Portable graphene outdoor heating tent

Abstract

The invention discloses a portable graphene outdoor heating tent, and belongs to the technical field of tents, the portable graphene outdoor heating tent comprises an inner shed and an outer shed arranged outside the inner shed, supporting rods for supporting the outer shed and the inner shed are arranged outside the outer shed, bottom pins are arranged at the ends of the supporting rods, the supporting rods comprise a plurality of glass fiber rods which are connected end to end, and the glass fiber rods are arranged in the outer shed. The outer shed is composed of first outer shed cloth, second outer shed cloth, third outer shed cloth, fourth outer shed cloth, fifth outer shed cloth and sixth outer shed cloth, a first outer sealing curtain is arranged on the edge, back to the second outer shed cloth, of the first outer shed cloth, and a second outer sealing curtain is arranged on the edge, back to the fifth outer shed cloth, of the sixth outer shed cloth. A first outer air window is arranged between the first outer shed cloth and the second outer shed cloth, a second outer air window is arranged at the junction of the fifth outer shed cloth and the sixth outer shed cloth, the lower side of the inner shed comprises inner bottom shed cloth, inner lower shed cloth, inner second lower shed cloth, inner third lower shed cloth and inner fourth lower shed cloth, and the portable graphene outdoor heating tent is beneficial to arrangement and has good heat preservation capacity.

Description

Technical Field

[0001] The invention belongs to the technical field of tents, and in particular relates to a portable graphene outdoor heating tent. Background Art

[0002] A tent is a shed propped up on the ground to provide shelter from wind, rain, and sunlight and for temporary living. Most tents are made of canvas, and the tent components are also combined with supporting objects, such as rod-shaped components that can be removed and transferred at any time. In most cases, the tent is carried in the form of components and is assembled only after the carrying channel arrives at the site. The assembly of the tent requires various parts and tools. Only by fully understanding the names and uses of the various parts of the tent and being familiar with the structure of the tent can the tent be set up quickly and conveniently.

[0003] Existing tents have a technical problem of poor thermal insulation performance due to their single-layer structure, and each support pole is stored in sections when folded, so there is a possibility of loss of the support pole during carrying. The contact parts of the support poles of existing tents with the ground mostly use sleeved protective tubes, and the strength of the connection is relatively general. Summary of the invention

[0004] The purpose of the present invention is to provide a portable graphene outdoor heating tent to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a portable graphene outdoor heating tent, comprising an inner tent and an outer tent arranged outside the inner tent, the outer tent is provided with a support rod for supporting the outer tent and the inner tent, the end of the support rod is provided with a bottom pin, the support rod comprises a plurality of fiberglass rods connected end to end, the fiberglass rods are connected to each other through a sleeve, the outer tent is composed of an outer tent cloth No. 1, an outer tent cloth No. 2, an outer tent cloth No. 3, an outer tent cloth No. 4, an outer tent cloth No. 5 and an outer tent cloth No. 6, the outer tent cloth No. 1 is provided with a first outer sealing curtain at the edge of the outer tent cloth facing away from the outer tent cloth No. 2, the outer tent cloth No. 6 faces the outer tent cloth No. 5 A second outer sealing curtain is provided at the edge of the shed cloth, a first outer air window is provided between the outer first shed cloth and the outer second shed cloth, a second outer air window is provided at the junction of the outer fifth shed cloth and the outer sixth shed cloth, the lower side of the inner shed includes an inner bottom shed cloth, an inner lower shed cloth, an inner second lower shed cloth, an inner third lower shed cloth and an inner fourth lower shed cloth, the upper side of the inner shed is provided with an inner first shed cloth, an inner second shed cloth, an inner third shed cloth, an inner fourth shed cloth and an inner sealing curtain, the bottom pin includes a tensioning screw and a pin body, and the inner bottom shed cloth is composed of a direct contact layer, a heat storage layer, a first graphene thermal conductive layer, an electric heating layer, a second graphene thermal conductive layer and a grounding layer.

[0006] Preferably, elastic ribs are provided inside the fiberglass rod, wall windows are provided on the outer walls of the ends of the fiberglass rod, a tube cavity is provided in the middle of the sleeve, and tube end cavities are provided inside both ends of the sleeve.

