An overlay compaction device

Abstract

The present invention provides a covering ramming device for ramming the soil in a model box. The covering ramming device includes a support assembly and a ramming assembly. The support assembly includes symmetrically arranged first slide rail brackets and second slide rail brackets. A first cantilever beam and a second cantilever beam are respectively provided on the first slide rail bracket and the second slide rail bracket. A first angle steel cross beam and a second angle steel cross beam are connected between the first cantilever beam and the second cantilever beam. The ramming assembly includes a ramming plate covering the upper layer of the soil in the model box, a first pulley and a second pulley respectively arranged on the first angle steel cross beam and the second angle steel cross beam. Cables are respectively wound around the first pulley and the second pulley. One end of each cable is connected with a telescopic ring frame. A plurality of pods are provided on the side of the telescopic ring frame facing the ramming plate. A plurality of counterweights are stacked in the pods. The technical problems in the prior art that the ramming effect of the ramming equipment is poor and the overall ramming force is difficult to control are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of geotechnical engineering foundation construction tools, and particularly relates to a covering type ramming device. Background Technique

[0002] Similar model tests are carried out on a scaled-down model to obtain relevant data, and the test object is generally an actual structure scaled down according to a ratio. In the field of geotechnical engineering technology, similar model tests have very prominent advantages in simulating the process of foundation pit excavation or underground engineering construction, and the displacement and internal force change laws of research objects such as support structures can be obtained through the test process.

[0003] Similar model tests in the field of geotechnical engineering are generally carried out in a model box. After filling a certain thickness of similar materials, it is necessary to ram to improve the density of the materials and achieve the effect of simulating the soil properties of the actual engineering site.

[0004] However, most of the ramming equipment commonly used in current projects have disadvantages such as large volume, high noise, and difficulty in accurately controlling the ramming force, so they are not suitable for indoor tests; common small ramming tools are relatively bulky, with a small single ramming area. Manual ramming tools require manual vertical lifting of heavy objects multiple times, which is time-consuming and laborious in a narrow model box. Automatic ramming tools use gasoline or diesel as fuel, which not only produces high noise but also poses a major safety hazard in the laboratory; common small electric ramming tools are difficult to control the ramming force for model tests. Generally speaking, the existing ramming equipment all has the problem that the ramming effect on the soil near the side wall of the model box edge is poor, and the overall ramming force is difficult to control, often failing to achieve the ideal effect. Summary of the Invention

[0005] Based on this, the purpose of the present invention is to provide a covering type ramming device to solve the technical problems of poor ramming effect and difficult overall control of ramming force in the existing technology.

[0006] The present invention provides a covering type ramming device for ramming the soil in a model box, and the covering type ramming device includes a support assembly and a ramming assembly;

[0007] The support assembly includes symmetrically arranged first slide rail brackets and second slide rail brackets. The first slide rail bracket and the second slide rail bracket are respectively provided with a first cantilever beam and a second cantilever beam. A first angle steel cross beam and a second angle steel cross beam are connected between the first cantilever beam and the second cantilever beam. The first cantilever beam, the second cantilever beam, the first angle steel cross beam and the second angle steel cross beam enclose a rectangular frame;

[0008] The compaction component includes a compaction plate covering the upper layer of the soil in the model box, a first pulley and a second pulley respectively arranged on the first angle steel cross beam and the second angle steel cross beam. Cables are respectively wound around the first pulley and the second pulley. One end of each cable is connected with a telescopic ring frame. A plurality of pods are arranged on one side of the telescopic ring frame facing the compaction plate. A plurality of counterweights are stacked in the pods.

[0009] In the above-mentioned covering compaction device, the compaction plate covers the surface to be compacted, effectively solving the problem that the soil at the edge of the model box cannot reach the ideal compaction effect. At the same time, the soil in the model box can be evenly compacted. Secondly, the operator can adjust the number of counterweights in the pods to control the compaction force, solving the technical problems of poor compaction effect and difficult control of the overall compaction force in the existing compaction equipment.

