A smoothing device and engineering machinery

Abstract

This utility model discloses a smoothing device and engineering machinery, comprising: a main frame for connecting to a main unit; a height adjustment unit mounted on the main frame for adjusting the height of the smoothing board; and a pitch angle adjustment unit connected to the height adjustment unit for changing the pitch angle of the smoothing board. This utility model enables the smoothing device of a small paver to have height and pitch angle adjustment capabilities, and is easier to control.

Description

Technical Field

[0001] This utility model belongs to the field of engineering machinery technology, specifically relating to a smoothing device and engineering machinery. Background Technology

[0002] In the process of concrete pavement paving, the cement concrete surface needs to be smoothed. The quality of the smoothing work is one of the key factors determining the paving quality and performance of the road surface. Traditional concrete smoothing devices have a relatively simple structure, and most of them require manual operation, which is slow and the smoothing effect is not ideal. With the development of the economy and the advancement of science and technology, the emergence of automated pavers has made road paving and smoothing more convenient. Large pavers have shown problems such as inflexibility, time-consuming and labor-intensive construction, and high construction costs when working on narrow roads such as residential areas and parks. The application of small pavers has solved these problems better. However, currently, small pavers cannot directly adjust the pitch angle of the smoothing plate, and cannot smoothly change the paving thickness during paving and smoothing, resulting in uneven paving thickness when paving some narrow and sloping roads. In order to provide the small paver smoothing device with height and pitch angle adjustment capabilities and make the device easier to control, a concrete smoothing device is designed. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a smoothing device and engineering machinery, enabling the smoothing device of a small paver to have adjustable height and pitch angle, and making it easier to control.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: In a first aspect, a smoothing device is provided, comprising: a main frame for connecting to a main unit; a height adjustment unit mounted on the main frame for adjusting the height of the smoothing board; and a pitch angle adjustment unit connected to the height adjustment unit for changing the pitch angle of the smoothing board.

[0005] Furthermore, the height adjustment unit includes a power mechanism mounted on the main frame and a lifting mechanism driven by the power mechanism.

[0006] Furthermore, the power mechanism includes a servo motor, which is mounted on a motor mounting bracket, and the motor mounting bracket is connected to a motor bracket connecting plate on the main frame.

[0007] Furthermore, the lifting mechanism is a lead screw drive mechanism, which includes: a lead screw that is driven and connected to the output end of the servo motor, the lead screw being connected to the main frame through a lead screw fixing seat and a lead screw support seat respectively; a nut that is driven and connected to the lead screw; and a smoothing plate connecting mechanism that is connected to the nut.

[0008] Furthermore, the trowel plate connecting mechanism includes a trowel plate connecting bracket for connecting a nut and a trowel plate connecting hinge support for hinged connection with the trowel plate; the trowel plate connecting bracket includes a connecting column, one end of which is connected to the nut via a screw nut connecting plate, and the other end is connected to the trowel plate connecting hinge support via a connecting flange.

[0009] Furthermore, the pitch angle adjustment unit includes: a mounting plate connected to the height adjustment unit; a pitch adjustment cylinder connecting frame connected to the mounting plate; one end of the pitch adjustment cylinder is hinged to the pitch adjustment cylinder connecting frame, and the other end is hinged to the trowel plate.

[0010] Furthermore, the pitch adjustment cylinder includes a pitch adjustment cylinder one and a pitch adjustment cylinder two; the hinge points of the pitch adjustment cylinder one, the pitch adjustment cylinder two, and the smearing plate connecting mechanism on the smearing plate are the three vertices of a triangle.

[0011] Furthermore, the mounting plate includes a top mounting plate and a set of side mounting plates, with the top mounting plate and a set of side mounting plates forming a U-shaped mounting groove.

[0012] Furthermore, the pitch adjustment cylinder connecting frame includes a C-shaped connecting frame connected to the mounting plate and a V-shaped connecting frame connected to the C-shaped connecting frame, with one end of the pitch adjustment cylinder hinged to the V-shaped connecting frame.

[0013] In a second aspect, an engineering machine is provided, which is equipped with the leveling device described in the first aspect.

