A tamper head for an excavator

Abstract

The utility model discloses a rammer head for excavator, including rammer board, the rammer board lower extreme is provided with the expansion board, the assembly mechanism sets up between the rammer board and expansion board, the extension seat sets up in the rammer board upper end middle, the connecting seat sets up in the extension seat upper end middle, the damping mechanism sets up between the extension seat and connecting seat the connecting seat upper end fixedly connected with the drill rod. The utility model has the advantages compared with prior art in that: when assembling rammer board and expansion board, the plug-in seat is sleeved outside the plug-in board, the contact surface of the connecting part is large, the connection is more stable, the impact resistance of the connecting part is good, the service life is longer, and by setting the damper and the damping spring buffer, the upward reaction force of the rammer board and the expansion board is buffered, the connecting part between the extension seat and the connecting seat is damped, at the same time, the buffer pad on the extension seat and the connecting plate reduces the damage caused by the hard impact of the connecting part, prolonging the service life of the device.

Description

Technical Field

[0001] This utility model relates to the field of tamping technology, specifically to a tamping head for excavators. Background Technology

[0002] A tamping head is a device used to compact backfill soil at a construction site. It is connected to an excavator, and the excavator operates the tamping head to gradually compact the soil by tamping it.

[0003] The excavator accessory welded steel plate type rammer described in authorization announcement number CN222594790U includes a chisel rod, a cylinder sleeved on the outer side of the chisel rod, a fixing device fixedly connected to the chisel rod on the outer side of the cylinder, a circular plate at the bottom of the cylinder, and a detachable steel plate at the bottom of the circular plate. The advantages of this utility model are: it does not occupy a separate chisel rod, and the chisel rod and the device will not become loose.

[0004] However, existing technologies still have shortcomings:

[0005] 1. In the prior art, the bottom of the circular plate is provided with a detachable steel plate. The circular plate and the steel plate are respectively provided with ear one and ear two for connection. Ear one and ear two are connected by a pin. The connection surface at the pin connection is small. High-frequency tamping operation will cause the pin to loosen or break easily.

[0006] 2. In the prior art, the inner bottom of the cylinder is provided with an inverted conical limiting cylinder that cooperates with the drill rod. This can increase the contact area between the drill rod and the inverted conical limiting cylinder and reduce damage to the device and the drill rod. However, the rigid contact will generate a large impact force, which makes the circular plate prone to breakage due to the concentration of force between it and the drill rod, thus reducing the service life of the device.

[0007] The information disclosed in this background section is intended only to enhance the understanding of the overall background of the invention and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0008] The technical problem to be solved by this utility model is to overcome the above-mentioned defects and provide a tamping head for excavators.

[0009] To solve the above-mentioned technical problems, the technical solution provided by this utility model is: a tamping head for an excavator, including a tamping plate, wherein an extension plate is provided at the lower end of the tamping plate;

[0010] An assembly mechanism is disposed between a ramming plate and an extension plate. The assembly mechanism includes plug-in seats fixedly connected to the front and rear sides of the upper end of the extension plate. A plug-in plate is inserted into the plug-in seat, and the lower end of the plug-in plate is fixedly connected to the upper end of the ramming plate.

[0011] The extension seat is located at the middle of the upper end of the ramming plate;

[0012] A connecting seat, wherein the connecting seat is disposed at the middle of the upper end of the extension seat;

[0013] A shock-absorbing mechanism is disposed between an extension seat and a connecting seat. The shock-absorbing mechanism includes a slide rod disposed in the middle of the upper end of the extension seat. A connecting plate is fixedly connected to the upper end of the slide rod. A plurality of dampers and shock-absorbing springs distributed in a circular matrix are fixedly connected to the lower edge of the connecting plate. The lower ends of the dampers and shock-absorbing springs are fixedly connected to the lower end of the connecting seat. The shock-absorbing springs are sleeved on the outside of the dampers. Buffer pads are fixedly connected to the upper ends of both the extension seat and the connecting plate.

[0014] As an improvement, the connectors are arranged in a circular matrix at the upper end of the expansion board.

[0015] As an improvement, a chisel is fixedly connected to the upper end of the connecting seat.

[0016] As an improvement, a pin is inserted into the middle of the upper end of the connector, and the lower end of the pin passes through the connector plate.

[0017] As an improvement, U-shaped spring pieces are provided on the upper ends of both sides of the pin, and a locking block is provided on the side of the spring piece away from the pin. The plug seat is provided with a slot for cooperating with the locking block, and a pressing head is fixedly connected to the upper end of the spring piece.

[0018] The advantages of this utility model compared with the prior art are as follows: 1. In this utility model, during assembly, the ramming plate is inserted into the groove at the upper end of the extension plate, and then the ramming plate is rotated to rotate the insertion plate into the insertion seat. One end of the insertion seat is a closed structure, so the splicing can be completed when the insertion plate can no longer be rotated. Because the cross-section of the insertion plate is an "L" shape rotated ninety degrees to the right, the insertion seat is sleeved on the outside of the insertion plate. The contact surface at the connection is large and the connection is more stable, which makes the connection more impact-resistant and has a longer service life.

