CN220650704U

CN220650704U - Household wind direction and wind speed indicator

Info

Publication number: CN220650704U
Application number: CN202322025346.4U
Authority: CN
Inventors: 郭建海
Original assignee: Dongguan Wormhole Trading Co ltd
Current assignee: Dongguan Wormhole Trading Co ltd
Priority date: 2023-07-31
Filing date: 2023-07-31
Publication date: 2024-03-22
Anticipated expiration: 2033-07-31

Abstract

The utility model discloses a household anemometer, which comprises a support assembly, a blade assembly and a wind vane, wherein the support assembly comprises a support base; the blade assembly comprises a middle disc, a transverse mounting rod and a rotary blade, wherein a disc through hole is formed in the core part of the middle disc; the support assembly further comprises a top screw rod and a rotary joint, and the wind vane is rotationally sleeved at the upper end part of the top screw rod; the rotary joint comprises an upper joint sleeve and a lower joint sleeve, the upper end part of the lower joint sleeve is inserted into a through hole of a core part of the upper joint sleeve, a joint bearing is arranged between the inner wall of the upper joint sleeve and the upper end part of the lower joint sleeve, and the inner wall of the through hole of the core part of the lower joint sleeve is provided with a sleeve internal thread; the rotary joint lower joint sleeve is sleeved with the upper end of the supporting base in an opposite-inserting way, the middle disc is sleeved at the upper end of the upper joint sleeve through a disc through hole, and the lower end of the top screw rod is in threaded connection with the internal thread of the sleeve. Through the structural design, the utility model has the advantages of novel structural design and convenient disassembly and assembly.

Description

Household wind direction and wind speed indicator

Technical Field

The utility model relates to the technical field of anemometers, in particular to a household anemometer.

Background

The patent number is: ZL202123142471.0, patent name: the utility model discloses a Chinese patent utility model of a self-generating wind vane, which can realize wind direction and wind speed indication and actually discloses a wind direction and wind speed indicator structure.

Specifically, above-mentioned wind vane from electricity generation includes fixed plate, the support column, threaded rod and movable rod, the bottom fixed connection fixed plate of support column, and the bottom fixed connection base of fixed plate, the outer wall of fixed plate top support column is provided with bearing structure, threaded rod outer wall thread bush's top end fixedly connected with movable rod, and the top of movable rod extends to the top of support column, the top of movable rod sets up the mounting panel, the equal fixed connection fixed block in top of movable rod and the bottom of mounting panel, and the inside swing joint of fixed block has the installation piece, one side of installation piece transversely runs through there is the wind vane main part, the intermediate position department fixedly connected with generator on mounting panel top, the top fixedly connected with main shaft of generator, and the outer wall cover of main shaft is equipped with the installation cover, the even fixedly connected with connecting rod of outer wall of installation cover, and one side of connecting rod equal fixedly connected with wind bowl. When the wind vane is used, the wind vane body is used for indicating the wind direction, and the vane assembly consisting of the mounting sleeve, the connecting rod and the wind bowl rotates and is used for indicating the wind speed, so that the function of the wind vane and the wind speed indicator can be realized.

It should be noted that, for the self-generating wind vane described above, it has the following drawbacks: the whole supporting component is complex in structure and difficult to realize quick assembly disassembly, and the wind vane main body and the fan blade component are difficult to assemble and disassemble.

Disclosure of Invention

The utility model aims to provide a household anemometer aiming at the defects of the prior art, which is novel in design and convenient to assemble and disassemble.

In order to achieve the above object, the present utility model is achieved by the following technical scheme.

The household anemometer comprises a supporting component, a blade component and a wind vane, wherein the supporting component comprises a supporting base;

the blade assembly comprises a middle disc, a disc through hole is formed in the core part of the middle disc, a plurality of transverse mounting rods are arranged on the middle disc, and rotary blades are respectively arranged at the outer end parts of the transverse mounting rods;

the support assembly further comprises a top screw rod and a rotary joint, and the wind vane is rotationally sleeved at the upper end part of the top screw rod;

the rotary joint comprises an upper joint sleeve and a lower joint sleeve which are respectively in hollow pipe shapes, the upper end part of the lower joint sleeve is inserted into a core through hole of the upper joint sleeve, a joint bearing is arranged between the inner wall of the upper joint sleeve and the upper end part of the lower joint sleeve, and the inner wall of the core through hole of the lower joint sleeve is provided with a sleeve internal thread;

the lower joint sleeve of the rotary joint is sleeved with the upper end of the supporting base in an opposite-inserting manner, the middle disc of the blade assembly is sleeved at the upper end of the upper joint sleeve of the rotary joint through a disc through hole, the lower end of the top screw rod is inserted into the rotary joint, and the lower end of the top screw rod is in threaded connection with the internal thread of the sleeve.

