A clamping device

Abstract

The invention discloses a clamping device, comprising a Z-shaped clamp body, a sleeve, a first stud, a screw, a clamping assembly and a fixing platform assembly, wherein a first stud is fixed to the left and right ends of the Z-shaped clamp body respectively, a plurality of Z-shaped clamp bodies are sleeved on the screw, at least one sleeve is sleeved on the screw, a Z-shaped clamp body is fixed to the upper end and the lower end of the sleeve respectively, the screw is inserted on the fixing platform assembly, a clamping assembly is arranged on the left and right ends of the Z-shaped clamp body respectively, and the clamping assembly is rotatably connected to the Z-shaped clamp body through the first stud; the invention belongs to the technical field of household goods, and the purpose of the invention is to solve the problem in the prior art that the curtain has poor ventilation effect or poor sunshade effect when exposed to sunlight; the technical effect achieved is: the clamping device enables the curtain to be used without large swinging when the window is opened, so that it can play the effect of both sunshade and ventilation.

Description

Technical Field

[0001] The present invention relates to the technical field of household products, and in particular to a clamping device. Background Art

[0002] In the hot summer, the main function of curtains during the day is to block the sun. The existing ordinary curtains need to be closed when in use, otherwise the curtains may swing greatly and the sun-blocking effect is not good. If the curtains are used after closing the windows, although the sun-blocking effect is better, it is not conducive to indoor air circulation. Summary of the invention

[0003] To this end, the present invention provides a clamping device to solve the problem in the prior art that the curtain has poor ventilation effect or poor sunshade effect when exposed to sunlight.

[0004] In order to achieve the above object, the present invention provides the following technical solutions:

[0005] According to a first aspect of the present invention, a clamping device comprises a Z-shaped clamp body, a sleeve, a first stud, a screw, a clamping assembly and a fixed platform assembly, wherein a first stud is fixed to each of the left and right ends of the Z-shaped clamp body, a plurality of Z-shaped clamp bodies are sleeved on the screw, at least one sleeve is sleeved on the screw, a Z-shaped clamp body is fixed to each of the upper and lower ends of the sleeve, the screw is inserted into the fixed platform assembly, a clamping assembly is provided at each of the left and right ends of the Z-shaped clamp body, and the clamping assembly is rotatably connected to the Z-shaped clamp body through the first stud.

[0006] Among them, the shape formed by the clamping components arranged at the left and right ends of the Z-shaped clamp body and the Z-shaped clamp body is a "Z" shape; a nut is installed above the top Z-shaped clamp body, and a nut is installed below the bottom Z-shaped clamp body. Multiple Z-shaped clamp bodies are fixed by the arrangement of nuts and at least one sleeve.

[0007] Furthermore, the Z-shaped clamp body includes a clamp body and an adjustment plate, an adjustment plate is respectively provided at the left and right ends of the clamp body, a first stud is welded at the center position of the adjustment plate, a clamp body is respectively fixed at the upper end and the lower end of the sleeve, the clamping assembly is rotatably connected to the adjustment plate, the adjustment plate is rotatably connected to the clamping assembly through the first stud, and the screw passes through the clamp body and is detachably connected to the fixed platform assembly.

[0008] Furthermore, the Z-shaped clamp body also includes an adjustment hole, a plurality of adjustment holes are provided on the adjustment plate, the plurality of adjustment holes are evenly distributed around the first stud, and the clamping assembly is detachably connected to the adjustment hole.

[0009] Furthermore, the Z-shaped clamp body also includes a screw insertion hole. The center of the Z-shaped clamp body is provided with a screw insertion hole. The screw passes through the screw insertion hole and is detachably connected to the fixing platform assembly.

[0010] Furthermore, it also includes a first plug hole. The lower end of the screw rod is provided with the first plug hole, and the screw rod is bolted to the fixing platform assembly through the first plug hole.

[0011] Furthermore, the fixed platform assembly includes a first fixed plate, a first fixed hole, a first fixed rod, a first screw groove and a second socket, the screw is inserted into the first screw groove and is detachably connected to the first screw groove, the first screw groove is provided with a second socket, the first socket and the second socket are connected by bolts, the first screw groove is fixed to the upper end of the first fixed rod, the first fixed plate is fixed to the lower end of the first fixed rod, and at least one first fixed hole is provided on the first fixed plate.

