CN213044482U - Greening transplanting device - Google Patents

Abstract

The utility model belongs to the technical field of the technique of afforestation transplantation and specifically relates to a device is transplanted in afforestation, it includes four telescopic links and is used for hooping the solid fixed ring of nursery stock, the telescopic link is including supporting sub-pole and adjusting sub-pole, the one end of adjusting sub-pole is installed on solid fixed ring, the other end of adjusting sub-pole is equipped with the slot, the length direction of slot with the length direction of adjusting sub-pole is the same, support sub-pole with the slot cooperation of sliding, adjust sub-pole with support sub-pole through a fixed subassembly fixed connection. This application has the effect that improves the adjustability of afforestation transplantation device.

Description

Greening transplanting device

Technical Field

The application relates to the technical field of greening transplantation, in particular to a greening transplantation device.

Background

At present, when greening construction is carried out on two sides of an urban road, tree transplantation is a very important greening means, and a transplanting device is usually required to fix trees after the tree transplantation so as to avoid influence on the growth of plant roots due to shaking and loosening of trunks caused by natural factors.

As shown in fig. 1, the existing greening transplanting device comprises four fixing rods 1 and two arc-shaped connecting pieces 2, the two arc-shaped connecting pieces 2 are fixedly connected through bolts to form a fixing ring for hooping the trunk of a seedling 3, the outer arc surface of the fixing ring is hinged to one end of each fixing rod 1, and the other end of each fixing rod 1 is supported on the ground.

In view of the above-mentioned related technologies, when a worker uses the greening transplanting device, when the ground near the nursery stock is uneven, for example, when the nursery stock encounters a large area of concave ground, because the length of the supporting rod is fixed, the supporting rod correspondingly located on the concave ground is difficult to support on the ground or the lower end of the supporting rod is suspended, which easily causes unstable supporting of the nursery stock by the supporting rod.

SUMMERY OF THE UTILITY MODEL

In order to improve the adjustability of afforestation transplantation device, this application provides an afforestation transplantation device.

The application provides a afforestation transplantation device adopts following technical scheme:

the utility model provides a device is transplanted in afforestation, includes four telescopic links and is used for hooping the solid fixed ring of nursery stock, the telescopic link is including supporting sub-pole and adjusting sub-pole, the one end of adjusting sub-pole is installed on solid fixed ring, the other end of adjusting sub-pole is equipped with the slot, the length direction of slot with the length direction of adjusting sub-pole is the same, support sub-pole with the slot cooperation of sliding, adjust sub-pole with support sub-pole through a fixed subassembly fixed connection.

Through adopting above-mentioned technical scheme, the staff is earlier on the trunk of fixed hoop at the nursery stock, then through the length of the regulation telescopic link that slides that supports sub-pole and slot, when supporting sub-pole and supporting subaerial time, the subassembly is fixed to the reuse will support sub-pole and adjust sub-pole fixed connection to it is fixed to support sub-pole relative regulation sub-pole, supports sub-pole this moment and supports in ground, the telescopic link is fixed to the nursery stock with solid fixed ring cooperation, set up like this, be favorable to improving the controllability of afforestation transplantation device.

Preferably, the supporting sub-rod is located the fixed stopper that is provided with of lateral wall of one end in the slot, the stopper with the slot cooperation of sliding, the supporting sub-rod is in the fixed restriction that is equipped with in the inserting end department of slot the stopper breaks away from the spacing platform of slot, the stopper can with spacing platform butt.

Through adopting above-mentioned technical scheme, when the longest length was adjusted to the telescopic link, stopper and spacing platform butt to the sub-pole of prevention support breaks away from the slot on adjusting the sub-pole, is favorable to supporting the stability that sub-pole and regulation are connected.

Preferably, the fixing component comprises an inserting rod, the wall of the slot penetrates through the side wall of the adjusting sub-rod to be provided with a through hole, the inserting rod is in sliding fit with the through hole, one end of the inserting rod extends out of the adjusting sub-rod, and the other end of the inserting rod penetrates through the through hole and extends into the slot; the side wall of the supporting sub-rod is correspondingly provided with a plurality of positioning holes, the positioning holes are arranged along the length direction of the supporting sub-rod, and the inserting rod can be inserted into the positioning holes when the positioning holes are aligned with the through holes.

