CN112933336B

CN112933336B - Anti-deformation implantation structure for medical remaining needle silica gel and use method

Info

Publication number: CN112933336B
Application number: CN202110118883.6A
Authority: CN
Inventors: 邓新苗; 邹德峰; 朱香超; 丁颖杰
Original assignee: Suzhou Meiweier Medical Technology Co ltd
Current assignee: Hefei Zhongbin Precision Machinery Co ltd
Priority date: 2021-01-28
Filing date: 2021-01-28
Publication date: 2022-11-04
Anticipated expiration: 2041-01-28
Also published as: CN112933336A

Abstract

The invention discloses an anti-deformation medical indwelling needle silica gel imbedding structure in the technical field of indwelling needles, which comprises a box body, wherein four groups of screw rods are connected to the top end face of the box body in a bearing mode, top plates connected with the four groups of screw rods in a bearing mode are arranged on the top end faces of the top plates, four groups of transmission mechanisms are arranged on the top end faces of the top plates, threaded sleeves connected in a threaded mode are sleeved on the outer walls of the four groups of screw rods, a movable plate is fixedly connected among the four groups of threaded sleeves, a limiting rod is fixedly connected to the center of the bottom end face of the movable plate, a first limiting round block is sleeved on the outer wall of the limiting rod, a first placing round block is fixedly connected to the bottom end face of the first limiting round block, a limiting pipeline communicated with an inner cavity is fixedly connected to the top end face of the box body, a second limiting round block is sleeved on the outer wall of the limiting rod, and a second placing round block is fixedly connected to the top end face of the second limiting round block.

Description

Anti-deformation implantation structure for medical remaining needle silica gel and use method

Technical Field

The invention relates to the technical field of indwelling needles, in particular to an anti-deformation implanting structure for medical indwelling needle silica gel and a using method thereof.

Background

The use of remaining needle can reduce the misery that the infant caused because of relapse venipuncture and the fear of making a needle, alleviate the headings's anxiety, the clinical medicine of being convenient for, urgent, critical patient's rescue is used medicine, alleviate nurse's work load, it is painful to reduce the infant, therefore the vein is kept somewhere the needle and is being used widely in clinic, in the face of this special colony of infant, the length of vein is kept somewhere needle and the comfort of infant becomes nurse and the headings's problem of paying attention to, also is the prerequisite of sign and popularization that the needle of keeping somewhere was used successfully.

In order to facilitate use, the indwelling needle is generally provided with an indwelling needle body for placing a catheter, a rivet and a silicone tube, wherein the indwelling needle body is internally provided with the indwelling needle and the rivet and the silicone tube, the rivet and the silicone tube are arranged at the rear end of the indwelling needle catheter, the silicone tube placing process on the market at present can only process a single product at one time when processing is carried out, the processing efficiency is low, and the silicone tube is easy to deform when processing is carried out, so that the processing quality and efficiency are greatly influenced.

Disclosure of Invention

The invention aims to provide an anti-deformation silica gel embedding structure for a medical indwelling needle, which aims to solve the problem that the silica gel tube of the indwelling needle proposed in the background art is easy to deform during embedding.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a prevent medical needle silica gel of keeping somewhere of deformation with putting into structure, includes the box, the top face bearing of box is connected with four group's screw rods, and per two sets of screw rod bilateral symmetry sets up, four groups the top face of screw rod is provided with the roof that the bearing is connected, the top face of roof is provided with four group drive mechanism, four group respectively four group screw rod drive connects, four groups the outer wall of screw rod cup joints the threaded sleeve that is provided with threaded connection, four groups fixedly connected with fly leaf between the threaded sleeve, the bottom face center fixedly connected with restriction pole of fly leaf, the outer wall of restriction pole cup joints and is provided with restriction circle piece one, be provided with coupling mechanism on the restriction circle piece one, restriction circle piece one can dismantle with the restriction pole through coupling mechanism and is connected, restriction circle piece one is placed to the bottom face fixedly connected with of restriction circle piece one, the restriction pipeline of the top face fixedly connected with inner chamber intercommunication of box, the restriction pole stretches into the box inner chamber through the restriction pipeline, the outer wall of restriction pipeline cup joints and is provided with restriction circle piece two, the both sides end fixedly connected with the fixed sleeve, two sets of restriction circle piece are provided with the dead lever in the both sides end fixedly connected with the restriction circle piece respectively.

