CN111996897A

CN111996897A - Lap joint bridge for irrigation ditch

Info

Publication number: CN111996897A
Application number: CN202010894044.9A
Authority: CN
Inventors: 奚邦建; 王勇; 陆永翠
Original assignee: Hefei Jianghai Intelligent Pumping Station Data Technology Co ltd
Current assignee: Hefei Yuankang Information Technology Co., Ltd
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2020-11-27
Anticipated expiration: 2040-08-31
Also published as: CN111996897B

Abstract

The invention discloses a lap joint bridge for a water conservancy irrigation ditch in the technical field of lap joint bridges for water conservancy irrigation ditches, which comprises a rectangular fixing plate and positioning plates, wherein two sides of the rectangular fixing plate are both hinged with segmented bridge bodies, and the end parts of the two segmented bridge bodies, far away from the rectangular fixing plate, are both fixedly connected with the positioning plates; according to the invention, the segmented bridge body is rotatably connected with the rectangular fixing plate, the lifting support legs, the first support rod and the second support rod support the bridge body, so that the bridge body can be rapidly unfolded when the bridge is used, the bridge body is supported by both the middle part and the bottom part, the bridge body is firm, and the bridge can be rapidly and completely folded after the bridge is used, so that the bridge body is more convenient to transport.

Description

Lap joint bridge for irrigation ditch

Technical Field

The invention relates to the field of lap-jointed bridges for irrigation ditches, in particular to a lap-jointed bridge for an irrigation ditch.

Background

Irrigation refers to the technology of utilizing engineering measures and modern equipment to block, regulate, control, distribute and use agricultural water resources, and combines agricultural technical measures to improve soil and cultivate fertilizer, so that the land utilization is enlarged, and the purposes of high and stable yield of agriculture are achieved. The ditch is the water course of introducing the farmland with water from the river in the agricultural irrigation, introduces different farmland with water through the ditch, and people need stride to the ditch opposite side when working from ditch one side, and the ditch that the width is shorter can directly stride, but has the danger of falling into in the ditch simultaneously, and the ditch that the width is longer need use some overlap joint bridges to cross.

But present irrigation is lap-joint bridge for ditch adopts both ends to fix the body of a bridge more, lacks the support of the both sides at middle part, and the steadiness of lap-joint bridge is relatively poor, when personnel walk about on the bridge many times, can take place to collapse and not hard up danger, and current lap-joint bridge structure is comparatively fixed, and the dismouting of being not convenient for is folding, has increased the degree of difficulty that the transportation carried.

Based on this, the invention designs a lap joint bridge for a water conservancy irrigation ditch to solve the problems.

Disclosure of Invention

The invention aims to provide a lap-joint bridge for a water conservancy irrigation ditch, and aims to solve the problems that the existing lap-joint bridge for the water conservancy irrigation ditch mostly adopts two ends to fix a bridge body, lacks support on two sides of the middle part, has poor stability, can collapse and loosen when personnel walk on the bridge for many times, has a fixed structure, is inconvenient to disassemble, assemble and fold and increases the difficulty in transportation and carrying.

In order to achieve the purpose, the invention provides the following technical scheme: a lap joint bridge for a water conservancy irrigation ditch comprises a rectangular fixed plate and positioning plates, wherein both sides of the rectangular fixed plate are hinged with segmented bridge bodies, the end parts of the two segmented bridge bodies, which are far away from the rectangular fixed plate, are fixedly connected with the positioning plates, the left side and the right side of each positioning plate are symmetrically provided with positioning grooves, the bottom of the rectangular fixed plate is fixedly connected with two symmetrically arranged lifting guide rails, the inner walls of the longitudinal rails of the two lifting guide rails are respectively and slidably connected with a block-shaped threaded sleeve, the bottom end of the front side of each lifting guide rail is rotatably connected with a lifting lead screw, the block-shaped threaded sleeves of the front side penetrate out of the lifting guide rails and are in threaded connection with the surfaces of the lifting lead screws, the inner sides of the two block-shaped threaded sleeves are jointly and fixedly connected with lifting support legs, the lifting support leg is sleeved with a clip-shaped sliding sleeve, the left side and the right side of the lifting support leg are fixedly connected with rectangular stop blocks, the top of each rectangular stop block is in contact with the bottom of the clip-shaped sliding sleeve, the left side and the right side of the clip-shaped sliding sleeve are hinged with two groups of first supporting rods, the top of each group of first supporting rods is slidably connected with a sliding shaft, the bottom of the segmented bridge body is provided with a T-shaped slide way in sliding fit with the sliding shaft, the front and the back of the bottom of the two segmented bridge bodies are fixedly connected with rectangular fastening plates, the middle of each rectangular fastening plate is provided with a rectangular through groove, each group of rectangular fastening plates is slidably connected with a sliding column through the rectangular through groove, the rear ends of the two sliding columns are fixedly connected with baffle discs, the front ends of the two sliding columns are slidably connected with baffle rings, the front ends of, the middle parts of the two sliding columns are fixedly connected with sliding stop blocks, the tops of the rectangular stop blocks are in contact with the T-shaped slide ways, the inner sides of the rectangular stop blocks are in contact with the top ends of the first supporting rods, the middle parts of the left side and the right side of the clip-shaped sliding sleeve are hinged with second supporting rods, the bottom ends of the left side and the right side of the lifting supporting legs are hinged with two groups of supporting legs which are combined in pairs, and the top of each group of supporting legs is rotatably connected with the end part, away from the clip-shaped sliding sleeve, of;

