CN113456397A

CN113456397A - Obstetrical department is clinical with adjustable practise midwifery bed convenient to it is clean

Info

Publication number: CN113456397A
Application number: CN202110683726.XA
Authority: CN
Inventors: 赖招娣
Original assignee: Individual
Current assignee: Nanjing Tongliang Technology Co ltd
Priority date: 2021-06-21
Filing date: 2021-06-21
Publication date: 2021-10-01
Anticipated expiration: 2041-06-21
Also published as: CN113456397B

Abstract

The invention relates to an adjustable midwifery bed, in particular to an adjustable midwifery bed that is easy to clean for clinical obstetrics. The technical problem of the present invention is to provide an adjustable midwifery bed that is easy to clean for clinical obstetrics with simple overall structure and operability. Technical solution: an adjustable midwifery bed for obstetric clinical use that is easy to clean, comprising a base, a leaning plate, a first support plate, a second support plate, a bearing mechanism and a fixing mechanism; a base and a bearing mechanism, the top of the base is provided with a bearing mechanism; a first support plate, a first support plate is arranged on one side of the bearing mechanism; a leaning plate, one side of the first support plate is rotatably provided with a leaning plate; a fixing mechanism, a fixing mechanism is arranged at the lower part of one side of the bearing mechanism; the second support The upper part of the fixing mechanism is provided with a second support plate. The present invention achieves the effects of simple overall structure and operability.

Description

Obstetrical department is clinical with adjustable practise midwifery bed convenient to it is clean

Technical Field

The invention relates to an adjustable obstetric table, in particular to an adjustable obstetric table convenient to clean and used for obstetrical department clinic.

Background

In modern life, pregnant women are examined at intervals before the birth of the baby to ensure the healthy baby in the holy transport position, so that the prenatal care is realized, and measures are taken in time when abnormality is found, so that the health of the mother and the child are basically guaranteed.

However, the arrangement of the obstetric table in the prior art is too complex, the medical requirements which are increasingly developed cannot be met, inconvenience is easily caused to medical staff in the operation process, the operability of the existing obstetric table is not strong, certain working difficulty is increased for the medical staff, and the operation effect is influenced.

In view of the above problems in the prior art, there is a need to design an adjustable obstetric table with simple overall structure and operability for obstetrical clinical use.

Disclosure of Invention

In order to overcome the defects of complex structure and poor operability of the prior art, the invention has the technical problems that: the adjustable obstetric table which is simple in integral structure and has operability and is convenient to clean for obstetrical clinical use is provided.

The technical scheme is as follows: an obstetrical department clinical adjustable obstetric table convenient to clean, including: the top of the base is provided with the bearing mechanism; the first supporting plate is arranged on one side of the bearing mechanism; the leaning plate is rotatably arranged on one side of the first supporting plate; the lower part of one side of the bearing mechanism is provided with a fixing mechanism; the upper part of the fixing mechanism is provided with a second supporting plate.

Further, the bearing mechanism comprises: the top of the base is provided with a support column, and the support column is connected with a first support plate; the support columns are symmetrically provided with the handles; the lower part of one side of the leaning plate is symmetrically provided with a first mounting block; the worm is arranged on the first mounting block in a rotating mode; the first protective shell is arranged on one side of the top of the base; the lower part of one side of the supporting column is rotatably provided with a first rotating rod which is rotatably connected with the first protective shell; the middle of one side of the top of the base is rotatably provided with a second rotating rod which is connected with the worm through threads; the bevel gear component is arranged between the second rotating rod and the first rotating rod; the support column is provided with a limiting rod in a sliding mode, and an elastic piece is connected between the limiting rod and the support column.

Further, the fixing mechanism includes: the second protective shell is symmetrically arranged on one side of the lower part of the first supporting plate, and the second supporting plates are rotatably arranged on the inner side of the second protective shell; the pull handles are arranged outside one side of the second supporting plate; the outer sides of the upper parts of the second supporting plates are symmetrically provided with retaining rings; the inner sides of the upper parts of the second supporting plates are symmetrically provided with guy ropes which are matched with the retaining rings; the first supporting plates are provided with first gears, and the first gears are positioned in the second protective shell; the lower parts of the first supporting plates are provided with first straight racks which are meshed with the first gears.