[0019] 2. In this utility model, when the excavator drives the tamping plate and the extension plate to move downward for tamping, the damper and shock-absorbing spring buffer the upward reaction force of the tamping plate and the extension plate, and reduce the shock at the connection between the extension seat and the connecting seat. In addition, the buffer pads on the extension seat and the connecting plate reduce the damage caused by hard impact at the connection, extend the service life of the device, and at the same time reduce the vibration force transmitted to the excavator by the device during tamping. Attached Figure Description

[0020] Figure 1 This is a structural schematic diagram of a ramming head for an excavator according to the present invention.

[0021] Figure 2 This is a right view of a ramming head for an excavator according to this utility model.

[0022] Figure 3 yes Figure 2 Sectional view at point AA.

[0023] Figure 4 yes Figure 2 Sectional view at point BB.

[0024] Figure 5 This is a partial structural diagram of a ramming head for an excavator according to the present invention. Figure 1 .

[0025] Figure 6 This is a partial structural diagram of a ramming head for an excavator according to the present invention. Figure 2 .

[0026] Figure 7 This is a partial structural diagram of a ramming head for an excavator according to the present invention. Figure 3 .

[0027] As shown in the figure: 1. Ramming plate; 2. Extension plate; 3. Assembly mechanism; 31. Plug-in socket; 32. Plug-in plate; 4. Extension seat; 5. Connecting seat; 6. Shock absorption mechanism; 61. Slide rod; 62. Connecting plate; 63. Damper; 64. Shock absorption spring; 65. Buffer pad; 7. Chisel rod; 8. Pin; 9. Spring; 10. Locking block; 11. Locking groove; 12. Pressing head. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings.

[0029] A type of excavator tamping head, such as Figure 1 As shown, it includes a tamping plate 1, with an extension plate 2 at the lower end of the tamping plate 1. The tamping plate 1 is inserted into the upper end of the extension plate 2. When needed, the extension plate 2 can be assembled to the lower end of the tamping plate 1 to expand the compaction area.

[0030] like Figure 1 and 3 As shown, an assembly mechanism 3 is provided between the ramming plate 1 and the extension plate 2. The assembly mechanism 3 includes a plug-in seat 31 fixedly connected to the front and rear sides of the upper end of the extension plate 2. A plug-in plate 32 is inserted into the plug-in seat 31, and the lower end of the plug-in plate 32 is fixedly connected to the upper end of the ramming plate 1. The plug-in seats 31 are distributed in a circular matrix on the upper end of the extension plate 2. During assembly, the ramming plate 1 is inserted into the groove on the upper end of the extension plate 2, and then the ramming plate 1 is rotated to rotate the plug-in plate 32 into the plug-in seat 31. One end of the plug-in seat 31 is a closed structure, so the splicing can be completed when the plug-in plate 32 can no longer be rotated. Because the cross section of the plug-in plate 32 is an "L" shape rotated 90 degrees to the right, the plug-in seat 31 is sleeved on the outside of the plug-in plate 32. The contact surface at the connection is large and the connection is more stable, which makes the connection more impact-resistant and has a longer service life.

[0031] A pin 8 is inserted into the middle of the upper end of the connector 31. The pin 8 passes through the upper and lower ends of the connector 31, and the lower end of the pin 8 passes through the connector plate 32. The pin 8 limits the connector 31 and the connector plate 32 so that the connector 31 and the connector plate 32 will not move relative to each other.

[0032] like Figure 4 and 7 As shown, U-shaped spring pieces 9 are provided on the upper ends of both sides of the pin 8. The spring pieces 9 can be metal spring pieces. A locking block 10 is provided on the side of the spring piece 9 away from the pin 8. The connector 31 has a slot 11 for use with the locking block 10. A pressing head 12 is fixedly connected to the upper end of the spring piece 9. Anti-slip rubber pads are provided on both sides of the pressing head 12. Pressing the pressing heads 12 on both sides inserts the pin 8 into the connector 31 and the connector plate 32. Then, releasing the pressing head 12 will cause the locking blocks 10 on both sides to engage in the slot 11 to complete the fixation. The operation is convenient and easy to use and replace.

[0033] An extension seat 4 is provided at the middle of the upper end of the tamping plate 1. The extension seat 4 and the tamping plate 1 are integrally formed, making them more robust and durable. A connecting seat 5 is fixedly connected to the middle of the upper end of the extension seat 4. A chisel 7 is fixedly connected to the upper end of the connecting seat 5. The chisel 7 is used to connect to the connecting mechanism on the excavator.

