阅读说明：本技术 一种内螺纹铜管智能成型机 (Intelligent forming machine for internal thread copper pipe ) 是由 许湛芦 何晨辉 冯锦剑 罗奇梁 雷军 肖文云 安纯亮 于 2021-09-23 设计创作，主要内容包括：本发明提供一种内螺纹铜管智能成型机,属于铜管加工技术领域,由底座、夹持器和钻头组构成,夹持器与底座的内壁转动连接,钻头组与底座的上表面滑动连接,底座靠近夹持器的一侧设置有冷却装置,冷却装置包括支撑杆、驱动机和冷却板,支撑杆靠近夹持器的一侧与底座固定连接,驱动机与支撑杆固定连接,支撑杆的内壁转动连接有转杆,转杆的表面套接有传动齿轮,支撑杆的数量为两个,两个支撑杆以夹持器为对称轴呈轴对称设置。本发明通过设置驱动机、冷却板和导液管,解决了现有市面上多数的铜管在内螺纹的成型过程中,铜管内部与钻头接触,接触所产生的摩擦易使铜管变热,从而导致铜管变形。(The invention provides an intelligent forming machine for an internal thread copper pipe, which belongs to the technical field of copper pipe processing and comprises a base, a holder and a drill bit group, wherein the holder is rotationally connected with the inner wall of the base, the drill bit group is slidably connected with the upper surface of the base, one side of the base, which is close to the holder, is provided with a cooling device, the cooling device comprises a support rod, a driving machine and a cooling plate, one side of the support rod, which is close to the holder, is fixedly connected with the base, the driving machine is fixedly connected with the support rod, the inner wall of the support rod is rotationally connected with a rotating rod, the surface of the rotating rod is sleeved with a transmission gear, the number of the support rods is two, and the two support rods are axially symmetrically arranged by taking the holder as a symmetry axis. The invention solves the problem that the friction generated by the contact between the inside of the copper pipe and the drill bit easily heats the copper pipe in the forming process of internal threads of most of the copper pipes on the market by arranging the driving machine, the cooling plate and the liquid guide pipe, thereby causing the deformation of the copper pipe.)

1. The utility model provides an internal thread copper pipe intelligence make-up machine, it comprises base (1), holder (2) and drill bit group (3), its characterized in that: holder (2) rotate with the inner wall of base (1) and be connected, the last sliding surface connection of drill bit group (3) and base (1), one side that base (1) is close to holder (2) is provided with cooling device, and cooling device includes bracing piece (4), driving machine (5) and cooling plate (11), and one side and base (1) fixed connection that bracing piece (4) are close to holder (2), driving machine (5) and bracing piece (4) fixed connection, the inner wall of bracing piece (4) rotates and is connected with bull stick (6), and drive gear (7) have been cup jointed on the surface of bull stick (6), and the quantity of bracing piece (4) is two, and two bracing pieces (4) use holder (2) to be axisymmetric setting for the symmetry axis.

2. An intelligent forming machine for internally threaded copper pipes as defined in claim 1 wherein: one side of the rotating rod (6) far away from the transmission gear (7) is sleeved with a fixed gear (8), the inner wall of the supporting rod (4) is rotatably connected with four driving chains (9) which are symmetrically arranged, one side of each driving chain (9) far away from the clamp holder (2) is sleeved with a connecting rod (10), and one side of each connecting rod (10) far away from the supporting rod (4) is fixedly connected with a cooling plate (11).

3. An intelligent internal thread copper pipe forming machine as claimed in claim 2, wherein: the inner wall sliding connection of base (1) has and holds box (12), holds box (12) and is close to catheter (13) that two symmetries of one side fixedly connected with of drill bit group (3) set up, and catheter (13) and the inner wall sliding connection of base (1), one side and bracing piece (4) sliding connection that base (1) were kept away from in catheter (13).

4. An intelligent internal thread copper pipe forming machine as claimed in claim 3, wherein: the driving gear (7) is in transmission connection with the driving end of the driving machine (5), the driving gear (7) is in rotation connection with the inner wall of the supporting rod (4), and the fixed gear (8) is in rotation connection with the inner wall of the supporting rod (4).

