Automatic grinding equipment for ball body of ball valve

Abstract

The invention discloses automatic grinding equipment for ball bodies of ball valves, and relates to the field of ball grinding, the automatic grinding equipment comprises a machine body, the machine body is rotatably provided with an insertion rod, the insertion rod is vertically arranged, the insertion rod is in insertion connection with an insertion port of a ball body and forms coaxial rotation, and the machine body is provided with an abutting rod located on the upper side of the insertion rod in a lifting mode. An abutting rod is arranged on the machine body, the abutting rod abuts against the abutting plane of the ball, a mounting plate is arranged on the machine body in a swinging mode, two mounting bases are arranged on the mounting plate in a relative sliding mode, mounting discs are rotationally arranged on the mounting bases, and grinding discs are detachably connected into the mounting discs. Three clamping plates are arranged on the inner side of the mounting disc along the circumference, a clamping gap for clamping a grinding disc is formed among the three clamping plates, and a driving assembly for driving the three clamping plates to slide synchronously is arranged on the mounting disc. Different grinding discs can be disassembled and assembled so as to adapt to grinding machining of balls of different sizes, and the applicability is high.

Description

Technical Field

[0001] The present application relates to the field of ball grinding, and in particular to an automatic grinding device for a ball valve ball. Background Art

[0002] Ball valves are mainly used to cut off, distribute and change the flow direction of the medium in the pipeline. They can be closed tightly by rotating 90 degrees and applying a small torque. The opening and closing of the ball valve is driven by the valve stem to rotate the ball to achieve fluid regulation and control. Figure 1 The sphere includes a body 50 , a contact plane 60 is formed on one side of the body 50 , an insertion port 70 is provided on a side of the body 50 opposite to the contact plane 60 , and a flow channel 80 for fluid medium to flow is provided through the body 50 .

[0003] The grinding effect of the ball can affect its own service life and the sealing performance of the ball valve. The grinding device of the existing ball valve is connected to the plug-in interface of the ball through a vertical plug-in rod to form a coaxial rotation. The plug-in rod drives the ball to rotate, and the grinding disc grinds the surface of the ball. However, the grinding disc of the existing grinding device is usually fixed on the driving part, and can only grind balls of the same specification. When it is necessary to grind larger or smaller balls, the corresponding grinding device needs to be replaced, which is costly. That is, the existing grinding device is not very applicable. Summary of the invention

[0004] In order to improve the applicability of grinding equipment, the present application provides an automatic grinding equipment for a ball valve ball.

[0005] The automatic grinding equipment for ball valve provided in the present application adopts the following technical solution: An automatic grinding device for a ball of a ball valve comprises a machine body, wherein the machine body is rotatably provided with a plug-in rod, the plug-in rod is vertically arranged, the plug-in rod is plugged into the plug-in interface of the ball and forms coaxial rotation, the machine body is located on the upper side of the plug-in rod and is lifted and lowered with an abutment rod, the abutment rod abuts against the abutment plane of the ball, a mounting plate is swingably provided on the machine body, two mounting seats are relatively slidably provided on the mounting plate, a mounting disk is rotatably provided on the mounting seat, a grinding disk is detachably connected to the mounting disk; three clamping plates are arranged along the circumference of the inner side of the mounting disk, a clamping gap for clamping the grinding disk is formed between the three clamping plates, and a driving component for driving the three clamping plates to slide synchronously is arranged on the mounting disk.

[0006] By adopting the above technical scheme, the ball of the ball valve is plugged into the connecting rod and forms a coaxial rotation, the abutment rod descends and abuts against the abutment plane of the ball, forming a limit on the ball in the vertical direction, and then the grinding disk adapted to the ball is placed in the clamping gap, and the driving component drives the three clamping plates to slide toward each other, so that the grinding disk can be clamped and fixed synchronously, and then the two mounting seats slide toward each other and abut against the surface of the ball, and then the connecting rod rotates to drive the ball to rotate, and at the same time the mounting plate drives the grinding plate to rotate, and the mounting plate swings back and forth to realize the grinding of the ball surface; when grinding balls of different specifications, it is only necessary to replace the grinding plates of different specifications to adapt to the ball size, and the cost is low, that is, the grinding equipment of the present application has strong applicability.

[0007] Preferably, a liquid outlet pipe is further provided on the machine body, and the liquid outlet pipe is located on the upper side of the sphere, and the liquid outlet of the liquid outlet pipe faces the edge of the abutting plane of the sphere.

[0008] By adopting the above technical solution, the liquid outlet pipe sprays grinding liquid outward, and drips out on the edge of the abutting plane, and then slides down along the spherical surface of the sphere. During grinding, the plug-in rod drives the sphere to rotate and drips the grinding liquid downward at the same time, so that the grinding liquid covers the spherical surface of the sphere, and then the grinding operation is carried out; during the grinding process, the grinding liquid continuously drips and replenishes onto the spherical surface to ensure the grinding effect.

[0009] Preferably, a slide rail is provided on the mounting plate, and the mounting seat is slidably matched with the slide rail. Two driving cylinders are relatively arranged on the mounting plate, and the two driving cylinders correspond to the two mounting seats one by one. The ends of the driving cylinders are connected to the corresponding mounting seats. A first motor is provided on the mounting seat, and the first motor drives the mounting plate to rotate.