[0010] Further, in the covering compaction device, the first cantilever beam is slidably arranged on the first slide rail bracket. A plurality of first bolt holes are arranged on the first slide rail bracket, and the first bolt holes are spaced along the length direction of the first slide rail bracket. A first bolt is arranged on the first cantilever beam, and the first bolt can be locked in cooperation with any one of the first bolt holes to lock the first cantilever beam on the first slide rail bracket.

[0011] Further, in the covering compaction device, a plurality of second bolt holes are arranged on the first cantilever beam, and the second bolt holes are spaced along the length direction of the first cantilever beam. A second bolt is arranged on the first angle steel cross beam, and the second bolt can be locked in cooperation with any one of the second bolt holes to fixedly connect the first cantilever beam to the first angle steel cross beam.

[0012] Further, in the covering compaction device, the telescopic square frame includes 4 first telescopic tube structures. The 4 first telescopic tube structures are connected end to end to form a closed-loop square frame. A second telescopic tube structure is connected between two relatively arranged first telescopic tube structures.

[0013] Further, in the covering compaction device, the first telescopic tube structure includes a sleeve and a telescopic rod movably arranged at opposite ends of the sleeve. The first telescopic tube structure is the same as the second telescopic tube structure.

[0014] Further, in the covering compaction device, the pod includes a circular chassis, a cabin wall arranged on the circular chassis, and a cover plate arranged on the cabin wall. An opening for placing the counterweight is formed on the cabin wall.

[0015] Further, in the covering compaction device, the counterweight is in a round cake shape.

[0016] Further, for the covering ramming device, a plurality of pressure sensors are provided on a side of the ramming plate facing away from the nacelle, the pressure sensors are arranged in one-to-one correspondence with the nacelles, and the plurality of pressure sensors are electrically connected to a digital display device.

[0017] Further, for the covering ramming device, a plurality of reserved holes are provided on the ramming plate, and the reserved holes are used for the wires electrically connecting the pressure sensors and the digital display device to pass through.

[0018] Further, for the covering ramming device, casters are respectively provided at bottoms of the first slide rail bracket and the second slide rail bracket. Description of the Drawings

[0019] Figure 1 is a perspective view of the covering ramming device in the present invention;

[0020] Figure 2 is a specific structural schematic diagram of the support assembly in the present invention;

[0021] Figure 3 is a specific structural schematic diagram of the ramming assembly in the present invention;

[0022] Figure 4 is a specific structural schematic diagram of the telescopic ring frame in the present invention;

[0023] Figure 5 is a specific structural schematic diagram of the nacelle in the present invention;

[0024] Figure 6 is a structural schematic diagram of the ramming plate and the digital display device in the present invention in the first perspective state;

[0025] Figure 7 is a structural schematic diagram of the ramming plate and the digital display device in the present invention in the second perspective state;

[0026] Description of the Main Component Symbols:

[0027]

[0028]

[0029] The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings. Specific Embodiments

[0030] For ease of understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present invention more thorough and comprehensive.

[0031] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0033] It should be explained that in the indoor geotechnical similarity model test, not only the size of the structure is reduced, but also the characteristics such as material strength need to be reduced. The similar materials required for the test are the simulation of the original soil mass, so the density of the soil mass in the formation where the actual project is located also needs to be considered. In the process of transferring the prepared similar materials into the model box, ramming equipment needs to be used for ramming to achieve the effect of simulating the characteristics of the actual soil mass.

[0034] The purpose of the present invention is to solve the problems that due to the small single ramming area of common ramming devices, it is necessary to manually lift the rammer multiple times, consuming a large amount of manpower and time, and when using existing ramming tools, the soil mass at the edge of the model box cannot achieve a good ramming effect, and in addition, the upper part of the model box is prone to slight deformation, resulting in more difficult ramming of the soil mass at its edge. To solve the above technical problems, the present invention provides a covering ramming device.

