A protective plate compactor

Abstract

This invention discloses a protective plate compactor, relating to the application of plate compactors. It includes a connecting frame for connection to an excavator, a fixing frame at the bottom of the connecting frame, a compaction plate below the fixing frame, a support plate on top of the compaction plate, mounting feet on the top of the support plate, and multiple sets of rubber sleeves connecting the mounting feet to the compaction plate. A drive device is mounted on the top of the support plate and connected to the hydraulic system of the excavator. A first grid assembly is installed on the outside of the compaction plate, and a second grid is installed on the edge of the support plate. This invention, by using the first and second grid assemblies to cover the top of the compaction plate, utilizes a grid structure to reduce the spread of soil into the compaction plate, thus reducing contact between the rubber sleeves, oil lines, and contaminants, thereby improving the service life of the plate compactor. Simultaneously, the grid structure also ensures stable heat dissipation for the drive device.

Description

Technical Field

[0001] This invention relates to the field of plate compactor applications, specifically a plate compactor with protective effects. Background Technology

[0002] The excavator plate compactor is an attachment for excavators, also called a hydraulic plate compactor or excavator vibratory compactor. It can replace the excavator bucket and relies on the excavator's hydraulic power to compact the ground. It is mostly used for operations in foundation pits, roadbeds, slopes, backfilling, trenches, and other similar sites.

[0003] The excavator plate compactor mainly consists of a connecting frame (connected to the excavator's vibrating rod and pin shaft to fix the whole machine), a hydraulic drive (hydraulic motor, gear set, shaft, eccentric block), and a compaction base plate (the base plate directly contacts the ground, and rubber shock absorbers isolate vibration to prevent damage to the excavator body). In other words, the hydraulic drive is installed on top of the compaction base plate, and the compaction base plate and connecting frame are equipped with shock-absorbing rubber sleeves. The hydraulic drive generates excitation force to make the compaction plate vibrate, thereby achieving the compaction of the roadbed.

[0004] Plate compactors are mainly used to compact soft soil. When the vibrating plate comes into contact with soft soil, it causes the surface soil to vibrate and some gravel to fly. If the vibrated soil cannot be discharged in time by vibration, it will gradually move to the inside of the plate. Therefore, in actual use, a lot of sand and gravel often accumulates on the top of the plate. The sand and gravel mixed with dust come into close contact with components such as rubber sleeves and oil pipes, which will accelerate the aging of the rubber sleeves and oil lines. In the current technology, the protection of plate compactors is often achieved by installing grid frames or enclosures to reduce the soil from entering the inside of the plate. Grid frames have almost no impact on the heat dissipation of the hydraulic drive device, but soil can easily get stuck in the gaps between the grids and cannot be discharged in time. This not only makes cleaning troublesome later, but also increases the weight of the plate compactor during operation. Enclosure-type protective structures can effectively prevent soil from spreading into the plate compactor, but their heat dissipation effect is poor, and the sand and gravel that fly in from above cannot be actively discharged from the inside out. Summary of the Invention

[0005] Therefore, the purpose of this invention is to provide a plate compactor with protective effect to solve the technical problems mentioned in the background.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a plate compactor with protective effect, comprising a connecting frame connected to an excavator, a fixing frame at the bottom of the connecting frame, a compaction plate below the fixing frame, a bearing plate at the top of the compaction plate, mounting feet at the top of the bearing plate, and multiple sets of rubber sleeves connecting the mounting feet and the compaction plate; a driving device mounted on the top of the bearing plate, the driving device being connected to the hydraulic system of the excavator; and a first grid assembly mounted on the outside of the compaction plate, the first grid assembly including a return frame, the bottom of which is provided with... Multiple sets of first diagonal bars are provided, each set of first diagonal bars has a first vertical bar at its bottom, and each set of first vertical bars has a cutting block at its bottom. A second grid assembly is installed on the edge of the bearing plate. The second grid assembly includes a mounting plate, and multiple sets of second vertical bars are provided on the top of the mounting plate. Each set of second vertical bars has a barrier plate at its top, and each set of barrier plates has a second diagonal bar at its top. The first grid assembly and the second grid assembly are installed in an alternating manner, with the cutting block located outside the second vertical bar and the barrier plate located outside the first vertical bar. The sides of the multiple sets of barrier plates are widened.

