is fixed and is adaptive to a drill rod, and the drill rod drives a drill bit to perform valve body drilling operation; according to the device, the drilling efficiency is greatly improved, and the labor intensity of operators is reduced.

Description

Technical Field

[0001] This invention relates to the field of multi-position adjustable drilling technology, and in particular to a multi-position adjustable drilling device for large-diameter valve bodies. Background Technology

[0002] Hole machining is the most common machining method for processing mechanical parts. Existing traditional drilling methods mostly use a single drill bit to process holes sequentially in a certain order. This drilling method involves a relatively large workload for the operator and is prone to operator fatigue, which can easily lead to missed or incorrect drilling. During the machining process, frequent re-drilling and positioning are required, resulting in positioning errors and low accuracy of repeated drilling.

[0003] Large-diameter valve bodies often have numerous holes. Currently, most companies use ordinary radial drilling machines with drill templates for positioning when machining these holes. This method is time-consuming and inefficient. Furthermore, due to manual operation, multiple positioning steps are required during machining, making it difficult to ensure the holes maintain the same orientation. Manual operation can lead to low hole accuracy in the finished valve body, affecting product quality. While radial drilling machines are general-purpose machine tools for machining holes, their low efficiency and high operator workload make them unsuitable for large-scale line production. Therefore, a multi-drill device is needed for simultaneous machining. This device should be adjustable and capable of multi-station machining.

[0004] In the processing of conventional valves and small-diameter valves, CNC machining has been basically achieved in China, and the machining accuracy and quality can be guaranteed. However, in the processing of large-diameter valve bodies, most domestic manufacturers are still using universal machine tools and ordinary radial drilling machines. These have drawbacks such as low machining accuracy, a large variety and number of special fixtures, difficulty in controlling human factors during processing, and unsuitability for mass production.

[0005] Therefore, this application provides a multi-position adjustable drilling device for large-diameter valve bodies to solve the problems mentioned in the background art. Summary of the Invention

[0006] The purpose of this invention is to provide a multi-position adjustable drilling device for large-diameter valve bodies, which solves the problems of low processing efficiency of existing machine tools, inability to drill in multiple positions, and high labor intensity for operators.

[0007] To solve the above-mentioned technical problems, the present invention provides a multi-position adjustable drilling device for large-diameter valve bodies, including a machine tool, a motor and a housing respectively fixed on the machine tool, the housing adapted to connect to an inner housing, and the inner housing adapted to connect to a lower plate; a main bevel gear is adapted to be installed on the output shaft of the motor body, the main bevel gear is adapted to drive a horizontal shaft mounted on the upper surface of the inner housing through a fixed seat A, the horizontal shaft drives a vertical shaft, the vertical shaft drives a gear to rotate through a lower gear, the middle of the gear is fixed and adapted to a drill rod, and the drill rod drives the drill bit to perform valve body drilling operations.

[0008] A further improvement of the technical solution of the present invention is that: at least two sets of horizontal shafts are symmetrically arranged on the upper surface of the inner shell body, an inner bevel gear is installed at one end of the horizontal shaft body, the inner bevel gear is adapted to the main bevel gear, and an outer bevel gear is installed at the other end of the horizontal shaft body, the outer bevel gear is adapted to mesh with the upper bevel gear; the horizontal shaft body is horizontally installed in the fixed seat A, and the fixed seat A is arranged on the upper surface of the inner shell body.

[0009] A further improvement of the technical solution of the present invention is that: at least two sets of vertical shafts are symmetrically arranged on the upper surface of the inner shell body, the vertical shaft body is vertically installed in the fixed seat, the fixed seat is arranged on the upper surface of the inner shell body, an upper bevel gear is installed on the upper part of the vertical shaft body, and a lower gear is installed on the lower part of the vertical shaft body, and the lower gear meshes with the gear.

[0010] A further improvement of the technical solution of the present invention is that: the horizontal shaft and the vertical shaft are adapted to each other, the body of the horizontal shaft is inserted into the fixed seat A and close to the main bevel gear, while the vertical shaft is inserted into the fixed seat and located on the outside and away from the fixed seat A.