[0035] Please combine Figures 1 to 7 , the covering ramming device in the present invention is used for ramming the soil mass in a model box (not shown in the figure), and the covering ramming device includes a support assembly 10 and a ramming assembly 20;

[0036] The support assembly 10 includes a first slide rail bracket 11 and a second slide rail bracket 12 which are symmetrically arranged. A first cantilever beam 13 and a second cantilever beam 14 are respectively provided on the first slide rail bracket 11 and the second slide rail bracket 12. A first angle steel cross beam 15 and a second angle steel cross beam 16 are connected between the first cantilever beam 13 and the second cantilever beam 14. The first angle steel cross beam 15 and the second angle steel cross beam 16 are respectively located on both sides of the first slide rail bracket 11. The first cantilever beam 13, the second cantilever beam 14, the first angle steel cross beam 15 and the second angle steel cross beam 16 enclose a rectangular frame;

[0037] The compaction component 20 includes a compaction plate 21 covering the upper layer of the soil mass in the model box, a first pulley 22 and a second pulley 23 respectively arranged on the first angle steel cross beam 15 and the second angle steel cross beam 16. The first pulley 22 and the second pulley 23 are symmetrically arranged. Cables are respectively wound around the first pulley 22 and the second pulley 23. One ends of the two cables are connected to both sides of the telescopic ring frame 24. A plurality of pods 25 are arranged on one side of the telescopic ring frame 24 facing the compaction plate 21. A plurality of counterweights 26 are stacked in the pods 25. The operator can adjust the number of counterweights 26 in the pods 25 to control the compaction force. In addition, in this embodiment, the operator can lift the telescopic ring frame 24 by manually pulling the end of the cable, or can also use equipment such as a motor to pull the cable.

[0038] Specifically, the first cantilever beam 13 is slidably arranged on the first slide rail bracket 11. A plurality of first bolt holes are arranged on the first slide rail bracket 11. The first bolt holes are spaced along the length direction of the first slide rail bracket 11. A first bolt is arranged on the first cantilever beam 13. The first bolt can be locked in cooperation with any one of the first bolt holes to lock the first cantilever beam 13 on the first slide rail bracket 11. In this embodiment, the structure of the second slide rail bracket 12 is the same as that of the first slide rail bracket 11. It can be understood that the operator can adjust the height of the first cantilever beam 13 according to the first bolt holes at different heights. Similarly, the second cantilever beam 14 is adaptively adjusted corresponding to the height of the first cantilever beam 13. The specific height in practical applications needs to be adjusted according to the height of the surface to be compacted in the model box.

[0039] Furthermore, a plurality of second bolt holes are arranged on the first cantilever beam 13. The second bolt holes are spaced along the length direction of the first cantilever beam 13. A second bolt is arranged on the first angle steel cross beam 15. The second bolt can be locked in cooperation with any one of the second bolt holes to fixedly connect the first cantilever beam 13 to the first angle steel cross beam 15. In this embodiment, the structure of the second cantilever beam 14 is the same as that of the first cantilever beam 13. It can be understood that the operator can adjust the distance between the first angle steel cross beam 15 and the second angle steel cross beam 16, and further adjust the positions of the first pulley 22 and the second pulley 23. In practical applications, the positions of the pulleys need to correspond to the side edges of the telescopic ring frame 24 to ensure that the cables connected to the telescopic ring frame 24 are perpendicular to it. The purpose is to enable the cables to pull the telescopic ring frame 24 to the highest point and ensure that the height of each compaction can be kept consistent.

