Automatic tapping device for iron column of mine machinery

Abstract

The present application relates to tapping equipment technical field, especially relates to a kind of mine machinery iron column automatic tapping device, including moving frame, thread rolling machine, arc bearing plate, locking unit and fine adjustment unit, the present application can solve the following problems existing in prior art: when the iron column workpiece is fixed by pressing plate and V-shaped clamping groove, the clamping effect is insufficient, the stability of iron column workpiece is insufficient, circumferential slip is prone to occur, thereby affecting tapping accuracy;Different diameter iron column workpiece cannot be pressed tightly, further affect the tapping accuracy of iron column workpiece;The iron column can be locked and fixed in multiple directions by the present application, thereby improving the stability of iron column during tapping, to improve tapping accuracy;The arc bearing plate and iron column can be adjusted in horizontal direction and vertical direction by the present application, thereby calibrating the input end of iron column and thread rolling machine, to ensure the tapping efficiency of iron column.

Description

Technical Field

[0001] This invention relates to the field of tapping equipment technology, and in particular to an automatic tapping device for iron pillars in mining machinery. Background Technology

[0002] In mining machinery, mine anchor bolts are key components of roadway support systems, playing a vital role in stabilizing rock masses and preventing collapse. Mine anchor bolts are typically long, strip-shaped iron pillars with external threads machined at one end to mate with nuts, trays, and other connecting parts, effectively transmitting the preload of the anchor bolt to the rock mass to form a reliable support system.

[0003] In the existing technology, those skilled in the art have also provided technical solutions for tapping iron pillars. For example, Chinese Patent No. CN222059060U discloses an automatic tapping device for iron pillars in mining machinery, including a worktable, a chuck mounted on the top of the worktable, a clamping plate rotatably connected to one side of the chuck on the top of the worktable, an mounting frame connected to the worktable, and lifting frames mounted on both sides of the mounting frame. In use, the mounting frame descends to press the clamping plate onto the chuck. The upper end of the chuck has a V-shaped groove for placing the workpiece. The lifting frames lift the processed workpiece off the chuck, completing the functions of clamping and automatic unloading. When the lifting frames descend, they press the lifting plate down, pulling the processing tables on both sides closer to the worktable, so as to facilitate simultaneous processing of both ends of the workpiece.

[0004] However, the aforementioned existing technologies still have some shortcomings in practical use: 1. The existing technology described above only places the iron column workpiece in the V-shaped groove and then clamps and fixes the iron column workpiece with a clamping plate. Therefore, the V-shaped groove and the clamping plate are in line contact with the surface of the iron column workpiece, resulting in insufficient clamping effect. This leads to a lack of stability in the iron column workpiece, making it difficult to resist the huge torque during tapping. This can easily cause the iron column workpiece to slip circumferentially during the processing, thus affecting the tapping accuracy.

[0005] 2. Although the V-shaped slot can accommodate iron column workpieces of different diameters, the clamping plate cannot cooperate with the clamping seat to clamp iron column workpieces of different diameters. Since the axial positions of iron column workpieces of different diameters are different, it is difficult to ensure that the axial position of the iron column workpiece coincides with the processing position of the tapping machine on both sides, which further affects the tapping accuracy of the iron column workpiece.

[0006] Therefore, based on the above-mentioned viewpoints, there is still room for improvement in existing methods of tapping with iron rods. Summary of the Invention

[0007] To address the aforementioned problems, this invention provides an automatic tapping device for iron pillars in mining machinery, comprising: a movable frame and a thread rolling machine. The movable frame is equipped with an arc-shaped support plate, a locking unit, and a fine-tuning unit. The arc-shaped support plate supports the iron pillar to be tapped; the locking unit limits and fixes the iron pillar placed on the upper part of the arc-shaped support plate, preventing it from swaying and affecting tapping accuracy; the fine-tuning unit fine-tunes the position of the iron pillar after it is fixed, allowing it to be precisely inserted into the input end of the thread rolling machine. The locking unit includes a support component and a clamping component installed on the upper part of the arc-shaped support plate. The support component pushes the iron pillar upwards, and the clamping component limits and fixes the iron pillar. After the iron pillar is placed on the arc-shaped support plate, the fine-tuning unit fine-tunes the position of the iron pillar so that its axis coincides with the axis of the thread rolling machine's input end. Then, the clamping component limits and fixes the iron pillar in multiple directions, and the thread rolling machine taps the outer wall of the iron pillar.

[0008] Preferably, the support assembly includes several mounting plates circumferentially and evenly installed on the inner wall of the arc-shaped support plate. Several top support groups are arranged along the length direction on the side of the mounting plate near the axis of the arc-shaped support plate. Each top support group includes two rotating balls symmetrically distributed along the mounting plate. The rotating balls are rotatably connected to the mounting plate through a fixing frame. Several anti-slip strips are installed on the outer wall of the rotating balls along the circumferential direction of the rotation axis to increase the friction between the rotating balls and the iron column.

