CN112227188B

CN112227188B - Bridge leg depth limiter suitable for emergency rescue and disaster relief at breach of dam in yellow river water conservancy

Info

Publication number: CN112227188B
Application number: CN202011067723.5A
Authority: CN
Inventors: 陈兆东; 代潇男; 刘林林; 李鹏; 靖继承
Original assignee: Dai Xiaonan
Current assignee: Dai Xiaonan
Priority date: 2020-10-07
Filing date: 2020-10-07
Publication date: 2022-03-11
Anticipated expiration: 2040-10-07
Also published as: CN112227188A

Abstract

The utility model discloses a bridge leg depth limiter suitable for emergency rescue and disaster relief at a breach of a water conservancy dam of a yellow river, relates to the technical field of river management, and solves the problems that the bridge leg depth limiter used at present needs to be fixedly installed at the bottom of a bridge leg through splicing, is complex to operate and cannot be continuously spliced and assembled at the part of the bridge leg exposed out of the water surface. The bridge leg depth limiter is suitable for emergency rescue and disaster relief at breach of water conservancy dykes and dams of yellow river and comprises a central plate and a locking device; the middle of the front side of the central plate is integrally provided with a shaft bracket A, the middle of the shaft bracket A is rotatably provided with a driven shaft A and a driven shaft B, the outer side of the driven shaft A is provided with a worm, the outer side of the driven shaft B is provided with a worm wheel, the driven shaft A and the driven shaft B are in transmission connection through the worm wheel and the worm, and the central plate and the side plates are arranged to assist in conveying the leg plates; the central plate and the side plates can be locked and fixed outside the bridge pier through a mechanical structure, and can be suitable for fixing bridges with different widths.

Description

Bridge leg depth limiter suitable for emergency rescue and disaster relief at breach of dam in yellow river water conservancy

Technical Field

The utility model relates to the technical field of river management, in particular to a bridge leg depth limiter for emergency rescue and disaster relief at a breach of a water conservancy dam of a yellow river.

Background

The stream breach has great harm, for example, in 1998, rivers such as Yangtze river, Songhua river and the like in China successively generate extra-large flood, and great economic loss and casualties are brought to city and county around the river. The current breach blocking technology is adopted to block the breach finally. However, the cost of piling is very tragic because it requires personnel to stand in the torrent for construction.

Through search, for example, patent No. CN201821283294.3 discloses a bridge leg depth limiter for preventing settlement and instability of emergency bridges, and IPC classification No. E02B 1/00. The bridge leg depth limiter comprises an upper disc, a lower disc, a middle rotary disc, a fastening nail and a rotating shaft pin, wherein a movable block and the middle rotary disc are placed in a groove corresponding to the lower disc, the front end inclined plane of a limit short arm of the middle rotary disc is matched with the front end inclined plane of the movable block, so that the bridge leg depth limiter is in a state to be locked, the upper disc is placed on the lower disc, and the upper disc, the middle disc and the lower disc are connected through the rotating shaft pin. The bridge leg depth limiter can be used for rescue and relief work at a breach of a dam, and solves the problems of low bearing capacity and inclination instability of a fast-built temporary bridge during rescue and relief work.

However, the currently used bridge leg depth limiter needs to be fixedly installed at the bottom of a bridge leg in an assembling mode, is complex in operation, cannot be continuously assembled and assembled on the part, exposed out of the water surface, of the bridge leg, and is pushed into the water to fix a bridge, so that the safety is poor, and the installation is inconvenient, and therefore the existing requirements are not met.

Disclosure of Invention

Problem (A)

The utility model aims to provide a bridge leg depth limiter suitable for emergency rescue and disaster relief at a breach of a dam in the water conservancy of the yellow river, and aims to solve the problems that the currently used bridge leg depth limiter in the background technology needs to be fixedly installed at the bottom of a bridge leg through splicing, is complex to operate, cannot be continuously spliced and assembled at the part of the bridge leg exposed out of the water surface, and is pushed into the water to fix a bridge, so that the safety is poor and the installation is inconvenient.

