Surface vibration compactor

Abstract

The utility model discloses a surface vibration compactor, which belongs to the technical field of compactors, and comprises a box body, an inner cavity of the box body is in sliding connection with an experiment cylinder for storing an experiment soil sample, the top of the experiment cylinder is in sliding connection with a pressure plate for compacting the soil sample, and the inner cavity of the box body is in rotating connection with a turntable for pushing the pressure plate to rebound. When in use, after the turntable is rotated and the extension bending plate is utilized to push the pressure plate to move downwards, the extension bending plate and the sliding rod are staggered due to the fact that the turntable rotates all the time when the pressure plate generates elastic rebound, enough space is provided for the sliding block to move in the turntable, and counter-acting force is eliminated. And when the pressure plate rebounds, the generated reverse acting force is prevented from confronting with the motor, so that the fault probability of the motor due to long-term overlarge load is effectively reduced, and continuous and stable proceeding of an experiment is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to compaction apparatus technical field, and specifically is a surface vibration compaction apparatus. BACKGROUND

[0002] In the field of geotechnical engineering, the stability and safety of structures such as foundations, roadbeds, and dams are closely dependent on the compaction quality of the soil. To ensure construction effectiveness, the compaction characteristics parameters of the soil, especially the maximum dry density and the optimum moisture content, need to be determined through indoor tests, so as to guide the selection of on-site compaction machinery, the number of rolling passes, and the control of moisture content.

[0003] A dustproof surface vibration compaction apparatus (authorized publication number CN215640462U) is disclosed in a Chinese patent, which includes a base, a protective cover fixed on the base, a cylinder fixedly embedded on one side of the protective cover, a dust collection bag fixed on the inner wall of the cylinder, a first motor fixed on the inner wall of the cylinder through a support, a blade fixed on the rotating shaft of the first motor, a grid fixed at the end position of the cylinder, a door plate hingedly connected to the front of the protective cover, and a transparent plastic plate fixedly embedded on the door plate.

[0004] When using the above-mentioned compaction apparatus to compact soil, the pressure applied may be too large, causing the pressure plate to rebound and drive the plate frame and the teeth to move upwards, causing the teeth to drive the half gear and the output shaft of the motor to rotate in the opposite direction and form a strong confrontation with the normal driving direction of the motor, breaking the electromagnetic force balance inside the motor and generating additional electromagnetic loss. This not only instantaneously increases the working current of the motor, causing the motor to overheat, but also exacerbates the friction and wear between the output shaft and the bearing. Therefore, the utility model provides a surface vibration compaction apparatus to solve the above-mentioned problems. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a surface vibration compaction apparatus to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A surface vibration compaction apparatus includes a box body, an experimental cylinder for storing experimental soil samples is slidingly connected in the inner cavity of the box body, a pressure disc for compacting the soil sample is slidingly connected to the top of the experimental cylinder, a turntable for pushing the pressure disc to rebound is rotatably connected in the inner cavity of the box body and provides rebound space for the pressure disc through the turntable, an extension bent plate for pushing the pressure disc to move downward is fixedly installed in the inner cavity of the turntable, and an elastic structure for assisting the rebound of the pressure disc is fixedly installed in the inner cavity of the box body.

[0008] As a further scheme of the present utility model, the inner cavity of the rotating disc is slidably connected with a sliding block for driving the pressure disc to move downward, one end of the sliding block away from the rotating disc is fixedly connected with a fixed shell, the inner cavity of the fixed shell is fixedly connected with a sliding rod, and the bottom of the sliding rod is fixedly connected to the top of the pressure disc.

[0009] As a further scheme of the present utility model, the elastic structure comprises an extension rod, one side of the outer wall of the extension rod is fixedly connected to the inner cavity of the box body, one end of the extension rod close to the sliding rod is fixedly connected with a fixed sleeve for providing sliding of the sliding rod, and the sliding rod is slidably connected to the inner cavity of the fixed sleeve.

[0010] As a further scheme of the present utility model, one end of the fixed sleeve away from the extension rod is fixedly connected with an upper shell, the bottom of the upper shell is fixedly connected with a tension spring for buffering, and the tension spring offsets the reverse impact force generated when the pressure disc rebounds, the bottom of the tension spring is fixedly connected with a movable shell, and one end of the movable shell close to the sliding rod is fixedly connected to the outer wall of the fixed shell.

