CN110848299A

CN110848299A - Electric control expansion method of spring energy storage type expansion link

Info

Publication number: CN110848299A
Application number: CN201911169389.1A
Authority: CN
Inventors: 丁先虎; 梅厚凤; 杨凯
Original assignee: Luan Fengkaini Electromechanical Technology Co Ltd
Current assignee: Luan Fengkaini Electromechanical Technology Co Ltd
Priority date: 2019-11-26
Filing date: 2019-11-26
Publication date: 2020-02-28

Abstract

The invention provides an electric control expansion method of a spring energy storage type expansion link, which comprises the following steps that firstly, an electric control component drives a roller to rotate to enable a steel belt to be gradually released, the steel belt gradually releases the restraint on a driving spring, the elastic potential energy of a spring energy storage component is released and pushes an inner cylinder to slide outwards along an outer cylinder, so that an expansion joint component extends, the release amount of the elastic potential energy of the driving spring is controlled by controlling the release amount of the steel belt, and the expansion joint component is controlled to extend in a fixed length; meanwhile, the locking block is matched with the sawtooth-shaped step to limit and fix the relative inner cylinder and the relative outer cylinder to realize locking; then, the electric control component drives the roller to rotate reversely to gradually withdraw the steel strip, the lower pressing block enables the locking component to release the limiting locking between the opposite inner cylinder and the opposite outer cylinder one by one, the fourth telescopic cylinder, the third telescopic cylinder and the second telescopic cylinder retract in sequence, and the telescopic joint component is switched to a shortened state.

Description

Electric control expansion method of spring energy storage type expansion link

Technical Field

The invention relates to a telescopic rod, in particular to an electric control telescopic method of a spring energy storage type telescopic rod.

Background

The application field of the telescopic rod is very extensive, it is visible everywhere in daily production life, for example, daily use is from rapping bar, the transfusion bottle support in the hospital, the support handle of umbrella, and telescopic manipulator on the automatic assembly line, ordinary telescopic rod includes that the telescopic joint that the multistage nests each other constitutes, constitute the slip guide cooperation between the adjacent nested telescopic joint, stretch out through the telescopic joint and realize the extension of telescopic rod, realize the shortening of telescopic rod through the retraction of telescopic joint inwards, the drive mode includes manual drive, hydraulic drive or utilizes step motor to drive, at present, ordinary telescopic rod realizes carrying out spacing restraint to the telescopic rod through a locking structure, avoid it to shrink in the use, this will lead to unable convenient control telescopic rod's extension length, in order to solve above-mentioned difficult problem, it is necessary to provide a structure ingenious, the telescopic rod of a structure, The principle is simple, the operation and the use are convenient, the extension length of the telescopic rod can be adjusted at any time, and the self-locking can be ensured.

Disclosure of Invention

In order to solve the defects of the prior art, the invention aims to provide the electric control expansion method of the spring energy storage type telescopic rod, which has the advantages of ingenious structure, simple principle and convenient operation and use, can adjust the extension length of the telescopic rod at any time and can ensure self-locking.

In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows.

An electric control expansion method of a spring energy storage type expansion link comprises the following steps:

an elongation stage;

s1: the electric control component drives the roller to rotate so as to gradually release the steel strip, the steel strip gradually releases the restraint on the driving spring, the elastic potential energy of the spring energy storage component is released and pushes the relative inner cylinder to slide outwards along the relative outer cylinder, so that the telescopic joint component extends, the release amount of the elastic potential energy of the driving spring is controlled by controlling the release amount of the steel strip, and the telescopic joint component is controlled to extend at a fixed length;

the telescopic joint component is composed of a plurality of telescopic cylinders which are nested with each other, the telescopic joint component is set to be in an extension state, a shortening state and an intermediate state between the two states which can be switched with each other, the telescopic cylinders are in rectangular cylindrical structures with two open ends, one end of each telescopic cylinder along the extension direction is a telescopic end, the other end deviating from the extension direction is a connecting end, each telescopic cylinder comprises a first telescopic cylinder, a second telescopic cylinder, a third telescopic cylinder and a fourth telescopic cylinder, the length of each telescopic cylinder is reduced in sequence, the second telescopic cylinder is movably nested on the inner wall of the first telescopic cylinder and can be slidably telescopic along the length direction of the first telescopic cylinder, the third telescopic cylinder is movably nested on the inner wall of the second telescopic cylinder and can be slidably telescopic along the length direction of the second telescopic cylinder, the fourth telescopic cylinder is movably nested on the inner wall of the third telescopic cylinder and can be slidably telescopic along the length direction of the third telescopic cylinder, the telescopic end of the fourth telescopic cylinder is fixedly provided with a top end cover, the connecting end of the first telescopic cylinder is fixedly provided with a bottom end cover, the telescopic joint component in a shortened state is flush with the telescopic ends of the first telescopic cylinder, the second telescopic cylinder, the third telescopic cylinder and the fourth telescopic cylinder;

in the telescopic joint formed by the first telescopic cylinder and the second telescopic cylinder, the first telescopic cylinder is a relative outer cylinder and the second telescopic cylinder is a relative inner cylinder; in the telescopic joint formed by the second telescopic cylinder and the third telescopic cylinder, the second telescopic cylinder is a relative outer cylinder, and the third telescopic cylinder is a relative inner cylinder; in a telescopic joint formed by a third telescopic cylinder and a fourth telescopic cylinder, the third telescopic cylinder is a relative outer cylinder and the fourth telescopic cylinder is a relative inner cylinder, an external step is arranged on the outer wall of the relative inner cylinder close to the connecting end of the relative inner cylinder, an internal step matched with the external step is arranged on the inner wall of the relative outer cylinder close to the telescopic end of the relative outer cylinder, and the internal step and the external step are matched with each other to limit and restrict outward sliding of the relative inner cylinder;

the expansion joint component is switched from a shortened state to an extended state in the working process, and the specific expression is that the electric control component controls the spring energy storage component to completely release elastic potential energy, the spring energy storage component enables the relative inner cylinder to slide outwards along the relative outer cylinder until an external step on the relative outer cylinder is abutted to an internal step on the relative outer cylinder, the relative inner cylinder extends completely and the expansion joint component is switched to the extended state, in the process, the electric control component controls the spring energy storage component to release the elastic potential energy quantitatively, the spring energy storage component releases elasticity quantitatively and enables the relative inner cylinder to slide outwards along the relative outer cylinder in a fixed length, and the expansion joint component is switched to a middle state;

s2: in the S1 process, the locking block is matched with the sawtooth-shaped step to limit and fix the relative inner cylinder and the relative outer cylinder to realize locking;

