Flange plate drilling device

Abstract

The invention provides a flange plate drilling device, and relates to the technical field of drilling equipment, the flange plate drilling device comprises a retaining ring, a drill bit and a driving device, and the driving device is installed in the retaining ring in a concentric fixing mode; the bottom end of a central power output shaft of the driving device is fixedly sleeved with a large-diameter gear ring; six horizontally-supported six-edge positioning shafts are welded to the outer circle of the circumference of the retaining ring in a surrounding mode, and drill bit installation assemblies are installed on the six-edge positioning shafts in a sliding mode; a vertically-supported rotating shaft is rotationally mounted on the drill bit mounting assembly, a drill bit is fixedly connected with the rotating shaft, and the bottom end part of the rotating shaft is fixedly sleeved with a chain wheel assembly. A synchronous driving assembly is rotationally installed on the retaining ring, and six cylindrical sliding blocks are arranged on the synchronous driving assembly in a surrounding mode. Compared with the prior art, the trouble that when the positions of the six drill bits are adjusted each time, the six drill bits and the driving device need to be additionally subjected to adaptive transmission again can be omitted, and operation and use are easy and convenient.

Description

Technical Field

[0001] The invention relates to the technical field of drilling equipment, and in particular to a flange drilling device. Background Art

[0002] Flange drilling device generally refers to mechanical equipment specially designed for drilling holes in flanges. This device can ensure accurate drilling position and high efficiency, and can handle flanges of different sizes and types.

[0003] In order to efficiently open a circle of fixed holes on a flange at one time, the existing drilling devices are mostly equipped with a circle of drill bits corresponding to the number of fixed holes. In order to reduce the energy consumption and manufacturing cost of the drilling device, the circle of drill bits are mostly arranged to be synchronously rotated and driven by a driving device. In addition, in order to appropriately open positioning holes on flanges of different diameters with different distances from the flange center, the circle of drill bits are mostly arranged to be slidably adjusted along the radial direction of the circular space formed by them. However, the optimization design of the synchronous drive mechanism for synchronously driving the circle of drill bits to rotate is not reasonable, resulting in displacement with the position change of the circle of drill bits and decoupling from the power of the driving device. As a result, after the sliding adjustment of the circle of drill bits, the synchronous drive mechanism and the driving device need to be re-adapted and transmitted, which is troublesome and inconvenient to operate and use, and is not conducive to improving the sliding adjustment efficiency of the circle of drill bits. Summary of the invention

[0004] In view of this, the present invention provides a flange drilling device to solve the problem that after sliding adjustment of a circle of drill bits, the synchronous drive mechanism and the drive device need to be re-adapted and transmitted, which makes the operation and use more troublesome and inconvenient.

[0005] The technical solution proposed by the present invention is: a flange drilling device, specifically comprising: a retaining ring, a drill bit and a driving device, wherein the driving device is installed in the retaining ring in a concentrically fixed manner; The bottom end of the central power output shaft of the driving device is fixedly sleeved with a large diameter gear ring; the outer circumference of the retaining ring is welded with six horizontally supported hexagonal positioning shafts, and the drill bit mounting assembly is slidably mounted on the hexagonal positioning shafts; the drill bit mounting assembly is rotatably mounted with a vertically supported rotating shaft, the drill bit is fixedly connected to the rotating shaft, and the bottom end of the rotating shaft is fixedly sleeved with a sprocket assembly; A synchronous drive assembly is rotatably mounted on the retaining ring, and six cylindrical sliders are arranged around the synchronous drive assembly; a sprocket assembly is rotatably mounted on the cylindrical slider; the sprocket assembly is composed of a sprocket and two gear plates with increased diameters that are integrally formed at the upper and lower ends of the sprocket; chains are tensioned between the six sprockets on the synchronous drive assemblies and the sprockets on the six drill bit mounting assemblies, and the two gear plates on the synchronous drive assembly are meshed with the large-diameter gear ring for transmission; six connecting rods are rotatably connected between the six drill bit mounting assemblies and the six cylindrical sliders.