[0014] Compared with the prior art, the beneficial effects achieved by this utility model are as follows: (1) By setting up a main frame for connecting to the main machine, a height adjustment unit for adjusting the height of the screed plate, and a pitch angle adjustment unit for changing the pitch angle of the screed plate, the screed device of the small paver has the ability to adjust the height and pitch angle, and is easier to control. (2) By setting up an integrated main frame, height adjustment unit and pitch angle adjustment unit, the installation of the whole device is more convenient. During the movement of the machine, the height of the trowel and the pitch angle can be adjusted together, which enhances the adaptability to road slopes. (3) By setting the hinge points of the pitch adjustment cylinder one, the pitch adjustment cylinder two and the smearing plate connection mechanism on the smearing plate as the three vertices of a triangle, the present invention adopts the three-point support principle, which can keep the smearing plate stable during the adjustment process and ensure the smoothness of the road surface during the smearing process. Attached Figure Description

[0015] Figure 1This is a schematic diagram of the overall structure of a smoothing device provided in an embodiment of the present utility model; Figure 2 This is a schematic diagram of the main frame structure in an embodiment of this utility model; Figure 3 This is a schematic diagram of the structure of the motor mounting bracket in an embodiment of this utility model; Figure 4 This is a schematic diagram of the structure of the mounting boss of the lead screw fixing seat in an embodiment of this utility model; Figure 5 This is a schematic diagram of the structure of the lead screw support mounting bracket in this utility model embodiment; Figure 6 This is a schematic diagram of the planar structure of the height adjustment unit in an embodiment of this utility model; Figure 7 yes Figure 6 View from direction A; Figure 8 This is a schematic diagram of the structure of the flat plate connecting bracket in an embodiment of this utility model; Figure 9 This is a schematic diagram showing the connection state between the pitch angle adjustment unit and the smearing plate in an embodiment of this utility model; Figure 10 This is a schematic diagram of the mounting plate in an embodiment of this utility model; Figure 11 This is a schematic diagram of the structure of the pitch adjustment cylinder connecting frame in an embodiment of this utility model; Figure 12 This is a schematic diagram of the structure of the cylinder fixing support in the embodiment of this utility model; Figure 13 This is a schematic diagram of the structure of the squeegee in an embodiment of this utility model; In the diagram: 1. Main frame; 101. Device connecting plate; 102. Motor bracket connecting plate; 103. Mounting boss connecting plate; 104. Support bracket mounting plate; 2. Motor mounting bracket; 201. Motor mounting hole; 202. Reinforcing rib one; 3. Lead screw fixing seat mounting boss; 301. Lead screw fixing seat mounting hole; 4. Lead screw support seat mounting bracket; 401. Lead screw support seat mounting hole; 402. Reinforcing rib two; 5. Lead screw transmission mechanism; 501. Servo motor; 502. Coupling; 503. Lead screw; 504. Nut; 505. Lead screw fixing seat; 506. Lead screw support seat; 6. Smoothing plate connecting mechanism; 601. Smoothing plate connecting bracket; 6011. 6012. Connecting plate; 6013. Connecting flange; 602. Smoothing plate connecting hinge support; 7. Pitch angle adjustment unit; 701. Mounting plate; 7011. Top mounting plate; 7012. Side mounting plate; 702. Pitch adjustment cylinder connecting bracket one; 703. Pitch adjustment cylinder connecting bracket two; 704. Pitch adjustment cylinder mounting seat one; 705. Pitch adjustment cylinder mounting seat two; 706. Pitch adjustment cylinder one; 707. Pitch adjustment cylinder two; 8. Smoothing plate; 801. Smoothing plate bottom plate; 802. Smoothing plate fixing support; 803. Cylinder fixing support one; 804. Cylinder fixing support two; 9. C-type connecting bracket; 10. V-type connecting bracket. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0017] Example 1 like Figures 1-13 As shown, a cement concrete smoothing device includes: a main frame 1 for connecting to a main unit; a height adjustment unit mounted on the main frame 1 for adjusting the height of a smoothing board 8; and a pitch angle adjustment unit 7 connected to the height adjustment unit for changing the pitch angle of the smoothing board 8. This invention can be applied to smoothing cement concrete, and also to smoothing other materials similar to cement concrete.

