A bridge pile foundation protection device for bridge construction

Abstract

The invention provides a bridge pile foundation protection device for bridge construction, which belongs to the technical field of bridge construction. It includes a protective outer ring, a placement groove is opened inside the protective outer ring, and a clamping inner ring is fixedly connected to the inner surface of the placement groove, and the outer surfaces of both sides of the protective outer ring are fixedly connected with fixing bolts, and the top inner wall of the placement groove is fixedly connected with a fixing block; after the limit rod is immersed in the ground, the push rod is in an initial state at this time, and the second hydraulic rod drives the push rod to start to descend, and the push rod pushes the bottom linkage ring to fall, and the linkage ring pushes the clamping frame to slide down along the outer wall of the placement rod when touching the clamping frame. At this time, the rotating shaft outside the clamping frame is subjected to pressure and starts to rotate, and at the same time, the bottom end of the limit strip starts to move outward, so that the limit strip is in an open state as a whole. After the linkage ring presses the clamping frame to the bottom, the limit strip extends from the groove into the soil around the limit rod, and cooperates with the limit rod to fix the position of the clamping inner ring at the top.

Description

Technical Field

[0001] The invention relates to the technical field of bridge construction, in particular to a bridge pile foundation protection device used for bridge construction. Background Art

[0002] In the bridge construction industry, bridge pile foundation is an indispensable part of bridge construction. It bears the weight of the bridge and transfers the load to the foundation to ensure the stability and safety of the bridge. If there is a problem with the bridge pile foundation, it will cause the structure of the bridge to fail and even cause serious accidents. Therefore, during bridge construction, construction workers need to take protective measures on the bridge pile foundation to increase safety at work.

[0003] The traditional method of bridge pile foundation protection mainly uses concrete wrapping, which can protect the bridge pile foundation from erosion and physical damage by external environmental factors to a certain extent, but there are still some shortcomings. Although concrete wrapping can provide certain physical protection, over time, the concrete may crack, peel off and other problems, resulting in reduced protection effect. In response to the above problems, a bridge pile foundation protection device for bridge construction is proposed. Summary of the invention

[0004] The present invention provides a bridge pile foundation protection device for bridge construction, aiming to solve the problem in the prior art that although concrete wrapping can provide certain physical protection, the concrete may crack and peel off over time, resulting in reduced protection effect.

[0005] The invention is achieved in this way: it comprises a protective outer ring, wherein a placement groove is provided inside the protective outer ring, the inner surface of the placement groove is fixedly connected with a clamping inner ring, and the outer surfaces of both sides of the protective outer ring are fixedly connected with fixing bolts, the top inner wall of the placement groove is fixedly connected with a fixing block, the bottom outer surface of the fixing block is fixedly connected with a first hydraulic rod, the inner surface of the bottom end of the first hydraulic rod is movably connected with a connecting rod, the outer surface of the connecting rod is fixedly connected with a gear ring, the bottom of the connecting rod is fixedly connected with a limiting rod, the limit rod is provided with a gear ring outside, the bottom of the limit rod is fixedly connected with a pointed head, the inner center of the limit rod is fixedly connected with a placement rod, the top of the placement rod is fixedly connected with a second hydraulic rod, the bottoms of both sides of the second hydraulic rod are movably connected with push rods, the outer surface of the bottom end of the push rod is fixedly connected with a connecting ring, and a fixing frame is provided at the bottom of the connecting ring, and the outer surface of the fixing frame is movably connected with a rotating shaft.

[0006] Preferably, the clamping inner ring is fixedly connected to the protective outer ring, the placement groove is opened between the clamping inner ring and the protective outer ring, the group of protective outer rings are fixedly connected by the clamping inner ring, the first hydraulic rod is fixed to the inner wall of the placement groove by a fixed block, the connecting rod and the first hydraulic rod are connected for lifting, the pointed head and the limit rod form a lifting structure with the protective outer ring through the first hydraulic rod, the slotted ring is opened on the outer wall of the limit rod, and three slots are opened.