[0006] Furthermore, a cage-shaped support frame is welded on the top of the retaining ring, and the cage-shaped support frame is composed of a central mounting plate and a circle of L-shaped support rods welded around the outer circle of the mounting plate; The driving device is composed of a motor at the top and a reducer at the bottom, wherein the housing of the motor is fixedly connected to the mounting plate.

[0007] Furthermore, the drill bit installation assembly as a whole is composed of a sliding sleeve, a positioning sleeve welded to the bottom of the sliding sleeve, and a rotating shaft penetrating and rotatably installed on the positioning sleeve, wherein the sliding sleeve is slidably matched with the hexagonal positioning shaft; The bottom end of the rotating shaft is screwed with a drill chuck, and the top end of the drill bit is inserted and clamped in the drill chuck; A force transmission ring is fixedly sleeved on the rotating shaft near the sprocket assembly, the sprocket assembly on the rotating shaft is limited between the force transmission ring and the drill chuck, and a thrust bearing is sleeved on the portion of the rotating shaft between the force transmission ring and the positioning sleeve; The sprocket assembly is driven by the rotating shaft through a key bar.

[0008] Furthermore, the synchronous drive assembly as a whole is composed of a connecting ring and six cylindrical sliders welded around the outer ring of the connecting ring, wherein the six cylindrical sliders are rotatably matched with the retaining ring, and a vertical wheel axle is welded to the bottom of the cylindrical slider, and the sprocket assembly on the cylindrical slider is rotatably matched with the bottom end of the vertical wheel axle and is limited at the bottom end of the vertical wheel axle.

[0009] Furthermore, the two gear plates on the sprocket assembly are spaced apart on the outer side of the circumference of the sprocket to form an annular chain groove, and the semicircular surrounding parts at both ends of the chain are respectively embedded and hidden in the annular chain grooves on the two sprocket assemblies at corresponding positions.

[0010] Furthermore, the head end of the connecting rod is rotatably connected to the top of the sliding sleeve, and the tail end is rotatably connected to the top of the cylindrical slider.

[0011] Furthermore, the connecting ring is rotatably located in the retaining ring, and a vertical positioning shaft is welded on the top of the connecting ring, and an arc-shaped driving rod is slidably sleeved on the vertical positioning shaft, and the arc-shaped driving rod is slidably located between two L-shaped support rods adjacent to the position of the arc-shaped driving rod; A positioning shaft that is pushed and positioned by a spring is slidably installed on the circumferential part of the connecting ring at the position where the vertical positioning shaft is located, and a pull rod is rotatably connected between the tail end of the positioning shaft and the tail end of the arc-shaped driving rod, and the spring that pushes and positions the positioning shaft is mounted on the middle section of the positioning shaft.

[0012] Furthermore, a row of positioning holes is formed through the circumferential portion of the retaining ring near the vertical positioning shaft, and the protruding portion of the first end of the positioning plug shaft is selectively plugged into and matched with the row of positioning holes.

[0013] Furthermore, it also includes: a drilling platform and a flange, wherein the drilling platform as a whole is composed of a circular bearing plate at the top and three vertical pillars welded around the outer edge of the bottom of the circular bearing plate, wherein an inverted U-shaped support frame is welded in the middle of the outer edge of the top of the drilling platform; A hydraulic telescopic cylinder with vertical support is hoisted and fixed at the middle position of the top of the U-shaped support frame, and the bottom end of the piston rod of the hydraulic telescopic cylinder is fixedly connected to the mounting plate; The flange is placed on the circular carrier plate and is concentrically positioned at the top of the circular carrier plate.

[0014] The flange drilling device provided by the present invention has the following beneficial effects: 1. The six drill bits can slide inward and outward along the six hexagonal positioning shafts to adjust the distance between them and the center of the flange. They are suitable for rotary drilling of fixed holes with different distances from the center of the flange on flanges of different diameters, which helps to improve the practicality and wide application of the drilling device.