5. An intelligent internal thread copper pipe forming machine as claimed in claim 4, wherein: the transmission gear (7) is in transmission connection with the inner wall of the driving chain (9), the fixed gear (8) is in transmission connection with the inner wall of the driving chain (9), and the connecting rod (10) is in sliding connection with the inner wall of the supporting rod (4).

6. An intelligent internal thread copper pipe forming machine as claimed in claim 5, wherein: the inner wall of base (1) is provided with cleaning device, and cleaning device is including changeing quick-witted (14), changes the inner wall fixed connection of quick-witted (14) and base (1), changes the drive end fixedly connected with dead lever (15) of machine (14), and one side fixedly connected with hydraulic stem (16) of driver (5) are kept away from in dead lever (15), and one side that dead lever (15) were kept away from in hydraulic stem (16) is provided with cleaning block (17).

7. An intelligent internal thread copper pipe forming machine as claimed in claim 6, wherein: the inner wall fixedly connected with of clean piece (17) spacing spring (18), the inner wall sliding connection of clean piece (17) has stopper (19), and the inner wall of stopper (19) rotates and is connected with fixture block (20), and one side and stopper (19) fixed connection of clean piece (17) are kept away from in spacing spring (18).

8. An intelligent internal thread copper pipe forming machine as claimed in claim 7, wherein: the fixed rod (15) is connected with the inner wall of the base (1) in a sliding mode, and the cleaning block (17) is connected with the inner wall of the base (1) in a sliding mode.

9. An intelligent internal thread copper pipe forming machine as claimed in claim 8, wherein: the number of the limiting blocks (19) is four, and the limiting blocks (19) are arranged in a circumferential array.

10. An intelligent internal thread copper pipe forming machine as claimed in claim 9, wherein: one side of the limiting block (19) far away from the cleaning block (17) is connected with the hydraulic rod (16) in a sliding mode, one side of the clamping block (20) far away from the cleaning block (17) is connected with the hydraulic rod (16) in a clamping mode, and the inner wall of the cleaning block (17) is connected with the drill bit group (3) in a sliding mode.

Technical Field

The invention belongs to the technical field of copper pipe processing, and particularly relates to an intelligent forming machine for an internal thread copper pipe.

Background

The internal thread copper pipe is also called as a non-smooth pipe, and refers to an internal thread TP2 red copper pipe with a smooth outer surface, a certain number of internal surfaces and a certain regular thread.

The copper tube is also called copper tube. One type of non-ferrous metal pipe is a pressed and drawn seamless pipe. The copper pipe has the characteristics of good electrical conductivity and thermal conductivity, so that the copper pipe is put into production in large quantity, and during the forming process of internal threads of most of the existing copper pipes on the market, the interior of the copper pipe is in contact with a drill bit, and friction generated by the contact easily heats the copper pipe, so that the copper pipe is deformed, and improvement is needed.

Disclosure of Invention

The invention aims to solve the problem that friction generated by contact between the interior of a copper pipe and a drill bit easily causes the copper pipe to become hot, so that the copper pipe is deformed in the prior art, and provides an intelligent forming machine for an internal thread copper pipe.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides an internal thread copper pipe intelligence make-up machine, it comprises base, holder and drill bit group, and the holder is connected with the inner wall rotation of base, the upper surface sliding connection of drill bit group and base, one side that the base is close to the holder is provided with cooling device, cooling device includes bracing piece, driving machine and cooling plate, and one side and base fixed connection that the bracing piece is close to the holder, driving machine and bracing piece fixed connection, the inner wall rotation of bracing piece are connected with the bull stick, and drive gear has been cup jointed on the surface of bull stick, and the quantity of bracing piece is two, and two bracing pieces use the holder to be axisymmetric setting as the symmetry axis. One side of the rotating rod, which is far away from the transmission gear, is sleeved with a fixed gear, the inner wall of the supporting rod is rotatably connected with four driving chains which are symmetrically arranged, one side of the driving chains, which is far away from the holder, is sleeved with a connecting rod, and one side of the connecting rod, which is far away from the supporting rod, is fixedly connected with a cooling plate.

The inner wall sliding connection of base has the box that holds, holds box and is close to the liquid pipe of one side fixedly connected with two symmetry settings of drill bit group, liquid pipe and the inner wall sliding connection of base, and one side and the bracing piece sliding connection of liquid pipe far away from the base.