[0007] Preferably, the placing rod is cylindrical, the second hydraulic rod and the push rod are slidably connected, the push rods are symmetrically distributed on both sides of the placing rod, the linking ring is hollow ring-shaped, the inner wall of the linking ring is covered on the outer surface of the placing rod, and the linking ring forms a lifting structure with the placing rod through the cooperation of the push rod and the second hydraulic rod.

[0008] Preferably, the inner wall of the clamping frame is slidably connected to the outside of the placement rod, and the clamping frame is arranged at the bottom end of the linkage ring. The outer surface of the clamping frame is provided with a slide groove in an annular shape, and the inner wall of the slide groove is rotatably connected to a rotating shaft.

[0009] Preferably, the outer surface of the bottom end of the rotating shaft is fixedly connected to a limit strip, the bottom end of the fixing frame is fixedly connected to a return spring, the outer surface of the bottom end of the return spring is fixedly connected to a connecting plate, the bottom of the connecting plate is fixedly connected to a fixing rod, the inner surface of the bottom end of the limit strip is fixedly connected to a fixing plate, and the inner surface of the bottom end of the fixing plate is movably connected to a telescopic spring.

[0010] Preferably, three of the rotating shafts and limit bars are provided, and the positions of the limit bars correspond to the slots. The limit bars form a rotating structure with the limit rod through the cooperation of the rotating shaft and the fixing frame. The reset spring is fixed between the fixing frame and the connecting plate, and the reset spring is covered on the outer wall of the placement rod.

[0011] Preferably, the fixing rod is fixedly connected to the placement rod via a connecting plate, the fixing rod is triangularly arranged, the inner wall of the bottom end of the telescopic spring is fixed to the outer surface of the fixing rod, and the bottom end of the limiting strip forms a telescopic structure with the fixing rod via a fixing plate and a telescopic spring.

[0012] Preferably, movable rods are fixedly connected to both sides of the inner wall of the limit rod, a spring column is movably connected to the inner surface of the movable rod, a locking block is fixedly connected to the inner surface of one side of the spring column, and an oblique groove is provided on the outer surface of the bottom end of the locking block.

[0013] Preferably, the movable rods and the slots are arranged alternately, the locking block forms a telescopic structure with the clamping frame through a spring column, and the inclined surface of the inclined slot corresponds to the top of the clamping frame.

[0014] Preferably, the inner walls on both sides of the placement groove are fixedly connected with slide rails, the inner surfaces of the slide rails are slidably connected with sliders, the outer surface of one side of the slider is fixedly connected with a guide ring, and the inner wall of the guide ring is fixedly connected to the top outer wall of the limiting rod.

[0015] The bridge pile foundation protection device provided by the present invention is that after the limit rod is immersed in the ground, the push rod is in the initial state at this time, the second hydraulic rod drives the push rod to start to descend, and the push rod pushes the linkage ring at the bottom to fall. When the linkage ring touches the clamping frame, the clamping frame is pushed to slide down along the outer wall of the placing rod. At this time, the rotating shaft outside the clamping frame is subjected to pressure and starts to rotate, and the rotating shaft drives the top of the limit bar to rotate, so that the top of the limit bar starts to slide down, and at the same time, the bottom end of the limit bar starts to move outward, so that the limit bar is in an open state as a whole. When the bottom of the limit bar moves outward, the telescopic spring enables the limit bar to be telescopic within a certain range, and at the same time, the telescopic spring limits the limit bar to the fixed rod at the bottom of the placing rod. After the linkage ring presses the clamping frame to the bottom, the limit bar extends from the slot into the soil around the limit rod, and cooperates with the limit rod to fix the position of the clamping inner ring at the top. The device can automatically adjust and fix the position of the pile foundation, ensure the safety and stability during the construction process, and realize the efficient pile foundation protection function through hydraulic drive and mechanical transmission, while improving the construction efficiency.