[0012] Furthermore, the fixed platform assembly includes a second fixed plate, a second fixed rod, a second screw groove and a third socket. The second fixed rod is provided with a second screw groove at the upper end, the second fixed plate is provided with a second fixed rod at the lower end, the second screw groove is provided with a third socket, the screw is inserted into the second screw groove and is detachably connected to the second screw groove, and the first socket is connected to the third socket by bolts.

[0013] Furthermore, the clamping assembly includes a first torsion spring, a first clamp, a second clamp, a second stud and a fourth socket. A first torsion spring is provided at the connection between the first clamp and the second clamp, one end of the first torsion spring is fixed to the first clamp, the other end of the first torsion spring is fixed to the second clamp, the second stud is fixed to the first clamp, the second stud is inserted into the adjustment hole, a fourth socket is provided on the first clamp, and the first stud is inserted into the fourth socket.

[0014] Furthermore, the clamping assembly also includes a third clamp, a fourth clamp, a second torsion spring, a third stud and a fifth socket. A second torsion spring is provided at the connection between the third clamp and the fourth clamp, one end of the second torsion spring is fixed to the third clamp, the other end of the second torsion spring is fixed to the fourth clamp, the third stud is fixed to the third clamp, the third stud is inserted into the adjustment hole, a fifth socket is provided on the third clamp, and the first stud is inserted into the fifth socket.

[0015] Furthermore, it also includes an upper mouth, an upper mouth hole, a lower mouth and a lower mouth stud. The upper mouth is arranged at the end of the third clamp, an upper mouth hole is opened in the center of the upper mouth, the lower mouth is arranged at the end of the fourth clamp, a lower mouth stud is welded in the center of the lower mouth, and the lower mouth stud is inserted in the upper mouth hole.

[0016] The present invention has the following advantages: first, the clamping device allows the curtain to be used without large swinging when the window is open, so that it can achieve the effect of both sunshade and ventilation; second, Fig.16As shown, when the curtain is put away or when it is not necessary to fix the curtain, the multiple clamping components can be removed and used in combination with the fixing platform component, the Z-shaped clamp body, the screw and the first stud to be used as a clothes hanger or a clothes drying rack; thirdly, the "Z" shape formed by the clamping components arranged at the left and right ends of the Z-shaped clamp body and the Z-shaped clamp body makes it possible to reduce the swing of the curtain and the influence of the curtain on the indoor air circulation when the device is installed on the curtain, thereby ensuring that the curtain has a good ventilation effect and a good sunshade effect; thirdly, the size of the vent of the clamping device can be adjusted according to needs by setting the adjustment holes on the adjustment plate; fourthly, the structure of the fixing platform component can be used for curtains without a window sill, and the first fixing plate and The setting of the first fixing hole makes the device more stable; the setting of the first screw groove makes the screw of the device firmly fixed on the fixing platform assembly; fifth, the structure of the fixing platform assembly can be applied to curtains with windowsills, and the setting of the second fixing plate makes the device more stable; the setting of the first screw groove makes the screw of the device firmly fixed on the fixing platform assembly; sixth, the setting of the first torsion spring, the first clamp, the second clamp and the second stud makes the clamping device applicable to ordinary curtains; seventh, the structure of the clamping assembly formed by the combination of the third clamp, the fourth clamp, the second torsion spring and the third stud can be applied to special curtains, wherein the edge of the special curtain has small holes, and the upper mouth, the lower mouth and the small holes on the edge of the curtain can be used together to firmly fix the clamping device on the special curtain. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0018] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0019] Figure 1 A partial structural schematic diagram of a clamping device provided in some embodiments of the present invention.

[0020] Figure 2 A partial structural schematic diagram of a clamping device provided in some embodiments of the present invention.

[0021] Figure 3 A schematic structural diagram of a mounting clamp of a clamping device provided in some embodiments of the present invention.

[0022] Figure 4 A top view of the structure of a Z-shaped clamp body of a clamping device provided in some embodiments of the present invention.