[0015] Second, the connecting rod can maintain the distance between the drill bit mounting assembly and the cylindrical slider, ensuring that the tensioning distance between the drill bit mounting assembly and the two sprocket assemblies on the cylindrical slider remains unchanged when the drill is slidably adjusted, so that the chain between the two sprocket assemblies can be continuously maintained in a tensioned state for effective use, avoiding the chain from becoming loose due to the position changes of the drill bit mounting assembly and the cylindrical slider when the drill is slidably adjusted, eliminating the trouble of having to re-tension the chain each time the drill position is adjusted, and the operation is convenient and labor-saving.

[0016] 3. The large-diameter gear ring and the retaining ring are located on the same axial line, and then under the limiting effect of the retaining ring, when the six cylindrical sliders are driven to rotate along the retaining ring, the sprocket assembly thereon can always rotate along the large-diameter gear ring and maintain meshing transmission with the large-diameter gear ring, thereby ensuring the continuous and effective driving of the six drill bits after sliding adjustment. Compared with the prior art, this can avoid the transmission interruption between the drill bit and the drive device due to position change when the drill bit is adjusted, and can save the trouble of re-adapting the transmission of the six drill bits and the drive device each time the six drill bits are adjusted in position. It is easy to operate and use, which helps to further improve the efficiency of drill bit position adjustment.

[0017] Fourth, when the worker's hand holds the driving arc driving rod and slides up and down to control the positioning shaft to tighten the six drill bits, the worker can directly use the arc driving rod to rotate the connecting ring and the six cylindrical sliders to achieve sliding adjustment of the six drill bits. This allows the tightness and sliding adjustment operations of the six drill bits to be driven at one time through the arc driving rod, eliminating the trouble of tightening and sliding the six drill bits step by step, which helps to simplify the sliding adjustment steps of the six drill bits. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0019] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0020] In the attached picture: Figure 1 The overall structural diagram of the present invention is shown; Figure 2 A schematic diagram of the cage-shaped support structure of the present invention is shown; Figure 3 A schematic diagram of the bottom side structure of the retaining ring of the present invention is shown; Figure 4 A schematic diagram showing the disassembly and assembly state of the driving device of the present invention is shown; Figure 5 A schematic diagram showing a disassembled state of the synchronous drive assembly of the present invention is shown; Figure 6 A schematic diagram of the retaining ring structure of the present invention is shown; Figure 7 A schematic diagram of the structure of the drill bit installation assembly of the present invention is shown; Figure 8 A schematic diagram of a drill bit installation assembly of the present invention in an exploded state is shown; Fig. 9 A schematic diagram of the structure of the arc-shaped driving rod of the present invention is shown.

