A bored pile construction device for highway construction

Abstract

This invention discloses a construction device for cast-in-place piles in highway construction, belonging to the field of cast-in-place pile construction technology. It includes a main body mechanism for placing a reinforcing cage, with an insertion mechanism for inserting the cage into the ground and an adjustment mechanism for adjusting the construction height and angle. By incorporating an inner rotating frame, friction wheels, and clamping roller assembly within the main body mechanism, combined with the preload of the clamping springs, the invention can stably clamp the reinforcing cage onto the friction wheels. Driven by a rotating motor, it achieves a precise 90° rotation of the reinforcing cage from a horizontal to a vertical position. This process avoids the collision with the hole wall or skewing problems that may occur during manual hoisting and alignment, ensuring the accuracy of the vertical insertion of the reinforcing cage into the pile hole, thereby improving the quality of the pile.

Description

Technical Field

[0001] This invention relates to the field of cast-in-place pile construction technology, and in particular to a cast-in-place pile construction device for highway construction. Background Technology

[0002] In highway engineering construction, cast-in-place piles are widely used in bridges, roadbeds, and slope protection structures due to their high bearing capacity and wide applicability. One of the key steps in cast-in-place pile construction is to accurately and efficiently place the reinforcing cage into the pre-drilled pile hole, followed by pouring concrete.

[0003] Currently, traditional rebar cage lowering operations mostly rely on crane hoisting combined with manual support. During construction, the rebar cage is first vertically hoisted, aligned with the center of the pile hole, and then slowly lowered. However, this traditional method has the following shortcomings in actual operation: low construction efficiency, high reliance on manual labor, as the hoisting, alignment, and lowering of the rebar cage require considerable manual assistance, especially when the rebar cage is long or the construction site is narrow, making operation difficult and time-consuming; verticality and positioning accuracy are difficult to guarantee, as manual lowering is susceptible to human factors, and the rebar cage may deviate or collide with the hole wall during lowering, affecting the quality of pile formation, especially when constructing on sloping road surfaces, making it difficult to ensure the horizontal state of the construction equipment, thus affecting the vertical insertion accuracy of the rebar cage; poor adaptability, as existing equipment is mostly a fixed structure, unable to be flexibly adjusted according to the slope of the construction site, and difficult to achieve smooth directional changes during the lowering of the rebar cage; low automation, as the clamping, turning, and lowering of the rebar cage lack integrated and automated mechanism design, resulting in insufficient construction continuity and affecting overall construction efficiency. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention discloses a cast-in-place pile construction device for highway construction that can improve the efficiency of lowering the reinforcing cage, ensure insertion verticality, adapt to different ground slopes, and automate operation. The technical solution adopted by this invention is as follows: a cast-in-place pile construction device for highway construction, comprising a main body mechanism for placing the reinforcing cage, the main body mechanism including an outer protective shell, and an insertion mechanism for inserting the reinforcing cage into the ground and an adjustment mechanism for adjusting the construction height and angle.

[0005] Furthermore, the main body mechanism includes an inner rotating frame rotatably mounted inside the outer protective shell, a rotating frame gear fixedly mounted on the inner rotating frame, a rotating motor fixedly mounted on the outer protective shell, a motor gear fixedly mounted on the motor shaft of the rotating motor, and the motor gear meshing with the rotating frame gear.

[0006] Furthermore, the main body mechanism also includes a lower fixed rod fixedly installed below the inner rotating frame, a lower rotating rod rotatably installed below the lower fixed rod, an inner sliding block rotatably installed on the lower rotating rod, the inner sliding block slidably installed with the outer protective shell, and a movable gear rotatably installed on the lower fixed rod.

[0007] Furthermore, the main body mechanism also includes two friction wheels rotatably mounted below the inner rotating frame, with a conveying gear fixedly mounted on the friction wheels, and the conveying gear meshing with the movable gear.

[0008] Furthermore, the main body mechanism also includes two clamping rings slidably mounted above the inner rotating frame, with clamping rollers rotatably mounted on the clamping rings, and clamping springs provided between the clamping rings and the inner rotating frame.