Through adopting above-mentioned technical scheme, during the regulation, staff's pulling inserted bar makes the inserted bar support the one end retraction through-hole of sub-pole towards, and the staff promotes to support sub-pole or pulling this moment and supports sub-pole to the whole length of telescopic link is adjusted, transfers the back, supports one of them locating hole on the sub-pole and aims at with the through-hole, and the staff promotes the inserted bar this moment, makes the inserted bar peg graft with the locating hole, thereby will support sub-pole fixed, it is fixed with the realization to support sub-pole relative regulation sub-pole.

Preferably, the inserted bar stretches out the fixed plate that is provided with of the outer one end of regulation sub-pole lateral wall, the fixed plate orientation regulation sub-pole lateral wall one side is provided with the spring, the spring with the inserted bar cup joints, just spring one end with fixed plate fixed connection, the other end of spring with the lateral wall fixed connection of regulation sub-pole, work as the spring is in natural state, just during the locating hole aims at the through-hole, the inserted bar is kept away from the one end of fixed plate with the locating hole is pegged graft.

Through adopting above-mentioned technical scheme, the setting of spring is favorable to improving the stability of inserted bar and locating hole grafting.

Preferably, a sleeve is arranged on one side, facing the adjusting sub-rod, of the fixing plate, one end of the sleeve is fixedly connected with the fixing plate, and when the spring is in a natural state, the sleeve is abutted to the outer side wall of the adjusting sub-rod and forms a closed cavity for containing the spring and the inserted rod.

Through adopting above-mentioned technical scheme, under the natural state of spring, the sleeve forms a confined cavity that is used for holding spring and inserted bar with the lateral wall butt of adjusting the sub-pole, is favorable to improving the life of spring and inserted bar.

Preferably, the fixed ring comprises two semicircular rings, two fixed blocks are respectively fixed on two sides of the outer wall of each semicircular ring, and the fixed blocks are respectively fixedly connected through bolts.

Through adopting above-mentioned technical scheme, during the installation, the staff presss from both sides two fixed blocks on two semicircle rings on the trunk of nursery stock, and the fixed block on two semicircle rings corresponds mutual butt respectively this moment, and the rethread bolt carries out fixed connection with the fixed block on two semicircle rings, has realized that solid fixed ring cramps the effect on the nursery stock.

Preferably, the outer arc surface of the semicircular ring is provided with a groove, and the grooves of the two semicircular rings are communicated with each other; the one end that the sub-pole of regulation was kept away from support the sub-pole articulates there is the slider, the slider with the recess cooperation of sliding.

Through adopting above-mentioned technical scheme, the setting of slider makes the staff can adjust the position of telescopic link through the slider that slides, has further improved the controllability of afforestation transplantation device.

Preferably, the groove comprises a limiting groove part and a connecting groove part which are communicated with each other, one side of the connecting groove part penetrates through the outer arc surface of the semicircular ring, the other side of the connecting groove part is communicated with one side of the limiting groove part, the width of the limiting groove part is larger than that of the connecting groove part, the sliding block comprises a sliding part and a hinged part, the sliding part of the sliding block is in sliding fit with the limiting groove part of the groove, the hinged part of the sliding block is in sliding fit with the connecting groove part of the groove, and the other part of the hinged part extends out of the side wall of the semicircular ring and is hinged with one end, away from the support sub-rod, of the adjusting sub-rod.

Through adopting above-mentioned technical scheme, spacing slot part and the cooperation setting that slides of sliding part are favorable to improving the stability that the slider slided in the recess.

Preferably, the groove has a wall penetrating the top wall of the semicircular ring to form a positioning groove, the top wall of the semicircular ring is provided with a fastening bolt, the fastening bolt comprises a head and a tail, the tail penetrates the positioning groove and is in threaded connection with the sliding block, and the head is abutted to the top wall of the semicircular ring.

Through adopting above-mentioned technical scheme, when the workman adjusted the angle of telescopic link, through twisting fastening bolt, with slider locking, be favorable to the fixed action to the slider.

Preferably, the supporting sub-rod is hinged to a supporting plate at one end far away from the adjusting sub-rod, and a plurality of inserting nails are fixedly connected to one side, far away from the supporting sub-rod, of the supporting plate.