The support assembly comprises two rotary joints, wherein the two rotary joints are arranged at intervals up and down, a middle screw rod which is vertically arranged is arranged between the two rotary joints, and the upper end part and the lower end part of the middle screw rod are respectively in threaded connection with internal threads of the sleeve pipes on the corresponding sides;

the lower end part of the lower joint sleeve of the lower rotary joint is sleeved with the upper end part of the supporting base in an opposite-inserting way, the lower end part of the top screw rod is inserted into the upper rotary joint, and the lower end part of the top screw rod is in threaded connection with the internal thread of the sleeve of the upper rotary joint.

The middle disc comprises an upper disc and a lower disc which is in threaded connection with the upper disc, an upper through hole which vertically penetrates is formed in the core of the upper disc, a lower through hole which vertically aligns with the upper through hole and vertically penetrates is formed in the core of the lower disc, and the upper through hole and the lower through hole jointly form the disc through hole;

and disc clamping holes with radial outward openings are formed between the upper disc and the lower disc corresponding to the transverse mounting rods respectively, and the inner ends of the transverse mounting rods are respectively embedded and clamped in the corresponding disc clamping holes.

The inner end of each transverse installation rod is respectively provided with an inner end limiting clamping groove with a radial outward opening, the outer end of each transverse installation rod is respectively provided with an outer end limiting clamping groove with a radial outward opening, and the opening directions of the inner end limiting clamping grooves and the outer end limiting clamping grooves of the same transverse installation rod are vertical;

each rotary blade is a groove-shaped blade in a curved surface shape, each rotary blade is provided with a blade convex position corresponding to the outer end limiting clamping groove of the corresponding transverse mounting rod, and the blade convex position of each rotary blade is inserted into the outer end limiting clamping groove of the corresponding transverse mounting rod;

the inner wall of each disc clamping hole is provided with a disc convex position corresponding to the inner end limiting clamping groove of the corresponding transverse installation rod, and each disc convex position is inserted into the inner end limiting clamping groove of the corresponding transverse installation rod.

Wherein each of the rotary blades is respectively bound to the outer end portion of the corresponding transverse mounting rod by a binding band.

The upper end part of the top screw rod is sleeved with a top bearing, the upper end part of the top screw rod is in threaded connection with two limit nuts which are arranged at intervals up and down, and the top bearing is clamped and limited between the two limit nuts;

the middle part of the wind vane is provided with a middle sleeve, and the middle sleeve is sleeved on the bearing outer ring of the top bearing.

The sleeve nut is embedded in the core through hole of the lower joint sleeve, the sleeve nut is in interference fit with the lower joint sleeve, and the sleeve internal thread is arranged on the inner wall of the central hole of the sleeve nut.

The support base comprises a base vertical rod which is vertically arranged, a base chassis is arranged at the lower end part of the base vertical rod, and a plurality of locking holes which are sequentially arranged at intervals and vertically penetrate through the base chassis respectively;

the lower end part of the lower joint sleeve is sleeved with the upper end part of the base vertical rod in an opposite-plug manner.

Compared with the prior art, the utility model has the following beneficial effects: the rotary joint, the blade assembly and the wind vane are respectively installed in a sleeving manner, the top screw rod is in threaded connection with the internal thread of the sleeve of the rotary joint in a threaded connection manner, and the assembly manner has the advantage of convenience and rapidness in assembly; when needs dismantlement is accomodate, only need with top screw rod unscrew to with rotatory joint, blade subassembly, wind vane simply extract can, dismantle convenient and be convenient for accomodate. Therefore, the household anemoscope has the advantages of novel structural design and convenient and quick disassembly and assembly, and is particularly suitable for families.

Drawings

The utility model will be further described with reference to the accompanying drawings, in which embodiments do not constitute any limitation of the utility model.

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is an exploded view of fig. 1.