[0021] List of reference numerals: 1. Drilling table; 101. U-shaped support frame; 2. Hydraulic telescopic cylinder; 3. Flange; 4. retaining ring; 401. cage-shaped support frame; 402. hexagonal positioning shaft; 5. Drill bit installation assembly; 501. Sliding sleeve; 502. Positioning sleeve; 503. Rotating shaft; 5031. Force transmission ring; 504. Drill chuck; 505. Thrust bearing; 6. Drill bit; 7. Driving device; 701. Large diameter gear ring; 8. Synchronous drive assembly; 801. Columnar slider; 802. Connecting ring; 8021. Vertical positioning shaft; 803. Connecting rod; 804. Vertical wheel axle; 805. Arc-shaped driving rod; 806. Pull rod; 807. Positioning plug shaft; 9. sprocket assembly; 901. sprocket; 902. gear plate; 10. chain. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0023] The following is an embodiment of the present invention, please refer to Figures 1 to 9 : The present invention provides a flange drilling device, comprising: a retaining ring 4, a drill bit 6 and a driving device 7, wherein the driving device 7 is installed in the retaining ring 4 in a concentrically fixed manner; The bottom end of the central power output shaft of the driving device 7 is fixedly sleeved with a large diameter gear ring 701; the outer circumference of the retaining ring 4 is welded with six horizontally supported hexagonal positioning shafts 402, and the drill bit mounting assembly 5 is slidably mounted on the hexagonal positioning shafts 402; the drill bit mounting assembly 5 is rotatably mounted with a vertically supported rotating shaft 503, and the drill bit 6 is fixedly connected to the rotating shaft 503 (such as Figure 8 As shown), the bottom end portion of the rotating shaft 503 is fixedly sleeved with a sprocket assembly 9; A synchronous drive assembly 8 is rotatably mounted on the retaining ring 4, and six cylindrical sliders 801 are arranged around the synchronous drive assembly 8; a sprocket assembly 9 is rotatably mounted on the cylindrical slider 801; the sprocket assembly 9 is composed of a sprocket 901 and two gear plates 902 with increased diameters integrally formed at the upper and lower ends of the sprocket 901; a chain 10 is tensioned between the sprockets 901 on the six synchronous drive assemblies 8 and the sprockets 901 on the six drill bit mounting assemblies 5, and the two gear plates 902 on the synchronous drive assembly 8 are meshed with the large diameter gear ring 701 for transmission; six connecting rods 803 are rotatably connected between the six drill bit mounting assemblies 5 and the six cylindrical sliders 801; Through the meshing transmission of the large diameter gear ring 701, the driving device 7 can drive the sprockets 901 on the six synchronous drive assemblies 8 to rotate synchronously; through the six chains 10, the sprockets 901 on the six synchronous drive assemblies 8 can synchronously drive the sprockets 901 on the six drill bit mounting assemblies 5 and the six drill bits 6 to rotate when being driven to rotate synchronously; The top of the retaining ring 4 is welded with a cage-shaped support frame 401, which is composed of a central mounting disc and a circle of L-shaped struts welded around the outer circumference of the mounting disc; the driving device 7 is composed of a motor at the top and a speed reducer at the bottom side, and the housing of the motor is fixedly connected to the mounting disc; the drilling table 1 and the flange 3, the drilling table 1 is composed of a top circular bearing disc and three vertical struts welded around the outer eaves of the bottom circumference of the circular bearing disc. Among them, an inverted U-shaped support frame 101 is welded at the middle position of the outer eaves of the top circumference of the drilling table 1; a vertically supported hydraulic telescopic cylinder 2 is hoisted and fixed at the middle position of the top of the U-shaped support frame 101, and the bottom end of the piston rod of the hydraulic telescopic cylinder 2 is fixedly connected to the mounting disc; the flange 3 is placed on the circular bearing disc and is concentrically positioned at the top of the circular bearing disc; the synchronous drive assembly 8 is composed of a connecting ring 802 and six cylindrical sliders 801 welded around the outer circumference of the connecting ring 802 (as Figure 5 shown), among which the six cylindrical sliders 801 are rotationally matched with the retaining ring 4, and a vertical axle 804 is welded at the bottom of the cylindrical slider 801. The sprocket assembly 9 on the cylindrical slider 801 is rotationally matched with the bottom end of the vertical axle 804 and is limited at the bottom end of the vertical axle 804; The hydraulic telescopic cylinder 2 is used to drive the cage-shaped support frame 401, the retaining ring 4 and the six drill bits 6 to slide up and down. Among them, when the six drill bits 6 are driven to slide downwards, they contact the flange 3 and are used to drill and open fixing holes on the flange 3. When the six drill bits 6 are driven to slide upwards, they are used to withdraw from the completed fixing holes; The six drill bits 6 can slide inside and outside along the six hexagonal positioning shafts 402 to adjust their distance from the center of the flange 3, which is suitable for drilling and opening fixing holes on flanges 3 with different diameters. This helps to improve the practicability and wide application of the drilling device; The six cylindrical sliders 801 are welded and fixed together through the connecting ring 802, which enables the six cylindrical sliders 801 to be driven to rotate synchronously in positive and negative directions along the retaining ring 4; the six connecting rods 803, the six drill bit mounting assemblies 5 and the six cylindrical sliders 801 are jointly connected to form six crank-slider mechanisms. By rotating the six cylindrical sliders 801 in positive and negative directions through these six crank-slider mechanisms, the six drill bit mounting assemblies 5 and the six drill bits 6 can be driven to perform position adjustment and slide synchronously inside and outside for position adjustment. This can eliminate the cumbersome steps of sequentially sliding the six drill bit mounting assemblies 5 one by one to adjust the positions of the six drill bits 6, which helps to improve the position adjustment efficiency of the six drill bits 6; The connecting rod 803 can maintain the distance between the drill bit mounting assembly 5 and the cylindrical slider 801, ensuring that the tensioning distance between the drill bit mounting assembly 5 and the two sprocket assemblies 9 on the cylindrical slider 801 remains unchanged when the drill bit 6 is slidably adjusted, so that the chain 10 between the two sprocket assemblies 9 can be continuously maintained in a tensioned state for effective use, avoiding the chain 10 from loosening due to the position change of the drill bit mounting assembly 5 and the cylindrical slider 801 when the drill bit 6 is slidably adjusted, eliminating the trouble of re-tensioning the chain 10 each time the drill bit 6 is adjusted, and the operation is convenient and labor-saving; The large diameter gear ring 701 and the retaining ring 4 are located on the same axial line, and then under the limiting effect of the retaining ring 4, when the six cylindrical sliders 801 are driven to rotate along the retaining ring 4, the sprocket assembly 9 thereon can always rotate along the large diameter gear ring 701 and maintain meshing transmission with the large diameter gear ring 701, thereby ensuring the continuous and effective driving of the six drill bits 6 after the sliding adjustment. Compared with the prior art, this can avoid the interruption of transmission between the drill bit 6 and the drive device 7 due to position change when the position of the drill bit 6 is adjusted, and can save the trouble of additionally adapting the transmission of the six drill bits 6 and the drive device 7 each time the position of the six drill bits 6 is adjusted. The operation is simple and easy to use, which helps to further improve the position adjustment efficiency of the drill bit 6. It is worth noting that the circular carrier plate should be equipped with a mechanism for clamping and positioning the inner ring or outer ring of the flange 3, so as to position the flange 3 in a concentric state with the circular carrier plate during the drilling process; since the mechanism for clamping and positioning the inner ring or outer ring of the flange 3 is commonly available in this field and belongs to the prior art, it is not described and shown in detail in the specification and the drawings of the specification.