[0016] The bridge pile foundation protection device for bridge construction provided by the present invention is used. When the device is in use, the clamping inner ring is clamped to the outer wall of the bridge pile foundation by the clamping bolts. At this time, the device is placed on the ground, and the staff starts the first hydraulic rod, and the first hydraulic rod drives the linkage rod to descend. When the linkage rod descends, the limit rod and the tip are inserted into the ground. When the limit rod descends, the outer wall is clamped with a guide ring, and the limit rod drives the guide ring to descend. The slider outside the guide ring slides down along the inner wall of the slide rail, and the slider limits and guides the direction in which the limit rod descends, so as to guide the moving direction of the limit rod, avoid the limit rod from deflecting during the descent process, and ensure that it can be accurately inserted into the ground.

[0017] The bridge pile foundation protection device for bridge construction provided by the present invention has the advantages that when the linkage ring descends to a certain position, the locking blocks on both sides of the placing rod are squeezed, and the locking blocks can smoothly pass through the linkage ring through the inclined grooves at the bottom of the locking blocks. After the linkage ring passes, the locking blocks lose their edges, and the spring columns control the locking blocks to push forward and restore the initial positions. At this time, the locking blocks on both sides are at the top of the linkage ring to prevent the linkage ring from rebounding and lock the open state of the bottom limit strip. Through the cooperation of the locking blocks and the inclined grooves, the device can automatically lock when the linkage ring descends to a specific position to prevent rebound and keep the bottom limit strip stable, thereby improving the safety and reliability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this technical field, other drawings can be obtained based on these drawings without creative work. As shown in the accompanying drawings, the above and other purposes, features and advantages of the present invention will be clearer. The same reference numerals in all the drawings indicate the same parts. The drawings are not deliberately scaled to the actual size, and the focus is on illustrating the main purpose of the present invention.

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the bridge pile foundation protection device for bridge construction provided by the present invention;

[0020] Figure 2 It is a schematic diagram of a side cross-sectional structure of a bridge pile foundation protection device for bridge construction provided by the present invention;

[0021] Figure 3 It is a schematic diagram of the enlarged structure of the limit rod of the bridge pile foundation protection device for bridge construction provided by the present invention;

[0022] Figure 4 It is a structural schematic diagram of the bridge pile foundation protection device provided by the present invention when the limit strip is closed;

[0023] Figure 5 It is a schematic diagram of the structure of the bridge pile foundation protection device provided by the present invention after the limit strip is opened;

[0024] Figure 6 The invention provides a bridge pile foundation protection device for bridge construction. Figure 5 Schematic diagram of the structure at A in the middle;

[0025] Figure 7 The invention provides a bridge pile foundation protection device for bridge construction. Figure 2 Schematic diagram of the structure at point B in the middle.

[0026] Summary of reference numerals: 1. Protective outer ring; 101. Placement groove; 102. Clamping inner ring; 103. Fixing bolt; 2. Fixing block; 201. First hydraulic rod; 202. Linking rod; 203. Gear ring; 204. Limiting rod; 205. Slot; 206. Pointed head; 3. Placement rod; 301. Second hydraulic rod; 302. Push rod; 303. Linking ring; 304. Fixing frame; 305. Rotating axis; 306. Limiting strip; 307. Return spring; 308. Connecting plate; 309. Fixing rod; 310. Fixing plate; 311. Telescopic spring; 4. Movable rod; 401. Spring column; 402. Locking block; 403. Bevel groove; 5. Slide rail; 501. Sliding block; 502. Guide ring. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the technical field without creative work are within the scope of protection of the present invention.

[0029] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0030] Furthermore, the terms “first”, “second”, etc. are merely used for distinguishing descriptions and are not to be understood as indicating or implying relative importance.

[0031] For example, see Figure 1-Figure 5 .

