A solidified soil test forming device and method

Abstract

The invention discloses a solidified soil test forming device and method, comprising a base, a power system and a workpiece clamping mechanism, the power system comprising a motor, a reducer, a camshaft and a cam, the motor drives the reducer, and the reducer drives the camshaft and the cam to operate; the workpiece clamping mechanism comprises a workpiece mounting plate, a mudguard, a solidified soil mold, a hinge, a movable pressure plate, and a limiting pressure rod, the workpiece mounting plate is mounted on the base through a vertical guide mechanism, and the solidified soil mold is placed on the workpiece mounting plate; the hinge is welded to the workpiece mounting plate through a bracket, and the limiting pressure rod is arranged on the other side of the workpiece mounting plate; the movable pressure plate is located above the solidified soil mold, one side of which is connected to the hinge, and the other side is provided with a pin hole; a pin is welded on the limiting pressure rod, and a spring for providing downward elastic force for the limiting pressure rod is also arranged on the limiting pressure rod, and the pin is inserted into the pin hole on the movable pressure plate to fix the movable pressure plate, so that the solidified soil mold remains in a compressed state during vibration.

Description

Technical Field

[0001] The invention belongs to the field of geotechnical tests, and in particular relates to a solidified soil test molding device and method. Background Art

[0002] Solidified soil is made by mixing cement and other solidifying materials with soil in appropriate proportions and hardening them. With the extensive application of technologies such as cement mixing piles, and my country's emphasis on the construction of natural environment and ecological civilization, more and more projects are solidifying and reusing abandoned soil to replace raw materials such as sand, gravel and hillside soil, and the corresponding solidified soil tests are increasing. Solidified soil mixtures have the characteristics of poor fluidity, high plasticity and high viscosity. The conventional molding method of solidified soil mix test specimens is to pour the mixed solidified soil mixture into the test mold in layers. Each layer needs to be manually shaken multiple times to remove the holes in the specimen. The test efficiency is low and the labor intensity is high. It is contrary to the development trend of automation and intelligence in the civil engineering industry and is in urgent need of improvement. Summary of the invention

[0003] Aiming at the problems existing in the molding process of the test specimen of the solidified soil mix ratio test and the characteristics of the solidified soil admixture, the present invention provides a new solidified soil test molding device and method.

[0004] The present invention is achieved through the following technical solutions:

[0005] A solidified soil test molding device comprises a base, a power system and a workpiece clamping mechanism.

[0006] The base comprises a frame having a lower mounting surface and an upper mounting surface;

[0007] The power system includes a motor, a reducer, a V-belt, a driving pulley, a passive pulley, a sprocket driving wheel, a sprocket passive wheel, a chain, a camshaft and a cam, wherein the motor is fixed on the lower mounting surface, and the output shaft of the motor is connected to the driving pulley; the reducer is fixed on the lower mounting surface, the input shaft of the reducer is connected to the passive pulley, and the output shaft is connected to the sprocket driving wheel; the driving pulley and the passive pulley are connected by a V-belt, so that the motor drives the reducer; the sprocket passive wheel is fixedly mounted on the camshaft, and both ends of the camshaft are mounted on the bearing seat through bearings, and the bearing seat is fixed on the upper mounting surface, and the sprocket driving wheel and the sprocket passive wheel are connected by a chain, so that the reducer drives the camshaft to operate; the cam is fixedly mounted on the camshaft, and the camshaft will synchronously drive the cam to operate;