[0024] Preferably, the drill bit installation assembly 5 as a whole is composed of a sliding sleeve 501, a positioning sleeve 502 welded to the bottom of the sliding sleeve 501, and a rotating shaft 503 that penetrates and rotates on the positioning sleeve 502, wherein the sliding sleeve 501 is slidably matched with the hexagonal positioning shaft 402; The bottom end of the rotating shaft 503 is screwed with a drill chuck 504, and the top end of the drill bit 6 is inserted and clamped in the drill chuck 504; A force transmission ring 5031 is fixedly mounted on the rotating shaft 503 near the sprocket assembly 9. The sprocket assembly 9 on the rotating shaft 503 is limited between the force transmission ring 5031 and the drill chuck 504, and a thrust bearing 505 is mounted on the portion of the rotating shaft 503 between the force transmission ring 5031 and the positioning sleeve 502. The sprocket assembly 9 is transmitted to the rotating shaft 503 through a key bar.

[0025] Preferably, the two gear plates 902 on the sprocket assembly 9 are spaced apart on the outer side of the circumference of the sprocket 901 to form an annular chain groove, and the semicircular surrounding parts at both ends of the chain 10 are respectively embedded and hidden in the annular chain grooves on the two sprocket assemblies 9 at corresponding positions.

[0026] Preferably, the head end of the connecting rod 803 is rotatably connected to the top of the sliding sleeve 501 , and the tail end is rotatably connected to the top of the cylindrical slider 801 .

[0027] Preferably, the connecting ring 802 is rotatably located in the retaining ring 4, and a vertical positioning shaft 8021 (such as Figure 5 As shown in FIG. 1 ), an arc-shaped driving rod 805 is slidably mounted on the vertical positioning shaft 8021, and the arc-shaped driving rod 805 is slidably located between two L-shaped support rods adjacent to the arc-shaped driving rod 805 (as shown in FIG. 1 ). Figure 2 As shown); a positioning plug shaft 807 positioned by a spring push is slidably installed on the circumferential portion of the connecting ring 802 at the position where the vertical positioning shaft 8021 is located, and a pull rod 806 (as shown) is rotatably connected between the tail end of the positioning plug shaft 807 and the tail end of the arc-shaped driving rod 805 Fig. 9 As shown), the spring for pushing and positioning the positioning plug shaft 807 is sleeved on the middle section of the positioning plug shaft 807.