(II) shortening state;

s3: the electric control component drives the roller to rotate reversely to gradually withdraw the steel belt, the steel belt pulls the lower pressing block to move towards the direction of the connecting end of the telescopic cylinder, the lower pressing block enables the locking component between the fourth telescopic cylinder and the third telescopic cylinder to release the limit restriction on the fourth telescopic cylinder and the third telescopic cylinder, the fourth telescopic cylinder completely slides into the third telescopic cylinder, the lower pressing block further enables the locking component to release the limit locking on the inner cylinder and the outer cylinder one by one, the fourth telescopic cylinder, the third telescopic cylinder and the second telescopic cylinder sequentially retract, and the telescopic joint component is switched to a shortened state;

be provided with fixed block and fixed block in the first telescopic cylinder and be located first telescopic cylinder along length direction's middle part position, spring energy storage component includes the cavity containing cylinder that both ends opening arranged, the axial of containing cylinder is on a parallel with the length direction of telescopic cylinder and is provided with two side by side, the containing cylinder includes with box body matched with unsteady containing cylinder, with fixed containing cylinder of fixed block, initial state containing cylinder is close to telescopic end one end of telescopic cylinder and is contradicted with the bottom of adjacent box body, the box body is close to and has seted up the circular mounting groove that is on a parallel with telescopic cylinder axial on the telescopic end terminal surface of telescopic cylinder, the mounting groove is located in the middle of the spout of homonymy, the mounting groove be provided with two and with unsteady containing cylinder one-to-one, the diameter that coaxial fixed cover was equipped with annular external boss and external boss on the outer disc of unsteady containing cylinder equals with the diameter of mounting groove, unsteady containing The external boss can float up and down in the mounting groove along the groove depth direction;

the sliding block is provided with a through triggering chute, the through direction of the through triggering chute is parallel to the distance direction of the two chutes on the same side, the distance between the triggering chutes on the sliding block on the different side is gradually increased along the direction that the connecting end of the telescopic cylinder points to the telescopic end, the external step is fixedly provided with two triggering columns which radially extend outwards along the external step, the triggering columns are symmetrically arranged along the axial direction of the external step, the triggering columns movably penetrate out of the chutes from the mounting groove and are inserted into the triggering chutes, the triggering columns are matched with the triggering chutes to form sliding guide fit, the external movable sleeve of the floating containing cylinder is provided with a floating spring, one end of the floating spring is abutted against the external step, the other end of the floating spring is abutted against the groove bottom of the mounting groove, and the elastic force of;

the spring energy storage component also comprises driving springs arranged between two adjacent mounting boxes and between the adjacent mounting boxes and the fixed block, the driving springs are constrained and arranged in the corresponding floating storage cylinders and the fixed storage cylinders in an initial state, wherein one end of each driving spring arranged in each fixed storage cylinder is abutted against the fixed block, the other end of each driving spring is abutted against the bottom of the adjacent box body, the elastic force of each driving spring is always directed to the adjacent box body by the fixed block, one end of each driving spring arranged in each floating storage cylinder is abutted against the bottom of the mounting groove, the other end of each driving spring is abutted against the bottom of the adjacent box body, and the elastic force of each driving spring is always directed to the adjacent box body by the bottom of the;

the spring energy storage component also comprises two retractable steel belts which are movably arranged in the flat holes in a penetrating manner, one end of each steel belt penetrates through the fixed containing barrel and the three floating containing barrels through the flat holes, a lower pressing block is fixedly arranged at the end of each steel belt, the lower pressing block is fixedly connected with the floating containing barrels far away from the fixed containing barrels, the other end of each steel belt is arranged in a retractable manner, and a driving spring is sleeved on the steel belt and is internally supported by the steel belt;

the end face, close to the connecting end of the first telescopic cylinder, of the fixed block is fixedly provided with an installation box, a roller for winding a steel belt is rotatably arranged in the installation box, the axial direction of the roller is perpendicular to the length direction of the first telescopic cylinder, the two rollers are in one-to-one correspondence with the steel belt, guide wheels which are axially parallel to the axial direction of the roller are rotatably arranged on the first installation box and are close to the fixed block, the two guide wheels are in one-to-one correspondence with the roller, and the other end of the steel belt movably penetrates into the first installation box, is wound on the opposite outer side of each guide wheel and is then fixedly connected with;

when the spring energy storage component drives the telescopic joint component to extend, the electric control component drives the roller to rotate so as to enable the steel belt to be gradually released, the steel belt gradually releases the restraint on the driving spring, the elastic potential energy of the driving spring is released and pushes the relative inner cylinder to slide outwards along the relative outer cylinder, namely, the second telescopic cylinder slides outwards along the first telescopic cylinder, the third telescopic cylinder slides outwards along the second telescopic cylinder, the fourth telescopic cylinder slides outwards along the third telescopic cylinder, the locking block is matched with the sawtooth-shaped step to limit and fix the relative inner cylinder and the relative outer cylinder to realize locking, the release amount of the steel strip is controlled to control the release amount of the elastic potential energy of the driving spring, so that the telescopic joint component extends at a fixed length, the telescopic joint component is switched to an intermediate state/an extending state, and three pairs of opposite inner cylinders and opposite outer cylinders extend synchronously in the process;

when the spring energy storage component drives the telescopic joint component to shorten, the electric control component drives the roller to rotate reversely to enable the steel belt to be gradually retracted, the steel belt pulls the lower pressing block to move towards the direction of the connecting end of the telescopic cylinder, the lower pressing block enables the locking component between the fourth telescopic cylinder and the third telescopic cylinder to release the limiting constraint on the fourth telescopic cylinder and the third telescopic cylinder, the fourth telescopic cylinder slides towards the third telescopic cylinder until the fourth telescopic cylinder is completely retracted into the third telescopic cylinder, at the moment, the box body in the fourth telescopic cylinder presses the floating containing cylinder in the third telescopic cylinder, the locking component between the third telescopic cylinder and the second telescopic cylinder releases the limiting constraint on the third telescopic cylinder and the second telescopic cylinder, the third telescopic cylinder slides towards the second telescopic cylinder until the third telescopic cylinder is completely retracted into the second telescopic cylinder, at the moment, the box body in the third telescopic cylinder presses the floating containing cylinder in the second telescopic cylinder downwards and enables the locking component between the second telescopic cylinder and the first telescopic cylinder to release the locking component To the spacing restraint of both, the second telescopic cylinder slides towards first telescopic cylinder, until the second telescopic cylinder retracts to the first telescopic cylinder completely, the telescopic joint component will switch to the state of shortening, and three pairs of relative inner tubes and relative urceolus shorten one by one in this process.

As a further optimization or improvement of the present solution.

The locking component is fixedly arranged at the opening of the connecting end of the opposite inner cylinder and extends outwards from the opposite inner cylinder to be matched with the opposite outer cylinder to realize locking, the locking component comprises a mounting box fixedly connected with the opening of the connecting end of the opposite inner cylinder, the mounting box corresponds to the inside and the outside of an external step, the mounting box comprises a rectangular box body with an opening pointing to the telescopic end of the opposite inner cylinder, the size of the rectangular box body is consistent with that of the opening of the opposite inner cylinder, rectangular sliding grooves are formed in the opposite side surfaces of the box body and penetrate through to the upper end surface of the box body, four sliding grooves are arranged and correspond to each other in pairs, rectangular sliding blocks matched with the sliding grooves are arranged in the sliding grooves, two sliding blocks which are correspondingly arranged can slide close to each other or far away from each other along the sliding grooves, a locking block extending outwards from the opening, the distance between the inclined planes on the two correspondingly arranged locking blocks is gradually reduced along the connecting end pointing to the telescopic end of the relative inner cylinder, and a box cover matched with the box body is arranged at the opening of the box body.

As a further optimization or improvement of the present solution.

The connecting end of the opposite inner cylinder is provided with rectangular through holes which are in one-to-one correspondence with the locking blocks, the inside of the opposite inner cylinder is provided with saw-toothed steps which are arranged along the length direction of the opposite inner cylinder, the saw-toothed steps are provided with four parts and are matched with the saw-toothed steps and the locking blocks one by one, the saw-toothed steps are composed of horizontal tables and inclined tables which are alternately arranged, the horizontal tables are arranged towards the telescopic end of the opposite inner cylinder, the inclined tables are used for connecting two adjacent horizontal tables, the locking blocks extend outwards from the rectangular through holes and are matched with the horizontal tables of the saw-toothed steps, one end face of the locking block, which is close to the connecting end of the opposite inner cylinder, is lapped on the horizontal table of the saw-toothed steps to restrict the retraction motion of the opposite inner cylinder, in the extension process of the telescopic joint component, the locking blocks, when the relative inner cylinder completely extends out of the relative outer cylinder, the locking block is matched with one end, close to the telescopic end of the relative inner cylinder, of the sawtooth-shaped step, and when the relative inner cylinder completely retracts into the relative outer cylinder, the locking block is matched with one end, close to the connecting end of the relative inner cylinder, of the sawtooth-shaped step.

