Grouting pipe buffering device and high-pressure jet grouting pile machine

Abstract

The utility model provides a grouting pipe buffering device and a high-pressure jet grouting pile machine. The grouting pipe buffering device comprises a frame body, a buffering frame, a lifting frame, a guide rod, a hoisting lug plate, a stretching sensor, a right-angle plate and a rope head fixing plate. The frame body comprises a frame top plate, a frame bottom plate, a frame front plate and a frame rear plate; the buffer rack is located in an inner cavity of the frame; the two buffering frame guide pipes are arranged left and right along the buffering frame; a cylinder barrel of the nitrogen spring penetrates through the buffer frame bottom plate and then is fixedly mounted with the frame bottom plate; the lifting frames are arranged in a bilateral symmetry mode. The guide rods respectively penetrate through the frame top plate, the buffer frame guide pipes and the frame bottom plate and are locked by bolts; the hoisting lug plate is arranged at the bottom of the hoisting frame, and the lower end is connected with an external grouting pipe; the right-angle plate is fixedly arranged on one side of the frame bottom plate; and the stretching sensor is fixedly arranged on the right-angle plate. The grouting pipe butt joint device solves the problems of up-and-down dislocation and mutual collision during grouting pipe butt joint, the grouting pipes are conveniently lengthened, additionally connected, disassembled and removed, the service life of components is prolonged, and stability and reliability of foundation reinforcement operation are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of pile foundation construction, in particular to a grouting pipe buffer device and a high-pressure jet grouting pile machine. Background Art

[0002] In the foundation reinforcement construction of existing industrial and civil buildings, the high-pressure rotary jetting process is usually adopted to improve the bearing capacity of the foundation. The grouting pipe is placed in the pre-drilled hole of the foundation by a high-pressure jet grouting pile machine. During the rotation and lifting process of the grouting pipe, the slurry pre-configured under a certain pressure is sprayed from the nozzle at the end of the drill rod to impact the soil body, so that the slurry and the soil body are stirred and mixed and then coagulated and consolidated. After acting together with the soil body between the piles and the cushion layer, a high-strength composite foundation is formed. In the actual construction process of the existing high-pressure jet grouting pile machine, the power head of the high-pressure jet grouting pile machine is movably installed on the front of the mast of the pile driver. The grouting pipe is lifted and lowered by operating the winch of the pile driver to release and retract the steel wire rope. The grouting pipe passes through the power driving part and rotates and sprays the slurry on the underground soil layer when descending; as the depth of the foundation reinforcement treatment increases, the grouting pipe needs to be continuously connected. The upper end of the grouting pipe is connected to the sling of the pile driver. When descending, it will impact the power head of the high-pressure jet grouting pile machine, and there will be problems of vertical misalignment and mutual collision when docking with the grouting pipe entering the formation below, resulting in premature damage of the components and affecting the stability of the foundation reinforcement treatment process. Therefore, it is necessary to improve the docking technology of the grouting pipe of the high-pressure jet grouting pile machine. Summary of the Utility Model

[0003] In order to solve the problems of vertical misalignment and mutual impact when the grouting pipe of the existing high-pressure jet grouting pile machine is connected, the utility model provides a grouting pipe buffer device and a high-pressure jet grouting pile machine, which are convenient for the docking and lengthening and disassembly and removal of the grouting pipe, can detect and transmit the load value of the buffer rack in real time, improve the construction efficiency of the foundation reinforcement, ensure the safety and reliability of the operation process, and extend the service life of the high-pressure jet grouting pile machine and its components.

[0004] In order to achieve the above object, according to the first aspect of this article, the utility model provides a grouting pipe buffer device, which includes a frame body, a buffer rack, a lifting rack, a guide rod, a lifting lug plate, a tensile sensor, a right-angle plate, and a rope head fixing plate. The frame body includes a frame top plate, a frame bottom plate, a frame front plate, and a frame rear plate;

[0005] The buffer rack includes a buffer rack top plate, a buffer rack bottom plate, a nitrogen spring, and a buffer rack guide pipe, and is located in the inner cavity of the frame body; two buffer rack guide pipes are arranged along the left-right direction of the buffer rack; the nitrogen spring is arranged in the space formed between the buffer rack top plate, the buffer rack bottom plate, and the buffer rack guide pipe, and its cylinder barrel passes through the buffer rack bottom plate and is fixedly installed on the frame bottom plate of the frame body;

[0006] The lifting frame includes a lifting frame top plate, a lifting frame bottom plate, and lifting frame vertical plates. The lifting frame is arranged symmetrically left and right and is inserted into and fixedly installed with the slow frame bottom plate of the buffer frame from both sides of the frame body respectively;

