CN217967746U

CN217967746U - Main shaft locking mechanism of stone cutting machine

Info

Publication number: CN217967746U
Application number: CN202222094515.5U
Authority: CN
Inventors: 潘文峰; 傅金发
Original assignee: Quanzhou Dafeng Machinery Co ltd
Current assignee: Quanzhou Dafeng Machinery Co ltd
Priority date: 2022-08-10
Filing date: 2022-08-10
Publication date: 2022-12-06
Anticipated expiration: 2032-08-10

Abstract

A main shaft locking mechanism of a stone cutting machine comprises a supporting seat, a main shaft, a first bearing group, a first end cover and a locking assembly; the first bearing group is arranged on the main shaft in a penetrating way and is assembled in the long through hole; the first end cover locks the outer end of the long through hole and tightly props against the outer side of the first bearing group, and the locking component tightly props against the inner side of the first bearing group; the locking assembly is provided with a pressing nut, a first nut, a second nut and a first stop piece, the pressing nut is sleeved on the main shaft and tightly abuts against the inner side of the inner ring of the first bearing set, the first nut is locked on the outer thread section of the main shaft and tightly abuts against the pressing nut, the first stop piece abuts against the side surface of the first nut, and the first clamping block is folded and clamped in the first clamping groove; the second nut is fixedly locked on the external thread section and tightly props against the first stop piece, and the second clamping block is folded and clamped in the second clamping groove; the utility model discloses a lock solid subassembly with the firm pin joint of main shaft, first bearing group on the supporting seat, the saw bit stable cutting, the roughness of stone material cutting plane is good, cut of high qualityly and cut efficiently.

Description

Main shaft locking mechanism of stone cutting machine

Technical Field

The utility model belongs to the technical field of a main shaft lock solid technique and specifically relates to indicate a stone cutting machine main shaft locking mechanism.

Background

The stone cutting machine is a machine for processing mine stones in a sheet shape, the traditional stone slicing processing adopts a common stone sawing machine for processing, only one stone can be processed and cut each time, and the working efficiency is low; the multi-blade stone sawing machine is a cantilever type structure, one end of a main shaft is rotatably pivoted on a machine table, the other end of the main shaft is a suspended end, and a saw blade is loaded on the main shaft from the suspended end; although the main shaft can suspend a plurality of saw blades, the cutting efficiency can be improved; however, the main shaft is supported on the frame through the bearing, and after the main shaft rotates for a long time to drive the saw blade to cut the stone material, the connecting structure of the main shaft and the bearing, and the connecting structure of the bearing and the machine table are loosened, so that the main shaft is installed insecurely, the stable cutting performance of the saw blade is poor, the saw blade is influenced to cut the stone material, and the main shaft is easy to damage, thereby further causing the whole stone cutting device to fail to cut the stone material.

In view of this, the present inventors have made extensive studies and studies to develop and design the present invention in view of the disadvantages and inconveniences caused by the incomplete design of the spindle locking structure.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a stone cutter main shaft locking mechanism through the firm pin joint of lock solid subassembly with main shaft, first bearing group on the supporting seat, the stable cutting of saw bit, the roughness of stone material cutting plane is good, cuts of high quality and cutting efficient.

In order to achieve the above purpose, the solution of the present invention is:

a main shaft locking mechanism of a stone cutting machine comprises a supporting seat, a main shaft arranged on the supporting seat, a first bearing group, a first end cover and a locking assembly; the supporting seat is provided with a first suspension arm, the first suspension arm is provided with a long through hole for the main shaft to penetrate through, and the first bearing group penetrates through the main shaft and is assembled in the long through hole; the first end cover is sleeved on the main shaft and locks the outer end of the long through hole and tightly props against the outer side of the first bearing group, and the locking component is locked on the main shaft and tightly props against the inner side of the first bearing group; the locking assembly is provided with a pressing nut, a first nut, a second nut and a first stop piece, an external thread section is arranged at the position, located in the long through hole, of the main shaft, and a first clamping groove is formed in the external thread section of the main shaft; a second clamping groove is formed in the second nut, a first clamping block extends from the inner ring of the first stop piece, and at least one second clamping block extends from the outer ring of the first stop piece; the tight-resisting nut is sleeved on the main shaft and tightly props against the inner side of the inner ring of the first bearing group, the first nut is locked on the outer thread section of the main shaft and tightly props against the tight-resisting nut, the first stop piece is sleeved on the main shaft and props against the side surface of the first nut, and the first clamping block is folded and clamped in the first clamping groove; the second nut is fixedly locked on the external thread section of the main shaft and tightly props against the first stop piece, and the second clamping block is folded and clamped in the second clamping groove.