[0018] like Figures 1-7As shown, the main frame 1 includes a device connecting plate 101, a motor bracket connecting plate 102, a mounting boss connecting plate 103, and a support bracket mounting plate 104. The main frame 1 is connected to the traveling main unit via the device connecting plate 101. The motor mounting bracket 2 is bolted to the motor bracket connecting plate 102. The motor mounting bracket 2 has a motor mounting hole 201 and a reinforcing rib 202. The servo motor 501 is mounted on the motor mounting bracket 2 through the motor mounting hole 201. The lead screw fixing seat mounting boss 3 is bolted to the mounting boss connecting plate 103. The lead screw fixing seat mounting boss 3 has a lead screw fixing seat mounting hole 301. The lead screw fixing seat 505 is mounted on the lead screw fixing seat mounting boss 3. The lead screw support 506 is mounted on the lead screw support mounting bracket 4. The lead screw support mounting bracket 4 is connected to the support bracket mounting plate 104 by bolts. The lead screw support mounting bracket 4 is provided with a lead screw support mounting hole 401 and a reinforcing rib 402. The lead screw support 506 is mounted on the lead screw support mounting bracket 4 through the lead screw support mounting hole 401.

[0019] The height adjustment unit includes a power mechanism mounted on the main frame 1 and a lifting mechanism driven by the power mechanism. The power mechanism includes a servo motor 501, which is mounted on a motor mounting bracket 2. The motor mounting bracket 2 is connected to a motor bracket connecting plate 102 on the main frame 1. The lifting mechanism is a lead screw transmission mechanism 5, which is mounted on the main frame 1 via the motor mounting bracket 2, a lead screw fixing seat mounting boss 3, and a lead screw support seat mounting bracket 4. The lead screw transmission mechanism 5 includes: a lead screw 503 that is driven to the output end of the servo motor 501 via a coupling 502; a nut 504 that is driven to the lead screw 503 (the rotation of the lead screw 503 can drive the nut 504 to move up and down; in addition, the setting of reinforcing rib 1 202 and reinforcing rib 2 402 enhances the stability of the transmission mechanism); and a smoothing plate connecting mechanism 6 that is connected to the nut 504. The lead screw 503 is connected to the main frame 1 via a lead screw fixing seat 505 and a lead screw support seat 506. The trowel plate connecting mechanism 6 includes a trowel plate connecting bracket 601 for connecting the nut 504 and a trowel plate connecting hinge support 602 for hinged connection with the trowel plate 8. The trowel plate connecting bracket 601 includes a connecting column 6012, one end of which is connected to the nut 504 via a lead screw nut connecting plate 6011 (the bottom of the lead screw nut connecting plate 6011 is fixedly connected to the top of the nut 504), and the other end is connected to the trowel plate connecting hinge support 602 via a connecting flange 6013 (the top of the trowel plate connecting hinge support 602 is fixedly connected to the bottom of the connecting flange 6013 by bolts).

[0020] By designing an integrated main frame, height adjustment unit, and pitch angle adjustment unit, the height and pitch angle of the trowel can be adjusted simultaneously during the movement of the main unit, enhancing its adaptability to road slopes. Integrating the device connection plate, motor bracket connection plate, mounting boss connection plate, and support bracket mounting plate onto the main frame makes device installation more convenient.

[0021] By setting reinforcing rib one and reinforcing rib two, the load-bearing capacity of the motor mounting bracket and the lead screw support bracket is increased, providing support for the servo motor and the lead screw support, and making the overall structure more stable.

[0022] The squeegee plate connecting mechanism 6 is mounted on the screw drive mechanism 5. The pitch angle adjustment unit 7 is symmetrically mounted on the left and right sides of the squeegee plate connecting mechanism 6. The squeegee plate 8 is mounted on the squeegee plate connecting mechanism 6 and the pitch angle adjustment unit 7 via hinges. The height and pitch angle of the squeegee plate 8 are adjusted by controlling the motor and the pitch adjustment cylinder.

[0023] By designing the lead screw and nut connecting plate, connecting column, and connecting flange, power transmission between the lead screw drive mechanism and the trowel plate can be achieved, ensuring the stability of the trowel plate height adjustment. Furthermore, the design of the lead screw and nut connecting plate allows for the connection of the pitch angle adjustment unit, making it easier to install the pitch angle adjustment unit on the trowel plate connecting mechanism.

