A kind of small-sized adjustable 5G signal transmitting tower
Technical field
The present invention relates to a kind of signal transmitting towers, more particularly to a kind of small-sized adjustable 5G signal transmitting tower.
Background technique
5G, the 5th generation mobile phone mobile communication standard of full name, also referred to as the 5th third-generation mobile communication technology.
On May 13rd, 2013, Co., Ltd, Samsung, South Korea announce, successfully develop the 5th third-generation mobile communication technology 5G
Core technology, it is contemplated that start to push to be commercialized in the year two thousand twenty.Extremely head is sent to propose 5G new concept: terminal base station on May 29th, 2015
Change.On January 7th, 2016, Ministry of Industry and Information hold " test of 5G technical research " starting meeting.On 2 9th, 2017, international communication standards group
Knit the official Logo that 3GPP announces " 5G ".Chinese three big common carriers stepped the 5G commercialization first step in 2018, and strove
The extensive commercialization of 5G is realized in the year two thousand twenty.
The transmitting of 5G signal needs to use 5G signal transmitting tower, but existing signal tower structure is more single, can not
Its height is finely adjusted.
Summary of the invention
The object of the present invention is to provide a kind of small-sized adjustable 5G signal transmitting towers, can effectively solve existing signal tower knot
The problem of structure is single, can not be finely adjusted to its height;Inside of the invention be equipped with can by base height regulating mechanism into
The lifting base of row height adjustment can drive the transmitting being mounted on lifting base by the adjusting of lifting base height
The height of tower ontology.
The purpose of the present invention is achieved through the following technical solutions:
A kind of small-sized adjustable 5G signal transmitting tower, including launching tower ontology, lifting base, protective fence, base height tune
Mechanism, fixed pedestal, gear mechanism, auxiliary positioning mechanism, fixed bracket institution, movable support mechanism and buried pedestal are saved,
The launching tower ontology and protective fence are all fixedly connected on lifting base;The protective fence is set in the outer of launching tower ontology
Side;The lower end of the lifting base is fixedly connected with the upper end of base height regulating mechanism, and the lower end of base height regulating mechanism connects
It connects on fixed pedestal;The outside of the fixed pedestal is uniformly fixedly connected with the upper end of six fixed bracket institutions, six fixations
The lower end of bracket institution is uniformly fixedly connected on the top surface of buried pedestal;There are six the gear mechanism is set, six gears
Mechanism uniform ring is on the top surface for being fixedly connected on fixed pedestal;There are six the auxiliary positioning mechanism is set, six auxiliary positionings
Mechanism is uniformly slidably connected on the top surface of fixed pedestal;Six auxiliary positioning mechanisms are located at six gear mechanisms
Outside;Be connected by meshing transmission six gear mechanisms on the outside of the base height regulating mechanism, the outside of six gear mechanisms with
Six auxiliary positioning mechanisms are connected by meshing transmission;There are six the movable support mechanism is set, the middle-end of six movable support mechanisms
It is slidably connected on six fixed bracket institutions respectively;The upper end of six movable support mechanisms is respectively fixedly connected at six
The upper end of auxiliary positioning mechanism.
The base height regulating mechanism includes height adjustment change, lead screw, limited block, lift bracket and driving rack;
The height adjustment change is fixedly connected on the top of lead screw, and the upper end of lead screw is rotatably assorted by rolling bearing units is connected to fixation
The center of pedestal, height adjustment change are located at the top of fixed pedestal;The bottom end of the lead screw is fixedly connected with limited block;The liter
The center of drop bracket is threadedly attached on lead screw, and lift bracket is between fixed pedestal and limited block;The driving cog
There are six item is set, the lower end uniform ring of six driving racks is around the outside for being fixedly connected on lift bracket top surface, six driving cogs
The middle-end of item is uniformly slidably connected in the interior rectangle sliding slot on fixed pedestal, the upper end uniform rings of six driving racks around
It is fixedly connected on the bottom surface of lifting base;Tooth on the outside of six driving racks is connected by meshing transmission with six gear mechanisms.
Two axial baffle rings are fixedly connected on the lead screw, two axial baffle rings are slided with the top and bottom of fixed pedestal respectively
Cooperation.
The gear mechanism includes gear, gear shaft and bearing block;Tooth engagement transmission on the outside of the driving rack
The inside of connection gear ontology, gear are rotatably assorted by gear shaft and are connected on bearing block, and bearing block is fixedly connected on
On the top surface of fixed pedestal;Be connected by meshing transmission auxiliary positioning mechanism on the outside of gear.
