Equipment for detecting strength of shell of rotary speed reducer

Abstract

The invention relates to the technical field of rotary speed reducer detection, and discloses equipment for detecting the strength of a shell of a rotary speed reducer, the equipment comprises a hydraulic universal testing machine fixed on a fixed base, a feeding plate for placing the shell is arranged on the fixed base in a sliding manner, a side table is arranged on one side of the fixed base, and the side table is arranged on the other side of the fixed base. A lifting seat synchronously moving with the feeding plate is slidably arranged on the side table, a first cylinder is rotatably arranged in the lifting seat, a second cylinder is connected to the bottom of the first cylinder, and an arc-shaped plate is slidably arranged on the outer side of the second cylinder; the outer surface of the arc-shaped plate is provided with a grinding piece used for grinding a flange connecting hole of the shell. According to the technical scheme, when the grinding piece is inserted into the flange connecting hole of the shell, the grinding piece can expand outwards, so that the grinding piece is attached to the inner wall of the flange connecting hole, the inner wall of the whole flange connecting hole is ground through autorotation of the grinding piece, and the grinding efficiency is higher.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of detection of rotary speed reducer, in particular to a device for detecting the strength of the shell of rotary speed reducer. BACKGROUND

[0002] When the rotary speed reducer is produced, the strength of the shell needs to be detected. The existing strength detection equipment includes a hydraulic universal testing machine. The hydraulic universal testing machine is used for compression detection of the shell and measures the ultimate bearing capacity of the shell. When the shell of the rotary speed reducer is subjected to compression detection, the inner wall of the flange connecting hole on the shell must be polished and smoothed. This is because the unpolished hole wall may have burrs or micro-cracks, which will become stress concentration points under high pressure, thereby causing the shell to crack or fatigue failure, thereby affecting the detection.

[0003] When the existing equipment is used to detect the compression of the shell of the rotary speed reducer, a single hole is usually polished. Since the polishing piece is smaller than the inner diameter of the flange connecting hole, it can be inserted into the hole wall. Therefore, when polishing the hole wall, the polishing piece first contacts one side of the hole wall, so that the polishing piece rotates and revolves around the circumference of the hole wall to polish the hole wall. Therefore, the polishing can only be performed on one flange connecting hole, and then the other flange connecting hole is polished. The polishing efficiency is slow, thereby affecting the detection efficiency. SUMMARY

[0004] The present application provides a device for detecting the strength of the shell of the rotary speed reducer. After the polishing piece is inserted into the inner wall of the flange connecting hole, it can be expanded outward to fit the hole wall. The rotation of the polishing piece can complete the polishing of the hole wall, thereby facilitating the simultaneous polishing of multiple groups of flange connecting holes. The problem of slow polishing efficiency and the problem of affecting the detection efficiency are solved.

[0005] The present application provides the following technical scheme: a device for detecting the strength of the shell of the rotary speed reducer, comprising a hydraulic universal testing machine fixed on a fixed base, a feeding plate for placing the shell is slidably arranged on the fixed base, a side table is arranged on one side of the fixed base, a lifting seat that moves synchronously with the feeding plate is slidably arranged on the side table, a first cylinder is rotatably arranged in the lifting seat, a second cylinder is connected to the bottom of the first cylinder, an arc-shaped plate is slidably arranged on the outer side of the second cylinder, a polishing piece for polishing the flange connecting hole of the shell is arranged on the outer surface of the arc-shaped plate, a first core rod is slidably arranged in the lifting seat, a transmission assembly for driving the arc-shaped plate to expand outward is arranged between the first core rod and the second cylinder, and the polishing piece is fitted with the inner wall of the flange connecting hole by expanding outward.

[0006] As one optional scheme of the equipment for detecting the strength of the shell of the rotary speed reducer, the upper surface of the side table is provided with a slide, an elastic movement column is arranged in the slide, a lifting column is slidably arranged in the movement column, a connecting plate is fixed between the top of the lifting column and the lifting seat, a first limiting ball is fixed to the bottom end of the lifting column, and a first track groove is formed in the inside of the side table for the sliding of the first limiting ball.

[0007] As one optional scheme of the equipment for detecting the strength of the shell of the rotary speed reducer, a rotating groove is formed in the side wall of the second cylinder, a positioning frame is arranged in the rotating groove, and a winding roller for winding and unwinding the polishing sheet is elastically arranged on the positioning frame.

[0008] As one optional scheme of the equipment for detecting the strength of the shell of the rotary speed reducer, a lifting ring is slidably arranged in the inside of the lifting seat, the top end of the first core rod is rotatably connected with the lifting ring, a lifting rod is fixed to the outer surface of the lifting ring, a second core rod is fixed to the end of the lifting rod, a second limiting ball is fixed to the bottom end of the second core rod, and a second track groove is formed in the inside of the side table for the sliding of the second limiting ball.