when the bridge is in operation, the prior lap-joint bridge for irrigation channels mostly adopts two ends to fix the bridge body, the two sides of the middle part are not supported, when personnel walk on the bridge for many times, the risk of collapse can occur, the prior lap-joint bridge has a more fixed structure, the bridge body is not convenient to disassemble, assemble and fold, the difficulty of transportation and carrying is increased, the segmented bridge body is placed at the two ends of the channel, the segmented bridge body is fixedly connected at the two ends of the channel through positioning grooves, the lifting screw rod is rotated by utilizing a rotating mechanism, the lifting screw rod is rotated to drive the lifting support leg to move downwards, the lifting support leg is descended to the bottom of the channel to support the segmented bridge body, when the lifting support leg descends, the support leg is driven to move downwards, the support leg drives the clip sliding sleeve to move downwards, so that the clip sliding sleeve is always positioned above the rectangular stop block, the clip sliding sleeve moves downwards to drive the top end, after the adjustment of the lifting screw rod is completed, the position of the sliding column is adjusted to be extruded along with the top of the first supporting rod, the clip-shaped sliding sleeve is contacted with the rectangular stop block while the first supporting rod is extruded, the supporting leg is completely opened to block the outer side of the first supporting rod, the nut is fastened by a spanner, the nut extrudes the stop ring and the stop disc to position the sliding stop block, so that the first supporting rod, the lifting supporting leg and the lifting screw rod form a triangular frame structure to stably support the segmented bridge body, after the use is completed, the nut is loosened to slide the sliding column to two sides, the rotating mechanism is rotated reversely to withdraw the lifting supporting leg, when the lifting supporting leg rises, the rectangular stop block acts on the clip-shaped sliding sleeve to move the lifting supporting leg upwards, meanwhile, the top of the first supporting rod slides to the outer side, after the lifting supporting leg is withdrawn, the lap-joint bridge is taken out, the two segmented bridge bodies are, the tops of the first supporting rods slide outwards in the segmented bridge body, when the first supporting rods turn to the horizontal position, the first supporting rods slide to the outermost ends of the T-shaped sliding grooves, the segmented bridge body is continuously turned downwards, the T-shaped sliding grooves block the first supporting rods, at the moment, the T-shaped sliding grooves have force along the rod direction on the first supporting rods, so that the clip-shaped sliding sleeves are pushed to slide upwards on the lifting supporting legs, the clip-shaped sliding sleeves slide upwards to drive the second supporting rods to rotate upwards, the second supporting rods are hinged with the supporting legs, so that the supporting legs on two sides rotate inwards together, when the segmented bridge body turns to the vertical position, the clip-shaped sliding sleeves move to the highest position, the supporting legs on two sides are folded, the lap-joint bridge is completely folded, the lap-joint bridge can be unfolded quickly when being used, and both sides of the middle part and the bottom part form supports for the bridge body, the bridge body is firm, after the use is, the lap-joint bridge can be folded completely and the bridge body can be transported more conveniently.

As a further scheme of the invention, the bottom of the lifting leg is slidably connected with a rectangular sliding plate through a sliding chute, the rear side of the rectangular sliding plate is fixedly connected with two first sliding rods, the two first sliding rods both penetrate through the lifting leg and are slidably connected with the lifting leg, each first sliding rod is sleeved with a first spring, one end of each first spring is fixedly connected with the rear side of the rectangular sliding plate, the other end of each first spring is fixedly connected with the inner wall of the rear side of the sliding chute of the lifting leg, the rear side of the lifting leg is fixedly connected with a clip-shaped fixing plate, a rectangular blocking strip is slidably connected inside the clip-shaped fixing plate and is inserted into the two first sliding rods, the bottom of the rectangular blocking strip is fixedly connected with a top block, the left side and the right side of the top of the rectangular blocking strip are fixedly connected with second sliding rods, the second sliding rods penetrate through the clip-shaped fixing plate and are slidably connected, one end of the second spring is fixedly connected to the top of the rectangular barrier strip, the other end of the second spring is fixedly connected to the inner wall of the clip-shaped fixing plate, the rear ends of the two first sliding rods are fixedly connected with a sliding strip together, and the bottom of the lifting guide rail on the rear side is fixedly connected with a guide block used for acting with the sliding strip; when the bridge is used, when the lifting supporting leg is retracted, the sliding strip and the guide block act, the sliding strip moves backwards, the sliding strip drives the first sliding rod to move backwards, the first sliding rod drives the rectangular sliding plate to return to the initial position, the rectangular blocking strip acts on the second spring, and the rectangular blocking strip limits the first sliding rod again, therefore, when the lifting supporting legs descend, the supporting area of the lifting supporting legs is increased, the lifting supporting legs are more stable to the lap joint support, and when the lifting supporting legs are retracted, the rectangular sliding plate is retracted, so that the rectangular sliding plate cannot interfere with other components, and the folding of a lap joint bridge cannot be influenced.