Through adopting above-mentioned technical scheme, the setting of backup pad and inserted nail can make and insert in the nail inserts soil, is favorable to improving the stability that supports the sub-pole and support the nursery stock.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the greening transplanting device is installed, a worker firstly fixes the two semicircular rings on the trunk of a seedling through bolts and nuts, then rotates the sliding block to drive the adjusting sub-rod and the supporting sub-rod to rotate, and when the rotating belt is at a proper angle, the worker twists the fastening bolts to lock the sliding block to complete the adjustment of the angle of the telescopic rod, so that the improvement of the adjustability of the greening transplanting device is facilitated;

2. staff pulling fixed plate, the fixed plate drives the inserted bar in the one end retraction through-hole that supports the sub-pole, and extension spring, then the staff pulling supports the sub-pole, and will grab ground subassembly and insert in soil, in order to support the sub-pole and fix, and will support one of them locating hole on the sub-pole and aim at with the through-hole, the staff loosens the fixed plate this moment, under the effect of spring, the fixed plate drives the inserted bar and slides towards the direction that supports the sub-pole rapidly, peg graft until inserted bar and locating hole, thereby accomplish the fixed of afforestation transplantation device to the nursery stock, set up like this, the controllability of afforestation transplantation device has further been improved.

Drawings

FIG. 1 is a schematic diagram of a greening transplant apparatus in the prior art.

FIG. 2 is a schematic structural diagram of a greening transplanting device in the present application.

FIG. 3 is a partial sectional view of the semicircular ring and the slider.

Fig. 4 is a structural sectional view of the telescopic rod.

Fig. 5 is an enlarged view of a portion a in fig. 4.

Description of reference numerals: 1. fixing the rod; 2. an arc-shaped connecting piece; 3. nursery stock; 4. a telescopic rod; 41. a support sub-rod; 411. positioning holes; 42. adjusting the sub-rods; 421. a slot; 422. a through hole; 43. a limiting block; 44. a limiting table; 5. inserting a rod; 6. a fixing plate; 7. a spring; 8. a sleeve; 9. a semicircular ring; 91. a fixed block; 92. a groove; 921. a limiting groove part; 922. a connecting groove portion; 93. positioning a groove; 10. a slider; 101. a sliding part; 102. a hinge portion; 11. fastening a bolt; 111. a head portion; 112. a tail portion; 12. a support plate; 13. and inserting the nail.

Detailed Description

The present application is described in further detail below with reference to the attached drawings.

The embodiment of the application discloses device is transplanted in afforestation, refer to fig. 2, including four telescopic links 4 and be used for hooping the solid fixed ring of nursery stock 3, wherein, gu fixed ring includes two semicircle rings 9, thereby two semicircle rings 9 butt each other form solid fixed ring, and the both sides of semicircle ring 9 are fixed with two fixed blocks 91 respectively, when two semicircle rings 9 and will become solid fixed ring, four fixed blocks of one of them semicircle ring 91 respectively with four fixed blocks 91 butt of another semicircle ring 9, then four fixed blocks 91 fixed connection of rethread bolt with mutual butt. The upper end of the telescopic rod 4 is hinged with the fixing ring, and the lower end of the telescopic rod 4 is a supporting end supported on the ground.

Referring to fig. 2 and 3, the outer arc surfaces of the side walls of the two semicircular rings 9 are respectively provided with a groove 92, and when the two semicircular rings 9 are spliced into a fixing ring, the grooves 92 of the two semicircular rings 9 are communicated with each other.

Specifically, the groove 92 includes a limiting groove section 921 and a connecting groove section 922 which are communicated with each other, one side of the connecting groove section 922 penetrates through the outer arc surface of the semicircular ring 9, the other end of the connecting groove section 922 is communicated with one side of the limiting groove section 921, and the width of the limiting groove section 921 is greater than that of the connecting groove section 922; the upper end of the telescopic rod 4 is hinged with a sliding block 10, the sliding block 10 comprises a sliding part 101 and a hinged part 102, the sliding part 101 of the sliding block 10 is in sliding fit with the limiting groove part 921 of the groove 92, the hinged part 102 of the sliding block 10 is in sliding fit with the connecting groove part 922 of the groove 92, and the other part of the hinged part 102 of the sliding block 10 extends out of the side wall of the semicircular ring 9 and is hinged with the upper end of the telescopic rod 4. The arrangement realizes that the upper end of the telescopic rod 4 is hinged and arranged on the fixed ring. Therefore, the position of the telescopic rod 4 relative to the fixing ring can be adjusted, when a large area of concave or convex ground occurs, a worker can adjust the position of the telescopic rod 4 relative to the fixing ring by moving the sliding block 10, and the telescopic rod 4 can avoid the concave part or the convex part of the ground.