[0007] Two guiding rods are provided, which respectively pass through the frame top plate of the frame body, the slow frame conduit of the buffer frame, and the frame bottom plate of the frame body and are locked with pins;

[0008] The lifting ear plate is arranged at the bottom of the lifting frame, and its lower end is connected to an external grouting pipe;

[0009] The right-angle plate is fixedly installed on one side of the frame bottom plate of the frame body;

[0010] The rope end fixing plate is fixedly installed on one side of the slow frame bottom plate of the buffer frame;

[0011] The tension sensor is fixedly installed on the vertical plate of the right-angle plate, and its extending rod is placed in the short sleeve of the rope end fixing plate.

[0012] Preferably, two guide rod holes with equal spacing are respectively arranged on the frame top plate and the frame bottom plate of the frame body; two bottom plate short grooves that are parallel to each other and located outside the guide rod holes are arranged on both side edges of the frame bottom plate; a plurality of reinforcing rib plates are arranged in the inner cavity of the frame body, and they are respectively arranged between the frame top plate of the frame body and the frame front plate and the frame rear plate, and between the frame bottom plate and the frame front plate and the frame rear plate.

[0013] Preferably, the spacing of the slow frame conduits of the buffer frame is respectively equal to the through-hole spacing of the frame top plate and the frame bottom plate of the frame body, and the slow frame bottom plate is also provided with a bottom plate through-hole adapted to the cylinder barrel of the nitrogen spring; the cylinder barrel of the nitrogen spring of the buffer frame passes through the bottom plate through-hole of the slow frame bottom plate, and an adjusting gasket is installed between its bottom and the frame bottom plate of the frame body. After the piston of the nitrogen spring is completely retracted into the inner cavity of the cylinder barrel, its end is in contact with the slow frame top plate.

[0014] Preferably, the lifting frame vertical plates of the lifting frame are two parallel arcuate plates, and their upper and lower ends are respectively welded to the lifting frame top plate and the lifting frame bottom plate; a semi-circular hole is arranged on one side of the lifting frame top plate.

[0015] A high-pressure rotary jet grouting pile machine includes a grouting pipe buffer device according to any one of the foregoing items.

[0016] The utility model provides a grouting pipe buffer device and a high-pressure rotary jet grouting rig, which have the following beneficial effects compared with the prior art: 1) The frame body adopts a frame structure welded by plates, and reinforcing rib plates are respectively arranged on both sides of the top and bottom ends of its inner cavity, effectively ensuring the strength of the frame body; 2) The buffer frame slides up and down in the inner cavity of the frame body through the buffer frame conduits on both sides, ensuring reliable guidance and smooth movement, and ensuring the stable and reliable operation of the foundation reinforcement operation; 3) The nitrogen spring is located in the inner cavity of the buffer frame, can generate a greater force in a smaller space, and generates a force at the beginning of the piston stroke, and the force changes very little with the change of the piston stroke, effectively ensuring the stable and reliable operation of the buffer device; 4) The tension sensor is located on one side of the buffer device. During the process of the buffer frame lifting the grouting pipe, it can detect the load of the buffer frame in real time and transmit the load value to the control and display system of the high-pressure rotary jet grouting rig. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 FIG. is a three-dimensional structure diagram of the grouting pipe buffer device and the high-pressure rotary jet grouting rig of the utility model;

[0018] Figure 2 is Figure 1 the front view of

[0019] Figure 3 is Figure 2 the left view of

[0020] Figure 4 is Figure 3 the sectional view taken along the line A-A in

[0021] Figure 5 is Figure 2 the sectional view taken along the line B-B in

[0022] Figure 6 is Figure 4 the sectional view taken along the line C-C in

[0023] Figure 7 is Figure 4 the sectional view taken along the line D-D in

[0024] Figure 8 is Figure 2 the top view of

[0025] Figure 9 is Figure 2 the view in the direction of E of

[0026] Figure 10 is Figure 3 the partial enlarged view of part M in

[0027] Figure 11 is Figure 4 the partial enlarged view of part N in

[0028] Wherein: 21 - frame body, 211 - front frame plate, 211' - rear frame plate, 212 - top frame plate, 212' - bottom frame plate, 2121' - short slot on the bottom plate, guide rod holes - 215, 216 - reinforcing rib plates, 22 - buffer frame, 221 - top buffer frame plate, 222 - buffer frame conduit, 223 - bottom buffer frame plate, 227 - nitrogen spring, 23 - lifting frame, 231 - top lifting frame plate, 232 - vertical lifting frame plate, 233 - bottom lifting frame plate, 24 - guide rod, 25 - lifting lug plate, 26 - tension sensor, 261 - sensor protruding head, 27 - right-angle plate, 28 - rope head fixing plate, 281 - short sleeve. Detailed implementation mode

[0029] The following further describes the grouting pipe buffer device and the high-pressure jet grouting rig of the present utility model in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present utility model and cannot be used to limit the protection scope of the present utility model.