[0040] Specifically, the telescopic square frame includes four first telescopic tube structures 241. The four first telescopic tube structures 241 are connected end to end to form a closed-loop square frame, and a second telescopic tube structure 242 is connected between two relatively arranged first telescopic tube structures 241. Among them, the first telescopic tube structure 241 includes a sleeve 2411 and telescopic rods 2412 movably arranged at opposite ends of the sleeve 2411. The first telescopic tube structure 241 is the same as the second telescopic tube structure 242.

[0041] In this embodiment, the first telescopic tube structure 241 combined with the second telescopic tube structure 242 forms a structure like the Chinese character 'Ri'. The telescopic ring frame 24 can be telescoped along the long side and the short side, and can adapt to different sizes of the surface to be tamped. The existence of the telescopic ring frame 24 also realizes the function of multi-point synchronous tamping of the surface to be tamped. The telescopic range of the telescopic ring frame 24 is 0.4 - 1.4 m.

[0042] In this embodiment, a pod 25 is buckled at each of the four corners of the square frame formed by the first telescopic tube structures 241, and a pod 25 is buckled at the center point position of the second telescopic tube structure 242, a total of five, but not limited to this. In actual application, the number and buckling position of the pods 25 can be adjusted according to the size of the surface to be tamped. The counterweight 26 is placed in the pod 25, and the counterweight can be replaced at any time according to the tamping requirements. Specifically, the pod 25 includes a circular chassis 251, a cabin wall 252 arranged on the circular chassis 251, and a cover plate 253 arranged on the cabin wall 252. An opening for placing the counterweight 26 is provided on the cabin wall 252. Among them, a sector-shaped notch corresponding to the opening is provided on the cover plate 253. The counterweight 26 is in a round cake-shaped structure. The operator can place the counterweight 26 at a certain lateral angle from the opening on the circular bottom plate of the pod 25. Since the angle of the opening is an obtuse angle, the counterweight 26 placed in the pod 25 will not slide out from the opening.

[0043] Further, a plurality of pressure sensors 31 are provided on the side of the tamping plate 21 facing away from the pod 25. The pressure sensors 31 are arranged in one-to-one correspondence with the pods 25, and the plurality of pressure sensors 31 are electrically connected to a digital display device 32. In this embodiment, the number of pressure sensors 31 is five, which are respectively arranged at the four corners and the center point of the tamping plate 21 and are all corresponding to the pods 25. Specifically, before use, the digital display device 32 is cleared first, and then when the counterweight 26 is not placed in the pod 25, the telescopic ring frame 24 is lifted to an appropriate height and then released. According to the tamping reading displayed by the digital display device 32, the counterweight 26 is added, and the tamping operation is repeated. The reading of the digital display device 32 is recorded each time of tamping, realizing the visualization of the tamping force during the tamping process and providing a guarantee for the test personnel to control the tamping effect.

[0044] It should be explained that in this embodiment, to ensure the flatness of the soil compaction in the model box, the pressure sensor 31 is specifically a thin-film pressure sensor 31. The thin-film pressure sensor 31 is adhered tightly to the contact surface between the lower side of the compaction plate 21 and the soil by double-sided tape, and then the thin-film pressure sensor 31 is sealed with transparent tape to prevent false triggering.

[0045] Furthermore, a plurality of reserved holes 40 are provided on the compaction plate 21, and the reserved holes 40 are used for the wires 33 connecting the pressure sensor 31 and the digital display device 32 to pass through. Specifically, the output wire 33 of the pressure sensor 31 is passed through the reserved hole 40 on the compaction plate 21, and the wire 33 of the pressure sensor 31 on the plate walks along the edge of the top surface of the compaction plate 21. After the compaction plate 21 is lowered into the model box, the wire 33 is connected to the digital display device 32, and the compaction plate 21 is gently pressed to observe whether there are readings on the five pressure sensors 31 on the digital display device 32. If there are readings, it indicates that the connection is normal.