[0008] The workpiece clamping mechanism includes a workpiece mounting plate, a mudguard, a solidified soil mold, a hinge, a movable pressure plate, a limit pressure rod, and a pin. The workpiece mounting plate is mounted on the upper mounting surface of the base through a vertical guide mechanism, and the vertical guide mechanism enables the workpiece mounting plate to have the ability to move vertically up and down; the mudguard is mounted around the workpiece mounting plate, and a square notch is reserved in the middle position of the mudguards on both sides of the opposite sides for installing the hinge and the limit pressure rod, and the solidified soil mold is placed on the workpiece mounting plate and is located in the space surrounded by the mudguard; The hinge is welded to a reserved notch on one side of the fender on the workpiece mounting plate through a bracket, and the limiting pressure rod is arranged at a reserved notch on the other side of the fender on the workpiece mounting plate; the movable pressure plate is located above the solidified soil mold, one side of the movable pressure plate is connected to the hinge, and the other side is provided with a pin hole; a pin is welded on the limiting pressure rod, and a spring for providing downward elastic force therefor is also arranged on the limiting pressure rod, and the pin can be inserted into the pin hole on the movable pressure plate to fix the movable pressure plate, and under the elastic force of the spring, the solidified soil mold is kept in a compressed state during the vibration process.

[0009] In the above technical solution, the driving pulley and the driven pulley are both A-type double-groove pulleys, and the center lines of the grooves of the two pulleys are aligned.

[0010] In the above technical solution, the cam is an involute cam, there are two cams, the sprocket driven wheel is fixedly installed in the middle position of the camshaft, and the two cams are symmetrically installed on the camshaft with the sprocket driven wheel as the center.

[0011] In the above technical solution, the vertical guiding mechanism includes a guide column and an outer sleeve cooperating with the guide column. The number of guide columns is 4, which are vertically welded on the upper mounting surface of the base. The 4 guide columns are distributed in a rectangular shape. The number of outer sleeves is 4, which are vertically welded on the bottom of the workpiece mounting plate. The inner diameter of the outer sleeve is 1 to 3 mm larger than that of the guide column, and the length is 10 to 30 mm smaller than that of the guide column. The position of the outer sleeve corresponds to the guide column, and the outer sleeve is respectively mounted on the corresponding guide column.

[0012] In the above technical solution, the upper edge of the mudguard is 70 to 80 mm higher than the workpiece mounting plate.

[0013] In the above technical solution, the pin is L-shaped, one end of the pin is welded to the limiting pressure rod, and the other end is vertically arranged downward and can be inserted into the pin hole on the movable pressure plate.

[0014] In the above technical scheme, one side of the installation limit pressure rod of the workpiece mounting plate has a protrusion, and the protrusion is provided with a through hole, and the limit pressure rod is vertically inserted in the through hole, and the top end of the limit pressure rod is provided with a larger nut to facilitate lifting the limit pressure rod, and the bottom end of the limit pressure rod is provided with a limit nut; there are two springs, one of which is a compression spring, which is arranged on the limit pressure rod section between the limit nut and the protrusion, and the other is a tension spring, which is arranged on the limit pressure rod section between the protrusion and the pin, and the top end of the tension spring is fixed to the limit pressure rod, and the bottom end is fixed to the protrusion, so that both springs can provide downward force for the limit pressure rod.

[0015] In the above technical solution, multiple solidified soil molds are placed on the workpiece mounting plate at the same time. A single solidified soil mold is long and has multiple box bodies distributed along its length. Multiple solidified soil molds are placed side by side on the workpiece mounting plate. The solidified soil molds are perpendicular to the movable pressing plate, so that one movable pressing plate can press and fix all the solidified soil molds.

[0016] In the above technical solution, the motor is a 0.75kW three-phase asynchronous motor.

[0017] In the above technical solution, the reducer is a type 80 vertical speed-changing reducer.

[0018] In the above technical solution, the sprocket driving wheel has 14 teeth, and the sprocket driven wheel has 13 teeth.

[0019] The specific test steps of a solidified soil test molding device and method of the present invention are as follows:

[0020] (1) Fixing the solidified soil mold: pull the limit pressure rod, pull out the pin, open the movable pressure plate, place the solidified soil mold on the workpiece mounting plate, then lower the movable pressure plate, lower the limit pressure rod, insert the pin, and fix the solidified soil mold;

[0021] (2) Preparation of solidified soil mixture: Mix soil, water and solidifying materials evenly according to the test plan;

[0022] (3) Solidified soil molding: Turn on the motor power supply, the solidified soil mold starts to vibrate up and down, and the solidified soil mixture is evenly filled into the solidified soil mold in 3-5 times according to a certain sequence. Each filling is shaken before the next filling. The height of the mixture after the last filling should be slightly higher than the solidified soil mold;

[0023] (4) Lift the limit pressure rod, pull out the pin, open the movable pressure plate, take out the solidified soil mold, smooth the surface of the solidified soil, and put the solidified soil together with the solidified soil mold into the curing room for curing.