[0009] As one optional scheme of the equipment for detecting the strength of the shell of the rotary speed reducer, a side plate is fixed to the outer surface of the movement column, an electric push rod is fixed to the side plate, a baffle for abutting against the feeding plate is fixed to the output end of the electric push rod, a fixed plate is fixed to the surface of the fixed base, a first servo motor is fixed to the outer surface of the fixed plate, a reciprocating screw rod is fixed to the output end of the first servo motor, the reciprocating screw rod is threadedly connected with the feeding plate, and a guide rail for the sliding of the feeding plate is fixed to the fixed base.

[0010] As one optional scheme of the equipment for detecting the strength of the shell of the rotary speed reducer, a gear ring is rotatably arranged in the inside of the lifting seat, a first gear meshing with the gear ring is fixed to the outer surface of the first cylinder, a second servo motor is fixed in the inside of the lifting seat, and a second gear meshing with the gear ring is fixed to the output end of the second servo motor.

[0011] As one optional scheme of the equipment for detecting the strength of the shell of the rotary speed reducer, the transmission assembly comprises a spiral groove formed in the outer surface of the first core rod, a convex column is fixed to the inner wall of the second cylinder and slidably arranged in the spiral groove, a first sliding rod is fixed to the inner surface of the arc-shaped plate, a first sliding groove is formed in the inner wall of the second cylinder for the sliding of the first sliding rod, a first sliding convex is fixed to the end of the first sliding rod, and a first inclined groove is formed in the inner wall of the first sliding groove for the sliding of the first sliding convex.

[0012] As an optional solution of the equipment for detecting the strength of the shell of the rotary speed reducer, the transmission assembly comprises a second sliding groove formed in the surface of the first core rod, the inner surface of the arc-shaped plate is fixed with a second sliding rod, the second sliding rod is in sliding connection with the second sliding groove, the end of the second sliding rod is fixed with a second sliding protrusion, and the inner wall of the second sliding groove is formed with a second inclined groove for the sliding of the second sliding protrusion.

[0013] As an optional solution of the equipment for detecting the strength of the shell of the rotary speed reducer, the top of the second cylinder is fixed with an insertion rod, the insertion rod is in sliding connection with the first cylinder, the bottom end of the insertion rod is fixed with a ring piece, the inside of the first cylinder is formed with a third sliding groove for the sliding of the ring piece, the inside of the third sliding groove is provided with a telescopic rod, the lower surface of the ring piece is in sliding connection with the telescopic rod, and the circumference of the telescopic rod is sleeved with a first spring.

[0014] As an optional solution of the equipment for detecting the strength of the shell of the rotary speed reducer, the inside of the lifting seat is rotationally provided with a third core rod, the third core rod penetrates through the lifting ring and the first cylinder and is inserted into the second cylinder, the surface of the positioning frame is fixed with a third sliding rod, the outer surface of the third core rod is formed with a fourth sliding groove for the sliding of the third sliding rod, the end of the third sliding rod is fixed with a third sliding protrusion, the inner wall of the fourth sliding groove is formed with a third inclined groove for the sliding of the third sliding protrusion, the end of the polishing piece is fixed with a sliding block, the sliding block is slidingly arranged in the inside of the arc-shaped plate, and the third spring is fixed between the sliding block and the inner wall of the arc-shaped plate.

[0015] The present application has the following advantages:

[0016] 1. In the equipment for detecting the strength of the shell of the rotary speed reducer, when the lifting seat moves downward synchronously with the feeding plate, a plurality of groups of polishing pieces are inserted into corresponding flange connection holes, then the second core rod drives the second limiting ball to slide along the second track groove, the first core rod is driven to move downward, the transmission assembly drives the arc-shaped plate to expand outward, the arc-shaped plate drives the polishing pieces to expand outward, so that the polishing pieces are attached to the inner wall of the flange connection hole, and the self-rotation of the polishing pieces can polish the hole wall as a whole, the polishing effect is better, the polishing efficiency is better by polishing a plurality of groups of flange connection holes at the same time, and the detection efficiency is improved.

[0017] 2. In the device for detecting the strength of the housing of the rotary speed reducer, when the inner wall of the flange connecting hole is polished by the polishing piece, the second core rod slides along the wave part of the second track groove, so that the second core rod can reciprocate up and down, the second core rod drives the first core rod to reciprocate up and down, the first core rod drives the second cylinder to reciprocate up and down, and the second cylinder drives the arc-shaped plate and the polishing piece to reciprocate up and down, so that the polishing piece can reciprocate up and down while rotating, thereby improving the polishing effect, and the burrs polished out of the hole wall can be conveniently taken out by the reciprocating movement of the polishing piece, thereby reducing the influence of the burrs on the polishing effect.