[0023] Figure 5 A front view of a Z-shaped clamp body of a clamping device provided in some embodiments of the present invention.

[0024] Figure 6 A front view of a clamp of a clamping device provided in some embodiments of the present invention.

[0025] Figure 7 A top view of a clamp of a clamping device provided in some embodiments of the present invention.

[0026] Figure 8 A three-dimensional diagram of a clamp of a clamping device provided in some embodiments of the present invention.

[0027] Fig. 9 A three-dimensional diagram of a clamp of a clamping device provided in some embodiments of the present invention.

[0028] Fig.10 A front view of a clamp of a clamping device provided in some embodiments of the present invention.

[0029] Fig.11 A top view of a clamp of a clamping device provided in some embodiments of the present invention.

[0030] Fig.12 A schematic diagram of the lower nozzle structure of a clamping device provided in some embodiments of the present invention.

[0031] Fig.13 A schematic diagram of the upper nozzle structure of a clamping device provided in some embodiments of the present invention.

[0032] Fig.14 A schematic structural diagram of a fixing table assembly of a clamping device provided in some embodiments of the present invention.

[0033] Fig.15 A schematic structural diagram of a fixing table assembly of a clamping device provided in some embodiments of the present invention.

[0034] Fig.16 An assembly diagram of a clamping device provided for some embodiments of the present invention.

[0035] Fig.17 A schematic diagram of a clamping device provided in some embodiments of the present invention being installed on a curtain.

[0036] Fig.18 A schematic diagram of a clamping device provided in some embodiments of the present invention being installed on a curtain.

[0037] In the figure: 1, Z-shaped clamp body, 2, clamping assembly, 4, first jack, 6, sleeve, 7, clamp body, 8, first stud, 10, screw, 11, adjustment plate, 12, adjustment hole, 13, first torsion spring, 14, first clamp, 15, second clamp, 16, second stud, 17, third clamp, 18, fourth clamp, 19, lower mouth stud, 20, second torsion spring, 21, third stud, 22, upper mouth, 23, lower mouth, 24, upper mouth hole, 25, first fixing plate, 26, first fixing hole, 27, first fixing rod, 28, first screw groove, 29, second jack, 30, second fixing plate, 31, second fixing rod, 32, second screw groove, 33, third jack, 34, fourth jack, 35, fifth jack. DETAILED DESCRIPTION

[0038] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] Example 1

[0040] like Figures 1 to 18 As shown, a clamping device in this embodiment includes a Z-shaped clamp body 1, a sleeve 6, a first stud 8, a screw 10, a clamping assembly 2 and a fixed platform assembly, a first stud 8 is fixed to the left and right ends of the Z-shaped clamp body 1, multiple Z-shaped clamp bodies 1 are sleeved on the screw 10, at least one sleeve 6 is sleeved on the screw 10, a Z-shaped clamp body 1 is fixed to the upper end and the lower end of the sleeve 6, the screw 10 is inserted on the fixed platform assembly, a clamping assembly 2 is provided at the left and right ends of the Z-shaped clamp body 1, and the clamping assembly 2 is rotatably connected to the Z-shaped clamp body 1 through the first stud 8.

[0041] Among them, the shape formed by the clamping components 2 arranged at the left and right ends of the Z-shaped clamp body 1 and the Z-shaped clamp body 1 is a "Z" shape; a nut is installed above the top Z-shaped clamp body 1, and a nut is installed below the bottom Z-shaped clamp body 1. Multiple Z-shaped clamp bodies 1 are fixed by the setting of nuts and at least one sleeve 6.

[0042] The technical effects achieved by this embodiment are: first, the clamping device allows the curtain to be used without large swinging when the window is open, so that it can achieve the effect of both sunshade and ventilation; second, Fig.16 As shown, when the curtain is folded or does not need to be fixed, the multiple clamping components 2 can be removed and used in conjunction with the fixing platform component, the Z-shaped clamp body 1, the screw 10 and the first stud 8 to be used as a clothes hanger or a clothes drying rack; thirdly, the "Z" shape formed by the clamping components 2 arranged at the left and right ends of the Z-shaped clamp body 1 and the Z-shaped clamp body 1 makes it possible to reduce the swing of the curtain when the device is installed on the curtain, and also reduce the influence of the curtain on the indoor air circulation, thereby ensuring that the curtain has a good ventilation effect while ensuring that the curtain has a good sunshade effect.