(II) technical scheme

In order to achieve the purpose, the utility model provides the following technical scheme: the bridge leg depth limiter is suitable for emergency rescue and disaster relief at breach of water conservancy dykes and dams of yellow river and comprises a central plate and a locking device; the central plate also comprises a shaft bracket A, a driven shaft B, a transmission shaft A, a shaft bracket B and a driven shaft C; a shaft bracket A is integrally arranged in the middle of the front side of the central plate, a driven shaft A and a driven shaft B are rotatably arranged in the middle of the shaft bracket A, a worm is arranged on the outer side of the driven shaft A, a worm wheel is arranged on the outer side of the driven shaft B, and the driven shaft A and the driven shaft B are in transmission connection through the worm and gear; a protruding plate is arranged on one side of the front end of the shaft bracket A, a transmission shaft A is rotatably arranged in the protruding plate, and the transmission shaft A is in transmission connection with a driven shaft A through a bevel gear; a shaft bracket B is integrally arranged on one side of the front bottom of the central plate, a driven shaft C is rotatably arranged in the shaft bracket B, and a worm wheel is arranged outside the driven shaft C; two groups of side plates are arranged on two sides of the central plate in a sliding manner; clamping plates are arranged on the rear sides of the side plates in a sliding mode; a hand lever is arranged at the rear side of the clamping plate; the outer side of the side plate is vertically provided with a sliding chute, and the outer side of the side plate is provided with a leg plate in a sliding manner through the sliding chute; the locking device also comprises a telescopic rod and a buckle A; the one end integral type of telescopic link is provided with buckle A, has seted up the screw in the middle of the other end of telescopic link.

Preferably, the central plate further comprises a shaft bracket C, a linkage shaft sleeve, a hexagonal rod and a transmission gear; a shaft bracket C is integrally arranged in the middle of the front bottom of the central plate, and a linkage shaft sleeve is rotatably arranged in the middle of the shaft bracket C; a worm wheel is fixedly arranged outside the linkage shaft sleeve, and the driven shaft C and the linkage shaft sleeve are in transmission connection through a worm and gear; two sides of the linkage shaft sleeve are provided with two groups of hexagonal rods in a telescopic sliding mode, the outer ends of the hexagonal rods are respectively and rotatably arranged at the front ends of the side plates, and transmission gears are fixedly arranged at the outer ends of the hexagonal rods.

Preferably, the side plate further comprises a sliding inserted link, a rack A and a reset link; square holes are formed in two sides of the central plate; one side of the front end of the side plate is integrally provided with a sliding inserted bar which is arranged in square grooves at two sides of the central plate in a sliding manner; the front end of the side plate is integrally provided with a rack A, and the outer side of the driven shaft B is provided with a synchronous gear meshed with the two sets of racks A; the rear end of the side plate is fixedly provided with a reset rod, and the reset rod penetrates through the clamping plate to be sleeved with the spring and is fixedly provided with a blocking piece.

Preferably, the clamping plate further comprises a clamping cylinder; the front side of the clamping plate is of a transverse corrugated structure, the rear side of the clamping plate is fixedly provided with a clamping cylinder, and a round hole is vertically formed in the middle of the clamping cylinder.

Preferably, the hand lever further comprises a side block, an insertion block and a bolt; two groups of side blocks are fixedly arranged at two ends of the hand lever; two groups of insertion blocks are arranged outside the hand lever in a sliding manner; the fixed bolt that is provided with in the outside bottom of inserted block, the bolt can pass through clearance fit fixed set up in the round hole in the middle of the card section of thick bamboo.

Preferably, the leg plate further comprises a connecting pin hole, a connecting pin and a rack B; the top of the leg plate is provided with four groups of connecting pin holes, and connecting pins are fixedly arranged in the connecting pin holes through clearance fit; the leg plates can be aligned and assembled with the other group of leg plates through connecting pins and are fixedly connected through bolts; the front side of the leg plate is fixedly provided with a rack B, and the transmission gear is meshed with the rack B.

Preferably, the front side and the rear side of the leg plate are fixedly provided with three groups of shaft cylinder clamping blocks, the front side of each shaft cylinder clamping block is provided with a U-shaped groove, and the middle of the outer side of each shaft cylinder clamping block is provided with a clamping structure.

Preferably, the outer side of the bottom of the leg plate is fixedly provided with a depth limiting plate, and the bottom of the outer side of the depth limiting plate is integrally provided with a fin structure.