Referring to fig. 2 and 3, the groove wall at the position of the limiting groove 921 of the groove 92 penetrates through the top wall of the semicircular ring 9 to provide a positioning groove 93, a fastening bolt 11 is correspondingly arranged outside the top wall of the semicircular ring 9, the fastening bolt 11 comprises a tail portion 112 and a head portion 111, the tail portion 112 of the fastening bolt 11 penetrates through the positioning groove 93 and is in threaded connection with the slider 10, and the head portion 111 of the fastening bolt 11 is abutted against the side wall of the semicircular ring 9. When the staff need slide slider 10, unscrew fastening bolt 11 earlier, make head 111 leave the roof of semicircle ring 9, the staff promotes slider 10 and slides and drive telescopic link 4 and rotate in recess 92 this moment, thereby adjust the angle of telescopic link 4, adjust the completion back, the staff twists fastening bolt 11, make fastening bolt 11's head 111 and semicircle ring 9's roof butt and support tightly, fastening bolt 11's afterbody 112 and slider 10 threaded connection, thereby fix slider 10.

Referring to fig. 4 and 5, the telescopic rod 4 includes a supporting rod 41 and an adjusting rod 42, one end of the adjusting rod 42 is hinged to a portion of the hinge portion 102 of the slider 10 extending out of the side wall of the semicircular ring 9, the other end of the adjusting rod 42 is provided with a slot 421, the length direction of the slot 421 is the same as the length direction of the adjusting rod 42, the slot 421 is provided with an insertion end for inserting the supporting rod 41, the supporting rod 41 is in sliding fit with the slot 421, and the adjusting rod 42 is fixedly connected with the supporting rod 41 through a fixing component.

Referring to fig. 4 and 5, the fixing assembly includes an inserting rod 5, a through hole 422 is formed in a side wall of the adjusting sub-rod 42 penetrating through a wall of the slot 421, the inserting rod 5 is slidably fitted with the through hole 422, one end of the inserting rod 5 extends out of the adjusting sub-rod 41, and the other end of the inserting rod 5 penetrates through the through hole 422 and extends into the slot 5; the side wall of the supporting rod 41 is correspondingly provided with a positioning hole 411 inserted with the insertion rod 5. When the inserting rod 5 is inserted into the positioning hole 411, a part of the inserting rod 5 is located outside the sidewall of the adjusting sub-rod 42, and another part of the inserting rod 5 passes through the through hole 422 and is located in the positioning hole 411. By means of the arrangement, the fixing effect of the fixing component on the supporting sub-rod 41 is achieved.

Specifically, in order to increase the adjustable range of the length of the telescopic rod, the number of the positioning holes 411 is set to be a plurality, and the positioning holes 411 are arranged in a row along the length direction of the supporting sub-rod 41.

More specifically, one end of the inserted link 5 extending out of the side wall of the adjusting sub-link 42 is fixedly connected with a fixing plate 6, the fixing plate 6 is provided with a spring 7 facing the side wall of the adjusting sub-link 42, the spring 7 is sleeved on the inserted link 5, one end of the spring 7 is fixedly connected with the fixing plate 6, and the other end of the spring 7 is fixedly connected with the side wall of the adjusting sub-link 42. When the spring 7 is in a natural state and the positioning hole 411 is aligned with the through hole 422, one end of the insertion rod 5 away from the fixing plate 6 extends into the groove 92 and is inserted into the positioning hole 411. The staff slides towards the direction outside the adjusting sub-rod 42 lateral wall through pulling fixed plate 6 and driving inserted bar 5, make inserted bar 5 break away from locating hole 411, the staff pulling supports sub-rod 41 this moment, make and support sub-rod 41 and recess 92 and slide, thereby adjust the length of telescopic link 4, after finishing adjusting, the staff makes locating hole 411 on supporting sub-rod 41 aim at with through-hole 422, the staff loosens fixed plate 6 this moment, under the effect of spring 7 elasticity, inserted bar 5 slides towards the direction in the recess 92 rapidly, until the tip of inserted bar 5 is pegged graft with locating hole 411. The arrangement of the spring 7 is beneficial to improving the inserting stability of the inserting rod 5 and the positioning hole 411.