[0011] A further improvement of the technical solution of the present invention is as follows: a fixed seat B is provided on the upper surface of the inner shell body near the outer edge, and an adjusting rod is adapted to be installed in the fixed seat B. The top of the adjusting rod body is a threaded head, and the adjusting rod and the threaded head are integrally formed. The threaded head is adapted to mesh with the central gear disk. The central gear disk is located directly below the main bevel gear and the distance between the two is at least 10cm. A driving gear disk is abutted against the bottom surface of the central gear disk body. The driving gear disk is an inner cavity. The driving gear disk is mounted on the lower plate and rotates through a vertical shaft. The central gear disk and the driving gear disk are integrally formed.

[0012] A further improvement of the technical solution of the present invention is that: the teeth of the drive gear disk body are adapted to mesh with at least two external gear disks, the external gear disk is an inner cavity cover, and a through hole is provided in the central area of ​​the top of the external gear disk body. A rotating vertical shaft is adapted in the through hole. A drill rod bushing is also provided on the top of the external gear disk body and is away from the through hole. A vertical drill rod is adapted in the drill rod bushing. The top of the drill rod body rotates in the drill rod bushing. The drill rod bushing is fixed to the external gear disk as a whole and is used to adjust the position of the drill bit in the crescent hole.

[0013] A further improvement of the technical solution of the present invention is that: a gear is adapted to be installed on the upper part of the drill rod body, the drill rod body is inserted into the crescent hole, a locking pressure plate is set above the crescent hole, the locking pressure plate is fitted on the drill rod, a lower locking plate is set below the crescent hole, the lower locking plate is fitted on the drill rod, and the lower locking plate and the locking pressure plate are adapted to each other to clamp the drill rod.

[0014] A further improvement of the technical solution of the present invention is as follows: the crescent-shaped hole body is set on the lower plate and several are evenly and symmetrically arranged. The outer diameter of the locking pressure plate set above the crescent-shaped hole body is larger than that of the crescent-shaped hole. The central area of ​​the locking pressure plate body is provided with a groove. The central area of ​​the groove body is provided with a shaft through hole A. The inner peripheral wall of the groove body is provided with a thread. The thread is adapted to the constraint platform on the lower locking plate body. The outer surface of the constraint platform body is provided with a thread. The constraint platform and the lower locking plate are integrally formed. The central area of ​​the constraint platform is provided with a shaft through hole. The shaft through hole passes through the constraint platform and the lower locking plate. The outer diameter of the lower locking plate is larger than that of the crescent-shaped hole. The outer diameter of the constraint platform is adapted to the inner diameter of the crescent-shaped hole and moves with the drill rod.

[0015] A further improvement of the technical solution of the present invention is that: the drill rod body is fitted with gears, locking pressure plates, lower locking plates and drill rod joints in sequence from top to bottom. The locking pressure plates and lower locking plates are used to clamp the drill rod to prevent the drill rod from shifting in the crescent hole. The drill rod joint at the lower part of the drill rod body is adapted to detachably install the drill bit.

[0016] By adopting the above technical solution, the present invention has the following beneficial effects:

[0017] 1. The present invention provides a multi-position adjustable drilling device for large-diameter valve bodies. The device rotates a main bevel gear mounted on the output shaft of a motor. The main bevel gear drives the inner and outer bevel gears at both ends of the horizontal shaft body to rotate. The outer bevel gear drives the upper and lower bevel gears at both ends of the vertical shaft body to rotate. The lower gear drives the gear on the upper part of the drill rod to rotate, thereby driving the drill bit to perform drilling operations. This transmission method has high load-bearing capacity, small size, low noise, and long service life.