[0011] As a further scheme of the present utility model, the inner cavity of the box body is provided with a sliding groove for providing sliding of the experimental cylinder, the inner cavity of the sliding groove is slidably connected with a trapezoidal plug, the sliding groove and the trapezoidal plug are both provided with two, and the two trapezoidal plugs are both fixedly connected to the bottom of the experimental cylinder.

[0012] As a further scheme of the present utility model, the inner cavity of the box body is provided with a support shell, the inner cavity of the support shell is fixedly connected with a hydraulic damping cylinder for buffering vibration, and the outer wall of the hydraulic damping cylinder is fixedly connected with a damping spring for assisting absorption of high-frequency vibration.

[0013] Compared with the prior art, the present utility model has the beneficial effects that:

[0014] When the present utility model is used, the pressure disc is pushed downward by the extension bent plate through rotating the rotating disc, the rotating disc is always rotating when the pressure disc rebounds due to the applied pressure, the extension bent plate and the sliding rod are staggered, enough space is provided for the sliding block to move inside the rotating disc, the reaction force is eliminated, the reverse force generated when the pressure disc rebounds does not oppose the motor, the probability of failure of the motor due to long-term excessive load is effectively reduced, the continuous and stable performance of the experiment is ensured, and the rebound process of the pressure disc is more stable due to the deformation of the tension spring after being extruded, which absorbs part of the instantaneous impact force generated by the pressure disc in high-frequency vibration and reciprocating motion. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of a surface vibration compactor.

[0016] Figure 2It is a structural schematic view of a pressing disc in a surface vibration compactor.

[0017] Figure 3 It is a structural schematic view of a sliding block in a surface vibration compactor.

[0018] Figure 4 It is a structural schematic view of a damping spring in a surface vibration compactor.

[0019] In the figure: 1, box door; 2, box body; 3, experimental cylinder; 4, pressing disc; 5, rotating disc; 6, extension bending plate; 7, elastic structure; 101, trapezoidal plug-in block; 102, sliding groove; 104, supporting shell; 106, damping spring; 107, hydraulic damping cylinder; 501, sliding block; 502, fixed shell; 503, sliding rod; 504, motor; 701, extension rod; 702, fixed sleeve; 703, upper shell; 704, tension spring; 705, movable shell. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0021] Please refer to Figures 1-4 In the embodiments of the present application, a surface vibration compactor comprises a box body 2, a box door 1 is arranged in the inner cavity of the box body 2, an experimental cylinder 3 for storing experimental soil samples is slidably connected in the inner cavity of the box body 2, a pressing disc 4 for compacting soil samples is slidably connected to the top of the experimental cylinder 3, a rotating disc 5 for rebounding the pressing disc 4 is rotatably connected in the inner cavity of the box body 2, and the rotating disc 5 provides rebounding space for the pressing disc 4, an extension bending plate 6 for pushing the pressing disc 4 to move downward is fixedly installed in the inner cavity of the rotating disc 5, and an elastic structure 7 for assisting the rebounding of the pressing disc 4 is fixedly installed in the inner cavity of the box body 2.

[0022] In the embodiments, the outer wall diameter of the pressing disc 4 is the same as the inner diameter of the experimental cylinder 3, and the adhesion of the pressing disc 4 and the experimental cylinder 3 is increased, so that when the pressing disc 4 moves downward, the pressure can uniformly act on each part of the surface of the soil sample, the consistency of the compactness of the entire soil sample cross section is ensured, the systematic error of experimental data is reduced, the impact force is absorbed by the deformation of the elastic structure 7, the pressing disc 4 rebounding upward is pushed to move downward, and preparation is made for the next compaction cycle.