Preferably, the first round block placing device comprises a plurality of groups of first placing holes and a plurality of first mounting holes, the first round block placing device is mounted on the outer wall of the limiting rod through the first mounting holes, and a plurality of groups of reinforcing mechanisms matched with the first placing holes in number are arranged on the outer ring of the first round block placing device.

Preferably, the placing round block II comprises a plurality of groups of placing holes II and a group of mounting holes II, the placing round block II is mounted on the outer wall of the limiting pipeline through the mounting holes II, a plurality of groups of reinforcing mechanisms matched with the placing holes in number are arranged on the outer ring of the placing round block II, a reinforcing rod is fixedly connected to the placing holes II in each group, and the reinforcing rods are concentric with the placing holes II.

Preferably, the transmission mechanism comprises speed reducers, the output ends of the speed reducers are in transmission connection with the screws, motors in transmission connection are arranged at the receiving ends of each group of speed reducers, four groups of bases are fixedly connected to the bottom end face of the box body, every two groups of bases are arranged in bilateral symmetry, anti-skid pads are fixedly connected to the bottom end faces of the four groups of bases, and corrugations are arranged on the bottom end faces of the anti-skid pads.

Preferably, the connecting mechanism comprises a connecting rod, the connecting rod penetrates through the first limiting round block and the right side of the first limiting round block, the left end face of the connecting rod is fixedly connected with a connecting block, and the left end face of the connecting block is fixedly connected with a pull ring.

Preferably, the reinforcing mechanism comprises a reinforcing rod, the reinforcing rod penetrates through the second round block placing hole and is in threaded connection with the second round block placing hole, the top end face of the reinforcing rod is fixedly connected with a shifting piece, and the bottom end face of the reinforcing rod is fixedly connected with a rubber protection pad.

Preferably, the front end face of the box body is provided with a rectangular opening, a maintenance door connected through a hinge is arranged at the rectangular opening, the front end face of the box body is provided with a controller, the controller is fixedly connected with the box body, and the controller is electrically connected with the four groups of motors.

S1: before putting into work, will keep somewhere the needle body and place placing hole one of placing the disk one, later drive the anchor strut through strengthening mechanism's plectrum and rotate, then the anchor strut is to placing hole internal motion, strengthens the protection through the rubber protection pad and appears warping to keeping somewhere the needle body, later work more than the repetition is placed the silicone tube in mounting hole two, and every group silicone tube can prevent to appear warping because the restriction of anchor strut simultaneously.

S2: after placing needle body, silicone tube and placing the completion, will place restriction cylinder one on the cylinder one and place on the restriction pole, later insert restriction cylinder one, restriction pole to the right side of restriction cylinder one through coupling mechanism's connecting rod, will place restriction cylinder two on the cylinder two and place on the restriction pipeline, later will place cylinder two through the cooperation between fixed sleeving, restriction sleeve and the dead lever and install on box top face.

S3: placing the circle piece one, after placing the installation of circle piece two, through four group motor work of controller control, drive four group speed reducer work then, drive the screw rod rotation then, through the cooperation between screw rod and the screw sleeve pipe, drive the fly leaf decline, drive then and place circle piece one and place circle piece two and remove towards, and when the fly leaf descends, the restriction pole stretches into during the restriction pipeline, can improve the stability of putting into work then, place circle piece one, can accomplish when placing the contact of circle piece two and put into work.

Compared with the prior art, the invention has the beneficial effects that:

1. through the round block one of placing that sets up can conveniently keep somewhere the needle body to the multiunit and place, the round block two of placing that sets up can conveniently place multiunit silicone tube, then can effectual disposable processing multiunit, improved the efficiency of processing greatly.

2. The restriction pole of setting and the cooperation of restriction pipeline, placing the disk one, place the disk two when descending, can effectual stability holding, then can effectually place the deformation phenomenon that appears, improved quality and efficiency when putting into greatly.