[0018] 2. This invention provides a multi-position adjustable drilling device for large-diameter valve bodies. The device has an adjusting rod mounted on the top surface of the inner shell. The adjusting rod has graduations and a threaded head at its tip. The threaded head is adapted to and drives the central gear disk to rotate. The central gear disk drives the drive gear disk to rotate. The central gear disk and the drive gear disk are integrally formed. The drive gear disk drives multiple external gear disks to rotate. A drill rod bushing is fixedly mounted on each external gear disk. The inner sleeve of the drill rod bushing body is adapted to the rotation of the drill rod. The drill rod passes through a crescent-shaped hole, and its position is adjusted within the crescent-shaped hole. The external gear disk and the drill rod bushing are integrally formed. When the external gear disk rotates, the drill rod also rotates, adjusting the drilling position on the valve body end face. This adjustment method is applicable to drilling operations of different valve body models, improving drilling efficiency.

[0019] 3. The present invention provides a multi-position adjustable drilling device for large-diameter valve bodies. The device can be set with multiple sets of drive drill bits for drilling operations according to user needs. The position adjustment of the drill bits only requires one adjusting rod to adjust the position of multiple sets of drill bits. Moreover, the drilling operation and the adjustment operation are independent of each other and do not conflict, which greatly improves the drilling efficiency and reduces the labor intensity of operators.

[0020] 4. The present invention provides a multi-position adjustable drilling device for large-diameter valve bodies. The drill rod is inserted into a crescent-shaped hole, which is located on the lower plate body. A locking plate and a lower locking plate are respectively arranged above and below the crescent-shaped hole. The locking plate and the lower locking plate are mutually adapted to rotate in the forward direction to lock the drill rod for positioning, which greatly improves the stability of the drill rod. The locking plate and the lower locking plate are mutually adapted to rotate in the reverse direction to release the drill rod for adjustment, which improves the convenience of drill rod displacement adjustment. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of a multi-position adjustable drilling device for large-diameter valve bodies. Figure 2 A three-dimensional structural schematic diagram of a multi-position adjustable drilling device for large-diameter valve bodies; Figure 3 for Figure 2 A top view of the inner shell, fixed seat A, and horizontal shaft. Figure 4 for Figure 2 Schematic diagram of the main bevel gear, internal bevel gear, and external bevel gear; Figure 5 for Figure 2 Schematic diagram of the middle and lower plates and drill bit; Figure 6 for Figure 2 A partially enlarged structural diagram of the central fixed seat A and the horizontal shaft; Figure 7 for Figure 2 Enlarged schematic diagram of the middle and outer bevel gears and the upper bevel gear; Figure 8 for Figure 2 Schematic diagram of the middle drive gear disk and the outer gear disk; Figure 9 for Figure 2Schematic diagram of the structure of the inner and outer gear disks and drill pipe; Figure 10 for Figure 2 Schematic diagram of the structure of the gear disc, the borehole, and the drill rod; Figure 11 for Figure 2 A partially enlarged schematic diagram of the lower gear and the gear itself; Figure 12 for Figure 2 A partially enlarged structural diagram of the central crescent hole and the lower locking plate; Figure 13 for Figure 12 Schematic diagram of the middle locking plate, lower locking plate, and groove structure; Figure 14 for Figure 12 Schematic diagram of the middle locking plate, lower locking plate and constraint platform structure; Figure 15 for Figure 2 A magnified schematic diagram of the lower and middle plates and the crescent-shaped opening.

[0023] Reference numerals: 1. Motor; 2. Housing; 3. Drill bit; 5. Inner housing; 6. Fixing seat; 7. Fixing seat A; 8. Horizontal shaft; 9. Adjusting rod; 10. Main bevel gear; 11. Output shaft; 12. Inner bevel gear; 13. Outer bevel gear; 14. Upper bevel gear; 15. Vertical shaft; 16. Lower plate; 17. Central gear disc; 18. Fixing seat B; 19. Drive gear disc; 20. Outer gear disc; 21. Threaded head; 22. Through hole; 23. Drill rod; 24. Lower gear; 25. Gear; 26. Locking pressure plate; 27. Crescent hole; 28. Lower locking plate; 29. ​​Drill rod joint; 30. Constraint table; 31. Shaft through hole; 32. Drill rod bushing; 33. Groove; 34. Shaft through hole A. Detailed Implementation

[0024] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0027] The present invention will be further explained below with reference to specific embodiments.