Further, still including collecting the mechanism, collect the mechanism including: the right side of the top of the base is provided with the containing box; the first push rods are symmetrically arranged on one side of the accommodating box and are matched with the first straight racks; the flexible hose is arranged on one side of the upper part of the accommodating box; the upper part of the flexible hose is provided with a collecting frame; the lower part of the containing box is symmetrically provided with stop rods; the stop blocks are symmetrically arranged on one side of the top of the base and are matched with the stop rods; the pull rope is arranged on one side of the accommodating box in a sliding mode; the baffle, the stay cord lower part is equipped with the baffle, the baffle with hold the case cooperation.

Further, still including anti-skidding mechanism, anti-skidding mechanism is including: the second push rods are symmetrically and slidably arranged at the lower parts of the first supporting plates; the inclined ejecting blocks are symmetrically arranged on one side of the supporting column in a sliding mode and are matched with the second push rod; the first springs are respectively arranged between the inclined ejecting block and the supporting column and are sleeved on the inclined ejecting block; antiskid ribbed tile, first backup pad one side symmetry rotary type are equipped with antiskid ribbed tile, antiskid ribbed tile and oblique kicking block cooperation.

Further, still including supporting mechanism, supporting mechanism includes: the lower part of the support column is provided with a first connecting rod; the water leakage frame is arranged in the first connecting rod; the inner sides of the water leakage frames of the first guide rods are symmetrically and slidably provided with the first guide rods; the supporting frame is arranged between the first guide rods; and the second springs are respectively arranged between the supporting frame and the water leakage frame and are all sleeved on the first guide rod.

Further, the method also comprises the following steps: the upper part of one side of the bearing mechanism is provided with a shielding mechanism.

Further, the shielding mechanism comprises: the supporting rod is arranged between the outer parts of one sides of the supporting columns; the upper part of the supporting rod is symmetrically and slidably provided with retaining cloth; third springs are respectively arranged between the inner sides of the blocking cloths and are sleeved on the supporting rods; the lower parts of the supporting rods are symmetrically provided with second connecting rods; the ejector rods are arranged on one sides of the second connecting rods in a sliding mode and are matched with the blocking cloth; the fourth spring is arranged between the middle part of one side of the ejector rod and the second connecting rod; the lower parts of the second connecting rods are provided with second guide rods, and the second guide rods are connected with the ejector rods in a sliding manner; and the lower parts of the second straight racks are both provided with second straight racks which are both meshed with the first gear.

The invention has the beneficial effects that: 1. the invention achieves the effects of simple integral structure and operability.

2. According to the invention, after a pregnant woman sits on the first supporting plate, the pregnant woman lies on the leaning plate, the legs are placed on the second supporting plate, the leg parts of the pregnant woman can be fixed by the tightening rope, the second supporting plate is manually pushed outwards to a certain distance, the pregnant woman can start to give birth, and the effect of simple integral structure is achieved.

3. When the medical staff manually pushes the second supporting plate to move outwards, the second supporting plate drives the inclined ejecting block to move towards the right side, so that the inclined ejecting block drives the anti-skid plate to rotate anticlockwise, a pregnant woman cannot slide off the midwifery bed, and the effect of operability is achieved.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic perspective view of the carrying mechanism of the present invention.

Fig. 3 is a schematic perspective view of the fixing mechanism of the present invention.

Fig. 4 is a schematic perspective view of the collecting mechanism of the present invention.

Fig. 5 is a schematic perspective view of the anti-slip mechanism of the present invention.

Fig. 6 is a schematic perspective view of the supporting mechanism of the present invention.

Fig. 7 is a schematic perspective view of the shielding mechanism of the present invention.

Fig. 8 is a schematic partial perspective view of the bearing mechanism of the present invention.

In the above drawings: 1: base, 2: rest plate, 3: first support plate, 4: second support plate, 5: bearing mechanism, 51: support column, 52: handle, 53: first mounting block, 54: worm, 55: bevel gear assembly, 56: first protective case, 57: first rotating lever, 58: second rotating lever, 59: gag lever post, 6: fixing mechanism, 61: handle, 62: retaining ring, 63: guy rope, 64: first straight rack, 65: second protective case, 66: first gear, 7: collecting mechanism, 71: first push rod, 72: collection frame, 73: telescoping hose, 74: accommodating box, 75: stop lever, 76: stopper, 77: pull cord, 78: baffle, 8: anti-slip mechanism, 81: second push rod, 82: first spring, 83: lifter block, 84: antiskid plate, 9: support mechanism, 91: support frame, 92: first guide bar, 93: second spring, 94: water leakage frame, 95: first connecting rod, 10: shielding mechanism, 1001: support rod, 1002: blocking cloth, 1003: third spring, 1004: second connecting rod, 1005: ejector pin, 1006: fourth spring, 1007: second guide bar, 1008: and a second spur rack.

