Self-walking type pile foundation guide pipe lifting device and foundation pit fender post construction method

Abstract

The invention relates to a self-walking type pile foundation guide pipe lifting device and a foundation pit fender post construction method. The guide pipe lifting device comprises a supporting system, a walking system, a power system and a first hoisting device. The supporting system comprises a base and a supporting frame. The walking system comprises four liftable supporting legs and a hydraulic walking type walking chassis; the driving system comprises a distribution box and a winch; the supporting frame and the driving system are arranged on the base, the lifting supporting legs are arranged at the four corners of the base, the hydraulic walking type walking chassis is attached to the lower bottom face of the base, and the first hoisting device comprises a first steel wire rope and a first pulley. According to the self-walking type pile foundation guide pipe lifting device, lifting operation of the guide pipe can be conducted, in the foundation pit fender post construction method, the guide pipe lifting device and a crane are matched to complete construction of the whole underneath passing tunnel foundation pit fender post, and therefore the construction efficiency of the whole underneath passing tunnel foundation pit fender post construction is improved, the equipment cost is reduced, and the construction period is shortened.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel foundation pit retaining pile construction, and more specifically, to a self-propelled pile foundation guide pipe lifting device and a foundation pit retaining pile construction method. Background Art

[0002] With the rapid development of urban transportation construction, a large number of underpass tunnel projects have emerged. The number of foundation pit retaining piles is large and the construction period is tight. The construction progress of the underpass tunnel retaining pile foundation is becoming more and more important. Traditional retaining pile foundation construction uses rotary drilling or rotary drilling rigs to drill holes, supplemented by cranes to place steel cages and pour concrete. Specifically: the underpass tunnel foundation pit retaining piles use cranes to lift the guide tube to pour concrete. It only takes 40 to 60 minutes for rotary drilling and rotary drilling to drill a retaining pile, while it takes 2 to 3 hours for the crane to lower the steel cage and pour concrete. There is a serious problem of mismatch between the pouring speed and the hole speed. If the pouring speed is to match the drilling speed, an additional crane is needed, which will increase the cost. Summary of the invention

[0003] The object of the present invention is to provide a self-propelled pile foundation guide pipe lifting device and a foundation pit retaining pile construction method to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a self-propelled pile foundation conduit lifting device, the conduit lifting device includes a support system, a walking system, a power system and a first lifting device; the support system includes a base and a support frame; the walking system includes four liftable legs and a hydraulic crawler-type walking chassis; the drive system includes a distribution box and a winch; the support frame and the drive system are arranged on the base, the liftable legs are arranged at the four corners of the base, the hydraulic crawler-type walking chassis is attached to the lower bottom surface of the base, and the first lifting device includes a first steel wire rope and a first pulley; the first pulley is arranged on the top of the support frame, the first steel wire rope is arranged on the winch, and the lifting end of the first steel wire rope passes through the first pulley to lift the conduit.

[0005] Preferably, the support frame includes a first frame body and a second frame body, the first frame body and the second frame body are an integral structure, the first frame body is located below the second frame body, the first frame body is roughly square, the second frame body is roughly conical, the first frame body is provided with an oblique brace, the two ends of the oblique brace are respectively connected to the support tube of the first frame body close to the winch, and the other end is connected to the upper surface of the base.

[0006] Preferably, the first frame and the second frame are each composed of multiple segments, and the support pipes of adjacent segments are connected by flanges.

[0007] Preferably, the catheter lifting device is also provided with a second lifting device, which includes a second steel wire rope, a second pulley, a third pulley, and a pulley fixing seat. The pulley fixing seat is mounted on the front and rear support tubes on the top of the first frame, and the second pulley and the third pulley are respectively located at both ends of the pulley fixing seat. The second steel wire rope is arranged on the winch, and its lifting end successively passes through the second pulley and the third pulley and is located between the lifting end of the first steel wire rope and the outer support tube of the first frame.

[0008] Preferably, the second lifting device is also provided with a fixed seat support tube, one end of the pulley fixed seat is fixed on the inner support tube of the first frame, and the other end is located inside the outer support tube of the first frame and supported by the fixed seat support tube, and the bottom of the fixed seat support tube is connected to the upper surface of the base.

