Excavator tamping device

Abstract

A tamping device of an excavator comprises a tamping hammer, a rectangular tamping plate is arranged on the lower side of the tamping hammer, a tilt angle sensor is embedded in the upper side of the tamping plate, four first rib plates and four second rib plates which extend in the radial direction and are connected with the tamping plate are arranged on the lower portion of the tamping hammer, and the first rib plates extend to the centers of the four rectangular side edges of the tamping plate. The second rib plates extend to the four rectangular corners of the tamping plate, each first rib plate is provided with a rectangular through groove, each rectangular through groove is internally provided with a vertical long-strip-shaped plate, the long-strip-shaped plates are parallel to the corresponding first rib plates, the upper ends and the lower ends of the long-strip-shaped plates are connected with the corresponding rectangular through grooves respectively, the thickness of the long-strip-shaped plates is smaller than that of the first rib plates, and the thickness of the long-strip-shaped plates is smaller than that of the first rib plates. Resistance type strain gauges are arranged on the two sides of each long-strip-shaped plate in the thickness direction. The device is mounted on a hydraulic breaking hammer head of the excavator, can be used for tamping at the backfill positions of beams, walls and column sides where a road roller cannot reach, can be used for accurately controlling the inclination angle of the tamping plate, and also has a safety early warning function.

Description

Technical Field

[0001] The invention relates to a compacting device for an excavator. Background Art

[0002] During construction, backfill soil needs to be carried out around foundation beams, columns, and shear walls, and compaction is required after backfilling. If the backfilling is not compacted, the external frame will be suspended in the air, which may cause safety accidents such as external frame collapse in the early stage, and will cause floor settlement and cracking in the later stage. Due to the special location of the backfill soil, it is impossible to use a roller to operate on a large area. At present, the construction industry generally uses manual hand-held diesel tamping machines to compact the backfill soil around foundation beams, columns, and shear walls. The structure of the tamping machine can be found in Chinese patent CN201710421386.7. Its construction efficiency is low, manual hand-held operation is dangerous, and the construction quality cannot be guaranteed. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an excavator compaction device, which is installed on the hydraulic breaker hammer head of the excavator and can compact the backfill soil at the edge of beams, walls and columns that the roller cannot reach. The inclination angle of the tamping plate can be accurately controlled and it also has a safety warning function.

[0004] In order to solve the above technical problems, the present invention provides an excavator compaction device, including a vertically arranged cylindrical rammer, a horizontally arranged rectangular rammer plate is provided at the lower side of the rammer, at least one inclination sensor is embedded on the upper side of the rammer, and four vertically arranged first ribs are provided at the lower part of the rammer, extending radially outward along the rammer and connected to the rammer plate, and the four first ribs extend along the length direction away from the rammer at one end to the centers of the four sides of the rectangle of the rammer plate respectively, and the lower part of the rammer is also provided with four vertically arranged second ribs extending radially outward along the rammer and connected to the rammer plate, and the four second ribs extend along the length direction away from the rammer at one end to the four corners of the rectangle of the rammer plate respectively. Each of the first ribs is provided with a rectangular through groove running through it in the thickness direction, and the rectangular through groove is located in the middle area in the height direction of the corresponding first rib. A vertically arranged long strip plate is provided in each rectangular through groove, and each long strip plate is arranged parallel to the corresponding first rib. The upper and lower ends of each long strip plate are respectively connected to the upper and lower edges of the corresponding rectangular through groove, and both sides in the width direction of each long strip plate are in a non-contact state with the edges of the corresponding rectangular through groove. The thickness of each long strip plate is less than the thickness of the corresponding first rib, and resistive strain gauges are provided on both sides in the thickness direction of each long strip plate corresponding to the middle area in the height direction.

[0005] For the purpose of simple explanation, the excavator compaction device described in the present invention is referred to as the device below.

