A water replenishing and smoothing mechanism for a sliding mode machine

Abstract

The utility model discloses a kind of slipform machine water replenishing trowelling mechanisms, including slipform machine, the tail of the slipform machine is dragged with trowelling plate by traction piece, main spraying assembly that the slipform machine is equipped with is sprayed to forward ground, counterweight water tank is equipped on the trowelling plate, vice spraying assembly is equipped on the counterweight water tank, the spraying plate between the tail of slipform machine and trowelling plate is included in the vice spraying assembly, the lower end of the spraying plate is equipped with multiple water outlets distributed along concrete paving direction, the slipform machine is equipped with the water replenishing piece being communicated with counterweight water tank, the water replenishing piece is the counterweight water tank to maintain its weight with water replenishing.The utility model can wet ground before paving, avoid concrete to form hidden crack due to lower layer water loss speed too fast, and can water replenish to the concrete of paving, improve trowelling effect.

Description

Technical Field

[0001] This utility model relates to the field of road construction technology, specifically to a slipform machine water replenishment and polishing mechanism. Background Technology

[0002] A slipform paver, also known as a slipform paver, is a specialized piece of equipment used for concrete pavement construction. It spreads concrete evenly on the road surface using a slipform method, followed by vibration, compaction, and shaping processes, thus achieving rapid and efficient concrete pavement construction.

[0003] Existing slipform machines typically have a trowel connected to the tail of the machine via a steel cable. The trowel is dragged to smooth the concrete after slipforming, utilizing its own weight for surface finishing. However, due to factors such as uneven ground or variations in concrete flowability, the trowel is prone to vertical fluctuations during dragging, resulting in wavy patterns on the smoothed surface. To suppress these fluctuations, the conventional practice is to place counterweights on the trowel to increase stability.

[0004] When constructing in arid regions or during hot seasons, the lack of water in the ground soil can cause the concrete laid on it to develop microcracks due to the rapid loss of water from the underlying layer. Furthermore, because the slipform machine moves slowly, the surface of the laid concrete will evaporate too quickly due to the high temperature before it is smoothed. By the time it is smoothed, the surface moisture content is often low, causing adhesive friction between the trowel and the concrete. This not only increases the resistance of the equipment but also reduces the surface gloss, resulting in poor smoothing effect. Utility Model Content

[0005] The purpose of this utility model is to provide a slipform machine water replenishment and polishing mechanism that can moisten the ground before paving, prevent the concrete from forming hidden cracks due to the rapid water loss of the lower layer, and replenish water to the paved concrete to improve the polishing effect.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a slipform machine water replenishment and sprucing mechanism, comprising a slipform machine, wherein a sprucing plate is dragged by a traction component at the tail of the slipform machine, a main spraying assembly is provided on the slipform machine to spray water onto the ground in front, a counterweight water tank is provided on the sprucing plate, and a secondary spraying assembly is provided on the counterweight water tank, wherein the secondary spraying assembly includes a spraying plate located between the tail of the slipform machine and the sprucing plate, and a plurality of water outlets distributed along the concrete paving direction are provided at the lower end of the spraying plate, and a water replenishment component is provided on the slipform machine to communicate with the counterweight water tank, the water replenishment component replenishing water to the counterweight water tank to maintain its weight.

[0007] A further improvement of this utility model is that the main spraying assembly includes a water storage container installed on the slipform machine, a water supply pipe connected to the water storage container via a first water pump, a spraying pipe installed along the concrete paving direction at the outlet end of the water supply pipe, and atomizing nozzles evenly spaced on the spraying pipe.

[0008] A further improvement of this utility model is that the water replenishment component includes a flexible hose connecting the bottom of the water storage container to the counterweight water tank, and the flexible hose is equipped with a solenoid valve and a first flow meter that is signal-connected to the solenoid valve.

[0009] A further improvement of this utility model is that the auxiliary spray assembly further includes a second water pump disposed on the counterweight water tank, the outlet end of the second water pump being connected to the inlet of the spray plate and having a second flow meter disposed thereon.

[0010] A further improvement of this utility model is that the spray plate is provided with a diversion cavity, the diversion cavity including a main channel that is connected to the water inlet, one end of which branches into several branch channels that are connected to the water outlets one by one, the length of each branch channel is equal and the sum of their cross-sectional areas is equal to the cross-sectional area of ​​the main channel.

[0011] A further improvement of this utility model is that the second water pump is a diaphragm pump.

[0012] A further improvement of this utility model is that the water storage container is located at the tail of the slipform machine and its lower end face is higher than the upper end face of the counterweight water tank.