Detailed Description

Reference herein to an embodiment means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

Example 1

The utility model provides an obstetric table is clinically with adjustable practise midwifery convenient to it is clean, as shown in figure 1, figure 2, figure 3 and figure 8, including base 1, lean on board 2, first backup pad 3, second backup pad 4, load-bearing mechanism 5 and fixed establishment 6, base 1 top is equipped with load-bearing mechanism 5, and load-bearing mechanism 5 right side is equipped with

first backup pad

3, and 3 left sides rotary types of first backup pad are equipped with and lean on

board

2, and 5 right sides lower part of load-bearing mechanism is equipped with fixed

establishment

6, and 6 upper portions of fixed establishment are equipped with second backup pad 4.

The bearing mechanism 5 comprises a support column 51, a holding handle 52, a first mounting block 53, a worm 54, a bevel gear component 55, a first protective shell 56, a first rotating rod 57, a second rotating rod 58 and a limiting rod 59, wherein the top of the base 1 is provided with the support column 51, the support column 51 is connected with the first support plate 3, the holding handle 52 is symmetrically arranged on the support column 51 in the front and back direction, the first mounting block 53 is symmetrically arranged on the lower part of the back side of the leaning plate 2, the worm 54 is rotatably arranged on the first mounting block 53, the first protective shell 56 is arranged on the left front side of the top of the base 1, the first rotating rod 57 is rotatably arranged on the lower part of the front side of the support column 51, the first rotating rod 57 is rotatably connected with the first protective shell 56, the second rotating rod 58 is rotatably arranged in the middle of the back side of the top of the base 1, the second rotating rod 58 is connected with the worm 54 through threads, the bevel gear component 55 is arranged between the second rotating rod 58 and the first rotating rod 57, the limiting rod 59 is slidably arranged on the support column 51, an elastic piece is connected between the limiting rod 59 and the supporting column 51.

Fixing mechanism 6 is including drawing handle 61, the buckle 62, the rope 63 stretches tight, first rack 64, second protective housing 65 and

first gear

66, 3 lower part right sides symmetries of first backup pad are equipped with second protective housing 65, the equal rotary type in second protective housing 65 inboard is equipped with second backup pad 4, the upside right side outside of second backup pad 4 all is equipped with draws handle 61, the equal symmetry in 4 upper portions outsides of second backup pad is equipped with buckle 62, the equal symmetry in 4 upper portions of second backup pad is equipped with the rope 63 stretches tight, the rope 63 stretches tight all cooperates with buckle 62, all be equipped with first gear 66 on the second backup pad 4, first gear 66 is located inside second

protective housing

65, 3 lower parts of first backup pad all are equipped with first rack 64, first rack 64 all meshes with first gear 66.

When people need to use the adjustable obstetric table for obstetrical clinical use, the device can be used, firstly, the limiting rod 59 is pushed backwards, the elastic part is stretched, then the first rotating rod 57 is manually rotated clockwise, the first rotating rod 57 drives the bevel gear component 55 and the second rotating rod 58 to rotate forward, the second rotating rod 58 drives the worm 54 and the struggle plate 2 to move upwards through threads, the first rotating rod 57 stops rotating after being adjusted to a proper position, the limiting rod 59 is loosened, the limiting rod 59 automatically resets under the action of the elastic part, the first rotating rod 57 is clamped, then, after a pregnant woman sits on the first supporting plate 3, the pregnant woman leans on the struggle plate 2, the legs are placed on the second supporting plate 4, the tightening rope 63 is manually penetrated through the buckle 62 and then tightened, the tightening rope 63 can fix the legs of the pregnant woman, the legs are prevented from falling off due to pain, then, the second supporting plate 4 is manually pushed outwards to a certain distance, after the preparation work is finished, the pregnant woman can begin to give birth, after the birth is finished, the tightening rope 63 is manually loosened, the tightening rope 63 is not in contact with the retaining ring 62 any more, the leg of the pregnant woman is not fixed any more, at the moment, the first rotating rod 57 is manually rotated anticlockwise, the first rotating rod 57 drives the bevel gear assembly 55 and the second rotating rod 58 to reversely rotate, the worm 54 and the leaning plate 2 move downwards, and the pregnant woman can lie flat.