[0009] Preferably, the clamping assembly includes support platforms installed at both ends of the top of the arc-shaped support plate. A vertical plate is installed on the upper end of the support platform by a bracing frame. Several through holes are equally spaced along the axial direction of the arc-shaped support plate on the vertical plate. A sliding plate is slidably fitted in the through holes. A U-shaped frame is provided at one end of the sliding plate near the axis of the arc-shaped support plate, which is used to cooperate with the rotating ball to clamp and limit the iron column in multiple directions.

[0010] Preferably, the clamping assembly further includes a receiving groove formed on the upper end of the sliding plate, a lead screw is provided in the receiving groove, a sleeve is rotatably installed on the side wall of the vertical plate through a positioning frame, the sleeve is rotatably sleeved on the outside of the lead screw, a nut is fixedly installed on one end of the sleeve, and a pulley is fixedly installed on the other end. The nut is sleeved on the outer wall of the lead screw by a threaded connection. A forward and reverse motor is also provided on the side wall of the vertical plate through a motor base, and the output shaft of the forward and reverse motor is connected to the pulley by a belt drive.

[0011] Preferably, the side wall of the vertical plate is equipped with a fixed platform located below the sliding plate. Multiple rollers are rotatably mounted on the upper end of the fixed platform, which rotate and abut against the bottom of the sliding plate to provide support for the sliding plate and drive the U-shaped frame to move stably.

[0012] Preferably, the sliding plate has a groove on the side near the U-shaped frame, a cylinder is installed in the groove, a pull plate is installed at the output end of the cylinder near the U-shaped frame, and an anti-slip strip covering the outside of the U-shaped frame is installed on the side of the pull plate away from the sliding plate. The anti-slip strip is made of flexible material and can adapt to deformation under external force. Multiple anti-slip protrusions are provided on the outer wall of the anti-slip strip. The extension direction of the anti-slip protrusions is perpendicular to the axis of the iron column, which is used to limit the iron column and prevent the iron column from moving arbitrarily along its axis.

[0013] Preferably, the vertical plate is provided with force-bearing shafts at both ends, and the force-bearing shafts are rotatably mounted on the support frame. The lower end of the vertical plate and the fixed platform are jointly provided with an arc-shaped frame. Multiple arc-shaped tooth seats are installed at equal intervals along the length direction at the lower end of the arc-shaped frame. The upper end of the support platform is rotatably provided with a linkage shaft through a connecting plate. Multiple cylindrical gears that mesh with the arc-shaped tooth seats are fixedly sleeved on the outer wall of the linkage shaft. A servo motor connected to the linkage shaft is installed on any one of the connecting plates through a motor frame.

[0014] Preferably, a positioning seat is installed at the upper end of the support platform. The upper end of the positioning seat has an arc-shaped concave surface that is the same as the outer wall contour of the arc-shaped frame. Multiple rotating rollers that roll in contact with the arc-shaped frame are rotatably arranged at the upper end of the arc-shaped concave surface. Through the cooperation of the positioning seat, rotating rollers and arc-shaped frame, the vertical plate, fixed platform and sliding plate can be supported to ensure stability.

[0015] Preferably, the fine-tuning unit includes several horizontal slides disposed on the upper end of the movable frame, and a transverse plate is slidably mounted on the upper end of the several horizontal slides. Two threaded rods are also rotatably mounted on the upper end of the movable frame via a positioning plate, and the threaded rods pass through the transverse plate by means of threaded connection.

[0016] Preferably, the fine-tuning unit further includes several scissor lifting mechanisms mounted on the upper end of the transverse plate, with a lifting seat at the upper end of the scissor lifting mechanism and an arc-shaped bearing plate mounted on the upper end of the lifting seat.

[0017] In summary, this application includes the following beneficial technical effects: I. The present invention uses multiple sets of rotating balls on the arc-shaped support plate to allow the iron column to roll adaptively between the rotating balls at the bottom of the arc-shaped support plate under the action of gravity, so that the axis of the iron column is parallel to the axis of the arc-shaped support plate, which facilitates the rapid calibration of the iron column with the input end of the thread rolling machine; in addition, the multiple sets of rotating balls on the inner wall of the arc-shaped support plate can accommodate iron columns of various diameters, which helps to improve the applicability of the present invention.

[0018] Second, this invention uses the two extended sections of the U-shaped frame to drive the anti-slip strip against both sides of the iron column, which can clamp and limit the iron column to prevent it from shifting. Then, the pull plate is controlled to tighten the anti-slip strip, so that the anti-slip strip is tightly attached to the outer wall of the iron column, which can increase the contact area between the anti-slip strip and the iron column, further limiting the iron column and preventing the iron column from moving along the axial direction. In addition, the clamping and limiting of the iron column and the secondary anti-slip limiting, together with the rotating ball with self-locking function, can ensure the multi-directional locking and fixing of the iron column, thereby improving the stability of the iron column during the tapping process and thus improving the tapping accuracy.