Preferably, the locking device further comprises a telescopic cylinder, a buckle B, a locking screw and a sealing ring; one end of the telescopic cylinder is integrally provided with a buckle B, and the middle of the buckle B is provided with a round hole; the telescopic rod is arranged in the telescopic cylinder in a sliding manner, the locking screw passes through a round hole in the middle of the buckle B and is inserted into a screw hole of the telescopic rod, and an annular groove is formed in the inner side of a nut of the locking screw and is fixedly provided with a sealing ring; the buckle A and the buckle B can be matched and clamped on the outer side of the shaft cylinder clamping block.

(III) advantageous effects

The utility model provides a bridge leg depth limiter for emergency rescue and disaster relief at a breach of a dam in yellow river water conservancy, which is provided with a central plate and a side plate and can carry out auxiliary conveying on leg plates; the central plate and the side plates can be locked and fixed outside the bridge pier through a mechanical structure, can be suitable for bridges with different widths to fix, are convenient to adjust, can be used for rapidly installing the positions of the bridge legs exposed out of the water surface to perform subsequent assembly, and are convenient to operate and high in applicability.

Secondly, the front side of leg board is provided with rack B, and rack B meshes with drive gear, drives rack B through drive gear and can carry the leg board, and drive gear's stability is strong, and drive gear is coaxial through worm gear transmission, can not carry the self-locking of leg board time, and stability is strong, and the leg board can splice the equipment simultaneously, can be suitable for the river of the different degree of depth to can measure the length and the pitch of leg board and measure the depth of water.

Moreover, the setting of a section of thick bamboo fixture block and locking device can be locked fixedly to the leg board, can fix the relative position of two sets of leg boards, and stability is strong, and telescopic link and telescopic cylinder are seal structure, can prevent that locking screw is stained with water and rusts.

Drawings

FIG. 1 is a schematic perspective view of an embodiment of the present invention;

FIG. 2 is a schematic axial side view of an embodiment of the present invention;

FIG. 3 is a schematic bottom view of an embodiment of the present invention;

FIG. 4 is a schematic perspective view of a center plate in an embodiment of the present invention;

FIG. 5 is a schematic axial side view of a center plate in an embodiment of the present invention;

FIG. 6 is a schematic perspective view of a locking device according to an embodiment of the present invention;

FIG. 7 is an enlarged partial structural view of part A in the embodiment of the present invention;

FIG. 8 is an enlarged partial structural view of a portion B in the embodiment of the present invention;

in fig. 1 to 8, the correspondence between the part names or lines and the reference numbers is:

1. a center plate; 101. a shaft bracket A; 102. a driven shaft A; 103. a driven shaft B; 104. a transmission shaft A; 105. a shaft bracket B; 106. a driven shaft C; 107. a shaft bracket C; 108. a linkage shaft sleeve; 109. a hexagonal rod; 110. a transmission gear; 2. a side plate; 201. a sliding insertion rod; 202. a rack A; 203. a reset lever; 3. clamping a plate; 301. clamping the cylinder; 4. a handle; 401. a side block; 402. inserting a block; 403. a bolt; 5. a leg plate; 501. connecting pin holes; 502. a connecting pin; 503. a rack B; 6. a shaft cylinder clamping block; 7. a depth stop plate; 8. a locking device; 801. a telescopic rod; 802. a buckle A; 803. a telescopic cylinder; 804. a buckle B; 805. locking the screw rod; 806. and (5) sealing rings.

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.