[0009] In use, first adjust and fix the adjustment mechanism. At this time, the outer protective shell is located above the pre-reserved insertion hole on the ground. Then, manually insert the steel cage into the outer protective shell. When the steel cage is inserted into the inner rotating frame, the steel cage contacts the friction wheel and the clamping roller. The steel cage pushes the clamping roller and the clamping ring upward, which compresses the clamping spring. The clamping spring causes the clamping roller to clamp the steel cage on the friction wheel. Then, the steel cage continues to be pushed inward, causing the clamping roller to rotate relative to the clamping ring. Finally, the front end of the steel cage contacts the upper end of the inner arc surface. At this time, stop pushing the steel cage.

[0010] Then the rotating motor drives the motor gear to rotate, and the motor gear drives the rotating frame gear and the rotating motor to rotate 90 degrees. The front end of the steel cage slides along the inner arc surface. Finally, the front end of the steel cage reaches the lower extension slot. When the inner rotating frame rotates, the lower fixed rod drives the inner sliding block to slide along the outer protective shell through the lower rotating rod. At this time, the steel cage is in a vertical state, and the movable gear meshes with the docking gear.

[0011] Furthermore, the insertion mechanism includes a conveying motor fixedly installed inside the outer protective housing. A drive gear is fixedly installed on the motor shaft of the conveying motor. An intermediate gear and a mating gear are rotatably installed inside the outer protective housing. The drive gear meshes with the intermediate gear, and the intermediate gear meshes with the mating gear.

[0012] Furthermore, the insertion mechanism also includes an upper sealing plate that is slidably mounted on the top of the outer protective shell, the upper sealing plate having a notch, and an upper door spring being provided between the upper sealing plate and the outer protective shell.

[0013] Furthermore, the insertion mechanism also includes an inner arc surface disposed within the outer protective shell, and a lower extension groove is provided at the bottom of the outer protective shell.

[0014] As the reinforcing cage rotates with the inner rotating frame, it enters the notch in the upper closing plate. Subsequently, the reinforcing cage pushes the upper closing plate to slide along the outer protective shell, and the upper door spring is compressed.

[0015] Once the front end of the rebar cage reaches above the lower extension groove, the conveyor motor drives the drive gear to rotate, which in turn drives the intermediate gear to rotate, which in turn drives the docking gear to rotate, which in turn drives the movable gear to rotate, which in turn drives the conveyor gear and friction wheel to rotate. The friction wheel then conveys the rebar cage downwards, and the front end of the rebar cage is inserted into the pre-drilled insertion hole in the ground. Concrete is then poured into the rebar cage.

[0016] Furthermore, the adjustment mechanism includes four rotating sleeves rotatably mounted on the side of the outer protective shell, with lifting legs slidably mounted inside the rotating sleeves, and fixed feet rotatably mounted below the lifting legs.

[0017] Furthermore, the adjustment mechanism also includes a lifting rack fixedly installed on the lifting outrigger, an adjusting worm gear and an adjusting worm rotatably installed inside the rotating housing, the adjusting worm gear meshing with the adjusting worm, a lifting gear fixedly installed on the adjusting worm gear, and the lifting gear meshing with the lifting rack.

[0018] Before use, first move the outer protective shell above the pre-drilled insertion hole on the ground. Turn the adjusting worm gear with an Allen wrench. The adjusting worm gear drives the adjusting worm wheel and the lifting gear to rotate. The lifting gear drives the lifting rack and the lifting legs to slide up and down along the rotating shell, thereby adjusting the height of the lifting legs relative to the rotating shell. By raising and lowering the lifting legs individually in four positions, the outer protective shell can always remain horizontal when working on sloping road surfaces. After adjustment, fix the fixed feet to the ground and tighten the bolts between the lifting legs and the fixed feet to secure the lifting legs to the fixed feet.

[0019] After construction is completed, adjust the rotating sleeve to move upward relative to the lifting outriggers, so that the tail end of the steel cage disengages from the clamping rollers and friction wheels, and the outer protective shell leaves the tail end of the steel cage. At this time, the steel cage remains in the road surface. Then, release the fixed feet from the ground and remove the outer protective shell.

