Portable county-level meteorological emergency communication system support

Abstract

The utility model discloses a portable county-level meteorological emergency communication system support which comprises a first supporting pipe located at the bottom, a supporting base is arranged at the bottom of the first supporting pipe, at least three pull rings are arranged on the upper portion of the first supporting pipe at intervals, the pull rings are connected with ground nails through pull ropes, and the first supporting pipe is connected with a telescopic pipe assembly in a sliding mode. A first positioning structure is arranged between the telescopic pipe assembly and the first supporting pipe, the top of the telescopic pipe assembly is connected with a horizontal base, the horizontal base is hinged to an installation rod of the Beidou terminal equipment through a vertical plate, the vertical plate is provided with an arc groove surrounding the hinged point position, and the installation rod is provided with a locking bolt set adjustably connected with the arc groove. According to the technical scheme, a traditional county-level meteorological emergency communication system support can be replaced, cement foundations do not need to be prefabricated, embedded bolts do not need to be arranged, the support can adapt to various earth surface environments, the support can be rapidly erected and conveniently stored, the installation position can be changed at any time, manpower, material resources and financial resources are saved, and the practical value is good.

Description

Technical Field

[0001] The utility model relates to the technical field of meteorological communication brackets, in particular to a portable county-level meteorological emergency communication system bracket. Background Art

[0002] The county-level meteorological emergency communication system is divided into hardware equipment and software client parts. Traditional hardware equipment such as Figure 1 As shown, it includes Beidou terminal equipment 100, pole 200, cement foundation 300, embedded bolts 400 and other structures. The installation steps are as follows:

[0003] (1) The vertical pole 200 is installed on the embedded bolts 400 and is vertical to the ground as a whole; the mounting plate 110 on the top of the vertical pole 200 is oriented in a north-south direction.

[0004] (2) The mounting pole 110 of the Beidou terminal device 100 is fixed on the mounting plate 500 at the top of the vertical pole 200. The mounting angle of the mounting pole 110 is perpendicular to the ground or within a range of 30° toward the equator.

[0005] (3) The cable connector of the Beidou terminal device 100 passes through the mounting pole 110 and is connected to the bottom of the Beidou terminal device 100 , and the Beidou terminal device 100 is fixed on the mounting pole 110 .

[0006] (4) Lay cables indoors; connect the power cord to the Beidou power adapter (VCC to the red cable of the adapter; GND to the black cable of the adapter); connect the network cable to the network switch (usually the meteorological intranet) in the same network segment as the business machine (the computer where the ISOS software is located).

[0007] (5) After checking that everything is correct, connect the adapter to an AC 220V power source.

[0008] At present, the function of the above-mentioned county-level meteorological emergency communication system is: when the station service dual dedicated lines (telecommunication service dedicated line + mobile service dedicated line) fail, the county-level meteorological emergency communication system will be activated immediately to transmit meteorological data files and emergency information through Beidou satellite. Therefore, the above-mentioned county-level meteorological emergency communication system is an important meteorological emergency communication system for county-level meteorological departments, especially an important network emergency guarantee system for difficult and remote stations.

[0009] However, the installation of the Beidou terminal device 100 requires the construction of a cement foundation 300, and the embedded bolts 400 are pre-placed inside the cement foundation. The size requirements of the cement foundation 300 are: the length, width, and height are not less than 40cm, 30cm, and 30cm respectively. The construction of the cement foundation 300 requires the preparation, transportation, and maintenance of cement mortar in advance. Not only is the construction process more troublesome, but most of the hardship stations are geographically remote and it is inconvenient to obtain materials. If the location is changed later, it will cost more material and financial resources. Utility Model Content

[0010] In view of the deficiencies in the above-mentioned background technology, the utility model proposes a portable county-level meteorological emergency communication system bracket, which solves the technical problem of low installation and turnover efficiency caused by the need for prefabricated cement base for support of the Beidou terminal equipment of the county-level meteorological emergency communication system.

