CN106006505B - A kind of rescue aid of hand three foldings stretching bridge-type - Google Patents

A kind of rescue aid of hand three foldings stretching bridge-type Download PDF

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Publication number
CN106006505B
CN106006505B CN201610364459.9A CN201610364459A CN106006505B CN 106006505 B CN106006505 B CN 106006505B CN 201610364459 A CN201610364459 A CN 201610364459A CN 106006505 B CN106006505 B CN 106006505B
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expansion plate
hand
tooth
platform
angle
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CN201610364459.9A
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CN106006505A (en
Inventor
吴超
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Quzhou Yifan Design Co Ltd
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Quzhou Yifan Design Co Ltd
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Priority to CN201610364459.9A priority Critical patent/CN106006505B/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66FHOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F19/00Hoisting, lifting, hauling or pushing, not otherwise provided for
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66FHOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F13/00Common constructional features or accessories
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66FHOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/08Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated
    • B66F3/12Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated comprising toggle levers

Abstract

A kind of rescue aid of hand three foldings stretching bridge-type, there is the emergency and rescue equipment quickly supported of the energy load-bearing of the automobile rescue of three sections of foldable platforms on more particularly to a kind of top for the hydraulic jack for having a telescopic rod, telescopic rod between platform and hydraulic jack, the outer tube body interior of telescopic rod has two groups of teeth shape protrusion, the equipment supports the wheel of vehicle by three sections of foldable platforms on jack, expansion plate further includes the expansion plate for the back segment that can be stretched or shrink, succoured to complete self in the direction in length and breadth for adjusting three sections of foldable platforms, vehicle can be with longitudinal translation and transverse translation by three sections of foldable platforms, realize safe operation, it is laborsaving, achieve the purpose that easy to operation, practicality is big.