[0009] Preferably, the pulley fixing seat is provided with a moving cavity, a moving block is provided in the moving cavity for movement, the catheter lifting device is also provided with a connecting inclined rod, corresponding screw holes are provided on the moving block and the pulley fixing seat at intervals, and are fixed by bolts, the third pulley is provided on the upper surface of the end of the moving block away from the second pulley, the bottom of the pulley fixing seat located below the third pulley is provided with a second inclined rod mounting portion for mounting the free end of the connecting inclined rod, the fixing seat support tube is provided with a first inclined rod mounting portion for mounting the fixed end of the connecting inclined rod, a connecting cross bar is provided between the support tubes on the outside of the first frame body located below the side of the first inclined rod mounting portion, and the connecting cross bar is provided with a third inclined rod mounting portion for mounting the free end of the connecting inclined rod. The free end of the connecting inclined rod is connected to either the second inclined rod mounting portion or the third inclined rod mounting portion, and when the moving block extends outward, the third pulley is located on the outside of the first steel wire rope.

[0010] The present invention also provides a foundation pit retaining pile construction method, in which the above-mentioned self-propelled pile foundation guide pipe lifting device is applied, and the construction method comprises the following steps:

[0011] Step 1: Drilling and forming holes with a crane;

[0012] Step 2: The crane places the steel cage;

[0013] Step 3: The catheter lifting device moves automatically to the side of the hole;

[0014] Step 4: The catheter lifting device places the catheter;

[0015] Step 5: Set up the funnel and water stopper on the catheter lifting device;

[0016] Step 6: The concrete truck pours concrete into the conduit through the funnel;

[0017] Step 7: The catheter lifting device lifts the catheter.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The support frame provided by the self-propelled pile foundation catheter lifting device provided by the present invention is provided with diagonal braces, so that the entire support frame is more stable. In addition, the self-propelled pile foundation catheter lifting device is also provided with a second lifting device. Since the third pulley of the second lifting device can be located on the outside of the first steel wire rope after being extended, the volume of the hoisted object can be larger and the lifting range can be larger.

[0020] Compared with the prior art, the construction method of the foundation pit retaining piles for the underpass tunnel provided by the present invention is that in the prior art, steps 1-7 are completed by a crane alone, while in the construction method of the present invention, steps 1-3 are completed by a crane alone, and steps 4-7 are completed by the self-propelled pile foundation guide pipe lifting device provided by the present invention. Therefore, the guide pipe lifting device and the crane cooperate to complete the construction of the entire underpass tunnel foundation pit retaining piles, thereby improving the construction efficiency of the entire underpass tunnel foundation pit retaining pile construction, reducing equipment costs, and shortening the construction period. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A side view of a first embodiment of a self-propelled pile foundation guide tube lifting device provided by the present invention;

[0022] Figure 2 A rear view of the first embodiment of the self-propelled pile foundation guide tube lifting device provided by the present invention;

[0023] Figure 3 A side view of a second embodiment of the self-propelled pile foundation guide tube lifting device provided by the present invention;

[0024] Figure 4 A state diagram of the second embodiment provided by the present invention when the moving block is extended;

[0025] Figure 5 A state diagram of the mobile block in the initial state of the second embodiment provided by the present invention;

[0026] Figure 6 A schematic structural diagram of a connecting diagonal rod of the second embodiment provided by the present invention;

[0027] In the figure: base 1, support frame 2, flange 20, first frame 21, second frame 22, diagonal brace 220, connecting cross bar 221, third diagonal bar mounting part 2211, liftable support leg 31, hydraulic walking chassis 32, distribution box 41, winch 42, first steel wire rope 51, first pulley 52, second steel wire rope 61, second pulley 62, third pulley 63, pulley fixing seat 64, moving block 65, second diagonal bar mounting part 651, connecting diagonal bar 66, fixing seat support tube 67, first diagonal bar mounting part 671, bolt 68. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Embodiment 1:

[0030] A self-propelled pile foundation conduit lifting device, the conduit lifting device includes a support system, a walking system, a power system and a first hoisting device; the support system includes a base 1 and a support frame 2; the walking system includes four liftable legs 31 and a hydraulic walking walking chassis 32; the drive system includes a distribution box 41 and a winch 42; the support frame 2 and the drive system are arranged on the base 1, the four corners of the base 1 are provided with liftable legs 31, the hydraulic walking walking chassis 32 is lifted and attached to the lower bottom surface of the base 1, and the first hoisting device includes a first steel wire rope 51 and a first pulley 52; the first pulley 52 is arranged on the top of the support frame 2, the first steel wire rope 51 is arranged on the winch 42, and the hoisting end of the first steel wire rope 51 passes through the first pulley 52 to lift the conduit.