The driving gear is in transmission connection with the driving end of the driving machine, the driving gear is in rotation connection with the inner wall of the supporting rod, and the fixed gear is in rotation connection with the inner wall of the supporting rod.

The transmission gear is in transmission connection with the inner wall of the driving chain, the fixed gear is in transmission connection with the inner wall of the driving chain, and the connecting rod is in sliding connection with the inner wall of the supporting rod.

The inner wall of base is provided with cleaning device, cleaning device is including changeing the machine, change the inner wall fixed connection of machine and base, the drive end fixedly connected with dead lever of changeing the machine, one side fixedly connected with hydraulic stem of driving machine is kept away from to the dead lever, one side that the dead lever was kept away from to the hydraulic stem is provided with the cleaning block, it relies on the manual work to clean to have solved present majority drill bit on the market, the workman is at the difficult dynamics of mastering to the clear in-process of drill bit, thereby lead to the thread damage on the drill bit, make the screw thread scrap, and the workman is careless easily leads to the problem of finger fish tail when clean slightly.

The inner wall fixedly connected with of clean piece has the spacing spring, and the inner wall sliding connection of clean piece has the stopper, and the inner wall of stopper rotates and is connected with the fixture block, and one side and the stopper fixed connection of clean piece are kept away from to spacing spring.

The fixed rod is connected with the inner wall of the base in a sliding mode, and the cleaning block is connected with the inner wall of the base in a sliding mode.

The quantity of stopper is four, four the stopper is the circumference array setting.

One side of the limiting block, which is far away from the cleaning block, is connected with the hydraulic rod in a sliding mode, one side of the clamping block, which is far away from the cleaning block, is connected with the hydraulic rod in a clamping mode, and the inner wall of the cleaning block is connected with the drill bit group in a sliding mode.

Compared with the prior art, the invention has the advantages and positive effects that,

1. in the invention, by arranging the cooling device, when the copper pipe is processed, a switch of a driving machine is opened, the driving machine is electrified and rotates, the driving machine rotates and is meshed with the transmission gear, the transmission gear is driven to rotate in the process of being meshed with the driving machine, the transmission gear drives the rotating rod to rotate simultaneously, the rotating rod rotates and drives the fixed gear to rotate, the transmission gear is meshed with the driving chain in the process of rotating the fixed gear and drives the driving chain to rotate, the driving chain drives the connecting rod to displace in the process of rotating, the cooling plate is driven to displace in the process of displacing, the cooling plate covers the surface of the copper pipe in the process of displacing, meanwhile, cooling liquid enters the cooling plate through the liquid guide pipe and cools the copper pipe along with the cooling plate, and by arranging the driving machine, the cooling plate and the liquid guide pipe, the problem that most of the copper pipe on the existing market in the process of forming internal threads is solved, the copper pipe is contacted with a drill bit, and the friction generated by the contact easily causes the copper pipe to become hot, thereby causing the deformation of the copper pipe.

2. In the invention, through arranging a cleaning device, when the forming machine is in a stop state, a power switch of the rotary machine is turned on, the rotary machine is powered on to work, the fixed rod is driven to rotate during the working process of the rotary machine, the fixed rod rotates to drive the hydraulic rod to displace, the hydraulic rod displaces to drive the cleaning block to displace, when the fixed rod rotates to an upright state, the hydraulic rod operates to push the cleaning block to the drill bit, the cleaning block is pushed to the surface of the drill bit, the drill bit is cleaned in the cleaning block along with the operation of the drill bit group, when the cleaning block needs to be replaced, the fixture block is stirred, the fixture block is forced to withdraw from the hydraulic rod, the limiting block loses constraint after the fixture block withdraws from the hydraulic rod, the limiting block is pressed along with the operation of the limiting block, the limiting block is forced to slide in the cleaning block, the limiting spring is forced to deform, the deformation of spacing spring loses the constraint to the stopper, and the stopper loses the constraint and breaks away from the hydraulic stem, along with reaching the cleaning block alright dismantle the change, change the machine through setting up, the dead lever, hydraulic stem and cleaning block, it relies on the manual work to have solved the clean in-process of most drill bits on the present market and cleans, the workman is at the difficult dynamics of mastering to the clear in-process of drill bit to lead to the screw thread on the drill bit to damage, make the screw thread scrap, and the workman is careless easily when clean leads to pointing the fish tail problem of finger.