[0007] By adopting the above technical solution, and by setting the first and second grid components to cover the top of the tamping plate, the grid structure installation can reduce the spread of soil clods into the tamping plate, that is, reduce the contact between the rubber sleeve, oil circuit and pollution source, thereby improving the service life of the plate compactor. At the same time, the grid structure can also ensure stable heat dissipation of the drive device. The first grid component is fixed to the connecting frame, while the second grid component vibrates vertically with the tamping plate. When soil clods move onto the tamping plate, they are first blocked by the rods of the second grid component. Some larger soil clods cannot enter and accumulate on the side of the rods. When the first and second grid components are subjected to vertical vibration factors, they interact with each other. When approaching, the blocks of the first grid assembly actively push the soil clods accumulated on one side of the second grid assembly's rod outward, effectively removing slag. In traditional grid-type protective plate compactors, the grid protection often cannot achieve this active slag removal. Furthermore, the side of the baffle plate of the second grid assembly is widened to cover the first grid assembly, meaning that the second grid assembly is partially widened and then acts as a whole as a protective surface, preventing the first grid assembly from contacting the splashed soil and gravel. The vibration of the baffle plate of the second grid assembly, especially the small horizontal shaking, forms dynamic protection, which is more effective at blocking splashed slag than a static, gapped baffle structure.

[0008] The present invention is further configured such that the shaped frame and the connecting frame are fixedly installed, and the size of the shaped frame and the size of the connecting frame are matched.

[0009] Preferably, the size of the eccentric frame is slightly larger than the periphery of the connecting frame, so that the first inclined plate tilts outward to cover the structure below the connecting frame, reducing the gap between the eccentric frame and the connecting frame, which can reduce the amount of gravel splashing down from above.

[0010] The present invention is further configured such that a second grid assembly is installed around the perimeter of the bearing plate, and the mounting plate of the second grid assembly and the bearing plate are fixedly installed by bolts.

[0011] Preferably, the edge of the support plate is fitted with a second grid assembly of different lengths depending on the length and width of the support plate, and the second grid assembly is bolted on to facilitate disassembly and maintenance.

[0012] The present invention is further configured such that an movable gap is provided at the position where the first grille assembly and the second grille assembly are installed in an alternating manner.

[0013] Preferably, by setting an movable gap between the first grid assembly and the second grid assembly, the second grid assembly has sufficient room to vibrate when the tamping plate vibrates horizontally with a small amplitude, thus avoiding collision between the first grid assembly and the second grid assembly.

[0014] The present invention is further configured such that the driving device includes a hydraulic motor, a gear set, a rotating shaft and two sets of eccentric blocks, the two sets of eccentric blocks being arranged horizontally in opposite directions.

[0015] Preferably, the eccentric blocks are installed in a horizontally opposite manner, that is, the two sets of eccentric blocks are installed in opposite positions in the horizontal direction and rotate in opposite directions. When the two sets of eccentric blocks rotate, in the first case, both sets of eccentric blocks are located at the top or both sets of eccentric blocks are located at the bottom. In this case, although the two sets of eccentric blocks rotate in opposite directions, the centrifugal forces are superimposed upwards / downwards, which can increase the vertical vibration force. In the second case, one set of eccentric blocks is located on the horizontal left side (right side), and the other set of eccentric blocks is located on the horizontal right side (left side). The horizontal centrifugal forces cancel each other out, reducing the horizontal vibration of the tamping plate.