The first fixture block and the second fixture block of the first stop sheet are flexible parts.

The first nut is provided with a first nut clamping groove, and the second clamping block is folded and clamped in the first nut clamping groove.

The distance from the inner side of the first bearing group to the external thread section of the main shaft is smaller than the thickness of the abutting nut.

The first fixture block is perpendicular to the first stop piece, a plurality of foldable second fixture blocks are distributed on the outer ring of the first stop piece, and the included angle between each second fixture block and the corresponding first stop piece is larger than or equal to 90 degrees.

The first clamping block and one of the second clamping blocks are located on the same radius of the first stop piece, and the first clamping groove and the second clamping groove are arranged in parallel.

The locking mechanism of the main shaft of the stone cutting machine further comprises a second end cover and a second bearing group; the long through hole is divided into a first bearing mounting hole, a second bearing mounting hole and an oil tank chamber located between the first bearing mounting hole and the second bearing mounting hole, the first bearing group is assembled in the first bearing mounting hole, the second bearing group is assembled in the second bearing mounting hole, and the second end cover is sleeved on the main shaft and used for locking the outer end of the second bearing mounting hole and tightly pushing the outer side of the second bearing group.

The aperture sizes of the first bearing mounting hole and the second bearing mounting hole are larger than the aperture size of the oil tank chamber, a first step ring is formed at the joint of the first bearing mounting hole and the oil tank chamber, and a second step ring is formed at the joint of the second bearing mounting hole and the oil tank chamber; the inner side of the bearing outer ring of the first bearing group is abutted against the first step ring, and the inner side of the bearing outer ring of the second bearing group is abutted against the second step ring.

The inner ring of the second bearing set abuts against the second nut side face.

The first bearing group is provided with tapered roller bearings positioned at two sides and a cylindrical roller bearing positioned in the middle; the second bearing set has two cylindrical roller bearings.

After the structure is adopted, when the main shaft is locked, the first bearing group is arranged on the main shaft in a penetrating way and assembled in the long through hole, the first end cover is sleeved on the main shaft, locks the outer end of the long through hole and tightly pushes the outer side of the outer ring of the first bearing group; the tight-resisting nut is sleeved on the main shaft and tightly props against the inner side of the inner ring of the first bearing group, the first nut is locked on the outer thread section of the main shaft and tightly props against the tight-resisting nut, the first stop piece is sleeved on the main shaft and props against the side surface of the first nut, and the first clamping block is folded and clamped in the first clamping groove; the second nut is fixedly locked on the external thread section of the main shaft and tightly props against the first stop piece, and the second clamping block is folded and clamped in the second clamping groove; the first clamping block and the second clamping block limit the position relation among the main shaft, the second nut and the first stop piece, the second nut is prevented from rotating and loosening on the main shaft, the tight nut is enabled to always support the first bearing group, the assembly structure of the first bearing group is firmer, the main shaft is stable in structure, the saw blade is stable in cutting, the cutting quality is good, and the cutting efficiency is high.

Drawings

FIG. 1 is an exploded view of the locking mechanism of the main shaft of the stone cutting machine of the present invention;

FIG. 2 is a schematic cross-sectional view of the locking mechanism of the main shaft of the stone cutting machine according to the present invention;

fig. 3 is a schematic structural view of the spindle of the present invention;

fig. 4 is a schematic structural view of the first locking piece of the present invention;

FIG. 5 is a schematic structural view of the stone cutting device of the present invention;

FIG. 6 is an exploded view of the main shaft and the supporting frame of the stone cutting device of the present invention;

FIG. 7 is an exploded view of the stone cutting device of the present invention;

fig. 8 is a schematic cross-sectional view of the spindle end of the stone cutting device of the present invention without locking the second boom;

fig. 9 is a schematic cross-sectional view of the main shaft end of the stone cutting device of the present invention locked to the second boom;

FIG. 10 is a schematic cross-sectional view of the locking mechanism of the stone cutting device according to the present invention;

fig. 11 is an exploded view of the locking mechanism of the stone cutting device according to the present invention.