[0018] 3. In the device for detecting the strength of the housing of the rotary speed reducer, when the polishing piece reciprocates up and down, the second cylinder reciprocates up and down relative to the third core rod, the second cylinder drives the third sliding rod to slide in the fourth sliding groove, the third sliding rod drives the third sliding protrusion to slide along the third inclined groove, so that the third sliding rod can reciprocate left and right, the third sliding rod drives the positioning frame and the winding roller to reciprocate left and right, so that the winding roller drives the polishing piece to rotate clockwise and counterclockwise along the surface of the arc-shaped plate, so that the straight part and the arc part can alternate positions, thereby changing the position of the polishing piece on the arc-shaped plate, thereby increasing the use effect of the polishing piece and further improving the polishing effect. When the polishing piece reciprocates clockwise and counterclockwise along the arc-shaped plate, the polishing piece has a horizontal displacement relative to the inner wall of the flange connecting hole, so that the polishing effect is better. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is one of the schematic views of the three-dimensional structure of the present application.

[0020] Figure 2 It is the second schematic view of the three-dimensional structure of the present application.

[0021] Figure 3 It is a structural section view of the side table and the lifting seat part in the present application.

[0022] Figure 4 It is a plane structural schematic view of the first track groove and the second track groove part in the present application.

[0023] Figure 5 It is a structural schematic view of the inside of the lifting seat in the present application.

[0024] Figure 6 It is a structural schematic view of the polishing piece part in the present application. Figure 5

[0025] Figure 7 It is a structural section view of the first cylinder and the second cylinder part in the present application.

[0026] ​Figure 8 For the invention Figure 7 Enlarged view of A in the invention.

[0027] Figure 9 For the invention

[0028] Figure 10 For the invention

[0029] Figure 11 For the invention Figure 10 Enlarged view of B in the invention.

[0030] Figure 12 For the invention Structure sectional view of the first cylinder and the second cylinder part in the invention.

[0031] Figure 13 For the invention Figure 12 Enlarged view of C in the invention.

[0032] Figure 14 For the invention

[0033] Figure 15 For the invention Figure 14 Enlarged view of D in the invention.

[0034] In the figure: 1, fixed base; 2, hydraulic universal testing machine; 3, shell; 301, flange connection hole; 4, feeding plate; 5, side table; 6, lifting seat; 7, first cylinder; 8, second cylinder; 9, arc plate; 10, polishing piece; 101, straight bar part; 102, arc surface part; 11, first core rod; 12, transmission assembly; 1211, spiral groove; 1212, convex column; 1213, first sliding rod; 1214, first sliding groove; 1215, first sliding convex; 1216, first inclined groove; 1221, second sliding groove; 1222, second sliding rod; 1223, second sliding convex; 1224, second inclined groove; 13, slide; 14, moving column; 15, lifting column; 16, connecting plate; 17, first limiting ball; 18, first track groove; 181, first descending part; 182, first horizontal part; 183, first ascending part; 19, rotating groove; 20, positioning frame; 21, winding roller; 22, lifting rod; 23, second core rod; 24, second limiting ball; 25, second track groove; 251, second descending part; 252, third descending part; 253, wave part; 2531, fourth descending part; 2532, fourth ascending part; 254, second ascending part; 255, third ascending part; 26, side plate; 27, electric push rod; 28, baffle; 29, fixed plate; 30, first servo motor; 31, reciprocating screw rod; 32, guide rail; 33, gear ring; 34, first gear; 35, second servo motor; 36, second gear; 37, insertion rod; 38, ring piece; 39, third sliding groove; 40, telescopic rod; 41, first spring; 42, third core rod; 43, third sliding rod; 44, fourth sliding groove; 45, third sliding convex; 46, third inclined groove; 47, fixing piece; 48, second spring; 49, limiting groove; 50, limiting rod; 51, moving groove; 52, sliding block; 53, third spring; 54, lifting ring. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0036] Embodiment one, please refer to Figures 1-15The utility model provides a kind of equipment for detecting the strength of rotary reducer shell, including the hydraulic universal testing machine 2 fixed on fixed base 1, the feeding plate 4 for placing shell 3 is slidably arranged on fixed base 1, one side of fixed base 1 is provided with side table 5, synchronous motion lifting seat 6 is slidably arranged on side table 5 with feeding plate 4, first cylinder 7 is rotatably arranged in lifting seat 6, second cylinder 8 is connected to the bottom of first cylinder 7, arc plate 9 is slidably arranged on the outside of second cylinder 8, the outer surface of arc plate 9 is provided with grinding piece 10 for grinding flange connection hole 301 of shell 3, first core rod 11 is slidably arranged in lifting seat 6, transmission assembly 12 for driving arc plate 9 to expand outward is arranged between first core rod 11 and second cylinder 8, arc plate 9 expands outward to make grinding piece 10 adhere to the inner wall of flange connection hole 301; The upper surface of side table 5 is provided with slide 13, and moving column 14 is elastically arranged in slide 13. Lifting column 15 is slidably arranged in the inside of moving column 14. Connecting plate 16 is fixed between the top of lifting column 15 and lifting seat 6. First limiting ball 17 is fixed at the bottom end of lifting column 15. First track groove 18 is formed in the inside of side table 5 for sliding first limiting ball 17. The side wall of second cylinder 8 is provided with rotating groove 19, and positioning frame 20 is arranged in rotating groove 19. Winding roller 21 for winding and unwinding grinding piece 10 is elastically arranged on positioning frame 20. Lifting ring 54 is slidably arranged in the inside of lifting seat 6. The top end of first core rod 11 is rotatably connected with lifting ring 54. Lifting rod 22 is fixed on the outer surface of lifting ring 54. Second core rod 23 is fixed at the end of lifting rod 22. Second limiting ball 24 is fixed at the bottom end of second core rod 23. Second track groove 25 is formed in the inside of side table 5 for sliding second limiting ball 24. Side plate 26 is fixed on the outer surface of moving column 14. Electric push rod 27 is fixed on side plate 26. Baffle 28 for resisting feeding plate 4 is fixed at the output end of electric push rod 27. Fixed plate 29 is fixed on the surface of fixed base 1. First servo motor 30 is fixed on the outer surface of fixed plate 29. Reciprocating screw rod 31 is fixed at the output end of first servo motor 30. Reciprocating screw rod 31 is threadedly connected with feeding plate 4. Guide rail 32 for sliding feeding plate 4 is fixed on fixed base 1. Gear ring 33 is rotatably arranged in the inside of lifting seat 6. First gear 34 meshing with gear ring 33 is fixed on the outer surface of first cylinder 7. Second servo motor 35 is fixed in the inside of lifting seat 6. Second gear 36 meshing with gear ring 33 is fixed at the output end of second servo motor 35. The transmission assembly 12 includes a spiral groove 1211 opened on the outer surface of the first core rod 11, a boss 1212 is fixed on the inner wall of the second cylinder 8, the boss 1212 is slidably arranged in the spiral groove 1211, a first slide rod 1213 is fixed on the inner surface of the arc plate 9, a first slide groove 1214 for the first slide rod 1213 to slide is opened on the inner wall of the second cylinder 8, a first sliding protrusion 1215 is fixed to the end of the first slide rod 1213, and a first inclined groove 1216 for the first sliding protrusion 1215 to slide is opened on the inner wall of the first slide groove 1214.