Fig. 3 is a schematic structural view of another embodiment of the present utility model.

Fig. 4 is an exploded view of fig. 3.

Fig. 5 is an enlarged partial schematic view of fig. 4.

FIG. 6 is a schematic view of the vane assembly of the present utility model.

Fig. 7 is an exploded view of fig. 6.

Fig. 8 is an enlarged partial schematic view of fig. 7.

Fig. 9 is an enlarged partial schematic view of the alternative position of fig. 7.

Fig. 10 is a schematic view of the structure of the transverse mounting bar of the present utility model.

Fig. 11 is a schematic structural view of a rotary joint according to the present utility model.

Fig. 1 to 11 include:

1-a support assembly; 11-a support base; 111-a base vertical rod; 112-a base chassis; 1121-a locking hole; 12-top screw; 121-top bearing; 122-limit nuts; 13-a rotary joint; 131-upper joint sleeve; 132-lower joint sleeve; 133-sleeve internal threads; 14-an intermediate screw; 15-sleeve nut; 2-a blade assembly; 21-an intermediate disc; 211-disc through holes; 212-upper disc; 2121-upper through holes; 213-lower disc; 2131-lower through holes; 214-a disc clamping hole; 215-disc boss; 22-a transverse mounting bar; 221-inner end limiting clamping groove; 222-an outer end limiting clamping groove; 23-rotating the blades; 231-blade boss; 3-wind vane; 31-middle sleeve.

Detailed Description

The utility model will be described with reference to specific embodiments.

In a first embodiment, as shown in fig. 1 and 2, a domestic anemometer includes a support assembly 1, a blade assembly 2, and a wind vane 3, where the support assembly 1 includes a support base 11.

As shown in fig. 1 and 2, the blade assembly 2 includes a middle disc 21, a disc through hole 211 is formed in a core of the middle disc 21, a plurality of transverse mounting rods 22 are mounted on the middle disc 21, and rotary blades 23 are respectively mounted on outer ends of the transverse mounting rods 22.

Further, the support assembly 1 further comprises a top screw 12 and a rotary joint 13, and the wind vane 3 is rotatably sleeved at the upper end of the top screw 12.

Further, as shown in fig. 11, the rotary joint 13 includes an upper joint sleeve 131 and a lower joint sleeve 132 which are respectively hollow, the upper end of the lower joint sleeve 132 is inserted into the core through hole of the upper joint sleeve 131, a joint bearing (not shown) is installed between the inner wall of the upper joint sleeve 131 and the upper end of the lower joint sleeve 132, and the inner wall of the core through hole of the lower joint sleeve 132 is provided with a sleeve internal thread 133. It should be explained that the core through hole of the upper joint sleeve 131 is of a stepped hole structure with a narrower upper part and a wider lower part, the inner wall of the core through hole of the upper joint sleeve 131 is provided with a limiting stop shoulder, the inner ring of the bearing of the joint bearing is sleeved at the upper end part of the lower joint sleeve 132 and is in interference fit with the upper joint sleeve 131, the outer ring of the bearing of the upper joint sleeve 131 is sleeved at the periphery of the bearing and is in interference fit with the outer ring of the bearing, and the periphery of the bearing of the joint bearing is propped against the limiting stop shoulder on the inner wall of the upper joint sleeve 131.

In addition, the lower joint sleeve 132 of the rotary joint 13 is inserted and connected with the upper end of the supporting base 11, the middle disc 21 of the blade assembly 2 is sleeved on the upper end of the upper joint sleeve 131 of the rotary joint 13 through a disc through hole 211, the lower end of the top screw 12 is inserted into the rotary joint 13, and the lower end of the top screw 12 is in threaded connection with the sleeve internal thread 133.

As shown in fig. 1 and 2, in the assembly process of the household anemometer according to the first embodiment, the supporting base 11 is vertically fixed, and then the lower joint sleeve 132 of the rotary joint 13 is inserted and sleeved at the upper end of the supporting base 11; after the rotary joint 13 is sleeved, the blade assembly 2 is installed, and the blade assembly 2 is sleeved at the upper end part of the upper joint sleeve 131 of the rotary joint 13 through the disc through hole 211 of the middle disc 21 of the blade assembly 2; after the blade assembly 2 is installed, the lower end part of the top screw rod 12 extends into the rotary joint 13, and the lower end part of the top screw rod 12 is screwed and screwed on the sleeve internal thread 133 of the inner wall of the through hole of the core part of the lower joint sleeve 132; after the top screw 12 is installed, the wind vane 3 is sleeved on the upper end part of the top screw 12.