[0024] By designing the screw drive mechanism, two sets of screw and nut pairs are arranged in parallel, providing height adjustment while ensuring that the screed plate is parallel to the paved road surface after adjustment. This improves the accuracy of height adjustment.

[0025] The pitch angle adjustment unit 7 includes: a mounting plate 701 connected to the height adjustment unit, and a pitch adjustment cylinder connecting frame connected to the mounting plate 701; one end of the pitch adjustment cylinder is hinged to the pitch adjustment cylinder connecting frame, and the other end is hinged to the squeegee plate 8. The pitch adjustment cylinder includes a first pitch adjustment cylinder 706 and a second pitch adjustment cylinder 707; the hinge points of the first pitch adjustment cylinder 706, the second pitch adjustment cylinder 707, and the squeegee plate connecting mechanism 6 on the squeegee plate 8 are the three vertices of a triangle.

[0026] By designing the screed board fixing support, hydraulic cylinder fixing support one, and hydraulic cylinder fixing support two, and adopting the three-point support principle, the screed board can remain stable during adjustment, ensuring the smoothness of the road surface during the screing process.

[0027] Mounting plate 701 includes a top mounting plate 7011 and a set of side mounting plates 7012. The top mounting plate 7011 and a set of side mounting plates 7012 form a U-shaped mounting groove. The bottom surface of the top mounting plate 7011 is bolted to the top of the lead screw nut connecting plate 6011. The inner surface of the side mounting plate 7012 is flush with the side of the lead screw nut connecting plate 6011. Pitch adjustment cylinder connecting frame one 702 and pitch adjustment cylinder connecting frame two 703 are respectively provided with a C-shaped connecting frame 9 and a V-shaped connecting frame 10. The front and rear outer surfaces of the C-shaped connecting frame 9 are flush with the two ends of the inner surface of the side mounting plate 7012. Pitch adjustment cylinder connecting frame one 702 and pitch adjustment cylinder connecting frame two 703 are connected to each other. The pitch adjustment cylinder mounting base 1 704 and the pitch adjustment cylinder mounting base 2 705 are symmetrically mounted on the V-shaped connecting frame 10 at both ends of the inner surface of the side mounting plate 7012 of the mounting plate 701. The bottom surfaces of the pitch adjustment cylinder mounting base 1 704 and the pitch adjustment cylinder mounting base 2 705 are in contact with the bottom surface of the V-shaped connecting frame 10. The pitch adjustment cylinder mounting base 1 704 and the pitch adjustment cylinder mounting base 2 705 are respectively connected to the cylinder body of the pitch adjustment cylinder 1 706 and the pitch adjustment cylinder 2 707 through hinges.

[0028] By designing the mounting plate, pitch adjustment cylinder connecting bracket one, pitch adjustment cylinder connecting bracket two, pitch adjustment cylinder mounting seat one, pitch adjustment cylinder mounting seat two, pitch adjustment cylinder one, and pitch adjustment cylinder two, the pitch angle adjustment unit is connected to the screed board connecting mechanism and the screed board, enabling simultaneous adjustment of the screed board height and pitch angle. Furthermore, pitch adjustment cylinder one and pitch adjustment cylinder two are symmetrically installed at both ends of the screed board, ensuring that the screed board remains parallel during pitch adjustment, improving road surface smoothness.

[0029] By designing the C-type and V-type connecting frames, the structure can be made more stable, the load-bearing capacity of the pitch adjustment cylinder connecting frame one and the pitch adjustment cylinder connecting frame two can be improved, and the overall structure of the pitch angle adjustment unit can be made more stable.

[0030] The screed plate 8 includes a screed base plate 801, a screed plate fixing support 802, a hydraulic cylinder fixing support one 803, and a hydraulic cylinder fixing support two 804. The screed plate fixing support 802 is connected to the screed plate connecting hinge support 602 via a hinge. The hydraulic cylinder fixing support one 803 and the hydraulic cylinder fixing support two 804 are respectively connected to the piston assemblies of the pitch adjustment cylinder one 706 and the pitch adjustment cylinder two 707 via hinges.