As a further scheme of the invention, the outer sides of the four supporting legs are rotatably connected with positioning pins through connecting shafts, the surfaces of the connecting shafts are sleeved with torsion springs, two ends of each torsion spring are respectively and fixedly connected to the inner sides of the positioning pins and the side surfaces of the supporting legs, the top of each positioning pin is fixedly connected with a connecting column, the surface of each connecting column is fixedly connected with a pull rope, and one end of each pull rope, far away from the connecting column, is fixedly connected to the side surface of the lifting supporting leg through a fastening cylinder; the during operation, because lift landing leg bottom is the plane, can only carry out extrusion contact with the ditch, when rivers are great in the ditch, the lateral impact force needs the mounting at overlap joint bridge both ends to support completely, long-time work, it is not hard up to probably cause the overlap joint bridge, connect the locating pin through torsional spring rotation in four supporting leg outsides, when the overlap joint bridge is opened, first bracing piece effect time shape slip cap makes its downstream, drive second bracing piece downstream when time shape slip cap downstream, prop the supporting leg open, when the supporting leg open, stay cord effect spliced pole, make the locating pin upset to vertical state, when lift landing leg descends to support, the locating pin inserts the ditch bottom, fix a position the lift support, increase the stability of overlap joint bridge.

As a further scheme of the invention, U-shaped protective shells are sleeved at the inner ends of the two segmented bridge bodies, the outer ends of the U-shaped protective shells are fixedly connected to the segmented bridge bodies through screws, and the inner ends of the U-shaped protective shells are lapped on a rectangular fixing plate; the during operation, because the segmentation pontic of both sides all rotates with the rectangle fixed plate to be connected, the overlap joint bridge is located the ditch both sides, when making a round trip to move, personnel can take earth out and fall into the turned position, influence the folding of overlap joint bridge, through the equal fixedly connected with U type protecting crust in segmentation pontic inner, U type protecting crust overlap joint is on the rectangle fixed plate, thereby realize the protection to segmentation pontic and rectangle fixed plate rotation junction, and U type protecting crust overturns the restriction to segmentation pontic and rectangle fixed plate, strengthen the stability of overlap joint bridge.

As a further scheme of the invention, the rotating mechanism comprises a rotating disc, the rotating disc is fixedly connected to the top end of the lifting screw rod and is nested in the rectangular fixing plate, a flower-shaped slot is formed in the rotating disc, a rotating handle is matched with the flower-shaped slot, the lower part of the rotating handle is in a flower shape matched with the flower-shaped slot, and the upper part of the rotating handle is in a cylindrical shape; the during operation, because it needs to adopt slewing mechanism to rotate the lift lead screw, and rotate and need set up the top at the pontic, can not lead to the fact unreasonable influence to personnel's coming and going, through at lift lead screw top fixedly connected with carousel, set up the flower type spout in the carousel, when needs rotate the lift lead screw, will rotate the handle and insert in the flower type spout, it drives the lift lead screw and rotates to rotate the carousel, after adjusting the completion, will rotate the handle and take out, thereby realize rotating the lift lead screw, will rotate the handle and take out when need not to rotate, do not influence personnel's coming and going.

As a further scheme of the invention, the bottom of the inner wall of the flower-shaped slot is fixedly connected with a third spring, the top of the third spring is fixedly connected with a flower-shaped baffle, the flower-shaped baffle is in sliding connection with the flower-shaped slot, and the top surface of the flower-shaped baffle is flush with the top surface of the rectangular fixing plate; during operation, because the overlap joint bridge sets up in the ditch both sides, personnel come and go and can cause and carry out debris in the flower type spout, influence the grafting of rotating the handle, through set up the third spring bottom the flower type spout, third spring top fixed connection flower type separation blade, when rotating the handle and being taken out, third spring action flower type separation blade rises its bullet, prevents that the personnel that come and go from taking debris into the flower type spout in, influence the grafting of rotating the handle.