As a further optimization or improvement of the present solution.

When the telescopic joint component extends, the sliding block slides outwards along the opening of the sliding groove under the action of the thrust of the spring energy storage component and enables the locking block to elastically abut against the serrated step to achieve the matching of the locking block and the serrated step, and when the telescopic joint component shortens, the sliding block slides inwards along the opening of the sliding groove under the action of the tension of the spring energy storage component and enables the locking block to be separated from the serrated step to achieve the releasing of the matching of the locking block and the serrated step.

As a further optimization or improvement of the present solution.

The electric control component comprises a second installation box, the second installation box is fixedly connected with one end of the first installation box, which is far away from the fixed block, a worm axially parallel to the length direction of the telescopic cylinder is rotatably arranged between the second installation box and the side face of the first installation box, the worm is arranged between the second installation box and the side face of the first installation box, the driving end of a roller shaft of one roller movably penetrates out of the outer part of one side of the first installation box, a turbine meshed with the worm is coaxially and fixedly sleeved at the end of the worm, the output end of the roller shaft movably penetrates out of the outer part of the other side of the first installation box, a driving synchronous gear is coaxially and fixedly sleeved at the other end of the first installation box, the synchronous driving gear is meshed with the synchronous driven gear, the diameters of the synchronous driving gear and the synchronous driven gear are equal, a stepping motor is fixedly arranged outside the second installation box, an output shaft of the stepping motor is axially parallel to, the coaxial fixed cover on the step motor output shaft is equipped with the speed reduction driving gear, and the drive end of worm extends to the installation box two insides and this end coaxial fixed cover is equipped with speed reduction driven gear, and speed reduction driving gear meshes with speed reduction driven gear mutually and the diameter of speed reduction driving gear is less than speed reduction driven gear's diameter.

Compared with the prior art, the telescopic rod has the advantages that the structure is ingenious, the principle is simple, the operation and the use are convenient, the telescopic rod is driven to extend outwards through the energy storage of the spring, the steel belt penetrates through the spring, the extension and the compression of the spring are realized by driving the steel belt to be released or retracted, when the spring extends, the telescopic rod extends, when the spring compresses, the telescopic rod is shortened, the extension length of the telescopic rod is conveniently controlled, the plurality of telescopic rods are limited and restrained by the locking component, and the telescopic rod is prevented from being contracted in the use process.

Drawings

FIG. 1 is a schematic diagram of a shortened state according to the present invention.

FIG. 2 is a schematic diagram of the foreshortened state of the present invention.

FIG. 3 is a schematic view of the elongated structure of the present invention.

FIG. 4 is a schematic view of the elongated structure of the present invention.

Fig. 5 is a schematic view of the internal structure of the present invention.

Fig. 6 is a schematic structural view of a telescopic joint member.

Fig. 7 is a view showing the arrangement of the telescopic cylinders.

Fig. 8 is a schematic structural view of the telescopic cylinder.

Fig. 9 is a view showing the engagement of the telescopic cylinder with the locking member.

Fig. 10 is a view showing the engagement of the telescopic cylinder with the locking member.

Fig. 11 is a schematic structural view of the locking member.

Fig. 12 is a schematic view of the internal structure of the locking member.

Fig. 13 is a view showing the engagement of the locking member with the telescopic cylinder.

Fig. 14 is a view of the spring energized member in cooperation with the locking member.

Fig. 15 is a structural schematic diagram of the spring energy storage member with the elastic potential energy completely released.

Fig. 16 is a view of the spring energy storage member in cooperation with the first telescoping barrel.

Fig. 17 is a mating view of the spring energy storage member and the locking member.

Fig. 18 is a mating view of the spring energy storage member and the locking member.

Fig. 19 is a mating view of the spring energy storage member and the locking member.

Fig. 20 is a partial structural view of a spring energy storage member.

Fig. 21 is a partial structural view of a spring energy storage member.

FIG. 22 is a mating view of the electric control member and the spring energy storage member.

Fig. 23 is a view of the electric control member in cooperation with the spring energy storage member.

Detailed Description

an elongation stage;

s1: the electric control component 400 drives the roller 310 to rotate so as to gradually release the steel belt 306, the steel belt 306 gradually releases the constraint on the driving spring 303, the elastic potential energy of the spring energy storage component 300 is released and pushes the relative inner cylinder 107a to slide outwards along the relative outer cylinder 107b, so that the telescopic joint component 100 is extended, and the release amount of the elastic potential energy of the driving spring 303 is controlled by controlling the release amount of the steel belt 306, so that the telescopic joint component 100 is controlled to extend by a fixed length;

the telescopic joint member 400 is composed of a plurality of telescopic cylinders which are nested with each other, the telescopic joint member 100 is set to be in an extension state, a shortening state and an intermediate state between the two states, the initial state is the shortening state, the telescopic cylinders are in a rectangular cylindrical structure with two open ends, one end of the telescopic cylinders along the extension direction is a telescopic end, the other end deviating from the extension direction is a connecting end, the telescopic cylinders comprise a first telescopic cylinder 101, a second telescopic cylinder 102, a third telescopic cylinder 103 and a fourth telescopic cylinder 10, the length of the telescopic cylinders is sequentially reduced, the second telescopic cylinder 102 is movably nested on the inner wall of the first telescopic cylinder 101 and can be slidingly telescopic along the length direction of the first telescopic cylinder 101, the third telescopic cylinder 103 is movably nested on the inner wall of the second telescopic cylinder 102 and can be slidingly telescopic along the length direction of the second telescopic cylinder 102, the fourth telescopic cylinder 104 is movably nested on the inner wall of the third telescopic cylinder 103 and can be slidingly telescopic along the length direction of the third telescopic cylinder 103, a top end cover 105 is fixedly arranged at the telescopic end of the fourth telescopic cylinder 104, a bottom end cover 106 is fixedly arranged at the connecting end of the first telescopic cylinder 101, the telescopic joint member 100 in a shortened state is flush with the telescopic ends of the first telescopic cylinder 101, the second telescopic cylinder 102, the third telescopic cylinder 103 and the fourth telescopic cylinder 104;

in the telescopic joint formed by the first telescopic cylinder 101 and the second telescopic cylinder 102, the first telescopic cylinder 101 is a relative outer cylinder 107b and the second telescopic cylinder 102 is a relative inner cylinder 107 a; in the telescopic joint formed by the second telescopic tube 102 and the third telescopic tube 103, the second telescopic tube 102 is a relative outer tube 107b and the third telescopic tube 103 is a relative inner tube 107 a; in the telescopic joint formed by the third telescopic cylinder 103 and the fourth telescopic cylinder 104, the third telescopic cylinder 103 is a relative outer cylinder 107b and the fourth telescopic cylinder 104 is a relative inner cylinder 107a, an external step 109 is arranged on the outer wall of the relative inner cylinder 107a close to the connecting end of the relative inner cylinder, an internal step 108 matched with the external step 109 is arranged on the inner wall of the relative outer cylinder 107b close to the telescopic end of the relative inner cylinder, and the internal step 108 and the external step 109 are matched with each other to limit and restrict the outward sliding of the relative inner cylinder 107 a;

