CN114411576B - Supporting device for culvert construction and using method thereof - Google Patents

Abstract

The utility model belongs to the technical field of the technique of culvert support equipment and specifically relates to a strutting arrangement and application method for culvert construction is related to, and it includes crossbeam pole and ejector pin, the bottom both ends of crossbeam pole are provided with the supporting leg respectively, the ejector pin set up in the top of crossbeam pole, just the top surface both sides of crossbeam pole be provided with respectively be used for with ejector pin both ends articulated hinge bolt, the top of crossbeam pole is provided with many bracing pieces, many the top of bracing piece be provided with respectively be used for with the first coupling mechanism that the ejector pin is connected, many the bottom of bracing piece be provided with respectively be used for with the second coupling mechanism that the crossbeam pole is connected. This application has the effect that improves the application scope who is used for supporting the strutting arrangement of culvert.

Description

Supporting device for culvert construction and using method thereof

Technical Field

The application relates to the technical field of culvert supporting equipment, in particular to a supporting device for culvert construction and a using method thereof.

Background

The culvert is a drainage duct which is arranged below a roadbed and built below a road surface in order to ensure that a highway smoothly passes through a channel without hindering traffic, can allow water to flow through the lower surface of the highway by the structure and be used for draining flood across natural valley depression areas, or be used as an interchange channel for people, livestock and vehicles across large and small roads, or be used as a channel for farmland irrigation, and mainly comprises a culvert body, a foundation, an end, wing walls and the like.

At present culvert building in the work progress, strutting arrangement commonly used supports the inner wall of culvert to avoid the culvert to collapse as far as possible. The supporting device for supporting the culvert comprises a supporting top frame, supporting legs are fixed to the periphery of the bottom of the supporting top frame, and when the culvert is required to be supported, the supporting top frame supports the inner top wall of the culvert under the matching effect of the supporting legs so as to support the culvert building.

In the course of implementing the present application, the inventors found that there are at least the following problems in the art, and the shape of the culvert generally includes a tubular shape, a box shape, an arch shape, etc., and because the arcs of the arch-shaped culvert have different arc lengths, the existing supporting devices for supporting the culvert cannot be adapted to culverts of different shapes.

Disclosure of Invention

In order to improve the application range of the supporting device for supporting the culvert, the application provides the supporting device for culvert construction and the using method thereof.

The application provides a supporting device for culvert construction and a using method thereof, which adopt the following technical scheme:

the utility model provides a strutting arrangement is used in culvert construction, includes crossbeam pole and ejector pin, the bottom both ends of crossbeam pole are provided with the supporting leg respectively, the ejector pin set up in the top of crossbeam pole, just the top surface both sides of crossbeam pole be provided with respectively be used for with ejector pin both ends articulated hinge bolt, the top of crossbeam pole is provided with many bracing pieces, many the top of bracing piece be provided with respectively be used for with the first coupling mechanism that the ejector pin is connected, many the bottom of bracing piece be provided with respectively be used for with the second coupling mechanism that the crossbeam pole is connected.

Through adopting above-mentioned technical scheme, when needs support the culvert, place strutting arrangement in the culvert earlier, then adjust the supporting leg, make strutting arrangement erect in the culvert, then according to the shape of culvert, increase or subtract the length of weak point ejector pin, make the ejector pin be arc form or rectangle form, rethread articulated bolt is ejector pin and crossbeam pole interconnect after that, loop through first coupling mechanism again at last, second coupling mechanism will many bracing pieces respectively with ejector pin and crossbeam pole fixed connection, the ejector pin supports tightly in the inner wall of culvert this moment, the realization supports the culvert, and then be favorable to improving the application scope who is used for supporting the strutting arrangement of culvert.

Optionally, the ejector pin includes many articulated sub-poles, every one side of articulated sub-pole is provided with articulated ear, every the opposite side of articulated sub-pole is provided with articulated seat, many articulated sub-pole can be dismantled in proper order through articulated ear and articulated seat respectively and articulate.