[0010] By adopting the above technical solution, when the sphere is fixed, the driving cylinder drives the mounting seat to slide, the two grinding discs abut against the sphere, and then the first motor drives the mounting disc to rotate, and at the same time the connecting rod drives the sphere to rotate, thereby realizing the grinding operation of the sphere.

[0011] Preferably, a driving disk is rotatably provided on the machine body, a first connecting rod is eccentrically provided on the driving disk, one end of the first connecting rod is hinged to the driving disk, and the other end of the first connecting rod is hinged to the mounting plate.

[0012] By adopting the above technical solution, the driving disk rotates. Since the first connecting rod and the driving disk are eccentrically arranged, the first connecting rod drives the mounting seat to swing back and forth, that is, the grinding disk swings, and the grinding disk can completely grind the surface of the sphere.

[0013] Preferably, the driving assembly includes a driving wheel, a second connecting rod, a first rack, a driving gear and a second rack, a mounting groove is opened in the mounting plate, the driving wheel is rotatably connected in the mounting groove, a plurality of second connecting rods are eccentrically arranged on the driving wheel, the number of the second connecting rods is the same as the number of the clamping plates and corresponds one to one, one end of the second connecting rod is hinged to the driving wheel, the first rack slides in the mounting plate, the number of the first racks is the same as the number of the second connecting rods and corresponds one to one, the other end of the second connecting rod is hinged to the first rack, the driving gear is rotatably connected in the mounting plate, the first rack is meshed with the driving gear, the number of the second racks is the same as the number of the first racks and corresponds one to one, the second rack is meshed with the driving gear and is located on a side away from the first rack, the second rack slides in the mounting plate, the second rack is fixedly connected to the corresponding clamping plate, and a rotating assembly that drives the driving wheel to rotate is provided in the mounting plate.

[0014] By adopting the above technical solution, the driving wheel rotates. Due to the eccentric arrangement of the second connecting rod and the driving wheel, the second connecting rod drives the first rack to slide. The first rack drives the driving gear to rotate, thereby driving the second rack to slide. The sliding of the second rack can drive the clamping plate to slide. The sliding of the clamping plate can change the size of the clamping gap to adapt to the outer diameter of the grinding disc.

[0015] Preferably, the rotating assembly includes a worm wheel, a worm and a driving member for driving the worm to rotate, the worm wheel is coaxially fixed with the driving wheel, the worm is rotatably connected in the mounting groove, and the worm is meshed with the worm wheel.

[0016] By adopting the above technical solution, the driving member drives the worm to rotate, the worm drives the worm wheel to rotate, and the worm wheel drives the driving wheel to rotate, so that the sliding of the clamping plate can be achieved.

[0017] Preferably, the driving member is configured as a driving rod, a threaded portion and a hand-holding portion are formed on the driving rod, the threaded portion of the driving rod is threadedly connected to the side of the mounting plate, a plug-in groove is formed at the end of the driving rod, a plug-in block is provided at the end of the worm gear, and the plug-in block is plugged and slidably matched with the plug-in groove.

[0018] By adopting the above technical solution, the staff can rotate the drive rod through the handheld part. Due to the insertion of the plug-in block and the plug-in slot, and the coaxial rotation cooperation, the rotation of the drive rod will synchronously drive the worm to rotate, thereby realizing the rotation of the worm wheel.

[0019] Preferably, a connecting sleeve is integrally formed on the side of the mounting plate away from the sphere, the first motor is connected to the reducer, the reducer is provided with an output shaft, the output shaft is plugged into the connecting sleeve and forms a coaxial rotation fit, a connecting block is integrally formed on the output shaft, a connecting groove is provided in the connecting sleeve along the length direction, the connecting block is plugged into the connecting groove and slides in fit, an abutment plate is integrally formed on the circumference of the output shaft, a return spring is sleeved on the output shaft, one end of the return spring is connected to the abutment plate, and the other end of the return spring is connected to the connecting sleeve; A plurality of first ratchet teeth are distributed along the length direction at the end of the output shaft, a sliding groove is provided on the inner wall of the connecting sleeve, the connecting sleeve is slidably connected with a locking plate in the sliding groove, a compression spring is provided in the connecting sleeve in the sliding groove, one end of the compression spring is connected to the locking plate, and the other end of the compression spring is connected to the inner wall of the sliding groove; a rotating column is hinged on the locking plate through a torsion spring, a second ratchet is fixedly connected to the rotating column, the second ratchet is meshed with the first ratchet, and a locking piece for limiting the rotation of the rotating column is provided in the mounting disk.