[0019] Third, by controlling the horizontal movement of the transverse plate and the vertical lifting of the lifting seat, this invention can make slight adjustments to the arc-shaped bearing plate and the entire iron column in both horizontal and vertical directions, thereby calibrating the iron column with the input end of the thread rolling machine and ensuring the tapping efficiency of the iron column. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a schematic diagram of the structure of the present invention.

[0022] Figure 2 This is a schematic diagram of the structure between the arc-shaped support plate and the locking unit of the present invention.

[0023] Figure 3 This is a schematic diagram of the structure between the arc-shaped support plate, the mounting plate, and the rotating ball of the present invention.

[0024] Figure 4 This is the present invention. Figure 3 A magnified view of part A.

[0025] Figure 5 This is a first structural schematic diagram of the clamping component of the present invention.

[0026] Figure 6 This is the present invention. Figure 5 Enlarged view of point B.

[0027] Figure 7 This is a schematic diagram of the second structure of the clamping component of the present invention.

[0028] Figure 8 This is the present invention. Figure 7 A magnified view of a portion of point C.

[0029] Figure 9 This is a schematic diagram of the structure of the fine-tuning unit of the present invention.

[0030] In the diagram, 1 is the mobile frame; 11 is the electric caster wheel. 2. Thread rolling machine; 3. Curved bearing plate; 4. Locking unit; 41. Support assembly; 411. Mounting plate; 412. Rotating ball; 413. Fixing bracket; 414. Anti-slip strip; 42. Clamping assembly; 421. Support platform; 422. Bracing frame; 423. Vertical plate; 424. Sliding plate; 425. U-shaped frame; 426. Lead screw; 427. Positioning frame; 428. Sleeve; 429. Nut; 430. Forward and reverse motor; 431. Fixed platform; 432. Roller; 433. Cylinder; 434. Pull plate; 435. Guide column; 436. Anti-slip strip; 437. Force-bearing shaft; 438. Arc frame; 439. Arc gear seat; 440. Connecting plate; 441. Linkage shaft; 442. Cylindrical gear; 443. Servo motor; 444. Positioning seat; 445. Rotary roller; 5. Fine-tuning unit; 51. Horizontal slide; 52. Transverse plate; 53. Positioning plate; 54. Threaded rod; 55. Drive motor; 56. Scissor lifting mechanism; 57. Lifting seat. Detailed Implementation

[0031] The following is in conjunction with the appendix Figures 1-9 The embodiments of the present invention will be described in detail below.

[0032] This application discloses an automatic tapping device for iron pillars in mining machinery. It should be noted that this application is mainly used in the process of automatically tapping iron pillars. In terms of technical effect, it can transport the iron pillar to one side of the input end of the thread rolling machine 2 and adjust the iron pillar so that it can be accurately and smoothly inserted into the input end of the thread rolling machine 2 for rolling and tapping. Furthermore, this application can also lock and fix the iron pillar in multiple directions, thereby improving the stability of the iron pillar during the tapping process and thus improving the tapping accuracy.

[0033] Reference Figure 1 and Figure 2 As shown, an automatic tapping device for iron pillars in mining machinery includes: a movable frame 1 and a thread rolling machine 2. The movable frame 1 is equipped with several electric casters 11 at its bottom, capable of bearing a large weight. The movable frame 1 is equipped with an arc-shaped support plate 3, a locking unit 4, and a fine-tuning unit 5. The arc-shaped support plate 3 is used to support the iron pillar to be tapped; the locking unit 4 is used to limit and fix the iron pillar placed on the upper end of the arc-shaped support plate 3 to prevent it from shaking and affecting the tapping accuracy; the fine-tuning unit 5 is used to fine-tune the position of the iron pillar after it is limited and fixed, so that the iron pillar can be accurately inserted into the input end of the thread rolling machine 2; the locking unit 4 includes a support component 41 and a clamping component 42 installed on the upper end of the arc-shaped support plate 3. The support component 41 is used to push the iron pillar upward, and the clamping component 42 is used to limit and fix the iron pillar.

[0034] It should be further explained that the electric caster 11 is electrically connected to an external control terminal. The control terminal can transmit commands to multiple electric casters 11, causing the electric casters 11 to drive the moving frame 1 to move and stand still, thereby driving the moving frame 1 and the iron column at its upper end to move in the corresponding direction. In addition, since the thread rolling machine 2 uses a non-cutting method to roll the thread, it can significantly improve the fatigue strength and durability of the thread, and can obtain better thread accuracy and surface finish. Therefore, in this embodiment, the thread rolling machine 2 is preferred for tapping.