during the operation of the telescopic joint member 100, the telescopic joint member 100 is switched from the shortened state to the extended state, specifically, the electric control member 400 controls the spring energy storage member 300 to completely release the elastic potential energy, the spring energy storage member 300 will cause the relative inner cylinder 107a to slide outwards along the relative outer cylinder 107b until the external step 109 on the relative outer cylinder 107b is in contact with the internal step 108 on the relative outer cylinder 107a, the relative inner cylinder 107a is completely extended, and the telescopic joint member 100 is switched to the extended state, during the operation, the electric control member 400 controls the spring energy storage member 300 to quantitatively release the elastic potential energy, the spring energy storage member 300 quantitatively releases the elasticity and causes the relative inner cylinder 107a to slide outwards along the relative outer cylinder 107b for a fixed length, so that the telescopic joint member 100 is switched to the intermediate state;

s2: in the process of S1, the locking block 205 is engaged with the serrated step 110 to limit and fix the relative inner cylinder 107a and the relative outer cylinder 107b to achieve locking;

the locking component 200 is fixedly arranged at the opening of the connecting end of the opposite inner cylinder 107a and extends outwards from the opposite inner cylinder 107a to be matched with the opposite outer cylinder 107b to realize locking, the locking component 200 comprises a mounting box which is fixedly connected with the opening of the connecting end of the opposite inner cylinder 107a and corresponds to the inside and the outside of the external step 109, the mounting box comprises a rectangular box body 201 with an opening pointing to the telescopic end of the opposite inner cylinder 107a, the size of the rectangular box body 201 is consistent with that of the opening of the opposite inner cylinder 107a, the opposite side surfaces of the box body 201 are respectively provided with a rectangular sliding chute 203, the rectangular sliding chutes 203 penetrate through the upper end surface of the box body 201, the sliding chutes 203 are provided with four and correspond to each other in pairs, rectangular sliding blocks 204 matched with the sliding chutes 203 are arranged in the sliding chutes 203, the two sliding blocks 204 which are correspondingly arranged can mutually approach to each other or separate from each other along the, the extending end of the locking block 205 is set as an inclined surface 206, the distance between the inclined surfaces 206 on the two correspondingly arranged locking blocks 205 is gradually reduced along the direction from the connecting end to the telescopic end of the relative inner cylinder 107a, and a box cover 202 matched with the opening of the box body 201 is arranged at the opening;

the connecting end of the opposite inner cylinder 107a is provided with rectangular through holes 111 corresponding to the locking blocks 205 one by one, the inside of the opposite inner cylinder 107a is provided with saw-toothed steps 110, the saw-toothed steps 110 are arranged along the length direction of the opposite inner cylinder 107a, the saw-toothed steps 110 are provided with four and matched with the saw-toothed steps 110 and the locking blocks 205 one by one, the saw-toothed steps 110 are composed of alternately arranged horizontal tables and inclined tables, the horizontal tables are arranged towards the telescopic end of the opposite inner cylinder 107a and are used for connecting two adjacent horizontal tables, the locking blocks 205 extend outwards from the rectangular through holes 111 and are matched with the horizontal tables of the saw-toothed steps 110, one end face of the locking block 205 close to the connecting end of the opposite inner cylinder 107a is lined on the horizontal table of the saw-toothed steps 110 to restrain the retraction movement of the opposite inner cylinder 107a, in the extension process of the telescopic joint member 100, the locking blocks 205 elastically abut against the saw-toothed The telescopic end of the opposite outer cylinder 107b slides in a single direction, when the opposite inner cylinder 107a is completely extended out of the opposite outer cylinder 107b, the locking block 205 is matched with one end, close to the telescopic end of the opposite inner cylinder 107a, of the sawtooth-shaped step 110, and when the opposite inner cylinder 107a is completely retracted into the opposite outer cylinder 107b, the locking block 205 is matched with one end, close to the connecting end of the opposite inner cylinder 107, of the sawtooth-shaped step 110;

when the telescopic joint member 110 is extended, the sliding block 204 is pushed by the spring energy storage member 300 to slide outwards along the opening of the sliding chute 203 and make the locking block 205 elastically abut against the serrated step 110 to realize the matching of the locking block 205 and the serrated step 110, and when the telescopic joint member 110 is shortened, the sliding block 204 is pulled by the spring energy storage member 300 to slide inwards along the opening of the sliding chute 203 and make the locking block 205 separate from the serrated step 110 to realize the releasing of the matching of the locking block 205 and the serrated step 110;

in the extension process of the telescopic joint component 110, the locking block 205 is subjected to the thrust action of the spring energy storage component 300, the locking block 205 is always matched with the sawtooth-shaped step 10, and the locking block 205 is matched with the sawtooth-shaped step 110 to limit and fix the relative inner cylinder 107a and the relative outer cylinder 107b at any position to realize locking;

(II) shortening state;

s3: the electric control component 400 drives the roller 300 to rotate reversely to gradually withdraw the steel belt 306, the steel belt 306 pulls the lower pressing block 307 to move towards the direction of the connecting end of the telescopic cylinder, the lower pressing of the lower pressing block 307 enables the locking component 200 between the fourth telescopic cylinder 104 and the third telescopic cylinder 103 to release the limit restriction on the fourth telescopic cylinder 104 and the third telescopic cylinder 103, the fourth telescopic cylinder 104 completely slides into the third telescopic cylinder 103, the further lower pressing of the lower pressing block 307 enables the locking component 200 to release the limit locking between the opposite inner cylinder 107a and the opposite outer cylinder 107b one by one, the fourth telescopic cylinder 104, the third telescopic cylinder 103 and the second telescopic cylinder 102 sequentially retract, and the telescopic joint component 100 is switched to a shortened state;

the spring energy storage component 300 comprises hollow storage barrels 301 with two ends arranged in an opening mode, the axial direction of each storage barrel 301 is parallel to the length direction of the telescopic barrels and two storage barrels are arranged in parallel, each storage barrel 301 comprises a floating storage barrel matched with the box body 201 and a fixed storage barrel fixed with the corresponding fixed block 120, one end, close to the telescopic end of each telescopic barrel, of each storage barrel 301 in an initial state is abutted to the bottom of the adjacent box body 201, a circular mounting groove 208 parallel to the axial direction of each telescopic barrel is formed in one end face, close to the telescopic end of each telescopic barrel, of each box body 201, the mounting grooves 208 are located in the middle of the sliding grooves 203 on the same side, the mounting grooves 208 are two and correspond to the floating storage barrels one to one, annular external bosses 302 are coaxially and fixedly sleeved on the outer circular face of each floating storage barrel, and the diameters of the external bosses 302 are equal to the diameters of the mounting grooves 208, the floating containing cylinder movably penetrates through the box cover 202 and is inserted into the mounting groove 208, the external boss 302 and the mounting groove 208 form sliding guide fit along the axial direction parallel to the telescopic cylinder, and the external boss 302 can float up and down in the mounting groove 208 along the groove depth direction;

the slider 204 is provided with a through triggering chute 207, the through direction of the through triggering chute 207 is parallel to the distance direction of the two chutes 203 on the same side, the distance between the triggering chutes 207 on the slider 204 on the opposite side is gradually increased along the direction from the connecting end of the telescopic cylinder to the telescopic end, the external step 302 is fixedly provided with two triggering columns 305 extending outwards along the radial direction of the external step 302, the two triggering columns 305 are symmetrically arranged along the axial direction of the external step 302, the triggering columns 305 movably penetrate out of the chutes 203 from the mounting groove 208 and are inserted into the triggering chutes 207, the triggering columns 305 are matched with the triggering chutes 207 to form sliding guide fit, the floating spring 304 is movably sleeved outside the floating receiving cylinder 301, one end of the floating spring 304 abuts against the external step 302, the other end of the floating spring abuts against the bottom of the mounting groove 208, and the elastic force of the floating spring 304 always points to the external step 302 from the bottom of the mounting groove 208;