Referring to fig. 1 to 8, an embodiment of the present invention includes: the bridge leg depth limiter is suitable for emergency rescue and disaster relief at the breach of the water conservancy dam of the yellow river and comprises a central plate 1 and a locking device 8; the center plate 1 further comprises a shaft bracket A101, a driven shaft A102, a driven shaft B103, a transmission shaft A104, a shaft bracket B105 and a driven shaft C106; a shaft bracket A101 is integrally arranged in the middle of the front side of the central plate 1, a driven shaft A102 and a driven shaft B103 are rotatably arranged in the middle of the shaft bracket A101, a worm is arranged on the outer side of the driven shaft A102, a worm wheel is arranged on the outer side of the driven shaft B103, and the driven shaft A102 and the driven shaft B103 are in transmission connection through the worm and gear; a protruding plate is arranged on one side of the front end of the shaft bracket A101, a transmission shaft A104 is rotatably arranged in the protruding plate, and the transmission shaft A104 is in transmission connection with a driven shaft A102 through a bevel gear; a shaft bracket B105 is integrally arranged on one side of the front bottom of the central plate 1, a driven shaft C106 is rotatably arranged in the shaft bracket B105, and a worm wheel is arranged outside the driven shaft C106; the central plate 1 further comprises a shaft bracket C107, a linkage shaft sleeve 108, a hexagonal rod 109 and a transmission gear 110; a shaft bracket C107 is integrally arranged in the middle of the front bottom of the central plate 1, and a linkage shaft sleeve 108 is rotatably arranged in the middle of the shaft bracket C107; a worm wheel is fixedly arranged outside the linkage shaft sleeve 108, and the driven shaft C106 is in transmission connection with the linkage shaft sleeve 108 through a worm and gear; two groups of hexagonal rods 109 are telescopically and slidably arranged on two sides of the linkage shaft sleeve 108, the outer ends of the hexagonal rods 109 are respectively and rotatably arranged at the front end of the side plate 2, and transmission gears 110 are fixedly arranged at the outer ends of the hexagonal rods 109; two groups of side plates 2 are arranged on two sides of the central plate 1 in a sliding manner; the side plate 2 further comprises a sliding inserted link 201, a rack A202 and a reset link 203; square holes are formed in two sides of the central plate 1; a sliding inserted bar 201 is integrally arranged on one side of the front end of the side plate 2, and the sliding inserted bar 201 is slidably arranged in square grooves on two sides of the central plate 1; the front end of the side plate 2 is integrally provided with a rack A202, and the outer side of the driven shaft B103 is provided with a synchronous gear meshed with the two sets of racks A202; a reset rod 203 is fixedly arranged at the rear end of the side plate 2, and the reset rod 203 penetrates through the clamping plate 3 and is sleeved with a spring and is fixedly provided with a blocking piece; the clamping plates 3 are arranged on the rear sides of the side plates 2 in a sliding manner; wherein, the clamping plate 3 also comprises a clamping cylinder 301; the front side surface of the clamping plate 3 is of a transverse corrugated structure, the rear side of the clamping plate 3 is fixedly provided with a clamping cylinder 301, and a circular hole is vertically formed in the middle of the clamping cylinder 301; a hand lever 4 is arranged at the rear side of the clamping plate 3; the hand lever 4 further comprises a side block 401, an insertion block 402 and a bolt 403; two groups of side blocks 401 are fixedly arranged at two ends of the hand lever 4; two groups of insertion blocks 402 are arranged outside the hand lever 4 in a sliding manner; the bottom of the outer side of the insertion block 402 is fixedly provided with a bolt 403, and the bolt 403 can be fixedly arranged in a round hole in the middle of the clamping cylinder 301 through clearance fit; a sliding groove is vertically formed in the outer side of the side plate 2, and a leg plate 5 is arranged on the outer side of the side plate 2 in a sliding mode through the sliding groove; the leg plate 5 further comprises a connecting pin hole 501, a connecting pin 502 and a rack B503; the top of the leg plate 5 is provided with four groups of connecting pin holes 501, and connecting pins 502 are fixedly arranged in the connecting pin holes 501 through clearance fit; the leg plates 5 can be aligned and assembled with another group of leg plates 5 through connecting pins 502 and fixedly connected through bolts; a rack B503 is fixedly arranged on the front side of the leg plate 5, and the transmission gear 110 is meshed with the rack B503; wherein, the front side and the rear side of the leg plate 5 are both fixedly provided with three groups of shaft barrel clamping blocks 6, the front side of each shaft barrel clamping block 6 is provided with a U-shaped groove, and the middle of the outer side of each shaft barrel clamping block 6 is provided with a clamping structure; the locking device 8 also comprises a telescopic rod 801 and a buckle A802; the buckle A802 is arranged at one end of the telescopic rod 801 in an integrated mode, and a screw hole is formed in the middle of the other end of the telescopic rod 801.

Wherein, the bottom outside of leg plate 5 is fixed and is provided with depth stop plate 7, and the outside bottom integral type of depth stop plate 7 is provided with the fin structure.

The locking device 8 further comprises a telescopic cylinder 803, a buckle B804, a locking screw 805 and a sealing ring 806; one end of the telescopic cylinder 803 is integrally provided with a buckle B804, and the middle of the buckle B804 is provided with a round hole; the telescopic rod 801 is slidably arranged in the telescopic cylinder 803, the locking screw 805 penetrates through a round hole in the middle of the buckle B804 and is inserted into a screw hole of the telescopic rod 801, and an annular groove is formed in the inner side of a nut of the locking screw 805 and is fixedly provided with a sealing ring 806; the fastener A802 and the fastener B804 can be matched and clamped on the outer side of the shaft cylinder clamping block 6.