Through adopting above-mentioned technical scheme, when needs support the culvert of different shapes, the total length of the inner wall of elder generation culvert, and when needs increase the ejector pin, articulated sub-pole adjacent each other is articulated through articulated ear and articulated seat, and finally make many articulated sub-poles cooperate the inner wall of culvert and support tightly, when needs subtract the short ejector pin, also can dismantle unnecessary articulated sub-pole through articulated ear and articulated seat, and then be favorable to improving the application scope who is used for supporting the strutting arrangement of culvert.

Optionally, the first connecting mechanism includes the connecting rod, the swing hole has been seted up to one side of articulated ear, the connecting rod articulate in the swing hole, the top of bracing piece articulates there is a plurality of locking levers, and is a plurality of the locking lever encloses to close and forms connection space, the connecting rod with connection space pegs graft, a plurality of locked grooves have been seted up to the lateral wall correspondence of connecting rod, and is a plurality of the locking lever is respectively with a plurality of the locked groove is pegged graft, the bracing piece is provided with and is used for many the locking lever is fixed in fixed subassembly in the locked groove.

Through adopting above-mentioned technical scheme, when needs support the ejector pin, peg graft in connection space with the connecting rod earlier, then do not swing a plurality of locking levers towards the direction that is close to connection space again, a plurality of locking levers are pegged graft respectively in a plurality of locked grooves this moment, be fixed in a plurality of locked grooves simultaneously through fixed subassembly again in a plurality of locked grooves, bracing piece and articulated sub-pole fixed connection this moment, and the bracing piece can support the ejector pin, and then be favorable to improving the stability that the ejector pin supported the culvert inner wall.

Optionally, the fixing assembly includes a locking ring and a locking spring, the locking ring is slidably sleeved on the top end of the support rod, a limit ring is disposed on the side wall of the support rod, the locking spring is sleeved on the support rod, one end of the locking spring is connected with the limit ring, the other end of the locking spring is connected with the locking ring, and a butting ring is disposed on the side wall of the connecting rod.

Through adopting above-mentioned technical scheme, when the catch removed towards the direction of keeping away from the connecting rod, the catch compressed tightly locking spring, but the locking lever this moment swung to peg graft the locking lever in the locked groove, when releasing the catch when putting one's hands, locking spring release elasticity this moment, locking spring drives the direction removal that the catch is close to articulated sub-pole, the locking lever is located to the catch cover this moment, the catch supports tightly in one side of butt ring, the connecting rod is fixed in connecting space, and then is favorable to improving bracing piece and articulated sub-pole fixed connection's stability.

Optionally, the second connecting mechanism includes a lock nut, the lock nut is sleeved on the bottom end of the support rod, the bottom end of the support rod is provided with a slip-off prevention ring, the slip-off prevention ring abuts against the inner top wall of the lock nut, the top of the beam rod is correspondingly provided with a fixing screw, and the lock nut is in threaded connection with the fixing screw.

By adopting the technical scheme, when needs are fixed bracing piece and crossbeam pole mutually, will earlier the bottom butt of bracing piece in clamping screw's top, then screw up lock nut again, under lock nut's effect, bracing piece and crossbeam pole fixed connection this moment, and then be favorable to improving the stability that the bracing piece supported the ejector pin.

Optionally, the top of ejector pin is provided with the guard plate, the top surface of ejector pin is provided with the fender ear of restriction guard plate removal.

Through adopting above-mentioned technical scheme, when needs do further support protection to the culvert, under the effect that keeps off the ear, can locate the top of ejector pin with the guard plate lid, and be located between two adjacent strutting arrangement, the guard plate can carry out certain strut to the inner wall of culvert this moment, can avoid leaking of culvert inner wall to drip and the soil falls simultaneously as far as possible.

Optionally, the supporting leg articulates in the top of crossbeam pole, the crossbeam pole is provided with the hinge mechanisms who is used for fixing the supporting leg, hinge mechanisms includes swing seat, swing seat set up in the bottom surface of crossbeam pole, the top of supporting leg swing in swing seat, swing seat is provided with the spacing subassembly that is used for fixing the supporting leg.

Through adopting above-mentioned technical scheme, when needs erect the crossbeam pole in the culvert, earlier swing the supporting leg towards the direction of keeping away from the crossbeam pole, under spacing subassembly's effect, the supporting leg is the vertical form with the crossbeam pole each other this moment, and the crossbeam pole erects in the culvert through the supporting leg, and then is favorable to improving the stability that strutting arrangement supported the culvert inner wall.