Description

A kind of rescue aid of hand three foldings stretching bridge-type
Technical field
It is more particularly to a kind of to have the hand of telescopic rod the present invention relates to a kind of rescue aid of hand three foldings stretching bridge-type There is the emergency rescue device quickly supported of the energy load-bearing of the automobile rescue of three sections of foldable platforms on the top of formula jack.
Background technology
In vehicle driving process, one of wheel can be run into or two of which wheel falls into the accident of ditch, bank, even Wheel uses the accident on road surface, since road surface He Gou, bank bottom drop are more than very heavy heights of roofs, in such case it is difficult to sue and labour.
Especially in the wild, the situation of the independent self-driving of driver, in situation about helping without other people, occurs above-mentioned thing Therefore driver is more difficult to save oneself.
Pinner block, sandy soil, plank or vehicle etc. is promoted currently for above-mentioned accident, below generally use wheel with manpower Mode is rescued, and in rescue operations, due to lacking auxiliary tool, inconvenience of gathering materials on the spot, often time-consuming, there are wheel The uncompacted situation of under-filler, during automobile self-rescue, safety guarantee is difficult, does not often reach the effect of anticipation, at present Neither one can complete the emergency rescue device that vehicle is saved oneself with field handled by itself.
The content of the invention
The present invention goal of the invention be:For overcome the prior art without have it is a kind of can load-bearing the emergency management and rescue quickly supported Device, it is an object of the invention to provide a kind of quickly support three sections of foldable platforms deliverance apparatus of hand-rail type, the equipment It can be rescued by independent operation to realize self, manpower, financial resources and time be greatly saved, which passes through on jack Three sections of foldable platforms support the wheel of vehicle, and expansion plate further includes the expansion plate for the back segment that can be stretched or shrink, adjustment The direction in length and breadth of three sections of foldable platforms is succoured to complete self, and vehicle can be with longitudinal translation and horizontal stroke by three sections of foldable platforms To translation, realize safe operation, it is laborsaving, achieve the purpose that easy to operation, practicality is big.
The present invention is achieved through the following technical solutions:A kind of rescue aid of hand three foldings stretching bridge-type, including Scissors hand-operated jack, platform, left expansion plate, right expansion plate, telescopic rod, bottom plate,
The support on scissors hand-operated jack top is connected with the lower part in the stage casing of platform;
It can be rotated horizontally between the scissors hand-operated jack and platform;
Bottom plate is connected with below the scissors hand-operated jack;
The area of the bottom plate is more than the projected area of platform;
There is telescopic rod between the platform and scissors hand-operated jack;
The bottom of telescopic rod is connected with the support on scissors hand-operated jack top;
The stage casing of platform and the top horizontal of telescopic rod connect;
It can be rotated horizontally between the platform and the top of telescopic rod;
There is left expansion plate on the left of the platform, with hinge connection between platform and left expansion plate;
There is right expansion plate on the right side of the platform, with hinge connection between platform and right expansion plate;
The left expansion plate further includes left back section of expansion plate, and card slot type is used between left expansion plate and left back section of expansion plate It is flexibly connected;
It can stretch or shrink between the left expansion plate and left back section of expansion plate;
The right expansion plate further includes right back segment expansion plate, and card slot type is used between right expansion plate and right back segment expansion plate It is flexibly connected;
It can stretch or shrink between the right expansion plate and right back segment expansion plate;
There is scissors hand-operated jack below the overcoat tube body;
The scissors hand-operated jack further includes the adjusting screw rod in the middle part of it and the handle to match with adjusting screw rod;
The telescopic rod includes overcoat tube body, inner sleeve tube body;
The outer tube body interior is provided with inner sleeve tube body;
There is overcoat tube chamber in the overcoat tube body;
The outer tube inside cavity has internal tooth form protrusion;
Be uniformly arranged four sections of the inner horizontal direction that described internal tooth form protrusion includes overcoat tube chamber are less than 1/8 inner circle Arc-shaped " internal tooth " of arc length;
The uniform parallel distribution of exterior entire body of the inner sleeve tube body has external tooth form protrusion;
