CN211136508U

CN211136508U - Water-cooled saw blade main shaft assembly

Info

Publication number: CN211136508U
Application number: CN201922274629.6U
Authority: CN
Inventors: 孙震; 冯贻辛
Original assignee: Jinan Chenkai Machinery Equipment Co ltd
Current assignee: Jinan Chenkai Machinery Equipment Co ltd
Priority date: 2019-12-18
Filing date: 2019-12-18
Publication date: 2020-07-31
Anticipated expiration: 2029-12-18

Abstract

The water-cooled saw blade main shaft assembly comprises a shell, a steel inner sleeve is installed in the shell in a matched mode, an annular sleeve is arranged in the steel inner sleeve, a main shaft is installed in the annular sleeve, a first positioning convex edge is arranged on the periphery of the main shaft located in the annular sleeve, bearings matched with the main shaft are installed in the positions on two sides of the steel inner sleeve, one side face of each bearing is in contact with the first positioning convex edge and the end face of the annular sleeve, and the other side face of each bearing is in contact with a gland. The utility model has the advantages of: the first locking nut can adjust the position of the saw blade as required so as to efficiently cut, the second locking nut can ensure that the main shaft is positioned and installed in the steel inner sleeve and the shell, and the annular water-proof platform and the notch in the water-cooling cavity can ensure that liquid for water cooling circularly flows in the water-cooling cavity, takes away more heat, further improves the heat dissipation efficiency and maintains the normal operation of the device.

Description

Water-cooled saw blade main shaft assembly

Technical Field

The utility model belongs to the technical field of the saw bit technique and specifically relates to a water-cooling saw bit main shaft assembly body.

Background

The saw bit is a cutter for cutting solid material, make its rotation cut the operation under power unit's drive usually, the saw bit can generate heat with the friction between the cutting object when cutting, in order to guarantee the life-span of saw bit, sharpness and operational safety, often need cool off the saw bit, current most saw bit cutting machine all only cools off the saw bit, the main shaft that drives the saw bit rotation can produce a large amount of heats equally under the high-speed rotatory fricative condition, if not in time dispel the heat to the main shaft, very easily take place deformation such as distortion deflection after long-time use, influence normal use, can cause the incident even, there is very big potential safety hazard.

Disclosure of Invention

In order to solve the problems, an object of the utility model is to provide a water-cooling saw bit main shaft assembly body in time discharges away main shaft and the produced heat of bearing friction through the water-cooling chamber between casing and the steel endotheca, avoids the main shaft to produce deformation under high temperature is rotatory to guarantee that the device normally carries out rotatory cutting operation.

The utility model provides a technical scheme that its technical problem adopted is: the utility model relates to a water-cooling saw blade main shaft assembly body, which comprises a shell, wherein a steel inner sleeve is arranged in the shell in a matching way, an annular sleeve is arranged in the steel inner sleeve, a main shaft is arranged in the annular sleeve, the periphery of the main shaft in the annular sleeve is provided with a first positioning convex edge, bearings matched with the main shaft are arranged in the positions at two sides of the steel inner sleeve, one side surface of each bearing is contacted with the first positioning convex edge and the end surface of the annular sleeve, the other side surface of each bearing is contacted with a gland, the gland is fixedly arranged on the shell, two ends of the main shaft penetrate out of the shell through the gland, a belt pulley matched with the main shaft is arranged at one end of the main shaft, the other end of the main shaft is provided with a second positioning convex edge, a back gasket and a front gasket which are matched with each other are sleeved at the front side of the second positioning convex edge, the first thread is provided with a first locking nut matched with the first thread, the periphery of the main shaft between the back washer and the gland is provided with a second thread, the second thread is provided with a second locking nut matched with the second thread, the rear side of the second locking nut is provided with a pressing sleeve, one end surface of the pressing sleeve is contacted with the second locking nut, the other end surface of the pressing sleeve penetrates through the gland to be contacted with the bearing, a first annular groove is formed in the shell, a second annular groove matched with the first annular groove is formed in the periphery of the steel inner sleeve, the first annular groove and the second annular groove form a water cooling cavity, and the shell is respectively provided with a water inlet and a water outlet communicated with the water cooling cavity. Furthermore, an annular water-proof platform is arranged in the water-cooling cavity and is positioned between the water inlet and the water outlet, and a notch is formed in the water-proof platform. Furthermore, pagoda joints are arranged on the water inlet and the water outlet. Further, the housing is an aluminum housing. Furthermore, the water inlet and the water outlet are respectively positioned at two ends of the water cooling cavity, a spiral guide plate is arranged in the water cooling cavity, a spiral guide groove is formed in the water cooling cavity by the spiral guide plate, and two ends of the spiral guide groove are respectively communicated with the water inlet and the water outlet.