Optionally, spacing subassembly includes gag lever post and limiting spring, the top of supporting leg is run through and is provided with the perforation, the gag lever post slide in the perforation, limiting spring set up in the perforation, limiting spring's one end with the perforation inner wall is connected, limiting spring's the other end with the gag lever post lateral wall is connected, the both sides of swing seat are run through and are provided with the orbit hole, the orbit hole includes first spacing sub-hole, swing sub-hole and second spacing sub-hole, the perforation is run through respectively at the both ends of gag lever post, just the both ends of gag lever post respectively with first spacing sub-hole, swing sub-hole and second spacing sub-hole sliding connection.

Through adopting the above technical scheme, when the supporting leg is folded in the crossbeam pole bottom, the gag lever post was arranged in first spacing downthehole this moment, and limiting spring is in natural state, when needs drive the supporting leg towards the direction swing of keeping away from the crossbeam pole, drive the gag lever post earlier and break away from in first spacing subpore, the gag lever post compresses tightly limiting spring this moment, then swing the supporting leg again, the gag lever post slides along swing subpore, and when supporting leg and crossbeam pole mutually perpendicular, spacing spring release elasticity, and it is downthehole to drive the gag lever post and slide into the second spacing subpore, the supporting leg is fixed in the current position, and then be favorable to improving the convenience that the supporting leg was accomodate or was used.

A using method of a supporting device for culvert construction comprises the following steps:

s1: preparing a plurality of supporting devices, and respectively distributing the supporting devices in a linear array along the length direction of the culvert;

s2: swinging the supporting legs towards the direction far away from the beam rod, fixing the supporting legs at the current position through a limiting assembly, and erecting the supporting device in the culvert at the moment;

s3: preparing a plurality of hinged sub-rods according to the shape and size of the culvert, then mutually hinging the plurality of hinged sub-rods to form an adjusting ejector rod, and then respectively hinging two ends of the adjusting ejector rod with two sides of the top surface of the cross beam rod;

s4: the plurality of hinged sub-rods are abutted against the inner wall of the culvert, then the top ends of the supporting rods are fixedly connected with the hinged sub-rods through the first connecting mechanism, the bottom ends of the supporting rods are fixedly connected with the cross beam rod through the second connecting mechanism, and the inner wall of the culvert is supported and supported by the plurality of hinged sub-rods together;

s5: and finally, covering a protection plate on the top of the adjacent supporting device to finish supporting.

Through adopting above-mentioned technical scheme, bracing piece, crossbeam pole and supporting leg cooperate the ejector pin jointly to put into corresponding inner arc according to the shape of culvert and support the inner wall of culvert, and then are favorable to improving the application scope that is used for supporting the strutting arrangement of culvert.

To sum up, the application comprises the following beneficial technical effects:

when needs support the culvert, place strutting arrangement in the culvert earlier, then adjust and fixed support leg through hinge mechanisms, make strutting arrangement erect in the culvert, then according to the shape of culvert, increase or subtract the length of weak point roof bar, make the roof bar be arc form or rectangle form, rethread articulated bolt is ejector pin and crossbeam pole interconnect after that, loop through first coupling mechanism again at last, second coupling mechanism with many bracing pieces respectively with ejector pin and crossbeam pole fixed connection, the ejector pin supports tightly in the inner wall of culvert this moment, the realization supports the culvert, and then be favorable to improving the application scope of the strutting arrangement who is used for supporting the culvert.

Drawings

FIG. 1 is a schematic view illustrating an overall structure of a culvert supported by three supporting devices for culvert construction;

FIG. 2 is a schematic view illustrating the overall structure of the supporting device for culvert construction according to the present invention;

FIG. 3 is a front view of the supporting device for culvert construction according to the present application;

fig. 4 is an enlarged view of a portion a of fig. 3;

FIG. 5 is a schematic view of the connection of adjacent hinge sub-rods of the present application;

FIG. 6 is a schematic view of the overall construction of a first connection mechanism of the present application;

fig. 7 is an overall structural view of the second connecting mechanism of the present application.