The auxiliary positioning mechanism includes passive rack gear, transverse frame plate and positioning pluging rod;The middle-end of the passive rack gear is slided
It is cooperatively connected in the outer rectangle sliding slot on fixed pedestal, outer rectangle sliding slot is located at the outside of interior rectangle sliding slot;The passive tooth
The upper end of item is fixedly connected with the upper end of movable support mechanism;The lower end of the passive rack gear is fixedly connected with one end of transverse frame plate;Institute
State the other end that positioning pluging rod is fixedly connected on transverse frame plate.
The positioning pluging rod include screw disk, rotation screw rod, internally threaded sleeve, upper articulated jib, lower articulated jib, annulus seat,
Stop collar and tapered bur soil head;The top for screwing disk and being fixedly connected on rotation screw rod, the middle-end for rotating screw rod pass through screw thread
It is connected in internally threaded sleeve, the lower end for rotating screw rod is fixedly connected with tapered bur soil head;The upper end of the internally threaded sleeve is fixed
It is connected on transverse frame plate;The lower end of the internally threaded sleeve is set there are four upper groove;There are four the upper articulated jib is set, on four
The upper end of articulated jib is rotatably assorted by articulated shaft to be connected in four upper grooves, and the lower end of four upper articulated jibs passes through articulated shaft
It is rotatably assorted and is connected to the middle-end of four lower articulated jibs, the lower end of four lower articulated jibs passes through articulated shaft respectively and is rotatably assorted connection
In four lower grooves on annulus seat;The annulus seat, which is rotatably assorted, is connected to the lower end of rotation screw rod, and annulus seat is located at interior
It between threaded sleeve and tapered bur soil head, rotates and is fixedly connected with two stop collars on screw rod, two stop collar difference blocks are in circle
The upper and lower ends of ring seat.
The lower end of the upper articulated jib is equipped with rotation slot, and the upper end of lower articulated jib, which is rotatably assorted, to be connected in rotation slot.
The fixed bracket institution includes L bracket, reinforcing rib, bolt plate and cylindrical shaft;The cross of the L bracket
Plate is fixedly connected on fixed pedestal, and the riser of L bracket is fixedly connected on bolt plate, and bolt plate passes through bolt
It is fixedly connected on buried pedestal;The transverse slat of the L bracket and the junction of riser are equipped with L shape through slot;The cylindrical shaft
It is fixedly connected in L shape through slot;The upper and lower ends of the reinforcing rib are respectively fixedly connected on the transverse slat and riser of L bracket.
The movable support mechanism includes upper pedestal plate, short axle, movable support ontology and traveling wheel;The upper pedestal plate
Inner end is fixedly connected on the upper end of passive rack gear;The upper end of the movable support ontology is rotatably assorted by short axle is connected to upper axis
The outer end of frame plate;The movable support ontology is equipped with flute profile slide opening, and movable support ontology is slidably matched company by flute profile slide opening
It connects on cylindrical shaft;The lower end of the movable support ontology, which is rotatably assorted, connects traveling wheel;The wheel face of the traveling wheel with it is buried
The top surface of formula pedestal is tangent.
The buried pedestal is staged circular ring structure.
The invention has the benefit that the small-sized adjustable 5G signal transmitting tower of one kind of the invention, can effectively solve existing
The problem of having signal tower structure single, its height can not being finely adjusted;Inside of the invention, which is equipped with, can pass through base height
Regulating mechanism carries out the lifting base of height adjustment, can be driven by the adjusting of lifting base height and be mounted on lifting base
The height of launching tower ontology on seat;And in the height by base height regulating mechanism to lifting base and launching tower ontology
When being turned up, base height regulating mechanism drives multiple auxiliary positioning mechanisms to be downwardly into ground by multiple gear mechanisms
Under, convenient for enhancing stability of the invention, and when multiple auxiliary positioning mechanisms are downwardly into underground, multiple activities can be driven
The outer end of bracket institution is moved outward, so that support is more firm when whole height of the invention increases.