The working principle is as follows: when the self-locking type bridge pier is used, the central plate 1 is placed on the outer side of the bridge pier, the two groups of clamping plates 3 are pulled back by using the hand lever 4, and the clamping plates 3 are fixed in a self-locking manner through springs outside the reset rod 203; the transmission shaft A104 is rotated, the transmission shaft A104 drives the driven shaft A102 to rotate through a bevel gear, the driven shaft A102 drives the driven shaft B103 to rotate through a worm gear and worm, the driven shaft B103 drives the synchronous gear to rotate, the two groups of racks A202 move towards two sides, the racks A202 drive the side plates 2 to be locked, the side plates 2 clamp the bridge pier tightly, and the central plate 1 is fixed outside the bridge pier.

The leg plate 5 is arranged on the outer side of the side plate 2 in a sliding mode, the driven shaft C106 is rotated, the driven shaft C106 drives the linkage shaft sleeve 108 to rotate, the linkage shaft sleeve 108 drives the transmission gear 110 to rotate through the hexagonal rod 109, the transmission gear 110 drives the rack B503 to move downwards, the leg plate 5 descends, and the outer portion of the bridge leg is wrapped and reinforced; leg plate 5 can be installed additional perpendicularly through the assistance-localization real-time of connecting pin hole 501 and connecting pin 502, can carry out long distance bridge leg after the bolt fastening and consolidate, can wrap up the bridge leg outside in the deep water, carries out auxiliary stay with depth-limiting plate 7 contact riverbed.

When the leg plate 5 descends, each group of shaft cylinder fixture blocks 6 is lower than the central plate 1, the buckle A802 and the buckle B804 are respectively embedded into the two groups of shaft cylinder fixture blocks 6, and the telescopic rod 801 and the telescopic cylinder 803 can be locked and fixed by rotating the locking screw 805; the seal ring 806 can seal the telescopic rod 801 and the telescopic cylinder 803 while the telescopic rod 801 and the telescopic cylinder 803 are locked, and the locking screw 805 is kept dry.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. Bridge leg depth limiter for emergency rescue and disaster relief suitable for dikes and dams at breach of yellow river water conservancy is characterized in that: comprises a central plate (1) and a locking device (8); the central plate (1) further comprises a shaft bracket A (101), a driven shaft A (102), a driven shaft B (103), a transmission shaft A (104), a shaft bracket B (105) and a driven shaft C (106); a shaft bracket A (101) is integrally arranged in the middle of the front side of the central plate (1), a driven shaft A (102) and a driven shaft B (103) are rotatably arranged in the middle of the shaft bracket A (101), a worm is arranged on the outer side of the driven shaft A (102), a worm wheel is arranged on the outer side of the driven shaft B (103), and the driven shaft A (102) and the driven shaft B (103) are in transmission connection through the worm and gear; a protruding plate is arranged on one side of the front end of the shaft bracket A (101), a transmission shaft A (104) is rotatably arranged in the protruding plate, and the transmission shaft A (104) is in transmission connection with a driven shaft A (102) through a bevel gear; a shaft bracket B (105) is integrally arranged on one side of the front bottom of the central plate (1), a driven shaft C (106) is rotatably arranged in the shaft bracket B (105), and a worm wheel is arranged outside the driven shaft C (106); the central plate (1) also comprises a shaft bracket C (107), a linkage shaft sleeve (108), a hexagonal rod (109) and a transmission gear (110); a shaft bracket C (107) is integrally arranged in the middle of the front bottom of the central plate (1), and a linkage shaft sleeve (108) is rotatably arranged in the middle of the shaft bracket C (107); a worm wheel is fixedly arranged outside the linkage shaft sleeve (108), and the driven shaft C (106) is in transmission connection with the linkage shaft sleeve (108) through a worm and gear; two sides of the linkage shaft sleeve (108) are telescopically and slidably provided with two groups of hexagonal rods (109), the outer ends of the hexagonal rods (109) are respectively and rotatably arranged at the front ends of the side plates (2), and the outer ends of the hexagonal rods (109) are respectively and fixedly provided with a transmission gear (110); two groups of side plates (2) are arranged on two sides of the central plate (1) in a sliding manner; clamping plates (3) are arranged on the rear sides of the side plates (2) in a sliding mode; a hand lever (4) is arranged at the rear side of the clamping plate (3); a sliding groove is vertically formed in the outer side of the side plate (2), a leg plate (5) is arranged on the outer side of the side plate (2) in a sliding mode through the sliding groove, and the leg plate (5) further comprises a connecting pin hole (501), a connecting pin (502) and a rack B (503); the top of the leg plate (5) is provided with four groups of connecting pin holes (501), and connecting pins (502) are fixedly arranged in the connecting pin holes (501) through clearance fit; the leg plates (5) can be aligned and assembled with the other group of leg plates (5) through connecting pins (502) and fixedly connected through bolts; a rack B (503) is fixedly arranged on the front side of the leg plate (5), and the transmission gear (110) is meshed with the rack B (503); the locking device (8) further comprises a telescopic rod (801) and a buckle A (802); one end of the telescopic rod (801) is integrally provided with a buckle A (802), and a screw hole is formed in the middle of the other end of the telescopic rod (801).