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

1. according to the invention, the segmented bridge body is rotatably connected with the rectangular fixing plate, the lifting support legs, the first support rod and the second support rod support the bridge body, so that the bridge body can be rapidly unfolded when the bridge is used, the bridge body is supported by both the middle part and the bottom part, the bridge body is firm, and the bridge can be rapidly and completely folded after the bridge is used, so that the bridge body is more convenient to transport.

2. According to the invention, when the lifting support leg descends, the rectangular sliding plate extends out, so that the supporting area of the lifting support leg is increased, the lapping support is more stable, and when the lifting support leg is retracted, the rectangular sliding plate is retracted, so that the rectangular sliding plate is not interfered with other components, and the folding of the lapping bridge is not influenced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a first perspective view of the present invention;

FIG. 2 is an enlarged view of the structure of FIG. 1 at A in accordance with the present invention;

FIG. 3 is a partial cross-sectional view of a segmented bridge according to the present invention;

FIG. 4 is an enlarged view of the structure of FIG. 3 at B in accordance with the present invention;

FIG. 5 is a schematic view of a rectangular fastening plate according to the present invention;

FIG. 6 is an enlarged view of the structure of FIG. 5 at C in accordance with the present invention;

FIG. 7 is a cross-sectional view of a lifting leg and a segmented pontic of the present invention;

fig. 8 is an enlarged view of the structure of fig. 7 at D according to the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

the device comprises a rectangular fixing plate 1, a positioning plate 2, a segmented bridge body 3, a positioning groove 4, a lifting guide rail 5, a block-shaped threaded sleeve 501, a lifting support leg 6, a lifting screw rod 7, a clip-shaped sliding sleeve 8, a rectangular stop block 9, a first support rod 10, a sliding shaft 11, a T-shaped slideway 12, a rectangular fastening plate 13, a rectangular through groove 14, a sliding column 15, a blocking disc 16, a blocking ring 17, a nut 18, a second support rod 19, a support leg 20, a rectangular sliding plate 21, a first sliding rod 22, a first spring 23, a clip-shaped fixing plate 24, a rectangular stop strip 25, a top block 26, a second sliding rod 27, a second spring 28, a sliding strip 29, a guide block 30, a torsion spring 31, a positioning pin 32, a connecting column 33, a pull rope 34, a fastening cylinder 35, a U-shaped protective shell 36, a rotating disc 37, a flower-shaped slot 38, a rotating handle 39, a.

Detailed Description

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

Referring to fig. 1-8, the present invention provides a technical solution: a lap joint bridge for a water conservancy irrigation ditch comprises a rectangular fixed plate 1 and positioning plates 2, sectional bridge bodies 3 are hinged on two sides of the rectangular fixed plate 1, the end parts of the two sectional bridge bodies 3, which are far away from the rectangular fixed plate 1, are fixedly connected with the positioning plates 2, positioning grooves 4 are symmetrically arranged on the left side and the right side of each positioning plate 2, two symmetrically arranged lifting guide rails 5 are fixedly connected at the bottom of the rectangular fixed plate 1, block-shaped thread sleeves 501 are respectively and slidably connected on the inner walls of longitudinal rails of the two lifting guide rails 5, a lifting screw rod 7 is rotatably connected at the bottom end of the front side of each lifting guide rail 5, the block-shaped thread sleeves 501 penetrate through the lifting guide rails 5 and are in threaded connection with the surfaces of the lifting screw rods 7, lifting support legs 6 are fixedly connected at the inner sides of the two block-shaped thread sleeves 501 together, the top ends of the, a clip-shaped sliding sleeve 8 is sleeved on a lifting support leg 6, rectangular stop blocks 9 are fixedly connected to the left side and the right side of the lifting support leg 6, the top of each rectangular stop block 9 is in contact with the bottom of the clip-shaped sliding sleeve 8, two groups of first support rods 10 are hinged to the left side and the right side of the clip-shaped sliding sleeve 8, a sliding shaft 11 is slidably connected to the top of each group of first support rods 10, a T-shaped slideway 12 in sliding fit with the sliding shaft 11 is arranged at the bottom of the segmented bridge body 3, rectangular fastening plates 13 are fixedly connected to the front and the back of the bottoms of the two segmented bridge bodies 3, a rectangular through groove 14 is arranged in the middle of each rectangular fastening plate 13, a sliding column 15 is slidably connected to each group of rectangular fastening plates 13 through the rectangular through groove 14, a baffle disc 16 is fixedly connected to the rear ends of the two sliding columns 15, a baffle ring 17 is slidably connected to the front, the middle parts of the two sliding columns 15 are fixedly connected with sliding stop blocks 42, the top parts of the rectangular stop blocks 9 are in contact with the T-shaped slide ways 12, the inner sides of the rectangular stop blocks are in contact with the top ends of the first supporting rods 10, the middle parts of the left side and the right side of the clip-shaped sliding sleeves 8 are respectively hinged with a second supporting rod 19, the bottom ends of the left side and the right side of the lifting supporting legs 6 are respectively hinged with two groups of supporting legs 20 which are combined in pairs, and the top parts of each group of supporting legs 20 are respectively in rotating connection with the end parts;

