阅读说明：本技术 一种法兰加工用钻孔设备 (Drilling equipment for flange machining ) 是由 于学明 于 2021-08-20 设计创作，主要内容包括：本发明属于法兰钻孔技术领域,具体公开了一种法兰加工用钻孔设备,包括加工台,加工台的顶端面一侧固定连接有钻孔组件,且加工台的顶端面另一侧设有中轴紧固件,加工台的两侧面靠近顶端位置均设有紧固组件,且加工台的一侧面靠近中间位置活动连接有抽拉盒；中轴紧固件包括开设在加工台顶端面另一侧的第一圆槽,且第一圆槽底端面开设有第二圆槽,第二圆槽的底端面活动连接有旋转座,且旋转座的顶端中心固定连接有紧固轴柱,紧固轴柱的外侧面开设有多个等距离放置的伸缩槽。通过设置的中轴紧固件,解决了现有技术中法兰紧固方式单一且紧固效果不够优良的技术问题,实现了丰富紧固方式以及提高紧固效果的技术效果。(The invention belongs to the technical field of flange drilling, and particularly discloses drilling equipment for flange machining, which comprises a machining table, wherein a drilling assembly is fixedly connected to one side of the top end surface of the machining table, a middle shaft fastener is arranged on the other side of the top end surface of the machining table, fastening assemblies are arranged on the two side surfaces of the machining table close to the top end, and a drawing box is movably connected to one side surface of the machining table close to the middle position; the axis fastener is including seting up the first circular slot at processing bench top terminal surface opposite side, and the second circular slot has been seted up to first circular slot bottom face, and the bottom face swing joint of second circular slot has the roating seat, and the top center fixedly connected with fastening jack-post of roating seat, and the lateral surface of fastening jack-post is seted up the flexible groove that a plurality of equidistance were placed. Through the axis fastener that sets up, solved among the prior art flange fastening mode single and fastening effect fine enough technical problem, realized richening the fastening mode and improve the technological effect of fastening effect.)

1. The drilling equipment for flange machining is characterized by comprising a machining table (1), wherein one side of the top end face of the machining table (1) is fixedly connected with a drilling assembly, the other side of the top end face of the machining table (1) is provided with a middle shaft fastener (10), two side faces of the machining table (1) are provided with fastening assemblies (12) close to the top end, and one side face of the machining table (1) is movably connected with a drawing box (11) close to the middle position;

the middle shaft fastener (10) comprises a first circular groove (1001) arranged on the other side of the top end face of the machining table (1), a second circular groove (1002) is formed in the bottom end face of the first circular groove (1001), a rotating seat (1003) is movably connected to the bottom end face of the second circular groove (1002), a fastening shaft column (1004) is fixedly connected to the center of the top end of the rotating seat (1003), a plurality of telescopic grooves (1008) which are arranged equidistantly are formed in the outer side face of the fastening shaft column (1004), a fastening plate (1006) is movably connected to the inner portion of the telescopic grooves (1008), a thread groove (1009) communicated with the telescopic grooves (1008) is formed in the inner portion of the fastening shaft column (1004), a thread column (1005) is connected to the inner portion of the thread groove (1009) in a threaded manner, the top end of the thread column (1005) extends out of the top end face of the fastening shaft column (1004) and is fixedly connected with a rotating button (1007), and one side, close to the thread groove (1009), of the fastening plate (1006) is in an inclined state, and the length of the bottom end surface of the fastening plate (1006) is larger than that of the top end surface of the fastening plate (1006).

2. The drilling equipment for flange processing according to claim 1, wherein a placement groove (10035) is formed in a bottom end face of the rotating base (1003), a rotating motor (10036) is fixedly connected to an interior of the placement groove (10035), and an output end of the rotating motor (10036) is fixedly connected to a top end face of the placement groove (10035) of the rotating base (1003).

3. The drilling equipment for flange processing according to claim 1, wherein two inclined push blocks (10031) with opposite inclined directions are fixedly connected to two sides of the outer side surface of the rotating base (1003), respectively, the inclined push blocks (10031) are located on the bottom end surface of the annular gap between the outer side surface of the rotating base (1003) and the inner wall of the second circular groove (1002), and the bottom end surface of the annular gap is provided with a plurality of dust guide through holes (10034) distributed at equal intervals.