Example 2

On the basis of embodiment 1, as shown in fig. 4, 5, 6 and 7, the collecting device further comprises a collecting mechanism 7, the collecting mechanism 7 comprises a first push rod 71, a collecting frame 72, a flexible hose 73, a containing box 74, a stop lever 75, a stop block 76, a pull rope 77 and a baffle plate 78, the containing box 74 is placed on the right side of the top of the base 1, the first push rods 71 are symmetrically arranged on the left side of the containing box 74 in the front-back direction, the first push rods 71 are all matched with the first straight rack 64, the flexible hose 73 is arranged on the right side of the upper portion of the containing box 74, the collecting frame 72 is arranged on the upper portion of the flexible hose 73, the stop lever 75 is symmetrically arranged on the lower portion of the containing box 74 in the front-back direction, the stop blocks 76 are symmetrically arranged on the right side of the top of the base 1 in the front-back direction, the stop blocks 76 are all matched with the stop levers 75, the pull rope 77 is slidably arranged on the left side of the containing box 74, the baffle plate 78 is arranged on the lower portion of the pull rope 77, and the baffle plate 78 is matched with the containing box 74.

Still including anti-skidding mechanism 8, anti-skidding mechanism 8 is including second push rod 81, first spring 82, oblique kicking block 83 and antiskid ribbed tile 84, first backup pad 3 lower part longitudinal symmetry slidingtype is equipped with second push rod 81, support column 51 right side longitudinal symmetry slidingtype is equipped with oblique kicking block 83, oblique kicking block 83 all cooperates with second push rod 81, be equipped with first spring 82 between oblique kicking block 83 and the support column 51 respectively, first spring 82 all overlaps on oblique kicking block 83, first backup pad 3 right side longitudinal symmetry rotary type is equipped with antiskid ribbed tile 84, antiskid ribbed tile 84 cooperates with oblique kicking block 83.

When the medical staff manually pushes the second support plate 4 to move outwards, the second support plate 4 drives the first gear 66 to rotate, the first gear 66 drives the first straight rack 64 to move towards the right side, the first straight rack 64 contacts with the first push rod 71, so that the first straight rack 64 drives the first push rod 71 to move towards the right side, the first push rod 71 drives the containing box 74 and the stop lever 75 to move towards the right side, the stop lever 75 is not contacted with the stop block 76 any more, so that the containing box 74 moves to the lower part of the pregnant woman, the height of the flexible hose 73 is manually adjusted, secretion generated by the childbirth of the pregnant woman can fall into the containing box 74 through the collecting frame 72, meanwhile, the right movement of the first straight rack 64 drives the second push rod 81 to move towards the right side, so that the second push rod 81 drives the inclined top block 83 to move towards the right side, the first spring 82 is compressed, and the inclined top block 83 drives the anti-slip plate 84 to rotate anticlockwise, so pregnant woman can not follow the landing on the practise midwifery bed, after pregnant woman's childbirth finishes, will hold case 74 and take to clearance department, manual pulling stay cord 77 moves to the right side, stay cord 77 just can drive baffle 78 rebound, and then make the secretion in holding case 74 poured, clear up the back, put back the position with holding case 74, manual inboard promotion second backup pad 4, second backup pad 4 just can drive first gear 66 and first straight rack 64 and reset, first straight rack 64 then no longer contacts with second push rod 81, drive second push rod 81 under first spring 82's the reset action, oblique kicking block 83 resets with antiskid ribbed tile 84, then manual to left side promotion holding case 74, when dog 76 and pin 75 contacted again, then can stop promoting.

Still including supporting mechanism 9, supporting mechanism 9 is including carriage 91, first guide bar 92, second spring 93, the frame 94 and the head rod 95 of leaking, support column 51 lower part is equipped with head rod 95, be equipped with the frame 94 that leaks in the head rod 95, the equal symmetrical slidingtype of inboard of the frame 94 that leaks is equipped with first guide bar 92, be equipped with carriage 91 between first guide bar 92, be equipped with second spring 93 between carriage 91 and the frame 94 that leaks respectively, second spring 93 all overlaps on first guide bar 92.