[0020] The beneficial effects of this invention compared with the prior art are: (1) By setting the inner rotating frame, friction wheel and clamping roller assembly in the main structure, combined with the pre-tightening force of the clamping spring, this invention can stably clamp the steel cage on the friction wheel, and achieve a precise 90° turn of the steel cage from horizontal to vertical under the drive of the rotating motor. This process avoids the collision with the hole wall or the problem of skewing that may occur when manually hoisting and centering, and ensures the accuracy of the vertical insertion of the steel cage into the pile hole, thereby improving the quality of pile formation; (2) The adjustment mechanism set in this invention adopts four independently controlled lifting legs, each of which is connected by a worm gear and lifting gear teeth. The structure enables height adjustment. During construction, the extension length of each leg can be adjusted according to the actual slope of the road surface to keep the outer protective shell in a horizontal state. This effectively solves the equipment leveling problem when constructing cast-in-place piles on complex terrains such as slopes and uneven roadbeds, and expands the applicability of the device. (3) The insertion mechanism set in this invention drives the transmission chain composed of the drive gear, intermediate gear, docking gear and movable gear through the conveyor motor, which ultimately drives the friction wheel to rotate, thereby automatically conveying the clamped steel cage downward to the reserved hole on the ground, reducing the intensity of manual labor and improving the continuity and efficiency of construction. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 This is a schematic diagram of the overall structure of the present invention (internal).

[0023] Figure 3 This is a schematic diagram of the main structure of the present invention. Figure 1 .

[0024] Figure 4 This is a schematic diagram of the main structure of the present invention. Figure 2 .

[0025] Figure 5 This is a schematic diagram of the insertion mechanism of the present invention. Figure 1 .

[0026] Figure 6 This is a schematic diagram of the insertion mechanism of the present invention. Figure 2 .

[0027] Figure 7 This is a schematic diagram of the adjustment mechanism of the present invention.

[0028] Figure 8 for Figure 7 A schematic diagram of the partial structure at point A in the middle.

[0029] Reference numerals: 101-Outer protective shell; 102-Inner rotating frame; 103-Rotating motor; 104-Inner sliding block; 105-Lower rotating rod; 106-Motor gear; 107-Rotating frame gear; 108-Lower fixed rod; 109-Moving gear; 110-Conveying gear; 111-Clamping ring; 112-Clamping roller; 113-Clamping spring; 114-Friction wheel; 201-Upper sealing plate; 202-Upper door spring; 203-Conveying motor; 204-Driving gear; 205-Intermediate gear; 206-Matching gear; 207-Inner arc surface; 208-Lower extension slot; 301-Lifting support leg; 302-Fixed foot; 303-Rotating sleeve; 304-Lifting rack; 305-Lifting gear; 306-Adjusting worm gear; 307-Adjusting worm; 4-Reinforcing cage. Detailed Implementation

[0030] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0031] Example: Reference Figures 1-8 A construction device for cast-in-place piles in highway construction includes a main body for inserting a reinforcing cage 4. The main body includes an outer protective shell 101. Inside the main body are an insertion mechanism for inserting the reinforcing cage 4 into the ground and an adjustment mechanism for adjusting the construction height and angle.

[0032] like Figure 3 , Figure 4 As shown, the main mechanism includes an inner rotating frame 102 rotatably mounted inside the outer protective shell 101, a rotating frame gear 107 fixedly mounted on the inner rotating frame 102, a rotating motor 103 fixedly mounted on the outer protective shell 101, and a motor gear 106 fixedly mounted on the motor shaft of the rotating motor 103, which meshes with the rotating frame gear 107.

[0033] like Figure 3 , Figure 4 As shown, the main body also includes a lower fixed rod 108 fixedly installed below the inner rotating frame 102, a lower rotating rod 105 rotatably installed below the lower fixed rod 108, an inner sliding block 104 rotatably installed on the lower rotating rod 105, the inner sliding block 104 slidably installed with the outer protective shell 101, and a movable gear 109 rotatably installed on the lower fixed rod 108.

[0034] like Figure 3 , Figure 4 As shown, the main mechanism also includes two friction wheels 114 rotatably mounted below the inner rotating frame 102. A conveying gear 110 is fixedly mounted on the friction wheel 114, and the conveying gear 110 meshes with the movable gear 109.