Drawings

FIG. 1 is a schematic perspective view of an intelligent forming machine for an internal thread copper pipe according to the present invention;

FIG. 2 is an exploded view of the intelligent forming machine for internal threaded copper pipes shown in FIG. 1;

FIG. 3 is a schematic structural view of a cooling device in the intelligent forming machine for internal thread copper pipes shown in FIG. 1;

FIG. 4 is a schematic structural view of a cleaning device in the intelligent forming machine for internal thread copper pipes shown in FIG. 1;

fig. 5 is a schematic structural view of a position a in the intelligent forming machine for the internal thread copper pipe shown in fig. 4.

Illustration of the drawings: 1. a base; 2. a holder; 3. a drill bit group; 4. a support bar; 5. a driver; 6. a rotating rod; 7. a transmission gear; 8. fixing a gear; 9. a drive chain; 10. a connecting rod; 11. a cooling plate; 12. a containing box; 13. a catheter; 14. turning the machine; 15. fixing the rod; 16. a hydraulic lever; 17. a cleaning block; 18. a limiting spring; 19. a limiting block; 20. and (7) clamping blocks.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and thus the present invention is not limited to the specific embodiments of the present disclosure.

Embodiment 1, as shown in fig. 1 to 5, an intelligent forming machine for an internal thread copper pipe comprises a base 1, a holder 2 and a drill bit group 3, wherein the holder 2 is rotatably connected with the inner wall of the base 1, the drill bit group 3 is slidably connected with the upper surface of the base 1, and a cooling device is arranged on one side of the base 1 close to the holder 2.

As shown in fig. 1 and 3, the cooling device comprises a support rod 4, a driving machine 5 and a cooling plate 11, one side of the support rod 4 close to the holder 2 is fixedly connected with the base 1, the driving machine 5 is fixedly connected with the support rod 4, the inner wall of the support rod 4 is rotatably connected with a rotating rod 6, a transmission gear 7 is sleeved on the surface of the rotating rod 6, the number of the support rods 4 is two, the two support rods 4 are arranged in axial symmetry with the holder 2 as a symmetry axis, when a copper pipe is processed, a switch of the driving machine 5 is turned on, the driving machine 5 is electrified to rotate, the driving machine 5 is rotated to be meshed with the transmission gear 7, the transmission gear 7 is driven to rotate in the process of being meshed with the driving machine 5, the rotating rod 6 is driven to rotate while the transmission gear 7 rotates, the rotating rod 6 rotates along with the fixed gear 8, the transmission gear 7 is meshed with the driving chain 9 in the process of rotating with the fixed gear 8, the driving chain 9 is driven to rotate, the driving chain 9 drives the connecting rod 10 to displace in the rotating process, the cooling plate 11 is driven to displace in the displacement process of the connecting rod 10, the cooling plate 11 covers the surface of the copper pipe in the displacement process, meanwhile, cooling liquid enters the cooling plate 11 through the liquid guide pipe 13, the copper pipe is cooled by the driving machine 5 and the cooling plate 11 and the liquid guide pipe 13, the problem that the copper pipe is easy to heat due to friction generated by contact in the forming process of internal threads of most copper pipes on the market is solved, the copper pipe is in contact with a drill bit, and therefore the copper pipe is deformed is solved.

One side that the bull stick 6 kept away from drive gear 7 has cup jointed fixed gear 8, the inner wall of bracing piece 4 rotates and is connected with the driving chain 9 that four symmetries set up, connecting rod 10 has been cup jointed to one side that holder 2 was kept away from to driving chain 9, one side fixedly connected with cooling plate 11 of bracing piece 4 is kept away from to connecting rod 10, the shaping in-process of screw thread including having solved the copper pipe of present majority on the market, copper intraduct and drill bit contact, the produced friction of contact easily makes the copper pipe become hot, thereby lead to the problem of copper pipe deformation.

