Leveling machine with hydraulic adjustment function

Abstract

This utility model relates to the field of screed technology, and more particularly to a screed with hydraulic adjustment function. It includes a support frame, a hydraulic cylinder mounted on the top of the support frame, a handle fixedly connected to one end of the support frame, an adjustment frame installed inside the support frame, a pressing roller installed inside the adjustment frame, a scraper assembly installed at one bottom end of the support frame, first limiting blocks fixedly connected to the outer walls of both sides of the adjustment frame, with locking bolts penetrating the interior of the first limiting blocks, and second limiting blocks fixedly connected to the outer walls of both ends of the adjustment frame. This device can configure the screed's two sets of hydraulic cylinders to be driven by a single hydraulic cylinder, using the two sets of limiting blocks and limiting grooves to hydraulically adjust the lifting and lowering of the pressing roller. This avoids the jamming of the pressing roller that would occur when both sets of hydraulic cylinders are driven simultaneously, facilitating the lifting and lowering operation of the pressing roller, and thus facilitating the hydraulic adjustment of the screed.

Description

Technical Field

[0001] This utility model relates to the field of leveling machine technology, specifically to a leveling machine with hydraulic adjustment function. Background Technology

[0002] Road construction refers to the process of maintaining, renovating, or repairing roads. The main steps include planning and design, road clearing, road breaking and removal, base treatment, road paving, slope construction, installation of curbs and markings, and cleaning and completion. During construction, it is essential to strictly adhere to relevant technical specifications and operating procedures to ensure construction quality and safety. Road screeds are a common type of road screeding equipment. When the road subgrade is thick, the height difference of the screed's advance is significant, and its upper support structure may come into contact with the uncompacted ground. Therefore, a hydraulic adjustment mechanism is usually installed in the screed to adjust the height of its internal compaction rollers.

[0003] Chinese utility model patent CN219604093U discloses an adjustable road screed, which includes "a first sluice groove opened in the middle of both sides of the inner wall of the support frame, a first limiting groove opened on both sides of the inner wall of the two first sluice grooves, a support block slidably provided on the inner wall of the two first sluice grooves, and the outer walls of the two support blocks respectively engaging with the inner walls of the four first limiting grooves, and a hydraulic rod engaging at the upper end of the inner wall of the two first sluice grooves"; however, the method of setting two hydraulic rods inside the screed to drive the two ends of the roller to adjust the height simultaneously can cause jamming in actual use due to the different switching timing or power of the two hydraulic rods, making it difficult for the roller to be raised and lowered, and thus not being able to effectively adjust the hydraulic leveling machine. Utility Model Content

[0004] The purpose of this utility model is to provide a leveling machine with hydraulic adjustment function, so as to solve the problem mentioned in the background art that the leveling machine with two hydraulic rods inside simultaneously driving the rolling roller for height adjustment will cause jamming due to the different switching timing or power of the two hydraulic rods in actual use, making it inconvenient for the rolling roller to be raised and lowered, and failing to effectively adjust the hydraulic leveling machine.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a leveling machine with hydraulic adjustment function, comprising a support frame, a hydraulic cylinder installed on the top of the support frame, a handle fixedly connected to one end of the support frame, an adjustment frame installed inside the support frame, a rolling roller installed inside the adjustment frame, and a scraping assembly installed at one bottom end of the support frame.

[0006] The two outer walls of the adjustment frame are fixedly connected to a first limiting block, and a locking bolt passes through the inside of the first limiting block. The two outer walls of the adjustment frame are fixedly connected to a second limiting block.

[0007] The scraping assembly includes a fixing seat, which is respectively installed on both sides of the bottom end of the support frame. The fixing seat is rotatably connected to a fixing frame. The outer walls of both ends of the fixing frame are fixedly connected to fixing screws. The fixing screws are threaded with fixing nuts. The bottom center of the fixing frame is fixedly connected to a scraper.

[0008] The beneficial effects of this utility model are as follows: by setting the driving mode of the two sets of hydraulic cylinders in the leveling machine to a single hydraulic cylinder drive, and cooperating with two sets of limit blocks and limit grooves to hydraulically adjust the lifting and lowering of the roller, the roller jamming caused by the simultaneous driving of the two sets of hydraulic cylinders is avoided, making it easier to lift and lower the roller, and thus making it easier to hydraulically adjust the leveling machine.