[0016] The present invention is further configured such that a clamping mechanism is provided on one side of the fixing frame, the clamping mechanism being used to fix the oil pipeline between the drive device and the excavator.

[0017] Preferably, the clamping mechanism can be a combination of clamping plates and bolts to clamp and fix the oil pipeline, thereby reducing vibration and wear of the oil pipeline.

[0018] The present invention is further configured such that the size of the ramming plate is larger than that of the first grid assembly and the second grid assembly.

[0019] Preferably, the first grid assembly and the second grid assembly are located inside the vertical projection plane of the tamping plate to avoid the first grid assembly and the second grid assembly affecting the operation of the tamping plate.

[0020] The invention is further configured such that the edge of the mounting plate is a guide slope.

[0021] Preferably, by setting the edge of the mounting plate to be inclined, some soil blocks can be prevented from entering the tamping plate.

[0022] In summary, the present invention has the following main beneficial effects: This invention uses a first grid assembly and a second grid assembly to cover the top of the ramming plate. The grid structure installation reduces the spread of soil clods into the ramming plate, which reduces the contact between the rubber sleeve, oil lines and pollution sources, thereby improving the service life of the plate compactor. At the same time, the grid structure can also ensure stable heat dissipation of the drive device.

[0023] The first and second grid components of this invention are assembled structures with sufficient vibration gaps reserved between adjacent grids. The first grid component is fixedly installed on the periphery of the connecting frame, and the first grid component covers the driving device downwards for protection. The upper end of the first grid component is tapered to reduce the opening space and decrease the risk of gravel splashing into the plate compactor. The second grid component is fixedly installed on the top of the compaction plate and vibrates with it. After the vibrating second grid component and the first grid component are staggered and interlocked, soil clods can be prevented from getting stuck in the grid gaps. The middle section of the second grid component is located on the outer wall of the middle section of the first grid component and is locally widened. Thus, the grid gaps of the second grid component form a dynamic protective wall when the second grid component is vibrated. Compared with a static grid structure, this can better reduce the amount of gravel passing through the gaps.

[0024] The hydraulic drive device in this invention uses a dual-shaft hydraulic motor with eccentric blocks installed in opposite horizontal directions. When the drive device is working, the horizontal centrifugal forces of the two sets of eccentric blocks cancel each other out, while the vertical centrifugal forces are superimposed, causing the tamping plate to vibrate mainly in the vertical direction, with a small amplitude of shaking in the horizontal direction. The cut blocks of the first grid assembly are located outside the second grid assembly, and the second grid assembly is distributed on the top of the tamping plate. Its grid structure can prevent some large soil clods from entering the interior of the tamping plate. When the tamping plate shakes up and down, it shortens the distance between the tamping plate and the cut blocks of the first grid assembly, thereby enabling the cut blocks to squeeze, crush, and discharge the soil clods embedded in the gaps around the second grid assembly and the accumulated soil clods. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram showing the distribution of the connecting frame, fixing frame, ramming plate, bearing plate, mounting feet, rubber sleeve, driving device and clamping mechanism of the present invention. Figure 3 This is a schematic diagram showing the distribution of the connecting frame and the first grid assembly of the present invention; Figure 4 This is a distribution diagram of the first and second grille assemblies of the present invention; Figure 5 This is a demonstration diagram of the installation of the first and second grille assemblies of the present invention; Figure 6 This is a side view of the present invention; Figure 7 For the present invention Figure 6 Enlarged view of point A in the image; Figure 8 This is a top view of the first and second grille assemblies of the present invention; Figure 9 This is a schematic diagram of the structure of an excavator plate compactor in the prior art; Figure 10 This is a schematic diagram of a grid structure used for protection in existing technology; Figure 11 This is a schematic diagram of the protection method using enclosure panels in the prior art.