[0006] Advantages of this device: The upper end of the rammer of this device is fixed to the end of the hydraulic breaker hammer head of the excavator, and the whole device reciprocates with the hydraulic breaker hammer head, converting the original crushing impact of the breaker hammer head into a compacting impact. Under the joint action of gravity and the hydraulic accumulator, the rammer plate repeatedly impacts the ground to achieve a compacting effect. Due to the high maneuverability of the excavator and the flexible swing arm control, this device can be used to compact the backfill soil at the beam, wall, and column edge that the roller cannot reach. Since this device is controlled by the excavator swing arm, it can not only compact the flat ground, but also adapt to various terrains and various operation methods. It can complete the processing of complex foundations such as plane compaction, slope compaction, step compaction, groove pit compaction, etc. The inclination sensor can detect the inclination angle of the rammer plate in real time, and transmit the inclination information of the rammer plate to the operator through the external controller and display screen. The operator can accurately adjust the inclination of the rammer plate according to actual needs. When the rammer is performing compaction operations, it is inevitable that the rammer or rammer plate may break or bend due to uneven force or collision with hard objects. If this is not discovered and repaired or replaced in time, it will not only affect the compaction effect but also pose a risk of injury. When the device is performing compaction operation, the four first ribs will produce a small amount of deformation due to the supporting force at each impact, and the resistive strain gauges arranged on the long strip plate will also undergo corresponding compression or tension deformation with the corresponding first ribs. This deformation will cause the resistance of the resistive strain gauge itself to change. Through the principle of Wheatstone bridge, the force size, direction and the resistance change of each resistive strain gauge are calibrated, so that the current force conditions of the rammer and rammer plate are reflected by detecting the changes in the resistance values ​​of all resistive strain gauges. The force conditions can also be transmitted to the operator through an external controller and display screen. When a force condition exceeds its limit load occurs, a timely warning can be issued to prevent further danger. The long strip plate is arranged in a rectangular through groove, and only the upper and lower ends are connected to the ribs, and the thickness of each long strip plate is less than the thickness of the corresponding first rib. This can amplify the deformation amount, thereby increasing the detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a top view of the device.

[0008] Figure 2 yes Figure 1 AA section view (to facilitate the display of structural features, Figure 2 The second rib is not shown).

[0009] Figure 3 yes Figure 2 A partial enlarged view of part B in the middle. DETAILED DESCRIPTION

[0010] See also Figure 1-Figure 3, a compacting device for an excavator comprises a vertically arranged cylindrical rammer 1, a horizontally arranged rectangular rammer plate 2 is arranged at the lower side of the rammer 1, an inclination sensor 3 is embedded at the upper side of the rammer plate 2, four vertically arranged first ribs 4 extending radially outward along the rammer 1 and connected to the rammer plate 2 are arranged at the lower part of the rammer 1, the four first ribs 4 extend to the centers of the four sides of the rectangle of the rammer plate 2 along the ends away from the rammer 1 along the length direction thereof, respectively, the lower part of the rammer 1 is further provided with four vertically arranged second ribs 5 extending radially outward along the rammer 1 and connected to the rammer plate 2, the four second ribs 5 extend to the four corners of the rectangle of the rammer plate 2 along the ends away from the rammer 1 along the length direction thereof, each of the first ribs 4 extends to the centers of the four sides of the rectangle of the rammer plate 2, respectively, Each rib 4 is provided with a rectangular through groove 41 which passes through it in the thickness direction. The rectangular through groove 41 is located in the middle area in the height direction of the corresponding first rib 4. A vertically arranged long strip plate 6 is provided in each rectangular through groove 41. Each long strip plate 6 is arranged parallel to the corresponding first rib 4. The upper and lower ends of each long strip plate 6 are respectively connected to the upper and lower edges of the corresponding rectangular through groove 41. Both sides in the width direction of each long strip plate 6 are in a non-contact state with the edges of the corresponding rectangular through groove 41. The thickness of each long strip plate 6 is less than the thickness of the corresponding first rib 4, and a resistive strain gauge 7 is provided on both sides in the thickness direction of each long strip plate 6 corresponding to the middle area in the height direction.

Claims

1. An excavator compaction device, characterized in that: It includes a vertically arranged cylindrical rammer, a horizontally arranged rectangular rammer plate is provided at the lower side of the rammer, at least one inclination sensor is embedded on the upper side of the rammer, four vertically arranged first ribs are provided at the lower part of the rammer, extending radially outward along the rammer and connected to the rammer plate, the four first ribs extend along the length direction away from the rammer at one end to the centers of the four sides of the rectangular rammer plate respectively, the rammer is also provided at the lower part of the rammer, extending radially outward along the rammer and connected to the rammer plate, the four second ribs extend along the length direction away from the rammer at one end to the four corners of the rectangular rammer plate respectively, and each of the first ribs has A rectangular through slot is provided which runs through the rib along the thickness direction. The rectangular through slot is located in the middle area in the height direction of the corresponding first rib. A vertically arranged long strip plate is provided in each rectangular through slot. Each long strip plate is arranged parallel to the corresponding first rib. The upper and lower ends of each long strip plate are respectively connected to the upper and lower edges of the corresponding rectangular through slot. Both sides in the width direction of each long strip plate are in a non-contact state with the edges of the corresponding rectangular through slot. The thickness of each long strip plate is less than the thickness of the corresponding first rib. Resistive strain gauges are provided on both sides in the thickness direction of each long strip plate in the middle area in the height direction corresponding to the middle area of ​​the height direction.

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