Description of reference numerals: 1. a beam rod; 11. a swing seat; 12. a trace hole; 121. a first stopper sub-hole; 122. swinging the sub-holes; 123. a second stopper sub-hole; 13. fixing the screw rod; 2. a top rod; 21. a hinged sub-rod; 22. a hinge lug; 221. a swing hole; 23. a hinged seat; 24. blocking the lug; 3. supporting legs; 31. perforating; 4. a support bar; 41. a lock lever; 42. a connection space; 43. a limiting ring; 44. the anti-drop ring; 5. a limiting rod; 51. a limiting spring; 6. a connecting rod; 61. locking the groove; 62. a butting ring; 7. a locking ring; 71. locking the spring; 8. locking the nut; 9. and (4) a protective plate.

Detailed Description

The present application is described in further detail below with reference to figures 1-7.

Example (b):

referring to fig. 1 to 3, a plurality of supporting devices for culvert construction are provided, in this embodiment, three supporting devices for culvert construction are provided, and the cross section of the upper top of the culvert is arc-shaped. The inner wall of the culvert is supported by the three culvert construction supporting devices together. Strutting arrangement for culvert construction includes crossbeam pole 1 and ejector pin 2, and crossbeam pole 1 is the level setting, and the bottom surface both ends of crossbeam pole 1 are provided with supporting leg 3 respectively, erects crossbeam pole 1 in the culvert through two supporting legs 3, and crossbeam pole 1 is equipped with and is used for folding the hinge mechanisms who accomodates or use supporting leg 3. The ejector rod 2 is used for abutting against and supporting the inner wall of the culvert, the ejector rod 2 is located at the top of the cross beam rod 1, two ends of the ejector rod 2 are hinged to two ends of the top face of the cross beam rod 1 respectively, and hinged bolts are arranged at two hinged ends of the ejector rod 2 and the cross beam rod 1 respectively, so that the ejector rod 2 and the cross beam rod 1 can be detached at any time. The top of crossbeam pole 1 is equipped with many bracing pieces 4, and many bracing pieces 4 are vertical setting respectively, and the top of many bracing pieces 4 supports ejector pin 2, and many bracing pieces 4 are equipped with respectively and are used for with 2 fixed connection's of ejector pin first coupling mechanism. The bottom of many spinal branch vaulting poles 4 is fixed crossbeam pole 1, and many spinal branch vaulting poles 4 are equipped with respectively and are used for with crossbeam pole 1 fixed connection's second coupling mechanism.

It should be noted that, referring to fig. 1, the support legs 3 are telescopic legs, and the telescopic legs are fixed by bolts, so that the support device for culvert construction can be applied to culverts of different heights.

Specifically, referring to fig. 3 and 4, the hinge mechanism includes two swing seats 11, and the two swing seats 11 are correspondingly disposed, and the two swing seats 11 are respectively fixed at two ends of the bottom of the beam rod 1. The top ends of the two supporting legs 3 swing in the two swing seats 11 respectively, and the two swing seats 11 are provided with limiting assemblies for fixing the two supporting legs 3 respectively. When the supporting device for the culvert is required to be erected, the two supporting legs 3 swing towards the direction far away from the beam rod 1 respectively, and when the two supporting legs 3 are perpendicular to the beam rod 1, the two supporting legs 3 are fixed at the current position through the limiting assemblies respectively, and the supporting device for the culvert is erected in the culvert at the moment.

Specifically, referring to fig. 3 and 4, the limiting assembly includes a limiting rod 5 and a limiting spring 51. A through hole 31 is formed through one side of the top of the support leg 3, and the through hole 31 is formed along the vertical direction of the support leg 3. The limiting rod 5 is horizontally arranged, and the limiting rod 5 moves in the through hole 31. The limiting spring 51 is arranged in the through hole 31, one end of the limiting spring 51 is fixedly connected with the inner wall of the through hole 31, and the other end of the limiting spring 51 is fixedly connected with the side wall of the limiting rod 5. Track holes 12 correspondingly penetrate through two sides of the swing seat 11, each track hole 12 comprises a first limiting sub-hole 121, a swing sub-hole 122 and a second limiting sub-hole 123, the first limiting sub-hole 121, the swing sub-hole 122 and the second limiting sub-hole 123 are communicated with each other, the swing sub-hole 122 is arc-shaped, the first limiting sub-hole 121 and the second limiting sub-hole 123 are communicated with two ends of the swing sub-hole 122 respectively, and two ends of the limiting rod 5 are connected with the first limiting sub-hole 121, the swing sub-hole 122 and the second limiting sub-hole 123 in a sliding mode respectively. When the limiting rod 5 is arranged in the first limiting sub-hole 121, the limiting spring 51 is in a natural state, and the supporting leg 3 is folded and accommodated at the bottom of the beam rod 1; when the supporting leg 3 swings in the direction away from the beam rod 1, the limiting spring 51 is in a pressing state at the moment, and the limiting rod 5 slides in the swing sub-hole 122; when the limiting rod 5 is arranged in the second limiting sub-hole 123, the limiting spring 51 is in a natural state at the moment, and the supporting leg 3 is perpendicular to the beam rod 1.