[0020] By adopting the above technical solution, after the sphere is fixed, the grinding disc is placed in the clamping gap for clamping and fixing. At this time, the locking piece locks the rotating column, and the rotating column cannot rotate, that is, the second ratchet cannot rotate; then the driving cylinder drives the mounting seat to slide, and the grinding disc will first contact the sphere. If the size of the sphere becomes larger, and the stroke of the driving cylinder piston rod remains unchanged, the output shaft will slide relative to the connecting sleeve, and the first ratchet and the second ratchet will mesh. During the sliding process of the output shaft, the second ratchet will slide into the sliding groove to avoid the movement of the first ratchet. When the output shaft finishes moving, the first ratchet and the second ratchet mesh, and under the action of the reset spring, the output shaft and the connecting sleeve can be prevented from subsequent relative movement, which affects the grinding effect; the output shaft and the connecting sleeve are connected by plug-in cooperation with the connecting block and the connecting groove. The coaxial rotation of the sleeve drives the grinding disc to rotate synchronously; when the grinding is completed, the mounting seat drives the grinding disc to disengage from the sphere. If the spheres of the same specification are to be processed, the grinding disc does not need to be removed; when spheres of different specifications need to be processed, the grinding disc is removed, and at the same time, the locking piece releases the lock on the rotating column. Under the action of the reset spring, the output shaft will slide outward. At this time, the movement of the first ratchet will drive the second ratchet to rotate to avoid the slippage of the first ratchet. After the second ratchet is disengaged from the first ratchet, it is reset under the action of the torsion spring; because the lateral diameters of different spheres are also different, the relative slip between the output shaft and the connecting sleeve is also different. The lock between the output shaft and the connecting sleeve is released by rotating the second ratchet, so that when dealing with spheres of different sizes in the future, the relative displacement of the output shaft and the connecting sleeve can adapt to changes.

[0021] Preferably, a connecting shaft is rotatably connected in the installation groove, the driving wheel and the worm gear are coaxially fixed on the connecting shaft, a screw rod portion is formed on the side of the connecting shaft close to the connecting sleeve, and a moving block is threadedly connected to the screw rod portion, and the moving block is provided with a follow-up groove, and the locking member is provided as a locking rod, and the locking rod slides in the following groove, and the moving block is provided with an abutment spring located in the following groove, one end of the abutment spring is connected to the locking rod, and the other end of the abutment spring is connected to the inner wall of the following groove; the sliding direction of the locking rod is consistent with the sliding direction of the locking plate; a locking groove is provided on the rotating column, and when the driving rod is rotated to make the three clamping plates clamp the grinding disc, the connecting shaft rotates, and the moving block slides to the side close to the connecting sleeve, and the locking rod is plugged into the locking groove to form a lock.

[0022] By adopting the above technical solution, the grinding disc is placed in the clamping gap, and then the driving rod is rotated to make the three clamping plates slide toward each other to clamp and fix the grinding disc, the driving rod drives the worm to rotate, and the worm drives the worm wheel to rotate, that is, drives the connecting shaft to rotate, and when the screw rod part on the connecting shaft rotates, it will drive the moving block to slide to one side of the connecting sleeve, and when the moving block slides, it drives the locking rod to engage with the locking groove to lock the rotation of the locking rod; then the mounting seat slides to make the grinding disc contact with the surface of the sphere, if the size of the sphere is large, then after the grinding disc contacts with the sphere, the output shaft will continue to slide relative to the connecting sleeve, at this time, the first ratchet acts on the second ratchet, and the locking plate slides into the sliding groove to avoid the sliding of the first ratchet, and finally the first ratchet and the second ratchet are meshed, and when the reset spring When the drive rod is reversed, the connecting sleeve slides in the direction away from the output shaft, and due to the action of the torsion spring, the first ratchet tooth does not slide continuously and smoothly, that is, the movement of the mounting plate is stop-motion, to prevent the worker from moving too fast and getting injured when removing the grinding plate.

[0023] In summary, the present application includes at least one of the following beneficial technical effects: 1. By sliding the three clamping plates and changing the size of the clamping gap, grinding discs of different sizes can be adapted to meet the grinding operations of balls of different sizes, which has strong applicability; 2. During grinding, the grinding disc swings back and forth, which can increase the grinding coverage of the ball and improve the grinding efficiency; 3. Because the stroke of the driving cylinder will be adjusted in advance, that is, the stroke will remain unchanged afterwards, when processing a larger sphere, the grinding disc will first abut against the sphere, and then the output shaft will slide relative to the connecting sleeve, and the first ratchet and the second ratchet will lock the two, so that the adaptive adjustment can be automatically performed according to the size of the sphere. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the ball valve ball; Figure 2 It is a schematic diagram of the overall structure of an embodiment of the present application; Figure 3 It is a partial structural schematic diagram of an embodiment of the present application; Figure 4 This is a schematic cross-sectional view of the mounting plate in the embodiment of the present application, which mainly reflects the structure of the driving assembly; Figure 5 It is a partial structural schematic diagram of an embodiment of the present application, mainly showing the structure of the rotating assembly; Figure 6 for Figure 5 A partial enlarged view of middle A; Figure 7 This is a schematic cross-sectional structural diagram of a connecting sleeve in an embodiment of the present application; Figure 8 for Figure 7 A partial enlarged view of B in the middle; Fig. 9 This is a partial structural diagram of an embodiment of the present application, which mainly reflects the structure of the follower slot and the locking rod; Fig.10 This is a partial structural diagram of an embodiment of the present application, which mainly reflects the structure of the rotating column and the locking groove.