4. A drilling apparatus for flange processing according to claim 3, wherein a dust collecting chamber (10037) is opened below the dust guiding through hole (10034), and the drawer (11) is movably connected to the inside of the dust collecting chamber (10037).

5. The drilling equipment for flange processing according to claim 1, wherein an annular track groove (10033) is formed in an edge of a bottom end surface of the rotating base (1003), an annular slide rail (10032) is fixedly connected to a position, corresponding to the annular track groove (10033), of the bottom end surface of the second circular groove (1002), and the annular track groove (10033) is clamped on the annular slide rail (10032) and can move.

6. Drilling equipment for flange working according to claim 1, characterised in that the tightening unit (12) comprises threaded rods (1203) near the top on both sides of the working table (1), one end of the threaded rod (1203) penetrates through the first round groove (1001) in a spiral mode and extends into the first round groove, both sides inside the first circular groove (1001) are provided with fastening arc plates (1201) movably connected with one end of a threaded rod (1203), a rotating head (1202) is fixedly connected at the middle position of the outer side surface of the fastening arc-shaped plate (1201), a rotating groove (1204) is arranged on one end surface of the threaded rod (1203) close to the fastening arc-shaped plate (1201), and the other end of the threaded rod (1203) extends to the outside of the processing table (1) and is fixedly connected with a hexagonal knob (1205), the rotating head (1202) is embedded in the rotating groove (1204) to move, and a rubber pad (1206) is fixedly connected to the inner side surface of the fastening arc-shaped plate (1201).

7. Drilling device for flange working according to claim 1, characterised in that the drilling assembly comprises a holder (2), the bottom end of the fixed seat (2) is fixed on one side of the top end surface of the processing table (1), the top end of the fixed seat (2) is fixedly connected with a fixed shaft (3), the top end of the fixed shaft (3) is fixedly connected with a top plate (4), the outer side surface of the fixed shaft (3) is movably connected with a movable sleeve (5), and the outer side surface of the movable sleeve (5) is fixedly connected with a connecting piece (6), one end of the connecting piece (6) far away from the movable sleeve (5) is fixedly connected with a cylinder (7), and the telescopic rod at the top end of the cylinder (7) is fixedly connected with one side of the bottom end surface of the top plate (4), the bottom end of the cylinder (7) is fixedly connected with a drilling motor (8), and the output end of the bottom of the drilling motor (8) is fixedly connected with a drill rod (9).

Technical Field

The invention relates to the technical field of flange drilling, in particular to drilling equipment for flange machining.

Background

The flange is also called a flange plate or a flange, and special drilling equipment is needed for drilling the flange. The existing drilling equipment mostly adopts a drilling machine, and the drilling machine mainly uses a drill bit to machine a hole on a workpiece. The drilling machine is characterized in that a workpiece is fixed and a cutter does rotary motion. The prior art has the following problems: the flange is mostly fixed only by adopting the outer side surface of the flange when drilling, the fastening mode is single, and the fastening effect is not good enough. Accordingly, one skilled in the art provides a drilling apparatus for flange processing to solve the problems set forth in the background art.

Disclosure of Invention

The embodiment of the application provides a drilling equipment is used in flange processing, has solved the single and not good enough technical problem of fastening effect of fastening mode among the prior art, has realized richening the fastening mode and has improved the technological effect of fastening effect.

The embodiment of the application provides drilling equipment for flange machining, which comprises a machining table, wherein a drilling assembly is fixedly connected to one side of the top end face of the machining table, a middle shaft fastener is arranged on the other side of the top end face of the machining table, fastening assemblies are arranged on two side faces of the machining table close to the top end, and a drawing box is movably connected to one side face of the machining table close to the middle position; the axis fastener is including seting up the first circular slot at processing platform top terminal surface opposite side, and the second circular slot has been seted up to first circular slot bottom terminal surface, the bottom terminal surface swing joint of second circular slot has the roating seat, and the top center fixedly connected with fastening shaft post of roating seat, the flexible groove that a plurality of equidistance were placed is seted up to the lateral surface of fastening shaft post, and the inside swing joint of flexible inslot has the mounting plate, the thread groove of flexible groove intercommunication is seted up to the inside of fastening shaft post, and the inside threaded connection of thread groove has the screw thread post, screw thread post top extends outstanding fastening shaft post top terminal surface and fixedly connected with knob, the inclined state is personally submitted to one side that the mounting plate is close to the thread groove, and mounting plate bottom terminal surface length is greater than mounting plate top terminal surface length. Through the axis fastener that sets up, solved among the prior art flange fastening mode single and fastening effect fine enough technical problem, realized richening the fastening mode and improve the technological effect of fastening effect.