2. The bridge leg depth limiter for emergency rescue and disaster relief at breach of dam in yellow river according to claim 1, wherein: the side plate (2) further comprises a sliding inserted link (201), a rack A (202) and a reset link (203); square holes are formed in two sides of the central plate (1); one side of the front end of the side plate (2) is integrally provided with a sliding inserted bar (201), and the sliding inserted bar (201) is arranged in square grooves at two sides of the central plate (1) in a sliding manner; the front end of the side plate (2) is integrally provided with a rack A (202), and the outer side of the driven shaft B (103) is provided with a synchronous gear which is meshed with the two sets of racks A (202); the rear end of the side plate (2) is fixedly provided with a reset rod (203), and the reset rod (203) penetrates through the clamping plate (3) to be sleeved with the spring and is fixedly provided with a blocking piece.

3. The bridge leg depth limiter for emergency rescue and disaster relief at breach of dam in yellow river according to claim 1, wherein: the clamping plate (3) further comprises a clamping cylinder (301); the front side of the clamping plate (3) is of a transverse corrugated structure, a clamping cylinder (301) is fixedly arranged on the rear side of the clamping plate (3), and a round hole is vertically formed in the middle of the clamping cylinder (301).

4. The bridge leg depth limiter for emergency rescue and disaster relief at breach of dam in yellow river according to claim 1, wherein: the hand lever (4) also comprises a side block (401), an inserting block (402) and a bolt (403); two groups of side blocks (401) are fixedly arranged at two ends of the hand lever (4); two groups of insertion blocks (402) are arranged on the outer side of the hand lever (4) in a sliding manner; the bottom of the outer side of the insertion block (402) is fixedly provided with a bolt (403), and the bolt (403) can be fixedly arranged in a round hole in the middle of the clamping cylinder (301) through clearance fit.

5. The bridge leg depth limiter for emergency rescue and disaster relief at breach of dam in yellow river according to claim 1, wherein: the front side and the rear side of the leg plate (5) are fixedly provided with three groups of shaft barrel clamping blocks (6), the front side of each shaft barrel clamping block (6) is provided with a U-shaped groove, and the middle of the outer side of each shaft barrel clamping block (6) is provided with a clamping structure.

6. The bridge leg depth limiter for emergency rescue and disaster relief at breach of dam in yellow river according to claim 1, wherein: the outer side of the bottom of the leg plate (5) is fixedly provided with a depth limiting plate (7), and the bottom of the outer side of the depth limiting plate (7) is integrally provided with a fin structure.

7. The bridge leg depth limiter for emergency rescue and disaster relief at breach of dam in yellow river according to claim 1, wherein: the locking device (8) further comprises a telescopic cylinder (803), a buckle B (804), a locking screw (805) and a sealing ring (806); one end of the telescopic cylinder (803) is integrally provided with a buckle B (804), and the middle of the buckle B (804) is provided with a round hole; the telescopic rod (801) is arranged in the telescopic cylinder (803) in a sliding mode, the locking screw (805) penetrates through a round hole in the middle of the buckle B (804) and is inserted into a screw hole of the telescopic rod (801), and an annular groove is formed in the inner side of a nut of the locking screw (805) and a sealing ring (806) is fixedly arranged on the inner side of the nut; the buckle A (802) and the buckle B (804) can be matched and clamped on the outer side of the shaft cylinder clamping block (6).