[0028] like Figures 1-15As shown in the figure, this embodiment provides a multi-position adjustable drilling device for large-diameter valve bodies, including a machine tool (not shown in the figure). A motor 1 and a housing 2 are fixed on the machine tool. The housing 2 is adapted to connect to an inner housing 5, and the inner housing 5 is adapted to connect to a lower plate 16. A main bevel gear 10 is adapted to be installed on the output shaft 11 of the motor 1. The main bevel gear 10 is adapted to drive a horizontal shaft 8 installed on the upper surface of the inner housing 5 through a fixed seat A7. At least two sets of horizontal shafts 8 are symmetrically arranged on the upper surface of the inner housing 5. An inner bevel gear 12 is installed at one end of the horizontal shaft 8, which is adapted to the main bevel gear 10. An outer bevel gear 13 is installed at the other end of the horizontal shaft 8, which is adapted to mesh with an upper bevel gear 14. The horizontal shaft 8 is horizontally inserted into the fixed seat A7, which is set on the upper surface of the inner housing 5. The horizontal shaft 8 and the vertical shaft 15 are adapted to each other. The horizontal shaft 8 is inserted horizontally into the fixed seat A7 near the main bevel gear 10, while the vertical shaft 15 is inserted vertically into the fixed seat 6, which is located on the outside and away from the fixed seat A7. The horizontal shaft 8 drives the vertical shaft 15. At least two sets of vertical shafts 15 are symmetrically arranged on the upper surface of the inner shell 5. The body of the vertical shaft 15 is inserted vertically into the fixed seat 6, which is located on the upper surface of the inner shell 5. The upper bevel gear 14 is installed on the upper part of the body of the vertical shaft 15, and the lower gear 24 is installed on the lower part of the body of the vertical shaft 15. The lower gear 24 meshes with the gear 25. The vertical shaft 15 drives the gear 25 to rotate through the lower gear 24. The gear 25 is adapted to fix the vertical drill rod 23, and the drill rod 23 drives the drill bit 3 to perform valve body drilling.Specifically, a motor 1 and a housing 2 are fixed on the machine tool. The housing 2 is an inner cavity cover. The output shaft 11 of the motor 1 penetrates into the inner cavity of the housing 2. A main bevel gear 10 is fixedly installed on the output shaft 11. The rotation of the main bevel gear 10 drives the rotation of multiple inner bevel gears 12. This embodiment provides 8 sets of horizontal shafts 8, which are evenly and symmetrically distributed outward with the main bevel gear 10 as the center point. Each set of horizontal shafts 8 is fixed and rotated by two fixing seats A7. The fixing seats A7 are fixed on the top surface of the inner housing 5. The fixing seats A7 are existing products and will not be described in detail here. An inner bevel gear 12 is installed at one end of the body of the horizontal shaft 8. The inner bevel gear 12 drives the horizontal shaft 8 to rotate under the drive of the main bevel gear 10. An outer bevel gear 13 is installed at the other end of the body of the horizontal shaft 8. The outer bevel gear 13 is adapted to mesh with an upper bevel gear 14. The upper bevel gear 14 is installed on the upper end of the body of the vertical shaft 15, while a lower gear 24 is installed at the lower end of the body of the vertical shaft 15. The vertical shaft 15 and the lower gear 24 are rotated. The vertical shaft 15 is fixed and rotated by the fixing seat 6, which is fixed on the top surface of the inner shell 5. The fixing seat 6 is an existing product and will not be described in detail here. The fixing seat 6 is located on the outer edge of the top surface of the inner shell 5 and is fixed away from the fixing seat A7. The lower gear 24 is adapted to the gear 25 set on the upper part of the drill rod 23 body. The gear 25 is adapted to be fitted on the drill rod 23 to achieve synchronous rotation. The drill rod connector 29 is installed on the lower part of the drill rod 23 body. The drill rod connector 29 is existing technology on the market and will not be described in detail here. The drill bit 3 is installed on the drill rod connector 29. The device rotates through the main bevel gear installed on the motor output shaft. The main bevel gear drives the inner bevel gear and outer bevel gear at both ends of the horizontal shaft body to rotate. The outer bevel gear drives the upper bevel gear and lower gear at both ends of the vertical shaft body to rotate. The lower gear drives the gear on the upper part of the drill rod to rotate, thereby driving the drill bit to perform drilling operations. This transmission method has high load-bearing capacity, small size, low noise, and long service life.