Description of the symbols

A saw blade 100; a pulley 10; a main shaft 1; a support frame 2; a first boom 21; a second boom 22; a locking mechanism 4; a locking mechanism 5; a first end cap 41; a second end cap 42; a first bearing set 43; a second bearing set 44; a locking assembly 45; a first bearing mounting hole 211; second bearing mounting holes 212; an oil tank chamber 213; the nut 451 is tightened; a first nut 452; the second nut 453; a first stop tab 454; an external thread section 11; a first engaging groove 111; a second latching groove 4531; a first block 4541; a second block 4542; first nut retaining groove 4521; a first step ring 214; a second step ring 215; an outer shell 51; a middle case 52; a push plate 53; a screw 54; an inner shaft 55; a joint 56; a jack 561; a first inner shaft bearing set 552; a second inner shaft bearing set 553; a first inner shaft bearing mounting hole 521; a second inner shaft bearing mounting hole 522; a tank chamber 523; a first inner shaft step ring 524; a second inner shaft step ring 525; a cover 526; an inner shaft bearing locking structure 57; a third nut 571; a fourth nut 572; the second stopper 573; a fourth locking groove 5721; a third block 5731; fourth spline 5732; a third nut retaining groove 5711; a bearing sleeve mount 531; a screw bearing 532; a screw gland nut 533; a screw bracket 511; a leg part 512; a connection part 513; a through hole 5131; a nut 5132; a boss 554; a cover plate 555; an outer locking semicircular piece 562; the inner locking half round 563.

Detailed Description

In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following embodiments.

Referring to fig. 1 to 11, the present invention discloses a locking mechanism for a main shaft of a stone cutting machine, wherein the locking mechanism 4 comprises a supporting seat 2, a main shaft 1 disposed on the supporting seat 2, a first bearing set 43, a first end cap 41 and a locking assembly 45; the support seat 2 is provided with a first suspension arm 21, the first suspension arm 21 is provided with a long through hole for the main shaft 1 to penetrate through, and the first bearing group 43 penetrates through the main shaft 1 and is assembled in the long through hole; the first end cover 41 is sleeved on the main shaft 1 and locks the outer end of the long through hole and tightly supports against the outer side of the first bearing set 43, and the locking component 45 is locked on the main shaft 1 and tightly supports against the inner side of the first bearing set 43; the locking assembly 45 has a pressing nut 451, a first nut 452, a second nut 453 and a first stop piece 454, the spindle 1 is provided with an external thread section 11 at a position inside the long through hole, and the spindle 1 is provided with a first locking groove 111 at the external thread section 11; a second locking groove 4531 is formed in the second nut 453, a first block 4541 extends from the inner ring of the first stop piece 454, and at least one second block 4542 extends from the outer ring of the first stop piece 454; the abutting nut 451 is sleeved on the main shaft 1 and abuts against the inner side of the inner ring of the first bearing group 43, the first nut 452 is locked on the external thread section 11 of the main shaft 1 and abuts against the abutting nut 451, the first stop piece 454 is sleeved on the main shaft 1 and abuts against the side surface of the first nut 452, and the first clamping block 4541 is folded and clamped in the first clamping groove 111; the second nut 453 is locked on the external thread section 11 of the main shaft 1 and tightly pushes against the first stop piece 454, and the second clamping block 4542 is folded and clamped in the second clamping groove 4531.

When the main shaft 1 of the stone cutting machine locking mechanism is locked, the first bearing group 43 is arranged on the main shaft 1 in a penetrating way and assembled in the long penetrating hole of the first suspension arm 21, the first end cover 41 is sleeved on the main shaft 1 and locks the outer end of the long penetrating hole and tightly pushes the outer ring of the first bearing group 43; the abutting nut 451 is sleeved on the main shaft 1 and abuts against the inner side of the inner ring of the first bearing set 43, the first nut 452 is locked on the external thread section 11 of the main shaft 1 and abuts against the abutting nut 451, the first stop piece 454 is sleeved on the main shaft 1 and abuts against the side surface of the first nut 452, and the first clamping block 4541 is folded and clamped in the first clamping groove 111; the second nut 453 is locked on the external thread section 11 of the spindle 1 and tightly abuts against the first stop piece 454, and the second clamping block 4542 is folded and clamped in the second clamping groove 4531; the first fixture block 4541 and the second fixture block 4542 define the positional relationship among the spindle 1, the second nut 453 and the first stopper 454, and prevent the second nut 453 from rotating and loosening on the spindle 1, so that the tightening nut 451 always tightens against the first bearing set 43, the assembly structure of the first bearing set 43 is firmer, the spindle 1 has a stable structure, the saw blade 100 is stable in cutting, the cutting quality is good, and the cutting efficiency is high.