[0026] Explanation of reference numerals in the attached figures: 1. Connecting frame; 2. Fixing frame; 3. Ramming plate; 4. Bearing plate; 5. Mounting feet; 6. Rubber sleeve; 7. Drive device; 8. Clamping mechanism; 9. First grid assembly; 901. Reverse frame; 902. First diagonal bar; 903. First vertical bar; 904. Cutting block; 10. Second grid assembly; 1001. Mounting plate; 1002. Second vertical bar; 1003. Barrier plate; 1004. Second diagonal bar. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0028] The embodiments of the present invention will now be described.

[0029] Please see Figures 1-8A protective plate compactor includes a connecting frame 1 connected to an excavator. A fixing frame 2 is located at the bottom of the connecting frame 1, and a compaction plate 3 is located below the fixing frame 2. The compaction plate 3 contacts the roadbed surface and vibrates to compact it. A bearing plate 4 is located on top of the compaction plate 3. Mounting feet 5 are provided on the top of the bearing plate 4, and multiple sets of rubber sleeves 6, made of flexible rubber, are connected to the compaction plate 3 via mounting feet 5. A drive device 7 is mounted on top of the bearing plate 4 and is connected to the hydraulic system of the excavator. A first grid assembly 9 is mounted on the outside of the compaction plate 3. The first grid assembly 9 includes a return frame 901, and the bottom of the return frame 901... The support plate 4 is provided with multiple sets of first diagonal bars 902, each set of first diagonal bars 902 has a first vertical bar 903 at its bottom, and each set of first vertical bars 903 has a cutting block 904 at its bottom. A second grid assembly 10 is installed on the edge of the support plate 4. The second grid assembly 10 includes a mounting plate 1001, the top of the mounting plate 1001 is provided with multiple sets of second vertical bars 1002, the top of each set of second vertical bars 1002 is provided with a barrier plate 1003, and the top of each set of barrier plates 1003 is provided with a second diagonal bar 1004. The first grid assembly 9 and the second grid assembly 10 are installed in an alternating manner, with the cutting block 904 located outside the second vertical bars 1002. 1003 is located outside the first vertical rod 903, and the sides of multiple sets of baffle plates 1003 are widened. The widened parts of two adjacent sets are used to cover the rod of the first grid assembly 9 in the middle, leaving some gaps for heat dissipation. The first grid assembly 9 is fixed to the connecting frame 1, while the second grid assembly 10 vibrates vertically with the tamping plate 3. When soil clods move onto the tamping plate 3, they are first blocked by the rod of the second grid assembly 10. Some larger soil clods cannot enter and accumulate on the side of the rod. When the first grid assembly 9 and the second grid assembly 10 are brought closer to each other due to vertical vibration, the cutting blocks 904 of the first grid assembly 9 actively push away the accumulated soil. The soil clods on one side of the second grid assembly 10 are pushed outward, which plays an active role in slag removal. In traditional grid-type protective plate compactors, the grid protection often cannot achieve active slag removal. Furthermore, the side of the baffle plate 1003 of the second grid assembly 10 is widened to cover the first grid assembly 9. In other words, the second grid assembly 10 is widened locally and then used as a whole as a protective surface, so that the first grid assembly 9 no longer comes into contact with the splashed soil clods and gravel. The vibration of the baffle plate 1003 of the second grid assembly 10, especially the small amplitude shaking in the horizontal direction, forms dynamic protection. Compared with a static baffle structure with gaps, it can better block splashed soil and debris.

[0030] Please refer to the above embodiments for further details. Figure 3The return frame 901 and the connecting frame 1 are fixedly installed, and the size of the return frame 901 matches the size of the connecting frame 1. The size of the return frame 901 is slightly larger than the outer perimeter of the connecting frame 1. Therefore, the first diagonal bar 902 tilts outward to cover the structure below the connecting frame 1, reducing the gap between the return frame 901 and the connecting frame 1, which can reduce the amount of gravel that splashes down from above.