[0029] like Figure 3 ∽ Figure 10 and Figure 15As shown, in this embodiment, a fixing seat B18 is provided on the upper surface of the inner shell 5 near the outer edge. An adjusting rod 9 is adapted to be installed inside the fixing seat B18. The top of the adjusting rod 9 is a threaded head 21. The adjusting rod 9 and the threaded head 21 are integrally formed. The threaded head 21 is adapted to mesh with the central gear disk 17. The central gear disk 17 is located directly below the main bevel gear 10 and the distance between the two is at least 10cm. A driving gear disk 19 is abutted against the bottom surface of the central gear disk 17. The driving gear disk 19 is an inner cavity. The driving gear disk 19 is mounted on the lower plate 16 via a vertical shaft and rotates. The core gear disk 17 and the drive gear disk 19 are integrally formed; the teeth of the drive gear disk 19 are adapted to mesh with at least two external gear disks 20. The external gear disk 20 is an inner cavity cover. A through hole 22 is provided in the central area of ​​the top of the external gear disk 20. The through hole 22 is adapted to the rotating vertical shaft 15. A drill rod bushing 32 is also provided on the top of the external gear disk 20. A drill rod 23 is adapted inside the drill rod bushing 32. The top of the drill rod 23 rotates inside the drill rod bushing 32. The drill rod bushing 32 is fixed to the external gear disk 20 as one piece and is used to adjust the position of the drill bit 3 in the crescent hole 27. Specifically, the adjusting rod 9 is inserted into and fixed in the fixed seat B18. The fixed seat B18 is an existing product and will not be described in detail here. The user rotates the adjusting rod 9 to make it rotate automatically. The fixed seat B18 is located on the upper surface of the inner shell 5 body near the outer edge and penetrates the inner shell 5 wall for easy adjustment by the user. The adjusting rod 9, which protrudes from the inner shell 5 wall, has a scale for easy reference during adjustment. The threaded head 21 at the top of the adjusting rod 9 is adapted to the central gear disk 17. Similar to the principle of a worm gear, the threaded head 21 performs linear displacement and drives the central gear disk 17 to rotate. Directly below the central gear disk 17 is the drive gear disk 19. The central gear disk 17 and the drive gear disk 19 are integrally formed and have an internal cavity. The drive gear disk 19 is set on the lower plate 16 through a vertical shaft. The outer diameter of the drive gear disk 19 is larger than the outer diameter of the central gear disk 17. The central gear disk 17 is located directly below the main bevel gear 10, and the distance between the two is at least 10cm. This distance ensures... The two operate independently without conflict. The teeth of the drive gear disk 19 mesh with the external gear disk 20. The external gear disk 20 is a hollow inner cover. A through hole 22 is provided in the central area of ​​the top of the external gear disk 20. A rotating vertical shaft 15 is fitted inside the through hole 22. A drill rod bushing 32 is also provided on the top of the external gear disk 20. The drill rod bushing 32 is away from the through hole 22. A vertical drill rod 23 is fitted inside the drill rod bushing 32. The drill rod 23 rotates inside the drill rod bushing 32. The drill rod bushing 32 is fixed to the outer gear disk 20 as a whole, similar to a bearing structure. The inner ring rotates while the outer ring is fixed. The inner cavity of the outer gear disk 20 is adapted to accommodate the lower gear 24 and gear 25 at the lower end of the vertical shaft 15. The lower gear 24 and gear 25 are adapted to mesh with each other, driving the gear disk 19 to rotate and causing the outer gear disk 20 to rotate. The drill rod bushing 32 on the outer gear disk 20 drives the drill rod 23 to move, which is used to adjust the position of the drill bit 3 in the crescent hole 27.The device has an adjusting rod installed on the top surface of the inner shell. The adjusting rod has a scale and a threaded head at the top. The threaded head is adapted to and drives the central gear disk to rotate. The central gear disk drives the drive gear disk to rotate, and the drive gear disk drives multiple external gear disks to rotate. A drill rod bushing is fixedly installed on the external gear disk. The inner sleeve of the drill rod bushing body is adapted to the rotation of the drill rod. The drill rod is inserted into the crescent hole. When the external gear disk rotates, the drill rod also rotates to adjust the drilling position of the valve body end face. It is suitable for drilling operations of different models of valve bodies and improves drilling efficiency.