[0011] The technical solution of this application is:

[0012] A portable county-level meteorological emergency communication system bracket includes a first support tube located at the bottom, a support seat is arranged at the bottom of the first support tube, at least three pull rings are arranged at intervals on the upper part, the pull rings are connected to ground nails through pull ropes, the first support tube is slidably connected to a telescopic tube assembly, a first positioning structure is arranged between the telescopic tube assembly and the first support tube, a horizontal seat is connected to the top of the telescopic tube assembly, the horizontal seat is hinged to the mounting rod of a Beidou terminal device through a vertical plate, an arc groove around the hinge point is opened on the vertical plate, and a locking bolt group adjustably connected to the arc groove is arranged on the mounting rod.

[0013] This technical solution can replace the traditional county-level meteorological emergency communication system bracket. It does not require a prefabricated cement foundation or embedded bolts, and it can adapt to various surface environments. It can be quickly erected and conveniently stored. The installation position can also be changed at any time, saving manpower, material and financial resources, and has great practical value. The support seat works together with the pull rope and the ground nail to ensure that the first support tube can be firmly and vertically supported in various surface environments; the telescopic tube assembly and the first support tube are nested and cooperated with each other, which can realize convenient storage and expansion. The first positioning structure can make the telescopic tube assembly firmly supported on the upper end of the first support tube; the horizontal seat provides horizontal support for the vertical plate, and the vertical plate provides support for the Beidou terminal equipment. The hinged structure cooperates with the arc groove and the locking bolt group to conveniently adjust the direction of the Beidou terminal equipment.

[0014] Furthermore, the telescopic tube assembly includes a second support tube slidably connected to the first support tube, and a third support tube slidably connected to the second support tube. The first positioning structure is arranged between the first support tube and the second support tube, and the second positioning structure is arranged between the second support tube and the third support tube.

[0015] On the basis of the above technical solution, this technical solution provides a preferred implementation of a portable county-level meteorological emergency communication system bracket, in which the telescopic tube assembly is arranged as a second support tube and a third support tube that are nested with each other, and the second support tube and the third support tube are positioned by a second positioning structure, and can cooperate with the first support tube to achieve two-stage telescopic expansion, further improving the convenience of storage and transportation. The second positioning structure can be different from the first positioning structure, or it can be the same as the first positioning structure, as long as it can achieve the positioning support function.

[0016] Furthermore, the first positioning structure includes a first limiting groove formed at an upper end portion of the first supporting tube, and a first elastic locking tongue matched with the first limiting groove is provided at a lower end portion of the second supporting tube.

[0017] On the basis of the above technical scheme, the present technical scheme provides an optimal implementation scheme of a portable county-level meteorological emergency communication system bracket, in which the first positioning structure is set to a structural form in which the first elastic locking tongue cooperates with the first limiting groove to stop. In the stored state, the first elastic locking tongue is in a compressed state; in the expanded state, the first elastic locking tongue automatically extends into the first limiting groove to achieve axial stopping; when storage is required, pressing the first elastic locking tongue can make the first elastic locking tongue disengage from the first limiting groove, thereby releasing the axial stopping, and the second support tube can be retracted into the first support tube.

[0018] Furthermore, a first through slot is formed on the side wall of the second support tube, a first elastic portion of the first elastic locking tongue is arranged inside the second support tube, the first elastic portion is connected to a first locking head passing through the first through slot, and the first elastic locking tongue is adapted to the first limiting slot through the first locking head.

[0019] On the basis of the above technical solution, this technical solution provides a preferred implementation of a portable county-level meteorological emergency communication system bracket, in which the first elastic portion of the first elastic locking tongue is arranged inside the second support tube, which can not only protect it, but also reduce the installation space, and then, under the premise of the same overall size, the diameters of the first support tube and the second support tube can be enlarged to make the support effect more stable. In addition, the mutually adapted first elastic locking tongue and the first limiting groove can be arranged in multiple groups, and distributed around the circumference, preferably arranged in two groups.

[0020] Furthermore, the second positioning structure includes a second limiting groove provided at the upper end of the second supporting tube, and the lower end of the third supporting tube is provided with a second elastic locking tongue adapted to the second limiting groove.