Furthermore, a placing groove is formed in the bottom end face of the rotating seat, a rotating motor is fixedly connected to the inside of the placing groove, and the output end of the rotating motor is fixedly connected with the top end face of the placing groove of the rotating seat. During the use, the rotating electrical machines operation in the standing groove can drive the roating seat and carry out orderly intermittent type rotation, and then punches to the different positions of flange in proper order.

Furthermore, two sides of the outer side surface of the rotating base are respectively and fixedly connected with two inclined push blocks with opposite inclined directions, the inclined push blocks are positioned on the bottom end surface of the annular gap between the outer side surface of the rotating base and the inner wall of the second circular groove, and the bottom end surface of the annular gap is provided with a plurality of dust guide through holes distributed at equal intervals. When the rotary seat rotates, the inclined pushing block rotates along with the annular gap, and the rotating inclined pushing block pushes the processing chips falling into the annular gap into the dust guide through hole.

Furthermore, a dust collection cavity communicated with the dust guide through hole is formed below the dust guide through hole, and the pull box is movably connected inside the dust collection cavity. The processing chips fall into the dust guide through hole and then enter the drawing box of the dust collection cavity below, and the drawing box is convenient for later-stage workers to draw out for cleaning.

Furthermore, an annular rail groove is formed in the edge of the bottom end face of the rotating base, an annular sliding rail is fixedly connected to the position, corresponding to the annular rail groove, of the bottom end face of the second circular groove, and the annular rail groove is clamped on the annular sliding rail and can move. In the rotating process of the rotating seat, the annular track groove below the rotating seat rotates relative to the annular slide rail, so that the stability of the rotating seat in the rotating process is ensured.

Further, fastening components is including being located the threaded rod that processing platform both sides face is close to the top position, and the one end spiral of threaded rod runs through and extends to in the first circular slot, the inside both sides of first circular slot all are equipped with the fastening arc with threaded rod one end swing joint, and the lateral surface intermediate position fixedly connected with rotating head of fastening arc, the threaded rod is close to a terminal surface of fastening arc and has seted up the swivelling chute, and the other end of threaded rod extends to the outside and fixedly connected with hexagonal knob of processing platform, the rotating head inlays movably in the swivelling chute, the medial surface fixedly connected with rubber pad of fastening arc. During the use, after fastening the flange with the axis fastener, the rethread fastening subassembly carries out further fastening to the flange, specifically is: twist and change hexagonal knob for the threaded rod advances at the inside spiral of processing platform, and then promotes two fastening arcs and is close to first circular slot centre of a circle department, and the flange outside is fixed to the rubber pad clamp on the fastening arc, and the setting of rubber pad avoids fastening arc extrusion to damage the flange, and at this in-process, the rotating head rotates in the rotary tank and avoids fastening arc to follow the threaded rod and take place the rotation.

Further, the drilling subassembly includes the fixing base, and the fixing base bottom mounting is in top face one side of processing platform, the top fixedly connected with fixed axle of fixing base, and the top fixedly connected with roof of fixed axle, the lateral surface swing joint of fixed axle has the movable sleeve, and the lateral surface fixedly connected with connecting piece of movable sleeve, the one end fixedly connected with cylinder of movable sleeve is kept away from to the connecting piece, and the telescopic link on cylinder top and roof bottom face one side fixed connection, the bottom fixedly connected with drilling motor of cylinder, and the bottom output fixedly connected with drilling rod of drilling motor. During the use, start the cylinder, the telescopic link of cylinder stretches out and makes the cylinder move down, and the movable sleeve cover is followed on the fixed axle and is moved down the stability of guaranteeing that the cylinder moves down, and then makes drilling motor and drilling rod descend and be close to the flange machined surface, and finally, drilling motor operation drives the drilling rod rotation and changes the hole to the flange machined surface.