[0007] Preferably, the outer contours of the glass fiber rod and the sleeve are both shuttle-shaped, the end of the glass fiber rod is inserted into the tube end cavity of the sleeve end, and the elastic rib is located in the internal space of the glass fiber rod and the tube cavity.

[0008] Preferably, the junction of the outer first awning cloth and the outer second awning cloth is sewn together, the junction of the outer second awning cloth and the outer third awning cloth is sewn together, the junction of the outer third awning cloth and the outer fourth awning cloth is sewn together, the junction of the outer fourth awning cloth and the outer fifth awning cloth is sewn together, and the junction of the outer fifth awning cloth and the outer sixth awning cloth is sewn together.

[0009] Preferably, the first external air window is located on the upper side of the joining part of the first outer shed cloth and the second outer shed cloth, the second external air window is located on the upper side of the joining part of the fifth outer shed cloth and the sixth outer shed cloth, the first external sealing curtain is sewn to the first outer shed cloth, the second external sealing curtain is sewn to the sixth outer shed cloth, and the adjacent edges of the first external sealing curtain and the second external sealing curtain are connected by a zipper.

[0010] Preferably, the four edges of the inner bottom shed cloth are respectively sewn and connected with the inner lower shed cloth, the inner second lower shed cloth, the inner third lower shed cloth and the inner fourth lower shed cloth, the side edges of the inner lower shed cloth are respectively sewn and connected with the side edges of the inner second lower shed cloth and the inner fourth lower shed cloth, and the side edges of the inner third lower shed cloth are also sewn and connected with the side edges of the inner second lower shed cloth and the inner fourth lower shed cloth.

[0011] Preferably, the upper edge of the second inner lower shed cloth is sewn to the first inner shed cloth, the upper edge of the third inner lower shed cloth is sewn to the second inner shed cloth and the third inner shed cloth, and the upper edge of the fourth inner lower shed cloth is sewn to the fourth inner shed cloth.

[0012] Preferably, the first inner shed cloth is sewn together with the second inner shed cloth, the second inner shed cloth is sewn together with the third inner shed cloth, the third inner shed cloth is sewn together with the fourth inner shed cloth, the fourth inner shed cloth is sewn together with the inner sealing curtain, and the side of the inner sealing curtain away from the fourth inner shed cloth is connected to the side of the first inner shed cloth by a zipper.

[0013] Preferably, a rope hanging ring is provided on the outer circle of the upper side of the pin body, a rod accommodating cavity is opened inside the upper side of the pin body, an inner expansion column is provided inside the rod accommodating cavity, an inner thread channel is opened inside the inner expansion column, a deformation groove is opened on the side wall of the inner expansion column, the end of the fiberglass rod is located inside the rod accommodating cavity, the inner expansion column is located inside the end of the fiberglass rod, and the tensioning screw is located inside the inner thread channel.

[0014] Technical effects and advantages of the present invention: The portable graphene outdoor heating tent isolates cold air through the compartment between the outer tent composed of the first outer tent cloth, the second outer tent cloth, the third outer tent cloth, the fourth outer tent cloth, the fifth outer tent cloth, the sixth outer tent cloth, the first outer sealing curtain and the second outer sealing curtain, and the inner tent composed of the first inner tent cloth, the second inner tent cloth, the third inner tent cloth, the fourth inner tent cloth and the inner sealing curtain. This feature can prevent the external cold air from directly contacting the first inner tent cloth, the second inner tent cloth, the third inner tent cloth and the fourth inner tent cloth of the inner tent, and this feature can relatively well maintain the temperature of the inner space of the inner tent. The fiberglass rod is connected by a sleeve, and the elastic ribs built into the fiberglass rod can prevent the fiberglass rod from falling out of the storage bag when the fiberglass rod is in a disassembled state, thereby avoiding the phenomenon of the fiberglass rod being lost. The end of the fiberglass rod is inserted into the inside of the pin body and locked by tightening the tensioning screw. The pin body is sleeved on the outside of the fiberglass rod and embedded in the inside of the fiberglass rod through the internal expansion column, which can better protect the end of the fiberglass rod. The solution of connecting the fiberglass rod and the pin body by tightening the tensioning screw has high structural reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of a combined state structure of an embodiment of the present invention; Figure 2 A schematic diagram of the support rod structure of an embodiment of the present invention; Figure 3 This is a schematic diagram of the outer shed structure of an embodiment of the present invention; Figure 4 This is a schematic diagram of the inner shed structure of an embodiment of the present invention; Figure 5 This is a schematic structural diagram of a cutaway state of a connection between a glass fiber rod and a sleeve according to an embodiment of the present invention; Figure 6 This is a schematic structural diagram of a casing in a cut-away state according to an embodiment of the present invention; Figure 7 This is a schematic structural diagram of a cutaway state of an inner bottom shed cloth according to an embodiment of the present invention; Figure 8 This is a structural schematic diagram of the connection state of the glass fiber rod and the bottom pin according to an embodiment of the present invention; Fig. 9 This is a schematic diagram of the structure of the bottom pin in a disassembled state according to an embodiment of the present invention; Fig.10 Schematic diagram of the internal structure of the pin body according to an embodiment of the present invention.