[0021] On the basis of the above technical scheme, the present technical scheme provides an optimal implementation scheme of a portable county-level meteorological emergency communication system bracket, in which the second positioning structure is set to a structural form in which the second elastic lock tongue cooperates with the second limit groove to stop. In the stored state, the second elastic lock tongue is in a compressed state; in the expanded state, the second elastic lock tongue automatically extends into the second limit groove to achieve axial stopping; when storage is required, pressing the first elastic lock tongue can make the second elastic lock tongue disengage from the second limit groove, thereby releasing the axial stopping, and the third support tube can be retracted into the second support tube.

[0022] Furthermore, a second through slot is formed on the side wall of the third support tube, a second elastic portion of the second elastic lock tongue is arranged inside the third support tube, the second elastic portion is connected to a second lock head passing through the second through slot, and the second elastic lock tongue is adapted to the second limiting slot through the second lock head.

[0023] On the basis of the above technical solution, this technical solution provides a preferred implementation of a portable county-level meteorological emergency communication system bracket, in which the second elastic portion of the second elastic locking tongue is arranged inside the third support tube, which can not only protect it, but also reduce the installation space, and then, under the premise of the same overall size, the diameter of the third support tube and the second support tube can be enlarged to make the support effect more stable. In addition, the second elastic locking tongue and the second limiting groove that are adapted to each other can be arranged in multiple groups and distributed around the circumference, preferably in two groups.

[0024] Furthermore, the upper half of the vertical plate is a triangular structure with the tip facing upward, the mounting rod is hinged to the top of the triangular structure via a hinge shaft, and the perpendicular midline of the hinge shaft passes through the middle of the circular arc groove.

[0025] Based on the above technical scheme, this technical scheme provides an optimal implementation method of a portable county-level meteorological emergency communication system bracket. The special structural setting of the vertical plate and the arc groove can not only reduce the use of plate materials, but also provide two optional layout methods during installation. That is, the entire bracket can be swapped left and right, and the direction adjustment of the Beidou terminal equipment can be realized.

[0026] Furthermore, an adjustment seat is provided at the upper end of the horizontal seat, the adjustment seat is connected to the horizontal seat through a plurality of leveling bolts, and a level gauge is provided on the upper end surface of the adjustment seat, so as to further ensure the installation accuracy and conveniently ensure that the entire bracket is in a vertical state.

[0027] Furthermore, a slide groove parallel to the vertical plate is arranged on the horizontal seat, and a north-pointing plate is slidably arranged in the slide groove to indicate the true north direction.

[0028] Furthermore, the pull rings are equiangularly arranged around the axis of the first support tube, and the upper end of the telescopic tube assembly and the lower end of the first support tube are both provided with cable through holes.

[0029] Compared with the prior art, the portable county-level meteorological emergency communication system bracket provided by the utility model solves the technical problem of low installation and turnover efficiency caused by the need for prefabricated cement bases to support the Beidou terminal equipment of the county-level meteorological emergency communication system. This technical solution can replace the traditional county-level meteorological emergency communication system bracket, which not only does not require prefabricated cement foundations, but also does not require the installation of embedded bolts. It is also adaptable to various surface environments, can be quickly erected, can be conveniently stored, and can change the installation position at any time, saving manpower, material and financial resources, and has good practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 It is a structural diagram of traditional hardware equipment;

[0032] Figure 2 It is the front view of the utility model;

[0033] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0034] Figure 4 is a cross-sectional view of the first elastic locking tongue;

[0035] Figure 5 It is a cross-sectional view of the second elastic locking tongue.

[0036] Description of Figure Numbers:

[0037] Beidou terminal equipment 100, mounting pole 110, vertical pole 200, cement foundation 300, embedded bolts 400, mounting plate 500;

[0038] The first support tube 1, the support base 101, the pull ring 102, the pull rope 103, and the ground nail 104;

[0039] The second support tube 2, the first limiting groove 201, the first elastic locking tongue 202, the first through groove 203, the first elastic part 204, and the first locking head 205;

[0040] The third support tube 3, the second limiting groove 301, the second elastic locking tongue 302, the second through groove 303, the second elastic part 304, and the second locking head 305;

[0041] Leveling seat 4, level gauge 401, north plate 402, adjusting seat 403, leveling bolt 404;

[0042] Vertical plate 5, arc groove 501, locking bolt group 502, hinge shaft 503;