[0023] Please refer to Figures 1-3The inner cavity of the rotating disc 5 is slidingly connected with a sliding block 501 for driving the pressure disc 4 to move downward, the end of the sliding block 501 away from the rotating disc 5 is fixedly connected with a fixed shell 502, the inner cavity of the fixed shell 502 is fixedly connected with a sliding rod 503, and the bottom of the sliding rod 503 is fixedly connected to the top of the pressure disc 4;

[0024] In the embodiment, the outer wall of the box 2 is fixedly connected with a motor 504 for driving the rotating disc 5 to rotate, the output shaft of the motor 504 penetrates the box 2 and is connected to the outer wall of the rotating disc 5, and the connection point is offset from the center position of the rotating disc 5, so that the output shaft of the driving motor 504 drives the rotating disc 5 to rotate eccentrically, the sliding block 501 follows the rotation of the rotating disc 5 and slides up and down in the inner cavity of the rotating disc 5, and the fixed shell 502 and the sliding rod 503 push the pressure disc 4 to move up and down, so as to compact the experimental soil sample. At the same time, the periodic centrifugal force generated by the eccentric rotation is converted into high-frequency vibration and transmitted to the contact surface between the pressure disc 4 and the soil sample through the sliding rod 503, so that the soil particles are in a high-frequency dynamic motion state, the static friction and cohesion between the soil particles are reduced, the small particles quickly fill the gap between the large particles, and the compactness of the soil sample is improved.

[0025] Please refer to Figures 1-3 The elastic structure 7 includes an extension rod 701, one side of the outer wall of the extension rod 701 is fixedly connected in the inner cavity of the box 2, and the end of the extension rod 701 close to the sliding rod 503 is fixedly connected with a fixed sleeve 702 for providing sliding of the sliding rod 503, and the sliding rod 503 is slidingly connected in the inner cavity of the fixed sleeve 702.

[0026] In the embodiment, the fixed sleeve 702 is arranged to limit the sliding rod 503, so that the sliding rod 503 does not deviate laterally during the up-down movement and always moves stably in the vertical direction, so that the compaction action of the pressure disc 4 is more accurate, the inclination of the pressure disc 4 caused by the inclination of the sliding rod 503 is avoided, and the uniform stress of the soil sample is ensured.

[0027] Please refer to Figures 1-3 The end of the fixed sleeve 702 away from the extension rod 701 is fixedly connected with an upper shell 703, the bottom of the upper shell 703 is fixedly connected with a tension spring 704 for buffering, the tension spring 704 offsets the reverse impact force generated when the pressure disc 4 rebounds, the bottom of the tension spring 704 is fixedly connected with a movable shell 705, and the end of the movable shell 705 close to the sliding rod 503 is fixedly connected to the outer wall of the fixed shell 502.

[0028] In this embodiment, the tensile spring 704 can absorb part of the instantaneous impact force generated by the pressure plate 4 in high-frequency vibration and reciprocating motion through its own tensile deformation, effectively enhancing the stability of the device operation, avoiding the impact force without buffering, directly transmitted to the rotating disc 5 and the motor 504 through the sliding rod 503 and the sliding block 501, causing the output shaft of the motor 504 to bend, the internal bearing to wear out, and the problem of the motor 504 to continuously bear high-frequency and high-strength reverse load, thereby continuously ensuring the operation accuracy of the motor 504, effectively prolonging its service life, and ensuring that it can stably output power to drive the rotating disc 5 to rotate.

[0029] Please refer to Figures 1-2 The inner cavity of the box body 2 is provided with a sliding groove 102 for providing sliding of the experimental cylinder 3, and the inner cavity of the sliding groove 102 is slidably connected with a trapezoidal block 101.

[0030] In this embodiment, the trapezoidal block 101 is used to limit the experimental cylinder 3, so that the experimental cylinder 3 does not tilt due to vibration or uneven force.

[0031] Please refer to Figure 1 and Figure 4 The inner cavity of the box body 2 is provided with a support shell 104, and the inner cavity of the support shell 104 is fixedly connected with a hydraulic damping cylinder 107 for buffering vibration of the device.

[0032] In this embodiment, the hydraulic damping cylinder 107 can absorb low-frequency and large-amplitude vibration generated during operation of the device by using the throttling effect of the liquid in the cylinder, avoiding transmission of vibration to the placement surface or causing resonance of the device.

[0033] The working principle of the utility model is:

[0034] The utility model discloses a soil sample compaction device, which comprises a box body 2, a box door 1, a rotating disc 5, a slide block 501, a fixed shell 502, a slide rod 503, a compression disc 4, a driving motor 504, an extension bent plate 6, a slide groove 102, a trapezoidal insert block 101 and a test cylinder 3.