[0031] Please refer to the above embodiments for further details. Figure 4 The support plate 4 is equipped with a second grid assembly 10 around its perimeter. The mounting plate 1001 of the second grid assembly 10 is fixed to the support plate 4 by bolts. The second grid assembly 10 of different lengths is installed on the edge of the support plate 4 according to the length and width of the support plate 4. The second grid assembly 10 is installed with bolts to facilitate disassembly and maintenance of the second grid assembly 10.

[0032] Please refer to the above embodiments for further details. Figure 8 The first grid assembly 9 and the second grid assembly 10 are installed in an alternating manner with a movable gap. By setting a movable gap between the first grid assembly 9 and the second grid assembly 10, when the tamping plate 3 vibrates horizontally with a small amplitude, the second grid assembly 10 has enough room to shake, thus avoiding the first grid assembly 9 and the second grid assembly 10 from colliding with each other.

[0033] Please refer to the above embodiments for further details. Figure 2 The drive device 7 includes a hydraulic motor, a gear set, a rotating shaft, and two sets of eccentric blocks. The two sets of eccentric blocks are horizontally opposite to each other. By utilizing the horizontally opposite installation of the eccentric blocks, that is, the two sets of eccentric blocks are installed in opposite positions in the horizontal direction and rotate in opposite directions, when the two sets of eccentric blocks rotate, in the first case, the two sets of eccentric blocks are located at the top or both sets of eccentric blocks are located at the bottom. At this time, although the two sets of eccentric blocks rotate in opposite directions, the centrifugal forces are superimposed upward / downward, which can increase the vertical vibration force. In the second case, one set of eccentric blocks is located on the horizontal left side (right side), and the other set of eccentric blocks is located on the horizontal right side (left side). The horizontal centrifugal forces cancel each other out, reducing the horizontal vibration of the tamping plate 3.

[0034] Please refer to the above embodiments for further details. Figure 2 A clamping mechanism 8 is provided on one side of the fixing frame 2. The clamping mechanism 8 is used to fix the oil pipeline between the drive device 7 and the excavator. The clamping mechanism 8 can use a combination of clamping plates and bolts to clamp and fix the oil pipeline, reduce the vibration of the oil pipeline, and reduce pipeline wear.

[0035] Please refer to the above embodiments for further details. Figure 1The size of the tamping plate 3 is larger than that of the first grid assembly 9 and the second grid assembly 10. The first grid assembly 9 and the second grid assembly 10 are located inside the vertical projection plane of the tamping plate 3 to avoid the first grid assembly 9 and the second grid assembly 10 affecting the operation of the tamping plate 3.

[0036] Please refer to the above embodiments for further details. Figure 5 The edge of the mounting plate 1001 is set as a guide slope. By setting the edge of the mounting plate 1001 to be inclined, some soil blocks can be blocked from entering the tamping plate 3.

[0037] In practical operation, the plate compactor attachment is installed at the end of the excavator via a pin, and the oil circuit of the drive device 7 is connected to the hydraulic system of the excavator. During the roadbed compaction, the hydraulic system of the excavator is started to deliver high-pressure oil into the drive device 7. The hydraulic motor of the drive device 7 drives two sets of eccentric wheels that rotate in opposite directions, generating a vertical excitation force. This force is transmitted in the reverse direction to the bearing plate 4 and the compactor plate 3 through the drive device 7. That is, the compactor plate 3 vibrates violently in the vertical direction, with only a small amplitude in the horizontal direction.