The first and

second retainers

4541 and 4542 of the first stopper 454 of the present invention are flexible members; the first fixture block 4541 and the second fixture block 4542 are convenient to fold, and the assembly is more convenient.

The first nut 452 of the present invention is provided with a first nut locking groove 4521, and the second fixture block 4542 is folded and clamped in the first nut locking groove 4521; the first nut 452, the second nut 453 and the first stopping piece 454 can be firmly locked on the main shaft 1, so that the first bearing group 43 is effectively prevented from loosening, the first bearing group 43 is firmly fixed on the main shaft 1, the main shaft 1 rotates more stably, the saw blade 100 cuts more stably, and the cutting quality of the stone cutting device is better.

The second nut 453 of the present invention is provided with a plurality of second locking grooves 4531, and at least two second locking blocks 4542 are folded and locked in any two second locking grooves 4531; the spindle locking structure is firmer.

The utility model discloses a main shaft 1 is less than by the inboard distance to external screw thread section 11 of first bearing group 43 support tight nut 451 thickness, support tight nut 451 part promptly and be located the external screw thread section, first nut 452 locking supports tight nut 451 on external screw thread section 11 tightly, and it is better to support tight effect, can be in the same place the firm pin joint of main shaft 1, first bearing group 43 and first davit 21, and the package assembly of main shaft 1 is more firm.

The first fixture block 4541 of the present invention is perpendicular to the first stopper 454, a plurality of foldable second fixture blocks 4542 are distributed on the outer ring of the first stopper 454, and the included angle between the second fixture blocks 4542 and the first stopper 454 is greater than or equal to 90 degrees; when the first stopper 454 is sleeved on the spindle 1, the first latching block 4541 and the second latching block 4542 do not touch the spindle 1, so as to avoid affecting the assembly of the first stopper 454.

The first latching block 4541 and one of the second latching blocks 4542 of the present invention are located on the same radius of the first latching piece 454, and the first latching groove 111 and the second latching groove 4531 are arranged in parallel; the first block 4541, the second block 4542, the first locking groove 111 and the second locking groove 4531 are located on the same axis, and the relative positions of the spindle 1, the second nut 453 and the first stopper 454 are defined in the same direction, so that the locking structure of the three parts is firmer and the cutting is more stable.

The locking mechanism of the main shaft of the stone cutting machine further comprises a second end cover 42 and a second bearing group 44; the long through hole is divided into a first bearing mounting hole 211, a second bearing mounting hole 212 and an oil tank chamber 213 located between the first bearing mounting hole 211 and the second bearing mounting hole 212, the first bearing set 43 is assembled in the first bearing mounting hole 211, the first end cover 41 is sleeved on the main shaft 1 and locks the outer end of the first bearing mounting hole 211 and tightly supports the outer side of the first bearing set 43, and the locking component 45 is locked on the main shaft 1 and tightly supports the inner side of the first bearing set 43; the second bearing set 44 is assembled in the second bearing mounting hole 212, and the second end cover 42 is sleeved on the main shaft 1 and locks the outer end of the second bearing mounting hole 212 and abuts against the outer side of the second bearing set 44; the main shaft 1 is rotatably pivoted on the first suspension arm 21 through the first bearing group 43 and the second bearing group 44, and the main shaft 1, the bearing and the first suspension arm 21 are firmly pivoted together by utilizing the first end cover 41, the second end cover 42 and the locking component 45, so that unstable cutting caused by the loosening phenomenon after the main shaft 1 is subjected to long-time cutting is avoided, the utility model discloses the main shaft 1 has stable structure, the saw blade 100 is stable in cutting, the cutting quality is good, and the cutting efficiency is high; the oil tank chamber 213 contains lubricating oil to allow the bearings to rotate more smoothly.