[0035] like Figure 3 , Figure 4As shown, the main mechanism also includes two clamping rings 111 that are slidably mounted on the inner rotating frame 102. Clamping rollers 112 are rotatably mounted on the clamping rings 111, and clamping springs 113 are provided between the clamping rings 111 and the inner rotating frame 102.

[0036] In use, after adjusting and fixing the adjustment mechanism, the outer protective shell 101 is positioned above the pre-drilled insertion hole on the ground. Then, the steel cage 4 is manually inserted into the outer protective shell 101. When the steel cage 4 is inserted into the inner rotating frame 102, the steel cage 4 contacts the friction wheel 114 and the clamping roller 112. The steel cage 4 pushes the clamping roller 112 and the clamping ring 111 upward, compressing the clamping spring 113. The clamping spring 113 causes the clamping roller 112 to clamp the steel cage 4 onto the friction wheel 114. Then, the steel cage 4 continues to be pushed inward, causing the clamping roller 112 to rotate relative to the clamping ring 111. Finally, the front end of the steel cage 4 contacts the upper end of the inner arc surface 207, at which point the pushing of the steel cage 4 is stopped.

[0037] Subsequently, the rotating motor 103 drives the motor gear 106 to rotate, and the motor gear 106 drives the rotating frame gear 107 and the rotating motor 103 to rotate 90 degrees. The front end of the steel cage 4 slides along the inner arc surface 207. Finally, the front end of the steel cage 4 reaches the lower extension groove 208. When the inner rotating frame 102 rotates, the lower fixed rod 108 drives the inner sliding block 104 to slide along the outer protective shell 101 through the lower rotating rod 105. At this time, the steel cage 4 is in a vertical state, and the movable gear 109 meshes with the docking gear 206.

[0038] like Figure 5 , Figure 6 As shown, the insertion mechanism includes a conveyor motor 203 fixedly installed inside the outer protective housing 101. A drive gear 204 is fixedly installed on the motor shaft of the conveyor motor 203. An intermediate gear 205 and a mating gear 206 are rotatably installed inside the outer protective housing 101. The drive gear 204 meshes with the intermediate gear 205, and the intermediate gear 205 meshes with the mating gear 206.

[0039] like Figure 5 , Figure 6 As shown, the insertion mechanism also includes an upper sealing plate 201 that is slidably mounted on the top of the outer protective shell 101. The upper sealing plate 201 has a notch, and an upper door spring 202 is provided between the upper sealing plate 201 and the outer protective shell 101.

[0040] like Figure 5 , Figure 6 As shown, the insertion mechanism also includes an inner arc surface 207 disposed within the outer protective shell 101, and a lower extension groove 208 is provided at the bottom of the outer protective shell 101.

[0041] When the steel cage 4 rotates with the inner rotating frame 102, the steel cage 4 will enter the notch of the upper closing plate 201. Then the steel cage 4 pushes the upper closing plate 201 to slide along the outer protective shell 101, and the upper door spring 202 is compressed.

[0042] When the front end of the rebar cage 4 reaches above the lower extension groove 208, the conveying motor 203 drives the drive gear 204 to rotate, the drive gear 204 drives the intermediate gear 205 to rotate, the intermediate gear 205 drives the docking gear 206 to rotate, the docking gear 206 drives the movable gear 109 to rotate, the movable gear 109 drives the conveying gear 110 and the friction wheel 114 to rotate, and the friction wheel 114 conveys the rebar cage 4 downward. The front end of the rebar cage 4 is inserted into the insertion hole reserved in the ground, and then concrete is poured into the rebar cage 4.

[0043] like Figure 7 , Figure 8 As shown, the adjustment mechanism includes four rotating sleeves 303 rotatably mounted on the side of the outer protective shell 101. Lifting support legs 301 are slidably mounted inside the rotating sleeves 303, and fixed feet 302 are rotatably mounted below the lifting support legs 301.

[0044] like Figure 7 , Figure 8 As shown, the adjustment mechanism also includes a lifting rack 304 fixedly installed on the lifting leg 301. An adjusting worm wheel 306 and an adjusting worm 307 are rotatably installed inside the rotating sleeve 303. The adjusting worm wheel 306 meshes with the adjusting worm 307. A lifting gear 305 is fixedly installed on the adjusting worm wheel 306. The lifting gear 305 meshes with the lifting rack 304.