Referring to fig. 3 and 5, in order to facilitate the adaptation of the top bar 2 to different shapes of culverts, the top bar 2 comprises a plurality of articulated sub-bars 21. The number of the hinge sub-rods 21 is prepared according to actual requirements, one side of each hinge sub-rod 21 is fixed with a hinge lug 22, the other side of each hinge sub-rod 21 is fixed with a hinge seat 23, adjacent hinge sub-rods 21 are hinged with each other through the hinge lug 22 and the hinge seat 23, and the mutually hinged structure of the adjacent hinge sub-rods 21 is consistent with the hinged structure of the beam rod 1.

When needs support the culvert inner wall with ejector pin 2, because the interior roof of culvert is the arc form, many articulated sub-poles 21 are the obtuse angle setting each other this moment, and the wherein one end of every articulated sub-pole 21 supports in the inner wall of culvert, and many articulated sub-poles 21 form ejector pin 2 and support the inner wall of culvert jointly.

It is worth mentioning that, referring to fig. 3, in order to cooperate with the ejector rod 2 to support the inner wall of the culvert, the support rod 4 is also a telescopic rod, and the support rod 4 is also fixed at different telescopic lengths through bolts.

Specifically, referring to fig. 6, the first connecting mechanism includes a connecting rod 6, a swing hole 221 is formed through a side of the hinge lug 22 away from the hinge sub-rod 21, and the connecting rod 6 rotates in the swing hole 221. The top of bracing piece 4 articulates there is locking lever 41, and the quantity of locking lever 41 is equipped with four, and four locking levers 41 are the annular array along the vertical axis of connecting rod 6 respectively and distribute, and four locking levers 41 enclose to close and form the connection space 42 that supplies connecting rod 6 to peg graft. Four locking grooves 61 are correspondingly formed in the side wall of the connecting rod 6, the four locking rods 41 are respectively inserted into the four locking grooves 61, and when the four locking rods 41 are respectively inserted into the four locking grooves 61, the connecting rod 6 is fixed in the connecting space 42, and the connecting rod 6 is fixedly connected with the supporting rod 4.

Referring to fig. 6, in order to improve the stability of the four locking rods 41 inserted into the four locking grooves 61, the support rod 4 is provided with a fixing assembly, which includes a locking ring 7 and a locking spring 71. The side wall fixing ring of the support rod 4 is provided with a limiting ring 43, the locking ring 7 is slidably sleeved on the support rod 4, and the locking ring 7 is located on one side of the limiting ring 43 facing the connecting rod 6. The locking spring 71 is sleeved on the support rod 4, the locking spring 71 is arranged between the locking ring 7 and the limiting ring 43, one end of the locking spring 71 is fixedly connected with the locking ring 7, and the other end of the locking spring 71 is fixedly connected with the limiting ring 43. The side wall fixing ring of the connecting rod 6 is provided with a butting ring 62.

When the locking ring 7 moves in a direction away from the connecting rod 6, the locking ring 7 presses the locking spring 71, the locking spring 71 stores elastic force, the four locking rods 41 can swing freely at this time, so that the locking rods 41 are inserted into the four locking grooves 61, when the locking ring 7 is released, the locking spring 71 releases the elastic force, the locking spring 71 drives the locking ring 7 to swing in a direction close to the connecting rod 6, the locking ring 7 abuts against one side of the abutting ring 62, and the locking rod 41 is fixed in the locking groove 61.