The aperture of the first bearing mounting hole 211 and the second bearing mounting hole 212 of the present invention is larger than the aperture of the oil tank chamber 213, the joint of the first bearing mounting hole 211 and the oil tank chamber 213 forms a first step ring 214, and the joint of the second bearing mounting hole 212 and the oil tank chamber 213 forms a second step ring 215; the inner side of the bearing outer ring of the first bearing set 43 abuts against the first step ring 214, and the inner side of the bearing outer ring of the second bearing set 44 abuts against the second step ring 215; the first bearing set 43 and the second bearing set 44 are conveniently assembled and fixed on the first suspension arm 21.

The inner ring of second bearing group 44 supports and leans on in second nut 453 side, can make first bearing group 43 and second bearing group 44 all receive lock solid subassembly 45 and support tightly, and package assembly is more firm, and main shaft 1 rotates more stably, and the cutting of saw bit 100 is more steady, and the cutting quality of cutting the stone device is better.

The first bearing set 43 of the present invention has tapered roller bearings located at both sides and a cylindrical roller bearing located at the middle; the second bearing set 44 has two cylindrical roller bearings; the main shaft 1 is pivoted on the first suspension arm 21 to rotate more smoothly.

The utility model discloses stone cutting machine main shaft locking mechanism can be applied to the stone cutting device, the stone cutting device is including main shaft 1, the support frame 2 that is used for horizontal level hanging main shaft 1 of at least equipment a saw bit 100 and drive main shaft 1 pivoted driving motor, 2 both ends of support frame are provided with downwardly extending's first davit 21 and second davit 22, the one end of main shaft 1 rotates through locking mechanism 4 and pin-joints on first davit 21, the other end of main shaft 1 rotates through the activity of locking mechanism 5 and pin-joints on second davit 22; the driving motor 3 drives the main shaft 1 to rotate so as to drive the saw blade 100 to rotate to cut the stone.

When the stone cutting device of the utility model is used for cutting stone materials, one end of the main shaft 1 is firmly pivoted on the first suspension arm 21 of the support frame 2 through the locking mechanism 4, and the other end of the main shaft 1 is movably locked on the second suspension arm 22 of the support frame 2 through the locking mechanism 5; therefore, the two ends of the main shaft 1 are locked on the supporting frame in a balanced manner, the rotating structure of the main shaft 1 is more stable, the saw blade 100 can cut stone stably, the flatness of a stone cutting surface is good, the cutting quality is good, the cutting efficiency is high, and the problem that the main shaft 1 is unstable and easy to deform to cause unstable cutting is effectively solved; when the stone is not cut, the other end of the main shaft 1 is separated from the second suspension arm 21 through the locking mechanism 5, so that the saw blade 100 is convenient to assemble and replace.

The locking mechanism 5 of the present invention comprises an outer shell 51, a middle shell 52, a push plate 53, a screw 54, an inner shaft 55 and a joint 56; the middle shell 52 is slidably sleeved in the outer shell 51, and the outer shell 51 is an assembly sleeve arranged on the second boom 21; the push plate 53 is fixed at the outer end of the middle shell 52, and one end of the screw 54 is rotatably pivoted on the outer side surface of the push plate 53 through a screw bearing 532; the inner shaft 55 is assembled in the middle shell 52 through an inner shaft bearing, the joint 56 abuts against the end of the outer shell 51, one end of the joint 56 extends into the outer shell 51 to be connected with the inner shaft 55, and the joint 56 is provided with a jack 561 for inserting the spindle 1; the screw 54 rotates to push the push plate 53 to move in the axial direction of the main shaft, so as to push the middle shell 52 to move in the outer shell 51 in the axial direction of the main shaft, and thus drive the inner shaft 55 to move in the axial direction of the main shaft; when the inner shaft 55 drives the joint 56 to move in the spindle direction, the end of the spindle 1 is inserted into the jack 561, and the spindle 1 rotates to drive the inner shaft 55 to rotate in the middle shell 52; when interior axle 55 drives connect 56 during motion to the main shaft direction dorsad, jack 561 is deviate from to the tip of main shaft 1, can assemble, change saw bit 100, the utility model discloses cut stone device's main shaft 1 and second davit 22 activity pin joint structure, not only the main shaft supports firmly, and the saw bit cutting is steady, still conveniently assembles, changes saw bit 100.

