Water supply cutter bar for vertical plastic laying grooving machine

Abstract

The utility model discloses a water supply cutter bar for a vertical plastic paving grooving machine, which relates to the technical field of vertical plastic paving seepage prevention and comprises a tubular cutter bar, a cutter is fixedly arranged on the outer wall of the cutter bar along the axial direction of the cutter bar, a plurality of water spray nozzles are arranged on the outer wall of the cutter bar, and a plurality of sleeves are arranged in the cutter bar from inside to outside to form a plurality of water cavities which are not communicated with one another. Each water cavity is independently connected with a water inlet pipe, each water inlet pipe is provided with a flow regulating valve and a water supply pump, and the flow regulating valves are in signal connection with the controller. Each water cavity supplies water independently, the spraying water pressure of the water spraying nozzles at any position on the cutter bar can be adjusted according to the actual working condition, the grooving efficiency is improved, and the grooving collapse risk is reduced. The water spraying nozzles with the water flow directions facing the cutter on the two sides of the cutter can effectively remove soil attached to the cutter, the cutting effect of the cutter is guaranteed, the water spraying nozzles with the water flow directions facing the advancing direction of the cutter on the two sides of the cutter wash the soil, and the grooving efficiency is guaranteed.

Description

Technical Field:

[0001] The utility model relates to the technical field of vertical plastic-laying anti-seepage, in particular to a water supply cutter bar for a vertical plastic-laying grooving machine. Background Art:

[0002] For dams such as river embankments, reservoirs and cofferdams, due to the influence of geological conditions, dam construction quality and water conservancy conditions, the dam is prone to the risk of seepage deformation under the infiltration of high-level water for a long time, threatening the safety of the dam body. The vertical anti-seepage technology can cut off the leakage channel and effectively solve the problem of seepage damage of the dam body.

[0003] Traditional vertical anti-seepage technologies mainly include methods such as concrete anti-seepage walls, cement-soil mixing pile anti-seepage walls, high-pressure jet grouting anti-seepage walls, grab-sinking well clay well pile anti-seepage walls, cement grouting curtains, and clay filling walls. Traditional vertical anti-seepage technologies need to go through processes such as hole making, grooving, shaft protection, wall construction, and backfilling, and have the defects of more processes, high cost, and long construction period.

[0004] The vertical plastic-laying anti-seepage technology is to use a grooving machine to cut a groove with a certain width and depth, lay an anti-seepage membrane in the groove, and then backfill the groove with soil to form a vertical anti-seepage curtain. Compared with traditional anti-seepage walls, it has a lower cost and a shorter construction period and is formed at one time. The vertical plastic-laying anti-seepage technology is a commonly used anti-seepage technology at present.

[0005] The grooving machines used in the vertical plastic-laying anti-seepage technology mainly include four types: reciprocating grooving machines, chain grooving machines, rotary grooving machines, and swing grooving machines. Among them, the rotary grooving machine is the main one. The rotary grooving machine accesses high-pressure water flow from the top of the cutter bar, and the high-pressure water flow is sprayed and scoured on the soil through the evenly distributed water nozzles on the cutter bar. The soil is cut into a groove under the combined action of the high-pressure water flow and the rigid cutter.

[0006] The rotary grooving machine opens a water supply cavity inside the cutter bar for the water spray nozzles to spray high-pressure water flow. During operation, as the depth of the cutter bar sinking into the soil increases and the formation of mud at the bottom of the groove, the pressure at the bottom of the cutter bar increases, the water nozzle spraying is blocked, and at the same time, the scouring force of the upper water nozzle increases. As a result, the grooving speed of the lower part of the grooving machine is slow, affecting the construction efficiency; the scouring force of the upper high-pressure water flow increases and the scouring time prolongs, which is easy to cause scouring and collapse.

[0007] In the geological structure with relatively large soil viscosity, during the grooving process, the rigid cutter is prone to sticking soil, which seriously affects the cutting effect of the cutter and further affects the construction efficiency. Content of the Utility Model:

[0008] To solve the above technical problems, the utility model provides a water supply cutter bar for a vertical plastic-laying grooving machine.

[0009] The technical solution adopted by the present utility model to solve its technical problems is as follows: A water supply cutter bar for a vertical plastic laying grooving machine, including a tubular cutter bar, on the outer wall of the cutter bar, a cutter is fixedly arranged along the axial direction of the cutter bar. It is characterized in that a plurality of water spray nozzles are arranged on the outer wall of the cutter bar, and the plurality of water spray nozzles communicate with the inside of the cutter bar. The plurality of water spray nozzles are evenly distributed in two columns along the axial direction of the cutter bar on each side of the cutter;

[0010] A plurality of sleeves are arranged in the cutter bar from inside to outside. The distances between the bottoms of the plurality of sleeves from inside to outside and the bottom of the cutter bar increase in sequence. Both ends of each sleeve are hermetically connected to the inner wall of the cutter bar. A water cavity is formed between the inner wall of the cutter bar and the outer wall of each sleeve, and a water cavity is formed at the lower part of the inner wall of the cutter bar. Each water cavity is not communicated with each other;

[0011] Water inlet pipes respectively connected to each water cavity are arranged on the cutter bar. A flow regulating valve and a water supply pump are arranged on each water inlet pipe. Each flow regulating valve is in signal connection with a controller.