3. The drive mechanism who sets up can effectually drive the screw rod and rotate, through the cooperation between screw rod and the threaded sleeve pipe, can drive the fly leaf decline then, can effectually conveniently put into work then, and the coupling mechanism who sets up can conveniently restrict a round piece and dismantle, then can conveniently change different restriction round pieces rapidly, then can effectual improvement add man-hour efficiency.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic diagram of the controller connection according to the present invention;

FIG. 3 is a schematic view of a placement circle of the present invention;

FIG. 4 is a schematic view of a second placement module of the present invention;

FIG. 5 is a schematic view of the connecting mechanism of the present invention;

FIG. 6 is a schematic view of a reinforcement mechanism of the present invention.

In the figure: 1. a non-slip mat; 2. a base; 3. a box body; 4. a screw; 5. a threaded bushing; 6. a top plate; 7. a speed reducer; 8. a motor; 9. limiting the round block I; 10. placing a first round block; 101. placing the first hole; 102. a first mounting hole; 11. a restraining bar; 12. placing a second round block; 121. placing a second hole; 122. a second mounting hole; 123. a reinforcing bar; 13. fixing the sleeve; 14. a second limiting round block; 15. a restraining sleeve; 16. fixing the rod; 17. a movable plate; 18. maintaining the door; 19. a controller; 20. a restricting conduit; 21. a connecting mechanism; 211. a pull ring; 212. connecting blocks; 213. a connecting rod; 22. a reinforcement mechanism; 221. a shifting sheet; 222. a reinforcing rod; 223. a rubber protective pad.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

Example (b):

referring to fig. 1-6, the present invention provides a technical solution: the utility model provides a prevent medical needle silica gel of keeping somewhere of deformation with putting into structure, please refer to fig. 1, including box 3, the top end face bearing of box 3 is connected with four groups of screw rods 4, every two sets of screw rods 4 bilateral symmetry sets up, the top end face of four groups of screw rods 4 is provided with roof 6 that the bearing is connected, the top end face of roof 6 is provided with four groups of drive mechanism, four groups of drive mechanism are four groups of screw rod 4 transmission connection respectively, the outer wall cup joint of four groups of screw rods 4 is provided with threaded connection's threaded sleeve 5, fixedly connected with fly leaf 17 between four groups of threaded sleeve 5, can effectually drive screw rod 4 and rotate through the drive mechanism who sets up, through the cooperation between screw rod 4 and the threaded sleeve 5, can effectually drive fly leaf 17 and descend, can conveniently carry out the work of putting into then.

Please refer to fig. 1 and 2, a limiting rod 11 is fixedly connected to the center of the bottom end surface of the movable plate 17, a first limiting round block 9 is sleeved on the outer wall of the limiting rod 11, a connecting mechanism 21 is arranged on the first limiting round block 9, the first limiting round block 9 is detachably connected to the limiting rod 11 through the connecting mechanism 21, a first limiting round block 10 is placed on the bottom end surface of the first limiting round block 9, the first limiting round block 9 can be effectively fixed on the limiting rod 11 through the connecting mechanism 21, and then the stability of the placing work can be improved, and the first limiting round block 9 can be conveniently detached through the connecting mechanism 21, and then the first limiting round block 10 can be conveniently detached, a set of work can be conveniently performed after the placing work is completed, and then the efficiency of the placing work can be improved.

Referring to fig. 1 and 2, the top end surface of the box body 3 is fixedly connected with a limiting pipeline 20 with an inner cavity communicated with the inner cavity, the limiting rod 11 extends into the inner cavity of the box body 3 through the limiting pipeline 20, and the stability of the placing operation can be effectively improved through the matching between the limiting rod 11 and the limiting pipeline 20, so that the deformation phenomenon can be prevented.

Please refer to fig. 1 and fig. 2, the outer wall of the limiting pipeline 20 is sleeved with a limiting round block two 14, two side ends of the limiting round block two 14 are fixedly connected with fixing sleeves 13, two side ends of the limiting pipeline 20 are provided with fixing rods 16, two groups of fixing rods 16 are fixedly connected with the box body 3, two groups of fixing sleeves 13 are respectively sleeved in the fixing rods 16, the top end face of each group of fixing rods 16 is provided with a limiting sleeve 15 in threaded connection, the top end face of the limiting round block two 14 is fixedly connected with a placing round block two 12, through the cooperation between the fixing rods 16 and the fixing sleeves 13, the limiting round block two 14 can be effectively and conveniently detached, after a group of placing work is completed, the next group can be conveniently replaced, then the efficiency of the placing work can be improved, and the stability of the fixing sleeves 13 can be effectively improved by the limiting sleeve 15.