The external tooth form protrusion includes four sections that inner sleeve body exterior horizontal direction is uniformly arranged and is less than 1/8 external arc Long " external tooth ";
The tooth form that the internal tooth form protrusion of the overcoat tube body and the external tooth form of inner sleeve tube body are protruded cooperates.
A kind of rescue aid of more preferred hand three foldings stretching bridge-type, the epimere of the outer tube inside cavity The internal tooth form for having uniform parallel distribution is protruded, and the lower part of internal tooth form protrusion is hollow straight tube, or the overcoat tube chamber 1-2 The internal uniform parallel distribution of entire body has internal tooth form protrusion.
A kind of rescue aid of more preferred hand three foldings stretching bridge-type,
There is locating slot in the middle part of " external tooth ";
The overcoat tube body further includes safe catching lock, and safe catching lock is installed on the side of the epimere of overcoat tube body;
The safe catching lock further includes positioning thimble, elastomer, and the elastomer of the inside of safe catching lock is inside by thimble When bullet, internal tooth form protrusion and external tooth form protrusion rotation overlap, thimble is caught in locating slot.
A kind of rescue aid of more preferred hand three foldings stretching bridge-type, the elastomer is spring, plastic cement bullet Property body or elastic piece.
A kind of rescue aid of more preferred hand three foldings stretching bridge-type, the circular arc of the tooth of internal tooth form protrusion Both ends and the angle a in the center of circle be less than 45 °, the angle b between the tooth of adjacent two internal tooth forms protrusion and the center of circle is more than 45 °;
The both ends of circular arc of the tooth of the external tooth form protrusion and the angle d in the center of circle are less than 45 °, adjacent two external tooth forms Angle c between the tooth of protrusion and the center of circle is more than 45 °;
A kind of rescue aid of more preferred hand three foldings stretching bridge-type, the angle a is 40 ° to 44.5 °, folder Angle b is 45.5 ° to 50 °, and angle c is 45.5 ° to 50 °, and angle d is 40 ° to 44.5 °.
A kind of rescue aid of more preferred hand three foldings stretching bridge-type, the angle a is 44 °, and angle b is 46 °, angle c is 46 °, and angle d is 44 °.
The advantageous effects that the present invention obtains are:With current field rescue Technical comparing, the present invention obtains beneficial Have the technical effect that:The equipment can be rescued by independent operation to realize self, save manpower, financial resources and time, suitable ditch, The rescue of bank, the equipment support the wheel of vehicle by three sections of foldable platforms on jack, and expansion plate further includes can be with Stretching or the expansion plate of the back segment shunk, the direction in length and breadth for adjusting three sections of foldable platforms are succoured to complete self, and vehicle passes through Three sections of foldable platforms the vehicle after support can be rotated with any direction and any direction do lateral translation, realize safe operation, It is laborsaving, achieve the purpose that easy to operation, practicality is big easy to operate simple, can realize one self rescue;Save time, behaviour Make safety;Everyday driver just can skilled fast operating without practice.
Brief description of the drawings
Fig. 1 is the schematic diagram of the present invention.
Fig. 2 is that Fig. 1 upper levels rotate 180 ° of schematic diagrames.
Fig. 3 is that flat schematic diagram is stretched on Fig. 1 tops.
Fig. 4 is that overcoat tube body epimere of the present invention has internal tooth form protrusion, the schematic diagram of hypomere hollow straight tube;
Fig. 5 is inner sleeve tube body schematic diagram of the present invention;
Fig. 6 is the supporting rod schematic diagram of the assembling of Fig. 4 and Fig. 5 of the present invention;
Fig. 7 is that Fig. 4 of the present invention installs safe catching lock schematic diagram additional;
Fig. 8 is the supporting rod schematic diagram of the assembling of Fig. 7 and Fig. 5 of the present invention;
Fig. 9 is the schematic diagram that overcoat tube body entire body of the present invention has internal tooth form to protrude;
Figure 10 is the supporting rod schematic diagram of the assembling of Fig. 9 and Fig. 9 of the present invention;
Figure 11 is that Fig. 9 of the present invention installs safe catching lock schematic diagram additional;
Figure 12 is the supporting rod schematic diagram of the assembling of Figure 11 and Fig. 5 of the present invention;
Figure 13 is the A-A schematic diagrames of Fig. 4 or Fig. 9 of the present invention;
Figure 14 is the B-B schematic diagrames of Fig. 5 of the present invention;
Figure 15 is Fig. 6 or Figure 10 of the present invention in Figure 13 states and the C-C schematic diagrames of the supporting rod of Figure 15 states assembling;