[0025] 1. Body; 11. Connecting rod; 12. Liquid outlet pipe; 2. Fixing plate; 21. Driving plate; 211. First connecting rod; 22. Second motor; 23. Support plate; 24. Guide rod; 25. Guide seat; 26. Screw rod; 261. Hand wheel; 3. Abutting rod; 4. Mounting plate; 41. Mounting seat; 42. Slide rail; 43. Driving cylinder; 44. First motor; 45. Speed ​​reducer; 5. Mounting plate; 51. Grinding plate; 52. Inner groove; 53. Clamping plate; 531. Clamping gap; 54. Mounting groove; 55. Connecting shaft; 551. Screw rod portion; 56. First slide groove; 57. Accommodating groove; 58. Second slide groove; 6. Output shaft; 61. Connecting block; 62. Abutting plate; 6 3. reset spring; 64. first ratchet; 7. drive assembly; 71. drive wheel; 72. second connecting rod; 73. first rack; 74. drive gear; 75. second rack; 8. rotating assembly; 81. worm gear; 82. worm; 821. plug-in block; 83. drive rod; 831. threaded portion; 832. hand-held portion; 833. plug-in slot; 9. connecting sleeve; 91. connecting slot; 92. sliding slot; 921. compression spring; 10. locking plate; 20. rotating column; 201. second ratchet; 202. locking slot; 30. moving block; 301. follower slot; 302. abutment spring; 40. locking rod; 50. body; 60. abutment plane; 70. plug interface; 80. flow channel. DETAILED DESCRIPTION

[0026] The following combination Figure 2-Figure 10 This application is described in further detail.

[0027] The embodiment of the present application discloses an automatic grinding device for a ball valve ball.

[0028] Reference Figure 2 The automatic grinding device for the ball of a ball valve comprises a machine body 1, on which a plug-in rod 11 is rotatably arranged in a vertical direction, and the plug-in rod 11 is driven to rotate by a motor, and the plug-in rod 11 is plugged with the plug-in interface of the ball to form a coaxial rotation. A fixing plate 2 is fixedly connected to the machine body 1, and an abutment rod 3 is lifted and lowered on the fixing plate 2 located on the upper side of the plug-in rod 11. When the ball is plugged with the plug-in rod 11, the abutment rod 3 descends and abuts against the abutment plane of the ball; a mounting plate 4 is swingably arranged on the machine body 1, and two mounting seats 41 are relatively slidably arranged on the mounting plate 4, and mounting discs 5 are rotatably arranged on the two mounting seats 41, and a grinding disc 51 is detachably connected to the mounting disc 5.

[0029] By replacing different grinding discs 51 to match the size of the sphere, grinding operations can be performed on spheres of various specifications. First, the sphere is plugged into the plug-in rod 11, and then the abutment rod 3 is lowered to abut against the abutment plane of the sphere to limit the sphere in the vertical direction, and then the two mounting seats 41 slide toward each other, and the grinding disc 51 abuts against the surface of the sphere, and then the plug-in rod 11 rotates to drive the sphere to rotate, and at the same time, the mounting disc 5 drives the grinding disc 51 to rotate, and the mounting plate 4 swings back and forth to achieve the grinding of the sphere surface.

[0030] A liquid outlet pipe 12 is fixedly mounted on the body 1. The liquid outlet pipe 12 is located on the upper side of the sphere, and the liquid outlet of the liquid outlet pipe 12 faces the edge of the sphere abutting the plane. Before the grinding operation, the liquid outlet pipe 12 drips the grinding liquid on the surface of the sphere, and the plug-in rod 11 drives the sphere to rotate so that the grinding liquid can cover the surface of the sphere, and then the grinding operation is performed. And during the grinding process, the grinding liquid will continue to drip onto the sphere surface to ensure the grinding effect.

[0031] A slide rail 42 is provided on the mounting plate 4 along the length direction, and the mounting seat 41 and the slide rail 42 are slidably matched. Two driving cylinders 43 are installed on the mounting plate 4, and the two driving cylinders 43 are arranged opposite to each other. The two driving cylinders 43 and the two mounting seats 41 correspond one to one. The piston rod ends of the driving cylinders 43 are fixedly connected to the corresponding mounting seats 41. A first motor 44 is installed on the mounting seat 41, and the power shaft of the first motor 44 is connected to the reducer 45. The reducer 45 is formed with an output shaft 6, and the output shaft 6 drives the mounting plate 5 to rotate.

[0032] After the sphere is fixed, the two driving cylinders 43 operate synchronously, and the two mounting seats 41 slide toward each other, so that the grinding disc 51 abuts against the surface of the sphere. Then the first motor 44 operates to drive the mounting disc 5 to rotate, that is, the two grinding discs 51 rotate, and at the same time, the connecting rod 11 drives the sphere to rotate, thereby realizing the grinding operation on the surface of the sphere.

[0033] The mounting plate 4 is rotatably connected to the machine body 1, and the fixed plate 2 is rotatably connected to the driving disk 21. The fixed plate 2 is also equipped with a second motor 22. The second motor 22 drives the driving disk 21 to rotate. The driving disk 21 is hinged with a first connecting rod 211, and the hinge point is eccentrically set with the center of the driving disk 21. The end of the first connecting rod 211 away from the driving disk 21 is hinged with the mounting plate 4. The hinge point of the first connecting rod 211 and the mounting plate 4 is also eccentrically set, and the first connecting rod 211 can only drive the mounting plate 4 to move up and down. The second motor 22 drives the driving disk 21 to rotate, and the mounting plate 4 can be driven to swing back and forth through the first connecting rod 211.