More specifically, in order to prolong the service life of the spring 7 and the inserted rod 5, the fixing plate 6 is provided with a sleeve 8 towards one side of the adjusting sub-rod 42, one end of the sleeve 8 is fixedly connected with the fixing plate 6, and when the spring 7 is in a natural state, the other end of the sleeve 8 is abutted against the outer side wall of the adjusting sub-rod 42 and forms a closed cavity for accommodating the spring 7 and the inserted rod 5.

In order to improve the stability of the sliding connection between the supporting rod 41 and the adjusting rod 42, the side wall of one end of the supporting rod 41 in the slot 421 is fixedly connected with a limit block 43, the limit block 43 is flush with the end surface of the supporting rod 41, and the limit block 43 is in sliding fit with the slot 421. The supporting sub-rod 41 is correspondingly and fixedly provided with a limiting table 44 used for limiting the limiting block 43 to be separated from the slot 421 at the inserting end of the slot 421, the limiting table 44 extends from the side wall of the slot 421 to the direction in the slot 421, when the telescopic rod 4 is adjusted to the longest length, the limiting block 43 is abutted against the limiting table 44, so that one end of the supporting sub-rod 41 is kept in the slot 421, the supporting sub-rod 41 is limited to be separated from the slot 421 on the adjusting sub-rod 42, and the stability of sliding fit of the supporting sub-rod 41 and the slot 421 is improved.

Referring to fig. 2, a supporting plate 12 is hinged to one end of the supporting rod 41 contacting with the ground, and a plurality of inserting nails 13 are fixedly connected to one side of the supporting plate 12 away from the supporting rod 41, so that the supporting plate 12 can be rotated to adjust the angle during installation, and the inserting nails 13 are inserted into the ground, thereby improving the supporting stability of the supporting rod 41.

The specific implementation principle is as follows:

during the installation, the staff will hoop two semicircle rings 9 on nursery stock 3's truck and mutual butt earlier, then carry out fixed connection through fixed block 91 on the bolt with two semicircle rings 9, make two semicircle rings 9 fix on nursery stock 3's trunk, then the staff promotes slider 10, make slider 10 drive telescopic link 4 along solid fixed ring's lateral wall horizontal migration, when rotating suitable position, the staff twists fastening bolt 11, make fastening bolt 11's head 111 support the roof of tight semicircle ring 9, and fastening bolt 11's afterbody 112 and slider 19 threaded connection, thereby it is fixed with slider 10.

At this moment, the worker pulls the fixing plate 6 and drives the inserting rod 5 to slide towards the direction far away from the positioning hole 411, when the inserting rod 5 is separated from the positioning hole 411, the worker pulls the supporting sub-rod 41 to enable the supporting sub-rod 41 to slide towards the direction far away from the slot 421 until the supporting sub-rod is contacted with the ground, at this moment, the worker inserts the ground grabbing component 12 into the ground, the positioning hole 411 on the supporting sub-rod 41 is aligned with the through hole 422, then the fixing plate 6 is loosened, under the action of the elastic force of the spring 7, the fixing plate 6 rapidly drives the inserting rod 5 to slide towards the direction in the positioning hole 411 and be inserted into the positioning hole 411, at this moment, the spring 7 restores to a natural state.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. A greening transplanting device is characterized in that: the telescopic seedling planting device comprises four telescopic rods (4) and a fixing ring used for hooping seedlings (3), wherein each telescopic rod (4) comprises a supporting sub-rod (41) and an adjusting sub-rod (42), one end of each adjusting sub-rod (42) is installed on the fixing ring, a slot (421) is formed in the other end of each adjusting sub-rod (42), the length direction of each slot (421) is the same as that of each adjusting sub-rod (42), each supporting sub-rod (41) is matched with the corresponding slot (421) in a sliding mode, and each adjusting sub-rod (42) is fixedly connected with the corresponding supporting sub-rod (41) through a fixing component;