the spring energy storage member 300 further comprises driving springs 303 arranged between two adjacent mounting boxes and between the adjacent mounting box and the fixed block 120, the driving springs 303 are constrained to be arranged in the corresponding floating storage barrel and the fixed storage barrel in an initial state, wherein one end of each driving spring 303 arranged in the fixed storage barrel abuts against the fixed block 120, the other end of each driving spring 303 abuts against the bottom of the adjacent box body 201, the elastic force of each driving spring 303 is always directed to the adjacent box body 201 from the fixed block 120, one end of each driving spring 303 arranged in the floating storage barrel abuts against the groove bottom of the mounting groove 208, the other end of each driving spring 303 abuts against the bottom of the adjacent box body 201, and the elastic force of each driving spring 303 is always directed to the adjacent box body 201 from the groove bottom of the;

a penetrating flat hole 209 is formed at the bottom of the mounting groove 208, a penetrating flat hole 209 is formed in the fixed block 120, the spring energy storage member 300 further comprises retractable steel belts 306 movably penetrating into the flat hole 209, two steel belts 209 are arranged in parallel, one end of each steel belt 306 penetrates through the fixed containing barrel and the three floating containing barrels through the flat hole 209, a lower pressing block 307 is fixedly arranged at the end of each steel belt 306, the lower pressing block 307 is fixedly connected with the floating containing barrels far away from the fixed containing barrels, the other end of each steel belt 306 is arranged in a retractable manner, and the driving spring 303 is sleeved on the steel belt 306 and is supported by the steel belt 306;

the end face, close to the connecting end of the first telescopic cylinder 101, of the fixing block 120 is fixedly provided with an installation box 308, rollers 310 for winding the steel belt 306 are rotatably arranged in the installation box 308, the axial direction of each roller 310 is perpendicular to the length direction of the first telescopic cylinder 101, two rollers 310 are arranged and correspond to the steel belt 306 one by one, guide wheels 309 axially parallel to the axial direction of the rollers 310 are rotatably arranged on the installation box one 308, the guide wheels 309 are arranged close to the fixing block 120, the two guide wheels 309 are arranged and correspond to the rollers 310 one by one, and the other end of the steel belt 306 movably penetrates into the installation box one 308, is wound on the opposite outer side of the guide wheel 309 and is fixedly connected with the outer circular face;

when the spring energy storage member 300 drives the telescopic joint member 100 to extend, the electric control member 400 drives the roller 310 to rotate so as to gradually release the steel belt 306, the steel belt 306 gradually releases the constraint on the driving spring 303, the elastic potential energy of the driving spring 303 is released and pushes the relative inner cylinder 107a to slide outwards along the relative outer cylinder 107b, namely, the second telescopic cylinder 102 slides outwards along the first telescopic cylinder 101, the third telescopic cylinder 103 slides outwards along the second telescopic cylinder 102, the fourth telescopic cylinder 104 slides outwards along the third telescopic cylinder 103 and the three are performed synchronously, the locking block 205 is matched with the sawtooth-shaped step 110 so as to limit and fix the position between the relative inner cylinder 107a and the relative outer cylinder 107b to realize locking, the release amount of the steel belt 306 is controlled so as to control the release amount of the elastic potential energy of the driving spring 303, so that the telescopic joint member 100 extends at a fixed length, and the telescopic joint member 100 is switched to an intermediate state/extended state, in the process, three pairs of opposite inner cylinders 107a and opposite outer cylinders 107b extend synchronously;

when the spring energy storage member 300 drives the telescopic joint member 100 to shorten, the electric control member 400 drives the roller 310 to rotate reversely to enable the steel belt 306 to gradually retract, the steel belt 306 pulls the lower pressing block 307 to move towards the direction of the connecting end of the telescopic cylinder, the lower pressing of the lower pressing block 307 enables the locking member 200 between the fourth telescopic cylinder 104 and the third telescopic cylinder 103 to release the limit constraint on the steel belt 306 and the lower pressing block, the fourth telescopic cylinder 104 slides towards the third telescopic cylinder 103 until the fourth telescopic cylinder 104 is completely retracted into the third telescopic cylinder 103, at the moment, the box body 201 in the fourth telescopic cylinder 104 presses the floating containing cylinder in the third telescopic cylinder 103 down, the locking member 200 between the third telescopic cylinder 103 and the second telescopic cylinder releases the limit constraint on the floating containing cylinder and the third telescopic cylinder 103 slides towards the second telescopic cylinder 102 until the third telescopic cylinder 103 is completely retracted into the second telescopic cylinder 102, at this time, the box 201 in the third telescopic tube 103 presses down the floating storage tube in the second telescopic tube 102 and releases the limit restriction on the second telescopic tube 102 and the first telescopic tube 101 by the locking member 200, the second telescopic tube 102 slides towards the first telescopic tube 102 until the second telescopic tube 102 is completely retracted into the first telescopic tube 101, the telescopic joint member 100 is switched to the shortened state, and in the process, the three pairs of the relative inner tubes 107a and the relative outer tubes 107b are shortened one by one.

Referring to fig. 1 to 23, a spring energy storage type multi-stage electric telescopic rod comprises a telescopic joint member 100 formed by mutually nesting a plurality of telescopic cylinders, a locking member 200 for limiting and constraining the telescopic cylinders nested in the outer and inner parts, a spring energy storage member 300 for driving the telescopic joint member 100 to extend, and an electric control member 400 for controlling the spring energy storage member 300 to release elastic potential energy or store the elastic potential energy, wherein the telescopic joint member 100 is set to an extension state, a shortening state and an intermediate state between the two states, the initial state is the shortening state, the electric control member 400 controls the spring energy storage member 300 to completely release the elastic potential energy and causes the telescopic joint member 100 to be switched from the shortening state to the extension state, the electric control member 400 controls the spring energy storage member 300 to store the elastic potential energy and causes the telescopic joint member 100 to be reset from the extension state to the shortening state, the electric control member 400 can precisely control the release amount of the elastic potential energy of the spring energy storage member 300 so as to control the extension length of the telescopic joint member 100 in the intermediate state.

Specifically, the telescopic cylinder is a rectangular cylinder structure with two open ends, one end of the telescopic cylinder along the extension direction is a telescopic end, and the other end deviating from the extension direction is a connecting end, the telescopic cylinder comprises a first telescopic cylinder 101, a second telescopic cylinder 102, a third telescopic cylinder 103 and a fourth telescopic cylinder 10, the length of the first telescopic cylinder 101 is sequentially reduced, the second telescopic cylinder 102 is movably nested on the inner wall of the first telescopic cylinder 101 and can slide and stretch along the length direction of the first telescopic cylinder 101, the third telescopic cylinder 103 is movably nested on the inner wall of the second telescopic cylinder 102 and can slide and stretch along the length direction of the second telescopic cylinder 102, the fourth telescopic cylinder 104 is movably nested on the inner wall of the third telescopic cylinder 103 and can slide and stretch along the length direction of the third telescopic cylinder 103, a top end cover 105 is fixedly arranged at the telescopic end of the fourth telescopic cylinder 104, a bottom end cover 106 is fixedly arranged at the connecting end of the first telescopic cylinder 101, in the telescopic joint member 100 in the shortened state, the telescopic ends of the first telescopic cylinder 101, the second telescopic cylinder 102, the third telescopic cylinder 103 and the fourth telescopic cylinder 104 are flush with each other.