[0028] Preferably, a row of positioning holes is formed through the circumference of the retaining ring 4 near the vertical positioning shaft 8021, and the protruding portion of the first end of the positioning plug shaft 807 is plugged into the row of positioning holes in an optional manner; The positioning plug shaft 807 is plugged into a row of positioning holes to position and maintain the six drill bit installation components 5 and the six drill bits 6 in the use position after sliding adjustment; the positioning plug shaft 807, the pull rod 806 and the arc-shaped driving rod 805 are connected together to form a crank slider mechanism, through which the arc-shaped driving rod 805 can slide up and down to drive the positioning plug shaft 807 to slide and plug into the positioning holes or to be pulled out and separated, thereby tightening the six drill bit installation components 5; the spring on the positioning plug shaft 807 is used to rebound and push the positioning plug shaft 807 to slide back and reset and re-plug and match the positioning holes, and drive the arc-shaped driving rod 805 to slide back; When the worker's hand holds the arc-shaped driving rod 805 to slide up and down and control the positioning plug shaft 807 to tighten and loosen the six drill bits 6, the arc-shaped driving rod 805 can be used to rotate the connecting ring 802 and the six cylindrical sliders 801 to achieve sliding adjustment of the six drill bits 6. This allows the six drill bits 6 to be tightened and slidably adjusted at one time through the arc-shaped driving rod 805, eliminating the trouble of tightening and sliding the six drill bits 6 in steps, which helps to simplify the sliding adjustment steps of the six drill bits 6. The arc-shaped driving rod 805 is a component for driving the connecting ring 802 and the six cylindrical sliders 801 to rotate and slide the six drill bits 6. Its length is greater than the distance between the two adjacent L-shaped struts. Relying on the sufficient length provided by the arc-shaped driving rod 805, when the hand is holding the arc-shaped driving rod 805 to rotate and drive the six cylindrical sliders 801, it only needs to slide back and forth in the open exposed space between the two L-shaped struts adjacent to the arc-shaped driving rod 805 to complete the large-scale rotation drive of the six cylindrical sliders 801. This can avoid the above two L-shaped struts from blocking the action of the hand sliding the arc-shaped driving rod 805, which helps to indirectly improve the convenience of sliding adjustment of the six drill bits 6. The arc-shaped driving rod 805 serves as a component for driving the positioning plug-in shaft 807 to push, pull, and loosen / tighten. The worker's hand can slide down smoothly and unobstructed in the open space between the two L-shaped plug-in shafts to drive the arc-shaped driving rod 805 to loosen / tighten the six drill bits 6. Compared with the prior art that lacks a crank slider mechanism (the crank slider mechanism consists of a positioning plug-in shaft 807, a pull rod 806, and an arc-shaped driving rod 805), the worker can save the trouble of inserting the hand into the cramped space inside the retaining ring 4 and pushing and pulling the positioning plug-in shaft 807 to loosen / tighten the six drill bits 6. The worker can avoid the cramped space inside the retaining ring 4 and the six L-shaped plug-in shafts from blocking the hand's pushing and pulling of the positioning plug-in shaft 807, which helps to improve the convenience of the loosening / tightening operation of the six drill bits 6.