Figure 16 is the A-A schematic diagrames of Fig. 7 or Figure 11 of the present invention;
Figure 17 is the present invention and the B-B schematic diagrames of Fig. 7 or Figure 11 Fig. 5 coordinated;
Figure 18 is Fig. 8 or Figure 12 of the present invention in Figure 16 and the C-C schematic diagrames of the supporting rod of Figure 17 states assembling.
In figure:1. overcoat tube body, 1-1. internal tooth forms are protruded, outside 2. inner sleeve tube body 2-1. of 1-2. overcoat tube chambers Tooth form is protruded, 3. platforms, 3-1. hinges, the left expansion plates of 3-21., the right expansion plates of 3-22., left back section of expansion plate of 3-31., 3-32. Right back segment expansion plate, A. telescopic rods, D. bottom plates, J. scissors hand-rail type jack.
Embodiment
Below in conjunction with specific embodiment, the present invention will be further described, but protection domain of the presently claimed invention not office It is limited to the described scope of specific embodiment.
Example 1:A kind of rescue aid of hand three foldings stretching bridge-type as described in Fig. 1 to Figure 18, including scissors are hand Jack J, platform 3, left expansion plate 3-21, right expansion plate 3-22, telescopic rod A, bottom plate D,
The support on scissors hand-operated jack J tops is connected with the lower part in the stage casing of platform 3;
It can be rotated horizontally between the scissors hand-operated jack J and platform 3;
Bottom plate D is connected with below the scissors hand-operated jack J;
The area of the bottom plate D is more than the projected area of platform 3;
There is telescopic rod A between the platform 3 and scissors hand-operated jack J;
The bottom of telescopic rod A is connected with the support on scissors hand-operated jack J tops;
The stage casing of platform 3 is connected with the top horizontal of telescopic rod A;
It can be rotated horizontally between the platform 3 and the top of telescopic rod A;
There is left expansion plate 3-21 in the left side of the platform 3, with hinge 3-1 connections between platform 3 and left expansion plate 3-21;
There is right expansion plate 3-22 on the right side of the platform 3, with hinge 3-1 connections between platform 3 and right expansion plate 3-22;
The left expansion plate 3-21 further includes left back section of expansion plate 3-31, left expansion plate 3-21 and left back section of expansion plate 3- It is flexibly connected between 31 using card slot type;
It can stretch or shrink between the left expansion plate 3-21 and left back section of expansion plate 3-31;
The right expansion plate 3-22 further includes right back segment expansion plate 3-32, right expansion plate 3-22 and right back segment expansion plate 3- It is flexibly connected between 32 using card slot type;
It can stretch or shrink between the right expansion plate 3-22 and right back segment expansion plate 3-32;
There is scissors hand-operated jack J below the overcoat tube body 1;
The handle that the scissors hand-operated jack J further includes the adjusting screw rod in the middle part of it and matches with adjusting screw rod;
The telescopic rod A includes overcoat tube body 1, inner sleeve tube body 2;
Inner sleeve tube body 2 is installed inside the overcoat tube body 1;
There is overcoat tube chamber 1-2 in the overcoat tube body 1;
There is internal tooth form to protrude 1-1 inside the overcoat tube chamber 1-2;
The internal tooth form is protruded four sections that inner horizontal directions of the 1-1 including overcoat tube chamber 1-2 is uniformly arranged and is less than Arc-shaped " internal tooth " of 1/8 inner circle arc length;
The uniform parallel distribution of exterior entire body of the inner sleeve tube body 2 has external tooth form to protrude 2-1;
The external tooth form protrusion 2-1 includes four sections that 2 outer horizontal direction of inner sleeve tube body is uniformly arranged and is less than outside 1/8 " external tooth " of circular arc length;
The tooth form phase of the internal tooth form protrusion 1-1 of the overcoat tube body 1 and the external tooth form protrusion 2-1 of inner sleeve tube body 2 Mutually coordinate;
Run into the single wheel of vehicle be absorbed in shallow hole it is immovable in the case of, the bottom that bottom plate D can be first put into hole is consolidated It is fixed, then the telescopic rod A shown in Fig. 4-6 and platform 3 are installed on scissors hand-operated jack J, then by left expansion plate 3-21 The both sides of platform 3 are installed on right expansion plate 3-22, telescopic rod A and/or scissors hand-operated jack J is then raised, platform 3 is pasted Closely by sunken wheel, the direction of platform 3, left expansion plate 3-21 and right expansion plate 3-22 is then adjusted, out of left expansion plate 3-21 Pull out left back section of expansion plate 3-31, pull out right back segment expansion plate 3-32 out of right expansion plate 3-22, left back section of expansion plate 3-31 and A right back segment expansion plate 3-32 at least frame side on the ground, then shakes the handle of scissors hand-operated jack J, drives and adjusts spiral shell Bar raises scissors hand-operated jack J and props up vehicle again, adjusts the promotion car of direction in length and breadth of expansion plate or starts car and sails out of By sunken position;, can be according to different actual feelings when running into two wheels of vehicle, while being absorbed in irremovable situation in hole Condition, using the three folding rescue aid of hydraulic pressure of two sets of present invention, takes above-mentioned mode to operate.