[0034] The fixing plate 2 is fixedly connected to the support plate 23, and a guide rod 24 is installed on the support plate 23 in the vertical direction. A guide seat 25 is slidably connected to the guide rod 24, and the abutment rod 3 is arranged at the lower side of the guide seat 25. A screw rod 26 is also rotatably connected to the support plate 23, and the guide seat 25 is threadedly connected to the screw rod 26. A hand wheel 261 is installed on the upper end of the screw rod 26. By rotating the hand wheel 261, the screw rod 26 is driven to rotate, and the guide seat 25 slides in the vertical direction, so that the abutment rod 3 can be lifted and lowered.

[0035] Reference Figure 2 , Figure 3 and Figure 4 The mounting plate 5 is recessed inward to form an inner groove 52. The mounting plate 5 is located on the side wall of the inner groove 52 and has three clamping plates 53 arranged in a circumferential array. A clamping gap 531 for clamping the grinding plate 51 is formed between the three clamping plates 53. The mounting plate 5 is provided with a driving component 7 for driving the three clamping plates 53 to slide synchronously.

[0036] The driving assembly 7 includes a driving wheel 71, a second connecting rod 72, a first rack 73, a driving gear 74 and a second rack 75. A mounting groove 54 is provided in the mounting plate 5. The mounting plate 5 is located in the mounting groove 54 and is rotatably connected to a connecting shaft 55. The driving wheel 71 is coaxially fixed on the connecting shaft 55. The second connecting rod 72, the first rack 73, the driving gear 74 and the second rack 75 are each provided with three and each corresponds to the three clamping plates 53. One group is taken as an example for explanation. One end of the second connecting rod 72 is hinged to the driving wheel 71, and the hinge point is eccentric to the center of the driving wheel 71. A first slide groove 56 is also provided in the mounting plate 5. The first slide groove 56 is connected to the mounting groove 54. The first rack 73 slides in the first slide groove 56. The other end of the second connecting rod 72 It is hinged with the end of the first rack 73; a receiving groove 57 is also provided in the mounting plate 5, and the receiving groove 57 is communicated with the lower side of the first slide groove 56, the driving gear 74 is rotatably connected in the receiving groove 57, and the first rack 73 is meshed with the driving gear 74, and a second slide groove 58 is also provided in the mounting plate 5, the second slide groove 58 is communicated with the receiving groove 57, and the second slide groove 58 is located on the side of the receiving groove 57 away from the first slide groove 56, the second rack 75 slides in the second slide groove 58, that is, the second rack 75 is located on the side of the driving gear 74 away from the first gear, the second rack 75 is meshed with the driving gear 74, and the end of the second rack 75 passes through the mounting plate 5 and is fixedly connected to the clamping plate 53; a rotating component 8 is provided in the mounting plate 5 for driving the driving wheel 71 to rotate.

[0037] The grinding disc 51 is placed into the clamping gap 531, and then the rotating assembly 8 drives the driving wheel 71 to rotate. The driving wheel 71 drives the first rack 73 to slide through the second connecting rod 72. The first rack 73 drives the driving gear 74 to rotate. The driving gear 74 drives the second rack 75 to slide, thereby realizing the sliding of the clamping plate 53 to change the size of the clamping gap 531.

[0038] Reference Figure 4 , Figure 5 and Figure 6 The rotating assembly 8 includes a worm wheel 81, a worm 82 and a driving member for driving the worm 82 to rotate. The worm wheel 81 is coaxially fixed on the connecting shaft 55. The worm 82 is rotatably connected in the mounting groove 54, and the worm 82 is meshed with the worm wheel 81. The driving member is set as a driving rod 83. The driving rod 83 is formed with a threaded portion 831 and a handheld portion 832. The threaded portion 831 of the driving rod 83 is threadedly connected with the side of the mounting plate 5. The end of the driving rod 83 is formed with a plug-in groove 833. The end of the worm 82 is integrally formed with a plug-in block 821. The plug-in groove 833 and the plug-in block 821 are plugged and slidably matched and form a coaxial rotation match. The staff holds the handheld portion 832 and rotates the driving rod 83. The plug-in groove 833 of the driving rod 83 will drive the worm 82 to rotate through the plug-in block 821, and the worm 82 drives the worm wheel 81 to rotate. The worm wheel 81 realizes the rotation of the driving wheel 71 through the connecting shaft 55. Furthermore, due to the self-locking performance of the worm wheel 81 and the worm 82 , the clamping plate 53 can be prevented from moving during the grinding process, thereby ensuring the clamping stability of the grinding disc 51 .

[0039] Reference Figure 3 and Figure 7 A connecting sleeve 9 is integrally formed on the side of the mounting plate 5 away from the sphere. The output shaft 6 of the reducer 45 is plugged and matched with the connecting sleeve 9 to form a coaxial rotation fit. A connecting block 61 is integrally formed on the peripheral side of the output shaft 6. A connecting groove 91 is provided on the inner wall of the connecting sleeve 9 along the length direction. The connecting block 61 is plugged and slidably matched with the connecting groove 91. Under the cooperation of the connecting block 61 and the connecting groove 91, the connecting block 61 and the connecting sleeve 9 form a coaxial rotation fit. An abutment plate 62 is integrally formed on the peripheral side of the output shaft 6. The abutment plate 62 is located on the side of the connecting block 61 away from the connecting sleeve 9. A reset spring 63 is sleeved on the output shaft 6. One end of the reset spring 63 is connected to the abutment plate 62, and the other end of the reset spring 63 is connected to the outer end of the connecting sleeve 9. A plurality of first ratchet teeth 64 are fixedly connected to the end of the output shaft 6 along the length direction.