Please refer to fig. 3, place a round piece 10 including the multiunit place hole 101 and a set of mounting hole 102, place a round piece 10 and install the outer wall at restriction pole 11 through mounting hole 102, the outer loop of placing a round piece 10 is provided with the reinforcing mechanism 22 that the multiunit matches with the hole 101 quantity of placing, place hole 101 through the multiunit that sets up and can make things convenient for the multiunit to keep somewhere the needle body and place, then can effectually once carry out multiunit processing, then can effectual improvement processing efficiency, and a mounting hole 102 that sets up can conveniently place a round piece 10 and install, and after keeping somewhere the needle body and placing the completion, can effectual improvement needle body's stability through keeping somewhere reinforcing mechanism 22, then can effectually prevent to appear deformation when putting into.

Please refer to fig. 4, place two 12 of the round blocks including the multiunit place two 121 of the holes and a set of mounting hole two 122, place two 12 of the round blocks and install the outer wall at restriction pipeline 20 through two 122 of the mounting hole, the outer loop of placing two 12 of the round blocks is provided with the reinforcing mechanism 22 that the multiunit matches with the number of placing two 121 of the holes, fixedly connected with stiffener 123 in two 121 of the holes are placed to every group, stiffener 123 is concentric with placing two 121 of the holes, place two 121 of the holes through the multiunit that sets up and can conveniently place the multiunit silicone tube, then can once process the multiunit, the efficiency of processing is greatly improved, and place the stiffener 123 that sets up in two 121 of the holes and can effectually restrict the silicone tube, then can effectually improve the hardness of silicone tube, then can effectually place the deformation when putting, and the reinforcing structure 22 that sets up can effectually increase the stability of silicone tube.

Referring to fig. 1, the transmission mechanism includes speed reducers 7, output ends of the speed reducers 7 are in transmission connection with the screws 4, a motor 8 in transmission connection is arranged at a receiving end of each group of speed reducers 7, the motor 8 is a servo motor, the screws 4 can be conveniently driven to rotate by the motor 8, and the speed reducers 7 can reduce the rotating speed, so that the rotating speed of the screws 4 can be reduced, and the stability of the screw inserting operation can be improved.

Referring to fig. 1, four sets of bases 2 are fixedly connected to a bottom end surface of a box body 3, each base 2 is arranged in bilateral symmetry, anti-slip pads 1 are fixedly connected to bottom end surfaces of the four sets of bases 2, and corrugations are arranged on the bottom end surfaces of the anti-slip pads 1, so that overall stability can be effectively improved through the bases 2, and slippage is prevented.

Please refer to fig. 5, the connection mechanism 21 includes a connection rod 213, the connection rod 213 runs through the first restriction round block 9, the restriction rod 11 is connected to the right side of the first restriction round block 9, the left end face of the connection rod 213 is fixedly connected with the connection block 212, the left end face of the connection block 212 is fixedly connected with the pull ring 211, the connection rod 213 can be conveniently pulled out through the pull ring 211, and then the operation of the worker can be facilitated, the first restriction round block 9 can be effectively reinforced through the connection rod 213, the restriction rod 11 can be reinforced, and then the stability of the work putting-in process can be increased.

Please refer to fig. 6, the reinforcing mechanism 22 includes a reinforcing rod 222, the reinforcing rod 222 penetrates through the second round block 12 to the second placing hole 121, the reinforcing rod 222 is in threaded connection with the second round block 12, the top end face of the reinforcing rod 222 is fixedly connected with a shifting piece 221, the bottom end face of the reinforcing rod 222 is fixedly connected with a rubber protection pad 223, when the indwelling needle body or the silicone tube is reinforced, the reinforcing rod 222 can be driven to rotate through the shifting piece 221, through the threaded fit between the reinforcing rod 222 and the first round block 10 (the second round block 12 is placed), the rubber protection pad 223 is driven to move towards the first round block 10 (the second round block 12 is placed), and then the indwelling needle body or the silicone tube can be limited and reinforced, and then the stability of placing operation can be improved, and then the deformation phenomenon can be effectively prevented.