Example 2:A kind of rescue aid of hand three foldings stretching bridge-type according to example 1, the overcoat tube chamber Epimere inside body 1-2 has the internal tooth form protrusion 1-1 of uniform parallel distribution, and the lower part of internal tooth form protrusion 1-1 is hollow straight tube, Or the uniform parallel distribution of entire body has internal tooth form to protrude 1-1 inside the overcoat tube chamber 1-2.
Example 3:A kind of rescue aid of hand three foldings stretching bridge-type according to example 1 or 2,
There is locating slot 7 in the middle part of " external tooth ";
The overcoat tube body 1 further includes safe catching lock, and safe catching lock is installed on the side of the epimere of overcoat tube body 1 Side;
The safe catching lock further includes positioning thimble 6-1, elastomer 6, and the elastomer 6 of the inside of safe catching lock is by thimble When the inside bullets of 6-1, internal tooth form protrusion 1-1 and external tooth form protrusion 1-2 rotations overlap, thimble 6-1 is caught in locating slot 7;
Run into the single wheel of vehicle be absorbed in shallow hole it is immovable in the case of, the bottom that bottom plate D can be first put into hole is consolidated It is fixed, then the telescopic rod A shown in Fig. 4-6 and platform 3 are installed on scissors hand-operated jack J, then by left expansion plate 3-21 The both sides of platform 3 are installed on right expansion plate 3-22, telescopic rod A and/or scissors hand-operated jack J is then raised, platform 3 is pasted Closely by sunken wheel, the direction of platform 3, left expansion plate 3-21 and right expansion plate 3-22 is then adjusted, out of left expansion plate 3-21 Pull out left back section of expansion plate 3-31, pull out right back segment expansion plate 3-32 out of right expansion plate 3-22, left back section of expansion plate 3-31 and A right back segment expansion plate 3-32 at least frame side on the ground, then adjusts safe catching lock, thimble 6-1 is caught in locating slot 7, so The handle of scissors hand-operated jack J is shaken afterwards, is driven adjusting screw rod to raise scissors hand-operated jack J again and is propped up vehicle, adjusts The direction in length and breadth of expansion plate promotes car or starts car and sails out of by sunken position;Two wheels of vehicle are run into, while are absorbed in hole During irremovable situation, using the three folding rescue aid of hydraulic pressure of two sets of present invention, it can be taken according to different actual conditions Above-mentioned mode operates.
Example 4:A kind of rescue aid of hand three foldings stretching bridge-type according to example 3, the elastomer 6 are Spring, plastic elastomeric or elastic piece.
Example 5:A kind of rescue aid of hand three foldings stretching bridge-type according to example 1, the internal tooth form are convex The angle a at the both ends and the center of circle that go out the circular arc of the tooth of 1-1 is less than 45 °, the tooth and the center of circle of adjacent two internal tooth forms protrusion 1-1 it Between angle b be more than 45 °;
The both ends of circular arc of the tooth of the external tooth form protrusion 2-1 and the angle d in the center of circle are less than 45 °, and adjacent two outer Angle c between the tooth of tooth form protrusion 2-1 and the center of circle is more than 45 °.
Example 6:A kind of rescue aid of hand three foldings stretching bridge-type according to example 5, carries out many experiments Summarize, the angle a selects 40 ° to 44.5 °, and angle b selects 45.5 ° to 50 °, and angle c selects 45.5 ° to 50 °, angle d When selecting 40 ° to 44.5 °, the telescopic rod A of rescue aid is pulled flexibly, and stress is big.
Example 7:A kind of rescue aid of hand three foldings stretching bridge-type according to example 6, carries out many experiments Summarize, the angle a is 44 °, and angle b is 46 °, and angle c is 46 °, when angle d is 44 °, that is, ensure that stretching for rescue aid Contracting bar A pulls flexible, it is ensured that the stress of the telescopic rod A of rescue aid is maximum.
Embodiments of the present invention are explained in detail above in association with attached drawing, however, the present invention is not limited thereto, in affiliated skill In the knowledge that the technical staff in art field possesses, various changes can also be made on the premise of present inventive concept is not departed from Changing, person of ordinary skill in the field not inventively works from above-mentioned design, made a variety of conversion, It is within the scope of the present invention.