[0038] When the tamping plate 3 vibrates violently in the vertical direction, the sand on the roadbed surface will be compacted under the vibration of the tamping plate 3, and some sand will spread to the surface of the tamping plate 3. At this time, the sand at the top of the tamping plate 3 is carried upward by the tamping plate 3, that is, the sand actively approaches the cutting block 904. The cutting block 904 will crush and squeeze some of the larger sand, especially when the plate compactor is raised and lowered to adjust the working area. The cutting block 904 crushes and squeezes the sand, causing the sand to be discharged to the edge of the tamping plate 3. It can also prevent some sand from getting stuck between the gaps of the two adjacent sets of second vertical bars 1002. When the baffle plates 1003 of multiple sets of second grid assembly 10 vibrate with the tamping plate 3, they form a dynamic protective wall, reducing the risk of the bounced sand entering the space where the drive device 7 is located through the gaps. The side of the partition 1003 is widened to wrap the rod of the first grid assembly 9 and retain heat dissipation gaps. It is used to cover the first grid assembly 9, so that the second grid assembly 10 is widened in part and the whole serves as a protective surface, so that the first grid assembly 9 no longer comes into contact with the splashed soil and gravel. The barrier plate 1003 of the second grid assembly 10 vibrates, especially with small horizontal shaking, forming dynamic protection. Compared with a static barrier structure with gaps, it can better block splashed soil. That is to say, when the first grid assembly 9 and the second grid assembly 10 in this application are used together and work together, the grid structure can first block larger soil clods from bottom to top, and at the same time push larger soil clods outward and discharge them. Then the dynamic protective layer above can better block splashed gravel.

[0039] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A protective plate compactor, comprising a connecting frame (1) connected to an excavator, characterized in that: The bottom of the connecting frame (1) is provided with a fixed frame (2), and a ramming plate (3) is provided below the fixed frame (2). A bearing plate (4) is provided on the top of the ramming plate (3). The top of the bearing plate (4) is provided with mounting feet (5). The mounting feet (5) and the ramming plate (3) are connected by multiple sets of rubber sleeves (6). A driving device (7) is installed on the top of the bearing plate (4). The driving device (7) is connected to the hydraulic system of the excavator. A first grid assembly (9) is installed on the outside of the ramming plate (3). The first grid assembly (9) includes a return frame (901). The bottom of the return frame (901) is provided with multiple sets of first diagonal bars (902). The bottom of each set of first diagonal bars (902) is provided with a first vertical bar (903). The bottom of each of the 903 components is provided with a cutting block (904), and the edge of the bearing plate (4) is provided with a second grid assembly (10). The second grid assembly (10) includes a mounting plate (1001). The top of the mounting plate (1001) is provided with multiple sets of second vertical bars (1002). The top of each set of second vertical bars (1002) is provided with a barrier plate (1003). The top of each set of barrier plates (1003) is provided with a second diagonal bar (1004). The first grid assembly (9) and the second grid assembly (10) are interlocked and installed, and the cutting block (904) is located outside the second vertical bar (1002). The barrier plate (1003) is located outside the first vertical bar (903), and the sides of the multiple sets of barrier plates (1003) are widened.

2. The plate compactor with protective effect according to claim 1, characterized in that: The return frame (901) and the connecting frame (1) are fixedly installed, and the size of the return frame (901) matches the size of the connecting frame (1).

3. A plate compactor with protective effect according to claim 2, characterized in that: The support plate (4) is equipped with a second grid assembly (10) around its perimeter. The mounting plate (1001) of the second grid assembly (10) and the support plate (4) are fixedly installed by bolts.

4. A plate compactor with protective effect according to claim 3, characterized in that: The first grille assembly (9) and the second grille assembly (10) are installed with an adjustable gap at their staggered fit positions.

5. A plate compactor with protective effect according to claim 1, characterized in that: The drive device (7) includes a hydraulic motor, a gear set, a rotating shaft and two sets of eccentric blocks, which are arranged horizontally opposite each other.

6. A plate compactor with protective effect according to claim 1, characterized in that: A clamping mechanism (8) is provided on one side of the fixing frame (2), which is used to fix the oil pipeline between the drive device (7) and the excavator.

7. A plate compactor with protective effect according to claim 4, characterized in that: The size of the ramming plate (3) is larger than that of the first grid assembly (9) and the second grid assembly (10).

8. A plate compactor with protective effect according to claim 7, characterized in that: The edge of the mounting plate (1001) is set as a guide slope.

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