[0016] In the figure: 100, support rod; 1, fiberglass rod; 101, elastic rib; 102, wall window; 2, sleeve; 201, tube end cavity; 202, tube middle cavity; 200, outer shed; 3, outer shed cloth one; 4, outer shed cloth two; 5, outer shed cloth three; 6, outer shed cloth four; 7, outer shed cloth five; 8, outer shed cloth six; 9, first outer air window; 10, second outer air window; 11, first outer sealing curtain; 12, second outer sealing curtain; 300, inner shed; 13, inner bottom shed cloth; 1301, direct contact layer; 1302, heat storage layer; 1303, first graphene Thermal conductive layer; 1304, electric heating layer; 1305, second graphene thermal conductive layer; 1306, grounding layer; 14, inner lower shed cloth; 15, inner second lower shed cloth; 16, inner third lower shed cloth; 17, inner fourth lower shed cloth; 18, inner first shed cloth; 19, inner second shed cloth; 20, inner third shed cloth; 21, inner fourth shed cloth; 22, inner sealing curtain; 400, bottom pin; 23, tensioning screw; 24, pin body; 2401, rope hanging ring; 2402, rod cavity; 2403, inner expansion column; 2404, inner threaded channel; 2405, deformation groove. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0018] Please refer to Figure 1-Figure 10 A portable graphene outdoor heating tent is shown, comprising an inner canopy 300 and an outer canopy 200 arranged outside the inner canopy 300, wherein a support rod 100 is arranged outside the outer canopy 200 to support the outer canopy 200 and the inner canopy 300, and a bottom pin 400 is arranged at the end of the support rod 100, and the support rod 100 comprises a plurality of glass fiber rods 1 connected end to end, and the glass fiber rods 1 can be replaced with carbon fiber rods with toughness as needed, and the glass fiber rods 1 are connected to each other through sleeves 2, and the sleeves 2 are made of aluminum alloy, and elastic tendons 101 are arranged inside the glass fiber rods 1, and the elastic tendons 101 are made of rubber; The elastic tendon 101 can also be a solution of a tension spring with a PE rope. A wall window 102 is also provided on the outer wall of the end of the fiberglass rod 1. The wall window 102 is convenient for the use of a wrench. A tube cavity 202 is provided in the middle of the sleeve 2. Tube end cavities 201 are provided inside both ends of the sleeve 2. The diameter of the tube cavity 202 corresponds to the elastic tendon 101. The tube end cavity 201 corresponds to the diameter of the end of the fiberglass rod 1. The outer contours of the fiberglass rod 1 and the sleeve 2 are both shuttle-shaped. The shuttle-shaped structure can reduce the possibility of the fiberglass rod 1 breaking from the middle. The end of the fiberglass rod 1 is inserted into the tube end cavity 201 at the end of the sleeve 2. The elastic tendon 101 is located in the internal space of the fiberglass rod 1 and inside the tube cavity 202. The fiberglass rod 1 lifts the outer shed 200 by rope lifting, and the outer shed 200 lifts the inner shed 300 inside it by rope.