[0043] Cable pass-through 6. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the embodiments in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the core concept of the utility model and the following embodiments, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0045] A portable county-level meteorological emergency communication system bracket, such as Figure 2 and Figure 3 As shown, it includes a first support tube 1 located at the bottom, a support seat 101 is arranged at the bottom of the first support tube 1, at least three pull rings 102 are arranged at intervals on the upper part, the pull ring 102 is connected to the ground nail 104 through a pull rope 103, the first support tube 1 is slidably connected to the telescopic tube assembly, a first positioning structure is arranged between the telescopic tube assembly and the first support tube 1, the top of the telescopic tube assembly is connected to the horizontal seat 4, the horizontal seat 4 is hinged to the mounting rod 110 of the Beidou terminal device 100 through the vertical plate 5, the vertical plate 5 is provided with an arc groove 501 around the hinge point, and the mounting rod 110 is provided with a locking bolt group 502 adjustably connected to the arc groove 501.

[0046] This technical solution can replace the traditional county-level meteorological emergency communication system bracket. It does not require a prefabricated cement foundation or embedded bolts, and is adaptable to various surface environments. It can be quickly erected and conveniently stored, saving manpower and material resources, and has great practical value. The support seat 101 works together with the pull rope 103 and the ground nail 104 to ensure that the first support tube 1 can be firmly and vertically supported in various surface environments; the telescopic tube assembly and the first support tube 1 are nested and matched with each other, so that they can be conveniently stored and unfolded. The telescopic tube assembly can be firmly supported on the upper end of the first support tube 1 through the first positioning structure; the horizontal seat 4 provides horizontal support for the vertical plate 5, and the vertical plate 5 provides support for the Beidou terminal device 100. The hinged structure cooperates with the arc groove 501 and the locking bolt group 502 to conveniently adjust the direction of the Beidou terminal device 100.

[0047] Based on the above embodiments, this embodiment provides a preferred design structure of a portable county-level meteorological emergency communication system bracket, such as Figure 2 As shown, the telescopic tube assembly includes a second support tube 2 slidably connected to the first support tube 1, and a third support tube 3 slidably connected to the second support tube 2. The first positioning structure is arranged between the first support tube 1 and the second support tube 2, and the second positioning structure is arranged between the second support tube 2 and the third support tube 3.

[0048] That is, the telescopic tube assembly is configured as a second support tube 2 and a third support tube 3 that are nested with each other, and the second support tube 2 and the third support tube 3 are positioned by a second positioning structure, and can cooperate with the first support tube 1 to achieve two-stage telescopic expansion, further improving the convenience of storage and transportation. The second positioning structure can be different from the first positioning structure or the same as the first positioning structure, as long as the positioning support function can be achieved.

[0049] Preferably, the length of the first support tube 1 is 60 cm, the length of the second support tube 2 is 50 cm, and the length of the third support tube 3 is 40 cm. The pull ring 102 is located at a height of 50 cm of the first support tube 1 .

[0050] Based on the above embodiments, this embodiment provides a preferred design structure of a portable county-level meteorological emergency communication system bracket, such as Figure 2 and Figure 4 As shown, the first positioning structure includes a first limiting groove 201 opened at the upper end of the first support tube 1 , and the lower end of the second support tube 2 is provided with a first elastic locking tongue 202 adapted to the first limiting groove 201 .

[0051] That is, the first positioning structure is set to a structural form in which the first elastic locking tongue 202 and the first limiting groove 201 are blocked. In the stored state, the first elastic locking tongue 202 is in a compressed state; in the expanded state, the first elastic locking tongue 202 automatically extends into the first limiting groove 201 to achieve axial blocking; when it is necessary to store, pressing the first elastic locking tongue 202 can make the first elastic locking tongue 202 disengage from the first limiting groove 201, thereby releasing the axial blocking, and the second support tube 2 can be retracted into the first support tube 1.

[0052] Based on the above embodiments, this embodiment provides a preferred design structure of a portable county-level meteorological emergency communication system bracket, such as Figure 4 As shown, a first through slot 203 is formed on the side wall of the second support tube 2, a first elastic portion 204 of the first elastic locking tongue 202 is arranged inside the second support tube 2, the first elastic portion 204 is connected to a first locking head 205 passing through the first through slot 203, and the first elastic locking tongue 202 is adapted to the first limiting slot 201 through the first locking head 205.