the side wall of one end, located in the slot (421), of the support sub-rod (41) is fixedly provided with a limit block (43), the limit block (43) is in sliding fit with the slot (421), the insertion end of the support sub-rod (41) in the slot (421) is fixedly provided with a limit table (44) used for limiting the limit block (43) to be separated from the slot (421), and the limit block (43) can be abutted against the limit table (44);

the fixing assembly comprises an inserting rod (5), the wall of the slot (421) penetrates through the side wall of the adjusting sub-rod (42) to be provided with a through hole (422), the inserting rod (5) is matched with the through hole (422) in a sliding manner, one end of the inserting rod (5) extends out of the adjusting sub-rod (42), and the other end of the inserting rod (5) penetrates through the through hole (422) and extends into the slot (421); the side wall of the supporting sub-rod (41) is correspondingly provided with a plurality of positioning holes (411), the positioning holes (411) are arranged along the length direction of the supporting sub-rod (41), and when the positioning holes (411) are aligned to the through holes (422), the inserting rod (5) can be inserted into the positioning holes (411).

2. A greening transplantation device as claimed in claim 1, wherein: inserted bar (5) stretch out in the fixed plate (6) that is provided with of the outer one end of regulation sub-pole (42) lateral wall, fixed plate (6) orientation regulation sub-pole (42) lateral wall one side is provided with spring (7), spring (7) with inserted bar (5) cup joint, just spring (7) one end with fixed plate (6) fixed connection, the other end of spring (7) with the lateral wall fixed connection of regulation sub-pole (42), work as spring (7) are in natural state, just locating hole (411) are aimed at during through-hole (422), inserted bar (5) are kept away from the one end of fixed plate (6) with locating hole (411) are pegged graft.

3. A greening transplantation device as claimed in claim 2, wherein: fixed plate (6) orientation regulation son pole (42) one side is provided with sleeve (8), sleeve (8) one end with fixed plate (6) fixed connection, work as when spring (7) are in natural state, sleeve (8) with the lateral wall butt of regulation son pole (42) forms one and is used for the holding spring (7) and the airtight cavity of inserted bar (5).

4. A greening transplantation device as claimed in claim 1, wherein: the fixing ring comprises two semicircular rings (9), two fixing blocks (91) are fixed on two sides of the outer wall of each semicircular ring (9) respectively, and the four semicircular rings (9) are fixedly connected with the fixing blocks (91) respectively through bolts.

5. A green transplantation device as set forth in claim 4, wherein: grooves (92) are formed in the outer arc surfaces of the semicircular rings (9), and the grooves (92) of the two semicircular rings (9) are communicated with each other; the end, far away from the supporting sub-rod (41), of the adjusting sub-rod (42) is hinged to a sliding block (10), and the sliding block (10) is in sliding fit with the groove (92).

6. A green transplantation device as set forth in claim 5, wherein: the groove (92) comprises a limiting groove part (921) and a connecting groove part (922) which are communicated with each other, one side of the connecting groove part (922) penetrates through the outer arc surface of the semicircular ring (9), the other side of the connecting groove part (922) is communicated with one side of the limiting groove part (921), and the width of the limiting groove part (921) is larger than that of the connecting groove part (922), the sliding block (10) comprises a sliding part and a hinged part (102), the sliding part (101) of the sliding block (10) is in sliding fit with the limiting groove part (921) of the groove (92), the hinge part (102) of the slider (10) is matched with the connecting groove part (922) of the groove (92) in a sliding way, the other part of the hinge part (102) extends out of the side wall of the semi-circle ring (9) and is hinged with one end of the adjusting sub-rod (42) far away from the supporting sub-rod (41).

7. A green transplantation device as set forth in claim 6, wherein: the locating groove (93) has been seted up to recess (92) spacing slot part (921) cell wall runs through the roof of semicircle ring (9), the roof of semicircle ring (9) is provided with fastening bolt (11), fastening bolt (11) include head (111) and afterbody (112), afterbody (112) pass locating groove (93) and with slider (10) threaded connection, head (111) with the roof butt of semicircle ring (9).

8. A greening transplantation device as claimed in claim 1, wherein: the one end that supports sub-pole (41) and keep away from adjust sub-pole (42) articulates there is backup pad (12), backup pad (12) are kept away from support one side fixedly connected with a plurality of plug pins (13) of sub-pole (41).

Images