When the wind power generation device is used, under the driving of wind power, the wind vane 3 rotates relative to the top screw 12 and indicates the wind direction, the wind power blows the rotating blades 23 of the blade assembly 2 and enables the blade assembly 2 to rotate, and the wind speed condition can be intuitively known according to the rotating speed of the blade assembly 2. The household anemoscope of the first embodiment can be installed at a courtyard, a balcony and the like, and can be used as a anemoscope on one hand to know wind direction and wind speed; on the other hand, the device can also be used as landscape decoration of a courtyard or a balcony.

It should be emphasized that the rotary joint 13, the vane assembly 2 and the wind vane 3 of the first embodiment are respectively installed in a sleeved mode, the top screw 12 is screwed with the internal thread 133 of the sleeve of the rotary joint 13 in a screwed mode, and the above assembling mode has the advantage of convenient and quick assembly. When the user needs to dismount and store the household anemoscope, the user only needs to unscrew the top screw rod 12, simply pull out the rotary joint 13, the blade assembly 2 and the wind vane 3, and dismantles conveniently and is convenient to store.

Therefore, through the structural design, the household anemoscope of the first embodiment has the advantages of novel structural design and convenient and fast assembly, and is particularly suitable for families.

As shown in fig. 3 and 4, the second embodiment is different from the first embodiment in that: the supporting component 1 comprises two rotary joints 13, wherein the two rotary joints 13 are arranged at intervals up and down, a middle screw 14 which is vertically arranged is arranged between the two rotary joints 13, and the upper end part and the lower end part of the middle screw 14 are respectively in threaded connection with the internal threads 133 of the sleeve on the corresponding side.

The lower end of the lower joint sleeve 132 of the lower rotary joint 13 is inserted into the upper end of the supporting base 11, the lower end of the top screw 12 is inserted into the upper rotary joint 13, and the lower end of the top screw 12 is screwed with the sleeve internal thread 133 of the upper rotary joint 13.

The household anemometer of the second embodiment is of a double-layer fan blade structure, and when the household anemometer is assembled, the upper and lower fan blade assemblies can be reversely installed; when in use, the two layers of fan blade components rotate independently and do not affect each other.

As shown in fig. 6 to 9, the third embodiment is different from the first embodiment in that: the middle disc 21 comprises an upper disc 212 and a lower disc 213 screwed with the upper disc 212, wherein a vertically penetrating upper through hole 2121 is formed in the core of the upper disc 212, a vertically aligned and vertically penetrating lower through hole 2131 is formed in the core of the lower disc 213, and the upper through hole 2121 and the lower through hole 2131 together form a disc through hole 211.

Wherein, each transverse mounting rod 22 between the upper disc 212 and the lower disc 213 is respectively formed with a disc clamping hole 214 which is opened radially outwards, and the inner end of each transverse mounting rod 22 is respectively embedded and clamped in the corresponding disc clamping hole 214.

When each transverse mounting rod 22 is mounted on the middle disc 21, a user only needs to clamp and fix each transverse mounting rod 22 in the corresponding disc clamping hole 214, and the mounting is convenient and quick.

As shown in fig. 8 to 10, the fourth embodiment differs from the third embodiment in that: the inner end of each transverse installation rod 22 is respectively provided with an inner end limiting clamping groove 221 which is radially outwards opened, the outer end of each transverse installation rod 22 is respectively provided with an outer end limiting clamping groove 222 which is radially outwards opened, and the opening directions of the inner end limiting clamping grooves 221 and the outer end limiting clamping grooves 222 of the same transverse installation rod 22 are vertical.

Wherein, each rotary blade 23 is a groove-shaped blade with a curved surface, the outer end limiting clamping groove 222 of each rotary blade 23 corresponding to the transverse installation rod 22 is respectively provided with a blade convex position 231, and the blade convex position 231 of each rotary blade 23 is respectively inserted into the outer end limiting clamping groove 222 of the corresponding transverse installation rod 22.