[0037] In the present technical solution, a fixing member 47 is provided on the feed plate 4. The fixing member 47 can be a chuck for fixing the housing 3. The housing 3 of the rotary reducer is a circular wheel structure with a plurality of flange connection holes 301 provided thereon. The hydraulic universal testing machine 2 is used to perform a pressure test on the housing 3. The fixing member 47 and the hydraulic universal testing machine 2 are both prior arts and are not the innovation of the present application. They will not be described in detail. When testing the housing 3 of the rotary reducer, the housing 3 is first placed on the feed plate 4. A second spring 48 is fixed between the inside of the side platform 5 and the movable column 14. Figure 1 and Figure 2 , start the first servo motor 30, so that the first servo motor 30 drives the reciprocating screw 31 to rotate, and the reciprocating screw 31 drives the feed plate 4 to move to the right. At this time, due to the interference between the baffle 28 and the feed plate 4, the feed plate 4 drives the baffle 28 to move to the right synchronously, and the baffle 28 drives the moving column 14 to move to the right along the slide 13, and at the same time compresses the second spring 48 to store force in the second spring 48. When the moving column 14 slides to the right along the slide 13, the moving column 14 drives the lifting column 15 to move, and the lifting column 15 drives the first limit ball 17 to slide along the first track groove 18 The first track groove 18 includes a first descending portion 181, a first horizontal portion 182, and a first ascending portion 183 that are connected to each other. First, the first limiting ball 17 slides along the first descending portion 181, so that the first limiting ball 17 drives the lifting column 15 to move downward. The downward movement of the lifting column 15 drives the connecting plate 16 to move downward. The downward movement of the connecting plate 16 drives the lifting seat 6 to move downward. The downward movement of the lifting seat 6 drives the first cylinder 7, the second cylinder 8, the curved plate 9, and the grinding disc 10 to move downward synchronously until the grinding disc 10 is completely inserted into the flange connection hole 301 of the housing 3. When the moving column 14 moves to the right, the second core rod 23 also moves to the right, and the second core rod 23 drives the second limiting ball 24 to slide inside the second track groove 25, the second track groove 25 includes a second descending part 251, a third descending part 252, a wave part 253, a second ascending part 254 and a third ascending part 255 which are communicated, the track of the second descending part 251 is the same as that of the first descending part 181, so that when the second limiting ball 24 slides along the second descending part 251, the relative position of the second core rod 23 to the lifting column 15 does not change, then when the first limiting ball 17 slides along the first horizontal part 182, the second limiting ball 24 slides along the third descending part 252, so that the second core rod 23 moves downward relative to the lifting column 15, the downward movement of the second core rod 23 drives the lifting rod 22 to move downward, the lifting rod 22 drives the lifting ring 54 to move downward, the lifting ring 54 drives the first core rod 11 to move downward, the downward movement of the first core rod 11 causes the convex column 1212 to slide along the spiral groove 1211, which promotes the convex column 1212 to drive the second cylinder 8 to rotate clockwise by a certain angle relative to the first cylinder 7, when the second cylinder 8 rotates clockwise by a certain angle, as shown in Figure 10 and Figure 11 The first sliding rod 1213 slides along the first sliding groove 1214, the first sliding rod 1213 drives the first sliding protrusion 1215 to slide along the first inclined groove 1216, so that the first sliding rod 1213 pushes the arc-shaped plate 9 to move to the outside of the second cylinder 8, so that the arc-shaped plate 9 expands outward, at this time the outward expansion of the arc-shaped plate 9 will pull the abrasive sheet 10, which promotes the winding roller 21 to unwind the abrasive sheet 10, until the unwinding of the abrasive sheet 10 is completed and the abrasive sheet 10 cannot continue to be unwound, the end of the abrasive sheet 10 is fixed with the winding roller 21, at this time the outer surface of the abrasive sheet 10 expands to contact the inner wall of the flange connecting hole 301; Then, when the lifting seat 6 continues to move right synchronously with the feeding plate 4, the second servo motor 35 rotates, the second servo motor 35 drives the second gear 36 to rotate, the second gear 36 drives the gear ring 33 to rotate, the gear ring 33 drives the first gear 34 to rotate, the first gear 34 drives the second cylinder 8 to rotate, the second cylinder 8 drives the first cylinder 7 to rotate, the first cylinder 7 drives the arc-shaped plate 9 to rotate, the arc-shaped plate 9 drives the polishing piece 10 to rotate, so that the polishing piece 10 polishes the inner wall of the flange connecting hole 301, after the polishing is completed, the second limiting ball 24 slides along the second rising portion 254 and the third rising portion 255, so that the polishing piece 10 resets, the first limiting ball 17 slides along the first rising portion 183, so that the polishing piece 10 moves out of the flange connecting hole 301, then the electric push rod 27 drives the baffle 28 to retract, so that the baffle 28 moves away from one side of the feeding plate 4, and the baffle 28 is removed from the feeding plate 4, and then the second spring 48 is released, so that the moving column 14 drives the lifting seat 6 to reset, the feeding plate 4 continues to move right to the detection position of the hydraulic universal testing machine 2, the hydraulic universal testing machine 2 applies pressure to the shell 3, and the compression resistance detection of the shell 3 is completed, after the detection is completed, the shell 3 is discharged, the reciprocating screw rod 31 drives the feeding plate 4 to reset, after the feeding plate 4 resets, the electric push rod 27 pushes the baffle 28 to reset, the baffle 28 and the feeding plate 4 are in contact again, and the next shell 3 is detected; In the technical scheme, the lower surface of the first cylinder 7 is provided with a limiting groove 49, the top of the arc-shaped plate 9 is fixedly provided with a limiting rod 50, and the limiting rod 50 is slidably arranged in the limiting groove 49, so that when the second cylinder 8 rotates relative to the first cylinder 7 by a certain angle, the arc-shaped plate 9 cannot be driven to rotate, the arc-shaped plate 9 can only perform an outward expansion action, and the limiting rod 50 can only slide horizontally in the limiting groove 49, so that when the first cylinder 7 rotates, the second cylinder 8 and the arc-shaped plate 9 can be driven to rotate synchronously, in addition, the first core rod 11 can only slide up and down relative to the first cylinder 7 and the second cylinder 8, so that when the first cylinder 7 rotates, the first core rod 11 is also driven to rotate synchronously, so that the expansion state of the polishing piece 10 remains unchanged; the positioning frame 20 and the winding roller 21 are provided with a torsion spring, one end of the torsion spring is fixed to the inner wall of the positioning frame 20, and the other end of the torsion spring is fixed to the winding roller 21, so that when the winding roller 21 unwinds the polishing piece 10, the torsion spring stores energy, and when the arc-shaped plate 9 contracts inward, the torsion spring releases energy, so that the winding roller 21 reverses to wind the polishing piece 10; In the technical scheme, the polishing piece 10 and the flange connecting hole 301 on the shell 3 are provided in a corresponding number, so that multiple groups of flange connecting holes 301 on the shell 3 can be polished at the same time, and the polishing efficiency is higher.