More specifically, in the telescopic joint formed by the first telescopic cylinder 101 and the second telescopic cylinder 102, the first telescopic cylinder 101 is a relative outer cylinder 107b and the second telescopic cylinder 102 is a relative inner cylinder 107 a; in the telescopic joint formed by the second telescopic tube 102 and the third telescopic tube 103, the second telescopic tube 102 is a relative outer tube 107b and the third telescopic tube 103 is a relative inner tube 107 a; in the telescopic joint formed by the third telescopic cylinder 103 and the fourth telescopic cylinder 104, the third telescopic cylinder 103 is a relative outer cylinder 107b and the fourth telescopic cylinder 104 is a relative inner cylinder 107a, in order to avoid mutual falling of the two telescopic cylinders forming the telescopic joint, an external step 109 is arranged on the outer wall of the relative inner cylinder 107a close to the connecting end of the relative inner cylinder, an internal step 108 matched with the external step 109 is arranged on the inner wall of the relative outer cylinder 107b close to the telescopic end of the relative outer cylinder, and the internal step 108 and the external step 109 are matched with each other to limit and restrict outward sliding of the relative inner cylinder 107 a.

During the operation of the telescopic joint member 100, the telescopic joint member 100 is switched from the shortened state to the extended state, specifically, the electric control member 400 controls the spring energy storage member 300 to completely release the elastic potential energy, the spring energy storage member 300 will cause the relative inner cylinder 107a to slide outwards along the relative outer cylinder 107b until the external step 109 on the relative outer cylinder 107b is in contact with the internal step 108 on the relative outer cylinder 107a, the relative inner cylinder 107a is completely extended, and the telescopic joint member 100 is switched to the extended state, during the operation, the electric control member 400 controls the spring energy storage member 300 to quantitatively release the elastic potential energy, the spring energy storage member 300 quantitatively releases the elasticity and causes the relative inner cylinder 107a to slide outwards along the relative outer cylinder 107b for a fixed length, so that the telescopic joint member 100 is switched to the intermediate state; when the telescopic joint member 100 is in the intermediate state or the extension state, the locking member 200 limits and restricts the relative inner cylinder 107a and the relative outer cylinder 107b to avoid the telescopic joint member 100 from retracting and affecting the normal use, wherein the electric control member 400 controls the spring energy storage member 300 to store elastic potential energy, the spring energy storage member 300 urges the relative inner cylinder 107a to slide towards the relative outer cylinder 107b until the telescopic end of the relative inner cylinder 107a is flush with the telescopic end of the relative outer cylinder 107b, the relative inner cylinder 107a is completely retracted and the telescopic joint member 100 is switched to the shortening state; in the process of switching the telescopic joint member 100 from the extended state to the shortened state, the lock member 200 is first released from the restraint between the opposing inner cylinder 107a and the opposing outer cylinder 107b, and then the telescopic joint member 100 is driven to switch to the shortened state.

The locking component 200 is fixedly arranged at the opening of the connecting end of the opposite inner cylinder 107a and extends outwards from the opposite inner cylinder 107a to be matched with the opposite outer cylinder 107b to realize locking, the locking component 200 comprises a mounting box which is fixedly connected with the opening of the connecting end of the opposite inner cylinder 107a and corresponds to the inside and the outside of the external step 109, the mounting box comprises a rectangular box body 201 with an opening pointing to the telescopic end of the opposite inner cylinder 107a, the size of the rectangular box body 201 is consistent with that of the opening of the opposite inner cylinder 107a, the opposite side surfaces of the box body 201 are respectively provided with a rectangular sliding chute 203, the rectangular sliding chutes 203 penetrate through the upper end surface of the box body 201, the sliding chutes 203 are provided with four and correspond to each other in pairs, rectangular sliding blocks 204 matched with the sliding chutes 203 are arranged in the sliding chutes 203, the two sliding blocks 204 which are correspondingly arranged can mutually approach to each other or separate from each other along the, the extending end of the locking block 205 is set to be an inclined surface 206, the distance between the inclined surfaces 206 on the two correspondingly arranged locking blocks 205 is gradually reduced along the direction of the telescopic end of the connecting end of the relative inner cylinder 107a, in order to avoid the falling-off between the sliding block 204 and the sliding groove 203, a box cover 202 matched with the opening of the box body 201 is arranged at the opening of the box body 201, and the limiting locking is realized by the matching of the locking block 205 and the relative outer cylinder 107 b.

Specifically, in order to facilitate the locking block 205 to be matched with the opposite outer cylinder 107b, a rectangular through hole 111 corresponding to the locking block 205 one by one is formed at the connecting end of the opposite inner cylinder 107a, a sawtooth-shaped step 110 is arranged inside the opposite inner cylinder 107a, the sawtooth-shaped step 110 is arranged along the length direction of the opposite inner cylinder 107a, four sawtooth-shaped steps 110 are arranged and matched with the sawtooth-shaped steps 110 and the locking block 205 one by one, the sawtooth-shaped step 110 is composed of horizontal tables and inclined tables which are alternately arranged, the horizontal tables are arranged towards the telescopic end of the opposite inner cylinder 107a and used for connecting the two adjacent horizontal tables, the locking block 205 extends outwards from the rectangular through hole 111 and is matched with the horizontal table of the sawtooth-shaped step 110, one end face of the locking block 205 close to the connecting end of the opposite inner cylinder 107a is lined on the horizontal table of the sawtooth-shaped step, during the extension of the telescopic joint member 100, the locking block 205 elastically interferes with the serrated step 110 and can slide along the serrated step 110 in a single direction from the connecting end of the opposite inner cylinder 107a to the telescopic end of the opposite outer cylinder 107b, when the opposite inner cylinder 107a is fully extended out of the opposite outer cylinder 107b, the locking block 205 is matched with one end of the serrated step 110 close to the telescopic end of the opposite inner cylinder 107a, and when the opposite inner cylinder 107a is fully retracted into the opposite outer cylinder 107b, the locking block 205 is matched with one end of the serrated step 110 close to the connecting end of the opposite inner cylinder 107.

More specifically, in order to ensure that the locking block 205 is always engaged with the serrated step 110 during the extension of the telescopic joint member 100 and that the locking block 205 is disengaged from the serrated step 110 during the shortening of the telescopic joint member 100, when the telescopic joint member 110 is extended, the slider 204 is pushed by the spring energy storage member 300 to slide outwards along the opening of the sliding chute 203 and make the locking block 205 elastically abut against the serrated step 110 to achieve the engagement between the locking block 205 and the serrated step 110, and when the telescopic joint member 110 is shortened, the slider 204 is pulled by the spring energy storage member 300 to slide inwards along the opening of the sliding chute 203 and make the locking block 205 disengage from the serrated step 110 to achieve the disengagement between the locking block 205 and the serrated step 110.

In the working process of the locking component 200 and the extension process of the telescopic joint component 110, the locking block 205 is subjected to the thrust action of the spring energy storage component 300, the locking block 205 is always matched with the serrated step 10, and the locking block 205 is matched with the serrated step 110 to limit and fix the relative inner cylinder 107a and the relative outer cylinder 107b at any position to realize locking; when the telescopic joint member 110 needs to be shortened and switched to the shortened state, the locking block 205 is under the action of the pulling force of the spring energy storage member 300, the locking block 205 is released from being matched with the sawtooth-shaped step 110, and the relative inner cylinder 107a can be slidably retracted into the relative outer cylinder 107 b.