[0030] like Figure 5 , Figure 11As shown in Figure 15, in this embodiment, a gear 25 is fitted onto the upper part of the drill rod 23 body. The drill rod 23 body passes through the crescent hole 27. A locking plate 26 is provided above the crescent hole 27 and is fitted onto the drill rod 23. A lower locking plate 28 is provided below the crescent hole 27 and is fitted onto the drill rod 23. The lower locking plate 28 and the locking plate 26 are mutually fitted to lock the drill rod 23. The crescent hole 27 body is set on the lower plate 16 and several are evenly and symmetrically arranged. The outer diameter of the locking plate 26 above the crescent hole 27 body is larger than that of the crescent hole 27. A groove 33 is provided in the central area of ​​the locking plate 26 body. A shaft through hole A34 is provided in the central area of ​​the groove 33 body. The inner peripheral wall of the groove 33 body is... A thread is provided, which is adapted to the constraint platform 30 on the body of the lower locking plate 28. The outer surface of the constraint platform 30 is provided with a thread. The constraint platform 30 and the lower locking plate 28 are integrally formed. A shaft through hole 31 is provided in the central area of ​​the constraint platform 30. The shaft through hole 31 passes through the constraint platform 30 and the lower locking plate 28. The outer diameter of the lower locking plate 28 is larger than the crescent hole 27. The outer diameter of the constraint platform 30 is adapted to the inner diameter of the crescent hole 27 and moves with the drill rod 23. The drill rod 23 body is fitted with a gear 25, a locking pressure plate 26, a lower locking plate 28 and a drill rod connector 29 from top to bottom. The locking pressure plate 26 and the lower locking plate 28 are used to clamp the drill rod 23 to prevent the drill rod 23 from displacing in the crescent hole 27. The drill rod connector 29 is adapted to detachably install the drill bit 3.Specifically, the drill rod 23 is vertically inserted into the crescent-shaped hole 27. Multiple crescent-shaped holes 27 are evenly distributed on the lower plate 16 body. A locking plate 26 and a lower locking plate 28 are installed directly above and below each crescent-shaped hole 27, respectively. The locking plate 26 and lower locking plate 28 are respectively fitted onto the drill rod 23. The locking plate 26 is located on the upper surface of the crescent-shaped hole 27, and the lower locking plate 28 is located on the lower surface of the crescent-shaped hole 27. The size of the locking plate 26 is larger than that of the crescent-shaped hole 27 to prevent the locking plate 26 from falling off or getting stuck inside the crescent-shaped hole 27. A groove 33 is provided on the lower surface of the central area of ​​the main body. The inner circumferential wall of the groove 33 is threaded (not shown in the figure). A shaft through hole A34 is provided at the center of the groove 33. The shaft through hole A34 is adapted to the drill rod 23, facilitating the self-rotation of the drill rod 23 within the shaft through hole A34. A constraint platform 30 on