Detailed description of the invention
Fig. 1 is overall structure diagram one of the invention;
Fig. 2 is overall structure diagram two of the invention;
Fig. 3 is the structural schematic diagram of internal plinth height adjustment mechanism of the present invention;
Fig. 4 is the structural schematic diagram of fixed pedestal inside the present invention;
Fig. 5 is the structural schematic diagram of inner gear mechanism of the present invention;
Fig. 6 is the structural schematic diagram of auxiliary positioning mechanism inside the present invention;
Fig. 7 is the structural schematic diagram of positioned internal inserted link of the present invention;
Fig. 8 is the structural schematic diagram of fixed bracket institution inside the present invention;
Fig. 9 is the structural schematic diagram of internal activity bracket institution of the present invention;
Figure 10 is the structural schematic diagram of buried pedestal inside the present invention.
In figure: launching tower ontology 1;Lifting base 2;Protective fence 3;Base height regulating mechanism 4;Height adjustment change 4-1;
Lead screw 4-2;Limited block 4-3;Lift bracket 4-4;Driving rack 4-5;Fixed pedestal 5;Gear mechanism 6;Gear 6-1;Tooth
Wheel shaft 6-2;Bearing block 6-3;Auxiliary positioning mechanism 7;Passive rack gear 7-1;Transverse frame plate 7-2;Positioning pluging rod 7-3;Screw disk 7-3-
1;Rotate screw rod 7-3-2;Internally threaded sleeve 7-3-3;Upper articulated jib 7-3-4;Lower articulated jib 7-3-5;Annulus seat 7-3-6;Taper
Bore native head 7-3-7;Fixed bracket institution 8;L bracket 8-1;Reinforcing rib 8-2;Bolt plate 8-3;Cylindrical shaft 8-4;Activity branch
Frame mechanism 9;Upper pedestal plate 9-1;Short axle 9-2;Movable support ontology 9-3;Traveling wheel 9-4;Buried pedestal 10.
Specific embodiment
Invention is further described in detail by 1-10 with reference to the accompanying drawing.
Specific embodiment 1:
As Figure 1-10 shows, a kind of small-sized adjustable 5G signal transmitting tower, including it is launching tower ontology 1, lifting base 2, anti-
Guardrail 3, base height regulating mechanism 4, fixed pedestal 5, gear mechanism 6, auxiliary positioning mechanism 7, fixed bracket institution 8, activity
Bracket institution 9 and buried pedestal 10, the launching tower ontology 1 and protective fence 3 are all fixedly connected on lifting base 2;It is described
Protective fence 3 is set in the outside of launching tower ontology 1;The lower end of the lifting base 2 is fixedly connected with base height regulating mechanism 4
Upper end, the lower end of base height regulating mechanism 4 are connected on fixed pedestal 5;The outside of the fixed pedestal 5 is uniformly fixedly connected
The lower end of the upper end of six fixed bracket institutions 8, six fixed bracket institutions 8 is uniformly fixedly connected on the top of buried pedestal 10
On face;There are six the gear mechanism 6 is set, six 6 uniform rings of gear mechanism are on the top surface for being fixedly connected on fixed pedestal 5;
There are six the auxiliary positioning mechanism 7 is set, six auxiliary positioning mechanisms 7 are uniformly slidably connected in the top surface of fixed pedestal 5
On;Six auxiliary positioning mechanisms 7 are located at the outside of six gear mechanisms 6;It nibbles in the outside of the base height regulating mechanism 4
Six gear mechanisms 6 of transmission connection are closed, the outside of six gear mechanisms 6 is connected by meshing transmission with six auxiliary positioning mechanisms 7;Institute
It states there are six movable support mechanism 9 sets, the middle-end of six movable support mechanisms 9 is slidably connected respectively in six fixed brackets
In mechanism 8;The upper end of six movable support mechanisms 9 is respectively fixedly connected in the upper end of six auxiliary positioning mechanisms 7.
The small-sized adjustable 5G signal transmitting tower of one kind of the invention when in use first according to the actual situation will be buried
Then fixed bracket institution 8 is mounted by means of bolts on buried base to underground position to be mounted is needed by the embedment of pedestal 10
On seat 10, the fixation to integral position of the present invention is realized;Launching tower ontology 1 is finally mounted by means of bolts on lifting base
On 2;Inside of the invention is equipped with the lifting base 5 that height adjustment can be carried out by base height regulating mechanism 4, can be with
The height for the launching tower ontology 1 being mounted on lifting base 2 is driven by the adjusting of 2 height of lifting base;And passing through
When the height of lifting base 2 and launching tower ontology 1 is turned up in base height regulating mechanism 4, base height regulating mechanism 4
Multiple auxiliary positioning mechanisms 7 are driven to be downwardly into underground by multiple gear mechanisms 6, convenient for enhancing stability of the invention,
And multiple auxiliary positioning mechanisms 7 can drive the outer end of multiple movable support mechanisms 9 to carry out outward when being downwardly into underground
Movement, so that support is more firm when whole height of the invention increases.