Referring to fig. 1, a rectangular opening is formed in a front end surface of the box 3, a maintenance door 18 connected by hinges is disposed at the rectangular opening, and a maintenance tool or other equipment can be conveniently placed in the box 3 through the maintenance door 18.

Referring to fig. 1, a controller 19 is disposed on a front end surface of the box 3, the controller 19 is fixedly connected to the box 3, the controller 19 is electrically connected to the four sets of motors 8, and the controller 19 can conveniently perform centralized control on the whole, so as to improve the embedding efficiency.

An anti-deformation silica gel imbedding structure of a medical indwelling needle comprises the following steps,

s1: before the placing operation is carried out, the remaining needle body is placed in the first placing hole 101 for placing the round block I10, then the plectrum 221 of the reinforcing mechanism 22 drives the reinforcing rod 222 to rotate, then the reinforcing rod 222 moves towards the first placing hole 101, the rubber protective pad 223 is used for reinforcing and protecting the remaining needle body to deform, then the above operations are repeated, the silicone tube is placed in the second mounting hole 122, and meanwhile deformation of each group of silicone tubes can be prevented due to the limitation of the reinforcing rod 123.

S2: after the needle body and the silicone tube are placed, the first limiting round block 9 on the first placing round block 10 is placed on the limiting rod 11, then the first limiting round block 9 and the limiting rod 11 are inserted into the right side of the first limiting round block 9 through the connecting rod 213 of the connecting mechanism 21, the second limiting round block 14 on the second placing round block 12 is placed on the limiting pipeline 20, and then the second placing round block 12 is installed on the top end face of the box body 3 through the matching among the fixing sleeve 13, the limiting sleeve 15 and the fixing rod 16.

S3: placing the first round block 10, place two 12 installation of round block and accomplish afterwards, control four group motors 8 work through controller 19, then drive four group speed reducer 7 work of group, then drive screw rod 4 and rotate, through the cooperation between screw rod 4 and the threaded sleeve 5, drive fly leaf 17 and descend, then drive and place a 10 orientation of round block and place two 12 removals of round block, and when fly leaf 17 descends, the gag lever post 11 stretches into in the restriction pipeline 20, then can improve the stability of putting into work, place a 10, can accomplish when placing two 12 contacts of round block and put into work.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a medical needle silica gel of keeping somewhere of preventing deformation is with putting into structure, includes box (3), its characterized in that: the top end face of the box body (3) is in bearing connection with four groups of screw rods (4), every two groups of screw rods (4) are arranged in a bilateral symmetry mode, the top end faces of the four groups of screw rods (4) are provided with top plates (6) connected by bearings, the top end faces of the top plates (6) are provided with four groups of transmission mechanisms, the transmission mechanisms are respectively in transmission connection with the four groups of screw rods (4), the outer walls of the four groups of screw rods (4) are sleeved with threaded sleeves (5) provided with threaded connections, the four groups of threaded sleeves (5) are fixedly connected with movable plates (17), the center of the bottom end face of each movable plate (17) is fixedly connected with a limiting rod (11), the outer wall of each limiting rod (11) is sleeved with a first limiting round block (9), a connecting mechanism (21) is arranged on the first limiting round block (9), the first limiting round block (9) is detachably connected with the limiting rod (11) through the connecting mechanism (21), the bottom end face of the first limiting round block (9) is fixedly connected with a first placing round block (10), the top end face of the box body (3) is fixedly connected with a limiting pipeline (20) communicated with an inner cavity, and the limiting pipe (14) is fixedly connected with two limiting blocks (14), the two sides of the limiting pipeline (20) are provided with fixing rods (16), two groups of fixing rods (16) are fixedly connected with a box body (3), two groups of fixing sleeves (13) are respectively sleeved in the fixing rods (16), the top end face of each group of fixing rods (16) is provided with a limiting sleeve (15) in threaded connection, the top end face of a limiting round block II (14) is fixedly connected with a placing round block II (12), the placing round block I (10) comprises a plurality of groups of placing holes I (101) and a group of mounting holes I (102), the placing round block I (10) is installed on the outer wall of the limiting rod (11) through the mounting holes I (102), the outer ring of the placing round block I (10) is provided with a plurality of groups of reinforcing mechanisms (22) matched with the placing holes I (101 in number, the placing round block II (12) comprises a plurality of groups of placing holes II (121) and a group of mounting holes II (122), the placing round block II (12) is installed on the outer wall of the limiting pipeline (20) through the plurality of groups of fixing holes II (121) matched with the placing holes II (121), and each group of reinforcing mechanisms (121) are connected with the concentric reinforcing rods (121) in number of the placing holes II (123).