Base 1's inner wall sliding connection has and holds box 12, hold box 12 and be close to the catheter 13 that two symmetries of one side fixedly connected with set 3 of drill bit set, catheter 13 and base 1's inner wall sliding connection, one side and bracing piece 4 sliding connection that base 1 was kept away from to catheter 13, the shaping in-process of screw thread including having solved the copper pipe of majority on the current market, copper intraduct and drill bit contact, the produced friction of contact easily makes the copper pipe become hot, thereby lead to the problem of copper pipe deformation.

The transmission gear 7 is in transmission connection with the driving end of the driving machine 5, the transmission gear 7 is in rotation connection with the inner wall of the supporting rod 4, and the fixed gear 8 is in rotation connection with the inner wall of the supporting rod 4, so that the problem that the copper pipe is easy to heat due to friction generated by contact between the inside of the copper pipe and a drill bit in the forming process of internal threads of most copper pipes on the market at present is solved.

The transmission gear 7 is in transmission connection with the inner wall of the driving chain 9, the fixed gear 8 is in transmission connection with the inner wall of the driving chain 9, and the connecting rod 10 is in sliding connection with the inner wall of the supporting rod 4, so that the problem that the copper pipe is easy to heat due to friction generated by contact between the inside of the copper pipe and a drill bit in the forming process of internal threads of most copper pipes on the market at present is solved.

The upper section of the copper pipe is matched to achieve the effect that when the copper pipe is machined, a switch of a driving machine 5 is turned on, the driving machine 5 is electrified to rotate, the driving machine 5 rotates to be meshed with a transmission gear 7, the transmission gear 7 is driven to rotate in the process of being meshed with the driving machine 5, the transmission gear 7 drives a rotating rod 6 to rotate simultaneously, the rotating rod 6 rotates to drive a fixed gear 8 to rotate, the transmission gear 7 is meshed with a driving chain 9 in the rotating process of the fixed gear 8, the driving chain 9 is driven to rotate, a connecting rod 10 is driven to displace in the rotating process of the driving chain 9, a cooling plate 11 is driven to displace in the displacement process of the connecting rod 10, the cooling plate 11 covers the surface of the copper pipe in the displacement process, meanwhile, cooling liquid enters the cooling plate 11 through a liquid guide pipe 13 and cools the copper pipe along with the cooling plate 11, and the copper pipe is cooled through the arrangement of the driving machine 5, The cooling plate 11 and the liquid guide pipe 13 solve the problem that the friction generated by the contact between the inside of the copper pipe and a drill bit is easy to heat the copper pipe in the forming process of internal threads of most of the existing copper pipes on the market, so that the copper pipe is deformed.

As shown in fig. 1 and 5, a cleaning device is arranged on the inner wall of the base 1, the cleaning device comprises a rotating machine 14, the rotating machine 14 is fixedly connected with the inner wall of the base 1, a fixed rod 15 is fixedly connected with the driving end of the rotating machine 14, a hydraulic rod 16 is fixedly connected with one side of the fixed rod 15 far away from the driving machine 5, a cleaning block 17 is arranged on one side of the hydraulic rod 16 far away from the fixed rod 15, when the forming machine is in a stop state, a power switch of the rotating machine 14 is turned on, the rotating machine 14 works along with power on, the fixed rod 15 is driven to rotate during the work of the rotating machine 14, the fixed rod 15 rotates to drive the hydraulic rod 16 to displace, the hydraulic rod 16 displaces to drive the cleaning block 17 to displace, when the fixed rod 15 rotates to an upright state, the hydraulic rod 16 operates to push the cleaning block 17 towards the drill bit, the cleaning block 17 is driven along with the drill bit surface, when the drill bit group 3 is operated and the drill bit is cleaned in the cleaning block 17, when the cleaning block 17 needs to be replaced, the fixture block 20 is shifted, the fixture block 20 is forced to withdraw from the hydraulic rod 16, the limiting block 19 loses the constraint after the fixture block 20 withdraws from the hydraulic rod 16, the limiting block 19 is forced to slide in the cleaning block 17, the limiting spring 18 is stressed and deformed when the limiting block 19 slides, the limiting spring 18 is deformed and loses the constraint on the limiting block 19, the limiting block 19 loses the constraint and is separated from the hydraulic rod 16, the follow-up cleaning block 17 can be detached and replaced, and through the arrangement of the rotator 14, the fixing rod 15, the hydraulic rod 16 and the cleaning block 17, the problems that most drill bits on the market are cleaned manually at present, workers cannot easily master the force during the drill bit cleaning process, and therefore threads on the drill bit are damaged are solved, the thread is scrapped, and workers can easily scratch fingers carelessly when cleaning.