[0029] The working principle of this embodiment is as follows: through the meshing transmission of the large diameter gear ring 701, the driving device 7 can drive the sprockets 901 on the six synchronous drive assemblies 8 to rotate synchronously; through the six chains 10, the sprockets 901 on the six synchronous drive assemblies 8 can synchronously drive the sprockets 901 on the six drill bit mounting assemblies 5 and the six drill bits 6 to rotate when being driven to rotate synchronously; The hydraulic telescopic cylinder 2 is used to telescopically drive the cage-shaped support frame 401, the retaining ring 4 and the six drill bits 6 to slide up and down, wherein the six drill bits 6 are in contact with the flange 3 when being driven to slide downward, and are used to drill and open the fixing holes on the flange 3, and the six drill bits 6 are used to be pulled out from the fixed holes after opening when being driven to slide upward; The six drill bits 6 can slide inward and outward along the six hexagonal positioning shafts 402 to adjust the distance between them and the center of the flange 3, and are suitable for drilling and opening fixed holes on flanges 3 of different diameters and at different distances from the center of the flange 3. The six cylindrical sliders 801 are welded and fixed together by connecting rings 802, so that the six cylindrical sliders 801 can be driven to rotate forward and backward synchronously along the retaining ring 4; the six connecting rods 803, the six drill bit mounting assemblies 5 and the six cylindrical sliders 801 are connected together to form a six-position crank slider mechanism, through which the six cylindrical sliders 801 are rotated forward and backward, and the six drill bit mounting assemblies 5 and the six drill bits 6 can be driven to adjust their positions and slide inward and outward synchronously for position adjustment; The positioning plug-in shaft 807 is plugged into and matched with a row of positioning holes to plug and fix the connecting ring 802 and the six cylindrical sliders 801, so that the six drill bit mounting assemblies 5 and the six drill bits 6 are positioned and maintained in the use position after sliding adjustment. The positioning plug-in shaft 807, the pull rod 806 and the arc-shaped driving rod 805 are connected together to form a crank slider mechanism, through which the arc-shaped driving rod 805 that slides up and down can drive the positioning plug-in shaft 807 to slide and insert and engage with the positioning holes or be pulled out and separated, so as to loosen or tighten the six drill bit mounting assemblies 5. When the worker's hand holds the driving arc-shaped driving rod 805 and slides up and down to control the positioning plug-in shaft 807 to pull and tighten the six drill bits 6, the connecting ring 802 and the six cylindrical sliders 801 can be directly driven to rotate through the arc-shaped driving rod 805 to realize sliding adjustment of the six drill bits 6.

[0030] In this article, there are a few points to note: 1. The drawings of the embodiments of the present invention only involve structures related to the embodiments of the present invention, and other structures can refer to the general design.

[0031] 2. In the absence of conflict, the embodiments of the present invention and the features therein may be combined with each other to obtain new embodiments.

[0032] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A flange drilling device, comprising: A retaining ring (4), a drill bit (6) and a driving device (7), wherein the driving device (7) is installed inside the retaining ring (4) in a concentrically fixed manner; The invention is characterized in that a large-diameter gear ring (701) is fixedly sleeved on the bottom end of the central power output shaft of the driving device (7); six horizontally supported hexagonal positioning shafts (402) are welded around the circumferential outer ring of the retaining ring (4), and a drill mounting assembly (5) is slidably mounted on the hexagonal positioning shafts (402); a vertically supported rotating shaft (503) is rotatably mounted on the drill mounting assembly (5), the drill bit (6) is fixedly connected to the rotating shaft (503), and a sprocket assembly (9) is fixedly sleeved on the bottom end portion of the rotating shaft (503); A synchronous drive assembly (8) is rotatably mounted on the retaining ring (4), and six cylindrical sliders (801) are disposed around the synchronous drive assembly (8); a sprocket assembly (9) is rotatably mounted on the cylindrical slider (801); the sprocket assembly (9) is composed of a sprocket (901) and two gear plates (902) with increased diameters integrally formed at the upper and lower ends of the sprocket (901); chains (10) are tensioned between the sprockets (901) on the six synchronous drive assemblies (8) and the sprockets (901) on the six drill bit mounting assemblies (5), and the two gear plates (902) on the synchronous drive assembly (8) are meshed with the large-diameter gear ring (701) for transmission; and six connecting rods (803) are rotatably connected between the six drill bit mounting assemblies (5) and the six cylindrical sliders (801).

2. A flange drilling device according to claim 1, characterized in that: A cage-shaped support frame (401) is welded to the top of the retaining ring (4), and the cage-shaped support frame (401) is composed of a central mounting plate and a circle of L-shaped support rods welded around the outer circumference of the mounting plate; The driving device (7) is composed of a motor at the top and a reducer at the bottom, wherein the housing of the motor is fixedly connected to the mounting plate.

