CN217839958U

CN217839958U - Multifunctional rammer

Info

Publication number: CN217839958U
Application number: CN202222062325.5U
Authority: CN
Inventors: 徐万龙; 郭贵敏; 刘俊毕; 邓育荣; 高斌峰
Original assignee: China Zhonghua Geotechnical Engineering Group Co ltd
Current assignee: China Zhonghua Geotechnical Engineering Group Co ltd
Priority date: 2022-08-05
Filing date: 2022-08-05
Publication date: 2022-11-18
Anticipated expiration: 2032-08-05

Abstract

The utility model discloses a multifunctional rammer, which comprises a hammer nose, a hammer body upper part and a hammer body lower part, wherein the hammer nose is of an n-shaped structure, and the lower part of the hammer nose is connected to the top surface of the hammer body upper part; the upper part of the hammer body is a large cylinder which is provided with a through vent hole which is communicated up and down, and the lower surface of the upper part of the hammer body is provided with the lower part of the hammer body; the lower part of the hammer body is a small cylinder coaxial with the large cylinder, and the diameter of the lower part of the hammer body is 1/5-4/5 of that of the upper part of the hammer body. The utility model has reasonable design, simple structure, convenient manufacture, flexible prefabrication according to the diameter of the rammer, economy and practicality; the safety threat problem that earth and stones are splashed when the rammer impacts the ground is solved while the reinforcing effect is effectively improved, and the safety risk of a dynamic compaction construction site can be reduced.

Description

Multifunctional rammer

Technical Field

The utility model relates to a multi-functional rammer.

Background

The dynamic compaction method is also called dynamic consolidation method. The heavy hammer of 8-60 tons freely falls from the height of 6-40 meters by using a large crawler-type dynamic compactor to carry out strong compaction on the foundation, and the dynamic compaction method can not only improve the strength of the foundation soil and reduce the compressibility of the foundation soil, but also improve the anti-vibration liquefaction capability and eliminate the collapsibility of the soil, so that the heavy hammer is not only suitable for treating gravel soil, sandy soil, silt, cohesive soil, miscellaneous fill and plain fill foundations, but also commonly used for treating liquefiable sandy soil foundations and collapsible loess foundations.

The rammer is an important working component in dynamic compaction construction, and most of the rammers commonly used at present are cylindrical manufactured by casting, combining steel plates or welding a shell and then filling the inside of the shell. The diameter of the rammer is too small, and the filler is extruded to the periphery of the rammer during ramming to cause swelling; when the diameter of the rammer is too large, the pressure of the rammer on the ground is reduced, and the expected treatment depth cannot be reached. Because the ram falls at a high speed, in the twinkling of an eye when contacting ground, the impact of ram can lead to its earth stone on every side to splash all around, simultaneously, the air produces the blast by sharp diffusion behind the powerful compression at the bottom of the hammer, has aggravated speed and the quantity that splashes, brings very big potential safety hazard to ground staff.

In order to solve the problems, technicians improve or protect the rammer to a certain extent, but because the working environment is severe, the existing improvement or protection cannot keep up with the problems. Therefore, when the tamping effect is improved, sand splashing is reduced, and safety of constructors and equipment is ensured.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve the above-mentioned technical problem and provide a multi-functional rammer, when improving the tamping effect, reduce the grit and splash, guarantee constructor and equipment safety.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a multifunctional rammer comprises a hammer nose, a hammer body upper part and a hammer body lower part, wherein the hammer nose is of an n-shaped structure, and the lower part of the hammer nose is connected to the top surface of the hammer body upper part; the upper part of the hammer body is a large cylinder which is provided with a through vent hole which is communicated up and down, and the lower surface of the upper part of the hammer body is provided with the lower part of the hammer body; the lower part of the hammer body is a small cylinder coaxial with the large cylinder, and the diameter of the lower part of the hammer body is 1/5-4/5 of the diameter of the upper part of the hammer body.