Also comprises a shielding mechanism 10, the shielding mechanism 10 comprises a support rod 1001, a blocking cloth 1002, a third spring 1003 and a second connecting rod 1004, ejector pin 1005, fourth spring 1006, second guide bar 1007 and second spur rack 1008, be equipped with bracing piece 1001 between the outside of support column 51 right side, bracing piece 1001 upper portion symmetry slidingtype is equipped with fender cloth 1002, be equipped with third spring 1003 between the fender cloth 1002 inboard respectively, third spring 1003 all overlaps on bracing piece 1001, bracing piece 1001 lower part symmetry is equipped with second connecting rod 1004, second connecting rod 1004 right side all slidingtype is equipped with ejector pin 1005, ejector pin 1005 and the cooperation of fender cloth 1002, all be equipped with fourth spring 1006 between ejector pin 1005 left side middle part and the second connecting rod 1004, second connecting rod 1004 lower part all is equipped with second guide bar 1007, second guide bar 1007 all is connected with ejector pin 1005 slidingtype, ejector pin 1005 lower part all is equipped with second spur rack 1008, second spur rack 1008 all meshes with first gear 66.

When a pregnant woman is ready to deliver, the first gear 66 drives the second spur rack 1008, the push rod 1005 and the second guide rod 1007 to move to the left side, the fourth spring 1006 is compressed, the push rod 1005 does not block the blocking cloth 1002 any more, the third spring 1003 in a compressed state drives the blocking cloth 1002 to move inwards, the pregnant woman ready to deliver is blocked, when the baby is about to be delivered, a medical worker places a hand in the supporting frame 91, the baby falls on the hand of the medical worker after delivery, the supporting frame 91 moves downwards due to the gravity of the baby, the second spring 93 is compressed, residues flowing out along with the baby flow to the water leakage frame 94 through the supporting frame 91, then flow into the accommodating box 74 through the collecting frame 72, then hold the baby up, the supporting frame 91 is reset under the reset action of the second spring 93, finally, the medical worker cleans the baby and cleans the pregnant woman, cleaning the midwifery bed.

The above description is only an example of the present invention and is not intended to limit the present invention. All equivalents which come within the spirit of the invention are therefore intended to be embraced therein. Details not described herein are well within the skill of those in the art.

Claims

1. The utility model provides an obstetrical department is clinical with adjustable obstetric table convenient to it is clean, characterized by including:

the device comprises a base (1) and a bearing mechanism (5), wherein the bearing mechanism (5) is arranged at the top of the base (1);

the first supporting plate (3) is arranged on one side of the bearing mechanism (5);

the leaning plate (2) is rotatably arranged on one side of the first supporting plate (3);

the lower part of one side of the bearing mechanism (5) is provided with the fixing mechanism (6);

the upper part of the second supporting plate (4) and the fixing mechanism (6) is provided with the second supporting plate (4).

2. An adjustable obstetric table for obstetrical clinical use convenient to clean as claimed in claim 1, characterized in that the carrying mechanism (5) comprises:

the supporting column (51), the supporting column (51) is arranged at the top of the base (1), and the supporting column (51) is connected with the first supporting plate (3);

the support columns (51) are symmetrically provided with the support handles (52);

the lower part of one side of the leaning plate (2) is symmetrically provided with a first mounting block (53);

a worm (54), wherein the first mounting block (53) is provided with the worm (54) in a rotating way;

the first protective shell (56) is arranged on one side of the top of the base (1);

the lower part of one side of the supporting column (51) is rotatably provided with a first rotating rod (57), and the first rotating rod (57) is rotatably connected with the first protective shell (56);

the middle of one side of the top of the base (1) is rotatably provided with a second rotating rod (58), and the second rotating rod (58) is connected with the worm (54) through threads;

the bevel gear assembly (55) is arranged between the second rotating rod (58) and the first rotating rod (57);

the limiting rod (59) is arranged on the supporting column (51) in a sliding mode, and the elastic piece is connected between the limiting rod (59) and the supporting column (51).