Specific embodiment 2:
As Figure 1-10 shows, the base height regulating mechanism 4 includes height adjustment change 4-1, lead screw 4-2, limited block
4-3, lift bracket 4-4 and driving rack 4-5;The height adjustment change 4-1 is fixedly connected on the top of lead screw 4-2, lead screw
The upper end of 4-2 is rotatably assorted by rolling bearing units is connected to the center of fixed pedestal 5, and height adjustment change 4-1 is located at fixed base
The top of seat 5;The bottom end of the lead screw 4-2 is fixedly connected with limited block 4-3;The center of the lift bracket 4-4 is connected by screw thread
It connects on lead screw 4-2, lift bracket 4-4 is between fixed pedestal 5 and limited block 4-3;The driving rack 4-5 is equipped with six
A, the lower end uniform ring of six driving rack 4-5 is around the outside for being fixedly connected on the top surface lift bracket 4-4, six driving racks
The middle-end of 4-5 is uniformly slidably connected in the interior rectangle sliding slot on fixed pedestal 5, and the upper end of six driving rack 4-5 is equal
Even surround is fixedly connected on the bottom surface of lifting base 2;Tooth on the outside of six driving rack 4-5 is engaged with six gear mechanisms 6
Transmission connection.The base height regulating mechanism 4 when in use, need by the height of lifting base 2 and launching tower ontology 1 into
Row is turned up;It can be adjusted by rotating height adjustment change 4-1, lead screw can be driven when rotating height adjustment change 4-1
4-2 is rotated around own axes, and the position that lead screw 4-2 is contacted with fixed pedestal 5 when lead screw 4-2 is rotated changes, lead screw
The position that 4-2 is contacted with fixed pedestal 5 can drive the distance between lift bracket 4-4 and fixed pedestal 5 to send out when changing
Changing, to drive multiple driving rack 4-5 upward slidings, whens multiple driving rack 4-5 upward slidings, can drive lifting
Pedestal 2 moves upwards, and the height of launching tower ontology 1 can be driven to be turned up when lifting base 2 moves upwards, after adjusting, by
It is connected through a screw thread in lead screw 4-2 and fixed pedestal 5, alloing it, lead screw 4-2 is opposite with the position of fixed pedestal 5 after adjustment
It is fixed.
Specific embodiment 3:
As Figure 1-10 shows, be fixedly connected with two axial baffle rings on the lead screw 4-2, two axial baffle rings respectively with fixation
The top and bottom of pedestal 5 are slidably matched.Axial baffle ring on the lead screw 4-2 can prevent lead screw 4-2 de- with the effect of axial limiting
From fixed pedestal 5.
Specific embodiment 4:
As Figure 1-10 shows, the gear mechanism 6 includes gear 6-1, gear shaft 6-2 and bearing block 6-3;The biography
The inside of tooth engagement transmission connection gear 6-1 on the outside of carry-over bar 4-5, gear 6-1 are matched by gear shaft 6-2 rotation
Conjunction is connected on bearing block 6-3, and bearing block 6-3 is fixedly connected on the top surface of fixed pedestal 5;It is nibbled on the outside of gear 6-1
Close transmission connection auxiliary positioning mechanism 7.When in use, when driving rack 4-5 upward sliding, can be with movable tooth for the gear mechanism 6
Wheel ontology 6-1 is rotated around own axes, and gear 6-1 is rotated by gear shaft 6-2 in bearing block 6-3, gear
Ontology 6-1 can drive auxiliary positioning mechanism 7 to work, and when whole height of the invention is got higher, driving rack 4-5 passes through
Gear 6-1 drives auxiliary positioning mechanism 7 to move downward, and realizes the positioning after whole height of the invention is got higher, is conducive to
Enhance stability of the invention.
