CN211179353U - Full-automatic quadruple strain control type direct shear apparatus - Google Patents
Full-automatic quadruple strain control type direct shear apparatus Download PDFInfo
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- CN211179353U CN211179353U CN201921391912.0U CN201921391912U CN211179353U CN 211179353 U CN211179353 U CN 211179353U CN 201921391912 U CN201921391912 U CN 201921391912U CN 211179353 U CN211179353 U CN 211179353U
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Abstract
The utility model discloses a full-automatic quadruple strain control type direct shear apparatus, which comprises a stand column, wherein the top end of the stand column is fixed with two end bolts of a cross beam, and the bottom end of the stand column is arranged on a workbench in a sliding way through a sliding mechanism; the pressurizing stepping motor is fixed at the top of the cross beam, the ball screw is positioned at the bottom of the cross beam, one end of the ball screw penetrates through the cross beam and is fixedly connected with the pressurizing stepping motor, and the other end of the ball screw is in threaded connection with the linkage mechanism; the guide posts are symmetrically distributed by taking the ball screw as a center, the top ends of the guide posts are vertically fixed on the cross beam, the linkage mechanism is sleeved on the guide posts, and the sensor is fixed at the bottom end of the linkage mechanism and is collinear with the center of the ball screw. The utility model adopts the electromechanical integration design, and realizes the automatic pressurization and the force measurement through the design of the pressurization stepping motor, the ball screw and the pressure sensor; the high-precision bidirectional ball slide rail is adopted in the horizontal direction to perform relative motion of shearing force, the sensitivity is high, the resistance is small, the friction coefficient is reduced, and the linearity and the translation performance of parallel movement are enhanced.
Description
Technical Field
The utility model relates to a civil engineering equipment field especially relates to a full-automatic quadruple strain control formula staight scissors appearance.
Background
At present, all the civil engineering test instruments strain control type direct shear apparatus (quadruple shear) are used for testing the shear strength of soil, the apparatus can simultaneously apply horizontal shear action to the force measurement requirements of four soil samples under different vertical pressures, and then the shear strength coefficient, the internal friction angle and the cohesive force of the soil are determined by calculation according to the 'coulomb law'. The vertical pressure adopted by the existing instrument is realized by a proportional structure device of a mechanical lever and is connected with a vertical pressure structure, and the required pressure value is reached by converting the vertical pressure through a manual operation weight, so that the physical data requirement is met.
The existing instrument structure can not be separated from manual operation from 50 years to the present, and has the following defects: 1. the weight is added manually according to the vertical pressure requirement, so that the operation labor intensity is high, and the accumulated error of the weight is large; 2. due to the structure of the instrument, when the lever structure assembly and the connecting lever vertical pressure structural part move in parallel shearing, the load is larger, so the friction coefficient is increased; 3. the shear strength coefficient of the soil sample is measured by the instrument through parallel displacement, the structure is calculated by utilizing the deformation coefficient of the customized steel ring, and manual operation is also needed, so that the operation of the existing instrument can not be separated from manual operation, and the instrument has the advantages of high labor intensity, low efficiency and poor precision.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the main technical problem who solves provides a full-automatic quadruple strain control formula staight scissors appearance, can solve the above-mentioned problem that current instrument exists.
In order to solve the technical problem, the utility model discloses a technical scheme be: the utility model provides a full-automatic quadruple strain control formula direct shear appearance includes: the device comprises a stand column, a cross beam, a pressurizing stepping motor, a ball screw, a guide column, a linkage mechanism and a sensor; the top ends of the upright posts are fixed with two end bolts of the cross beam, and the bottom ends of the upright posts are arranged on the workbench in a sliding mode through a sliding mechanism; the pressurizing stepping motor is fixed at the top of the cross beam, the ball screw is positioned at the bottom of the cross beam, one end of the ball screw penetrates through the cross beam and is fixedly connected with the power output end of the pressurizing stepping motor, and the other end of the ball screw is in threaded connection with the linkage mechanism; the guide posts are symmetrically distributed by taking the ball screw as a center, the top ends of the guide posts are vertically fixed on the cross beam, the linkage mechanism is sleeved on the guide posts, and the sensor is fixed at the bottom end of the linkage mechanism and is collinear with the center of the ball screw.