[0024] The advantages and beneficial effects of the present invention are:

[0025] The present invention uses mechanical vibration instead of manual shaking, fixes multiple solidified soil molds in a solidified soil test molding device and shakes them simultaneously, and can simultaneously mold multiple solidified soil samples. The present invention greatly improves test efficiency, reduces labor intensity, saves manpower, is simple to operate, and produces stable and reliable results. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the present invention (the fender is cut away).

[0027] Figure 2 It is an internal parts diagram of the present invention.

[0028] Figure 3 It is an assembly schematic diagram of the present invention.

[0029] Among them: 1 is square tube steel, 2 is steel plate, 3 is guide column, 4 is outer sleeve, 5 is motor, 6 is reducer, 7 is passive pulley, 8 is active pulley, 9 is bearing seat, 10 is sprocket active wheel, 11 is sprocket passive wheel, 12 is cam, 13 is chain, 14 is V-belt, 15 is workpiece mounting plate, 16 is spring, 17 is channel steel, 18 is hinge, 19 is camshaft, 20 is limit pressure rod, 21 is movable pressure plate, 22 is solidified soil mold, 23 is pin, 24 is bearing, 25 is fender.

[0030] For ordinary technicians in this field, other relevant drawings can be obtained based on the above drawings without any creative work.

[0031] Specific test methods

[0032] The technical solution of the present invention is further described below in conjunction with specific embodiments.

[0033] See attached Figure 1-3 , a solidified soil test molding device, including a base, a power system and a workpiece clamping mechanism.

[0034] The base includes a frame welded from multiple 40-60 mm square tube steels 1 (specifically, including 4 columns, 4 lower beams and 2 upper beams), the frame having a lower mounting surface and an upper mounting surface. Specifically, the lower mounting surface is welded to the frame using 5-10 channel steel 17, and the upper mounting surface is welded to the frame using a rectangular steel plate 2 with a thickness of 10-20 mm.

[0035] The power system includes a motor 5, a reducer 6, a V-belt 14, a driving pulley 8, a driven pulley 7, a sprocket driving wheel 10, a sprocket driven wheel 11, a chain 13, a camshaft 19, a cam 12, a bearing 24 and a bearing seat 9. The motor 5 is a 0.75kW three-phase asynchronous motor, which is fastened to the lower mounting surface by bolts, and the output shaft of the motor is connected to the driving pulley 8; the reducer 6 is an 80-type vertical speed reducer, which is fastened to the lower mounting surface by bolts, the input shaft of the reducer 6 is connected to the driven pulley 7, and the output shaft is connected to the sprocket driving wheel 10; the driving pulley 8 and the driven pulley 7 are both A-type double-groove wheels, the driving pulley 8 has a diameter of 120mm, and the driven pulley 7 has a diameter of 70mm, the center lines of the grooves of the two pulleys are aligned, the driving pulley 8 and the driven pulley 7 are connected by a V-belt 14, so that the motor 5 drives the reducer 6; the sprocket driving wheel 10 has 14 teeth, the sprocket driven wheel 11 has 13 teeth, and the sprocket driven wheel 11 has 13 teeth. It is fixedly installed on the camshaft 19, and both ends of the camshaft 19 are installed on the bearing seat 9 through bearings 24. The bearing seat 9 is fastened and installed on the upper mounting surface with bolts. The sprocket driving wheel 10 and the sprocket driven wheel 11 are connected by a chain 13, so that the reducer 6 drives the camshaft 19 to operate; the cam 12 is fixedly installed on the camshaft 19, and the camshaft 19 will synchronously drive the cam 12 to operate.