One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

1. because the center shaft fastener is adopted, when the fastening device is used, firstly, the flange middle through hole is sleeved outside the fastening shaft column of the center shaft fastener, the bottom end face of the flange is located on the top end face of the rotary seat, then the rotary button is screwed, and further the threaded column is driven to spirally move downwards in the threaded groove, along with the downward movement of the threaded column, the threaded column extrudes each fastening plate from the telescopic groove, and finally each fastening plate is extruded and fastened on the flange middle through hole, the center shaft fastener is matched with the traditional flange outer side face fixing mode, the technical problems that the flange fastening mode is single and the fastening effect is not good enough in the prior art are effectively solved, and the technical effects of enriching the fastening mode and improving the fastening effect are further realized.

2. Due to the fact that the fastening assembly is adopted for further fastening, the fastening assembly specifically comprises the following components: twist and change hexagonal knob for the threaded rod advances at the inside spiral of processing platform, and then promotes two fastening arcs and is close to first circular slot centre of a circle department, and the flange outside is fixed to the rubber pad clamp on the fastening arc, and the setting of rubber pad avoids fastening arc extrusion to damage the flange, and at this in-process, the rotating head rotates in the rotary tank and avoids fastening arc to follow the threaded rod and take place to rotate, has effectively improved the fastening effect of flange.

3. Due to the adoption of the inclined push block and the pull box, when the rotating motor drives the rotating seat to rotate, the inclined push block on the rotating seat slowly advances in the annular gap, so that residual scraps accumulated on the annular gap are pushed into the dust guide through hole, and the processing scraps fall into the dust guide through hole and then enter the pull box of the dust collection cavity below, so that a later-period worker can conveniently pull out the pull box to clean the dust collection cavity. And in the rotating process of the rotating seat, the annular track groove below the rotating seat rotates relative to the annular slide rail, so that the stability of the rotating seat in the rotating process is ensured.

Drawings

FIG. 1 is a schematic view of the overall structure of a drilling apparatus according to an embodiment of the present application;

FIG. 2 is a schematic structural view of a bottom bracket fastener according to an embodiment of the present disclosure;

FIG. 3 is a schematic structural view of a second circular groove and a rotary base according to an embodiment of the present disclosure;

FIG. 4 is an inside view of a first circular groove and a second circular groove in an embodiment of the present application;

FIG. 5 is an enlarged view of A in FIG. 4 according to an embodiment of the present application;

fig. 6 is a schematic structural view of a fastening assembly in an embodiment of the present application.

In the figure: 1. a processing table; 2. a fixed seat; 3. a fixed shaft; 4. a top plate; 5. a movable sleeve; 6. a connecting member; 7. a cylinder; 8. a drilling motor; 9. a drill stem; 10. a bottom bracket fastener; 1001. a first circular groove; 1002. a second circular groove; 1003. a rotating base; 10031. inclining the push block; 10032. an annular slide rail; 10033. an annular track groove; 10034. a dust-guiding through hole; 10035. a placement groove; 10036. a rotating electric machine; 10037. a dust collection chamber; 1004. fastening the shaft column; 1005. a threaded post; 1006. a fastening plate; 1007. a rotation knob; 1008. a telescopic groove; 1009. a thread groove; 11. a box is drawn out; 12. a fastening assembly; 1201. fastening the arc-shaped plate; 1202. rotating the head; 1203. a threaded rod; 1204. a rotating tank; 1205. a hexagonal knob; 1206. and (7) a rubber pad.

Detailed Description

Through the middle shaft fastening piece 10, the technical problems that in the prior art, the flange fastening mode is single, and the fastening effect is not good enough are solved, and the technical effects of enriching the fastening modes and improving the fastening effect are achieved.

In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.