[0043] Example 2

[0044] like Figures 1 to 5 As shown, a clamping device in this embodiment includes all the technical features of Example 1. In addition, a Z-shaped clamp body 1 includes a clamp body 7 and an adjusting plate 11. An adjusting plate 11 is respectively provided at the left and right ends of the clamp body 7. A first stud 8 is welded at the center position of the adjusting plate 11. A clamp body 7 is respectively fixed at the upper and lower ends of the sleeve 6. The clamping assembly 2 is rotatably connected to the adjusting plate 11. The adjusting plate 11 is rotatably connected to the clamping assembly 2 through the first stud 8. The screw 10 passes through the clamp body 7 and is detachably connected to the fixed platform assembly.

[0045] Preferably, the Z-shaped clamp body 1 further comprises an adjustment hole 12 , a plurality of adjustment holes 12 are provided on the adjustment plate 11 , and the plurality of adjustment holes 12 are evenly distributed around the first stud 8 , and the clamping assembly 2 is detachably connected to the adjustment hole 12 .

[0046] Preferably, the Z-shaped clamp body 1 further comprises a screw insertion hole 3. A screw insertion hole 3 is provided at the center of the Z-shaped clamp body 1. The screw 10 passes through the screw insertion hole 3 and is detachably connected to the fixing platform assembly.

[0047] Preferably, it also includes a first plug hole 4 , the lower end of the screw rod 10 is provided with the first plug hole 4 , and the screw rod 10 is bolted to the fixing platform assembly through the first plug hole 4 .

[0048] The beneficial effect of this embodiment is that the size of the ventilation opening of the clamping device can be adjusted according to demand by setting the adjustment hole 12 on the adjustment plate 11.

[0049] Example 3

[0050] like Fig.14As shown, a clamping device in this embodiment includes all the technical features of Example 1. In addition, the fixed platform assembly includes a first fixed plate 25, a first fixed hole 26, a first fixed rod 27, a first screw groove 28 and a second plug hole 29. The screw 10 is inserted into the first screw groove 28 and is detachably connected to the first screw groove 28. The first screw groove 28 is provided with a second plug hole 29. The first plug hole 4 is connected to the second plug hole 29 by bolts. The first screw groove 28 is fixed to the upper end of the first fixed rod 27, and the first fixed plate 25 is fixed to the lower end of the first fixed rod 27. The first fixed plate 25 is provided with at least one first fixing hole 26.

[0051] The beneficial effects of this embodiment are as follows: the structure of the fixing platform assembly can be used for curtains without a window sill, the arrangement of the first fixing plate 25 and the first fixing hole 26 makes the device more stable; the arrangement of the first screw groove 28 makes the screw 10 of the device firmly fixed on the fixing platform assembly.

[0052] Example 4

[0053] like Fig.15 As shown, a clamping device in this embodiment includes all the technical features of Example 1. In addition, the fixed platform assembly includes a second fixed plate 30, a second fixed rod 31, a second screw groove 32 and a third socket 33. The second fixed rod 31 has a second screw groove 32 installed on the upper end, the second fixed rod 31 has a second fixed plate 30 installed on the lower end, the second screw groove 32 has a third socket 33, the screw 10 is inserted into the second screw groove 32 and is detachably connected to the second screw groove 32, and the first socket 4 is connected to the third socket 33 by bolts.

[0054] The beneficial effects of this embodiment are as follows: the structure of the fixing platform assembly can be applied to curtains with windowsills, the provision of the second fixing plate 30 makes the device more stable; the provision of the first screw groove 28 enables the screw 10 of the device to be firmly fixed on the fixing platform assembly.