[0032] The present embodiment provides a bridge pile foundation protection device for bridge construction, including a protective outer ring 1, a placement groove 101 is opened inside the protective outer ring 1, a clamping inner ring 102 is fixedly connected to the inner surface of the placement groove 101, and fixing bolts 103 are fixedly connected to the outer surfaces of both sides of the protective outer ring 1, a fixing block 2 is fixedly connected to the inner wall of the top of the placement groove 101, a first hydraulic rod 201 is fixedly connected to the outside of the bottom end of the fixing block 2, a connecting rod 202 is movably connected to the inner surface of the bottom end of the first hydraulic rod 201, a gear ring 203 is fixedly connected to the outer surface of the connecting rod 202, a limiting rod 204 is fixedly connected to the bottom of the connecting rod 202, a gear ring 203 is opened outside the limiting rod 204, a pointed head 206 is fixedly connected to the bottom of the limiting rod 204, and a fixed tip 206 is fixed at the inner center of the limiting rod 204. A placing rod 3 is fixedly connected, the top of the placing rod 3 is fixedly connected to the second hydraulic rod 301, the bottom of both sides of the second hydraulic rod 301 are movably connected with push rods 302, the bottom outer surface of the push rod 302 is fixedly connected to a linkage ring 303, the bottom of the linkage ring 303 is provided with a fixing frame 304, the outer surface of the fixing frame 304 is movably connected to a rotating shaft 305, the bottom outer surface of the rotating shaft 305 is fixedly connected to a limiting strip 306, the bottom outer surface of the fixing frame 304 is fixedly connected to a return spring 307, the bottom outer surface of the return spring 307 is fixedly connected to a connecting piece 308, the bottom of the connecting piece 308 is fixedly connected to a fixing rod 309, the bottom inner surface of the limiting strip 306 is fixedly connected to a fixing piece 310, and the bottom inner surface of the fixing piece 310 is movably connected to a telescopic spring 311.

[0033] The clamping inner ring 102 is fixedly connected to the protective outer ring 1, and the placement groove 101 is opened between the clamping inner ring 102 and the protective outer ring 1. A group of protective outer rings 1 are fixedly connected by the clamping inner ring 102. The first hydraulic rod 201 is fixed to the inner wall of the placement groove 101 through the fixing block 2. The linkage rod 202 and the first hydraulic rod 201 are connected in a lifting manner. The pointed head 206 and the limiting rod 204 form a lifting structure with the protective outer ring 1 through the first hydraulic rod 201. The groove 205 is annularly opened on the outer wall of the limiting rod 204, and there are three grooves 205. The placement rod 3 is cylindrically arranged, and the second hydraulic rod 301 is slidably connected to the push rod 302. The push rods 302 are symmetrically distributed on both sides of the placement rod 3. The linkage ring 303 is hollow annularly arranged, and the inner wall of the linkage ring 303 is covered on the outer surface of the placement rod 3. The linkage ring 303 forms a lifting structure with the placement rod 3 through the cooperation of the push rod 302 and the second hydraulic rod 301. The inner wall of the clamping frame 304 is slidably connected to the outside of the placement rod 3, and the clamping frame 304 is arranged at the bottom end of the linkage ring 303. The outer surface of the clamping frame 304 is provided with a slide groove in an annular manner. The inner wall of the slide groove is rotatably connected with a rotating shaft 305. The rotating shaft 305 and the limiting strip 306 are both provided with three, and the position of the limiting strip 306 corresponds to the slot 205. The limiting strip 306 is formed with the limiting rod 204 through the cooperation of the rotating shaft 305 and the clamping frame 304. The return spring 307 is fixed between the clamping frame 304 and the connecting piece 308, and the return spring 307 is covered on the outer wall of the placement rod 3. The fixed rod 309 is fixedly connected to the placement rod 3 through the connecting piece 308. The fixed rod 309 is triangular in shape. The inner wall of the bottom end of the telescopic spring 311 is fixed to the outer surface of the fixed rod 309. The bottom end of the limit strip 306 forms a telescopic structure with the fixed rod 309 through the fixing piece 310 and the telescopic spring 311.