In addition, the inner wall of each disc clamping hole 214 is provided with a disc protrusion 215 corresponding to the inner end limiting clamping groove 221 of the corresponding transverse mounting rod 22, and each disc protrusion 215 is inserted into the inner end limiting clamping groove 221 of the corresponding transverse mounting rod 22.

In the assembly process of the blade assembly 2 of the fourth embodiment, in the case where the rotary blades 23 are groove-shaped blades, it is necessary to ensure that the groove-shaped blades are oriented uniformly when they are mounted for each rotary blade 23 of the same blade assembly 2. Because the opening directions of the inner end limit clamping groove 221 and the outer end limit clamping groove 222 of each transverse mounting rod 22 in the fourth embodiment are perpendicular, and the middle disc 21 is matched with the inner end limit clamping groove 221 through the disc convex position 215 and the rotating blades 23 are matched with the outer end limit clamping groove 222 through the blade convex position 231, the structural design can effectively ensure that all the rotating blades 23 in the same blade assembly 2 are mounted downward uniformly.

Embodiment five, this embodiment five differs from embodiment four in that: each of the rotary blades 23 is respectively bound to the outer end portion of the corresponding transverse mounting bar 22 by a binding band.

As shown in fig. 5, the sixth embodiment is different from the first embodiment in that: the upper end of the top screw rod 12 is sleeved with a top bearing 121, and the upper end of the top screw rod 12 is in threaded connection with two limit nuts 122 which are arranged at intervals up and down, and the top bearing 121 is clamped and limited between the two limit nuts 122.

Wherein, the middle part of wind vane 3 is provided with middle part sleeve pipe 31, and middle part sleeve pipe 31 suit is in the bearing outer lane of top bearing 121.

By installing the top bearing 121 at the upper end of the top screw 12, the sixth embodiment can ensure that the wind vane 3 rotates smoothly with respect to the top screw 12 to accurately indicate the wind direction.

Embodiment seven, as shown in fig. 11, is different from embodiment one in that: the core through hole of the lower joint sleeve 132 is embedded with a sleeve nut 15, the sleeve nut 15 is in interference fit with the lower joint sleeve 132, and the sleeve internal thread 133 is arranged on the inner wall of the central hole of the sleeve nut 15.

Embodiment eight, as shown in fig. 1 to 4, the difference between this embodiment eight and embodiment one is that: the supporting base 11 comprises a base vertical rod 111 which is vertically arranged, a base chassis 112 is arranged at the lower end part of the base vertical rod 111, and a plurality of locking holes 1121 which are sequentially arranged at intervals and vertically penetrate through the base chassis 112 respectively.

Wherein, the lower end of the lower joint sleeve 132 is inserted and sleeved with the upper end of the base vertical rod 111.

In the fixing installation of the support base 11 of the eighth embodiment, each locking hole 1121 of the base chassis 112 may be installed with a locking screw, that is, the support base 11 may be fixed at a corresponding position by locking the locking screw with the base chassis 112.

The foregoing is merely exemplary of the present utility model, and those skilled in the art should not be considered as limiting the utility model, since modifications may be made in the specific embodiments and application scope of the utility model in light of the teachings of the present utility model.

Claims

1. The household anemometer comprises a supporting component (1), a blade component (2) and a wind vane (3), wherein the supporting component (1) comprises a supporting base (11);

the blade assembly (2) comprises a middle disc (21), a disc through hole (211) is formed in the core part of the middle disc (21), a plurality of transverse mounting rods (22) are arranged on the middle disc (21), and rotary blades (23) are respectively arranged at the outer end parts of the transverse mounting rods (22);

the method is characterized in that: the supporting component (1) further comprises a top screw (12) and a rotary joint (13), and the wind vane (3) is rotatably sleeved at the upper end part of the top screw (12);

the rotary joint (13) comprises an upper joint sleeve (131) and a lower joint sleeve (132) which are respectively in hollow pipe shapes, wherein the upper end part of the lower joint sleeve (132) is inserted into a core through hole of the upper joint sleeve (131), a joint bearing is arranged between the inner wall of the upper joint sleeve (131) and the upper end part of the lower joint sleeve (132), and a sleeve internal thread (133) is arranged on the inner wall of the core through hole of the lower joint sleeve (132);

the lower joint sleeve (132) of the rotary joint (13) is sleeved with the upper end part of the supporting base (11) in an opposite-inserting mode, the middle disc (21) of the blade assembly (2) is sleeved at the upper end part of the upper joint sleeve (131) of the rotary joint (13) through a disc through hole (211), the lower end part of the top screw (12) is inserted into the rotary joint (13), and the lower end part of the top screw (12) is in threaded connection with the sleeve internal thread (133).