[0019] refer to Figure 2 , Figure 5 and Figure 6 The outer shed 200 is composed of an outer first shed cloth 3, an outer second shed cloth 4, an outer third shed cloth 5, an outer fourth shed cloth 6, an outer fifth shed cloth 7 and an outer sixth shed cloth 8. The outer first shed cloth 3, the outer second shed cloth 4, the outer third shed cloth 5, the outer fourth shed cloth 6, the outer fifth shed cloth 7 and the outer sixth shed cloth 8 are made of PE cloth. The edge of the outer first shed cloth 3 facing away from the outer second shed cloth 4 is provided with a first outer sealing curtain 11. The edge of the outer sixth shed cloth 8 facing away from the outer fifth shed cloth 7 is provided with a second outer sealing curtain 12. A first outer air window 9 is provided between the outer first shed cloth 3 and the outer second shed cloth 4. The outer first shed cloth 3 and the outer second shed cloth 4 are sewn together at their junction. The junction of the outer second awning cloth 4 and the outer third awning cloth 5 is sewn together, the junction of the outer third awning cloth 5 and the outer fourth awning cloth 6 is sewn together, the junction of the outer fourth awning cloth 6 and the outer fifth awning cloth 7 is sewn together, the junction of the outer fifth awning cloth 7 and the outer sixth awning cloth 8 is sewn together, and a second outer air window 10 is provided at the junction of the outer fifth awning cloth 7 and the outer sixth awning cloth 8, the first outer air window 9 is located on the upper side of the junction of the outer first awning cloth 3 and the outer second awning cloth 4, the second outer air window 10 is located on the upper side of the junction of the outer fifth awning cloth 7 and the outer sixth awning cloth 8, the first outer sealing curtain 11 is sewn together with the outer first awning cloth 3, the second outer sealing curtain 12 is sewn together with the outer sixth awning cloth 8, and the adjacent edges of the first outer sealing curtain 11 and the second outer sealing curtain 12 are connected by a zipper.

[0020] refer to Figure 4 and Figure 7The lower side of the inner shed 300 includes an inner bottom shed cloth 13, an inner lower shed cloth 14, an inner second lower shed cloth 15, an inner third lower shed cloth 16 and an inner fourth lower shed cloth 17. The inner bottom shed cloth 13, the inner lower shed cloth 14, the inner second lower shed cloth 15, the inner third lower shed cloth 16 and the inner fourth lower shed cloth 17 are made of PE cloth. The four edges of the inner bottom shed cloth 13 are respectively sewed and connected with the inner lower shed cloth 14, the inner second lower shed cloth 15, the inner third lower shed cloth 16 and the inner fourth lower shed cloth 17. The inner bottom shed cloth 13 is composed of a direct contact layer 1301, a heat storage layer 1302, a first graphene heat conductive layer 1303, an electric heating layer 1304, a second graphene heat conductive layer 1305 and a grounding layer 1306. The first graphene heat conductive layer 1303 and the second graphene heat conductive layer 1305 are directly in contact with the electric heating layer 1304 to achieve a higher heat conduction efficiency. The grounding layer 1306 has a high structural strength. The heat storage layer 1302 is used to absorb the heat emitted by the electric heating layer 1304. The upper edge of the inner second lower shed cloth 15 is sewn and connected to the inner first shed cloth 18. The upper edge of the inner third lower shed cloth 16 is sewn and connected to the inner second shed cloth 19 and the inner third shed cloth 20. The upper edge of the inner fourth lower shed cloth 17 is sewn and connected to the inner fourth shed cloth 21. The inner first shed cloth 18 is sewn and connected to the inner second shed cloth 19 at the junction. The inner second shed cloth 19 is sewn and connected to the inner third shed cloth 20 at the junction. The inner third shed cloth 20 is sewn and connected to the inner fourth shed cloth 21. The joint of the inner four shed cloths 21 is sewn together with the inner sealing curtain 22, and the side of the inner sealing curtain 22 away from the inner four shed cloths 21 is connected to the side of the inner first shed cloth 18 through a zipper, and the side edges of the inner lower shed cloth 14 are sewn together with the side edges of the inner second lower shed cloth 15 and the inner fourth lower shed cloth 17 respectively, and the side edges of the inner third lower shed cloth 16 are also sewn together with the side edges of the inner second lower shed cloth 15 and the inner fourth lower shed cloth 17. The upper side of the inner shed 300 is provided with the inner first shed cloth 18, the inner second shed cloth 19, the inner third shed cloth 20, the inner fourth shed cloth 21 and the inner sealing curtain 22.