Referring to fig. 1 to 6, in an embodiment of the present application, a drilling apparatus for flange processing includes a processing table 1, a drilling assembly is fixedly connected to one side of a top end surface of the processing table 1, a middle shaft fastener 10 is disposed on the other side of the top end surface of the processing table 1, fastening assemblies 12 are disposed on two side surfaces of the processing table 1 near the top end, and a drawing box 11 is movably connected to one side surface of the processing table 1 near the middle position; axis fastener 10 is including seting up the first circular slot 1001 at processing platform 1 top terminal surface opposite side, and second circular slot 1002 has been seted up to first circular slot 1001 bottom terminal surface, the bottom terminal surface swing joint of second circular slot 1002 has the roating seat 1003, and the top center fixedly connected with fastening stud 1004 of roating seat 1003, the flexible groove 1008 that a plurality of equidistance were placed is seted up to the lateral surface of fastening stud 1004, and the inside swing joint of flexible groove 1008 has mounting plate 1006, the thread groove 1009 that flexible groove 1008 communicates is seted up to the inside of fastening stud 1004, and the inside threaded connection of thread groove 1009 has screw thread post 1005, screw thread post 1005 top extends outstanding fastening stud 1004 top terminal surface and fixedly connected with knob 1007, the inclined state is personally submitted to one side that mounting plate 1006 is close to thread groove 1009, and mounting plate 1006 bottom terminal surface length is greater than mounting plate 1006 top terminal surface length. Through the middle shaft fastening piece 10, the technical problems that in the prior art, the flange fastening mode is single, and the fastening effect is not good enough are solved, and the technical effects of enriching the fastening modes and improving the fastening effect are achieved.

In fig. 1: the drilling subassembly includes fixing base 2, and 2 bottom mounting of fixing base are in top face one side of processing platform 1, the top fixedly connected with fixed axle 3 of fixing base 2, and the top fixedly connected with roof 4 of fixed axle 3, the lateral surface swing joint of fixed axle 3 has movable sleeve 5, and the lateral surface fixedly connected with connecting piece 6 of movable sleeve 5, the one end fixedly connected with cylinder 7 of movable sleeve 5 is kept away from to connecting piece 6, and the telescopic link on cylinder 7 top and roof 4 bottom face one side fixed connection, the bottom fixedly connected with drilling motor 8 of cylinder 7, and the bottom output end fixedly connected with drilling rod 9 of drilling motor 8. During the use, start cylinder 7, the telescopic link of cylinder 7 stretches out and makes cylinder 7 move down, and the movable sleeve 5 cover is followed on fixed axle 3 and is moved down the stability of guaranteeing that cylinder 7 moves down, and then makes drilling motor 8 and drilling rod 9 descend and be close to the flange machined surface, and finally, drilling motor 8 moves and drives the drilling rod 9 rotation and change the hole to the flange machined surface.

In fig. 3 and 4: standing groove 10035 has been seted up to the bottom face of roating seat 1003, and the inside fixedly connected with rotating electrical machines 10036 of standing groove 10035, rotating electrical machines 10036's output and the standing groove 10035 top end face fixed connection of roating seat 1003. During the use, the rotating electrical machines 10036 operation in the standing groove 10035 can drive roating seat 1003 and carry out orderly intermittent type rotation, and then punches to the different positions of flange in proper order.

In fig. 4 and 5: two inclined push blocks 10031 with opposite inclined directions are fixedly connected to two sides of the outer side surface of the rotating base 1003 respectively, the inclined push blocks 10031 are located on the bottom end surface of the annular gap between the outer side surface of the rotating base 1003 and the inner wall of the second circular groove 1002, and the bottom end surface of the annular gap is provided with a plurality of dust guide through holes 10034 distributed at equal intervals. When the rotary base 1003 rotates, the inclined push block 10031 follows the rotation in the annular gap, and the rotating inclined push block 10031 pushes the machining debris falling in the annular gap into the dust guide through hole 10034. A dust collecting cavity 10037 communicated with the dust guiding through hole 10034 is arranged below the dust guiding through hole 10034, and the pull box 11 is movably connected inside the dust collecting cavity 10037. The processing chips fall into the dust guide through hole 10034 and then enter the drawing box 11 of the dust collection cavity 10037 at the lower part, so that the later-stage workers can draw out the drawing box 11 for cleaning. Annular track groove 10033 has been seted up to roating seat 1003 bottom end face border, and second circular slot 1002 bottom end face corresponds the position fixedly connected with annular slide rail 10032 of annular track groove 10033, and annular track groove 10033 card is movable on annular slide rail 10032. In the rotating process of the rotating base 1003, the annular track groove 10033 below the rotating base rotates relative to the annular slide rail 10032, so as to ensure the stability of the rotating base 1003 in the rotating process.