In order to facilitate the installation of the spring energy storage member 300, a fixed block 120 is arranged in the first telescopic cylinder 101, the fixed block 120 is positioned in the middle of the first telescopic cylinder 101 along the length direction, the spring energy storage member 300 comprises a hollow storage cylinder 301 with two open ends, the axial direction of the storage cylinder 301 is parallel to the length direction of the telescopic cylinder and is provided with two in parallel, the storage cylinder 301 comprises a floating storage cylinder matched with the box body 201 and a fixed storage cylinder fixed with the fixed block 120, one end of the storage cylinder 301 close to the telescopic end of the telescopic cylinder in an initial state is abutted against the bottom of the adjacent box body 201, in order to facilitate the matching of the floating storage cylinder and the installation box, a circular installation groove 208 parallel to the axial direction of the telescopic cylinder is arranged on one end surface of the box body 201 close to the telescopic end of the telescopic cylinder, the installation groove 208 is positioned in the middle of the, the outer disc of the floating containing cylinder is coaxially and fixedly sleeved with an annular external boss 302, the diameter of the external boss 302 is equal to that of the mounting groove 208, the floating containing cylinder movably penetrates through the box cover 202 to be inserted into the mounting groove 208, the external boss 302 and the mounting groove 208 form sliding guide fit along the axial direction parallel to the telescopic cylinder, and the external boss 302 can float up and down in the mounting groove 208 along the groove depth direction.

Specifically, in order to apply a pushing force to the locking block 205 when the telescopic joint member 110 is extended, when the telescopic joint member 110 is shortened, a pulling force is applied to the locking block 205, the slider 204 is provided with a through triggering chute 207, the through direction of the through triggering chute 207 is parallel to the distance direction of the two chutes 203 on the same side, the distance between the triggering chutes 207 on the sliders 204 on different sides is gradually increased along the direction from the connecting end of the telescopic cylinder to the telescopic end, the external step 302 is fixedly provided with two triggering posts 305 extending outwards along the radial direction of the external step 302, the triggering posts 305 are symmetrically arranged along the axial direction of the external step 302, the triggering posts 305 movably penetrate through the chutes 203 from the mounting grooves 208 and are inserted into the triggering chute 207, the triggering posts 305 are matched with the triggering chute 207 and form a sliding guide fit, the floating spring 304 is movably sleeved outside the floating accommodating cylinder 301, and one end of the floating spring 304 is abutted against the external step 302, The other end of the floating spring is abutted against the bottom of the mounting groove 208, and the elastic force of the floating spring 304 always points to the external step 302 from the bottom of the mounting groove 208, so that the floating spring 304 enables the floating storage cylinder to float towards the outside of the mounting groove 208, the triggering column 305 is matched with the triggering chute 207 to apply elastic thrust to the locking block 205, the locking block 205 is matched with the serrated step 110, and the locking effect in the extension process of the telescopic joint member 100 is met; by overcoming the elastic force of the floating spring 304, the external step 302 floats close to the bottom of the mounting groove 208, and the matching of the trigger column 305 and the trigger chute 207 forces the sliding block 204 to slide towards the sliding groove 203, so that a pulling force is applied to the locking block 205, the matching of the locking block 205 and the sawtooth-shaped step 110 is released, and the telescopic joint member 110 can be normally shortened.

More specifically, in order to drive the opposite inner cylinder 107a to slide outwards along the opposite outer cylinder 107b, the spring energy storage member 300 further includes driving springs 303 disposed between two adjacent mounting boxes and between the adjacent mounting box and the fixed block 120, the driving springs 303 are constrained in the floating storage cylinder and the fixed storage cylinder in an initial state, wherein one end of the driving spring 303 disposed in the fixed storage cylinder abuts against the fixed block 120, the other end abuts against the bottom of the adjacent box 201, and the elastic force of the driving spring 303 is always directed to the adjacent box 201 by the fixed block 120, wherein one end of the driving spring 303 disposed in the floating storage cylinder abuts against the groove bottom of the mounting groove 208, the other end abuts against the bottom of the adjacent box 201, and the elastic force of the driving spring 303 is always directed to the adjacent box 201 by the groove bottom of the mounting groove 208, by releasing the constraint on the driving spring 303, the elastic potential energy of the drive spring 303 is released and the opposite inner cylinder 107a is driven to slide toward the outside of the opposite outer cylinder 107 b.

More specifically, in order to facilitate control of the release amount of the elastic potential energy of the driving spring 303, so as to control the sliding length of the relative inner cylinder 107a towards the outside of the relative outer cylinder 107b, and further enable the telescopic joint member 100 to extend at a fixed length, for this reason, a through flat hole 209 is formed at the bottom of the mounting groove 208, a through flat hole 209 is formed on the fixing block 120, the spring energy storage member 300 further comprises two retractable steel belts 306 movably penetrating into the flat hole 209, the two steel belts 209 are arranged in parallel, one end of each steel belt 306 penetrates through the fixed storage cylinder, three floating storage cylinders are provided with lower pressing blocks 307 at the ends, the lower pressing blocks 307 are fixedly connected with the floating storage cylinders far away from the fixed storage cylinders, the other ends of the steel belts 306 are arranged in a retractable manner, the driving spring 303 is sleeved on the steel belts 306 and supported by the inner supports of the steel belts 306, the elastic potential energy of the driving spring 303 is released through the release amount of Measuring, namely, extending the telescopic joint member 100 in a fixed length; by retracting the steel band 306, the drive spring 303 is compressed to accumulate elastic potential energy, and the telescopic joint member 100 is shortened.

More specifically, in order to facilitate the winding and unwinding of the steel belt 306, an installation box 308 is fixedly arranged on one end face of the fixing block 120 close to the connecting end of the first telescopic cylinder 101, rollers 310 used for winding the steel belt 306 are rotatably arranged in the installation box 308, the axial direction of each roller 310 is perpendicular to the length direction of the first telescopic cylinder 101, two rollers 310 are arranged and correspond to the steel belt 306 one by one, guide wheels 309 axially parallel to the axial direction of the rollers 310 are rotatably arranged on the installation box 308, the guide wheels 309 are arranged close to the fixing block 120, the guide wheels 309 are arranged and correspond to the rollers 310 one by one, the other end of the steel belt 306 movably penetrates into the installation box 308, is wound on the opposite outer sides of the guide wheels 309 and then is fixedly connected with the outer circular surfaces of the corresponding rollers 310, and the winding and unwinding.

When the spring energy storage member 300 drives the telescopic joint member 100 to extend, specifically, the roller 310 is rotated to gradually release the steel belt 306, the steel belt 306 gradually releases the constraint on the driving spring 303, the elastic potential energy of the driving spring 303 is released and pushes the inner cylinder 107a to slide outwards along the outer cylinder 107b, namely, the second telescopic cylinder 102 slides outwards along the first telescopic cylinder 101, the third telescopic cylinder 103 slides outwards along the second telescopic cylinder 102, the fourth telescopic cylinder 104 slides outwards along the third telescopic cylinder 103, and the three operations are performed synchronously, the locking block 205 is matched with the serrated step 110 to limit and fix the position between the inner cylinder 107a and the outer cylinder 107b to realize locking, and the release amount of the elastic potential energy of the driving spring 303 is controlled by controlling the release amount of the steel belt 306 to control the release amount of the elastic potential energy of the driving spring 303 to extend the telescopic joint member 100 to a fixed length, and the telescopic joint member 100 is switched to a middle state/, in this process, three pairs of opposing inner cylinders 107a are extended synchronously with the opposing outer cylinders 107 b.