Specifically, referring to fig. 7, the second connecting mechanism includes a lock nut 8, and the lock nut 8 is slidably sleeved on the support rod 4. The bottom end side wall fixed ring of bracing piece 4 is equipped with anticreep ring 44, and anticreep ring 44 is used for avoiding lock nut 8 to drop from bracing piece 4 as far as possible. The top of the beam rod 1 is fixed with a fixing screw rod 13, the fixing screw rod 13 is vertically arranged, and the locking nut 8 is in threaded connection with the fixing screw rod 13.

When the supporting rod 4 and the beam rod 1 need to be fixed to each other, the bottom end of the supporting rod 4 is abutted to the top of the fixing screw rod 13, then the locking nut 8 is screwed, and the supporting rod 4 is fixedly connected with the beam rod 1 at the moment.

It should be noted that, referring to fig. 2, in order to prevent the inner wall of the culvert from leaking water and dropping and the soil from falling as much as possible, the top of the top rod 2 is covered with a protection plate 9, and the protection plate 9 is located between two adjacent supporting devices for culvert construction. A stop lug 24 is fixed on one side of the plurality of hinged sub-rods 21 facing the inner wall of the culvert, and the stop lug 24 is used for limiting the movement of the protection plate 9. And because the protection plate 9 is abutted against the inner wall of the culvert, the protection plate 9 also has the function of supporting the inner wall of the culvert.

A using method of a supporting device for culvert construction comprises the following steps:

s1: preparing three supporting devices for culvert construction, and distributing the three supporting devices for culvert construction in a linear array along the length of the culvert according to the length of the culvert;

s2: the limiting rod 5 is separated from the first limiting sub-hole 121, then the supporting leg 3 is swung towards the direction far away from the beam rod 1, when the limiting rod 5 passes through the swinging sub-hole 122 and is inserted into the second limiting sub-hole 123, the supporting leg 3 and the beam rod 1 are mutually vertical at the moment, the supporting leg 3 is fixed at the current position, and the supporting device for culvert construction is erected in the culvert at the moment;

s3: preparing a plurality of hinged sub-rods 21 according to the arc length of the inner top wall of the culvert, then mutually hinging the plurality of hinged sub-rods 21 together, and simultaneously hinging two hinged sub-rods 21 with the cross beam rod 1;

s4: then, the plurality of hinged sub-rods 21 are preliminarily abutted along the arc length direction of the inner top wall of the culvert, the connecting rod 6 is inserted into the connecting space 42, the locking rod 41 is driven to swing towards the direction close to the locking groove 61, the locking ring 7 is sleeved outside the locking rod 41 under the action of the locking spring 71 and the locking ring 7, and the supporting rod 4 is fixedly connected with the hinged sub-rods 21; then, the locking nut 8 is screwed down, the supporting rod 4 is fixedly connected with the beam rod 1, and the ejector rod 2 supports the inner wall of the culvert under the action of the supporting rod 4;

s5: and finally, covering a protection plate 9 on the top of the adjacent supporting device for culvert construction to finish the support.

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

Claims (4)

1. The utility model provides a strutting arrangement is used in culvert construction which characterized in that: the supporting device comprises a cross beam rod (1) and ejector rods (2), wherein supporting legs (3) are arranged at two ends of the bottom of the cross beam rod (1) respectively, the ejector rods (2) are arranged at the top of the cross beam rod (1), hinge bolts used for being hinged with two ends of the ejector rods (2) are arranged on two sides of the top surface of the cross beam rod (1) respectively, a plurality of supporting rods (4) are arranged at the top of the cross beam rod (1), first connecting mechanisms used for being connected with the ejector rods (2) are arranged at the tops of the supporting rods (4) respectively, and second connecting mechanisms used for being connected with the cross beam rod (1) are arranged at the bottoms of the supporting rods (4) respectively;

the top rod (2) comprises a plurality of hinged sub-rods (21), a hinged lug (22) is arranged on one side of each hinged sub-rod (21), a hinged seat (23) is arranged on the other side of each hinged sub-rod (21), and the hinged sub-rods (21) are sequentially detachably hinged through the hinged lugs (22) and the hinged seats (23);