The utility model discloses when carrying out the stone material cutting, assemble saw bit 100 on main shaft 1 earlier, rotate screw rod 54 again, screw rod 54 promotes push pedal 53 and removes to 1 direction of main shaft, casing 52 removes to 1 direction of main shaft in push pedal 53 drives to interior axle 55 promotion joint 56 in the casing 52 removes to the main shaft in the drive, the tip of main shaft 1 is inserted and is arranged in the jack 561 that connects 56, can lock the tip of main shaft 1 on second davit 22, and the both ends of main shaft 1 are all balanced the locking on the support frame, and main shaft 1 rotating-structure is more stable for saw bit 100 can steadily cut the stone material.

The inner shaft bearing group of the present invention has a first inner shaft bearing group 552 and a second inner shaft bearing group 553, the middle housing 52 is provided with a through hole for the inner shaft 55 to penetrate through, the through hole is divided into a first inner shaft bearing mounting hole 521, a second inner shaft bearing mounting hole 522, and an oil tank chamber 523 located between the first inner shaft bearing mounting hole 521 and the second inner shaft bearing mounting hole 522, a first inner shaft step ring 524 is formed at the joint of the first inner shaft bearing mounting hole 521 and the oil tank chamber 523, and a second inner shaft step ring 525 is formed at the joint of the second inner shaft bearing mounting hole 522 and the oil tank chamber 523; the first inner shaft bearing set 552 is assembled in the first inner shaft bearing mounting hole 521, and the inner end of the first inner shaft bearing set 552 abuts against the first inner shaft step ring 524, the second inner shaft bearing set 553 is assembled in the second inner shaft bearing mounting hole 522, and the inner end of the second inner shaft bearing set 553 abuts against the second inner shaft step ring 525; a sealing cover 526 abuts against the outer end of the second inner shaft bearing group 553 and is locked at the end of the middle shell 52, the inner shaft 55 is provided with an inner shaft bearing locking structure 57 at the outer end of the first inner shaft bearing group 552, the inner shaft bearing locking structure 57 is provided with a third nut 571, a fourth nut 572 and a second stop tab 573, one end of the inner shaft 55 close to the push plate 53 is provided with an external thread, the external thread of the inner shaft 55 is provided with a third stop groove, and the fourth nut 572 is provided with a fourth stop groove 5721; a third detent 5731 extends from an inner ring of second detent 573, and at least a fourth detent 5732 extends from an outer ring of second detent 573; the third nut 571 is locked on the external thread of the inner shaft 55 and abuts against the inner ring of the first inner shaft bearing set 552, the second stop piece 573 is sleeved on the inner shaft 55 and abuts against the third nut side 571, and the fourth nut 572 is locked on the external thread of the inner shaft 55 and abuts against the second stop piece 573; the third clamping block 5731 is folded and clamped in the third clamping stopping groove, and the fourth clamping block 5732 is folded and clamped in the fourth clamping stopping groove 5721; the third clamping block 5731 and the fourth clamping block 5732 define the position relationship among the inner shaft 55, the fourth nut 572 and the second stopping piece 573, and prevent the fourth nut 572 from rotating and loosening on the inner shaft 55, so that the third nut 571 is tightly abutted against the first inner shaft bearing group 552 all the time, the assembly structure of the first inner shaft bearing group 552 is firmer, the inner shaft 55 is structurally stable, the cutting of the saw blade 100 is smooth, the cutting quality is good, and the cutting efficiency is high.

The third nut 571 of the present invention is provided with a third nut locking groove 5711, and the second fastening block 5732 is folded and fastened in the third nut locking groove 5711; the third nut 571, the fourth nut 572 and the second stopping piece 573 can be firmly locked on the main shaft 1, so that the first inner shaft bearing set 552 is effectively prevented from loosening, the first inner shaft bearing set 552 is firmly fixed on the inner shaft 55, the inner shaft 55 rotates more stably, the main shaft 1 further rotates more stably, the saw blade 100 cuts more stably, and the cutting quality of the stone cutting device is better.