[0013] The beneficial effects of this utility model are as follows:

[0014] This invention, by setting a main spray assembly, can wet the ground before paving, preventing the concrete from forming hidden cracks due to excessive water loss from the underlying layer. Furthermore, the spray plate located between the tail of the slipform machine and the trowel can replenish water to the paved concrete, improving the troweling effect.

[0015] Existing counterweights are mostly made of concrete or metal, resulting in high transportation and installation costs. This invention replaces traditional counterweights with counterweight water tanks, which are lightweight when unloaded, making them easy to transport, and can be used simply by filling them with water during construction. The counterweight water tank provides the required weight by storing water, suppressing vertical fluctuations of the trowel, and also serves as a water source for spraying; the water in the tank can be sprayed onto the concrete surface through a spray plate to replenish moisture.

[0016] In this invention, the water storage container is positioned high above the counterweight tank, and automatic water replenishment can be achieved by utilizing the difference in gravitational potential energy. Combined with a solenoid valve and flow meter, the amount of water replenished can be controlled, maintaining the counterweight within a certain range. This prevents the liquid level in the counterweight tank from continuously dropping due to water replenishment during concrete pouring, which would result in the weight becoming too light and unable to maintain the stability of the smoothing process.

[0017] In this invention, both the water tank and the spray pipe are supplied with water through a water storage container. A first water pump draws water from the water storage container to supply water to the spray pipe, which consumes a large amount of water. The first water pump with a large flow rate provides high-intensity water replenishment to the dry foundation, prioritizing the soil's water absorption needs. The second water pump with a small flow rate compensates only for the evaporation loss of the concrete surface, avoiding excessive wetting that could affect the molding strength. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a top view of the spray pipe structure of this utility model.

[0020] Figure 3 This is a top view cross-sectional structural diagram of the spray plate of this utility model.

[0021] In the diagram, 1-slipform machine, 2-traction component, 3-smoothing board, 4-counterweight water tank, 5-spray plate, 6-water outlet, 7-water storage container, 8-first water pump, 9-water supply pipe, 10-spray pipe, 11-atomizing nozzle, 12-hose, 13-second water pump, 14-main channel, 15-branch channel. Detailed Implementation

[0022] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0023] Example 1: Combination Figures 1-3 It is known that a slipform machine water replenishment and sprucing mechanism includes a slipform machine 1. The tail of the slipform machine 1 is dragged by a sprucing plate 3 via a traction component 2. The slipform machine 1 is equipped with a main spraying assembly that sprays water onto the ground in front. The sprucing plate 3 is equipped with a counterweight water tank 4. The counterweight water tank 4 is equipped with a secondary spraying assembly. The secondary spraying assembly includes a spraying plate 5 located between the tail of the slipform machine 1 and the sprucing plate 3. The lower end of the spraying plate 5 is equipped with multiple water outlets 6 distributed along the concrete paving direction. The slipform machine 1 is equipped with a water replenishment component that communicates with the counterweight water tank 4. The water replenishment component replenishes water to the counterweight water tank 4 to maintain its weight.

[0024] The main spraying assembly includes a water storage container 7 installed on the slipform machine 1. A water supply pipe 9 is connected to the water storage container 7 via a first water pump 8. The outlet end of the water supply pipe 9 is connected to a spraying pipe 10 arranged along the concrete paving direction. Atomizing nozzles 11 are evenly spaced on the spraying pipe 10.

[0025] In this invention, the slipform machine uses a traction component 2 to drag the trowel 3, which is a conventional structure in the prior art. For example, the trowel is connected to both sides of the main frame at the tail of the slipform machine 1 using connecting ears, connecting hooks, and steel ropes. The trowel includes a horizontal plate adapted to the width of the concrete to be laid. Preferably, the trowel also includes side plates disposed on both sides of the horizontal plate.

[0026] The water supply component includes a hose 12 that connects the bottom of the water storage container 7 to the counterweight water tank 4. The hose 12 is equipped with a solenoid valve and a first flow meter that is connected to the solenoid valve signal.

[0027] The auxiliary spraying assembly also includes a second water pump 13 mounted on the counterweight water tank 4. The outlet of the second water pump 13 is connected to the inlet of the spray plate 5 and is equipped with a second flow meter. The auxiliary spraying assembly also includes a controller, which receives signals from the first and second flow meters and controls the opening and closing of the solenoid valve. Optionally, the second water pump 13 is a diaphragm pump. The diaphragm pump performs periodic interval pumping to adapt to the slow travel speed of the slipform machine. When the slipform machine travels at low speed, the spray plate 5 is intermittently replenished with water to meet the need for small-volume, frequent water replenishment, avoiding excessive wetness of the concrete surface due to continuous pumping.