In a preferred embodiment of the present invention, the bottom end of the sensor is provided with a sensor head, and the straight line of the center of the sensor head is the same as the straight line of the center of the ball screw.
In a preferred embodiment of the present invention, the linkage mechanism comprises a ball thread sleeve and a supporting block, wherein the ball thread sleeve is of an inverted T-shaped structure, the bottom outer edge of the ball thread sleeve is slidably connected with the guide pillar, and the ball screw thread penetrates through the ball thread sleeve.
In a preferred embodiment of the present invention, the fully automatic quadruple strain control type direct shear apparatus further comprises a power device, a shear box, an inductor and a fixing base; wherein the shearing box is placed on the workbench between the upright posts and is positioned right below the sensor; the power device and the fixed seat are fixed on the workbench at two sides of the shearing box in a direction perpendicular to the connecting line of the upright column, wherein a power output shaft of the power device is connected with one side of the shearing box; one end of the inductor is connected with the other side of the shearing box, and the other end of the inductor is connected with the fixed seat.
In a preferred embodiment of the present invention, the cutting box comprises an upper cutting box and a lower cutting box which are stacked up and down; one side of the upper shearing box, which faces the fixed seat, is fixedly connected with an upper ejector head; one side of the lower shearing box, which faces the power device, is fixedly connected with a lower top head, the upper top head is connected with the inductor, and the lower top head is connected with a power output shaft of the power device.
In a preferred embodiment of the present invention, one end of the sensor connected to the upper head is supported by a support, and the other end thereof is fixed to the fixing base by a bolt.
In a preferred embodiment of the present invention, the power device is a motor.
In a preferred embodiment of the present invention, the sliding mechanism includes a fixed block, a guide rail and a ball linear slide rail; the fixed block is fixedly installed at the bottom end of the stand column, the guide rail is fixed to the lower surface of the fixed block, the ball linear sliding rail is fixed to the workbench, and the guide rail moves along the ball linear sliding rail.
The utility model has the advantages that: the utility model relates to a full-automatic quadruple strain control type direct shear apparatus, which adopts the electromechanical integration design, and realizes automatic pressurization and force measurement through the design of a pressurization stepping motor, a ball screw and a pressure sensor in the vertical direction; the high-precision bidirectional ball slide rail is adopted in the horizontal direction to perform relative motion of shearing force, the sensitivity is high, the resistance is small, the mutual influence is avoided, the friction coefficient is reduced, and the linearity and the translation performance of parallel movement are enhanced.
Drawings
Fig. 1 is a schematic front view of a preferred embodiment of a full-automatic quadruple strain control type direct shear apparatus of the present invention;
FIG. 2 is a schematic side sectional view of the fully automatic quadruple strain control type direct shear apparatus;
FIG. 3 is a schematic diagram of a top view structure of the fully automatic quadruple strain control type direct shear apparatus;
the parts in the drawings are numbered as follows: 1. the device comprises a pressurizing stepping motor, 2. a beam, 3. an upright post, 4. a guide rail, 5. a guide post, 6. a fixed block, 7. a ball screw, 8. a ball thread sleeve, 9. a supporting block, 10. a sensor, 11. a sensor top, 12. a ball linear guide rail, 13. an upper top, 14. an inductor, 15. a lower top, 16. a workbench, 17. an upper shearing box, 18. a lower shearing box, 19. a fixed seat and 20. a power device.
Detailed Description
The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.
Referring to fig. 1-3, an embodiment of the present invention includes:
example 1
The utility model discloses a full-automatic quadruple strain control formula staight scissors appearance, include: the device comprises a pressurizing stepping motor 1, a cross beam 2, an upright post 3, a guide rail 4, a guide pillar 5, a fixing block 6, a ball screw 7, a ball thread sleeve 8, a support block 9, a sensor 10, a shearing box (an upper shearing box 17 and a lower shearing box 18), a ball linear guide rail 12, an upper top 13, a lower top 15, an inductor 14, a fixed seat 19 and a power device 20 (a motor).
The two upright columns 3 are vertically and symmetrically fixed on two sides of the workbench 16, the top ends of the upright columns are fixed with the two end parts of the cross beam 2 through bolts, and the bottom ends of the upright columns are arranged on the workbench 16 in a sliding mode through a sliding mechanism.