[0031] In this solution, after the crane completes the installation of the pile foundation reinforcement cage, the machine will be moved to the hole position. After the legs are fixed, the guide tube will be installed to clean the hole and pour concrete. The crane will then go to the next hole position to install the reinforcement cage, greatly improving efficiency.

[0032] The support frame 2 includes a first frame body 21 and a second frame body 22. The first frame body 21 and the second frame body 22 are an integrated structure. The first frame body 21 is located below the second frame body 22. The first frame body 21 is roughly square, and the second frame body 22 is roughly conical. The first frame body 21 is provided with a diagonal brace 220. The two ends of the diagonal brace 220 are respectively connected to the support pipe of the first frame body 21 close to the winch 42, and the other end is connected to the upper surface of the base 1. This solution enhances the stability of the entire support frame by setting the above-mentioned first frame body and second frame body, and setting the diagonal brace at the same time.

[0033] The first frame 21 and the second frame 22 are each composed of multiple segments, and the support pipes of adjacent segments are connected by flanges 20. In this solution, the support pipes of adjacent segments are connected by flanges, so as to facilitate the disassembly of the support frame and the change of the height of the support frame.

[0034] The catheter lifting device is also provided with a second lifting device, which includes a second steel wire rope 61, a second pulley 62, a third pulley 63, and a pulley fixing seat 64. The fixing seat support tube 67 and the pulley fixing seat 64 are mounted on the front and rear support tubes on the top of the first frame 21. The second pulley 62 and the third pulley 63 are respectively located at both ends of the pulley fixing seat 64. The second steel wire rope 62 is arranged on the winch 42, and its lifting end passes through the second pulley 62 and the third pulley 63 in turn and is located between the lifting end of the first steel wire rope 51 and the outer support tube of the first frame 21.

[0035] This solution enables the catheter lifting device to also lift other objects by providing a second lifting device, thus achieving multiple uses of one machine.

[0036] Embodiment 2:

[0037] This embodiment is based on the first embodiment, and the catheter lifting device is also provided with a fixed seat support tube 67, one end of the pulley fixed seat 64 is fixed on the inner support tube of the first frame 21, and the other end is located inside the outer support tube of the first frame 21 and supported by the fixed seat support tube 67, and the bottom of the fixed seat support tube 67 is connected to the upper surface of the base 1.

[0038] The pulley fixing seat 64 is provided with a moving cavity, in which a moving block 65 is movable, and the catheter lifting device is also provided with a connecting inclined rod 66. Corresponding screw holes are arranged at intervals on the moving block 65 and the pulley fixing seat 64, and are fixed by bolts 68. A third pulley 63 is provided on the upper surface of the end of the moving block 65 away from the second pulley 62, and a second inclined rod mounting portion 651 for mounting the free end of the connecting inclined rod 66 is provided at the bottom of the pulley fixing seat 64 located below the third pulley 63. A first inclined rod mounting portion 671 for mounting the fixed end of the connecting inclined rod 66 is provided on the fixing seat support tube 67, and a connecting cross bar 221 is provided between the support tubes on the outer side of the first frame 21 located below the side of the first inclined rod mounting portion 671, and a third inclined rod mounting portion 2211 for mounting the free end of the connecting inclined rod 66 is provided on the connecting cross bar 221. The free end of the connecting diagonal rod 66 is connected to either the second diagonal rod mounting portion 651 or the third diagonal rod mounting portion 2211 . When the moving block 65 extends outward, the third pulley 63 is located outside the first steel wire rope 51 .

[0039] This solution provides a more stable support for the pulley fixed seat by setting a fixed seat support tube; the third pulley of this solution can extend out of the outside of the first steel wire rope, so that the volume of the hoisted object can be larger and the hoisting range can be larger. In addition, mounting parts are provided at the free ends of two connecting oblique rods to support the moving block after the moving block is moved out, and in the initial state (when the moving block has not moved), the fixed seat support tube and the connecting cross rod are connected to enhance the stability of the entire support frame.

[0040] The present invention also provides a foundation pit retaining pile construction method, wherein the self-propelled pile foundation guide pipe lifting device is applied to the construction method, and the construction method comprises the following steps:

[0041] Step 1: Drilling and forming holes with a crane;

[0042] Step 2: The crane places the steel cage;

[0043] Step 3: The catheter lifting device moves automatically to the side of the hole;

[0044] Step 4: The catheter lifting device places the catheter;

[0045] Step 5: Set up the funnel and water stopper on the catheter lifting device;

[0046] Step 6: The concrete truck pours concrete into the conduit through the funnel;

[0047] Step 7: The catheter lifting device lifts the catheter.