[0038] In the technical scheme, the polishing piece 10 and the flange connecting hole 301 on the shell 3 are provided in a corresponding number, so that multiple groups of flange connecting holes 301 on the shell 3 can be polished at the same time, and the polishing efficiency is higher. Figures 1-15The transmission assembly 12 includes a second slide groove 1221 provided on the surface of the first core rod 11, a second slide rod 1222 is fixed to the inner surface of the arc-shaped plate 9, the second slide rod 1222 is slidably connected to the second slide groove 1221, a second sliding protrusion 1223 is fixed to the end of the second slide rod 1222, and a second inclined groove 1224 is provided on the inner wall of the second slide groove 1221 for the second sliding protrusion 1223 to slide; In this technical solution, if Figure 14 and Figure 15 As shown, when the lifting ring 54 moves downward, it drives the first core rod 11 to move downward, and the first core rod 11 moves downward, so that the second slide bar 1222 slides upward along the second slide groove 1221, and the second slide bar 1222 drives the second sliding protrusion 1223 to slide along the third inclined groove 46, so that the second sliding protrusion 1223 drives the second slide bar 1222 to extend from the second cylinder 8, and the second slide bar 1222 drives the curved plate 9 to move, so that the curved plate 9 expands outward, and the curved plate 9 drives the grinding sheet 10 to expand outward; In this technical solution, the connections between the first core rod 11, the second cylinder 8 and the first cylinder 7 will not rotate relative to each other, so that when the first cylinder 7 rotates, it can drive the second cylinder 8 and the first core rod 11 to rotate synchronously, thereby not affecting the grinding work of the grinding disc 10.