[0040] Reference Figure 7 and Figure 8A sliding groove 92 is provided on the inner wall of the connecting sleeve 9, and the connecting sleeve 9 is located in the sliding groove 92 and is slidably matched with a locking plate 10. A compression spring 921 is provided in the sliding groove 92 of the connecting sleeve 9, and one end of the compression spring 921 is connected to the locking plate 10, and the other end of the compression spring 921 is connected to the inner wall of the sliding groove 92; a rotating column 20 is rotatably connected to the locking plate 10 through a torsion spring, and a second ratchet 201 is fixedly connected to the rotating column 20, and the first ratchet 64 and the second ratchet 201 cooperate, and a locking member for limiting the rotation of the rotating column 20 is provided in the mounting disk 5.

[0041] After the ball is fixed, the grinding disc 51 is installed in the clamping gap 531. At this time, the locking member locks the rotating column 20. At this time, the first ratchet 64 can only slide relative to the second ratchet 201 in one direction, and can only slide in the direction of the connecting sleeve 9. If the size of the ball is large, after the grinding disc 51 contacts the surface of the ball, the moving stroke of the driving cylinder 43 has not ended, that is, the output shaft 6 will slide relative to the connecting sleeve 9. At this time, under the action of the first ratchet 64, the locking plate 10 slides into the sliding groove 92, so that the second ratchet 201 avoids the sliding of the first ratchet 64; when the stroke of the piston rod of the driving cylinder 43 ends, the first ratchet 64 and the second ratchet 201 are meshed, and under the action of the reset spring 63, the bite force of the first ratchet 64 and the second ratchet 201 is tighter, preventing displacement between the first ratchet 64 and the second ratchet 201 during the grinding process, thereby reducing the grinding effect. When processing a ball of the same specification, there is no need to remove the grinding disc 51 later. Keeping this state, the grinding operation on the ball can be repeated. When the size of the ball changes, the grinding disc 51 needs to be removed, and the locking member releases the lock on the rotating column 20. Then, under the action of the reset spring 63, the connecting sleeve 9 slides relative to the output shaft 6. At this time, the first ratchet 64 drives the second ratchet 201 to rotate to ensure the reset between the output shaft 6 and the connecting sleeve 9. When the first ratchet 64 and the second ratchet 201 are disengaged, the second ratchet 201 is reset under the action of the torsion spring, and then the replaced grinding disc 51 is clamped, and the rotating column 20 is locked at the same time, so that the first ratchet 64 and the second ratchet 201 form a one-way sliding fit.

[0042] Reference Figure 7 and Fig. 9A screw rod portion 551 is formed on one side of the connecting shaft 55 close to the connecting sleeve 9. The connecting shaft 55 is threadedly connected to the moving block 30 at the screw rod portion 551. The moving block 30 is provided with a follower groove 301. The locking member is provided as a locking rod 40. The locking rod 40 slides in the follower groove 301. The follower groove 301 is a T-shaped groove. A T-shaped block that slides with the T-shaped groove is formed at the end of the locking rod 40. The moving block 30 is provided with an abutting spring 302 in the follower groove 301. One end of the abutting spring 302 abuts against the locking rod 40, and the other end of the abutting spring 302 is connected to the inner wall of the follower groove 301. The sliding direction of the locking rod 40 is consistent with the sliding direction of the locking plate 10, and the length direction of the locking rod 40 is consistent with the length direction of the connecting shaft 55.

[0043] Reference Figure 7 and Fig.10 The rotating column 20 is provided with a locking groove 202. In the initial state, the locking groove 202 is arranged horizontally. When the driving rod 83 is rotated to make the three clamping plates 53 clamp the grinding disc 51, the connecting shaft 55 rotates, driving the moving block 30 to slide toward one side of the connecting sleeve 9. The locking rod 40 is plugged into the locking groove 202 to lock the rotation of the rotating column 20. The connecting sleeve 9 is also provided with an avoidance groove on one side of the sliding groove 92 to avoid the sliding of the locking rod 40.

[0044] When installing the grinding disc 51, the driving rod 83 rotates, the worm 82 drives the worm wheel 81 to rotate, and then drives the connecting shaft 55 to rotate. The connecting shaft 55 drives the moving block 30 to slide, and the locking rod 40 is plugged into the locking groove 202 to lock the rotating column 20. After that, the mounting seat 41 slides, the grinding disc 51 first contacts the ball, and then the output shaft 6 moves relative to the connecting sleeve 9. At this time, the first ratchet 64 acts on the second ratchet 201, and the locking plate 10 drives the second ratchet 201 to slide into the sliding groove 92 to avoid the second ratchet 201. At this time, the locking rod 40 will slide synchronously with the rotating column 20, and the avoidance groove avoids the sliding path of the locking rod 40. When the output shaft 6 finishes moving, under the action of the abutment spring 302 and the compression spring 921, the locking plate 10 is reset, and the first ratchet 64 and the second ratchet 201 are meshed. When the grinding disc 51 needs to be replaced, the driving rod 83 is reversed to a smaller angle, and the grinding disc 51 is loosened between the three clamping plates 53 and can be removed. Then the driving rod 83 is continued to be rotated until it cannot be rotated. During this process, the locking rod 40 is disengaged from the locking groove 202, and then under the action of the reset spring 63, the connecting sleeve 9 and the output shaft 6 are relatively slipped and reset, that is, before the connecting sleeve 9 and the output shaft 6 are relatively slipped, the grinding disc 51 can be removed, and the mounting disc 5 will not slip when the grinding disc 51 is removed, causing injuries to the staff. Even if the mounting disc 5 is displaced during the removal of the grinding disc 51, the first ratchet 64 drives the second ratchet 201 to rotate, and each time a tooth on the first ratchet 64 is passed, the second ratchet 201 will be reset under the action of the torsion spring, that is, the sliding of the mounting disc 5 is paused, not smooth sliding, which can also prevent the mounting disc 5 from moving too fast and affecting the removal work of the staff.