The pressurizing stepping motor 1 is fixed at the top of the cross beam 2, the ball screw 7 is positioned at the bottom of the cross beam 2, one end of the ball screw penetrates through the cross beam 2 and is fixedly connected with the power output end of the pressurizing stepping motor 1, and the other end of the ball screw is in threaded connection with the linkage mechanism. The guide posts 5 are symmetrically distributed by taking the ball screw 7 as a center, the top ends of the guide posts are vertically fixed on the cross beam 2, and the linkage mechanism (a ball thread sleeve 8 and a support block 9) is sleeved on the guide posts. Specifically, the ball thread insert 8 and the support block 9 are fixedly connected up and down, wherein the ball thread insert 8 is of an inverted T-shaped structure, the outer edge of the bottom of the ball thread insert is slidably connected with the guide pillar 5, and the ball screw 7 penetrates through the ball thread insert 8 in a threaded manner. The sensor 10 is fixedly connected to the bottom end of the support block 9 and moves by the up-and-down movement of the support block 9. The bottom end of the sensor 10 is provided with a sensor top 11, and a straight line of the center of the sensor top 11 and a straight line of the center of the ball screw 7 are collinear, so that the pressure of the pressurizing stepping motor can be completely applied to a soil sample to be detected. Because the ball screw 7 is in threaded connection with the ball thread sleeve 8, and the ball thread sleeve 8 is fixedly connected with the supporting block 9, when the pressurizing stepping motor 1 works to drive the ball screw 7 to rotate, the ball thread sleeve 8 and the supporting block 9 move downwards along the guide pillar 5, wherein the guide pillar 5 enables the ball thread sleeve 8 and the supporting block 9 to move more stably.
The cutting box (comprising an upper cutting box 17 and a lower cutting box 18 which are stacked up and down) is placed on the workbench 16 between the upright posts 3 and is positioned right below the sensor 10, and the power device 20 and the fixed seat 19 are fixed on the workbench 16 at two sides of the cutting box in a direction perpendicular to the connecting line of the upright posts 3.
Specifically, an upper plug 13 is fixedly connected to one side of the upper shearing box 17 facing the fixed seat 19; one side, facing the power device 20, of the lower shearing box 18 is fixedly connected with a lower ejector 15, the upper ejector 13 is connected with the inductor 14, the inductor 14 is connected with the fixed seat 19, and the lower ejector 15 is connected with a power output shaft of the power device 20.
In addition, the bottom fixed connection of stand 3 fixed block 6, the lower surface mounting of fixed block 6 has guide rail 4, lie in on the workstation 16 ball linear guide 12 is installed to the below of guide rail 4, guide rail 4 follows ball linear guide 12 removes. Through the design of slide mechanism, help reducing the frictional force of full-automatic four ally oneself with strain control formula staight scissors appearance in the course of the work.
All the mechanical structural parts of the invention are made of 304 stainless steel and aviation steel (6016 t 6) with higher strength, thus greatly improving the corrosion resistance.
The upper shearing box 17 and the lower shearing box 18 are made of 304 stainless steel, so that the anti-corrosion performance is stronger, the rigidity strength and the durability of the shearing knife edge are improved, and the service life is long.
The utility model discloses a theory of operation does:
when the pressurizing stepping motor 1 works, the power output end of the pressurizing stepping motor drives the ball screw 7 to rotate, the ball screw 7 and the ball thread sleeve 8 are screwed out under the rotation action of threads, so that the ball thread sleeve 8 moves downwards, the support block and a sensor on the support block are driven to stably move downwards along the guide pillar 5, and the acting force in the vertical direction is applied to a soil sample to be detected by the sensor top 11 at the moment.
Meanwhile, the motor 20 rotates to provide a horizontal normal force F to the lower shearing box 18, the normal force F pushes the lower shearing box 15 to move forwards, soil samples are sheared, in the process, the guide rail 4 slides relative to the ball linear guide roller 12, the sensor 10 is driven to move through the action of the upright post, the cross beam, the ball screw, the ball thread sleeve and the support block, shearing force is generated, and the sensor 14 senses the shearing force and transmits the shearing force to a computer.