[0034] A shock-absorbing mechanism 6 is provided between the extension seat 4 and the connecting seat 5. The shock-absorbing mechanism 6 includes a slide rod 61 located in the middle of the upper end of the extension seat 4. A connecting plate 62 is fixedly connected to the upper end of the slide rod 61. Several dampers 63 and shock-absorbing springs 64 distributed in a circular matrix are fixedly connected to the lower edge of the connecting plate 62. The lower ends of the dampers 63 and shock-absorbing springs 64 are fixedly connected to the lower end of the connecting seat 5. The shock-absorbing springs 64 are sleeved on the outside of the dampers 63. Buffer pads 65 are fixedly connected to the upper ends of both the extension seat 4 and the connecting plate 62. By setting the dampers 63 and shock-absorbing springs 64 to buffer the upward reaction force of the tamping plate 1, the connection between the extension seat 4 and the connecting seat 5 is damped. The buffer pads 65 on the extension seat 4 and the connecting plate 62 reduce the damage caused by hard impacts at the connection, extend the service life of the device, and simultaneously reduce the vibration force transmitted to the excavator by the device during tamping.

[0035] In specific implementation of this utility model, such as Figure 1-7As shown, during use, the device is connected to the connecting mechanism on the excavator via the chisel 7. The required construction area can then be compacted using the tamping plate 1. When the site area is large and a larger tamping surface is required, the extension plate 2 can be assembled to the lower end of the tamping plate 1 to expand the compaction area. During assembly, the tamping plate 1 is inserted into the groove at the upper end of the extension plate 2. Then, the tamping plate 1 is rotated to rotate the insertion plate 32 into the insertion seat 31. One end of the insertion seat 31 is a closed structure, so the splicing can be completed when the insertion plate 32 can no longer be rotated. Because the cross-section of the insertion plate 32 is an "L" shape rotated 90 degrees to the right, the insertion seat 31 is fitted onto the outside of the insertion plate 32. The larger contact surface at the connection point makes the connection more stable, resulting in better impact resistance and a longer service life.

[0036] Then, insert the pins 8 one by one, press the pressing heads 12 on both sides to insert the pins 8 into the connector 31 and the connector plate 32. The pins 8 limit the connector 31 and the connector plate 32 so that the connector 31 and the connector plate 32 will not move relative to each other. Then release the pressing heads 12, and the locking blocks 10 on both sides will lock into the slots 11 to complete the fixation. The operation is convenient and easy to use and replace.

[0037] When the excavator moves the tamping plate 1 and the extension plate 2 downwards for tamping, the damper 63 and the shock-absorbing spring 64 buffer the upward reaction force of the tamping plate 1 and the extension plate 2, and reduce the vibration at the connection between the extension seat 4 and the connecting seat 5. In addition, the buffer pad 65 on the extension seat 4 and the connecting plate 62 reduces the damage caused by hard impacts at the connection, extends the service life of the device, and at the same time reduces the vibration force transmitted to the excavator by the device during tamping.

[0038] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A tamping head for an excavator, comprising a tamping plate (1), wherein an extension plate (2) is provided at the lower end of the tamping plate (1), characterized in that: Assembly mechanism (3) is disposed between ramming plate (1) and extension plate (2). Assembly mechanism (3) includes plug-in seats (31) fixedly connected to the front and rear sides of the upper end of extension plate (2). A plug-in plate (32) is inserted inside the plug-in seat (31). The lower end of the plug-in plate (32) is fixedly connected to the upper end of ramming plate (1). Extension seat (4), the extension seat (4) is disposed at the middle of the upper end of the ramming plate (1); Connecting seat (5), the connecting seat (5) is disposed at the middle of the upper end of the extension seat (4); A damping mechanism (6) is provided between the extension seat (4) and the connecting seat (5). The damping mechanism (6) includes a slide rod (61) located in the middle of the upper end of the extension seat (4). A connecting plate (62) is fixedly connected to the upper end of the slide rod (61). Several dampers (63) and damping springs (64) distributed in a circular matrix are fixedly connected to the lower edge of the connecting plate (62). The lower ends of the dampers (63) and damping springs (64) are fixedly connected to the lower end of the connecting seat (5). The damping springs (64) are sleeved on the outside of the dampers (63). Buffer pads (65) are fixedly connected to the upper ends of both the extension seat (4) and the connecting plate (62).

2. The tamping head for excavators according to claim 1, characterized in that: The connectors (31) are arranged in a circular matrix on the upper end of the expansion plate (2).

3. The tamping head for excavators according to claim 1, characterized in that: A drill rod (7) is fixedly connected to the upper end of the connecting seat (5).

4. The tamping head for excavators according to claim 1, characterized in that: A pin (8) is inserted into the middle of the upper end of the socket (31), and the lower end of the pin (8) passes through the socket plate (32).

5. The tamping head for excavators according to claim 4, characterized in that: The upper ends of both sides of the pin (8) are provided with U-shaped spring pieces (9), and the side of the spring piece (9) away from the pin (8) is provided with a locking block (10). The plug seat (31) is provided with a slot (11) for use with the locking block (10). The upper end of the spring piece (9) is fixedly connected with a pressing head (12).

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