the lower locking plate 28 is adapted within the groove 33. The outer circumferential wall of the constraint platform 30 is threaded. A shaft through hole 31 is provided through the central area of ​​the constraint platform 30. The shaft through hole 31 is also adapted to the drill rod 23, facilitating the movement of the drill rod 23 within the shaft through hole 31. The constraint table 30 rotates, and its outer diameter is smaller than the inner diameter of the crescent hole 27. By adjusting the rotation of the lower locking plate 28, the thread of the constraint table 30 in the lower locking plate 28 is adapted to the groove 33 in the locking pressure plate 26 for locking and loosening. When the user adjusts the position of the drill rod 23, the locking pressure plate 26 and the lower locking plate 28, which are clamped above and below the lower plate 16, are released by rotating the lower locking plate 28 in the opposite direction, thereby adjusting the position of the drill rod 23. The gear 25 on the upper part of the drill rod 23 body always meshes with the lower gear 24. The gear 25 initially... The position of the drill rod 23 is adjusted and moved around the toothed surface of the lower gear 24. When the position of the drill rod 23 is adjusted and positioned, the user rotates the lower locking plate 28 forward to tighten and clamp the lower plate 16, locking the drill rod 23 in place. The outer diameter of the constraint platform 30 in the lower locking plate 28 is smaller than the inner diameter of the crescent hole 27, and the constraint platform 30 fits into the crescent hole 27. The lower locking plate 28 is fitted onto the drill rod 23, and a drill rod connector 29 is fitted onto the lower part of the drill rod 23. A detachable drill bit 3 is fitted onto the drill rod connector 29. The drill rod passes into the crescent hole, which is located on the lower plate body. A locking pressure plate and a lower locking plate are respectively set above and below the crescent hole. The locking pressure plate and the lower locking plate fit together to lock and release the positioning and adjustment of the drill rod, greatly improving the stability of the drill rod and the convenience of displacement adjustment.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multi-position adjustable drilling device for large-diameter valve bodies, comprising a machine tool, wherein a motor (1) and a housing (2) are respectively fixed on the machine tool, the housing (2) is adapted to connect to an inner housing (5), and the inner housing (5) is adapted to connect to a lower plate (16); characterized in that: The main bevel gear (10) is adapted to be installed on the output shaft (11) of the motor (1). The main bevel gear (10) is adapted to drive the horizontal shaft (8) installed on the upper surface of the inner shell (5) through the fixed seat A (7). The horizontal shaft (8) drives the vertical shaft (15). The vertical shaft (15) drives the gear (25) to rotate through the lower gear (24). The gear (25) is fixed and adapted to the drill rod (23). The drill rod (23) drives the drill bit (3) to perform valve body drilling operation.