[0035] In actual operation, the iron column is placed on the arc-shaped bearing plate 3 by external hoisting equipment. Then, the electric universal wheel 11 is started, which moves the moving frame 1 and the iron column together to one side of the thread rolling machine 2, so that the axis of the iron column is parallel to the axis of the rolling wheel of the thread rolling machine 2, thus completing the pre-positioning of the iron column. Then, the clamping assembly 42 is used to limit and fix the iron column in multiple directions. Then, the position of the iron column is finely adjusted by the fine adjustment unit 5 so that the axis of the iron column coincides with the axis of the input end of the thread rolling machine 2. Then, the thread rolling machine 2 taps the outer wall of the iron column. During this process, the electric universal wheel 11 drives the moving frame 1 and the iron column to move slowly to one side of the thread rolling machine 2, cooperating with the thread rolling machine 2 to roll the thread groove on the outer wall of the iron column.

[0036] Reference Figure 3 and Figure 4 As shown, in order to make it easier to place the iron column on the arc-shaped support plate 3 and move it axially with less effort, in this embodiment, the support assembly 41 includes several mounting plates 411 that are circumferentially and evenly installed on the inner wall of the arc-shaped support plate 3. Several top support groups are arranged along the length direction on the side of the mounting plate 411 near the axis of the arc-shaped support plate 3. Each top support group includes two rotating balls 412 symmetrically distributed along the mounting plate 411. The rotating balls 412 are rotatably connected to the mounting plate 411 through the fixing frame 413. The rotating balls 412 are rotatably connected to the fixing frame 413 through the rotating shaft. The rotating shaft is perpendicular to the axis of the arc-shaped support plate 3. The rotating shaft and the fixing frame 413 are connected by high-damping friction to keep the rotating shaft stationary after rotation, so as to prevent the rotating shaft and the rotating balls 412 from rotating arbitrarily and causing the position of the iron column to change. Several anti-slip strips 414 are installed on the outer wall of the rotating ball 412 along the circumferential direction of the rotating shaft to increase the friction between the rotating ball 412 and the iron column and prevent the position of the iron column from changing due to slippage after the rotating ball 412 automatically locks.

[0037] In actual operation, after the iron column is placed on the arc-shaped support plate 3, the rotating balls 412 of multiple top support groups can make the iron column roll adaptively between the two rotating balls 412 at the bottom of the arc-shaped support plate 3 under the action of gravity, that is, the axis of the iron column is parallel to the axis of the arc-shaped support plate 3. Then, the iron column is pushed to move it towards the side of the thread rolling machine 2. The iron column can be easily pushed under the rotational friction of multiple rotating balls 412. After the iron column is pushed to the designated position, it automatically stops under the automatic locking action of the rotating balls 412. The self-locking action of multiple rotating balls 412 can effectively counteract the inertia of the iron column, thereby preventing the iron column from moving randomly.

[0038] Furthermore, if the diameter of the iron column is small, it will roll downwards adaptively between the rotating balls 412 near the bottom of the arc-shaped support plate 3. If the diameter of the iron column is large, the number of rotating balls 412 that come into contact with the outer wall of the iron column will increase accordingly. That is, the bottom of the iron column is subjected to a circumferentially distributed supporting force to disperse the gravity borne by the rotating balls 412. Thus, the multiple sets of rotating balls 412 on the inner wall of the arc-shaped support plate 3 can accommodate iron columns of various diameters, which helps to improve the adaptability of the present invention. In addition, the iron column still rolls down to the bottom of the arc-shaped support plate 3 under the action of gravity, so as to facilitate the rapid calibration of the iron column with the input end of the thread rolling machine 2.

[0039] Reference Figure 5 , Figure 6 and Figure 7 As shown, in order to further limit and fix the iron column, a clamping component 42 is also provided in this embodiment. It can work with the automatically locking rotating ball 412 to further lock and fix the iron column. Specifically, the clamping component 42 includes a support platform 421 installed at both ends of the top of the arc-shaped support plate 3. A vertical plate 423 is installed on the upper end of the support platform 421 through a support frame 422. A number of through holes are equally spaced on the vertical plate 423 along the axial direction of the arc-shaped support plate 3. A sliding plate 424 is slidably assembled in the through holes. A U-shaped frame 425 is provided at one end of the sliding plate 424 near the axis of the arc-shaped support plate 3. The opening of the U-shaped frame 425 is parallel to the axis of the arc-shaped support plate 3 and is used to work with the rotating ball 412 to clamp and limit the iron column in multiple directions.

[0040] Furthermore, in this embodiment, the clamping assembly 42 also includes two symmetrically distributed receiving grooves opened on the upper end of the sliding plate 424. A lead screw 426 is provided in the receiving groove. The axis of the lead screw 426 is perpendicular to the axis of the arc-shaped bearing plate 3. A sleeve 428 is rotatably installed on the side wall of the vertical plate 423 through the positioning frame 427. The sleeve 428 is rotatably sleeved on the outside of the lead screw 426. A nut 429 is fixedly installed on one end of the sleeve 428, and a pulley is fixedly installed on the other end. The nut 429 is sleeved on the outer wall of the lead screw 426 by a threaded connection. A forward and reverse motor 430 is also provided on the side wall of the vertical plate 423 through a motor base. The output shaft of the forward and reverse motor 430 is connected to the pulley by a belt drive.