when the bridge is in operation, the existing lap-joint bridge for irrigation canal mostly adopts two ends to fix the bridge body, the two sides of the middle part are not supported, when personnel walk on the bridge for many times, the danger of collapse can occur, the existing lap-joint bridge structure is relatively fixed, the bridge body is not convenient to disassemble, assemble and fold, the difficulty of transportation and carrying is increased, the segmented bridge body 3 is placed at the two ends of the canal, the segmented bridge body is fixedly connected at the two ends of the canal by the positioning grooves 4, the lifting screw rod 7 is rotated by the rotating mechanism, the lifting screw rod 7 is rotated to drive the lifting supporting legs 6 to move downwards, the lifting supporting legs 6 are descended to the bottom of the canal to support the segmented bridge body 3, when the lifting supporting legs 6 descend, the supporting legs 20 are driven to move downwards, the supporting legs 20 drive the clip sliding sleeve 8 to move downwards, so that the clip is always positioned above the rectangular stop block 9, the clip sliding sleeve moves downwards to drive the top end of the first, after the lifting screw 7 is adjusted, the position of the sliding column 15 is adjusted to be extruded along with the top of the first supporting rod 10, the clip sliding sleeve is contacted with the rectangular stop block 9 while the first supporting rod 10 is extruded, the supporting leg 20 is completely opened to block the outer side of the first supporting rod 10, the nut 18 is fastened by a wrench, the nut 18 extrudes the stop ring 17 and the stop disc 16 to position the sliding stop block 17, so that the first supporting rod 10, the lifting supporting leg 6 and the lifting screw 7 form a tripod structure to stably support the segmental bridge body 3, after the use is finished, the nut 18 is loosened to slide the sliding column 15 to two sides, the rotating mechanism is rotated reversely to withdraw the lifting supporting leg 6, when the lifting supporting leg 6 rises, the rectangular stop block 9 acts on the clip sliding sleeve 8 to make the lifting supporting leg move upwards, and simultaneously, the top of the first supporting rod 10 slides outwards, after the lifting support legs 6 are retracted, the lap-joint bridge is taken out, the two segmented bridge bodies 3 are turned inwards, the tops of the first support rods 10 slide outwards in the segmented bridge bodies 3, when the first support rods 10 are turned to the horizontal position, the first support rods 10 slide to the outermost ends of the T-shaped sliding grooves 12, the segmented bridge bodies 3 continue to be turned downwards, the T-shaped sliding grooves 12 block the first support rods 10, at the moment, the T-shaped sliding grooves 12 exert force on the first support rods 10 along the rod direction to push the clip-shaped sliding sleeves 8 to slide upwards on the lifting support legs 6, the clip-shaped sliding sleeves 8 slide upwards to drive the second support rods 19 to rotate upwards, the second support rods 19 are hinged with the support legs 20, so that the support legs 20 on the two sides rotate inwards together, when the segmented bridge bodies 3 are turned to the vertical position, the clip-shaped sliding sleeves 8 move to the highest position, the support legs on the two sides 20 are folded, and the lap-joint bridge is, thereby realize can be quick when using the overlap joint bridge expand it to middle part and bottom both sides all form the support to the bridge body, and the bridge body is firm, uses the completion back, can fold the overlap joint bridge completely fast, makes the more convenient transportation of bridge body.