In fig. 6: fastening components 12 is including being located processing platform 1 both sides face and being close to the threaded rod 1203 of top position, and the one end spiral of threaded rod 1203 runs through and extends to in the first circular slot 1001, the inside both sides of first circular slot 1001 all are equipped with the fastening arc 1201 with threaded rod 1203 one end swing joint, and the lateral surface intermediate position fixedly connected with rotating head 1202 of fastening arc 1201, threaded rod 1203 is close to a terminal surface of fastening arc 1201 and has seted up rotary groove 1204, and the other end of threaded rod 1203 extends to processing platform 1 outside and fixedly connected with hexagonal knob 1205, rotating head 1202 inlays movably in rotary groove 1204, the medial surface fixedly connected with rubber pad 1206 of fastening arc 1201. During the use, after fastening the flange with axis fastener 10, the rethread fastening subassembly 12 carries out further fastening to the flange, specifically is: screwing hexagonal knob 1205 for threaded rod 1203 advances at the inside spiral of processing platform 1, and then promotes two fastening arc 1201 and is close to first circular slot 1001 centre of a circle department, and the flange outside is fixed to the tight clamp of rubber pad 1206 on fastening arc 1201, and the setting of rubber pad 1206 avoids fastening arc 1201 to extrude and damage the flange, and at this in-process, rotating head 1202 rotates in rotatory groove 1204 and avoids fastening arc 1201 to follow threaded rod 1203 and take place to rotate.

The working principle is as follows: when the drilling equipment for flange machining is used, firstly, a middle through hole of a flange is sleeved outside a fastening shaft column 1004 of a middle shaft fastener 10, the bottom end face of the flange is located on the top end face of a rotating seat 1003, then a rotating button 1007 is screwed, and a threaded column 1005 is driven to spirally move downwards in a threaded groove 1009, along with the downward movement of the threaded column 1005, the threaded column 1005 extrudes each fastening plate 1006 from a telescopic groove 1008, and finally each fastening plate 1006 is extruded and fastened on the middle through hole of the flange.

After the central shaft fastener 10 is inserted into the middle through hole of the flange for fastening, the further fastening is performed through the fastening component 12, specifically: screwing hexagonal knob 1205 for threaded rod 1203 advances at the inside spiral of processing platform 1, and then promotes two fastening arc 1201 and is close to first circular slot 1001 centre of a circle department, and the flange outside is fixed to the tight clamp of rubber pad 1206 on fastening arc 1201, and the setting of rubber pad 1206 avoids fastening arc 1201 to extrude and damage the flange, and at this in-process, rotating head 1202 rotates in rotatory groove 1204 and avoids fastening arc 1201 to follow threaded rod 1203 and take place to rotate.

After the flange is fastened twice, the cylinder 7 is started, the telescopic rod of the cylinder 7 extends out to enable the cylinder 7 to move downwards, the movable sleeve 5 is sleeved on the fixed shaft 3 to move downwards along with the fixed shaft to guarantee the stability of the cylinder 7 moving downwards, then the drilling motor 8 and the drill rod 9 are made to descend to be close to a flange machining face, and finally the drilling motor 8 operates to drive the drill rod 9 to rotate the flange machining face to rotate.

In the drilling process, the piece that the drilling produced gets into the annular gap between roating seat 1003 lateral surface and the second circular slot 1002 inner wall, and after a flange hole drilling, cylinder 7 moves once more and drives drilling rod 9 and shifts up, loosen fastening components 12 again, the orderly intermittent type nature of rotating electrical machines 10036 moves, drive the certain angle of roating seat 1003 rotation, make next flange drilling position aim at drilling rod 9, afterwards, screw up fastening components 12, start cylinder 7 and drill once more, finish all drilling processes in proper order. In addition, when the rotating motor 10036 drives the rotating base 1003 to rotate, the inclined pushing block 10031 on the rotating base 1003 advances slowly in the annular gap, and then pushes the residual scraps accumulated on the annular gap into the dust guide through hole 10034, and the processing scraps fall into the dust guide through hole 10034 and then enter the drawing box 11 of the dust collection cavity 10037 below, so that the later-period staff can draw out the drawing box 11 for cleaning. In the rotating process of the rotating base 1003, the annular track groove 10033 below the rotating base rotates relative to the annular slide rail 10032, so as to ensure the stability of the rotating base 1003 in the rotating process.

The above description is only for the preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can substitute or change the technical solution and its concept of the present application within the technical scope disclosed in the present application, and shall be covered by the scope of the present application.