2. The multi-position adjustable drilling device for large-diameter valve bodies according to claim 1, characterized in that: At least two sets of horizontal shafts (8) are symmetrically arranged on the upper surface of the inner shell (5). An inner bevel gear (12) is installed at one end of the horizontal shaft (8), which is adapted to the main bevel gear (10). An outer bevel gear (13) is installed at the other end of the horizontal shaft (8), which is adapted to mesh with the upper bevel gear (14). The horizontal shaft (8) passes through the fixed seat A (7), which is located on the upper surface of the inner shell (5).

3. The multi-position adjustable drilling device for large-diameter valve bodies according to claim 2, characterized in that: At least two sets of vertical shafts (15) are symmetrically arranged on the upper surface of the inner shell (5). The vertical shafts (15) are vertical and pass through the fixed seat (6). The fixed seat (6) is arranged on the upper surface of the inner shell (5). The upper bevel gear (14) is installed on the upper part of the vertical shaft (15) and the lower gear (24) is installed on the lower part of the vertical shaft (15). The lower gear (24) meshes with the gear (25).

4. The multi-position adjustable drilling device for large-diameter valve bodies according to claim 2, characterized in that: The horizontal shaft (8) and the vertical shaft (15) are adapted to each other. The horizontal shaft (8) passes horizontally through the fixed seat A (7) and is close to the main bevel gear (10), while the vertical shaft (15) passes vertically through the fixed seat (6) and is located on the outside and away from the fixed seat A (7).

5. The multi-position adjustable drilling device for large-diameter valve bodies according to claim 2, characterized in that: A fixing seat B (18) is provided on the upper surface of the inner shell (5) near the outer edge. An adjusting rod (9) is fitted inside the fixing seat B (18). The top of the adjusting rod (9) is a threaded head (21). The adjusting rod (9) and the threaded head (21) are integrally formed. The threaded head (21) is adapted to mesh with the central gear disk (17). The central gear disk (17) is located directly below the main bevel gear (10) and the distance between the two is at least 10cm. The bottom surface of the central gear disk (17) is abutted against the driving gear disk (19). The driving gear disk (19) is an inner cavity. The driving gear disk (19) is mounted on the lower plate (16) and rotates through a vertical shaft. The central gear disk (17) and the driving gear disk (19) are integrally formed.

6. The multi-position adjustable drilling device for large-diameter valve bodies according to claim 5, characterized in that: The drive gear disk (19) is adapted to mesh with at least two external gear disks (20). The external gear disk (20) is an inner cavity cover. A through hole (22) is provided in the center area of ​​the top of the external gear disk (20). A rotating vertical shaft (15) is adapted in the through hole (22). A drill rod bushing (32) is also provided on the top of the external gear disk (20) and is far away from the through hole (22). The drill rod bushing (32) is adapted to a vertical drill rod (23). The top of the drill rod (23) rotates in the drill rod bushing (32). The drill rod bushing (32) is fixed to the external gear disk (20) as a whole and is used to adjust the position of the drill bit (3) in the crescent hole (27).

7. The multi-position adjustable drilling device for large-diameter valve bodies according to claim 6, characterized in that: A gear (25) is fitted on the upper part of the drill rod (23) body. The drill rod (23) body is vertically inserted into the crescent hole (27). A locking plate (26) is set above the crescent hole (27). The locking plate (26) is fitted on the drill rod (23) body. A lower locking plate (28) is set below the crescent hole (27). The lower locking plate (28) is fitted on the drill rod (23). The lower locking plate (28) and the locking plate (26) are fitted together to lock and clamp the drill rod (23).

8. The multi-position adjustable drilling device for large-diameter valve bodies according to claim 7, characterized in that: The crescent-shaped hole (27) is set on the body of the lower plate (16) and several are evenly and symmetrically arranged. The outer diameter of the locking plate (26) set above the crescent-shaped hole (27) is larger than that of the crescent-shaped hole (27). The center area of ​​the locking plate (26) is provided with a groove (33). The center area of ​​the groove (33) is provided with a shaft through hole A (34). The inner peripheral wall of the groove (33) is provided with a thread. The thread is adapted to the constraint platform (30) on the body of the lower locking plate (28). The outer surface of the constraint platform (30) is provided with a thread. The constraint platform (30) and the lower locking plate (28) are integrally formed. The center area of ​​the constraint platform (30) is provided with a shaft through hole (31). The shaft through hole (31) passes through the constraint platform (30) and the lower locking plate (28). The outer diameter of the lower locking plate (28) is larger than that of the crescent-shaped hole (27). The outer diameter of the constraint platform (30) is adapted to the inner diameter of the crescent-shaped hole (27) and moves with the drill rod (23).

9. The multi-position adjustable drilling device for large-diameter valve bodies according to claim 8, characterized in that: The drill rod (23) body is fitted with gear (25), locking pressure plate (26), lower locking plate (28) and drill rod connector (29) from top to bottom. The locking pressure plate (26) and lower locking plate (28) are used to clamp the drill rod (23) to prevent the drill rod (23) from shifting in the crescent hole (27). The drill rod connector (29) at the bottom of the drill rod (23) body is adapted to detachably install the drill bit (3).

Images