The height of the lower part of the hammer body is 0.1-1.5 m.

The upper part of the hammer body and the lower part of the hammer body are integrally formed.

The upper part of the hammer body is welded with the lower part of the hammer body.

The hammer nose is welded with the top surface of the upper part of the hammer body.

And the hammer nose and the top surface of the upper part of the hammer body are welded with a stiffened plate.

The beneficial effects of the utility model are that: the utility model has reasonable design, simple structure, convenient manufacture, flexible prefabrication according to the diameter of the rammer, economy and practicality; the safety threat problem that earth and stones are splashed when the rammer impacts the ground is solved while the reinforcing effect is effectively improved, and the safety risk of a dynamic compaction construction site can be reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention, the embodiments will be described below with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

The following description is given by way of example only, and not by way of limitation, of the scope of the invention.

As shown in fig. 1, the multifunctional rammer comprises a hammer nose 1, a hammer body upper part 2 and a hammer body lower part 3, wherein the hammer nose 1 is of an n-shaped structure, the hammer nose 1 is connected with a dynamic compaction device through a steel wire rope, and the lower part of the hammer nose 1 is connected to the top surface of the hammer body upper part 2; the upper part 2 of the hammer body is a large cylinder which is provided with a plurality of vent holes which are communicated up and down, and the lower surface of the upper part 2 of the hammer body is integrally formed or welded with the lower part 3 of the hammer body; the lower part 3 of the hammer body is a small cylinder coaxial with the large cylinder, and the diameter of the lower part 3 of the hammer body is 1/5-4/5 of the diameter of the upper part 2 of the hammer body. The hammer nose is welded with the top surface of the upper part of the hammer body, and the hammer nose is welded with the top surface of the upper part of the hammer body and is reinforced by a stiffened plate. The height of the lower part of the hammer body is 0.1-1.5 m.

When the dynamic compaction device works, the dynamic compaction machine lifts the rammer to the designed height and then the rammer is unhooked and falls freely, when in ramming, the lower part 3 of the hammer body impacts the filler firstly to ensure that the filler is extruded downwards and around, because the diameter of the lower part 3 of the hammer body is smaller, the impact with larger pressure can improve the reinforcement depth, and the strong impact can also cause part of the filler to splash around, at the moment, the upper part 2 of the hammer body tamps the filler extruded around by the lower part 3 of the hammer body, and the ramming effect is improved under the double actions of the upper part 2 of the hammer body and the lower part 3 of the hammer body; meanwhile, the diameter of the upper part 2 of the hammer body is large, so that the lower end face of the hammer body can effectively prevent the filler from splashing, and the safety of personnel and equipment is guaranteed.

Claims

1. A multifunctional rammer is characterized in that: the hammer comprises a hammer nose, a hammer body upper part and a hammer body lower part, wherein the hammer nose is of an n-shaped structure, and the lower part of the hammer nose is connected to the top surface of the hammer body upper part; the upper part of the hammer body is a large cylinder which is provided with a through vent hole which is communicated up and down, and the lower surface of the upper part of the hammer body is provided with the lower part of the hammer body; the lower part of the hammer body is a small cylinder coaxial with the large cylinder, and the diameter of the lower part of the hammer body is 1/5-4/5 of the diameter of the upper part of the hammer body.

2. The multi-functional rammer of claim 1, wherein: the height of the lower part of the hammer body is 0.1-1.5 m.

3. The multi-functional rammer of claim 1, wherein: the upper part of the hammer body and the lower part of the hammer body are integrally formed.

4. The multi-functional rammer of claim 1, wherein: the upper part of the hammer body is welded with the lower part of the hammer body.

5. The multi-functional rammer of claim 1, wherein: the hammer nose is welded with the top surface of the upper part of the hammer body.

6. The multi-functional rammer of claim 5, wherein: and the hammer nose and the top surface of the upper part of the hammer body are welded with a stiffened plate.