[0045] The implementation principle of the automatic grinding device for a ball valve ball of the present application embodiment is as follows: when grinding the ball, first plug the ball into the plug-in rod 11, and place the corresponding grinding disc 51 into the clamping gap 531. The staff rotates the driving rod 83 through the handheld portion 832, and the driving rod 83 drives the worm 82 to rotate. The worm 82 realizes the rotation of the connecting shaft 55 through the worm 82. The connecting shaft 55 drives the driving wheel 71 to rotate. The driving wheel 71 drives the first rack 73 to slide through the second connecting rod 72. The first rack 73 drives the second rack 75 to slide through the driving gear 74, so as to realize the relative sliding of the three clamping plates 53, thereby realizing the centering clamping of the grinding disc 51. While the connecting shaft 55 rotates, the moving block 3 0 will slide on the screw part 551, the locking rod 40 is plugged into the locking groove 202 and locks the rotating column 20; then the two mounting seats 41 slide towards each other, the grinding disc 51 contacts the surface of the ball, if the moving stroke of the mounting seat 41 is not completed, the output shaft 6 will slide relative to the connecting sleeve 9, at this time, the second ratchet 201 forms a one-way sliding restriction on the first ratchet 64, and the output shaft 6 can continue to slide until the moving stroke is completed; finally, the mounting seat 41 swings back and forth, the grinding disc 51 rotates, and the ball rotates, so that the grinding operation on the surface of the ball can be achieved; through the cooperation of the three clamping plates 53, the grinding discs 51 of different specifications can be replaced to adapt to the grinding of balls of different sizes, that is, the applicability of the grinding equipment is stronger.

[0046] If it is necessary to process spheres of different specifications later, it is necessary to reverse the drive rod 83 to remove the grinding disc 51. Due to the change in the size of the sphere, the moving distance of the mounting disc 5 will change, that is, the relative position between the connecting sleeve 9 and the output shaft 6 will change; when the drive rod 83 is reversed, the locking rod 40 will disengage from the locking groove 202. At this time, under the action of the reset spring 63, the output shaft 6 and the connecting sleeve 9 will slide relative to each other. At this time, the first ratchet 64 will drive the second ratchet 201 to rotate to achieve a smooth disengagement of the two. When the first ratchet 64 and the second ratchet 201 are disengaged, the second ratchet 201 is reset under the action of the torsion spring; then a new grinding disc 51 can be installed, and the above installation process can be repeated.

[0047] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An automatic grinding device for a ball valve ball, comprising a body (1), wherein the body (1) is rotatably provided with a plug-in rod (11), wherein the plug-in rod (11) is vertically arranged, and the plug-in rod (11) is plugged into a plug-in interface of the ball and forms a coaxial rotation, wherein: The machine body (1) is provided with an abutment rod (3) on the upper side of the plug-in rod (11) and is in lifting and lowering motion. The abutment rod (3) abuts against the abutment plane of the sphere. A mounting plate (4) is swingably provided on the machine body (1). Two mounting seats (41) are relatively slidably provided on the mounting plate (4). A mounting disk (5) is rotatably provided on the mounting seat (41). A grinding disk (51) is detachably connected to the mounting disk (5). Three clamping plates (53) are provided along the circumference of the inner side of the mounting disk (5). A clamping gap (531) for clamping the grinding disk (51) is formed between the three clamping plates (53). A driving component (7) for driving the three clamping plates (53) to slide synchronously is provided on the mounting disk (5).

2. The automatic grinding device for ball valve balls according to claim 1, characterized in that: The machine body (1) is also provided with a liquid outlet pipe (12), the liquid outlet pipe (12) is located on the upper side of the sphere, and the liquid outlet of the liquid outlet pipe (12) faces the edge of the sphere abutting plane.

3. The automatic grinding device for ball valve balls according to claim 1 is characterized in that: The mounting plate (4) is provided with a slide rail (42), the mounting seat (41) is slidably matched with the slide rail (42), two driving cylinders (43) are relatively arranged on the mounting plate (4), the two driving cylinders (43) correspond to the two mounting seats (41) one by one, the ends of the driving cylinders (43) are connected to the corresponding mounting seats (41), and the mounting seat (41) is provided with a first motor (44), and the first motor (44) drives the mounting plate (5) to rotate.