[0036] Furthermore, the cam 12 is an involute cam, there are two cams 12, the sprocket driven wheel 11 is fixedly installed in the middle position of the camshaft 19, and the two cams are symmetrically installed on the camshaft 19 with the sprocket driven wheel 11 as the center.

[0037] The workpiece clamping mechanism includes a workpiece mounting plate 15, a mudguard 25, a solidified soil mold 22, a hinge 18, a movable pressure plate 21, a limit pressure rod 20, and a pin 23. The workpiece mounting plate 15 is mounted on the upper mounting surface of the base through a vertical guide mechanism. The vertical guide mechanism can enable the workpiece mounting plate 15 to have the ability to move vertically up and down; the vertical guide mechanism includes a guide column 3 and an outer sleeve 4 matched with the guide column. The number of guide columns 3 is 4, which are vertically welded on the upper mounting surface of the base. The 4 guide columns are distributed in a rectangular shape. The number of outer sleeves 4 is 4, which are vertically welded on the bottom of the workpiece mounting plate. The inner diameter of the outer sleeve 4 is 1 to 3 mm larger than that of the guide column 3, and the length is 10 to 30 mm smaller than that of the guide column 3. The position of the outer sleeve 4 corresponds to the guide column 3 and is respectively sleeved on the corresponding guide column 3; the mudguard 25 is made of sheet metal stainless steel, fastened to the four sides of the workpiece mounting plate 15 with bolts, and a square notch is reserved in the middle position of the mudguards 25 on both sides for installing the hinge 1 8 and a limiting pressure rod 20, the upper edge of the mudguard 25 is 70 to 80 mm higher than the workpiece mounting plate 15; the solidified soil mold 22 is placed on the workpiece mounting plate and is located in the space surrounded by the mudguard; the hinge 18 is welded to the reserved notch of the mudguard 25 on the workpiece mounting plate 15 through a bracket a (that is, the bottom end of the bracket a is welded to the workpiece mounting plate 15, and the top end of the bracket a is welded to one of the pages of the hinge 18), and the limiting pressure rod 20 is set on the workpiece mounting plate 15 A notch is reserved in the mudguard 25 on the other side; the movable pressure plate 21 is located above the solidified soil mold 22, one side of the movable pressure plate 21 is connected to the hinge 18, and the other side is provided with a pin hole; a pin 23 is welded on the limiting pressure rod 20, and a spring 16 for providing a downward elastic force therefor is also provided on the limiting pressure rod 20. The pin 23 can be inserted into the pin hole on the movable pressure plate 21 to fix the movable pressure plate 21. Under the elastic force of the spring 16, the solidified soil mold 22 remains in a compressed state during the vibration process.

[0038] Furthermore, the pin 23 is L-shaped, one end of the pin 23 is welded to the limiting pressure rod 20 , and the other end is vertically arranged downward and can be inserted into the pin hole on the movable pressure plate 21 .

[0039] Furthermore, one side of the workpiece mounting plate 15 for installing the limiting pressure rod 20 has a protrusion b, and the protrusion is provided with a through hole, and the limiting pressure rod 20 is vertically inserted in the through hole, and the top of the limiting pressure rod 20 has a larger nut 20-1, which is convenient for lifting the limiting pressure rod 20, and the bottom end of the limiting pressure rod 20 has a limiting nut 20-2. The number of springs is preferably two, one of which is a compression spring 16-1, which is arranged on the rod section of the limiting pressure rod 20 between the limiting nut 20-2 and the protrusion b, and the other is a tension spring 16-2, which is arranged on the rod section of the limiting pressure rod 20 between the protrusion b and the pin 23, and the top end of the tension spring is fixed (welded) to the limiting pressure rod 20, and the bottom end is fixed (welded) to the protrusion, so that both springs can provide downward force for the limiting pressure rod 20.

