CN108982082B - Test device for static load capacity - Google Patents
Test device for static load capacity Download PDFInfo
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- CN108982082B CN108982082B CN201810602759.5A CN201810602759A CN108982082B CN 108982082 B CN108982082 B CN 108982082B CN 201810602759 A CN201810602759 A CN 201810602759A CN 108982082 B CN108982082 B CN 108982082B
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- 238000012360 testing method Methods 0.000 title claims abstract description 130
- 230000003068 static effect Effects 0.000 title claims abstract description 45
- 239000002184 metal Substances 0.000 claims description 15
- 230000003993 interaction Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
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- 238000013461 design Methods 0.000 description 1
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- 230000007613 environmental effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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Abstract
The invention discloses a test device of static load capacity, which is used for carrying out a static load capacity test on a metering box, and comprises the following components: base, first guide rail, first backup pad, second guide rail, test sample platform, control cabinet, second backup pad, fourth guide rail, force application device and anchor clamps. The sample platform can be arranged on the second guide rail in a movable way along the X axis, and the metering box is fixed on the sample platform; the control cabinet is vertically fixed on the other end of the top of the base, and a third guide rail is vertically fixed on one side of the control cabinet, facing the first guide rail; the force application device can be arranged on the fourth guide rail in a movable way along the X axis, and a telescopic push head is fixed on the force application device; the clamp is used for carrying out static load capacity test on the metering box. Therefore, the static load capacity test device can test the static load capacity of each part of the metering box, and greatly improves the accuracy of applied force and the test efficiency.
Description
Technical Field
The invention relates to the field of experimental devices, in particular to a device for testing static load capacity.
Background
Low voltage metering boxes are a more common type of device used in the power industry and are often used in a more severe environment, so in order to ensure that the devices such as the metering boxes, cabinets, plug boxes and cabinets can withstand normal operation in manufacturing, storage, installation and use and can withstand the environmental impact in use, and therefore, the devices need to be tested and detected when leaving a factory.
The static load test is formulated for evaluating and verifying the relevant mechanical and physical strength of the test article. The method is characterized in that vertical pressure, vertical pulling force or horizontal thrust is applied to the top or the outer side of a tested product locally and gradually, deformation of the whole or part of the measuring box along with time is observed, and accordingly the rigidity of the shell and the endurance test of the side wall are determined. By matching with different test fixtures, the assessment of components (such as a metering box door, a mounting plate metal insert and the like) on a tested product can be realized.
Devices currently on the market for applying a specific force to a test object are generally standardized devices, also known as "universal testers". The force application method of the test instrument is usually in the vertical direction, and the range of the thrust is very limited. The portal frame structure greatly limits the width and height of the tested product. The larger size of the test article encountered often fails to exert a test force on each point of action. In order to develop static load tests of the rotary type door and the metal insert, the direction and the applied angle of force also need to be adjusted, and no doubt the existing products on the market can not meet the demands at all.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art.
Disclosure of Invention
The invention aims to provide a static load capacity test device which can test the static load capacity of each part of a metering box and greatly improve the accuracy of applied force and test efficiency.
In order to achieve the above object, the present invention provides a static load capacity test apparatus for testing a static load capacity of a batch meter, wherein the static load capacity test apparatus includes: base, first guide rail, first backup pad, second guide rail, test sample platform, control cabinet, second backup pad, fourth guide rail, force application device and anchor clamps. The first guide rail is fixed on one end of the top of the base; the first supporting plate is movably arranged on the first guide rail along the Y axis; the second guide rail is fixed on the support plate; the sample platform can be arranged on the second guide rail in a movable way along the X axis, and the metering box is fixed on the sample platform; the control cabinet is vertically fixed on the other end of the top of the base, and a third guide rail is vertically fixed on one side of the control cabinet, which faces the first guide rail; the second supporting plate can be movably arranged on the third guide rail along the Z axis; the fourth guide rail is fixed on the second supporting plate; the force application device can be arranged on the fourth guide rail in a movable way along the X axis, and a telescopic push head is fixed on the force application device; the clamp is detachably fixed at the front end of the push head and is used for carrying out static load capacity test on the metering box; the control cabinet can control the first support plate to move along the Y axis on the first guide rail, the sample platform to move along the X axis on the second guide rail, the second support plate to move along the Z axis on the third guide rail, the force application device to move along the X axis on the fourth guide rail and the pushing head to stretch out and draw back on the force application device.