[0028] The second flow meter detects the water loss from the second water pump 13 when it pumps water from the counterweight water tank 4 to the spray plate 5. When the cumulative water loss reaches the lower limit of the preset threshold (e.g., ±10% of the total weight), the solenoid valve opens and gravity water is replenished by using the height difference between the water storage container 7 and the counterweight water tank 4. The first flow meter simultaneously measures the injected water volume. After the replenished water volume offsets the water loss, the solenoid valve is closed to ensure that the compaction pressure of the trowel 3 on the concrete is stable.

[0029] The spray plate 5 is equipped with a flow-dividing cavity to ensure consistent flow rates at each outlet 6. The flow-dividing cavity is a conventional type in the prior art capable of achieving uniform water flow from each outlet 6. Optionally, the flow-dividing cavity includes a main channel 14 connected to the inlet, one end of which branches into several branch channels 15 that communicate with each outlet 6. Each branch channel 15 has an equal length and its total cross-sectional area equals the cross-sectional area of ​​the main channel 14, ensuring consistent flow rates at each outlet 6.

[0030] The water storage container 7 is located at the tail of the slipform machine 1 and its lower end is higher than the upper end of the counterweight water tank 4.

[0031] The working principle of the slipform machine water replenishment and polishing mechanism provided by this utility model is as follows:

[0032] The main spraying component at the front end of the slipform machine 1 sprays atomized water onto the foundation to adjust the moisture content of the foundation. The auxiliary spraying component at the rear of the slipform machine replenishes water to the paved concrete to compensate for the evaporation loss of the concrete surface. The counterweight water tank 4 is replenished with water through the cooperation of the solenoid valve and the first flow meter to maintain its weight within a certain range and ensure the smoothing effect of the trowel 3.

[0033] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A slipform machine water replenishment and polishing mechanism, comprising a slipform machine (1), wherein the tail of the slipform machine (1) is driven by a polishing plate (3) via a traction member (2), characterized in that: The slipform machine (1) is equipped with a main spraying assembly that sprays water onto the ground in front. The trowel (3) is equipped with a counterweight water tank (4). The counterweight water tank (4) is equipped with a secondary spraying assembly. The secondary spraying assembly includes a spray plate (5) located between the tail of the slipform machine (1) and the trowel (3). The lower end of the spray plate (5) is equipped with multiple water outlets (6) distributed along the concrete paving direction. The slipform machine (1) is equipped with a water replenishment component that communicates with the counterweight water tank (4). The water replenishment component replenishes water to the counterweight water tank (4) to maintain its weight.

2. A slipform machine water replacement screeding mechanism according to claim 1, wherein: The main spraying assembly includes a water storage container (7) installed on the slipform machine (1). A water supply pipe (9) is connected to the water storage container (7) via a first water pump (8). The outlet end of the water supply pipe (9) is connected to a spraying pipe (10) installed along the concrete paving direction. Atomizing nozzles (11) are provided at equal intervals on the spraying pipe (10).

3. A slipform machine water replacement screeding mechanism according to claim 2, wherein: The water supply component includes a hose (12) that connects the bottom of the water storage container (7) to the counterweight water tank (4). The hose (12) is equipped with a solenoid valve and a first flow meter that is signal-connected to the solenoid valve.

4. The slipform machine water replacement and screeding mechanism of claim 1 or 3, wherein: The auxiliary spray assembly also includes a second water pump (13) installed on the counterweight water tank (4). The outlet of the second water pump (13) is connected to the inlet of the spray plate (5) and a second flow meter is installed on it.

5. The slipform machine water replacement screed mechanism of claim 1, wherein: The spray plate (5) is provided with a diversion cavity. The diversion cavity includes a main channel (14) connected to the water inlet, which branches at one end to form several branch channels (15) connected to the water outlet (6). Each branch channel (15) has the same length and the sum of its cross-sectional area is equal to the cross-sectional area of ​​the main channel (14).

6. A slipform machine water replacement screeding mechanism according to claim 4 wherein: The second water pump (13) is a diaphragm pump.

7. The slipform machine water replenishment and polishing mechanism according to claim 2, characterized in that: The water storage container (7) is located at the tail of the slipform machine (1) and its lower end face is higher than the upper end face of the counterweight water tank (4).

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