[0009] Limit the lifting and lowering of the adjustment frame within the support frame:

[0010] The support frame is further configured such that: the bottom of the support frame is a hollow rectangular frame, and the top of the support frame is formed by two U-shaped frames with downward openings, the top centers of which are perpendicularly spliced ​​together, and a hydraulic cylinder is installed at the top of the splice. At the same time, the connection between the bottom and the top of the support frame is respectively provided by a first limiting groove and a second limiting groove. The outer wall of the adjustment frame and the inner wall of the bottom of the support frame form a sliding connection structure, and the first limiting block and the second limiting block are respectively slidably connected inside the first limiting groove and the second limiting groove.

[0011] By adopting the above technical solution, a sliding adjustment frame is set in the support frame, which, together with two sets of limit blocks and limit grooves, limits the lifting distance of the roller in the adjustment frame, so as to avoid excessive lifting of the roller and improve the overall stability of the roller when it is lifted.

[0012] To enable the adjustment frame to rise and fall within the support frame:

[0013] The adjustment frame is further configured such that: the bottom of the adjustment frame is a hollow rectangular frame, and the top of the adjustment frame is a U-shaped frame structure with the opening facing downwards; the internal drive of the hydraulic cylinder is connected to a piston rod, and the top center of the adjustment frame is connected to the bottom of the piston rod; and the maximum hydraulic distance of the hydraulic cylinder is the same as the height of the first limiting groove and the second limiting groove.

[0014] By adopting the above technical solution, the top of the adjusting frame is connected to the piston rod inside the hydraulic cylinder. The hydraulic oil pump at the top of the support frame injects hydraulic oil into the hydraulic cylinder, driving the piston rod to rise and fall. This, in turn, causes the adjusting frame to rise and fall hydraulically within the support frame, facilitating the hydraulic adjustment of the rolling roller inside the adjusting frame and improving the stability of the rolling roller's rise and fall.

[0015] To enable the disassembly and replacement of the rolling mill rollers:

[0016] The design is further configured such that: there are a total of eight locking bolts, which are respectively inserted through the four corners of the two first limiting blocks; the two ends of the rolling roller are rotatably connected to docking seats; and the locking bolts form a threaded connection structure with the docking seats by passing through the two sides of the first limiting blocks and the adjusting frame.

[0017] By adopting the above technical solution, the rolling roller is installed in the adjustment frame by using locking bolts in conjunction with the limiting block and the mating seats at both ends of the rolling roller. The bolt connection method facilitates quick assembly and disassembly of the rolling roller, and makes it easy to replace the rolling roller in time when it is damaged.

[0018] To clean the debris adhering to the rolling roller:

[0019] Further configuration: the fixing frame is a U-shaped structure with the opening facing upward, and the fixing screws are respectively installed on the outer walls of the top two ends of the fixing frame. The fixing screws penetrate one side of the outer wall of the fixing seat, and the fixing nuts are connected to the fixing screws and the outer wall of the fixing seat by thread. The scraper is an arc-shaped structure, and the bottom of the scraper is in contact with the outer wall of the rolling roller.

[0020] By adopting the above technical solution, a rotatable fixing frame is set up with a fixing screw and a fixing nut to lock the rotation angle. This makes it easy to adjust the angle of the fixing frame according to the height of the roller, so that the scraper fits the roller better, improves the cleaning of debris adhering to the roller surface, and avoids affecting the use of the roller.

[0021] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0022] Figure 1 This is a front view structural diagram of the present invention;

[0023] Figure 2 This is a front view of the structure of this utility model when in use;

[0024] Figure 3 This is an enlarged front view of the support frame of this utility model;

[0025] Figure 4 This is an exploded enlarged structural diagram of the adjusting frame and the rolling roller of this utility model;

[0026] Figure 5 This is an exploded magnified structural diagram of the scraping assembly of this utility model.

[0027] In the diagram: 1. Support frame; 101. First limiting groove; 102. Second limiting groove; 2. Hydraulic cylinder; 201. Piston rod; 3. Pull handle; 4. Adjusting frame; 401. First limiting block; 402. Locking bolt; 403. Second limiting block; 5. Roller; 501. Connecting seat; 6. Scraper assembly; 601. Fixed seat; 602. Fixed frame; 603. Fixed screw; 604. Fixed nut; 605. Scraper. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way.