[0048] Compared with the prior art, the foundation pit retaining pile construction method provided by the present invention is that in the prior art, steps 1-7 are completed by a crane alone, while in the construction method of the present invention, steps 1-3 are completed by a crane alone, and steps 4-7 are completed by the self-propelled pile foundation guide pipe lifting device provided by the present invention. Therefore, the entire underpass tunnel foundation pit retaining pile construction method greatly improves the use efficiency of the crane, thereby improving the construction efficiency of the entire underpass tunnel foundation pit retaining pile construction, thereby reducing equipment costs and shortening construction period.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A self-propelled pile foundation pipe lifting device, characterized in that: The catheter lifting device includes a support system, a walking system, a power system and a first hoisting device; the support system includes a base and a support frame; the walking system includes four liftable legs and a hydraulic crawler-type walking chassis; the drive system includes a distribution box and a winch; the support frame and the drive system are arranged on the base, the liftable legs are arranged at the four corners of the base, the hydraulic crawler-type walking chassis is attached to the lower bottom surface of the base, and the first hoisting device includes a first steel wire rope and a first pulley; the first pulley is arranged on the top of the support frame, the first steel wire rope is arranged on the winch, and the hoisting end of the first steel wire rope passes through the first pulley to lift the catheter.

2. A self-propelled pile foundation guide tube lifting device according to claim 1, characterized in that: The support frame includes a first frame body and a second frame body. The first frame body and the second frame body are an integrated structure. The first frame body is located below the second frame body. The first frame body is roughly square and the second frame body is roughly conical. The first frame body is provided with an oblique brace. The two ends of the oblique brace are respectively connected to the support pipe of the first frame body close to the winch, and the other end is connected to the upper surface of the base.

3. The self-propelled pile foundation guide tube lifting device according to claim 1, characterized in that: The first frame and the second frame are each composed of multiple segments, and the support pipes of adjacent segments are connected by flanges.

4. The self-propelled pile foundation guide tube lifting device according to claim 1, characterized in that: The catheter lifting device is also provided with a second lifting device, which includes a second steel wire rope, a second pulley, a third pulley, and a pulley fixing seat. The pulley fixing seat is mounted on the front and rear support tubes on the top of the first frame. The second pulley and the third pulley are respectively located at both ends of the pulley fixing seat. The second steel wire rope is arranged on the winch, and its lifting end successively passes through the second pulley and the third pulley and is located between the lifting end of the first steel wire rope and the outer support tube of the first frame.

5. A self-propelled pile foundation guide tube lifting device according to claim 4, characterized in that: The second lifting device is also provided with a fixed seat support tube, one end of the pulley fixed seat is fixed on the inner support tube of the first frame, and the other end is located inside the outer support tube of the first frame and supported by the fixed seat support tube, and the bottom of the fixed seat support tube is connected to the upper surface of the base.

6. A self-propelled pile foundation guide tube lifting device according to claim 5, characterized in that: The pulley fixing seat is provided with a moving cavity, a moving block is provided in the moving cavity, and the catheter lifting device is also provided with a connecting inclined rod. The moving block and the pulley fixing seat are provided with corresponding screw holes at intervals and fixed by bolts. The upper surface of the end of the moving block away from the second pulley is provided with the third pulley, and the bottom of the pulley fixing seat located below the third pulley is provided with a second inclined rod mounting portion for mounting the free end of the connecting inclined rod. The fixing seat support tube is provided with a first inclined rod mounting portion for mounting the fixed end of the connecting inclined rod, and a connecting cross bar is provided between the support tubes on the outside of the first frame body located below the side of the first inclined rod mounting portion, and the connecting cross bar is provided with a third inclined rod mounting portion for mounting the free end of the connecting inclined rod. The free end of the connecting inclined rod is connected to either the second inclined rod mounting portion or the third inclined rod mounting portion. When the moving block extends out to the outermost end, the third pulley is located on the outside of the first steel wire rope.

7. A foundation pit retaining pile construction method, characterized in that: A self-propelled pile foundation guide tube lifting device according to any one of claims 1 to 6 is applied to the construction method, and the construction method comprises the following steps: Step 1: Drilling and forming holes with a crane; Step 2: The crane places the steel cage; Step 3: The catheter lifting device moves automatically to the side of the hole; Step 4: The catheter lifting device places the catheter; Step 5: Set up the funnel and water stopper on the catheter lifting device; Step 6: The concrete truck pours concrete into the conduit through the funnel; Step 7: The catheter lifting device lifts the catheter.

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