Specific embodiment 5:
As Figure 1-10 shows, the auxiliary positioning mechanism 7 includes passive rack gear 7-1, transverse frame plate 7-2 and positioning pluging rod 7-3;
The middle-end of the passive rack gear 7-1 is slidably connected in the outer rectangle sliding slot on fixed pedestal 5, and outer rectangle sliding slot is located at interior
The outside of rectangle sliding slot;The upper end of the passive rack gear 7-1 is fixedly connected with the upper end of movable support mechanism 9;The passive rack gear
The lower end of 7-1 is fixedly connected with one end of transverse frame plate 7-2;The positioning pluging rod 7-3 is fixedly connected on the other end of transverse frame plate 7-2.
When in use, it is passive to be driven by gear 6-1 when driving rack 4-5 is moved upwards for the auxiliary positioning mechanism 7
Rack gear 7-1 is moved downward, and positioning pluging rod 7-3 can be driven to transport downwards by transverse frame plate 7-2 when passive rack gear 7-1 is moved downward
It is dynamic, so that positioning pluging rod 7-3 is inserted into progress auxiliary positioning inside soil and fixes.
Specific embodiment 6:
As Figure 1-10 shows, the positioning pluging rod 7-3 includes screwing disk 7-3-1, rotation screw rod 7-3-2, internally threaded sleeve
7-3-3, upper articulated jib 7-3-4, lower articulated jib 7-3-5, annulus seat 7-3-6, stop collar and tapered bur soil head 7-3-7;The rotation
The top that disk 7-3-1 is fixedly connected on rotation screw rod 7-3-2 is twisted, the middle-end of rotation screw rod 7-3-2 is threadedly attached in interior spiral shell
In line casing 7-3-3, the lower end of rotation screw rod 7-3-2 is fixedly connected with tapered bur soil head 7-3-7;The internally threaded sleeve 7-3-3
Upper end be fixedly connected on transverse frame plate 7-2;The lower end of the internally threaded sleeve 7-3-3 is set there are four upper groove;The upper hinge
It connects there are four arm 7-3-4 sets, the upper ends of four upper articulated jib 7-3-4 are rotatably assorted by articulated shaft is connected to four upper grooves
Interior, the lower end of four upper articulated jib 7-3-4 is rotatably assorted by articulated shaft is connected to the middle-end of four lower articulated jib 7-3-5, and four
The lower end of a lower articulated jib 7-3-5 passes through articulated shaft respectively and is rotatably assorted in four lower grooves being connected on annulus seat 7-3-6;
The annulus seat 7-3-6, which is rotatably assorted, is connected to the lower end of rotation screw rod 7-3-2, and annulus seat 7-3-6 is located at internally threaded sleeve 7-
It between 3-3 and tapered bur soil head 7-3-7, rotates and is fixedly connected with two stop collars on screw rod 7-3-2, two stop collars distinguish block
In the upper and lower ends of annulus seat 7-3-6.The positioning pluging rod 7-3 when in use, when passive rack gear 7-1 pass through transverse frame plate 7-2 band
It is internally threaded sleeve 7-3-3, upper articulated jib 7-3-4 inside positioning pluging rod 7-3, lower hinged when dynamic positioning pluging rod 7-3 is moved downward
Arm 7-3-5, annulus seat 7-3-6, stop collar and tapered bur soil head 7-3-7 are inserted into inside soil, and then rotation screws disk 7-3-1
Carry out hook positioning;Rotation can drive rotation screw rod 7-3-2 to be rotated around own axes when screwing disk 7-3-1, rotate spiral shell
The position of bar 7-3-2 rotation Shi Qiyu internally threaded sleeve 7-3-3 contact changes, and rotation screw rod 7-3-2 can drive annulus
Seat 7-3-6 and internally threaded sleeve 7-3-3 changes at a distance from lower end, and then drives upper articulated jib 7-3-4 and lower articulated jib 7-
The shape that fluking type is formed between 3-5, as shown in fig. 7, can pass through upper articulated jib 7-3-4's and lower articulated jib 7-3-5 at this time
Positioning pluging rod 7-3 fastening hook nail inside soil, is rotated backward and screws disk 7-3-1 and can then pack up articulated jib 7-3- by cooperation
4 and lower articulated jib 7-3-5 so that upper articulated jib 7-3-4 and lower articulated jib 7-3-5 is in same fore-and-aft plane, convenient for storage or
Convenient for being extracted out from soil.
Specific embodiment 7:
As Figure 1-10 shows, the lower end of the upper articulated jib 7-3-4 is equipped with rotation slot, and the upper end of lower articulated jib 7-3-5 turns
It is dynamic to be cooperatively connected in rotation slot.