[0045] Before use, first move the outer protective shell 101 above the pre-drilled insertion hole on the ground. Turn the adjusting worm gear 307 with an Allen wrench. The adjusting worm gear 307 drives the adjusting worm wheel 306 and the lifting gear 305 to rotate. The lifting gear 305 drives the lifting rack 304 and the lifting leg 301 to slide up and down along the rotating sleeve 303, thereby adjusting the height of the lifting leg 301 relative to the rotating sleeve 303. By raising and lowering the lifting leg 301 in four positions, the outer protective shell 101 can always remain horizontal when working on a sloping road surface. After adjustment, fix the fixed foot 302 on the ground and tighten the bolts between the lifting leg 301 and the fixed foot 302 to fix the lifting leg 301 and the fixed foot 302.

[0046] After construction is completed, the rotating sleeve 303 is adjusted to move upward relative to the lifting outrigger 301, so that the tail end of the steel cage 4 is disengaged from the clamping roller 112 and friction wheel 114, and the outer protective shell 101 is removed from the tail end of the steel cage 4. At this time, the steel cage 4 remains in the road surface. Then, the fixed foot 302 is removed from the ground and the outer protective shell 101 is removed.

[0047] Working principle: Before use, first move the outer protective shell 101 above the pre-drilled insertion hole on the ground. Turn the adjusting worm gear 307 with an Allen wrench. The adjusting worm gear 307 drives the adjusting worm wheel 306 and the lifting gear 305 to rotate. The lifting gear 305 drives the lifting rack 304 and the lifting leg 301 to slide up and down along the rotating sleeve 303, thereby adjusting the height of the lifting leg 301 relative to the rotating sleeve 303. By raising and lowering the lifting leg 301 in four positions, the outer protective shell 101 can always remain horizontal when working on a sloping road surface. After adjustment, fix the fixed foot 302 on the ground and tighten the bolts between the lifting leg 301 and the fixed foot 302 to fix the lifting leg 301 and the fixed foot 302.

[0048] Then, the steel cage 4 is manually inserted into the outer protective shell 101. After the steel cage 4 is inserted into the inner rotating frame 102, the steel cage 4 comes into contact with the friction wheel 114 and the clamping roller 112. The steel cage 4 pushes the clamping roller 112 and the clamping ring 111 upward, which compresses the clamping spring 113. The clamping spring 113 causes the clamping roller 112 to clamp the steel cage 4 on the friction wheel 114. Then the steel cage 4 continues to be pushed inward, causing the clamping roller 112 to rotate relative to the clamping ring 111. Finally, the front end of the steel cage 4 contacts the upper end of the inner arc surface 207, at which point the pushing of the steel cage 4 is stopped.

[0049] Subsequently, the rotating motor 103 drives the motor gear 106 to rotate, which in turn drives the rotating frame gear 107 and the rotating motor 103 to rotate 90 degrees. The front end of the reinforcing cage 4 slides along the inner arc surface 207, and finally the front end of the reinforcing cage 4 reaches the lower extension slot 208. When the inner rotating frame 102 rotates, the lower fixed rod 108 drives the inner sliding block 104 to slide along the outer protective shell 101 through the lower rotating rod 105. At this time, the reinforcing cage 4 is in a vertical state, and the movable gear 109 meshes with the docking gear 206. When the reinforcing cage 4 rotates with the inner rotating frame 102, the reinforcing cage 4 will enter the notch of the upper closing plate 201. Then, the reinforcing cage 4 pushes the upper closing plate 201 to slide along the outer protective shell 101, and the upper door spring 202 is compressed.

[0050] When the front end of the rebar cage 4 reaches above the lower extension slot 208, the conveying motor 203 drives the drive gear 204 to rotate. The drive gear 204 drives the intermediate gear 205 to rotate, the intermediate gear 205 drives the docking gear 206 to rotate, the docking gear 206 drives the movable gear 109 to rotate, and the movable gear 109 drives the conveying gear 110 and the friction wheel 114 to rotate. The friction wheel 114 conveys the rebar cage 4 downwards, and the front end of the rebar cage 4 is inserted into the pre-reserved insertion hole in the ground. Then, concrete is poured into the rebar cage 4. After the construction is completed, the rotating sleeve 303 is adjusted to move upward relative to the lifting leg 301, so that the tail end of the rebar cage 4 disengages from the clamping roller 112 and the friction wheel 114, and the outer protective shell 101 leaves the tail end of the rebar cage 4. At this time, the rebar cage 4 remains in the road surface. Then, the fixed foot 302 is released from the ground, and the outer protective shell 101 is removed.