The utility model has the advantages of: a water-cooling saw bit main shaft assembly body, through the water-cooling chamber between casing and the steel endotheca in time remove main shaft and the produced heat of bearing friction, avoid the main shaft to produce deformation under the high temperature is rotatory, guarantee that it normally drives the saw bit and carry out the rotary cutting operation, improve the life of main shaft, reduce cost of maintenance, stop simultaneously because of the main shaft takes place the potential safety hazard that deformation exists. The first locking nut can adjust the position of the saw blade as required so as to efficiently cut, the second locking nut can ensure that the main shaft is positioned and installed in the steel inner sleeve and the shell, and the annular water-proof platform and the notch in the water-cooling cavity can ensure that liquid for water cooling circularly flows in the water-cooling cavity, takes away more heat, further improves the heat dissipation efficiency and maintains the normal operation of the device.

Drawings

Fig. 1 is a schematic three-dimensional structure of the present invention;

fig. 2 is a front view of the present invention;

FIG. 3 is a sectional view taken along line A-A in FIG. 2;

FIG. 4 is an enlarged view of a cross-sectional view taken along line B-B in FIG. 3;

fig. 5 is a schematic structural view of the spiral guide plate installed in the water-cooling chamber of the present invention.

In the figure, 1, a main shaft 4 of a steel inner sleeve 3 of a shell 2 is provided with a first positioning convex edge 5, a bearing 6 is provided, a gland 7 is provided, a belt pulley 8 is provided with a second positioning convex edge 9, a back washer 10, a saw blade 12 is provided with a first thread 13, a first lock nut 14, a second thread 15, a second lock nut 16, a pressing sleeve 17, a first annular groove 18, a second annular groove 19, a water inlet 20 of a water cavity 20, a water outlet 21 of an annular water insulation platform 23, a notch 24 and a pagoda joint 25 are.

Detailed Description

A water-cooling saw bit main shaft assembly body, as shown in figure 1 and figure 2, including casing 1, as shown in figure 3, steel endotheca 2 is installed to casing 1 fit in, be equipped with annular cover 25 in the steel endotheca 2, install main shaft 3 in the annular cover 25. The periphery of the main shaft 3 in the annular sleeve 25 is provided with a first positioning convex edge 4, the end faces of the two sides of the first positioning convex edge 4 are flush with the end faces of the two sides of the annular sleeve 25, bearings 5 matched with the main shaft 3 are installed in the positions of the two sides of the steel inner sleeve 2, one side face of each bearing 5 is in contact with the end faces of the first positioning convex edge 4 and the annular sleeve 25, the other side face of each bearing 5 is in contact with a gland 6, the gland 6 is fixedly installed on the shell 1, and the main shaft 3 is allowed to rotate relative to the bearing 5 while the main shaft 3 is axially positioned.

Both ends of the main shaft 3 penetrate out of the shell 1 through the gland 6, one end of the main shaft 3 is provided with a belt pulley 7 matched with the main shaft, and the belt pulley 7 can be provided with a transmission belt and connected to an output shaft of a motor to be used as a power source for driving the main shaft 3 to rotate. The other end of the main shaft 3 is provided with a second positioning convex edge 8, the front side of the second positioning convex edge 8 is sleeved with a rear gasket 9 and a front gasket 10 which are matched with each other, a saw blade 11 is arranged between the rear gasket 9 and the front gasket 10, the second positioning convex edge 8 plays a positioning role in mounting the rear gasket 9, the rear gasket 9 and the front gasket 10 can clamp the saw blade 11 tightly, and the saw blade 11 can be ensured to rotate and cut along with the main shaft 3 while the mounting and positioning are achieved.