[0055] Example 5

[0056] like Figures 3 to 8 As shown, a clamping device in this embodiment includes all the technical features of Example 1. In addition, the clamping assembly 2 includes a first torsion spring 13, a first clamp 14, a second clamp 15, a second stud 16 and a fourth socket 34. The first torsion spring 13 is provided at the connection between the first clamp 14 and the second clamp 15. One end of the first torsion spring 13 is fixed to the first clamp 14, and the other end of the first torsion spring 13 is fixed to the second clamp 15. The second stud 16 is fixed to the first clamp 14, and the second stud 16 is inserted into the adjustment hole 12. The first clamp 14 is provided with a fourth socket 34, and the first stud 8 is inserted into the fourth socket 34.

[0057] According to some specific implementations of this embodiment: when the clamping assembly 2 is used in conjunction with the first clamp 14, the second clamp 15 and the first torsion spring 13, after clamping the curtain, the first stud 8 is inserted into the fourth hole 34 and then tightened with a nut.

[0058] The beneficial effects of this embodiment are as follows: the arrangement of the first torsion spring 13, the first clamp 14, the second clamp 15 and the second stud 16 enables the clamping device to be applied to ordinary curtains.

[0059] Example 6

[0060] like Figure 3 and Figures 9 to 13 As shown, a clamping device in this embodiment includes all the technical features of Example 1. In addition, the clamping assembly 2 also includes a third clamp 17, a fourth clamp 18, a second torsion spring 20, a third stud 21 and a fifth socket 35. A second torsion spring 20 is provided at the connection between the third clamp 17 and the fourth clamp 18, one end of the second torsion spring 20 is fixed to the third clamp 17, the other end of the second torsion spring 20 is fixed to the fourth clamp 18, the third stud 21 is fixed to the third clamp 17, the third stud 21 is inserted into the adjustment hole 12, the third clamp 17 is provided with a fifth socket 35, and the first stud 8 is inserted into the fifth socket 35.

[0061] Preferably, it also includes an upper nozzle 22, an upper nozzle hole 24, a lower nozzle 23 and a lower nozzle stud 19, the upper nozzle 22 is arranged at the end of the third clamp 17, an upper nozzle hole 24 is opened in the center of the upper nozzle 22, the lower nozzle 23 is arranged at the end of the fourth clamp 18, a lower nozzle stud 19 is welded at the center of the lower nozzle 23, and the lower nozzle stud 19 is inserted in the upper nozzle hole 24.

[0062] The beneficial effects of this embodiment are as follows: the structure of the clamping assembly 2 formed by the third clamp 17, the fourth clamp 18, the second torsion spring 20 and the third stud 21 can be applied to special curtains, wherein the edges of the special curtains have small holes, and the upper mouth 22, the lower mouth 23 and the small holes on the edges of the curtains are used in combination to greatly reduce the swing of the special curtains by the clamping device.

[0063] Although the present invention has been described in detail above by general description and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.

[0064] The terms such as "upper", "lower", "left", "right", "middle", etc. cited in this specification are only for the convenience of description and are not intended to limit the scope of implementation of the present invention. Changes or adjustments to their relative relationships should be regarded as within the scope of implementation of the present invention without substantially changing the technical content.

Claims

1. A clamping device, characterized in that: The invention comprises a Z-shaped clamp body (1), a sleeve (6), a first stud (8), a screw (10), a clamping assembly (2) and a fixing platform assembly, wherein the left and right ends of the Z-shaped clamp body (1) are respectively fixed with a first stud (8), a plurality of the Z-shaped clamp bodies (1) are sleeved on the screw (10), at least one sleeve (6) is sleeved on the screw (10), the upper end and the lower end of the sleeve (6) are respectively fixed with a Z-shaped clamp body (1), the screw (10) is inserted into the fixing platform assembly, the left and right ends of the Z-shaped clamp body (1) are respectively provided with a clamping assembly (2), and the clamping assembly (2) is rotatably connected to the Z-shaped clamp body (1) via the first stud (8); The Z-shaped clamp body (1) comprises a clamp body (7) and an adjustment plate (11), wherein the adjustment plate (11) is respectively arranged at the left and right ends of the clamp body (7), the first stud (8) is welded at the center of the adjustment plate (11), the clamp body (7) is respectively fixed at the upper end and the lower end of the sleeve (6), the clamping assembly (2) is rotatably connected to the adjustment plate (11), the adjustment plate (11) is rotatably connected to the clamping assembly (2) via the first stud (8), and the screw rod (10) passes through the clamp body (7) and is detachably connected to the fixing platform assembly; A first insertion hole (4) is formed at the lower end of the screw rod (10), and the screw rod (10) is bolted to the fixing platform assembly via the first insertion hole (4).