the first connecting mechanism comprises a connecting rod (6), a swinging hole (221) is formed in one side of the hinging lug (22), the connecting rod (6) is hinged in the swinging hole (221), a plurality of locking rods (41) are hinged to the top of the supporting rod (4), a plurality of locking rods (41) are enclosed to form a connecting space (42), the connecting rod (6) is connected with the connecting space (42) in an inserting mode, a plurality of locking grooves (61) are correspondingly formed in the side wall of the connecting rod (6), the locking rods (41) are respectively connected with the locking grooves (61) in an inserting mode, and the supporting rod (4) is provided with a fixing component used for fixing the locking rods (41) in the locking grooves (61);

the fixing assembly comprises a locking ring (7) and a locking spring (71), the locking ring (7) is slidably sleeved at the top end of the supporting rod (4), a limiting ring (43) is arranged on the side wall of the supporting rod (4), the locking spring (71) is sleeved on the supporting rod (4), one end of the locking spring (71) is connected with the limiting ring (43), the other end of the locking spring (71) is connected with the locking ring (7), and a butting ring (62) is arranged on the side wall of the connecting rod (6);

the second connecting mechanism comprises a locking nut (8), the locking nut (8) is sleeved at the bottom end of the supporting rod (4), an anti-falling ring (44) is arranged at the bottom end of the supporting rod (4), the anti-falling ring (44) abuts against the inner top wall of the locking nut (8), a fixing screw rod (13) is correspondingly arranged at the top of the cross beam rod (1), and the locking nut (8) is in threaded connection with the fixing screw rod (13);

the top of ejector pin (2) is provided with guard plate (9), the top surface of ejector pin (2) is provided with fender ear (24) that restriction guard plate (9) removed.

2. The supporting device for culvert construction according to claim 1, characterized in that: the supporting leg (3) articulate in the top of crossbeam pole (1), crossbeam pole (1) is provided with and is used for fixing the hinge mechanisms of supporting leg (3), hinge mechanisms includes swing seat (11), swing seat (11) set up in the bottom surface of crossbeam pole (1), the top of supporting leg (3) swing in swing seat (11) is interior, swing seat (11) are provided with and are used for fixing the spacing subassembly of supporting leg (3).

3. The supporting device for culvert construction according to claim 2, characterized in that: spacing subassembly includes gag lever post (5) and spacing spring (51), the top of supporting leg (3) is run through and is provided with perforation (31), gag lever post (5) slide in perforation (31), spacing spring (51) set up in perforation (31), the one end of spacing spring (51) with perforation (31) inner wall is connected, the other end of spacing spring (51) with gag lever post (5) lateral wall is connected, the both sides of swing seat (11) are run through and are provided with orbit hole (12), orbit hole (12) include first spacing sub-hole (121), swing sub-hole (122) and second spacing sub-hole (123), the both ends of gag lever post (5) run through perforation (31) respectively, just the both ends of gag lever post (5) respectively with first spacing sub-hole (121), swing sub-hole (122) and second spacing sub-hole (123) sliding connection.

4. A using method of a supporting device for culvert construction is characterized in that: the supporting device for culvert construction according to any one of claims 1-3, comprising the steps of:

s1: preparing a plurality of supporting devices, and respectively distributing the supporting devices in a linear array along the length direction of the culvert;

s2: swinging the supporting legs (3) towards the direction far away from the beam rod (1), fixing the supporting legs (3) at the current position through a limiting assembly, and erecting the supporting device in the culvert at the moment;

s3: preparing a plurality of hinged sub-rods (21) according to the shape and size of the culvert, mutually hinging the plurality of hinged sub-rods (21) to form an adjusting ejector rod (2), and hinging two ends of the adjusting ejector rod (2) with two sides of the top surface of the cross beam rod (1) respectively;

s4: the method comprises the following steps that a plurality of hinged sub-rods (21) are abutted against the inner wall of the culvert, then the top ends of supporting rods (4) are fixedly connected with the hinged sub-rods (21) through a first connecting mechanism, the bottom ends of the supporting rods (4) are fixedly connected with a cross beam rod (1) through a second connecting mechanism, and at the moment, the inner wall of the culvert is supported and supported by the hinged sub-rods (21) together;

s5: and finally, covering a protection plate (9) on the top of the adjacent supporting device to finish supporting.

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