[0046] Furthermore, casters 50 are respectively provided at the bottom ends of the first slide rail bracket 11 and the second slide rail bracket 12. It can be understood that before the compaction device works, the slide rail brackets need to be installed first. There are rollers at the lower ends of the slide rail brackets, which are convenient for the transportation of the whole device. When it is transported to the designated location, the roller press feet can be stepped on to lock the slide rail brackets.

[0047] In summary, for the covering type compaction device in the above embodiments of the present invention, by covering the surface to be compacted with the compaction plate, the problem that the soil at the edge of the model box cannot reach the ideal compaction effect is effectively solved, and at the same time, the soil in the model box can be evenly compacted. Secondly, the operator can adjust the number of counterweights in the suspension cabin to control the compaction force, solving the technical problems of poor compaction effect and difficult control of the overall compaction force in the existing compaction equipment.

[0048] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0049] The above-described embodiments merely represent several implementation manners of the present invention. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent for the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention shall be subject to the appended claims.

Claims

1. A covering ramming device for ramming the soil in a model box, characterized in that The covering ramming device includes a support assembly and a ramming assembly; The support assembly includes symmetrically arranged first slide rail brackets and second slide rail brackets. The first slide rail bracket and the second slide rail bracket are respectively provided with a first cantilever beam and a second cantilever beam. A first angle steel cross beam and a second angle steel cross beam are connected between the first cantilever beam and the second cantilever beam. The first cantilever beam, the second cantilever beam, the first angle steel cross beam and the second angle steel cross beam enclose a rectangular frame; The ramming assembly includes a ramming plate covering the upper layer of the soil in the model box, a first pulley and a second pulley respectively arranged on the first angle steel cross beam and the second angle steel cross beam. Cables are respectively wound around the first pulley and the second pulley. One end of the cable is connected with a telescopic ring frame. A plurality of pods are arranged on one side of the telescopic ring frame facing the ramming plate. A plurality of counterweights are stacked in the pods; The first cantilever beam is slidably arranged on the first slide rail bracket. A plurality of first bolt holes are arranged on the first slide rail bracket. The first bolt holes are spaced along the length direction of the first slide rail bracket. A first bolt is arranged on the first cantilever beam. The first bolt can be locked in cooperation with any one of the first bolt holes to lock the first cantilever beam on the first slide rail bracket; A plurality of second bolt holes are arranged on the first cantilever beam. The second bolt holes are spaced along the length direction of the first cantilever beam. A second bolt is arranged on the first angle steel cross beam. The second bolt can be locked in cooperation with any one of the second bolt holes to fixedly connect the first cantilever beam to the first angle steel cross beam.

2. The covering ramming device according to claim 1, wherein, The telescopic ring frame includes 4 first telescopic tube structures. The 4 first telescopic tube structures are connected end to end to enclose a closed-loop square frame. A second telescopic tube structure is connected between two relatively arranged first telescopic tube structures.

3. The covering ramming device according to claim 2, wherein The first telescopic tube structure includes a sleeve and telescopic rods movably arranged at opposite ends of the sleeve. The first telescopic tube structure is the same as the second telescopic tube structure.

4. The covering ramming device according to claim 1, characterized in that The pod includes a circular chassis, a cabin wall arranged on the circular chassis, and a cover plate arranged on the cabin wall. An opening for placing the counterweight is arranged on the cabin wall.

5. The covering ramming device according to claim 4, characterized in that, The counterweight is in a round cake-like structure.

6. The covering ramming device according to claim 1, wherein A plurality of pressure sensors are arranged on the side of the ramming plate facing away from the pod. The pressure sensors are arranged in one-to-one correspondence with the pods. The plurality of pressure sensors are electrically connected to a digital display device.

7. The covering ramming device according to claim 6, wherein A plurality of reserved holes are arranged on the ramming plate for the lines electrically connecting the pressure sensors and the digital display device to pass through.

8. The covering ramming device according to claim 1, wherein, Castors are respectively arranged at the bottoms of the first slide rail bracket and the second slide rail bracket.

Images