[0029] Please see Figures 1 to 5 A leveling machine with hydraulic adjustment function includes a support frame 1, a hydraulic cylinder 2 installed on the top of the support frame 1, a handle 3 fixedly connected to one end of the support frame 1, an adjustment frame 4 installed inside the support frame 1, a rolling roller 5 installed inside the adjustment frame 4, and a scraper assembly 6 installed at one bottom end of the support frame 1.

[0030] The two outer walls of the adjusting frame 4 are fixedly connected with first limiting blocks 401, and locking bolts 402 pass through the inside of the first limiting blocks 401. The two outer walls of the adjusting frame 4 are fixedly connected with second limiting blocks 403.

[0031] The scraping assembly 6 includes a fixing seat 601, which is installed on both sides of the bottom end of the support frame 1. The fixing seat 601 is rotatably connected to a fixing frame 602. The fixing screws 603 are fixedly connected to the outer walls of both ends of the fixing frame 602. The fixing screws 603 are threadedly connected to a fixing nut 604. The scraper 605 is fixedly connected to the bottom center of the fixing frame 602.

[0032] In this embodiment, as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the bottom of the support frame 1 is a hollow rectangular frame, and the top of the support frame 1 is formed by two U-shaped frames with their top centers facing downwards being spliced ​​perpendicularly to each other. A hydraulic cylinder 2 is installed at the top of the splice. At the same time, the connection between the bottom and the top of the support frame 1 is respectively through the first limiting groove 101 and the second limiting groove 102. The outer wall of the adjusting frame 4 and the inner wall of the bottom of the support frame 1 form a sliding connection structure. The first limiting block 401 and the second limiting block 403 are respectively slidably connected inside the first limiting groove 101 and the second limiting groove 102.

[0033] In this embodiment, as Figure 1 , Figure 2 and Figure 4 As shown, the bottom of the adjustment frame 4 is a hollow rectangular frame, and the top of the adjustment frame 4 is a U-shaped frame structure with the opening facing downwards. The internal drive of the hydraulic cylinder 2 is connected to the piston rod 201, and the top center of the adjustment frame 4 is connected to the bottom of the piston rod 201. The maximum hydraulic distance of the hydraulic cylinder 2 is the same as the height of the first limiting groove 101 and the second limiting groove 102.

[0034] In this embodiment, as Figure 2 and Figure 4 As shown, there are eight locking bolts 402 in total, which pass through the four corners of the two first limiting blocks 401 respectively. The two ends of the rolling roller 5 are rotatably connected to the docking seat 501, and the locking bolts 402 form a threaded connection structure with the docking seat 501 by passing through the first limiting block 401 and the two sides of the adjusting frame 4.

[0035] In this embodiment, as Figure 1 and Figure 5 As shown, the fixing frame 602 is a U-shaped structure with the opening facing upwards, and the fixing screws 603 are respectively installed on the outer walls of the top two ends of the fixing frame 602. The fixing screws 603 penetrate one side of the outer wall of the fixing seat 601, and the fixing nut 604 connects the fixing screws 603 and the outer wall of the fixing seat 601 through the thread. The scraper 605 is an arc-shaped structure, and the bottom of the scraper 605 is in contact with the outer wall of the rolling roller 5.

[0036] The working process of this hydraulically adjustable leveling machine is as follows:

[0037] First, place the rolling roller 5 in the adjusting frame 4 inside the support frame 1, and make the docking seats 501 at both ends of the rolling roller 5 fit into the corresponding positions at both ends of the inner wall of the adjusting frame 4.

[0038] Then, the locking bolt 402 is passed through the first limiting block 401 and the adjusting frame 4, so that one end of the locking bolt 402 is threadedly connected to the docking seat 501, and the installation of the rolling roller 5 is completed.