Inner wall fixedly connected with limit spring 18 of cleaning block 17, inner wall sliding connection of cleaning block 17 has stopper 19, stopper 19's inner wall rotates and is connected with fixture block 20, one side and stopper 19 fixed connection of cleaning block 17 are kept away from to limit spring 18, change machine 14 through setting up, dead lever 15, hydraulic stem 16 and cleaning block 17, it relies on the manual work to clean to have solved present the majority drill bit on the market, the workman is at the difficult dynamics of mastering to the clear in-process of drill bit, thereby lead to the screw thread damage on the drill bit, make the screw thread scrap, and the workman is careless easily leads to pointing the fish tail problem when clean slightly.

The fixed rod 15 is connected with the inner wall of the base 1 in a sliding way, and the cleaning block 17 is connected with the inner wall of the base 1 in a sliding way.

The quantity of stopper 19 is four, and four stopper 19 are the circumference array setting, through setting up quick-witted 14, dead lever 15, hydraulic stem 16 and cleaning block 17 of commentaries on classics, have solved present on the market that most drill bits are clean to rely on the manual work to clean, and the workman is at the difficult dynamics of mastering to the clear in-process of drill bit to lead to the screw thread damage on the drill bit, make the screw thread scrap, and the workman is careless easily when clean leads to the problem of finger fish tail.

Stopper 19 keeps away from one side and the 16 sliding connection of hydraulic stem of cleaning block 17, one side and the 16 joint of hydraulic stem of cleaning block 17 are kept away from to fixture block 20, the inner wall and the 3 sliding connection of drill bit group of cleaning block 17, through setting up commentaries on classics machine 14, dead lever 15, hydraulic stem 16 and cleaning block 17, it relies on the manual work to clean to have solved present the clean of most drill bits on the market, the workman is at the difficult dynamics of mastering to the clear in-process of drill bit, thereby lead to the screw thread damage on the drill bit, make the screw thread scrap, and the workman is careless easily to lead to the problem of finger fish tail when clean slightly.

The upper section of the cleaning device is matched to achieve the effect that when the forming machine is in a stop state, a power switch of the rotary machine 14 is turned on, the rotary machine 14 is electrified to work, the fixing rod 15 is driven to rotate in the working process of the rotary machine 14, the fixing rod 15 rotates to drive the hydraulic rod 16 to displace, the hydraulic rod 16 displaces to drive the cleaning block 17 to displace, when the fixing rod 15 rotates to an upright state, the hydraulic rod 16 operates to push the cleaning block 17 to the drill bit, the cleaning block 17 is driven to be pushed to the surface of the drill bit, the drill bit group 3 is driven and operated, the drill bit is driven and cleaned in the cleaning block 17, when the cleaning block 17 needs to be replaced, the fixture block 20 is shifted, the fixture block 20 is forced to withdraw from the hydraulic rod 16, after the fixture block 20 is withdrawn from the hydraulic rod 16, the limit block 19 is not bound, the limit block 19 is driven and pressed, the limit block 19 is forced to slide into the cleaning block 17, pressure is exerted to limiting spring 18 to the gliding in-process of stopper 19, limiting spring 18 atress deformation, limiting spring 18 deformation loses the constraint to stopper 19, stopper 19 loses the constraint and breaks away from hydraulic stem 16, along with reaching cleaning block 17 alright dismantle the change, through setting up quick-witted 14 changes, dead lever 15, hydraulic stem 16 and cleaning block 17, it cleans to have solved the clean artifical of reliance of the drill bit of majority on the present market, the workman is at the difficult mastered dynamics of in-process to the drill bit, thereby lead to the screw thread damage on the drill bit, make the screw thread scrap, and the workman carelessly leads to the problem of finger fish tail when cleaning slightly.

The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention in other forms, and any person skilled in the art may apply the above modifications or changes to the equivalent embodiments with equivalent changes, without departing from the technical spirit of the present invention, and any simple modification, equivalent change and change made to the above embodiments according to the technical spirit of the present invention still belong to the protection scope of the technical spirit of the present invention.