[0053] That is, the first elastic portion 204 of the first elastic locking tongue 202 is arranged inside the second support tube 2, which can not only protect it, but also reduce the installation space, and then under the premise of the same overall size, the diameter of the first support tube 1 and the second support tube 2 can be enlarged to make the support effect more stable. In addition, the mutually adapted first elastic locking tongue 202 and the first limiting groove 201 can be arranged in multiple groups and distributed around the circumference, preferably in two groups.

[0054] Based on the above embodiments, this embodiment provides a preferred design structure of a portable county-level meteorological emergency communication system bracket, such as Figure 2 and Figure 5 As shown, the second positioning structure includes a second limiting groove 301 opened at the upper end of the second support tube 2 , and the lower end of the third support tube 3 is provided with a second elastic locking tongue 302 adapted to the second limiting groove 301 .

[0055] That is, the second positioning structure is set to a structural form in which the second elastic locking tongue 302 and the second limiting groove 301 are blocked. In the stored state, the second elastic locking tongue 302 is in a compressed state; in the expanded state, the second elastic locking tongue 302 automatically extends into the second limiting groove 301 to achieve axial blocking; when it needs to be stored, pressing the first elastic locking tongue 202 can make the second elastic locking tongue 302 disengage from the second limiting groove 301, thereby releasing the axial blocking, and the third support tube 3 can be retracted into the second support tube 2.

[0056] Based on the above embodiments, this embodiment provides a preferred design structure of a portable county-level meteorological emergency communication system bracket, such as Figure 5 As shown, a second through slot 303 is provided on the side wall of the third support tube 3, a second elastic portion 304 of the second elastic locking tongue 302 is arranged inside the third support tube 3, the second elastic portion 304 is connected to a second locking head 305 passing through the second through slot 303, and the second elastic locking tongue 302 is adapted to the second limiting slot 301 through the second locking head 305.

[0057] That is, the second elastic portion 304 of the second elastic locking tongue 302 is arranged inside the third support tube 3, which can not only protect it, but also reduce the installation space, and then under the premise of the same overall size, the diameter of the third support tube 3 and the second support tube 2 can be enlarged to make the support effect more stable. In addition, the second elastic locking tongue 302 and the second limiting groove 301 that are adapted to each other can be arranged in multiple groups and distributed around the circumference, preferably in two groups.

[0058] Based on the above embodiments, this embodiment provides a preferred design structure of a portable county-level meteorological emergency communication system bracket, such as Figure 3 As shown, the upper half of the vertical plate 5 is a triangular structure with the tip facing upward, and the mounting rod 110 is hinged to the top of the triangular structure through a hinge shaft 503 , and the perpendicular midline of the hinge shaft 503 passes through the middle of the arc groove 501 .

[0059] Based on the above embodiments, this embodiment provides a preferred design structure of a portable county-level meteorological emergency communication system bracket, such as Figure 3 As shown, the special structural setting of the vertical plate 5 and the arc groove 501 can not only reduce the material used for the plate, but also provide two optional layout methods during installation, that is, the entire bracket can be swapped left and right, and the direction adjustment of the Beidou terminal device 100 can be achieved.

[0060] Furthermore, an adjustment seat 403 is provided at the upper end of the horizontal seat 4, and the adjustment seat 403 is connected to the horizontal seat 4 through a plurality of leveling bolts 404, and a level 401 is provided on the upper end surface of the adjustment seat 403. The installation accuracy is further guaranteed, and the entire bracket can be conveniently ensured to be in a vertical state.

[0061] Based on the above embodiments, this embodiment provides a preferred design structure of a portable county-level meteorological emergency communication system bracket, such as Figure 3 As shown, the horizontal seat 4 is provided with a slide groove parallel to the vertical plate 5, and a north indicator plate 402 is slidably provided in the slide groove to indicate the true north direction.