[0041] It should be further explained that a fixed platform 431 located below the sliding plate 424 is installed on the side wall of the vertical plate 423. Multiple rollers 432 are rotatably installed on the upper end of the fixed platform 431, which rotate and abut against the bottom of the sliding plate 424 to provide support for the sliding plate 424 and drive the U-shaped frame 425 to move stably.

[0042] Furthermore, in this embodiment, a groove is provided on the side of the sliding plate 424 near the U-shaped frame 425, and a cylinder 433 is provided in the groove. A pull plate 434 is provided at the output end of the cylinder 433 near the U-shaped frame 425. Two guide grooves are symmetrically provided along the cylinder 433 on the side of the groove near the U-shaped frame 425. Two guide posts 435 are provided on the pull plate 434 and slidably assembled in the guide grooves. An anti-slip strip 436 covering the outside of the U-shaped frame 425 is provided on the side of the pull plate 434 away from the sliding plate 424. The anti-slip strip 436 is made of flexible material and can adapt to deformation under external force. Multiple anti-slip protrusions are provided on the outer wall of the anti-slip strip 436. The extension direction of the anti-slip protrusions is perpendicular to the axis of the iron post, which is used to limit the iron post and prevent the iron post from moving arbitrarily along its axis.

[0043] In practical operation, after the iron column is placed on the upper end of the rotating ball 412 and pushed to the designated position, the forward and reverse motor 430 is started. The forward and reverse motor 430 drives the sleeve 428 and nut 429 to rotate through the pulley. Since the lead screw 426 is relatively fixed with the sliding plate 424, the nut 429 and the lead screw 426 rotate relative to each other. Under the action of the sleeve 428 and the positioning bracket 427, the nut 429 rotates at the fixed position. Therefore, the nut 429 can drive the lead screw 426, the sliding plate 424 and the U-shaped frame 425 to move as a whole towards the side closer to the iron column. This causes the two extensions of the U-shaped frame 425 to drive the anti-slip strip 436 to abut against both sides of the iron column, which is used to cooperate with the rotating ball 412 to clamp and limit the iron column and prevent it from shifting. Then, the cylinder 433 is started. The cylinder 433 drives the pull plate 434 to move away from the U-shaped frame 425. During this process, the movement of the U-shaped frame 425 can be controlled by the guide post 435 and the guide groove. The guide and support ensure the stable movement of the U-shaped frame 425 and prevent the output end of the cylinder 433 from bearing weight and thus shortening its service life. As the pull plate 434 moves, it tightens the anti-slip strip 436, ensuring it adheres tightly to the outer wall of the iron column. The anti-slip strip 436 adapts to the outer contour of the iron column, increasing the contact area. The U-shaped frame 425, anti-slip strip 436, and the anti-slip protrusions on its outer wall further limit the movement of the iron column, preventing it from moving along the axial direction. The combination of clamping and limiting the iron column, along with the secondary anti-slip limiting and the self-locking rotating ball 412, ensures multi-directional locking and fixing of the iron column, improving its stability during tapping and thus increasing tapping accuracy. The lead screw 426 is a self-locking threaded rod 54, which automatically locks with the lead screw 426 after the nut 429 stops rotating, preventing the nut 429 from rotating arbitrarily and causing the sliding plate 424 to shift.

[0044] After tapping is completed, the forward and reverse motor 430 drives the sleeve 428 and nut 429 to rotate in the opposite direction. The nut 429 drives the sliding plate 424 and U-shaped frame 425 to move in the opposite direction and reset through the lead screw 426, so as to release the limiting effect on the iron column, so that the iron column can be removed from the arc-shaped bearing plate 3 by external hoisting equipment.

[0045] Reference Figure 7 and Figure 8As shown, when rolling and tapping iron columns of different diameters, although the iron columns roll onto the bottom of the upper end of the arc-shaped bearing plate 3, the vertical positions of the axes of the iron columns of different diameters are different. This causes the U-shaped frame 425 to be unable to drive the anti-slip strip 436 to fit tightly against the outer wall of the iron columns of different diameters. Therefore, in this embodiment, force-bearing shafts 437 are provided at both ends of the vertical plate 423. The force-bearing shafts 437 are rotatably mounted on the support frame 422, so that the vertical plate 423 can move circumferentially along the force-bearing shafts 437, and the same support plate... The vertical plate 423 on the platform 421 and the lower end of the fixed platform 431 are both provided with an arc-shaped frame 438. Multiple arc-shaped gear seats 439 are installed at equal intervals along the length of the lower end of the arc-shaped frame 438. The upper end of the support platform 421 is rotatably provided with a linkage shaft 441 through a connecting plate 440. Multiple cylindrical gears 442 that mesh with the arc-shaped gear seats 439 are fixedly sleeved on the outer wall of the linkage shaft 441. A servo motor 443 connected to the linkage shaft 441 is installed on any one of the connecting plates 440 through a motor frame.