As shown in fig. 3, a first thread 12 is provided on the outer periphery of the main shaft 3 on one side of the front washer 10, a first lock nut 13 is mounted on the first thread 12 to be matched with the first thread 12, and the distance between the front washer 10 and the rear washer 9 can be adjusted by rotating the first lock nut 13, so that saw blades 11 with different thickness types can be clamped on the main shaft 3. A second thread 14 is arranged on the periphery of the main shaft 3 between the rear gasket 9 and the gland 6, a second locking nut 15 matched with the second thread 14 is installed on the second thread 14, a pressing sleeve 16 is arranged on the rear side of the second locking nut 15, one end face of the pressing sleeve 16 is in contact with the second locking nut 15, the other end face of the pressing sleeve 16 penetrates through the gland 6 to be in contact with the bearing 5, the pressing sleeve 16 can be enabled to press the bearing 5 on the end faces of the annular sleeve 25 and the first positioning convex edge 4 by rotating the second locking nut 15, and then the main shaft 3 is positioned in the steel inner sleeve 2.

In order to timely dissipate heat of the spindle, a first annular groove 17 is formed in the shell 1, a second annular groove 18 matched with the first annular groove 17 is formed in the periphery of the steel inner sleeve 2, the first annular groove 17 and the second annular groove 18 form a water cooling cavity 19, and a water inlet 20 and a water outlet 21 communicated with the water cooling cavity 19 are respectively formed in the shell 1. The heat generated by the friction of the main shaft is absorbed and taken away by the heat absorbing medium in the water cooling cavity 19, so that the main shaft is prevented from deforming in the rotating process, and the normal function of the main shaft is maintained.

When using a water-cooling saw bit main shaft assembly body time, 3 rotatory drive saw bits 11 of main shaft cut the operation, steel endotheca 2 and casing 1 keep relatively fixed, the friction produces most heat between rotatory main shaft 3 and the bearing 5, and bearing 5 global and 2 inner peripheral surfaces of steel endotheca contact, and bearing 5's terminal surface contacts with the terminal surface of annular cover 25, the heat that bearing 5 friction produced can be conducted via steel endotheca 2 and annular cover 25, because its area of contact is great, so its thermal conduction efficiency is also higher, and water-cooling cavity 19 near water-cooling steel endotheca 2 and the annular cover 25 position can furthest take away its inside heat absorption, plays the effect to the cooling of main shaft 3.

Further, in order to ensure that the heat absorbing medium entering from the water inlet 20 can flow circularly in the water cooling cavity 19 to achieve the purpose of absorbing heat to the maximum extent, rather than directly being discharged from the water outlet 21 after entering the water cooling cavity 19 from the water inlet 20, as shown in fig. 3 and 4, an annular water-blocking platform 22 is arranged in the water cooling cavity 19, the annular water-blocking platform 22 is located between the water inlet 20 and the water outlet 21 to divide the water cooling cavity 19 into two cavities, a notch 23 is further formed in the water-blocking platform 22 to connect the two cavities, and when the heat absorbing medium enters the water cooling cavity 19 from the water inlet 20, the cavity on one side of the water inlet 20 is preferentially filled, then enters the cavity on one side of the water outlet 21 through the notch 23, and finally is discharged from the water outlet 21, so that the heat absorbing medium is ensured to flow in the water cooling cavity 19 to achieve the purpose of absorbing heat to the maximum.

Furthermore, pagoda joints 24 are arranged on the water inlet 20 and the water outlet 21, and the pagoda joints 24 can be suitable for various heat-absorbing media such as oil, water and the like, can be quickly connected, and are convenient to assemble and disassemble and reliable in performance.

Furthermore, the shell 1 is an aluminum shell, the aluminum material has the characteristic of low mass per unit volume, the weight of the whole device can be reduced on the premise of ensuring the firmness, the aluminum shell also has good heat conduction performance, the steel inner sleeve 2, the annular sleeve 25 and the water cooling cavity 19 in the aluminum shell can be subjected to auxiliary heat dissipation, and the heat dissipation performance of the whole device is further improved.