The utility model discloses a mechatronic, computer data control, all pressure positions adopt sensor device, and the transmission that the pressurized step motor of vertical position independent use was connected ball screw and is carried out power cuts the position from top to bottom and all adopts independent mechanical system, adopts the high accuracy two-way ball slide rail to be the relative motion of shearing force, and sensitivity is high, and the resistance is little, each other does not influence, reduces coefficient of friction, reinforcing parallel movement linearity and translation nature.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship that the products of the present invention are usually placed when used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element to which the term refers must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a full-automatic quadruple strain control formula staight scissors appearance which characterized in that includes: the device comprises a stand column, a cross beam, a pressurizing stepping motor, a ball screw, a guide device and a sensor; the top ends of the upright posts are fixed with two end bolts of the cross beam, and the bottom ends of the upright posts are arranged on the workbench in a sliding mode through a sliding mechanism; the pressurizing stepping motor is fixed at the top of the cross beam, the ball screw is positioned at the bottom of the cross beam, one end of the ball screw penetrates through the cross beam and is fixedly connected with the power output end of the pressurizing stepping motor, and the other end of the ball screw is in threaded connection with the linkage mechanism; the guide posts are symmetrically distributed by taking the ball screw as a center, the top ends of the guide posts are vertically fixed on the cross beam, the linkage mechanism is sleeved on the guide posts, and the sensor is fixed at the bottom end of the linkage mechanism and is collinear with the center of the ball screw.
2. The automatic quadruple strain control type direct shear apparatus according to claim 1, wherein a sensor head is mounted at the bottom end of the sensor, and a straight line in which the center of the sensor head is located is collinear with a straight line in which the center of the ball screw is located.
3. The automatic quadruple strain control type direct shear apparatus according to claim 2, wherein the linkage mechanism comprises a ball thread sleeve and a supporting block which are fixedly connected up and down, wherein the ball thread sleeve is of an inverted T-shaped structure, the outer edge of the bottom of the ball thread sleeve is slidably connected with the guide post, and the ball screw thread penetrates through the ball thread sleeve.
4. The fully automatic quadruple strain control type direct shear apparatus according to claim 3, further comprising a power device, a shear box, an inductor and a fixed seat; wherein the shearing box is placed on the workbench between the upright posts and is positioned right below the sensor; the power device and the fixed seat are fixed on the workbench at two sides of the shearing box in a direction perpendicular to the connecting line of the upright column, wherein a power output shaft of the power device is connected with one side of the shearing box; one end of the inductor is connected with the other side of the shearing box, and the other end of the inductor is connected with the fixed seat.
5. The fully automatic quadruple strain control type direct shear apparatus according to claim 4, wherein the shear box comprises an upper shear box and a lower shear box which are stacked up and down; one side of the upper shearing box, which faces the fixed seat, is fixedly connected with an upper ejector head; one side of the lower shearing box, which faces the power device, is fixedly connected with a lower top head, the upper top head is connected with the inductor, and the lower top head is connected with a power output shaft of the power device.
6. The automatic quadruple strain control type direct shear apparatus according to claim 5, wherein one end of the inductor connected with the upper head is supported by a support, and the other end is fixed on the fixed seat by a bolt.
7. The fully automatic quadruple strain control type direct shear apparatus according to claim 5, wherein the power device is a motor.
8. The fully automatic quadruple strain control type direct shear apparatus according to claim 1, wherein the sliding mechanism comprises a fixed block, a guide rail and a ball linear slide rail; the fixed block is fixedly installed at the bottom end of the stand column, the guide rail is fixed to the lower surface of the fixed block, the ball linear sliding rail is fixed to the workbench, and the guide rail moves along the ball linear sliding rail.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921391912.0U CN211179353U (en) | 2019-08-26 | 2019-08-26 | Full-automatic quadruple strain control type direct shear apparatus |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921391912.0U CN211179353U (en) | 2019-08-26 | 2019-08-26 | Full-automatic quadruple strain control type direct shear apparatus |
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| CN211179353U true CN211179353U (en) | 2020-08-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110530739A (en) * | 2019-08-26 | 2019-12-03 | 常熟市徐润机电有限公司 | Full-automatic tetrad strain controlling formula direct shear apparatus |
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2019
- 2019-08-26 CN CN201921391912.0U patent/CN211179353U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110530739A (en) * | 2019-08-26 | 2019-12-03 | 常熟市徐润机电有限公司 | Full-automatic tetrad strain controlling formula direct shear apparatus |
| CN110530739B (en) * | 2019-08-26 | 2024-02-27 | 常熟市徐润机电有限公司 | Full-automatic four-linkage strain control type direct shear apparatus |
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