4. The automatic grinding device for a ball valve according to claim 1, characterized in that: A driving disk (21) is rotatably arranged on the machine body (1), a first connecting rod (211) is eccentrically arranged on the driving disk (21), one end of the first connecting rod (211) is hinged to the driving disk (21), and the other end of the first connecting rod (211) is hinged to the mounting plate (4).

5. The automatic grinding device for ball valve balls according to claim 3 is characterized in that: The driving assembly (7) comprises a driving wheel (71), a second connecting rod (72), a first rack (73), a driving gear (74) and a second rack (75); a mounting groove (54) is provided in the mounting plate (5); the driving wheel (71) is rotatably connected in the mounting groove (54); a plurality of second connecting rods (72) are eccentrically arranged on the driving wheel (71); the number of the second connecting rods (72) is the same as the number of the clamping plates (53) and corresponds one to one; one end of the second connecting rod (72) is hinged to the driving wheel (71); the first rack (73) slides in the mounting plate (5); the number of the first rack (73) is the same as the number of the second connecting rods (72); The second rack (75) and the first rack (73) are identical and correspond one to one. The other end of the second connecting rod (72) is hinged to the first rack (73). The driving gear (74) is rotatably connected in the mounting plate (5). The first rack (73) is meshed with the driving gear (74). The number of the second racks (75) is the same as the number of the first racks (73) and corresponds one to one. The second rack (75) is meshed with the driving gear (74) and is located on a side away from the first rack (73). The second rack (75) slides in the mounting plate (5). The second rack (75) is fixedly connected to the corresponding clamping plate (53). A rotating assembly (8) for driving the driving wheel (71) to rotate is arranged in the mounting plate (5).

6. The automatic grinding device for ball valve balls according to claim 5, characterized in that: The rotating assembly (8) comprises a worm wheel (81), a worm (82) and a driving member for driving the worm (82) to rotate; the worm wheel (81) is coaxially fixed with the driving wheel (71); the worm (82) is rotatably connected in the mounting groove (54); and the worm (82) is meshed with the worm wheel (81).

7. The automatic grinding device for ball valve according to claim 6, characterized in that: The driving member is configured as a driving rod (83), and a threaded portion (831) and a hand-held portion (832) are formed on the driving rod (83). The threaded portion (831) of the driving rod (83) is threadedly connected to the side edge of the mounting plate (5), and a plug-in groove (833) is formed at the end of the driving rod (83). A plug-in block (821) is provided at the end of the worm (82), and the plug-in block (821) is plug-in and slidingly matched with the plug-in groove (833).

8. The automatic grinding device for ball valve balls according to claim 7, characterized in that: A connecting sleeve (9) is integrally formed on the side of the mounting plate (5) away from the sphere. The first motor (44) is connected to the reducer (45). The reducer (45) is provided with an output shaft (6). The output shaft (6) and the connecting sleeve (9) are plugged and coaxially rotated together. A connecting block (61) is integrally formed on the output shaft (6). A connecting groove (91) is provided in the connecting sleeve (9) along the length direction. The connecting block (61) and the connecting groove (91) are plugged and slideably matched. An abutment plate (62) is integrally formed on the peripheral side of the output shaft (6). A return spring (63) is sleeved on the output shaft (6). One end of the return spring (63) is connected to the abutment plate (62), and the other end of the return spring (63) is connected to the connecting sleeve (9); the output shaft (6 ) is provided with a plurality of first ratchet teeth (64) along the length direction at the end of the connecting sleeve (9), a sliding groove (92) is provided on the inner wall of the connecting sleeve (9), the connecting sleeve (9) is slidably connected with a locking plate (10) in the sliding groove (92), the connecting sleeve (9) is provided with a compression spring (921) in the sliding groove (92), one end of the compression spring (921) is connected to the locking plate (10), and the other end of the compression spring (921) is connected to the inner wall of the sliding groove (92); a rotating column (20) is hingedly connected to the locking plate (10) through a torsion spring, a second ratchet tooth (201) is fixedly connected to the rotating column (20), the second ratchet tooth (201) is meshed with the first ratchet tooth (64), and a locking member for limiting the rotation of the rotating column (20) is provided in the mounting plate (5).

9. The automatic grinding device for ball valve balls according to claim 8, characterized in that: A connecting shaft (55) is rotatably connected in the installation groove (54); the driving wheel (71) and the worm wheel (81) are coaxially fixed on the connecting shaft (55); a screw rod portion (551) is formed on a side of the connecting shaft (55) close to the connecting sleeve (9); a moving block (30) is threadedly connected to the screw rod portion (551) of the connecting shaft (55); a follower groove (301) is formed in the moving block (30); the locking element is configured as a locking rod (40); the locking rod (40) slides in the follower groove (301); and the moving block (30) is provided with an abutment spring in the follower groove (301). (302), one end of the abutment spring (302) is connected to the locking rod (40), and the other end of the abutment spring (302) is connected to the inner wall of the follower groove (301); the sliding direction of the locking rod (40) is consistent with the sliding direction of the locking plate (10); a locking groove (202) is provided on the rotating column (20), when the driving rod (83) is rotated to make the three clamping plates (53) clamp the grinding disc (51), the connecting shaft (55) rotates, the moving block (30) slides to the side close to the connecting sleeve (9), and the locking rod (40) is plugged into the locking groove (202) to form a lock.

Images