[0021] refer to Figure 8 , Fig. 9 and Fig.10 The bottom pin 400 includes a tensioning screw 23 and a pin body 24. A rope hanging ring 2401 is provided on the outer circle of the upper side of the pin body 24. A rod cavity 2402 is provided inside the upper side of the pin body 24. An internal expansion column 2403 is provided inside the rod cavity 2402. An internal thread 2404 is provided inside the internal expansion column 2403. A deformation groove 2405 is provided on the side wall of the internal expansion column 2403. The end of the glass fiber rod 1 is located inside the rod cavity 2402, the internal expansion column 2403 is located inside the end of the glass fiber rod 1, and the tensioning screw 23 is located inside the internal thread 2404.

[0022] The portable graphene outdoor heating tent is installed by inserting the end of the glass fiber rod 1 into the tube end cavity 201 inside the sleeve 2. At this time, the elastic tendon 101 inside the glass fiber rod 1 will be located inside the tube middle cavity 202. The outer first shed cloth 3, the outer second shed cloth 4, the outer third shed cloth 5, the outer fourth shed cloth 6, the outer fifth shed cloth 7, the outer sixth shed cloth 8, the first outer sealing curtain 11 and the second outer sealing curtain 12 are used to withstand the adverse effects of the external environment. The inner first shed cloth 18, the inner second shed cloth 19, the inner third shed cloth 20, the inner fourth shed cloth 21 and the inner sealing curtain 22 are used to store the temperature inside the inner shed 300. When the glass fiber rod 1 and the sleeve 2 of the support rod 100 are plugged and connected to each other, the outer shed 200 and the inner shed 300 will be propped up by ropes, thereby realizing the construction of the tent, and the auxiliary ropes and rope hanging rings 2401 can also be used to assist in fixing; When the electric heating layer 1304 is heated, the temperature of the first graphene thermal conductive layer 1303 and the second graphene thermal conductive layer 1305 on the outside thereof will be increased. The increased temperature of the electric heating layer 1304 is stored in the heat storage layer 1302. The direct contact layer 1301 is made of velvet cloth, which can give the user a good touch.

[0023] The above description is only a preferred specific implementation manner of the invention, but the protection scope of the invention is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the invention according to the technical scheme and inventive concept of the invention, which should be covered by the protection scope of the invention.

Claims

1. A portable graphene outdoor heating tent, comprising an inner tent (300) and an outer tent (200) arranged outside the inner tent, characterized in that: The outer shed (200) is provided with a support rod (100) on the outside for supporting the outer shed (200) and the inner shed (300). The end of the support rod (100) is provided with a bottom pin (400). The support rod (100) comprises a plurality of fiberglass rods (1) connected end to end. The fiberglass rods (1) are connected to each other via a sleeve (2). The outer shed (200) is composed of an outer first shed cloth (3), an outer second shed cloth (4), an outer third shed cloth (5), an outer fourth shed cloth (6), an outer fifth shed cloth (7) and an outer sixth shed cloth (8). The edge of the outer first shed cloth (3) facing away from the outer second shed cloth (4) is provided with a first outer sealing curtain (11). The edge of the outer sixth shed cloth (8) facing away from the outer fifth shed cloth (7) is provided with a second outer sealing curtain (12). A first outer air window (9) is provided between the outer first shed cloth (3) and the outer second shed cloth (4). A second outer air window (10) is provided at the junction of the outer fifth shed cloth (7) and the outer sixth shed cloth (8); the lower side of the inner shed (300) comprises an inner bottom shed cloth (13), an inner lower shed cloth (14), an inner second lower shed cloth (15), an inner third lower shed cloth (16) and an inner fourth lower shed cloth (17); the upper side of the inner shed (300) comprises an inner first shed cloth (18), an inner second shed cloth (19), an inner third shed cloth (20), an inner fourth shed cloth (21) and an inner sealing curtain (22); the bottom plug pin (400) comprises a tensioning screw (23) and a plug pin body (24); the inner bottom shed cloth (13) comprises a direct contact layer (1301), a heat storage layer (1302), a first graphene heat conductive layer (1303), an electric heating layer (1304), a second graphene heat conductive layer (1305) and a grounding layer (1306).