[0039] In the third embodiment, since the relative position of the grinding sheet 10 relative to the flange connection hole 301 does not change during grinding, the grinding sheet 10 cannot fully contact the inner wall of the flange connection hole 301, and the burrs polished out cannot be well discharged from the inside of the flange connection hole 301, resulting in a poor grinding effect. To address this problem, this embodiment is an improvement made on the basis of the first and second embodiments. For details, please refer to Figures 1-15 A plug rod 37 is fixed to the top of the second cylinder 8, and the plug rod 37 is slidably connected to the first cylinder 7. A ring piece 38 is fixed to the bottom end of the plug rod 37. A third sliding groove 39 is provided inside the first cylinder 7 for the ring piece 38 to slide. A telescopic rod 40 is provided inside the third sliding groove 39. The lower surface of the ring piece 38 is slidably connected to the telescopic rod 40, and a first spring 41 is sleeved on the circumference of the telescopic rod 40.

[0040] In the present technical solution, when the grinding disc 10 rotates to grind the inner wall of the flange connection hole 301, the first limiting ball 17 slides along the first horizontal portion 182 of the first track groove 18, and the second limiting ball 24 slides along the wave portion 253 of the second track groove 25, so that the second limiting ball 24 drives the second core rod 23 to reciprocate up and down, so that the second core rod 23 drives the lifting ring 54 to reciprocate up and down relative to the lifting seat 6. First, the second limiting ball 24 slides along the second descending portion 251 During sliding, a moving groove 51 is provided inside the second cylinder 8 for the first core rod 11 to slide. The first core rod 11 slides downward inside the moving groove 51, and drives the grinding sheet 10 to expand outward through the transmission assembly 12. After the grinding sheet 10 expands, the first core rod 11 slides to the bottom of the moving groove 51, so that the first core rod 11 conflicts with the moving groove 51. When the second limiting ball 24 slides along the wave portion 253, the wave portion 253 includes a fourth descending portion 2531 and a fourth ascending portion 253. 2. First, the second limiting ball 24 slides along the fourth descending portion 2531, causing the first core rod 11 to continue to move downward. Since the first core rod 11 contacts the bottom wall of the movable groove 51, when the first core rod 11 moves downward, it will drive the second cylinder 8 to move downward, and the second cylinder 8 drives the insertion rod 37 to move downward, and the insertion rod 37 drives the ring plate 38 to move downward. The ring plate 38 compresses the first spring 41, so that the first spring 41 accumulates force. When the second cylinder 8 moves downward, it drives the arc plate 9 to move downward, and the arc plate 9 drives the grinding sheet 10 to move downward. When the second limiting ball 24 slides along the fourth ascending portion 2532, the first spring 41 releases the force, causing the second cylinder 8 to return to its original position, thereby causing the grinding sheet 10 to move upward and return to its original position. Through the above process, when the grinding sheet 10 rotates to grind the inner wall of the flange connecting hole 301, the second limiting ball 24 slides along the wave portion 253, so that the grinding sheet 10 can perform a reciprocating motion up and down, which has a better grinding effect and is convenient for removing burrs. The telescopic rod 40 includes an inner rod and an outer rod. The inner rod can slide relative to the outer rod. The lower surface of the ring piece 38 is slidably connected to the inner rod, and the top of the first spring 41 is fixed to the outer surface of the inner rod. When the first spring 41 is compressed, the inner rod contracts into the inner part of the outer rod. When the first spring 41 is reset, the inner rod slides out from the inner part of the outer rod, thereby realizing the telescopic function. The arrangement of the telescopic rod 40 makes the first spring 41 only move in the up and down direction. In this technical solution, the third slide groove 39 is set as a circular groove, and several groups of first springs 41 are arranged along the circumference of the third slide groove 39. Several groups of first springs 41 can increase the stability and accuracy of the upward reset movement of the ring plate 38, thereby not affecting the up and down reciprocating movement of the second cylinder 8.