[0034] After the limit rod 204 is sunk into the ground, the push rod 302 is in the initial state, and the second hydraulic rod 301 drives the push rod 302 to start to descend. The push rod 302 pushes the bottom linkage ring 303 to fall. When the linkage ring 303 touches the clamping frame 304, it pushes the clamping frame 304 to slide down along the outer wall of the placement rod 3. At this time, the rotating shaft 305 outside the clamping frame 304 begins to rotate under pressure, and the rotating shaft 305 drives the top of the limit bar 306 to rotate, so that the top of the limit bar 306 starts to slide down, and at the same time, the bottom end of the limit bar 306 The limit strip 306 begins to move outward, so that the limit strip 306 is in an open state as a whole. When the bottom of the limit strip 306 moves outward, the telescopic spring 311 enables the limit strip 306 to be telescopic within a certain range. At the same time, the telescopic spring 311 limits the limit strip 306 to the fixed rod 309 at the bottom of the placement rod 3. After the linkage ring 303 presses the clamping frame 304 to the bottom, the limit strip 306 extends from the slot 205 into the soil around the limit rod 204, and cooperates with the limit rod 204 to fix the position of the top clamping inner ring 102.

[0035] For example 2, please refer to Figure 6 .

[0036] The inner walls of the limiting rod 204 are fixedly connected with movable rods 4, the inner surface of the movable rod 4 is movably connected with a spring column 401, the inner surface of one side of the spring column 401 is fixedly connected with a locking block 402, and the outer surface of the bottom end of the locking block 402 is provided with an inclined groove 403.

[0037] The movable rod 4 and the slot 205 are arranged alternately, and the locking block 402 forms a telescopic structure with the fixing frame 304 through the spring column 401. The inclined surface of the inclined groove 403 corresponds to the top of the fixing frame 304. When the interlocking ring 303 drops to a certain position, the locking blocks 402 on both sides of the placement rod 3 are squeezed, and the locking blocks 402 can pass through the interlocking ring 303 smoothly through the inclined groove 403 at the bottom of the locking block 402. After the interlocking ring 303 passes, the locking block 402 loses its edge, and the spring column 401 controls the locking block 402 to push forward and restore the initial position. At this time, the locking blocks 402 on both sides are at the top of the interlocking ring 303 to prevent the interlocking ring 303 from rebounding, and the open state of the bottom limit strip 306 is locked.

[0038] For example 3, please refer to Figure 7 .

[0039] The inner walls of both sides of the placement groove 101 are fixedly connected with slide rails 5, the inner surface of the slide rails 5 is slidably connected with a slider 501, the outer surface of one side of the slider 501 is fixedly connected with a guide ring 502, and the inner wall of the guide ring 502 is fixedly connected to the top outer wall of the limiting rod 204.

[0040] When the device is in use, the clamping inner ring 102 is fixed to the outer wall of the bridge pile foundation by the fixing bolts 103. At this time, the device is placed on the ground, and the staff starts the first hydraulic rod 201. The first hydraulic rod 201 drives the connecting rod 202 to descend. When the connecting rod 202 descends, the limit rod 204 and the pointed head 206 are inserted into the ground. When the limit rod 204 descends, the outer wall is clamped with a guide ring 502. The limit rod 204 drives the guide ring 502 to descend, and the slider 501 outside the guide ring 502 slides down along the inner wall of the slide rail 5, and the slider 501 limits and guides the descending direction of the limit rod 204.