[0040] Furthermore, a plurality of solidified soil molds 22 are placed on the workpiece mounting plate 15 at the same time. A single solidified soil mold 22 is long and has a plurality of box bodies distributed along its length. The plurality of solidified soil molds 22 are placed side by side on the workpiece mounting plate 15. The solidified soil molds 22 are perpendicular to the movable pressing plate 21, so that one movable pressing plate 21 can press and fix all the solidified soil molds 22.

[0041] The specific test steps of a solidified soil test molding device and method of the present invention are as follows:

[0042] (5) Fixing the solidified soil mold 22: Pull the limit pressure rod 20, pull out the pin 23, open the movable pressure plate 21, place the solidified soil mold 22 on the workpiece mounting plate 15, then lower the movable pressure plate 21, lift the limit pressure rod 20, insert the pin 23, and fix the solidified soil mold 22;

[0043] (6) Preparation of solidified soil mixture: Mix soil, water and solidifying materials evenly according to the test plan;

[0044] (7) Solidified soil molding: Turn on the power of the motor 5, and the solidified soil mold 22 starts to vibrate up and down. The solidified soil mixture is evenly filled into the solidified soil mold 22 in 3-5 times according to a certain sequence. Each filling is shaken before the next filling. The height of the mixture after the last filling should be slightly higher than the solidified soil mold 22;

[0045] (8) Lift the limit pressure rod 20, pull out the pin 23, open the movable pressure plate 21, take out the solidified soil mold 22, smooth the surface of the solidified soil, and put the solidified soil together with the solidified soil mold 22 into the curing room for curing.

[0046] For ease of explanation, spatial relative terms such as "upper", "lower", "left", "right" and the like are used in the embodiments to illustrate the relationship of one element or feature shown in the figure relative to another element or feature. It should be understood that, in addition to the orientation shown in the figure, the spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figure is inverted, the element described as being "under" other elements or features will be positioned "on" other elements or features. Therefore, the exemplary term "under" can include both upper and lower orientations. The device can be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used here can be interpreted accordingly.

[0047] The present invention is described above by way of example. It should be noted that, without departing from the core of the present invention, any simple deformation, modification or other equivalent replacement that can be made by those skilled in the art without inventive effort falls within the protection scope of the present invention.