Specific embodiment 8:
As Figure 1-10 shows, the fixed bracket institution 8 includes L bracket 8-1, reinforcing rib 8-2, bolt plate 8-3
With cylindrical shaft 8-4;The transverse slat of the L bracket 8-1 is fixedly connected on fixed pedestal 5, and the riser of L bracket 8-1 is fixed to be connected
It connects on bolt plate 8-3, bolt plate 8-3 is bolted to connection on buried pedestal 10;The L bracket
The transverse slat of 8-1 and the junction of riser are equipped with L shape through slot;The cylindrical shaft 8-4 is fixedly connected in L shape through slot;The reinforcement
The upper and lower ends of muscle 8-2 are respectively fixedly connected on the transverse slat and riser of L bracket 8-1.The fixed bracket institution 8 is using
When, bolt plate 8-3 and buried pedestal 10 can be fastenedly connected by bolt, be realized whole to fixed bracket institution 8
Fixed installation, reinforcing rib 8-2 can play reinforcement structure to entirety of the invention, and firm effect, cylindrical shaft 8-4 is for living
Dynamic bracket institution 9 carries out guide and limit during the motion.
Specific embodiment 9:
As Figure 1-10 shows, the movable support mechanism 9 includes upper pedestal plate 9-1, short axle 9-2, movable support ontology 9-3
With traveling wheel 9-4;The inner end of the upper pedestal plate 9-1 is fixedly connected on the upper end of passive rack gear 7-1;The movable support ontology
The upper end of 9-3 is rotatably assorted by short axle 9-2 is connected to the outer end of upper pedestal plate 9-1;The movable support ontology 9-3 is equipped with
Flute profile slide opening, movable support ontology 9-3 are slidably connected on cylindrical shaft 8-4 by flute profile slide opening;The movable support sheet
The lower end of body 9-3, which is rotatably assorted, connects traveling wheel 9-4;The wheel face of the traveling wheel 9-4 and the top surface of buried pedestal 10 are tangent.
When in use, when passive rack gear 7-1 is moved downward, the upper end of passive rack gear 7-1 can be by upper for the movable support mechanism 9
Pedestal plate 9-1 and short axle 9-2 drives movable support ontology 9-3 to slide on cylindrical shaft 8-4, and cylindrical shaft 8-4 is to movable support sheet
Body 9-3 plays the role of guide and limit, and the lower end of movable support ontology 9-3 is moved outward by traveling wheel 9-4, expanded
Bearing area improves the stability of support, topples over when preventing entirety of the invention by external force;The traveling wheel 9-4's sets
It sets, convenient for improving the convenience that the lower end of movable support ontology 9-3 is moved outward.
Specific embodiment ten
As Figure 1-10 shows, the buried pedestal 10 is staged circular ring structure.The whole embedment of buried pedestal 10
To ground, the top surface of buried pedestal 10 is coplanar with ground.
The operation principle of the present invention is that: the small-sized adjustable 5G signal transmitting tower of one kind of the invention, when in use, root first
According to actual conditions by the embedment of buried pedestal 10 to underground position to be mounted is needed, fixed bracket institution 8 is then passed through into bolt
It is fixedly mounted on buried pedestal 10, realizes the fixation to integral position of the present invention;Launching tower ontology 1 is finally passed through into bolt
It is fixedly mounted on lifting base 2;Inside of the invention, which is equipped with, can carry out height tune by base height regulating mechanism 4
The lifting base 5 of section can drive the launching tower sheet being mounted on lifting base 2 by the adjusting of 2 height of lifting base
The height of body 1;And it is turned up by height of the base height regulating mechanism 4 to lifting base 2 and launching tower ontology 1
When, base height regulating mechanism 4 drives multiple auxiliary positioning mechanisms 7 to be downwardly into underground by multiple gear mechanisms 6, is convenient for
Enhance stability of the invention, and when multiple auxiliary positioning mechanisms 7 are downwardly into underground, multiple movable support machines can be driven
The outer end of structure 9 is moved outward, so that support is more firm when whole height of the invention increases.
Certainly, above description is not limitation of the present invention, and the present invention is also not limited to the example above, the art
The variations, modifications, additions or substitutions that those of ordinary skill is made within the essential scope of the present invention also belong to guarantor of the invention
Protect range.