[0030] As Figure 1-7 , the present utility model provides a grouting pipe buffer device, including a frame body 21, a buffer frame 22, a lifting frame 23, a guide rod 24, a lifting lug plate 25, a tension sensor 26, a right-angle plate 27, and a rope head fixing plate 28. The frame body 21 includes a top frame plate 212, a bottom frame plate 212', a front frame plate 211, and a rear frame plate 211';

[0031] The buffer frame 22 includes a top buffer frame plate 221, a bottom buffer frame plate 223, a nitrogen spring 227, and a buffer frame conduit 222, which is located in the inner cavity of the frame body 21; two buffer frame conduits 222 are arranged along the left-right direction of the buffer frame 22; the nitrogen spring 227 is arranged in the space formed among the top buffer frame plate 221, the bottom buffer frame plate 223, and the buffer frame conduit 222, and its cylinder barrel passes through the bottom buffer frame plate 223 of the buffer frame 22 and is fixedly installed with the bottom frame plate 212' of the frame body 21;

[0032] The lifting frame 23 includes a top lifting frame plate 231, a bottom lifting frame plate 233, and a vertical lifting frame plate 232. The lifting frame is arranged symmetrically left and right and is respectively inserted from both sides of the frame body 21 and fixedly installed with the bottom buffer frame plate 223 of the buffer frame 22;

[0033] Two guide rods 24 are provided, which respectively pass through the top frame plate 212 of the frame body 21, the buffer frame conduit 222 of the buffer frame 22, and the bottom frame plate 212' of the frame body 21 and are locked by pins;

[0034] The lifting lug plate 25 is arranged at the bottom of the lifting frame 24, and its lower end is connected to an external grouting pipe;

[0035] The right-angle plate 27 is fixedly installed on one side of the bottom frame 212' of the frame body 21;

[0036] The rope end fixing plate 28 is fixedly installed on one side of the buffer frame bottom plate 223 of the buffer frame 22;

[0037] The tension sensor 26 is fixedly installed on the protruding part of the right-angle plate 27, and its sensor protruding head 261 is placed in the short sleeve 281 of the rope end fixing plate 28.

[0038] Specifically, two guide rod holes 215 with equal spacing are respectively arranged on the frame top plate 212 and the frame bottom plate 212' of the frame body 21; two bottom plate short grooves 2121' that are parallel to each other and located outside the guide rod holes are arranged on both side edges of the frame bottom plate 212'; a plurality of reinforcing rib plates 216 are arranged in the inner cavity of the frame body 21, and they are respectively arranged between the frame top plate 212 of the frame body 21 and the frame front plate 211 and the frame rear plate 211', and between the frame bottom plate 212' and the frame front plate 211 and the frame rear plate 211'.

[0039] Specifically, the spacing between the buffer guide pipes 222 of the buffer frame 22 is respectively equal to the through-hole spacing of the frame top plate 212 and the frame bottom plate 212' of the frame body 21, and the buffer frame bottom plate 223 is also provided with a bottom plate through-hole adapted to the cylinder barrel of the nitrogen spring; the cylinder barrel of the nitrogen spring 227 of the buffer frame 22 passes through the bottom plate through-hole of the buffer frame bottom plate 223, and an adjusting gasket is added between its bottom and the frame bottom plate 212' of the frame body 21 to adjust the free state position of the nitrogen spring 227, so that the end of the nitrogen spring is in close contact with the buffer frame top plate 212 after the piston of the nitrogen spring is fully retracted into the inner cavity of the cylinder barrel.

[0040] Specifically, the lifting frame vertical plates 232 of the lifting frame 23 are two parallel arcuate plates, and their upper and lower ends are respectively welded to the lifting frame top plate 231 and the lifting frame bottom plate 233; a semi-circular hole is arranged on one side of the lifting frame top plate 231.

[0041] The utility model also relates to a high-pressure rotary jet grouting pile machine, which includes the above-mentioned grouting pipe buffer device.