[0012] Further, the water flow direction of one column of the water spray nozzles on each side of the cutter is towards the cutter, and the water flow direction of the other column of the water spray nozzles on each side of the cutter is towards the advancing direction of the cutter.

[0013] The beneficial effects of the present utility model are as follows: Each water cavity of the present utility model supplies water separately, and the injection water pressure of the water spray nozzles at any part of the cutter bar can be adjusted according to the actual working conditions, improving the grooving efficiency and reducing the risk of slot collapse; The water spray nozzles with the water flow direction towards the cutter on both sides of the cutter can effectively remove the soil adhered to the cutter, ensuring the cutting effect of the cutter. The water spray nozzles with the water flow direction towards the advancing direction of the cutter on both sides of the cutter scour the soil body, ensuring the grooving efficiency. Description of the drawings:

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0015] Figure 1 It is a structural schematic diagram of the present utility model.

[0016] Figure 2 It is a sectional view of two columns of water spray nozzles with the water flow direction towards the cutter of the present utility model.

[0017] Figure 3 It is a sectional view of two columns of water spray nozzles with the water flow direction towards the advancing direction of the cutter of the present utility model.

[0018] In the figure: tool shank 1, cutting tool 2, water spray nozzle 3, sleeve 4, water chamber 5, water inlet pipe 6, flow regulating valve 7, water supply pump 8, controller 9. Specific implementation manner:

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] Combined with Figures 1-3 As shown, the present invention is a water supply tool shank for a vertical plastic-laying grooving machine, including a tubular tool shank 1. A cutting tool 2 is fixedly arranged on the outer wall of the tool shank 1 along the axial direction of the tool shank 1. A plurality of water spray nozzles 3 are arranged on the outer wall of the tool shank 1. The plurality of water spray nozzles 3 communicate with the inside of the tool shank 1. The plurality of water spray nozzles 3 are evenly distributed in two columns along the axial direction of the tool shank 1 on each side of the cutting tool 2. The water flow direction of one column of water spray nozzles 3 faces the cutting tool 2, which can effectively remove the soil adhered to the cutting tool 2. The water flow direction of the other column of water spray nozzles 3 faces the advancing direction of the cutting tool 2, which can ensure the scouring of the soil body by the high-pressure water flow;

[0021] Two sleeves 4 are arranged inside the tool shank 1 from the inside to the outside. The distance between the bottom of the inner sleeve 4 and the bottom of the tool shank is shorter than the distance between the bottom of the outer sleeve 4 and the bottom of the tool shank. Both ends of each sleeve 4 are hermetically connected to the inner wall of the tool shank 1. A water chamber 5 is formed between the inner wall of the tool shank 1 and the outer wall of each sleeve 4. A water chamber 5 is formed at the lower part of the inner wall of the tool shank 1. The three water chambers 5 are not communicated with each other, and the injection water pressure of the water spray nozzles 3 communicated with each water chamber 5 on the tool shank 1 can be adjusted;

[0022] Water inlet pipes 6 are arranged on the tool shank 1 and are separately connected to each water chamber 5. A flow regulating valve 7 and a water supply pump 8 are arranged on each water inlet pipe 6. Each flow regulating valve 7 is signal-connected to the controller 9, and the flow rate and pressure of the water inlet of each water chamber 5 can be adjusted separately.

[0023] Working principle:

[0024] During construction, flow regulating valves 7 of three water inlets 6 are respectively set according to the actual formation conditions. For example, in a homogeneous formation, generally, the pressure of the lowest water chamber 5 is the highest, the middle one is the second highest, and the upper one is the lowest, so that the grooving efficiency of the cutter bar 1 is the same up and down, reducing the risk of collapse. When the grooving is blocked or the efficiency decreases, the pressure of the water chamber 5 at the blocked part can be adjusted to restore the grooving efficiency. At the same time, through the water spray nozzles 3 with the water flow directions on both sides of the cutter 2 facing the cutter, the soil adhered to the cutter 2 is removed, and through the water spray nozzles 3 with the water flow directions on both sides of the cutter 2 facing the advancing direction of the cutter 2, the soil body is scoured to ensure uniform grooving speed and beautiful grooving.

[0025] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A water supply knife bar for a vertical plastic laying slotting machine, comprising a tubular knife bar, on the outer wall of which a knife is fixedly provided along the axial direction of the knife bar, characterized in that: A plurality of water spray nozzles are provided on the outer wall of the knife rod, the plurality of water spray nozzles are connected to the interior of the knife rod, and the plurality of water spray nozzles are evenly distributed in two rows along the axial direction of the knife rod on each side of the tool; A plurality of sleeves are arranged inside the knife bar from the inside to the outside, and the distances between the bottoms of the plurality of sleeves and the bottom of the knife bar increase successively from the inside to the outside, and both ends of each sleeve are sealedly connected to the inner wall of the knife bar, and the inner wall of the knife bar and the outer wall of each sleeve form a water cavity, and a water cavity is formed at the lower part of the inner wall of the knife bar, and each water cavity is not connected to each other; A water inlet pipe which is separately connected to each of the water chambers is arranged on the knife rod, a flow regulating valve and a water supply pump are arranged on each of the water inlet pipes, and each of the flow regulating valves is connected to a controller signal.

2. The water supply knife bar for a vertical plastic laying slotting machine according to claim 1, characterized in that: The water flow direction of one row of the water jet nozzles on each side of the tool is toward the tool, and the water flow direction of the other row of the water jet nozzles on each side of the tool is toward the moving direction of the tool.

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