3. A flange drilling device according to claim 1, characterized in that: The drill bit mounting assembly (5) is composed of a sliding sleeve (501), a positioning sleeve (502) welded to the bottom of the sliding sleeve (501), and a rotating shaft (503) penetrating and rotatably mounted on the positioning sleeve (502), wherein the sliding sleeve (501) is slidably matched with the hexagonal positioning shaft (402); The bottom end of the rotating shaft (503) is screwed to a drill chuck (504), and the top end of the drill bit (6) is inserted and clamped in the drill chuck (504); A force transmission ring (5031) is fixedly sleeved on the rotating shaft (503) at a position close to the sprocket assembly (9); the sprocket assembly (9) on the rotating shaft (503) is limited between the force transmission ring (5031) and the drill chuck (504); and a thrust bearing (505) is sleeved on a portion of the rotating shaft (503) located between the force transmission ring (5031) and the positioning sleeve (502); The sprocket assembly (9) is driven by a key bar and a rotating shaft (503).

4. A flange drilling device according to claim 2, characterized in that: The synchronous drive assembly (8) as a whole is composed of a connecting ring (802) and six cylindrical sliders (801) welded around the outer circumference of the connecting ring (802), wherein the six cylindrical sliders (801) are rotatably matched with the retaining ring (4), and a vertical wheel shaft (804) is welded to the bottom of the cylindrical slider (801), and the sprocket assembly (9) on the cylindrical slider (801) is rotatably matched with the bottom end of the vertical wheel shaft (804) and is limited at the bottom end of the vertical wheel shaft (804).

5. A flange drilling device according to claim 1, characterized in that: The two gear plates (902) on the sprocket assembly (9) are spaced apart on the outer side of the circumference of the sprocket (901) to form an annular chain groove, and the semicircular surrounding parts at both ends of the chain (10) are respectively embedded and hidden in the annular chain grooves on the two sprocket assemblies (9) at corresponding positions.

6. A flange drilling device according to claim 3, characterized in that: The head end of the connecting rod (803) is rotatably connected to the top of the sliding sleeve (501), and the tail end is rotatably connected to the top of the cylindrical sliding block (801).

7. A flange drilling device according to claim 4, characterized in that: The connecting ring (802) is rotatably located in the retaining ring (4), and a vertical positioning shaft (8021) is welded to the top of the connecting ring (802), an arc-shaped driving rod (805) is slidably sleeved on the vertical positioning shaft (8021), and the arc-shaped driving rod (805) is slidably located between two L-shaped support rods adjacent to the arc-shaped driving rod (805); A positioning plug shaft (807) which is positioned by a spring push is slidably installed through the circumferential portion of the connecting ring (802) at the position where the vertical positioning shaft (8021) is located, and a pull rod (806) is rotatably connected between the tail end of the positioning plug shaft (807) and the tail end of the arc-shaped driving rod (805), and the spring for pushing the positioning plug shaft (807) into position is sleeved on the middle section of the positioning plug shaft (807).

8. A flange drilling device according to claim 7, characterized in that: A row of positioning holes is formed through the circumferential portion of the retaining ring (4) near the vertical positioning shaft (8021), and the protruding portion at the head end of the positioning plug shaft (807) is plugged into the row of positioning holes in an optional manner.

9. A flange drilling device according to claim 2, characterized in that: Also includes: A drilling platform (1) and a flange (3), wherein the drilling platform (1) as a whole is composed of a circular support plate at the top and three vertical pillars welded around the outer circumference of the bottom of the circular support plate, wherein an inverted U-shaped support frame (101) is welded in the middle of the outer circumference of the top of the drilling platform (1); A hydraulic telescopic cylinder (2) supported vertically is hoisted and fixed at the middle position of the top of the U-shaped support frame (101), and the bottom end of the piston rod of the hydraulic telescopic cylinder (2) is fixedly connected to the mounting plate; The flange (3) is placed on the circular supporting plate and is concentrically positioned at the top of the circular supporting plate.

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