3. An adjustable obstetric table for obstetrical clinical use convenient to clean as claimed in claim 2, characterized in that the fixing means (6) comprises:

the second protective shell (65) is symmetrically arranged on one side of the lower portion of the first supporting plate (3), and the second supporting plates (4) are rotatably arranged on the inner sides of the second protective shell (65);

the pull handles (61) are arranged outside one side of the second supporting plate (4);

the outer sides of the upper parts of the second supporting plates (4) are symmetrically provided with retaining rings (62);

the inner sides of the upper parts of the second supporting plates (4) are symmetrically provided with tightening ropes (63), and the tightening ropes (63) are matched with the retaining rings (62);

the first gears (66) are arranged on the second supporting plate (4), and the first gears (66) are positioned inside the second protective shell (65);

the lower parts of the first straight rack (64) and the first supporting plate (3) are provided with the first straight rack (64), and the first straight rack (64) is meshed with the first gear (66).

4. An adjustable obstetric table for obstetrical clinical use convenient to clean as claimed in claim 3, characterized in that it further comprises a collecting mechanism (7), the collecting mechanism (7) comprising:

the accommodating box (74) is placed on one side of the top of the base (1);

the first push rods (71) are symmetrically arranged on one side of the accommodating box (74), and the first push rods (71) are matched with the first straight rack (64);

a flexible hose (73), wherein the flexible hose (73) is arranged on one side of the upper part of the containing box (74);

the upper part of the telescopic hose (73) is provided with the collecting frame (72);

the lower part of the containing box (74) is symmetrically provided with the stop levers (75);

the stop blocks (76) are symmetrically arranged on one side of the top of the base (1), and the stop blocks (76) are matched with the stop rods (75);

a pull rope (77), wherein the pull rope (77) is arranged on one side of the containing box (74) in a sliding way;

the baffle (78) is arranged at the lower part of the pull rope (77), and the baffle (78) is matched with the containing box (74).

5. An adjustable obstetric table for obstetrical clinical use convenient to clean as claimed in claim 4, characterized in that it further comprises an anti-slip mechanism (8), the anti-slip mechanism (8) comprises:

the lower part of the first supporting plate (3) is symmetrically and slidably provided with a second push rod (81);

the inclined ejecting block (83) is symmetrically and slidably arranged on one side of the supporting column (51), and the inclined ejecting block (83) is matched with the second push rod (81);

the first springs (82) are respectively arranged between the inclined ejecting block (83) and the supporting column (51), and the first springs (82) are sleeved on the inclined ejecting block (83);

antiskid plate (84), first backup pad (3) one side symmetry rotary type is equipped with antiskid plate (84), and antiskid plate (84) and oblique kicking block (83) cooperation.

6. An adjustable obstetric table for obstetrical clinical use convenient to clean as claimed in claim 5, characterized in that it further comprises a support mechanism (9), the support mechanism (9) comprising:

the lower part of the support column (51) is provided with a first connecting rod (95);

a water leakage frame (94), wherein the first connecting rod (95) is internally provided with the water leakage frame (94);

the inner sides of the first guide rods (92) and the water leakage frame (94) are symmetrically and slidably provided with the first guide rods (92);

a support frame (91), wherein the support frame (91) is arranged between the first guide rods (92);

and a second spring (93) is arranged between the supporting frame (91) and the water leakage frame (94), and the second spring (93) is sleeved on the first guide rod (92).

7. An adjustable obstetric table as claimed in claim 6, further comprising: the upper part of one side of the bearing mechanism (5) of the shielding mechanism (10) is provided with the shielding mechanism (10).

8. An adjustable obstetric table for obstetrical clinical use as claimed in claim 6, characterized in that the shielding means (10) comprises:

the supporting rod (1001) is arranged between the outer parts of one sides of the supporting columns (51);

the upper part of the supporting rod (1001) is symmetrically and slidably provided with the blocking cloth (1002);

third springs (1003) are respectively arranged between the inner sides of the blocking cloths (1002), and the third springs (1003) are sleeved on the supporting rod (1001);

the lower part of the support rod (1001) is symmetrically provided with a second connecting rod (1004);

the push rods (1005) are arranged on one sides of the second connecting rods (1004) in a sliding mode, and the push rods (1005) are matched with the blocking cloth (1002);

a fourth spring (1006), wherein the fourth spring (1006) is arranged between the middle part of one side of the ejector rod (1005) and the second connecting rod (1004);

the lower parts of the second guide rods (1007) and the second connecting rods (1004) are respectively provided with a second guide rod (1007), and the second guide rods (1007) are both connected with the ejector rod (1005) in a sliding manner;

and the lower parts of the second straight racks (1008) and the top rods (1005) are respectively provided with the second straight racks (1008), and the second straight racks (1008) are respectively meshed with the first gear (66).