2. The anti-deformation silica gel implantation structure of a medical indwelling needle according to claim 1, wherein: the transmission mechanism comprises a speed reducer (7), the output end of the speed reducer (7) is in transmission connection with a screw (4), each group of speed reducer (7) is provided with a motor (8) in transmission connection, the bottom end face of the box body (3) is fixedly connected with four groups of bases (2), every two groups of bases (2) are arranged in a bilateral symmetry mode, the four groups of bases (2) are fixedly connected with anti-skid pads (1), and the bottom end face of the anti-skid pads (1) is provided with corrugations.

3. The anti-deformation silica gel implantation structure of a medical indwelling needle according to claim 1, wherein: coupling mechanism (21) includes connecting rod (213), connecting rod (213) run through restriction circle piece (9), restriction pole (11) to the right side of restriction circle piece (9), the left side terminal surface fixedly connected with connecting block (212) of connecting rod (213), the left side terminal surface fixedly connected with pull ring (211) of connecting block (212).

4. The anti-deformation silica gel implantation structure of a medical indwelling needle according to claim 3, wherein: the reinforcing mechanism (22) comprises a reinforcing rod (222), the reinforcing rod (222) penetrates through the second placement round block (12) to the second placement hole (121), the reinforcing rod (222) is in threaded connection with the second placement round block (12), the top end face of the reinforcing rod (222) is fixedly connected with a shifting piece (221), and the bottom end face of the reinforcing rod (222) is fixedly connected with a rubber protection pad (223).

5. The anti-deformation implanting structure for silica gel of medical indwelling needle according to claim 1, wherein: the motor box is characterized in that a rectangular opening is formed in the front end face of the box body (3), a maintenance door (18) connected through a hinge is arranged at the rectangular opening, a controller (19) is arranged on the front end face of the box body (3), the controller (19) is fixedly connected with the box body (3), and the controller (19) is electrically connected with the four sets of motors (8).

6. The use method of the silica gel insertion structure for the anti-deformation medical indwelling needle according to any one of claims 1 to 5, wherein: the method comprises the following steps:

s1: before the indwelling needle is placed in the placing hole I (101) of the placing round block I (10), the reinforcing rod (222) is driven to rotate through the shifting piece (221) of the reinforcing mechanism (22), then the reinforcing rod (222) moves towards the placing hole I (101), the indwelling needle body is reinforced and protected through the rubber protective pad (223) to deform, then the operations are repeated, the silicone tubes are placed in the mounting holes II (122), and meanwhile, the silicone tubes in each group can be prevented from deforming due to the limitation of the reinforcing rod (123);

s2: after the needle body and the silicone tube are placed, the first limiting round block (9) on the first placing round block (10) is placed on the limiting rod (11), then the first limiting round block (9) and the limiting rod (11) are inserted into the right side of the first limiting round block (9) through a connecting rod (213) of a connecting mechanism (21), the second limiting round block (14) on the second placing round block (12) is placed on the limiting pipeline (20), and then the second placing round block (12) is installed on the top end face of the box body (3) through matching among the fixing sleeve (13), the limiting sleeve (15) and the fixing rod (16);

s3: placing a round block I (10), placing a round block II (12) and installing, then, controlling four groups of motors (8) to work through a controller (19), then driving four groups of speed reducers (7) to work, then driving a screw rod (4) to rotate, through the cooperation between the screw rod (4) and a threaded sleeve (5), driving a movable plate (17) to descend, then driving the placing of the round block I (10) to move towards the placing of the round block II (12), and when the movable plate (17) descends, a limiting rod (11) stretches into a limiting pipeline (20), then the stability of the placing work can be improved, the placing of the round block I (10) can be completed when the placing of the round block II (12) is contacted.