[0046] In practical work, when it is necessary to roll and tap iron columns of different diameters, the servo motor 443 is started. The servo motor 443 drives the cylindrical gear 442 to rotate through the linkage shaft 441. The cylindrical gear 442 drives the arc-shaped frame 438 to move circumferentially around the force axis 437 through the arc-shaped gear seat 439. The arc-shaped frame 438 drives the vertical plate 423, the fixed platform 431, the sliding plate 424, and the U-shaped frame 425 to move synchronously as a whole. This is used to adjust the position of the U-shaped frame 425 so that the opening of the U-shaped frame 425 points to the axis of the iron column, thereby clamping and limiting the iron columns of different diameters. When the sliding plate 424 drives the U-shaped frame 425 to move to one side of the iron column, both extensions of the U-shaped frame 425 can drive the anti-slip strip 436 to press against the iron column. The column is clamped and limited; in addition, the linkage shaft 441 and the connecting plate 440 are connected by a high-damping friction fit. After the linkage shaft 441 drives the arc-shaped support plate 3 to move circumferentially through the cylindrical gear 442, the linkage shaft 441 can be kept stationary under the dual action of the high-damping and the servo motor 443 in the stopped state, preventing it from rotating randomly. This prevents the arc-shaped support plate 3 from moving circumferentially and causing the U-shaped frame 425 to fail to align with the axis of the iron column. In addition, a liftable toothed plate (not shown in the figure) can be installed on the upper end of the support platform 421 through a telescopic cylinder 433. The toothed plate meshes with the cylindrical gear 442. The telescopic cylinder 433 drives the toothed plate to limit and fix the cylindrical gear 442, thereby keeping the linkage shaft 441 stationary.

[0047] It should be further explained that a positioning seat 444 is installed on the upper end of the support platform 421. The upper end of the positioning seat 444 has an arc-shaped concave surface with the same outline as the outer wall of the arc frame 438. Multiple rotating rollers 445 are rotatably arranged on the upper end of the arc-shaped concave surface, which are in rolling contact with the arc frame 438. Through the cooperation of the positioning seat 444, the rotating rollers 445 and the arc frame 438, the vertical plate 423, the fixed platform 431 and the sliding plate 424 can be supported to ensure stability.

[0048] Reference Figure 9 As shown, after the moving frame 1 moves the iron column to the designated position, in order to ensure that the iron column can be accurately inserted into the input end of the thread rolling machine 2, in this embodiment, the fine-tuning unit 5 includes several horizontal slides 51 set on the upper end of the moving frame 1. The upper ends of the several horizontal slides 51 are slidably equipped with transverse plates 52. The upper end of the moving frame 1 is also rotatably installed with two threaded rods 54 through the positioning plate 53. The threaded rods 54 pass through the transverse plate 52 through the threaded connection. The two threaded rods 54 are connected by belt drive. A drive motor 55 is installed on any one of the positioning plates 53 through the motor cover.

[0049] Furthermore, in this embodiment, the fine-tuning unit 5 also includes several scissor lifting mechanisms 56 installed on the upper end of the transverse plate 52. The upper end of the scissor lifting mechanism 56 is provided with a lifting seat 57, and the arc-shaped bearing plate 3 is installed on the upper end of the lifting seat 57. In this embodiment, the scissor lifting mechanism 56 adopts the prior art, which is mainly composed of cross-hinged connecting rods. The connecting rods are driven to extend and retract by the lead screw to realize the vertical lifting of the lifting seat 57. Since the scissor lifting mechanism 56 can withstand a large load, it can ensure stability during the lifting of the iron column and during the static period after lifting.

[0050] In actual operation, after the mobile frame 1 moves the iron column to the designated position, optionally, a camera is installed on the mobile frame 1 or the thread rolling machine 2. The camera captures images of the iron column and the input end of the thread rolling machine 2, and transmits the captured images to an external control terminal. The control terminal analyzes the captured images to determine whether the iron column can be accurately and smoothly inserted into the input end of the thread rolling machine 2. If the iron column is misaligned, the control terminal transmits instructions to the drive motor 55 and the scissor lifting mechanism 56. The drive motor 55 drives the threaded rod 54 to rotate, and the threaded rod 54 drives the transverse plate 52 to move along the horizontal slide table 51. The transverse plate 52 drives the lifting seat 57, the arc-shaped bearing plate 3, and the iron column to move horizontally as a whole. The scissor lifting mechanism 56 drives the lifting seat 57, the arc-shaped bearing plate 3, and the iron column to move vertically. In this way, by adaptively adjusting the iron column in both the horizontal and vertical directions, the iron column can be aligned with the input end of the thread rolling machine 2, ensuring the tapping efficiency of the iron column and preventing the large movement range of the electric caster wheel 11 from making it difficult to accurately adjust the iron column.