[0041] In the embodiment four, the polishing sheet 10 is expanded outwardly by the arc-shaped plate 9, so that only the part of the polishing sheet 10 in contact with the arc-shaped plate 9 is arc-shaped and can contact the inner wall of the flange connecting hole 301, while the part of the polishing sheet 10 between the adjacent arc-shaped plates 9 is straight and cannot contact the inner wall of the flange connecting hole 301, which reduces the use effect of the polishing sheet 10 and the polishing effect. To solve the problem, the embodiment is improved on the basis of the embodiment three, and details can be referred to Figures 1-15 The third core rod 42 is rotatably arranged in the inner part of the lifting seat 6, penetrates the lifting ring 54 and the first cylinder 7 and is inserted into the second cylinder 8, the third sliding rod 43 is fixed on the surface of the positioning frame 20, the fourth sliding groove 44 is arranged on the outer surface of the third core rod 42 and used for sliding of the third sliding rod 43, the third sliding protrusion 45 is fixed on the end of the third sliding rod 43, the third inclined groove 46 is arranged on the inner wall of the fourth sliding groove 44 and used for sliding of the third sliding protrusion 45, and the sliding block 52 is fixed on the end of the polishing sheet 10 and slidably arranged in the inner part of the arc-shaped plate 9.

[0042] In the technical scheme, when the second cylinder 8 moves up and down, the second cylinder 8 moves up and down relative to the third core rod 42, as shown in Figure 12 and Figure 13 When the second cylinder 8 moves downward relative to the third core rod 42, the second cylinder 8 drives the third sliding rod 43 to move downward along the fourth sliding groove 44, the third sliding groove 39 drives the third sliding protrusion 45 to move downward along the third inclined groove 46, the third sliding protrusion 45 drives the third sliding rod 43 to move rightward, and the third sliding rod 43 drives the positioning frame 20 to move rightward, as shown in Figure 11As shown, the positioning frame 20 moves right, driving the winding roller 21 to move right in the rotating groove 19. Since the winding roller 21 has completely unwound the polishing sheet 10 at this time, the winding roller 21 moves right, pulling the polishing sheet 10 connected with the winding roller 21 to move right, so that the polishing sheet 10 moves clockwise along the arc-shaped plate 9. The end of the arc-shaped plate 9 drives the sliding block 52 to slide along the arc-shaped plate 9, compressing the third spring 53 and making the third spring 53 store energy. When the polishing sheet 10 moves clockwise along the arc-shaped plate 9, the straight strip part 101 on the polishing sheet 10 moves to the arc surface part 102. When the second cylinder 8 moves upward relative to the third core rod 42, the third sliding rod 43 moves left to reset, driving the positioning frame 20 and the winding roller 21 to move left to reset. The third spring 53 releases energy, driving the polishing sheet 10 to move counterclockwise, so that the straight strip part 101 and the arc surface part 102 of the polishing sheet 10 can alternately change positions, thereby increasing the use effect of the polishing sheet 10 and further improving the polishing effect. At the same time, the polishing sheet 10 reciprocates clockwise and counterclockwise along the arc-shaped plate 9, so that the polishing sheet 10 has a horizontal pulling displacement relative to the inner wall of the flange connecting hole 301, thereby improving the polishing effect. In the technical solution, when the polishing sheet 10 polishes the inner wall of the flange connecting hole 301, the polishing sheet 10 rotates clockwise, and the inner wall of the flange connecting hole 301 provides a counterclockwise force to the polishing sheet 10, as shown in Figure 10 and Figure 11 As shown, the polishing sheet 10 cannot rotate counterclockwise in the Figure 10 Figure 11 Figure 10 state, thereby increasing the stability of the polishing sheet 10 during polishing. When the polishing sheet 10 is pulled and rotates clockwise relative to the arc-shaped plate 9, the third spring 53 and the inner wall of the flange connecting hole 301 provide a counterclockwise force to the polishing sheet 10 when the polishing sheet 10 resets, so that the polishing sheet 10 can stably reset. The sliding block 52 will not slide out of the arc-shaped plate 9, but will only slide along the arc-shaped plate 9, thereby avoiding the polishing sheet 10 from falling off.

[0043] It should be noted that, in the present document, the terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device.

[0044] The above merely describes the preferred embodiments of the present application, and it should be pointed out that, for those skilled in the art, several improvements and refinements can be made without departing from the technical principles of the present application, and these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A device for testing the strength of a rotary reducer housing, comprising a hydraulic universal testing machine (2) fixed on a fixed base (1), wherein a feed plate (4) for placing a housing (3) is slidably provided on the fixed base (1), and characterized in that: A side platform (5) is provided on one side of the fixed base (1), and a lifting seat (6) that moves synchronously with the feeding plate (4) is slidably provided on the side platform (5), and a first cylinder (7) is rotatably provided inside the lifting seat (6), and a second cylinder (8) is connected to the bottom of the first cylinder (7), and an arc plate (9) is slidably provided on the outer side of the second cylinder (8), and a grinding sheet (10) for grinding the flange connection hole (301) of the shell (3) is provided on the outer surface of the arc plate (9), and a first core rod (11) is slidably provided inside the lifting seat (6), and a transmission component (12) for driving the arc plate (9) to expand outward is provided between the first core rod (11) and the second cylinder (8), and the arc plate (9) makes the grinding sheet (10) fit with the inner wall of the flange connection hole (301) by expanding outward.