The third detent 5731 of the present invention is perpendicular to the second detent 573, a plurality of foldable fourth detents 5732 are distributed on the outer ring of the second detent 573, and the included angle between the fourth detents 5732 and the second detent 573 is greater than or equal to 90 degrees; when the second stop tab 573 is fitted over the inner shaft 55, the third detent 5731 and the fourth detent 5732 do not hit against the inner shaft 55, and the assembly of the second stop tab 573 is not affected.

The third detent 5731 and one of the fourth detent 5732 of the present invention are located on the same radius of the second detent 573, and the third latching groove and the fourth latching groove 5721 are disposed in parallel; the third locking block 5731, the fourth locking block 5732, the third locking groove and the fourth locking groove 5721 are located on the same axis, and the relative positions of the inner shaft 55, the third nut 571 and the second stopping piece 573 are defined in the same direction, so that the locking structure of the three parts is firmer and the cutting is smoother.

The first inner shaft bearing group 552 is a tapered roller bearing, the second inner shaft bearing group 553 has a tapered roller bearing which is away from the oil tank chamber 523 and a cylindrical roller bearing which is close to the oil tank chamber 523.

The push plate 53 of the utility model is provided with a bearing sleeve seat 531, and two screw bearings 532 are arranged in the bearing sleeve seat 531; one end of the screw 54 is rotatably pivoted in the bearing sleeve seat 531 through two screw bearings 532, so that the screw 54 is conveniently rotated to push the push plate 53; and the end of the screw 54 is locked with a screw compression nut 533 abutting against the screw bearing 532; the screw compression nut 533 abuts against the side surface of the screw bearing 532, so that the screw 54 can be prevented from being separated from the screw bearing 532, and the assembly relationship is more stable.

The utility model discloses an outer one end of shell body 51 is provided with a screw rod support 511 that is the U type form, screw rod support 511 has two feet 512 and connects the connecting portion 513 of two feet 512, and two feet 512 connect the tip of fixing in shell body 51 respectively, connecting portion 513 is provided with a through hole 5131 corresponding to bearing sleeve seat 531, be fixed with a nut 5132 in the through hole 5131, screw rod 54 one end is worn to establish nut 5132 and is rotated and pivoted in bearing sleeve seat 531; the screw bracket 511 is used for supporting the screw 54, so that the screw 54 rotates horizontally to push the push plate 53 to move horizontally.

The outer tip of screw rod 54 is provided with rotates hand portion, makes things convenient for manual rotation screw rod 54 to push away push pedal 53 and drives well casing 52 and move in outer casing 51, and then makes the tip that connects 56 lock joint or throw off main shaft 1.

One end of the inner shaft 55 of the utility model is provided with a convex column 554 inserted into the jack 561 of the joint 56, the inner shaft 55 is provided with a cover plate 555 attached to the side surface of the end part of the joint 56, and the cover plate 555 is locked on the side surface of the end part of the joint 56 through a bolt; the joint 56 is provided with two outer-layer locking semicircular pieces 562 and two inner-layer locking semicircular pieces 563, the two inner-layer locking semicircular pieces 563 are butted and combined and locked through bolts, and the middle part of the two inner-layer locking semicircular pieces 563 surrounds a jack 561; the two outer-layer locking semicircular pieces 562 are sleeved on the peripheries of the two inner-layer locking semicircular pieces 563 and locked by bolts; the inner locking semicircular member 563 has a semicircular ring integrally formed therewith, the semicircular ring surrounds a semicircular groove on one side of the inner locking semicircular member 563 for assembling the other inner locking semicircular member 563, and the semicircular ring is close to the inner shaft 55.

The utility model discloses a joint 56 is fixed through the spline equipment with main shaft 1 tip.

The belt pulley 10 is assembled at the end part of the main shaft 1 extending out of the first suspension arm 21, and the driving motor 3 drives the belt pulley 10 to rotate so as to drive the main shaft 1 to rotate; the belt pulleys 10 with different radiuses can be replaced to change the rotating speed of the main shaft 1, so that the machine is suitable for cutting various stones.

The above embodiments and drawings do not limit the form and style of the present invention, and any suitable changes or modifications made by those skilled in the art should not be considered as departing from the scope of the present invention.