2. A clamping device according to claim 1, characterized in that: The Z-shaped clamp body (1) further comprises an adjustment hole (12), a plurality of the adjustment holes (12) are provided on the adjustment plate (11), the plurality of the adjustment holes (12) are evenly distributed around the first stud (8), and the clamping assembly (2) is detachably connected to the adjustment hole (12).

3. A clamping device according to claim 1, characterized in that: The Z-shaped clamp body (1) further comprises a screw insertion hole (3). The center of the Z-shaped clamp body (1) is provided with the screw insertion hole (3). The screw (10) passes through the screw insertion hole (3) and is detachably connected to the fixing platform assembly.

4. A clamping device according to claim 1, characterized in that: The fixing platform assembly comprises a first fixing plate (25), a first fixing hole (26), a first fixing rod (27), a first screw groove (28) and a second insertion hole (29); the screw rod (10) is inserted into the first screw groove (28) and is detachably connected to the first screw groove (28); the first screw groove (28) is provided with the second insertion hole (29); the first insertion hole (4) and the second insertion hole (29) are connected by bolts; the first screw groove (28) is fixed to the upper end of the first fixing rod (27); the first fixing plate (25) is fixed to the lower end of the first fixing rod (27); and the first fixing plate (25) is provided with at least one first fixing hole (26).

5. A clamping device according to claim 1, characterized in that: The fixing platform assembly comprises a second fixing plate (30), a second fixing rod (31), a second screw groove (32) and a third insertion hole (33); the second fixing rod (31) is provided with the second screw groove (32) at the upper end thereof, the second fixing plate (30) is provided with the second screw groove (32) at the lower end thereof, the second screw groove (32) is provided with the third insertion hole (33), the screw rod (10) is inserted into the second screw groove (32) and is detachably connected to the second screw groove (32), and the first insertion hole (4) is connected to the third insertion hole (33) by means of bolts.

6. A clamping device according to claim 2, characterized in that: The clamping assembly (2) comprises a first torsion spring (13), a first clamp (14), a second clamp (15), a second stud (16) and a fourth insertion hole (34); the first torsion spring (13) is arranged at the connection between the first clamp (14) and the second clamp (15); one end of the first torsion spring (13) is fixed to the first clamp (14); the other end of the first torsion spring (13) is fixed to the second clamp (15); the second stud (16) is fixed to the first clamp (14); the second stud (16) is inserted into the adjustment hole (12); the first clamp (14) is provided with the fourth insertion hole (34); the first stud (8) is inserted into the fourth insertion hole (34).

7. A clamping device according to claim 2, characterized in that: The clamping assembly (2) further comprises a third clamp (17), a fourth clamp (18), a second torsion spring (20), a third stud (21) and a fifth insertion hole (35); the second torsion spring (20) is provided at the connection between the third clamp (17) and the fourth clamp (18); one end of the second torsion spring (20) is fixed to the third clamp (17); the other end of the second torsion spring (20) is fixed to the fourth clamp (18); the third stud (21) is fixed to the third clamp (17); the third stud (21) is inserted into the adjustment hole (12); the third clamp (17) is provided with the fifth insertion hole (35); the first stud (8) is inserted into the fifth insertion hole (35).

8. A clamping device according to claim 7, characterized in that: It also includes an upper nozzle (22), an upper nozzle hole (24), a lower nozzle (23) and a lower nozzle stud (19), wherein the upper nozzle (22) is arranged at the end of the third clamp (17), the upper nozzle hole (24) is opened at the center of the upper nozzle (22), the lower nozzle (23) is arranged at the end of the fourth clamp (18), the lower nozzle stud (19) is welded at the center of the lower nozzle (23), and the lower nozzle stud (19) is inserted into the upper nozzle hole (24).

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