Claims (7)

1. a kind of rescue aid of hand three foldings stretching bridge-type, including scissors hand-operated jack(J), platform(3), left expansion plate (3-21), right expansion plate(3-22), telescopic rod(A), bottom plate(D), it is characterized in that:
Scissors hand-operated jack(J)The support on top and platform(3)Stage casing lower part connection;
The scissors hand-operated jack(J)And platform(3)Between can rotate horizontally;
The scissors hand-operated jack(J)Below be connected with bottom plate(D);
The bottom plate(D)Area be more than platform(3)Projected area;
The platform(3)With scissors hand-operated jack(J)Between have telescopic rod(A);
Telescopic rod(A)Bottom and scissors hand-operated jack(J)The support connection on top;
Platform(3)Stage casing and telescopic rod(A)Top horizontal connection;
The platform(3)And telescopic rod(A)Top between can rotate horizontally;
The platform(3)Left side have left expansion plate(3-21), platform(3)With left expansion plate(3-21)Between with hinge(3- 1)Connection;
The platform(3)Right side have right expansion plate(3-22), platform(3)With right expansion plate(3-22)Between with hinge(3- 1)Connection;
The left expansion plate(3-21)Further include left back section of expansion plate(3-31), left expansion plate(3-21)With left back section of expansion plate (3-31)Between using card slot type be flexibly connected;
The left expansion plate(3-21)With left back section of expansion plate(3-31)Between can stretch or shrink;
The right expansion plate(3-22)Further include right back segment expansion plate(3-32), right expansion plate(3-22)With right back segment expansion plate (3-32)Between using card slot type be flexibly connected;
The right expansion plate(3-22)With right back segment expansion plate(3-32)Between can stretch or shrink;
Overcoat tube body(1)Below have scissors hand-operated jack(J);
The scissors hand-operated jack(J)Further include the adjusting screw rod in the middle part of it and the handle to match with adjusting screw rod;
The telescopic rod(A)Including overcoat tube body(1), inner sleeve tube body(2);
The overcoat tube body(1)Inside is provided with inner sleeve tube body(2);
The overcoat tube body(1)Inside there is overcoat tube chamber(1-2);
The overcoat tube chamber(1-2)There is internal tooth form protrusion in inside(1-1);
The internal tooth form protrusion(1-1)Including overcoat tube chamber(1-2)Be uniformly arranged four sections of inner horizontal direction be less than Arc-shaped " internal tooth " of 1/8 inner circle arc length;
The inner sleeve tube body(2)The uniform parallel distribution of exterior entire body have external tooth form protrusion(2-1);
The external tooth form protrusion(2-1)Including inner sleeve tube body(2)Outer horizontal direction be uniformly arranged four sections is less than outside 1/8 " external tooth " of circular arc length;
The overcoat tube body(1)Internal tooth form protrusion(1-1)With inner sleeve tube body(2)External tooth form protrusion(2-1)Tooth Shape cooperates.
2. a kind of rescue aid of hand three foldings stretching bridge-type according to claim 1, it is characterized in that:The overcoat Tube chamber(1-2)The internal tooth form that internal epimere has uniform parallel distribution is protruded(1-1), internal tooth form protrusion(1-1)Lower part It is hollow straight tube, or the overcoat tube chamber(1-2)The internal uniform parallel distribution of entire body has internal tooth form protrusion(1-1).
3. a kind of rescue aid of hand three foldings stretching bridge-type according to claim 1 or 2, it is characterized in that:
There is locating slot in the middle part of " external tooth "(7);
The overcoat tube body(1)Safe catching lock is further included, safe catching lock is installed on overcoat tube body(1)Epimere side Side;
The safe catching lock further includes positioning thimble(6-1), elastomer(6), the elastomer of the inside of safe catching lock(6)Will top Pin(6-1)Inside bullet, internal tooth form protrusion(1-1)Protruded with external tooth form(2-1 )When rotation overlaps, thimble(6-1)It is caught in locating slot (7).
4. a kind of rescue aid of hand three foldings stretching bridge-type according to claim 3, it is characterized in that:The elasticity Body(6)It is spring, plastic elastomeric or elastic piece.
5. a kind of rescue aid of hand three foldings stretching bridge-type according to claim 1, it is characterized in that:The internal tooth Shape is protruded(1-1)Tooth the both ends of circular arc and the angle a in the center of circle be less than 45 °, adjacent two internal tooth forms protrusion(1-1)Tooth Angle b between the center of circle is more than 45 °;
The external tooth form protrusion(2-1)Tooth circular arc both ends and the center of circle angle d be less than 45 °, adjacent two external tooths Shape is protruded(2-1)Tooth and the center of circle between angle c be more than 45 °.
6. a kind of rescue aid of hand three foldings stretching bridge-type according to claim 5, it is characterized in that:The angle A is 40 ° to 44.5 °, and angle b is 45.5 ° to 50 °, and angle c is 45.5 ° to 50 °, and angle d is 40 ° to 44.5 °.
7. a kind of rescue aid of hand three foldings stretching bridge-type according to claim 6, it is characterized in that:The angle A is 44 °, and angle b is 46 °, and angle c is 46 °, and angle d is 44 °.
CN201610364459.9A 2016-05-30 2016-05-30 A kind of rescue aid of hand three foldings stretching bridge-type Active CN106006505B (en)

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CN201610364459.9A CN106006505B (en) 2016-05-30 2016-05-30 A kind of rescue aid of hand three foldings stretching bridge-type

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CN201810311047.8A CN108439295A (en) 2016-05-30 2016-05-30 A kind of rescue aid of the three hand folding bridge-types of self-locking
CN201610364459.9A CN106006505B (en) 2016-05-30 2016-05-30 A kind of rescue aid of hand three foldings stretching bridge-type
CN201810312399.5A CN108658022A (en) 2016-05-30 2016-05-30 A kind of rescue aid of the three folding bridge-types hand with self-locking

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CN201810312399.5A Division CN108658022A (en) 2016-05-30 2016-05-30 A kind of rescue aid of the three folding bridge-types hand with self-locking

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CN106006505B true CN106006505B (en) 2018-05-04

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CN201810312399.5A Pending CN108658022A (en) 2016-05-30 2016-05-30 A kind of rescue aid of the three folding bridge-types hand with self-locking
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CN108439250A (en) * 2018-03-01 2018-08-24 张蓉 One kind being based on the transformable hydraulic jack of screw-driven bearing area
CN108358104A (en) * 2018-03-01 2018-08-03 张蓉 A kind of transformable hydraulic jack of bearing area

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