2. A domestic wind anemometer according to claim 1, wherein: the supporting component (1) comprises two rotary joints (13), wherein the two rotary joints (13) are arranged at intervals up and down, a middle screw rod (14) which is vertically arranged is arranged between the two rotary joints (13), and the upper end part and the lower end part of the middle screw rod (14) are respectively in threaded connection with sleeve internal threads (133) on the corresponding sides;

the lower end part of a lower joint sleeve (132) of the lower rotary joint (13) is sleeved with the upper end part of the supporting base (11) in an opposite-inserting way, the lower end part of the top screw rod (12) is inserted into the upper rotary joint (13) and the lower end part of the top screw rod (12) is in threaded connection with a sleeve internal thread (133) of the upper rotary joint (13).

3. A domestic wind anemometer according to claim 1, wherein: the middle disc (21) comprises an upper disc (212) and a lower disc (213) which is in threaded connection with the upper disc (212), an upper through hole (2121) which penetrates vertically is formed in the core of the upper disc (212), a lower through hole (2131) which is vertically aligned with the upper through hole (2121) and penetrates vertically is formed in the core of the lower disc (213), and the upper through hole (2121) and the lower through hole (2131) form the disc through hole (211) together;

a disc clamping hole (214) which is opened outwards in the radial direction is formed between the upper disc (212) and the lower disc (213) corresponding to each transverse mounting rod (22), and the inner end of each transverse mounting rod (22) is respectively embedded and clamped in the corresponding disc clamping hole (214).

4. A domestic anemometer according to claim 3, wherein: the inner end of each transverse installation rod (22) is respectively provided with an inner end limiting clamping groove (221) which is radially outwards opened, the outer end of each transverse installation rod (22) is respectively provided with an outer end limiting clamping groove (222) which is radially outwards opened, and the opening directions of the inner end limiting clamping grooves (221) and the outer end limiting clamping grooves (222) of the same transverse installation rod (22) are vertical;

each rotary blade (23) is a groove-shaped blade with a curved surface shape, the outer end limiting clamping groove (222) of each rotary blade (23) corresponding to the transverse installation rod (22) is provided with a blade convex position (231) respectively, and the blade convex position (231) of each rotary blade (23) is inserted into the outer end limiting clamping groove (222) of the corresponding transverse installation rod (22) respectively;

the inner wall of each disc clamping hole (214) is provided with a disc convex position (215) corresponding to the inner end limiting clamping groove (221) of the corresponding transverse mounting rod (22), and each disc convex position (215) is inserted into the inner end limiting clamping groove (221) of the corresponding transverse mounting rod (22) respectively.

5. A domestic wind anemometer according to claim 4 wherein: each of the rotary blades (23) is respectively bound to the outer end portion of the corresponding transverse mounting rod (22) by a binding band.

6. A domestic wind anemometer according to claim 1, wherein: the upper end part of the top screw rod (12) is sleeved with a top bearing (121), the upper end part of the top screw rod (12) is in threaded connection with two limit nuts (122) which are arranged at intervals up and down, and the top bearing (121) is clamped and limited between the two limit nuts (122);

the middle part of wind vane (3) is provided with middle part sleeve pipe (31), and middle part sleeve pipe (31) suit is in the bearing outer lane of top bearing (121).

7. A domestic wind anemometer according to claim 1, wherein: the core through hole of the lower joint sleeve (132) is embedded with a sleeve nut (15), the sleeve nut (15) is in interference fit with the lower joint sleeve (132), and the sleeve internal thread (133) is arranged on the inner wall of the central hole of the sleeve nut (15).

8. A domestic wind anemometer according to claim 1, wherein: the supporting base (11) comprises base vertical rods (111) which are vertically arranged, a base chassis (112) is arranged at the lower end part of the base vertical rods (111), and a plurality of locking holes (1121) which are sequentially arranged at intervals and vertically penetrate through the base chassis (112);

the lower end part of the lower joint sleeve (132) is sleeved with the upper end part of the base vertical rod (111) in a butt-plug manner.