[0035] Meanwhile, during the compaction process, after the compression disc 4 compacts the soil, the compression disc 4 rebounds due to the reaction force generated by the large applied pressure. Since the rotating disc 5 is rotating at all times, the slide block 501 moves upward with the compression disc 4 when it rebounds. At this time, the slide block 501 and the extension bent plate 6 are misaligned, and the slide block 501 has enough space to rebound inside the rotating disc 5. Meanwhile, the tensile spring 704 is compressed and can absorb part of the instantaneous impact force generated by the compression disc 4 during high-frequency vibration and reciprocating motion. Then, the tensile spring 704 releases the elastic potential energy again. The movable shell 705 pushes the compression disc 4 downward through the fixed shell 502 and the slide rod 503 to start the next cycle of compaction. In this way, the compaction process is completed. After compaction, the test cylinder 3 is removed by sliding to detect the relevant performance of the soil, such as the maximum dry density, water content and other parameters, to provide data support for engineering design and construction.

[0036] The above is only a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this. Any person skilled in the art can make equivalent substitutions or changes to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, and all of them should be covered within the protection scope of the utility model.

Claims

1. A surface vibration compactor, comprising a housing (2), characterized in that, The inner cavity of the box (2) is slidably connected to an experimental cylinder (3) for storing experimental soil samples. The top of the experimental cylinder (3) is slidably connected to a pressure plate (4) for compacting the soil samples. The inner cavity of the box (2) is rotatably connected to a turntable (5) for pushing the pressure plate (4) to rebound, and the turntable (5) provides rebound space for the pressure plate (4). The inner cavity of the turntable (5) is fixedly installed with an extension curved plate (6) for pushing the pressure plate (4) to move down. The inner cavity of the box (2) is fixedly installed with an elastic structure (7) for pushing the pressure plate (4) to assist in rebound.

2. The surface vibration compactor according to claim 1, characterized in that, The inner cavity of the turntable (5) is slidably connected to a sliding block (501) for driving the pressure plate (4) to move downward. The end of the sliding block (501) away from the turntable (5) is fixedly connected to a fixed shell (502). The inner cavity of the fixed shell (502) is fixedly connected to a sliding rod (503). The bottom of the sliding rod (503) is fixedly connected to the top of the pressure plate (4).

3. A surface vibration compactor according to claim 2, characterized in that, The elastic structure (7) includes an extension rod (701), one side of the outer wall of the extension rod (701) is fixedly connected to the inner cavity of the box (2), and one end of the extension rod (701) near the sliding rod (503) is fixedly connected to a fixing sleeve (702) for providing sliding of the sliding rod (503), and the sliding rod (503) is slidably connected to the inner cavity of the fixing sleeve (702).

4. A surface vibration compactor according to claim 3, characterized in that, The fixed sleeve (702) is fixedly connected to an upper shell (703) at the end away from the extension rod (701). The bottom of the upper shell (703) is fixedly connected to a tension spring (704) for buffering, and the tension spring (704) counteracts the reverse impact force generated when the pressure plate (4) rebounds. The bottom of the tension spring (704) is fixedly connected to a movable shell (705). The end of the movable shell (705) near the sliding rod (503) is fixedly connected to the outer wall of the fixed shell (502).

5. A surface vibration compactor according to claim 1, characterized in that, The inner cavity of the box (2) is provided with a slide groove (102) for providing sliding space for the experimental tube (3). A trapezoidal plug (101) is slidably connected to the inner cavity of the slide groove (102). There are two slide grooves (102) and two trapezoidal plugs (101), and both trapezoidal plugs (101) are fixedly connected to the bottom of the experimental tube (3).

6. A surface vibration compactor according to claim 1, characterized in that, The bottom of the inner cavity of the box (2) is provided with a support shell (104), and a hydraulic damping cylinder (107) for buffering vibration is fixedly connected to the inner cavity of the support shell (104). A damping spring (106) for assisting in absorbing high-frequency vibration is fixedly connected to the outer wall of the hydraulic damping cylinder (107).

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