[0041] Working principle: When the device is in use, the clamping inner ring 102 is clamped to the outer wall of the bridge pile foundation by the clamping bolt 103. At this time, the device is placed on the ground, and the staff starts the first hydraulic rod 201. The first hydraulic rod 201 drives the linkage rod 202 to descend. When the linkage rod 202 descends, the limit rod 204 and the tip 206 are inserted into the ground. When the limit rod 204 descends, the outer wall is clamped with the guide ring 502. The limit rod 204 drives the guide ring 502 to descend, and the slider 501 outside the guide ring 502 slides down along the inner wall of the slide rail 5.

[0042] After the limit rod 204 is sunk into the ground, the push rod 302 is in the initial state, and the second hydraulic rod 301 drives the push rod 302 to start to descend. The push rod 302 pushes the bottom linkage ring 303 to fall. When the linkage ring 303 touches the clamping frame 304, it pushes the clamping frame 304 to slide down along the outer wall of the placement rod 3. At this time, the rotating shaft 305 outside the clamping frame 304 begins to rotate under pressure, and the rotating shaft 305 drives the top of the limit bar 306 to rotate, so that the top of the limit bar 306 starts to slide down, and at the same time, the bottom end of the limit bar 306 The limit strip 306 begins to move outward, so that the limit strip 306 is in an open state as a whole. When the bottom of the limit strip 306 moves outward, the telescopic spring 311 allows the limit strip 306 to be telescopic within a certain range. At the same time, the telescopic spring 311 limits the limit strip 306 to the fixed rod 309 at the bottom of the placement rod 3. After the linkage ring 303 presses the clamping frame 304 to the bottom, the limit strip 306 extends from the slot 205 into the soil around the limit strip 204, and cooperates with the limit strip 204 to fix the position of the top clamping inner ring 102;

[0043] When the interlocking ring 303 descends to a certain position, the locking blocks 402 on both sides of the placing rod 3 are squeezed, and the locking blocks 402 can pass through the interlocking ring 303 smoothly through the inclined groove 403 at the bottom of the locking blocks 402. After the interlocking ring 303 passes, the locking blocks 402 lose their edge, and the spring column 401 controls the locking blocks 402 to push forward and restore the initial position. At this time, the locking blocks 402 on both sides are at the top of the interlocking ring 303 to prevent the interlocking ring 303 from rebounding and lock the open state of the bottom limit strip 306.

[0044] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A bridge pile foundation protection device for bridge construction, comprising a protective outer ring (1), characterized in that: The protective outer ring (1) has a placement groove (101) formed inside, a clamping inner ring (102) is fixedly connected to the inner surface of the placement groove (101), fixing bolts (103) are fixedly connected to the outer surfaces of both sides of the protective outer ring (1), a fixing block (2) is fixedly connected to the inner wall of the top end of the placement groove (101), a first hydraulic rod (201) is fixedly connected to the outside of the bottom end of the fixing block (2), a connecting rod (202) is movably connected to the inner surface of the bottom end of the first hydraulic rod (201), a toothed ring (203) is fixedly connected to the outer surface of the connecting rod (202), a limiting rod (204) is fixedly connected to the bottom of the limiting rod (204), a toothed ring (203) is formed on the outside of the limiting rod (204), and a pointed head (206) is fixedly connected to the bottom of the limiting rod (204). ), a plurality of grooves (205) are provided on the surface of the limit rod (204), a placement rod (3) is fixedly connected to the inner center of the limit rod (204), a second hydraulic rod (301) is fixedly connected to the top of the placement rod (3), push rods (302) are movably connected to the bottoms of both sides of the second hydraulic rod (301), a linkage ring (303) is fixedly connected to the outer surface of the bottom end of the push rod (302), a clamping frame (304) is provided at the bottom of the linkage ring (303), a rotating shaft (305) is movably connected to the outer surface of the clamping frame (304), an inner wall of the linkage ring (303) is covered on the outer surface of the placement rod (3), an inner wall of the clamping frame (304) is slidably connected to the outside of the placement rod (3), and the clamping frame (304) is provided at the bottom end of the linkage ring (303); The outer surface of the bottom end of the rotating shaft (305) is fixedly connected to a limit strip (306); the outer bottom end of the fixing frame (304) is fixedly connected to a return spring (307); the outer bottom end surface of the return spring (307) is fixedly connected to a connecting piece (308); the bottom of the connecting piece (308) is fixedly connected to a fixing rod (309); the inner bottom end surface of the limit strip (306) is fixedly connected to a fixing piece (310); the inner bottom end surface of the fixing piece (310) is movably connected to a telescopic spring (311); the position of the limit strip (306) corresponds to the slot (205); The fixing rod (309) is fixedly connected to the placement rod (3) via a connecting piece (308); movable rods (4) are fixedly connected to both sides of the inner wall of the limiting rod (204); the inner surface of the movable rod (4) is movably connected to a spring column (401); a locking block (402) is fixedly connected to the inner surface of one side of the spring column (401); an oblique groove (403) is provided on the outer surface of the bottom end of the locking block (402); the movable rod (4) and the groove (205) are arranged alternately; the locking block (402) forms a telescopic structure with the fixing frame (304) via the spring column (401); and the inclined surface of the oblique groove (403) corresponds to the top of the fixing frame (304).