As a further scheme of the invention, the bottom of the lifting leg 6 is slidably connected with a rectangular sliding plate 21 through a sliding chute, the rear side of the rectangular sliding plate 21 is fixedly connected with two first sliding rods 22, the two first sliding rods 22 both penetrate through the lifting leg 6 and are slidably connected with the lifting leg 6, each first sliding rod 22 is sleeved with a first spring 23, one end of each first spring 23 is fixedly connected with the rear side of the rectangular sliding plate 21, the other end of each first spring 23 is fixedly connected with the inner wall of the rear side of the sliding chute of the lifting leg 6, the rear side of the lifting leg 6 is fixedly connected with a clip-shaped fixing plate 24, the inside of the clip-shaped fixing plate 24 is slidably connected with a rectangular barrier strip 25, the rectangular barrier strip 25 is inserted into the two first sliding rods 22, the bottom of the rectangular barrier strip 25 is fixedly connected with a top block 26, the left side and the right side of the top of the rectangular barrier strip 25 are both fixedly connected with second, one end of a second spring 28 is fixedly connected to the top of the rectangular barrier strip 25, the other end of the second spring is fixedly connected to the inner wall of the clip-shaped fixing plate 24, the rear ends of the two first sliding rods 22 are fixedly connected with a sliding strip 29 together, and the bottom of the rear lifting guide rail 5 is fixedly connected with a guide block 30 which is used for acting with the sliding strip 29; when the bridge is in use, the bottom of the lifting support leg 6 is supported at the bottom of the water channel, the support area of the lifting support leg 6 is too small, so that the stability of the bridge is reduced, the rectangular sliding plate 21 is connected to the bottom of the lifting support leg 6 in a sliding manner, when the lifting support leg 6 descends to interact with the water channel, the top block 26 acts on the bottom of the water channel before acting, the top block 26 is pushed upwards, the top block 26 moves upwards to drive the rectangular barrier strip 25 to slide upwards along the square-shaped fixing plate 24, the limit on the first sliding rod 22 is given up, the first sliding rod 22 is popped up under the action of the first spring 23 to interact with the water channel, so that the support area of the lifting support leg 6 is increased, when the bridge is used, the lifting support leg 6 is withdrawn, the sliding strip 29 acts with the guide block 30, the sliding strip 29 moves towards the rear side, the sliding strip 29 drives the first sliding rod 22 to move backwards, and the first sliding rod 22 drives the, the second spring 28 acts on the rectangular barrier strip 25 to enable the rectangular barrier strip 25 to limit the first sliding rod 22 again, so that when the lifting support leg 6 descends, the supporting area of the lifting support leg 6 is increased, the lapping support is more stable, and when the lifting support leg 6 is retracted, the rectangular sliding plate 21 is retracted, so that the rectangular sliding plate cannot interfere with other components, and the folding of the lapping bridge cannot be influenced.

As a further scheme of the invention, the outer sides of the four supporting legs 20 are rotatably connected with positioning pins 32 through connecting shafts, torsion springs 31 are sleeved on the surfaces of the connecting shafts, two ends of each torsion spring 31 are respectively and fixedly connected to the inner sides of the positioning pins 32 and the side surfaces of the supporting legs 20, the top of each positioning pin 32 is fixedly connected with a connecting column 33, the surface of each connecting column 33 is fixedly connected with a pull rope 34, and one end of each pull rope 34, far away from the connecting column 33, is fixedly connected to the side surface of the lifting supporting leg 6 through; the during operation, because 6 bottoms of lift landing leg are the plane, can only carry out extrusion contact with the ditch, when rivers are great in the ditch, the lateral impact force needs the mounting at overlap joint bridge both ends completely to support, long-time work, it is not hard up to probably cause the overlap joint bridge, rotate through torsional spring 31 in four supporting legs 20 outsides and connect locating pin 32, when the overlap joint bridge is opened, first bracing piece 10 is used back shape slip cap 8 and is made its downstream, it drives second bracing piece 19 downstream to return shape slip cap 8 during the downstream, prop supporting leg 20 open, when supporting leg 20 struts, stay cord 34 is used in spliced pole 35, make locating pin 32 overturn to vertical state, when 6 descends to support as lift landing leg, locating pin 32 inserts the ditch bottom, fix a position the lift support, increase the stability of overlap joint bridge.

As a further scheme of the invention, U-shaped protective shells 36 are sleeved at the inner ends of two segmented bridge bodies 3, the outer ends of the U-shaped protective shells 36 are fixedly connected to the segmented bridge bodies 3 through screws, and the inner ends are lapped on the rectangular fixing plate 1; the during operation, because the segmentation pontic 3 of both sides all rotates with rectangle fixed plate 1 to be connected, the overlap joint bridge is located the ditch both sides, when making a round trip to move, personnel can take earth out and fall into the rotational position, influence the folding of overlap joint bridge, through at 3 inner equal fixedly connected with U type protecting crust 36 of segmentation pontic, 36 laps of U type protecting crust are on rectangle fixed plate 1, thereby realize the protection to segmentation pontic 3 and rectangle fixed plate 1 rotation junction, and U type protecting crust 36 overturns the restriction to segmentation pontic 3 and rectangle fixed plate 1, strengthen the stability of overlap joint bridge.

As a further scheme of the invention, the rotating mechanism comprises a rotating disc 37, the rotating disc 37 is fixedly connected to the top end of the lifting screw rod 7 and is nested in the rectangular fixing plate 1, a flower-shaped slot 38 is formed in the rotating disc 37, the flower-shaped slot 38 is matched with a rotating handle 39, the lower part of the rotating handle 39 is in a flower shape matched with the flower-shaped slot 38, and the upper part of the rotating handle 39 is in a cylindrical shape; the during operation, because it needs to adopt slewing mechanism to rotate lift lead screw 7, and rotate and need to set up the top at the pontic, can not lead to the fact unreasonable influence to personnel's coming and going, through at 7 top fixedly connected with rotating disc 37 of lift lead screw, set up flower type spout 38 in the rotating disc 37, when needing to rotate lift lead screw 7, will rotate handle 39 and insert in the flower type spout 38, rotate rotating disc 37 and drive lift lead screw 7 and rotate, after the regulation is accomplished, will rotate handle 39 and take out, thereby realize rotating lift lead screw 7, will rotate handle 39 and take out when need not to rotate, do not influence personnel's coming and going.