In order to further improve the heat absorption of the heat absorbing medium in the water cooling cavity 19, as shown in fig. 5, the water inlet 20 and the water outlet 21 are respectively located at two ends of the water cooling cavity 19, a spiral flow guide plate 26 is arranged in the water cooling cavity 19, the spiral flow guide plate 26 forms a spiral flow guide groove in the water cooling cavity 19, and two ends of the spiral flow guide groove are respectively communicated with the water inlet 20 and the water outlet 21. The spiral guide plate 26 is arranged to enable the heat absorbing medium entering the water cooling cavity 19 through the water inlet 20 to flow spirally in the spiral guide plate 26, and the heat absorbing medium is forced to flow from one end of the water cooling cavity 19 to the other end, so that the contact area and the contact time of the heat absorbing medium and the steel inner sleeve 2 are improved, and the heat dissipation efficiency in the water cooling cavity 19 is further improved.

Technical scheme of the utility model not be restricted to the utility model the within range of embodiment. The technical contents not described in detail in the present invention are all known techniques.

Claims

1. The utility model provides a water-cooling saw bit main shaft assembly body which characterized in that: comprises a shell (1), a steel inner sleeve (2) is installed in the shell (1) in a matching manner, an annular sleeve (25) is arranged in the steel inner sleeve (2), a main shaft (3) is installed in the annular sleeve (25), a first positioning convex edge (4) is arranged on the periphery of the main shaft (3) positioned in the annular sleeve (25), bearings (5) matched with the main shaft (3) are installed in positions on two sides of the steel inner sleeve (2), one side surface of each bearing (5) is in contact with the end surfaces of the first positioning convex edge (4) and the annular sleeve (25), the other side surface of each bearing (5) is in contact with a gland (6), the glands (6) are fixedly installed on the shell (1), two ends of the main shaft (3) penetrate out of the shell (1) through the glands (6), a belt pulley (7) matched with the main shaft (3) is installed on one end of the main shaft, and the other end of the main shaft (3) is provided with, a rear gasket (9) and a front gasket (10) which are matched with each other are sleeved on the front side of the second positioning convex edge (8), a saw blade (11) is arranged between the rear gasket (9) and the front gasket (10), a first thread (12) is arranged on the periphery of the main shaft (3) on one side of the front gasket (10), a first locking nut (13) which is matched with the first thread (12) is arranged on the first thread (12), a second thread (14) is arranged on the periphery of the main shaft (3) between the rear gasket (9) and the gland (6), a second locking nut (15) which is matched with the second thread (14) is arranged on the second thread (14), a pressing sleeve (16) is arranged on the rear side of the second locking nut (15), one end face of the pressing sleeve (16) is contacted with the second locking nut (15), the other end face of the pressing sleeve (16) penetrates through the gland (6) to be contacted with the bearing (5), a first annular groove (17) is formed in, a second annular groove (18) matched with the first annular groove (17) is formed in the periphery of the steel inner sleeve (2), the first annular groove (17) and the second annular groove (18) form a water cooling cavity (19), and a water inlet (20) and a water outlet (21) communicated with the water cooling cavity (19) are formed in the shell (1) respectively.

2. The water-cooled saw blade spindle assembly of claim 1, wherein: an annular water-insulating platform (22) is arranged in the water-cooling cavity (19), the annular water-insulating platform (22) is positioned between the water inlet (20) and the water outlet (21), and a gap (23) is further formed in the water-insulating platform (22).

3. The water-cooled saw blade spindle assembly of claim 1, wherein: pagoda joints (24) are arranged on the water inlet (20) and the water outlet (21).

4. The water-cooled saw blade spindle assembly of claim 1, wherein: the housing (1) is an aluminum housing.

5. The water-cooled saw blade spindle assembly of claim 1, wherein: the water inlet (20) and the water outlet (21) are respectively positioned at two ends of the water cooling cavity (19), a spiral guide plate (26) is arranged in the water cooling cavity (19), the spiral guide plate (26) forms a spiral guide groove in the water cooling cavity (19), and two ends of the spiral guide groove are respectively communicated with the water inlet (20) and the water outlet (21).