[0042] When the grouting pipe buffer device of the utility model and the high-pressure rotary jet grouting rig are actually applied, the control cable of the tension sensor is properly connected, a rotating hook is installed below the lifting ear plate, and the upper end of the grouting pipe to be connected is connected to the rotating hook; the lifting frame hoists the grouting pipe downward through the lifting ear plate and completes the butt joint with the lower grouting pipe; since the nitrogen spring of the buffer frame is in a compressed state, the piston extension at its upper end always pushes against the buffer frame, thus ensuring the smooth and reliable up and down movement of the grouting pipe and effectively alleviating the situation of mutual impact and dislocation during the butt joint of the grouting pipes; when the connection between the lifting ear plate and the grouting pipe is released, the downward pressure acting on the nitrogen spring is slowly released, and as the piston of the nitrogen spring slowly extends, the slow frame top plate of the buffer frame and the connected lifting frame move upward along the two guide rods, effectively avoiding the mutual impact of each component and ensuring the construction safety performance. When the buffer frame hoists the grouting pipe, the tension sensor real-time detects the load size of the buffer frame and transmits the load value to the control and display system of the high-pressure rotary jet grouting rig.

[0043] Without departing from the general concept of the utility model, various transformations and improvements can also be made to the utility model. However, as long as it constitutes the same or equivalent to the utility model, it also belongs to the protection scope of the utility model.

Claims

1. A grouting pipe buffer device, characterized in that: It includes a frame body, a buffer frame, a lifting frame, a guide rod, a lifting ear plate, a tensile sensor, a right angle plate, and a rope head fixing plate. The frame body includes a frame top plate, a frame bottom plate, a frame front plate, and a frame rear plate. The buffer frame includes a buffer frame top plate, a buffer frame bottom plate, a nitrogen spring, and a buffer frame conduit, which are located in the inner cavity of the frame body; two buffer frame conduits are arranged along the left and right directions of the buffer frame; the nitrogen spring is arranged in the space formed between the buffer frame top plate, the buffer frame bottom plate, and the buffer frame conduit, and its cylinder passes through the buffer frame bottom plate of the buffer frame and is fixed to the frame bottom plate of the frame body; The lifting frame includes a lifting frame top plate, a lifting frame bottom plate, and a lifting frame vertical plate. The lifting frame is arranged in a bilaterally symmetrical manner and is respectively inserted from both sides of the frame body and fixedly mounted on the buffer frame bottom plate of the buffer frame. Two guide rods are provided, which respectively pass through the frame top plate of the frame body, the buffer frame guide tube of the buffer frame, and the frame bottom plate of the frame body and are locked with latches; The hoisting lug plate is arranged at the bottom of the lifting frame, and the lower end thereof is connected to the external grouting pipe; The right-angle plate is fixedly mounted on one side of the frame bottom plate of the frame body; The rope head fixing plate is fixedly mounted on one side of the buffer frame bottom plate of the buffer frame; The stretching sensor is fixed on the vertical plate of the right-angle plate, and the extension rod thereof is placed in the short sleeve of the rope head fixing plate.

2. The grouting pipe buffer device according to claim 1, characterized in that: The frame top plate and the frame bottom plate of the frame body are respectively provided with two guide rod holes with equal spacing; the two side edges of the frame bottom plate are each provided with two bottom plate short grooves which are parallel to each other and located outside the guide rod holes; the inner cavity of the frame body is provided with a plurality of reinforcing rib plates, which are respectively arranged between the frame top plate and the frame front plate and the frame rear plate of the frame body, and between the frame bottom plate and the frame front plate and the frame rear plate.

3. The grouting pipe buffer device according to claim 1, characterized in that: The spacing between the buffer frame guide tubes of the buffer frame is equal to the spacing between the through holes of the frame top plate and the frame bottom plate of the frame body, respectively. The buffer frame bottom plate is also provided with a bottom plate through hole adapted to the cylinder of the nitrogen spring; the cylinder of the nitrogen spring of the buffer frame passes through the bottom plate through hole of the buffer frame bottom plate, and an adjusting gasket is installed between its bottom and the frame bottom plate of the frame body. After the piston of the nitrogen spring is fully retracted into the inner cavity of the cylinder, its end is in contact with the buffer frame top plate.

4. The grouting pipe buffer device according to claim 1, characterized in that: The lifting frame upright plates of the lifting frame are two parallel arched plates, and the upper and lower ends thereof are respectively welded to the lifting frame top plate and the lifting frame bottom plate; a semicircular hole is arranged on one side of the lifting frame top plate.

5. A high-pressure jet pile machine, characterized in that: A grouting pipe buffer device comprising any one of claims 1-4.

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