As a further scheme of the invention, the bottom of the inner wall of the flower-shaped slot 38 is fixedly connected with a third spring 40, the top of the third spring 40 is fixedly connected with a flower-shaped blocking sheet 41, the flower-shaped blocking sheet 41 is in sliding connection with the flower-shaped slot 38, and the top surface of the flower-shaped blocking sheet 41 is flush with the top surface of the rectangular fixing plate 1; during operation, because the overlap joint bridge sets up in the ditch both sides, personnel come and go and can cause and carry out debris in the flower-shaped chute 38, influence the grafting of rotating handle 39, through set up third spring 40 in flower-shaped chute 38 bottom, third spring 40 top fixed connection flower type separation blade 41, when rotating handle 39 and being taken out, third spring 40 effect flower type separation blade 41 rises its bullet, prevent that the personnel that come and go from taking into flower-shaped chute 38 with debris in, influence the grafting of rotating handle 39.

The working principle is as follows: the segmented bridge body 3 is placed at two ends of a water channel, the segmented bridge body is fixedly connected at two ends of the water channel through the positioning grooves 4, the lifting screw rod 7 is rotated by the rotating mechanism, the lifting screw rod 7 rotates to drive the lifting supporting leg 6 to move downwards, the lifting supporting leg 6 is lowered to the bottom of the water channel to support the segmented bridge body 3, when the lifting supporting leg 6 descends, the supporting leg 20 is driven to move downwards, the supporting leg 20 drives the clip-shaped sliding sleeve 8 to move downwards to be always positioned above the rectangular stop block 9, the clip-shaped sliding sleeve moves downwards to drive the top end of the first supporting rod 10 to move towards the left side, after the adjustment of the lifting screw rod 7 is completed, the position of the sliding column 15 is adjusted to form extrusion along with the top of the first supporting rod 10, the clip-shaped sliding sleeve is in contact with the rectangular stop block 9 while the first supporting rod 10 is extruded, the supporting leg 20 is completely opened to block the outer side of the first, then a spanner is used for fastening the nut 18, the nut 18 extrudes the stop ring 17 and the stop disc 16 to position the sliding stop 17, after the use is finished, the nut 18 is loosened, the sliding column 15 slides to two sides, the rotating mechanism is rotated reversely, the lifting support leg 6 is retracted, when the lifting support leg 6 ascends, the rectangular stop 9 acts on the clip-shaped sliding sleeve 8 to enable the sliding sleeve to move upwards, meanwhile, the top of the first support rod 10 slides outwards, after the lifting support leg 6 retracts, the lap-joint bridge is taken out, the two segmented bridge bodies 3 are turned inwards, the top of the first support rod 10 slides outwards in the segmented bridge body 3, when the first support rod 10 is turned to the horizontal position, the first support rod 10 slides to the outermost end of the T-shaped sliding groove 12, the segmented bridge body 3 is continuously turned downwards, the T-shaped sliding groove 12 blocks the first support rod 10, at the moment, the T-shaped sliding groove 12 has force along the rod direction on the first support rod 10, thereby promote back shape slip cap 8 and upwards slide on lift landing leg 6, back shape slip cap 8 upwards slides and drives second bracing piece 19 and upwards rotate, and second bracing piece 19 is articulated with supporting leg 20 to make the supporting leg 20 of both sides rotate to the inboard together, when segmentation pontic 3 overturns vertical position, back shape slip cap 8 moves the highest position, and both sides supporting leg 20 is folded, will overlap the bridge and fold completely.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a lap joint bridge for irrigation ditch, includes rectangle fixed plate (1) and locating plate (2), its characterized in that: the two sides of the rectangular fixing plate (1) are hinged with segmented bridge bodies (3), the end parts, far away from the rectangular fixing plate (1), of the two segmented bridge bodies (3) are fixedly connected with positioning plates (2), the left side and the right side of each positioning plate (2) are symmetrically provided with positioning grooves (4), the bottom of the rectangular fixing plate (1) is fixedly connected with two symmetrically arranged lifting guide rails (5), the inner walls of the longitudinal rails of the two lifting guide rails (5) are respectively and slidably connected with a block-shaped threaded sleeve (501), the bottom end of the front side of each lifting guide rail (5) is rotatably connected with a lifting lead screw (7), the block-shaped threaded sleeve (501) of the front side penetrates through the lifting guide rails (5) and is in threaded connection with the surface of the lifting lead screw (7), the inner sides of the two block-shaped threaded sleeves (501) are fixedly connected with lifting support legs (6) together, and the top end of the, and the lifting screw rod (7) is rotatably connected to the bottom of the rectangular fixing plate (1), the lifting support leg (6) is sleeved with a clip-shaped sliding sleeve (8), the left side and the right side of the lifting support leg (6) are fixedly connected with rectangular stop blocks (9), the top of each rectangular stop block (9) is contacted with the bottom of the clip-shaped sliding sleeve (8), the left side and the right side of the clip-shaped sliding sleeve (8) are respectively hinged with two groups of first supporting rods (10), the top of each first supporting rod (10) is respectively and slidably connected with a sliding shaft (11), the bottom of the segmented bridge body (3) is provided with a T-shaped slide way (12) which is in sliding fit with the sliding shaft (11), the front and the back of the bottom of the segmented bridge body (3) are respectively and fixedly connected with a rectangular fastening plate (13), the middle part of each rectangular fastening plate (13) is provided with a rectangular through groove (14), and each group of the, the rear ends of the two sliding columns (15) are fixedly connected with a baffle disc (16), the front ends of the two sliding columns are connected with a baffle ring (17) in a sliding way, the front ends of the surfaces of the two sliding columns (15) are provided with threaded surfaces, the screw thread surfaces are all in threaded connection with nuts (18), the middle parts of the two sliding columns (15) are all fixedly connected with sliding stop blocks (42), the tops of the rectangular stop blocks (9) are in contact with the T-shaped slide ways (12), the inner sides of the two support rods are contacted with the top end of the first support rod (10), the middle parts of the left side and the right side of the clip-shaped sliding sleeve (8) are respectively hinged with a second support rod (19), the left and right sides of the bottom of the lifting supporting leg (6) are hinged with two groups of pairwise combined supporting legs (20), and the top of each group of supporting legs (20) is rotatably connected with the end part, far away from the clip-shaped sliding sleeve (8), of the second supporting rod (19) through a rotating shaft.