Claims

1. The utility model provides a stone cutter main shaft locking mechanism which characterized in that: the device comprises a supporting seat, a main shaft arranged on the supporting seat, a first bearing group, a first end cover and a locking assembly; the supporting seat is provided with a first suspension arm, the first suspension arm is provided with a long through hole for the main shaft to penetrate through, and the first bearing group penetrates through the main shaft and is assembled in the long through hole; the first end cover is sleeved on the main shaft, locks the outer end of the long through hole and tightly props against the outer side of the first bearing group, and the locking assembly is locked on the main shaft and tightly props against the inner side of the first bearing group; the locking assembly is provided with a pressing nut, a first nut, a second nut and a first stop piece, an external thread section is arranged at the position, located in the long through hole, of the main shaft, and a first clamping groove is formed in the external thread section of the main shaft; a second clamping groove is formed in the second nut, a first clamping block extends from the inner ring of the first stop piece, and at least one second clamping block extends from the outer ring of the first stop piece; the tight-resisting nut is sleeved on the main shaft and tightly props against the inner side of the inner ring of the first bearing group, the first nut is locked on the outer thread section of the main shaft and tightly props against the tight-resisting nut, the first stop piece is sleeved on the main shaft and props against the side surface of the first nut, and the first clamping block is folded and clamped in the first clamping groove; the second nut is fixedly locked on the external thread section of the main shaft and tightly props against the first stop piece, and the second clamping block is folded and clamped in the second clamping groove.

2. The locking mechanism of the main shaft of the stone cutting machine as claimed in claim 1, wherein: the first fixture block and the second fixture block of the first stop sheet are flexible parts.

3. The locking mechanism of the main shaft of the stone cutting machine as claimed in claim 1, wherein: the first nut is provided with a first nut clamping groove, and the second clamping block is folded and clamped in the first nut clamping groove.

4. The locking mechanism of the main shaft of the stone cutting machine as claimed in claim 1, wherein: the distance from the inner side of the first bearing group to the external thread section of the main shaft is smaller than the thickness of the tightening nut.

5. The locking mechanism of the main shaft of the stone cutting machine as claimed in claim 1, wherein: the first fixture block is perpendicular to the first stop piece, a plurality of foldable second fixture blocks are distributed on the outer ring of the first stop piece, and the included angle between each second fixture block and the corresponding first stop piece is larger than or equal to 90 degrees.

6. The locking mechanism of the main shaft of the stone cutting machine as claimed in claim 1, wherein: the first clamping block and one of the second clamping blocks are located on the same radius of the first stop piece, and the first clamping groove and the second clamping groove are arranged in parallel.

7. The locking mechanism of the main shaft of the stone cutting machine as claimed in claim 1, wherein: the bearing also comprises a second end cover and a second bearing group; the long through hole is divided into a first bearing mounting hole, a second bearing mounting hole and an oil tank chamber located between the first bearing mounting hole and the second bearing mounting hole, the first bearing group is assembled in the first bearing mounting hole, the first end cover is sleeved on the main shaft and locks the outer end of the long through hole and tightly supports the outer side of the first bearing group, and the locking assembly is locked on the main shaft and tightly supports the inner side of the first bearing group; the second bearing group is assembled in the second bearing mounting hole, and the second end cover is sleeved on the main shaft and used for locking the outer end of the second bearing mounting hole and tightly pushing the outer side of the second bearing group.

8. The locking mechanism of the main shaft of the stone cutting machine as claimed in claim 7, wherein: the aperture sizes of the first bearing mounting hole and the second bearing mounting hole are larger than the aperture size of the oil tank chamber, a first step ring is formed at the joint of the first bearing mounting hole and the oil tank chamber, and a second step ring is formed at the joint of the second bearing mounting hole and the oil tank chamber; the inner side of the bearing outer ring of the first bearing group is abutted against the first step ring, and the inner side of the bearing outer ring of the second bearing group is abutted against the second step ring.

9. The locking mechanism of the main shaft of the stone cutting machine as claimed in claim 7, wherein: the inner ring of the second bearing set abuts against the side face of the second nut.

10. The locking mechanism of the main shaft of the stone cutting machine as claimed in claim 7, wherein: the first bearing group is provided with tapered roller bearings positioned at two sides and a cylindrical roller bearing positioned in the middle; the second bearing set has two cylindrical roller bearings.