[0051] During operation: First step: The iron column is placed on the arc-shaped bearing plate 3 by external hoisting equipment. The rotating balls 412 of multiple top support groups can make the iron column roll adaptively between the two rotating balls 412 at the bottom of the arc-shaped bearing plate 3 under the action of gravity. That is, the axis of the iron column is parallel to the axis of the arc-shaped bearing plate 3, thus completing the pre-positioning of the iron column.

[0052] Step 2: Start the electric caster 11. The electric caster 11 moves the moving frame 1 together with the iron column to one side of the thread rolling machine 2, so that the axis of the iron column is parallel to the axis of the rolling wheel of the thread rolling machine 2. Then push the iron column to move it closer to one side of the thread rolling machine 2. After the iron column is pushed to the designated position, it automatically stops under the automatic locking action of the rotating ball 412.

[0053] Step 3: Start the forward and reverse motor 430. The forward and reverse motor 430 drives the sleeve 428 and nut 429 to rotate through the pulley. The nut 429 drives the lead screw 426, sliding plate 424 and U-shaped frame 425 to move as a whole closer to the iron column. This causes the two extensions of the U-shaped frame 425 to bring the anti-slip strip 436 against both sides of the iron column, which is used to cooperate with the rotating ball 412 to clamp and limit the iron column. Then, start the cylinder 433. The cylinder 433 tightens the anti-slip strip 436 through the pull plate 434, so that the anti-slip strip 436 is in close contact with the outer wall of the iron column, increasing the contact area between the anti-slip strip and the iron column. In this way, the U-shaped frame 425, the anti-slip strip 436 and the anti-slip protrusions on the outer wall can further limit the iron column and prevent the iron column from moving along the axial direction. This locks and fixes the iron column in multiple directions, thereby improving the stability of the iron column in the tapping process and thus improving the tapping accuracy.

[0054] Step 4: If the iron column is offset, the control terminal transmits instructions to the drive motor 55 and the scissor lifting mechanism 56. The drive motor 55 drives the threaded rod 54 to rotate, and the threaded rod 54 drives the horizontal plate 52, the lifting seat 57, the arc-shaped bearing plate 3 and the iron column to move horizontally as a whole. The scissor lifting mechanism 56 drives the lifting seat 57, the arc-shaped bearing plate 3 and the iron column to move vertically. In this way, by adaptively adjusting the iron column in the horizontal and vertical directions, the iron column can be aligned with the input end of the thread rolling machine 2.

[0055] Step 5: The electric caster 11 drives the moving frame 1 and the iron column to move slowly towards the side of the thread rolling machine 2. The thread rolling machine 2 rolls and taps the outer wall of the iron column, and during this process, the thread rolling machine 2 rolls the thread groove on the outer wall of the iron column.

[0056] Step 6: After tapping is completed, the electric caster wheel 11 drives the moving frame 1 to pull the iron column out of the thread rolling machine 2. Then, the forward and reverse motor 430 drives the sleeve 428 and nut 429 to rotate in the opposite direction. The nut 429 drives the sliding plate 424 and U-shaped frame 425 to move in the opposite direction and reset through the lead screw 426, which is used to release the limiting effect on the iron column. Then, the iron column is removed from the arc-shaped bearing plate 3 by external hoisting equipment.

[0057] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

[0058] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An automatic tapping device for iron pillars in mining machinery, characterized in that, include: The moving frame (1) and the thread rolling machine (2) are provided with an arc-shaped bearing plate (3), a locking unit (4) and a fine-tuning unit (5), wherein: The arc-shaped bearing plate (3) is used to support the iron column to be tapped; The locking unit (4) is used to limit and fix the iron column placed on the upper end of the arc-shaped bearing plate (3) to prevent it from shaking randomly and affecting the tapping accuracy. The fine-tuning unit (5) is used to fine-tune the position of the iron column after the limit is fixed, so that the iron column can be accurately inserted into the input end of the thread rolling machine (2); The locking unit (4) includes a support component (41) and a clamping component (42) installed on the upper end of the arc-shaped bearing plate (3). The support component (41) is used to push the iron column upward, and the clamping component (42) is used to limit and fix the iron column. After the iron column is placed on the arc-shaped bearing plate (3), the position of the iron column is finely adjusted by the fine-tuning unit (5) so that the axis of the iron column coincides with the axis of the input end of the thread rolling machine (2). Then, the clamping component (42) limits and fixes the iron column in multiple directions. Then, the thread rolling machine (2) taps the outer wall of the iron column.

2. The automatic tapping device for iron pillars in mining machinery according to claim 1, characterized in that: The support assembly (41) includes several mounting plates (411) that are uniformly installed circumferentially on the inner wall of the arc-shaped bearing plate (3). Several top support groups are provided along the length direction on the side of the mounting plate (411) near the axis of the arc-shaped bearing plate (3). The top support group includes two rotating balls (412) symmetrically distributed along the mounting plate (411). The rotating balls (412) are rotatably connected to the mounting plate (411) through a fixing frame (413). Several anti-slip strips (414) are installed on the outer wall of the rotating balls (412) along the circumferential direction of the axis of rotation to increase the friction between the rotating balls (412) and the iron column.