[0062] Based on the above embodiments, this embodiment provides a preferred design structure of a portable county-level meteorological emergency communication system bracket, such as Figure 2As shown, the pull rings 102 are arranged equiangularly around the axis of the first support tube 1 , and the upper end of the telescopic tube assembly and the lower end of the first support tube 1 are both provided with cable through holes 6 .

[0063] The parts not described in detail in the present invention are all conventional technical means known to those skilled in the art.

[0064] The above content shows and describes the basic principle, main features and beneficial effects of the utility model. The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A portable county-level meteorological emergency communication system bracket, characterized in that: The device comprises a first support tube (1) located at the bottom, a support seat (101) being arranged at the bottom of the first support tube (1), at least three pull rings (102) being arranged at intervals at the top, the pull ring (102) being connected to a ground nail (104) via a pull rope (103), a telescopic tube assembly being slidably connected to the first support tube (1), a first positioning structure being arranged between the telescopic tube assembly and the first support tube (1), a horizontal seat (4) being connected to the top of the telescopic tube assembly, the horizontal seat (4) being hinged to a mounting rod (110) of a Beidou terminal device (100) via a vertical plate (5), a circular arc groove (501) surrounding a hinge point being provided on the vertical plate (5), and a locking bolt group (502) adjustably connected to the circular arc groove (501) being arranged on the mounting rod (110); The upper half of the vertical plate (5) is a triangular structure with the tip facing upwards, and the mounting rod (110) is hinged to the top of the triangular structure via a hinge shaft (503), wherein the mid-perpendicular line of the hinge shaft (503) passes through the middle of the circular arc groove (501).

2. The portable county-level meteorological emergency communication system support according to claim 1 is characterized in that: The telescopic tube assembly comprises a second support tube (2) slidably connected to the first support tube (1), and a third support tube (3) slidably connected to the second support tube (2); the first positioning structure is arranged between the first support tube (1) and the second support tube (2), and the second positioning structure is arranged between the second support tube (2) and the third support tube (3).

3. The portable county-level meteorological emergency communication system support according to claim 2 is characterized in that: The first positioning structure comprises a first limiting groove (201) provided at the upper end of the first support tube (1), and the lower end of the second support tube (2) is provided with a first elastic locking tongue (202) adapted to the first limiting groove (201).

4. The portable county-level meteorological emergency communication system support according to claim 3 is characterized in that: A first through slot (203) is formed on the side wall of the second support tube (2); a first elastic portion (204) of the first elastic locking tongue (202) is arranged inside the second support tube (2); the first elastic portion (204) is connected to a first locking head (205) passing through the first through slot (203); and the first elastic locking tongue (202) is adapted to the first limiting slot (201) via the first locking head (205).

5. The portable county-level meteorological emergency communication system support according to claim 2 is characterized in that: The second positioning structure comprises a second limiting groove (301) provided at the upper end of the second support tube (2), and the lower end of the third support tube (3) is provided with a second elastic locking tongue (302) adapted to the second limiting groove (301).

6. The portable county-level meteorological emergency communication system support according to claim 5 is characterized in that: The side wall of the third support tube (3) is provided with a second through slot (303); the second elastic portion (304) of the second elastic locking tongue (302) is arranged inside the third support tube (3); the second elastic portion (304) is connected to a second locking head (305) passing through the second through slot (303); the second elastic locking tongue (302) is adapted to the second limiting slot (301) via the second locking head (305).

7. The portable county-level meteorological emergency communication system support according to any one of claims 1 to 6, characterized in that: An adjustment seat (403) is provided at the upper end of the horizontal seat (4); the adjustment seat (403) is connected to the horizontal seat (4) via a plurality of leveling bolts (404); and a level gauge (401) is provided on the upper end surface of the adjustment seat (403).

8. The portable county-level meteorological emergency communication system support according to claim 7 is characterized in that: The horizontal seat (4) is provided with a slide groove parallel to the vertical plate (5), and a north pointing plate (402) is slidably arranged in the slide groove.

9. The portable county-level meteorological emergency communication system support according to claim 8 is characterized in that: The pull rings (102) are arranged equiangularly around the axis of the first support tube (1), and the upper end of the telescopic tube assembly and the lower end of the first support tube (1) are both provided with cable through holes (6).

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