2. The device for testing the strength of a rotary reducer housing according to claim 1, characterized in that: The upper surface of the side platform (5) is provided with a slideway (13), a movable column (14) is elastically provided in the slideway (13), a lifting column (15) is slidably provided inside the movable column (14), a connecting plate (16) is fixed between the top of the lifting column (15) and the lifting seat (6), a first limiting ball (17) is fixed at the bottom end of the lifting column (15), and a first track groove (18) for the sliding of the first limiting ball (17) is opened inside the side platform (5).

3. The device for testing the strength of a rotary reducer housing according to claim 1, characterized in that: A rotation groove (19) is provided on the side wall of the second cylinder (8), a positioning frame (20) is provided in the rotation groove (19), and a winding roller (21) for retracting and releasing the grinding sheet (10) is elastically provided on the positioning frame (20).

4. The device for testing the strength of a rotary reducer housing according to claim 3, characterized in that: A lifting ring (54) is slidingly provided inside the lifting seat (6), the top end of the first core rod (11) is rotatably connected to the lifting ring (54), a lifting rod (22) is fixed to the outer surface of the lifting ring (54), a second core rod (23) is fixed to the end of the lifting rod (22), a second limiting ball (24) is fixed to the bottom end of the second core rod (23), and a second track groove (25) for the second limiting ball (24) to slide is opened inside the side platform (5).

5. The device for testing the strength of a rotary reducer housing according to claim 2, characterized in that: A side plate (26) is fixed to the outer surface of the movable column (14), an electric push rod (27) is fixed to the side plate (26), a baffle (28) for contacting the feed plate (4) is fixed to the output end of the electric push rod (27), a fixed plate (29) is fixed to the surface of the fixed base (1), a first servo motor (30) is fixed to the outer surface of the fixed plate (29), a reciprocating screw (31) is fixed to the output end of the first servo motor (30), the reciprocating screw (31) is threadedly connected to the feed plate (4), and a guide rail (32) for the feed plate (4) to slide is fixed to the fixed base (1).

6. The device for testing the strength of a rotary reducer housing according to claim 1, characterized in that: A gear ring (33) is rotatably provided inside the lifting seat (6), a first gear (34) meshing with the gear ring (33) is fixed on the outer surface of the first cylinder (7), a second servo motor (35) is fixed inside the lifting seat (6), and a second gear (36) meshing with the gear ring (33) is fixed at the output end of the second servo motor (35).

7. The device for testing the strength of a rotary reducer housing according to claim 1, characterized in that: The transmission assembly (12) includes a spiral groove (1211) provided on the outer surface of the first core rod (11), a boss (1212) is fixed on the inner wall of the second cylinder (8), and the boss (1212) is slidably arranged in the spiral groove (1211), a first sliding rod (1213) is fixed on the inner surface of the arc plate (9), a first sliding groove (1214) for the first sliding rod (1213) to slide is provided on the inner wall of the second cylinder (8), a first sliding protrusion (1215) is fixed at the end of the first sliding rod (1213), and a first inclined groove (1216) for the first sliding protrusion (1215) to slide is provided on the inner wall of the first sliding groove (1214).

8. The device for testing the strength of a rotary reducer housing according to claim 1, characterized in that: The transmission assembly (12) includes a second slide groove (1221) opened on the surface of the first core rod (11), a second slide rod (1222) is fixed on the inner surface of the arc plate (9), the second slide rod (1222) is slidably connected to the second slide groove (1221), a second sliding protrusion (1223) is fixed at the end of the second slide rod (1222), and the inner wall of the second slide groove (1221) is provided with a second inclined groove (1224) for the second sliding protrusion (1223) to slide.

9. The device for testing the strength of a rotary reducer housing according to claim 4, characterized in that: A plug rod (37) is fixed to the top of the second cylinder (8), and the plug rod (37) is slidably connected to the first cylinder (7). A ring piece (38) is fixed to the bottom end of the plug rod (37). A third sliding groove (39) for the ring piece (38) to slide is provided inside the first cylinder (7). A telescopic rod (40) is provided inside the third sliding groove (39). The lower surface of the ring piece (38) is slidably connected to the telescopic rod (40), and a first spring (41) is sleeved on the circumference of the telescopic rod (40).

10. The device for testing the strength of a rotary reducer housing according to claim 9, characterized in that: The lifting seat (6) is internally rotatably provided with a third core rod (42), the third core rod (42) passes through the lifting ring (54) and the first cylinder (7) and is inserted into the second cylinder (8), a third slide rod (43) is fixed on the surface of the positioning frame (20), the outer surface of the third core rod (42) is provided with a fourth slide groove (44) for the third slide rod (43) to slide, a third sliding protrusion (45) is fixed to the end of the third slide rod (43), and a third inclined groove (46) for the third sliding protrusion (45) to slide is provided on the inner wall of the fourth slide groove (44), a slider (52) is fixed to the end of the grinding sheet (10), the slider (52) is slidably provided inside the arc plate (9), and a third spring (53) is fixed between the slider (52) and the inner wall of the arc plate (9).

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