3. The automatic tapping device for iron pillars in mining machinery according to claim 2, characterized in that: The clamping assembly (42) includes a support platform (421) installed at both ends of the top of the arc-shaped support plate (3). A vertical plate (423) is installed on the upper end of the support platform (421) through a support frame (422). Several through holes are equally spaced on the vertical plate (423) along the axial direction of the arc-shaped support plate (3). A sliding plate (424) is slidably assembled in the through holes. A U-shaped frame (425) is provided at one end of the sliding plate (424) near the axis of the arc-shaped support plate (3) for cooperating with the rotating ball (412) to clamp and limit the iron column in multiple directions.

4. The automatic tapping device for iron pillars in mining machinery according to claim 3, characterized in that: The clamping assembly (42) also includes a receiving groove opened on the upper end of the sliding plate (424), in which a lead screw (426) is provided. A sleeve (428) is rotatably installed on the side wall of the vertical plate (423) through a positioning frame (427). The sleeve (428) is rotatably sleeved on the outside of the lead screw (426). A nut (429) is fixedly installed on one end of the sleeve (428), and a pulley is fixedly installed on the other end. The nut (429) is sleeved on the outer wall of the lead screw (426) by a threaded connection. A forward and reverse motor (430) is also provided on the side wall of the vertical plate (423) through a motor base. The output shaft of the forward and reverse motor (430) is connected to the pulley by a belt drive.

5. The automatic tapping device for iron pillars in mining machinery according to claim 3, characterized in that: The vertical plate (423) has a fixed platform (431) installed on its side wall, which is located below the sliding plate (424). Multiple rollers (432) are rotatably installed on the upper end of the fixed platform (431) and rotate to abut against the bottom of the sliding plate (424) to provide support for the sliding plate (424) so ​​that it drives the U-shaped frame (425) to move stably.

6. The automatic tapping device for iron pillars in mining machinery according to claim 3, characterized in that: The sliding plate (424) has a groove on the side near the U-shaped frame (425), and a cylinder (433) is installed in the groove. The output end of the cylinder (433) near the U-shaped frame (425) is provided with a pull plate (434). The side of the pull plate (434) away from the sliding plate (424) is provided with an anti-slip strip (436) covering the outside of the U-shaped frame (425). The anti-slip strip (436) is made of flexible material and can adapt to deformation under external force. The outer wall of the anti-slip strip (436) is provided with multiple anti-slip protrusions. The extension direction of the anti-slip protrusions is perpendicular to the axis of the iron column, which is used to limit the iron column and prevent the iron column from moving arbitrarily along its axis.

7. The automatic tapping device for iron pillars in mining machinery according to claim 3, characterized in that: The vertical plate (423) is provided with force shafts (437) at both ends. The force shafts (437) are rotatably mounted on the support frame (422). The vertical plate (423) and the fixed platform (431) are jointly provided with an arc frame (438). Multiple arc tooth seats (439) are installed at equal intervals along the length direction at the lower end of the arc frame (438). The upper end of the support platform (421) is rotatably provided with a linkage shaft (441) through a connecting plate (440). Multiple cylindrical gears (442) that mesh with the arc tooth seats (439) are fixedly sleeved on the outer wall of the linkage shaft (441). A servo motor (443) connected to the linkage shaft (441) is installed on any one of the connecting plates (440) through a motor frame.

8. The automatic tapping device for iron pillars in mining machinery according to claim 7, characterized in that: The support platform (421) is equipped with a positioning seat (444) at its upper end. The upper end of the positioning seat (444) has an arc-shaped concave surface that is the same as the outer wall contour of the arc frame (438). Multiple rotating rollers (445) that roll in contact with the arc frame (438) are rotatably arranged at the upper end of the arc-shaped concave surface. Through the cooperation of the positioning seat (444), the rotating rollers (445) and the arc frame (438), the vertical plate (423), the fixed platform (431) and the sliding plate (424) can be supported to ensure stability.

9. The automatic tapping device for iron pillars in mining machinery according to claim 1, characterized in that: The fine-tuning unit (5) includes several horizontal slides (51) set on the upper end of the moving frame (1). The upper ends of the several horizontal slides (51) are slidably equipped with a transverse plate (52). The upper end of the moving frame (1) is also rotatably installed with two threaded rods (54) through a positioning plate (53). The threaded rods (54) pass through the transverse plate (52) by threaded connection.

10. The automatic tapping device for iron pillars in mining machinery according to claim 9, characterized in that: The fine-tuning unit (5) also includes several scissor lifting mechanisms (56) installed on the upper end of the transverse plate (52). The upper end of the scissor lifting mechanism (56) is provided with a lifting seat (57), and the arc-shaped bearing plate (3) is installed on the upper end of the lifting seat (57).

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