2. A bridge pile foundation protection device for bridge construction according to claim 1, characterized in that: The clamping inner ring (102) is fixedly connected to the protective outer ring (1); the placement groove (101) is provided between the clamping inner ring (102) and the protective outer ring (1); a group of protective outer rings (1) are fixedly connected via the clamping inner ring (102); the first hydraulic rod (201) is fixed to the inner wall of the placement groove (101) via a fixing block (2); the linkage rod (202) and the first hydraulic rod (201) are connected in a lifting manner; the pointed head (206) and the limiting rod (204) form a lifting structure with the protective outer ring (1) via the first hydraulic rod (201); the slot (205) is annularly provided on the outer wall of the limiting rod (204), and three slots (205) are provided.

3. The bridge pile foundation protection device for bridge construction according to claim 1, characterized in that: The placement rod (3) is cylindrical in shape, the second hydraulic rod (301) is slidably connected to the push rod (302), the push rods (302) are symmetrically distributed on both sides of the placement rod (3), the linkage ring (303) is hollow and annular, and the linkage ring (303) forms a lifting structure with the placement rod (3) through the cooperation of the push rod (302) and the second hydraulic rod (301).

4. The bridge pile foundation protection device for bridge construction according to claim 1, characterized in that: The outer surface of the clamping frame (304) is provided with a slide groove in an annular shape, and the inner wall of the slide groove is rotatably connected to a rotating shaft (305).

5. The bridge pile foundation protection device for bridge construction according to claim 1, characterized in that: The rotating shaft (305) and the limiting bars (306) are both provided in three numbers. The limiting bars (306) form a rotating structure with the limiting rod (204) through the cooperation of the rotating shaft (305) and the fixing frame (304). The return spring (307) is fixed between the fixing frame (304) and the connecting piece (308), and the return spring (307) is covered on the outer wall of the placement rod (3).

6. The bridge pile foundation protection device for bridge construction according to claim 1, characterized in that: The fixing rod (309) is triangular in shape, the inner wall of the bottom end of the telescopic spring (311) is fixed to the outer surface of the fixing rod (309), and the bottom end of the limiting strip (306) forms a telescopic structure with the fixing rod (309) via the fixing sheet (310) and the telescopic spring (311).

7. The bridge pile foundation protection device for bridge construction according to claim 1, characterized in that: The inner walls on both sides of the placement groove (101) are fixedly connected to slide rails (5), the inner surfaces of the slide rails (5) are slidably connected to sliders (501), the outer surface of one side of the slider (501) is fixedly connected to a guide ring (502), and the inner wall of the guide ring (502) is fixedly connected to the top outer wall of the limiting rod (204).

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