When the spring energy storage member 300 drives the telescopic joint member 100 to shorten, specifically, the roller 310 is rotated reversely to enable the steel belt 306 to be gradually retracted, the steel belt 306 pulls the lower pressing block 307 to move towards the connecting end of the telescopic cylinder, the lower pressing of the lower pressing block 307 enables the locking member 200 between the fourth telescopic cylinder 104 and the third telescopic cylinder 103 to release the limit constraint on the fourth telescopic cylinder 104 and the third telescopic cylinder 103, the fourth telescopic cylinder 104 slides towards the third telescopic cylinder 103 until the fourth telescopic cylinder 104 is completely retracted into the third telescopic cylinder 103, at this time, the box 201 in the fourth telescopic cylinder 104 presses down the floating storage cylinder in the third telescopic cylinder 103 and the locking member 200 between the third telescopic cylinder 103 and the second telescopic cylinder releases the limit constraint on the third telescopic cylinder 103 and the third telescopic cylinder 103 slides towards the second telescopic cylinder 102 until the third telescopic cylinder 103 is completely retracted into the second telescopic cylinder 102, at this time, the box 201 in the third telescopic cylinder 103 presses down the floating storage cylinder in the second telescopic cylinder 102 and enables the floating storage cylinder 102 to be completely retracted The locking member 200 between the second telescopic cylinder 102 and the first telescopic cylinder 101 releases the limit restriction of the two, the second telescopic cylinder 102 slides towards the first telescopic cylinder 102 until the second telescopic cylinder 102 is completely retracted into the first telescopic cylinder 101, the telescopic joint member 100 is switched to a shortened state, and in the process, the three pairs of the relative inner cylinder 107a and the relative outer cylinder 107b are shortened one by one.

In order to facilitate the quantitative control of the discharging of the steel belt 306, the electric control member 400 includes a second installation box 401, the second installation box 401 is fixedly connected with one end of the first installation box 308, which is far away from the fixed block 120, a worm 403 which is axially parallel to the length direction of the telescopic cylinder is rotatably arranged between the second installation box 401 and the side surface of the first installation box 308, the worm, wherein the driving end of the roller shaft of one roller 310 movably penetrates through the outer part of one side of the first installation box 308 and is coaxially and fixedly sleeved with a worm wheel 404 engaged with the worm 403, the output end of the roller shaft of the roller 310 movably penetrates through the outer part of the other side of the first installation box 308 and is coaxially and fixedly sleeved with a driving synchronizing gear 405, the driving end of the roller shaft of the other roller 310 movably penetrates through the outer part of the other side of the first installation box 308 and is coaxially and fixedly sleeved with a synchronizing driven gear 406, the, in order to drive the worm 403 to rotate, a stepping motor 402 is fixedly arranged outside the second mounting box 401, the output shaft of the stepping motor 402 is axially parallel to the axial direction of the worm 403 and extends into the second mounting box 401, a reduction driving gear 407 is coaxially fixedly sleeved on the output shaft of the stepping motor 402, the driving end of the worm 403 extends into the second mounting box 401 and is coaxially fixedly sleeved with a reduction driven gear 408, the reduction driving gear 407 is meshed with the reduction driven gear 408, and the diameter of the reduction driving gear 407 is smaller than that of the reduction driven gear 408.

In the working process of the electric control component 400, the stepping motor 402 is started, the deceleration driving gear 407 is matched with the deceleration driven gear 408 to transmit the power on the output shaft of the stepping motor 402 to the worm 403 and drive the worm 403 to rotate around the axial direction of the worm 403, the worm 403 drives the worm wheel 404 to rotate, the synchronous driving gear 405 is matched with the synchronous driven gear 406 to enable the two rollers 310 to synchronously rotate in opposite directions, the rollers 310 enable the steel belt 306 to be synchronously released or retracted, meanwhile, the stepping motor 402 is controlled through the controller, the fixed-length release of the steel belt 306 can be realized, and the telescopic joint component 100 is enabled to extend in a fixed length.

Claims

1. An electric control expansion method of a spring energy storage type expansion link comprises the following steps:

an elongation stage;

(II) shortening state;

2. The electric control telescoping method of a spring energy storage telescopic rod according to claim 1, wherein the locking member is fixedly installed at the opening of the connecting end of the opposite inner cylinder and extends outwards from the opposite inner cylinder to match with the opposite outer cylinder for locking, the locking member comprises a mounting box fixedly connected with the opening of the connecting end of the opposite inner cylinder and corresponding to the inside and outside of the external step, the mounting box comprises a rectangular box body with an opening pointing to the telescoping end of the opposite inner cylinder, the size of the rectangular box body is consistent with that of the opening of the opposite inner cylinder, the opposite side surfaces of the box body are respectively provided with a rectangular sliding chute penetrating to the upper end surface of the box body, the sliding chutes are provided with four and corresponding to each other in pairs, rectangular sliding blocks matched with the sliding chutes are arranged in the sliding chutes, the two sliding blocks correspondingly arranged can slide close to each other/far away from each other along the sliding chutes, and a locking, the extension end of the locking block is set to be an inclined plane, the distance between the inclined planes on the two correspondingly arranged locking blocks is gradually reduced along the directional telescopic end of the connecting end of the relative inner cylinder, and the opening of the box body is provided with a box cover matched with the box cover.

3. The electric control telescoping method of a spring energy storage type telescoping rod according to claim 2, wherein rectangular through holes corresponding to the locking blocks one by one are formed at the connecting end of the opposite inner cylinder, zigzag steps are arranged inside the opposite inner cylinder and arranged along the length direction of the opposite inner cylinder, the zigzag steps are four and matched with the zigzag steps and the locking blocks one by one, the zigzag steps are composed of horizontal tables and inclined tables which are alternately arranged, the horizontal tables are arranged towards the telescoping end of the opposite inner cylinder and used for connecting two adjacent horizontal tables, the locking blocks extend outwards from the rectangular through holes and are matched with the horizontal tables of the zigzag steps, one end face of each locking block close to the connecting end of the opposite inner cylinder is lined on the horizontal table of the zigzag steps to restrain the retraction motion of the opposite inner cylinder, and in the extension process of the telescopic joint member, the locking blocks elastically collide with the zigzag steps and can be directed towards the opposite inner cylinder from the connecting end of the opposite inner The telescopic end of the outer barrel slides in a single direction, when the relative inner barrel completely extends out of the relative outer barrel, the locking block is matched with one end, close to the telescopic end of the relative inner barrel, of the sawtooth-shaped step, and when the relative inner barrel completely retracts into the relative outer barrel, the locking block is matched with one end, close to the connecting end of the relative inner barrel, of the sawtooth-shaped step.

4. The electrical control telescoping method of claim 2, wherein when the telescopic member is extended, the slider slides outwardly along the opening of the sliding chute under the pushing force of the spring energy storage member and elastically pushes the locking block against the serrated step to achieve the engagement between the locking block and the serrated step, and when the telescopic member is shortened, the slider slides inwardly along the opening of the sliding chute under the pulling force of the spring energy storage member and disengages the locking block from the serrated step to achieve the disengagement between the locking block and the serrated step.

5. The method as claimed in claim 1, wherein the electric control member comprises a second mounting box fixedly connected to an end of the first mounting box away from the fixed block, a worm axially parallel to the length of the telescopic cylinder is rotatably disposed between the second mounting box and the first mounting box, wherein a driving end of a roller shaft of one of the rollers movably penetrates out of one side of the first mounting box and is coaxially and fixedly sleeved with a worm wheel engaged with the worm, an output end of the roller shaft movably penetrates out of the other side of the first mounting box and is coaxially and fixedly sleeved with a driving synchronizing gear, a driving end of a roller shaft of the other roller movably penetrates out of the other side of the first mounting box and is coaxially and fixedly sleeved with a synchronous driven gear, the synchronous driving gear is engaged with the synchronous driven gear and has the same diameter as the synchronous driven gear, the outer portion of the second installation box is fixedly provided with a stepping motor, the axial direction of an output shaft of the stepping motor is parallel to the axial direction of the worm, the output shaft extends into the second installation box, a speed reduction driving gear is coaxially fixed on the output shaft of the stepping motor, the driving end of the worm extends into the second installation box, a speed reduction driven gear is coaxially fixed on the end of the worm, the speed reduction driving gear is meshed with the speed reduction driven gear, and the diameter of the speed reduction driving gear is smaller than that of the speed reduction driven gear.