Claims

1. A solidified soil test molding device, characterized in that: Including base, power system and workpiece clamping mechanism, The base comprises a frame having a lower mounting surface and an upper mounting surface; The power system includes a motor, a reducer, a V-belt, a driving pulley, a passive pulley, a sprocket driving wheel, a sprocket passive wheel, a chain, a camshaft and a cam, wherein the motor is fixed on the lower mounting surface, and the output shaft of the motor is connected to the driving pulley; the reducer is fixed on the lower mounting surface, the input shaft of the reducer is connected to the passive pulley, and the output shaft is connected to the sprocket driving wheel; the driving pulley and the passive pulley are connected by a V-belt, so that the motor drives the reducer; the sprocket passive wheel is fixedly mounted on the camshaft, and both ends of the camshaft are mounted on the bearing seat through bearings, and the bearing seat is fixed on the upper mounting surface, and the sprocket driving wheel and the sprocket passive wheel are connected by a chain, so that the reducer drives the camshaft to operate; the cam is fixedly mounted on the camshaft, and the camshaft will synchronously drive the cam to operate; The workpiece clamping mechanism includes a workpiece mounting plate, a mudguard, a solidified soil mold, a hinge, a movable pressure plate, a limit pressure rod, and a pin. The workpiece mounting plate is mounted on the upper mounting surface of the base through a vertical guide mechanism, and the vertical guide mechanism enables the workpiece mounting plate to have the ability to move vertically up and down; the mudguard is mounted around the workpiece mounting plate, and a square notch is reserved in the middle position of the mudguards on both sides of the opposite sides for installing the hinge and the limit pressure rod, and the solidified soil mold is placed on the workpiece mounting plate and is located in the space surrounded by the mudguard; The hinge is welded to a reserved notch of a fender on one side of the workpiece mounting plate through a bracket, and the limit pressure rod is arranged at a reserved notch of a fender on the other side of the workpiece mounting plate; the movable pressure plate is located above the solidified soil mold, one side of the movable pressure plate is connected to the hinge, and the other side is provided with a pin hole; a pin is welded to the limit pressure rod, and a spring for providing downward elastic force to the limit pressure rod is also arranged on the limit pressure rod, and the pin can be inserted into the pin hole on the movable pressure plate to fix the movable pressure plate, so that the solidified soil mold is kept in a compressed state during the vibration process under the elastic force of the spring; A projection is provided on one side of the installation limit pressure rod of the workpiece mounting plate, a through hole is provided on the projection, the limit pressure rod is vertically inserted in the through hole, a larger nut is provided at the top end of the limit pressure rod to facilitate lifting the limit pressure rod, and a limit nut is provided at the bottom end of the limit pressure rod; there are two springs, one of which is a compression spring, which is arranged on the limit pressure rod section between the limit nut and the projection, and the other is a tension spring, which is arranged on the limit pressure rod section between the projection and the pin, and the top end of the tension spring is fixed to the limit pressure rod, and the bottom end is fixed to the projection, so that both springs can provide downward force for the limit pressure rod; A plurality of solidified soil molds are placed on the workpiece mounting plate at the same time. A single solidified soil mold is a long strip, and has a plurality of box bodies distributed along its length. The plurality of solidified soil molds are placed side by side on the workpiece mounting plate. The solidified soil molds are perpendicular to the movable pressing plate, so that one movable pressing plate can press and fix all the solidified soil molds. The method for using the solidified soil test molding device comprises the following steps: Fix the solidified soil mold: pull the limit pressure rod, pull out the pin, open the movable pressure plate, place the solidified soil mold on the workpiece mounting plate, then lower the movable pressure plate, lower the limit pressure rod, insert the pin, and fix the solidified soil mold; Prepare the solidified soil mixture: mix the soil, water and solidifying materials evenly according to the test plan; Solidified soil molding: Turn on the motor power supply, the solidified soil mold starts to vibrate up and down, and fill the solidified soil mixture evenly in the solidified soil mold in 3-5 times according to a certain order. Each filling is shaken before the next filling. The height of the mixture after the last filling should be slightly higher than the solidified soil mold; Lift the limit pressure rod, pull out the pin, open the movable pressure plate, take out the solidified soil mold, smooth the surface of the solidified soil, and put the solidified soil together with the solidified soil mold into the curing room for curing.

2. The solidified soil test molding device according to claim 1, characterized in that: The driving pulley and the driven pulley are both A-type double-groove pulleys, and the center lines of the grooves of the two pulleys are aligned.

3. The solidified soil test molding device according to claim 1, characterized in that: The cam is an involute cam, there are two cams, the sprocket driven wheel is fixedly installed at the middle position of the camshaft, and the two cams are symmetrically installed on the camshaft with the sprocket driven wheel as the center.

4. The solidified soil test molding device according to claim 1, characterized in that: The vertical guiding mechanism includes a guide column and an outer sleeve cooperating with the guide column. There are 4 guide columns, which are vertically welded on the upper mounting surface of the base. The 4 guide columns are distributed in a rectangular shape. There are 4 outer sleeves, which are vertically welded on the bottom of the workpiece mounting plate. The inner diameter of the outer sleeve is 1-3 mm larger than that of the guide column, and the length is 10-30 mm smaller than that of the guide column. The position of the outer sleeve corresponds to the guide column, and the outer sleeve is respectively mounted on the corresponding guide column.

5. The solidified soil test molding device according to claim 1, characterized in that: The pin is L-shaped, one end of the pin is welded to the limiting pressure rod, and the other end is arranged vertically downward and can be inserted into the pin hole on the movable pressure plate.

6. The solidified soil test molding device according to claim 1, characterized in that: The motor is a 0.75kW three-phase asynchronous motor.

7. The solidified soil test molding device according to claim 1, characterized in that: The reducer is a 80-type vertical speed-changing reducer.

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