[0051] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the present invention based on the technical solution and inventive concept of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A bored pile construction device for road construction, comprising a main mechanism for placing a reinforcement cage (4), characterized in that: The main structure includes an outer protective shell (101), and the main structure is provided with an insertion mechanism for inserting the steel cage (4) into the ground and an adjustment mechanism for adjusting the construction height and angle.

2. The cast-in-place pile construction device for highway construction of claim 1, wherein: The main structure includes an inner rotating frame (102) rotatably mounted inside an outer protective shell (101), a rotating frame gear (107) fixedly mounted on the inner rotating frame (102), a rotating motor (103) fixedly mounted on the outer protective shell (101), a motor gear (106) fixedly mounted on the motor shaft of the rotating motor (103), and the motor gear (106) meshing with the rotating frame gear (107).

3. The cast-in-place pile construction device for highway construction of claim 2, characterized in that: The main structure also includes a lower fixed rod (108) fixedly installed below the inner rotating frame (102), a lower rotating rod (105) rotatably installed below the lower fixed rod (108), an inner sliding block (104) rotatably installed on the lower rotating rod (105), the inner sliding block (104) slidably installed with the outer protective shell (101), and a movable gear (109) rotatably installed on the lower fixed rod (108).

4. The construction device for cast-in-place piles in highway construction according to claim 3, characterized in that: The main structure also includes two friction wheels (114) rotatably mounted below the inner rotating frame (102), and a conveying gear (110) is fixedly mounted on the friction wheels (114), which meshes with the movable gear (109).

5. The construction device for cast-in-place piles in highway construction according to claim 4, characterized in that: The main body mechanism also includes two clamping rings (111) that are slidably installed above the inner rotating frame (102). A clamping roller (112) is rotatably installed on the clamping ring (111), and a clamping spring (113) is provided between the clamping ring (111) and the inner rotating frame (102).

6. The construction device for cast-in-place piles in highway construction according to claim 1, characterized in that: The insertion mechanism includes a conveyor motor (203) fixedly installed inside the outer protective shell (101). A drive gear (204) is fixedly installed on the motor shaft of the conveyor motor (203). An intermediate gear (205) and a mating gear (206) are rotatably installed inside the outer protective shell (101). The drive gear (204) meshes with the intermediate gear (205), and the intermediate gear (205) meshes with the mating gear (206).

7. A construction device for cast-in-place piles in highway construction according to claim 6, characterized in that: The insertion mechanism also includes an upper sealing plate (201) that is slidably mounted on the top of the outer protective shell (101). The upper sealing plate (201) has a notch, and an upper door spring (202) is provided between the upper sealing plate (201) and the outer protective shell (101).

8. A construction device for cast-in-place piles in highway construction according to claim 7, characterized in that: The insertion mechanism also includes an inner arc surface (207) disposed within the outer protective shell (101), and a lower extension groove (208) is provided at the bottom of the outer protective shell (101).

9. A construction device for cast-in-place piles in highway construction according to claim 1, characterized in that: The adjustment mechanism includes four rotating sleeves (303) rotatably mounted on the side of the outer protective shell (101), with lifting legs (301) slidably mounted inside the rotating sleeves (303), and fixed feet (302) rotatably mounted below the lifting legs (301).

10. A construction device for cast-in-place piles in highway construction according to claim 9, characterized in that: The adjustment mechanism also includes a lifting rack (304) fixedly installed on the lifting outrigger (301), an adjusting worm wheel (306) and an adjusting worm (307) rotatably installed inside the rotating housing (303), the adjusting worm wheel (306) meshing with the adjusting worm (307), a lifting gear (305) fixedly installed on the adjusting worm wheel (306), and the lifting gear (305) meshing with the lifting rack (304).

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