2. The bridge joint of claim 1, wherein: the bottom of the lifting supporting leg (6) is connected with a rectangular sliding plate (21) in a sliding mode through a sliding groove, the rear side of the rectangular sliding plate (21) is fixedly connected with two first sliding rods (22), the two first sliding rods (22) penetrate through the lifting supporting leg (6) and are connected with the lifting supporting leg in a sliding mode, each first sliding rod (22) is sleeved with a first spring (23), one end of each first spring (23) is fixedly connected to the rear side of the rectangular sliding plate (21), the other end of each first spring (23) is fixedly connected to the inner wall of the rear side of the sliding groove of the lifting supporting leg (6), the rear side of the lifting supporting leg (6) is fixedly connected with a clip-shaped fixing plate (24), a rectangular blocking strip (25) is connected to the inner portion of the clip-shaped fixing plate (24) in a sliding mode, the rectangular blocking strip (25) is inserted into the two first sliding rods (22), the bottom of the rectangular blocking strip (25) is fixedly connected with, second slide bar (27) run through back shape fixed plate (24) and rather than sliding connection, two all the cover is equipped with second spring (28) on second slide bar (27), second spring (28) one end fixed connection is at rectangle blend stop (25) top, and other end fixed connection is on the inner wall of returning shape fixed plate (24), two first slide bar (22) rear end fixedly connected with slides rectangular (29), the rear side lift guide (5) bottom fixedly connected with be used for with slide rectangular (29) the guide block (30) of effect.

3. The bridge joint of claim 1, wherein: four the supporting leg (20) outside all rotates through the connecting axle and is connected with locating pin (32), the connecting axle has cup jointed torsional spring (31) on the surface, the both ends difference fixed connection of torsional spring (31) is inboard in locating pin (32) and supporting leg (20) side, every the equal fixedly connected with spliced pole (33) in locating pin (32) top, every the equal fixedly connected with stay cord (34) on the surface of spliced pole (33), the one end that spliced pole (33) were kept away from in stay cord (34) is through fastening cylinder (35) fixed connection in lifting support leg (6) side.

4. The bridge joint of claim 1, wherein: two the inner of segmentation pontic (3) all is equipped with U type protecting crust (36), screw fixed connection is passed through on segmentation pontic (3) in U type protecting crust (36) outer end, and the inner overlap joint is on rectangle fixed plate (1).

5. The bridge joint of claim 1, wherein: slewing mechanism includes carousel (37), carousel (37) fixed connection is on lift lead screw (7) top, and its nestification is in rectangle fixed plate (1), seted up flower type slot (38) in carousel (37), flower type slot (38) cooperation has rotation handle (39), rotation handle (39) lower part be with flower type slot (38) complex flower type, upper portion is cylindrical.

6. The bridge joint of claim 5, wherein: the flower type slot (38) inner wall bottom fixedly connected with third spring (40), third spring (40) top fixedly connected with flower type separation blade (41), flower type separation blade (41) and flower type slot (38) sliding connection, and its top surface flushes with rectangle fixed plate (1) top surface.