[0039] Next, hydraulic oil is injected into the hydraulic cylinder 2 (model: HSG63) by starting the external hydraulic oil pump, causing the piston rod 201 to extend, which in turn drives the adjusting frame 4 connected to the bottom of the piston rod 201 to rise and fall. With the first limiting block 401 and the second limiting block 403 on the outside of the adjusting frame 4 sliding in the first limiting groove 101 and the second limiting groove 102 in the support frame 1, the rise and fall of the adjusting frame 4 is limited. After the height adjustment is completed, the fixing nuts 604 on the fixing seats 601 on both sides of the bottom end of the support frame 1 are rotated to adjust the rotation angle of the fixing frame 602 in the fixing seat 601, so that the scraper 605 at the bottom of the fixing frame 602 is in contact with the outer wall of the rolling roller 5.

[0040] Finally, rotate the fixing nut 604 to lock the angle of the fixing frame 602, and pull the handle 3 to move the leveling machine as a whole, so as to level the road surface.

[0041] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0042] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0043] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The above examples are only for the purpose of helping to understand the method and core ideas of this utility model. The above description is only a preferred embodiment of this utility model. It should be noted that due to the limitations of textual expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or changes can be made without departing from the principles of this utility model, and the above technical features can also be combined in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without modification, should all be considered within the protection scope of this utility model.

Claims

1. A screed with hydraulic adjustment, comprising a support frame (1), characterized in that: A hydraulic cylinder (2) is installed on the top of the support frame (1), a handle (3) is fixedly connected to one end of the support frame (1), an adjustment frame (4) is installed inside the support frame (1), a rolling roller (5) is installed inside the adjustment frame (4), and a scraping assembly (6) is installed at one bottom end of the support frame (1). The two outer walls of the adjusting frame (4) are fixedly connected with a first limiting block (401), and a locking bolt (402) passes through the inside of the first limiting block (401). The two outer walls of the adjusting frame (4) are fixedly connected with a second limiting block (403). The scraping assembly (6) includes a fixing seat (601), and the fixing seat (601) is respectively installed on both sides of the bottom end of the support frame (1). The fixing seat (601) is rotatably connected to a fixing frame (602). The fixing frame (602) is fixedly connected to the outer walls of both ends of the fixing frame (602). The fixing screw (603) is threaded with a fixing nut (604). The scraper (605) is fixedly connected to the bottom center of the fixing frame (602).

2. The screed with hydraulic adjustment function as claimed in claim 1, wherein: The bottom of the support frame (1) is a hollow rectangular frame, and the top of the support frame (1) is formed by two U-shaped frames with downward openings, which are perpendicularly spliced ​​together at their top centers. A hydraulic cylinder (2) is installed at the top of the splice. At the same time, the connection between the bottom and the top of the support frame (1) is respectively connected by a first limiting groove (101) and a second limiting groove (102). The outer wall of the adjustment frame (4) and the inner wall of the bottom of the support frame (1) form a sliding connection structure. The first limiting block (401) and the second limiting block (403) are respectively slidably connected inside the first limiting groove (101) and the second limiting groove (102).

3. The screed with hydraulic adjustment function as claimed in claim 2, characterized in that: The bottom of the adjustment frame (4) is a hollow rectangular frame, and the top of the adjustment frame (4) is a U-shaped frame structure with the opening facing downwards. The internal drive of the hydraulic cylinder (2) is connected to the piston rod (201), and the top center of the adjustment frame (4) is connected to the bottom of the piston rod (201). The maximum hydraulic distance of the hydraulic cylinder (2) is the same as the height of the first limiting groove (101) and the second limiting groove (102).

4. The screed with hydraulic adjustment function as claimed in claim 1, wherein: There are eight locking bolts (402) in total, and they pass through the four corners of the two first limiting blocks (401). The two ends of the rolling roller (5) are rotatably connected to the docking seat (501), and the locking bolts (402) form a threaded connection structure with the docking seat (501) by passing through the first limiting block (401) and the two sides of the adjusting frame (4).

5. The screed with hydraulic adjustment function as claimed in claim 1, wherein: The fixing frame (602) is a U-shaped structure with the opening facing upwards, and the fixing screws (603) are respectively installed on the outer walls of the top two ends of the fixing frame (602). The fixing screws (603) penetrate one side of the outer wall of the fixing seat (601), and the fixing nut (604) is connected to the fixing screws (603) and fits against the outer wall of the fixing seat (601) through the thread. The scraper (605) is an arc-shaped structure, and the bottom of the scraper (605) fits against the outer wall of the rolling roller (5).

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