[0031] In use, this invention controls the synchronous rotation of two servo motors 501. The coupling 502 converts the rotational motion of the servo motors 501 into the rotational motion of the lead screw 503, which in turn converts the rotational motion of the lead screw 503 into the linear motion of the nut 504. This linear motion is then converted into the linear motion of the squeegee plate 8 via the squeegee plate connecting mechanism 6, thus achieving height adjustment of the squeegee plate 8. Pitch adjustment cylinder 1 706 and pitch adjustment cylinder 2 707 are symmetrically mounted on cylinder fixing supports 1 803 and 2 804 at both ends of the squeegee plate 8, making the adjustment process of the squeegee plate 8 smoother. By simultaneously controlling pitch adjustment cylinder 1 706 and pitch adjustment cylinder 2 707, the linear motion of the cylinders is converted into the rotational motion of the squeegee plate 8 around the fulcrum, thereby achieving pitch angle adjustment of the squeegee plate 8.

[0032] The squeegee plate connecting mechanism 6 and the pitch angle adjustment unit 7 are fixedly connected. During the height adjustment process, the relative height between the pitch angle adjustment unit 7 and the squeegee plate 8 remains unchanged. By simultaneously controlling two symmetrically arranged servo motors 501 and pitch adjustment cylinders 706 and 707, the height and pitch angle of the squeegee plate 8 can be adjusted simultaneously.

[0033] Example 2 Based on the cement concrete smoothing device described in Embodiment 1, this embodiment provides an engineering machine equipped with the cement concrete smoothing device described in Embodiment 1.

[0034] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A trowelling device, characterised in that, include: A main rack (1) for connecting to the host. A height adjustment unit installed on the main frame (1) for adjusting the height of the trowel plate (8); A pitch angle adjustment unit (7) connected to the height adjustment unit is used to change the pitch angle of the trowel plate (8). The height adjustment unit includes a power mechanism installed on the main frame (1) and a lifting mechanism driven by the power mechanism; The power mechanism includes a servo motor (501), which is mounted on a motor mounting bracket (2). The motor mounting bracket (2) is connected to a motor bracket connecting plate (102) on the main frame (1). The lifting mechanism is a lead screw drive mechanism (5), which includes: A lead screw (503) is connected to the output end of the servo motor (501). The lead screw (503) is connected to the main frame (1) through a lead screw fixing seat (505) and a lead screw support seat (506). Nut (504) is connected to the lead screw (503) for transmission. A trowel plate connecting mechanism (6) connected to the nut (504); The trowel plate connecting mechanism (6) includes a trowel plate connecting bracket (601) for connecting the nut (504) and a trowel plate connecting hinge support (602) for hinged to the trowel plate (8). The trowel plate connecting bracket (601) includes a connecting column (6012), one end of which is connected to a nut (504) via a screw nut connecting plate (6011), and the other end is connected to the trowel plate connecting hinge support (602) via a connecting flange (6013); The pitch angle adjustment unit (7) includes: Mounting plate (701) connected to the height adjustment unit; A pitch adjustment cylinder connecting bracket connected to the mounting plate (701); One end of the pitch adjustment cylinder is hinged to the pitch adjustment cylinder connecting frame, and the other end is hinged to the trowel plate (8); The pitch adjustment cylinder includes pitch adjustment cylinder one (706) and pitch adjustment cylinder two (707); the hinge points of pitch adjustment cylinder one (706), pitch adjustment cylinder two (707) and the smearing plate connecting mechanism (6) on the smearing plate (8) are the three vertices of a triangle.

2. A screeding device according to claim 1, characterised in that The mounting plate (701) includes a top mounting plate (7011) and a side mounting plate (7012), and the top mounting plate (7011) and a set of side mounting plates (7012) form a U-shaped mounting groove.

3. The smoothing device according to claim 1, characterized in that, The pitch adjustment cylinder connecting frame includes a C-shaped connecting frame connected to the mounting plate (701) and a V-shaped connecting frame connected to the C-shaped connecting frame, with one end of the pitch adjustment cylinder hinged to the V-shaped connecting frame.

4. An engineering machinery, characterized in that, The engineering machinery is equipped with a smoothing device as described in any one of claims 1 to 3.

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