2. A portable graphene outdoor heating tent according to claim 1, characterized in that: An elastic rib (101) is provided inside the fiberglass rod (1), a wall window (102) is also provided on the outer wall of the end of the fiberglass rod (1), a tube cavity (202) is provided in the middle of the sleeve (2), and tube end cavities (201) are provided inside both ends of the sleeve (2).

3. A portable graphene outdoor heating tent according to claim 2, characterized in that: The outer contours of the glass fiber rod (1) and the sleeve (2) are both shuttle-shaped; the end of the glass fiber rod (1) is inserted into the tube end cavity (201) at the end of the sleeve (2); and the elastic rib (101) is located in the internal space of the glass fiber rod (1) and inside the tube cavity (202).

4. A portable graphene outdoor heating tent according to claim 1, characterized in that: The first outer awning cloth (3) and the second outer awning cloth (4) are sewn together at their junction, the second outer awning cloth (4) and the third outer awning cloth (5) are sewn together at their junction, the third outer awning cloth (5) and the fourth outer awning cloth (6) are sewn together at their junction, the fourth outer awning cloth (6) and the fifth outer awning cloth (7) are sewn together at their junction, and the fifth outer awning cloth (7) and the sixth outer awning cloth (8) are sewn together at their junction.

5. A portable graphene outdoor heating tent according to claim 4, characterized in that: The first outer air window (9) is located on the upper side of the joint portion of the first outer awning cloth (3) and the second outer awning cloth (4), the second outer air window (10) is located on the upper side of the joint portion of the fifth outer awning cloth (7) and the sixth outer awning cloth (8), the first outer sealing curtain (11) and the first outer awning cloth (3) are sewn together, the second outer sealing curtain (12) and the sixth outer awning cloth (8) are sewn together, and the adjacent edges of the first outer sealing curtain (11) and the second outer sealing curtain (12) are connected by a zipper.

6. The portable graphene outdoor heating tent according to claim 1, characterized in that: The four edges of the inner bottom shed cloth (13) are respectively sewn and connected to the inner lower shed cloth (14), the inner second lower shed cloth (15), the inner third lower shed cloth (16) and the inner fourth lower shed cloth (17); the side edges of the inner lower shed cloth (14) are respectively sewn and connected to the side edges of the inner second lower shed cloth (15) and the inner fourth lower shed cloth (17); and the side edges of the inner third lower shed cloth (16) are similarly sewn and connected to the side edges of the inner second lower shed cloth (15) and the inner fourth lower shed cloth (17).

7. A portable graphene outdoor heating tent according to claim 6, characterized in that: The upper edge of the second inner lower shed cloth (15) is sewn to the first inner shed cloth (18), the upper edge of the third inner lower shed cloth (16) is sewn to the second inner shed cloth (19) and the third inner shed cloth (20), and the upper edge of the fourth inner lower shed cloth (17) is sewn to the fourth inner shed cloth (21).

8. A portable graphene outdoor heating tent according to claim 7, characterized in that: The first inner shed cloth (18) and the second inner shed cloth (19) are sewn together at their junction, the second inner shed cloth (19) and the third inner shed cloth (20) are sewn together at their junction, the third inner shed cloth (20) and the fourth inner shed cloth (21) are sewn together at their junction, the fourth inner shed cloth (21) and the inner sealing curtain (22) are sewn together at their junction, and the side of the inner sealing curtain (22) away from the fourth inner shed cloth (21) is connected to the side of the first inner shed cloth (18) via a zipper.

9. The portable graphene outdoor heating tent according to claim 1, characterized in that: A rope hanging ring (2401) is provided on the outer circle of the upper side of the plug body (24); a rod accommodating cavity (2402) is provided inside the upper side of the plug body (24); an inner expansion column (2403) is provided inside the rod accommodating cavity (2402); an inner threaded channel (2404) is provided inside the inner expansion column (2403); a deformation groove (2405) is provided on the side wall of the inner expansion column (2403); the end of the glass fiber rod (1) is located inside the rod accommodating cavity (2402); the inner expansion column (2403) is located inside the end of the glass fiber rod (1); and the tensioning screw (23) is located inside the inner threaded channel (2404).

Images