In a preferred embodiment, the control cabinet comprises: the cabinet body, servo motor, PLC, touch-sensitive screen and control module. The cabinet body is vertically fixed on the other end of the top of the base, and the third guide rail is vertically fixed on one side of the cabinet body facing the first guide rail; the servo motor is electrically connected with the first support plate, the sample platform, the second support plate, the force application device and the push head; the PLC is arranged in the cabinet body; the touch screen is arranged on the outer side of the cabinet body and is used for man-machine interaction; the control module is arranged in the cabinet body; the touch screen is in signal connection with the PLC, the control module and the servo motor; the servo motor can be driven to act through the PLC control module through clicking the option of touching the touch screen, so that the servo motor drives the first supporting plate, the sample platform, the second supporting plate, the force application device and the push head to act, and the clamp is driven to carry out static load capacity test on the metering box.
In a preferred embodiment, the clamp is a sidewall edge test clamp, a housing stiffness test clamp, or a metal screw insert test clamp; the side wall edge test fixture is used for carrying out static load capacity test on the side wall edge of the metering box; the shell rigidity test fixture is used for testing the shell rigidity of the metering box; and wherein the metal thread insert test fixture is used for carrying out a load test on the axial direction of the metal thread insert of the metering box.
In a preferred embodiment, the rear end of the push head is provided with a pulling pressure sensor for sensing forward pushing force and reverse pulling force applied by the clamp to the metering box, and the pulling pressure sensor is in signal connection with the PLC.
In a preferred embodiment, the base is 4000mm in length and 2000mm in width, and the control cabinet is 2.4m in height.
In a preferred embodiment, the servo motor is rated at 400W.
Compared with the prior art, the test device for static load capacity has the following beneficial effects: the static load capacity test device is simple and reasonable in structure, is suitable for static load capacity tests of metering boxes with different sizes, can test all parts of the metering boxes, and greatly improves the accuracy of applied force and test efficiency.
Drawings
Fig. 1 is a schematic front view of a static load capacity test apparatus according to an embodiment of the present invention.
Fig. 2 is a schematic view of the structure of a sidewall edge test jig of a static load capacity test apparatus according to an embodiment of the present invention.
Fig. 3 is a schematic structural view of a housing stiffness test fixture of a static load capacity test apparatus according to an embodiment of the present invention.
Fig. 4 is a schematic structural view of a metal screw insert test fixture of a static load capacity test apparatus according to an embodiment of the present invention.
The main reference numerals illustrate:
The test fixture comprises a base, a first guide rail, a first support plate, a second guide rail, a 5-test sample platform, a 6-control cabinet, a third guide rail, a second support plate, a fourth guide rail, a force application device, a clamp, a side wall edge test clamp, a shell rigidity test clamp and a metal screw insert test clamp, wherein the side wall edge test clamp is a base, the first guide rail, the first support plate, the second guide rail, the second support plate, the 5-test sample platform, the 6-control cabinet, the third guide rail, the second support plate, the fourth guide rail, the force application device and the force application device are arranged in sequence.
Detailed Description
The following detailed description of embodiments of the invention is, therefore, to be taken in conjunction with the accompanying drawings, and it is to be understood that the scope of the invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the term "comprise" or variations thereof such as "comprises" or "comprising", etc. will be understood to include the stated element or component without excluding other elements or components.
As shown in fig. 1 to 4, fig. 1 is a schematic front view of a static load capacity test apparatus according to an embodiment of the present invention, fig. 2 is a schematic structure of a sidewall edge test jig of a static load capacity test apparatus according to an embodiment of the present invention, fig. 3 is a schematic structure of a case rigidity test jig of a static load capacity test apparatus according to an embodiment of the present invention, and fig. 4 is a schematic structure of a metal screw insert test jig of a static load capacity test apparatus according to an embodiment of the present invention.
According to a preferred embodiment of the present invention, a static load capacity test apparatus for testing a static load capacity of a batch meter, includes: base 1, first guide rail 2, first backup pad 3, second guide rail 4, sample platform 5, control cabinet 6, second backup pad 8, fourth guide rail 9, force application device 10 and anchor clamps 11. The first guide rail 2 is fixed on one end of the top of the base 1; a first support plate 3 provided on the first rail 2 so as to be movable along the Y axis; the second guide rail 4 is fixed on the support plate; the sample platform 5 can be arranged on the second guide rail 4 in a movable way along the X axis, and the metering box is fixed on the sample platform 5; the control cabinet 6 is vertically fixed on the other end of the top of the base 1, and a third guide rail 7 is vertically fixed on one side of the control cabinet 6 facing the first guide rail 2; the second supporting plate 8 is movably arranged on the third guide rail 7 along the Z axis; the fourth guide rail 9 is fixed on the second support plate 8; the force application device 10 is movably arranged on the fourth guide rail 9 along the X axis, and a push head capable of stretching and retracting is fixed on the force application device 10; the clamp 11 is detachably fixed at the front end of the push head, and the clamp 11 is used for carrying out static load capacity test on the metering box; the control cabinet 6 can control the first support plate 3 to move along the Y axis on the first guide rail 2, the sample platform 5 to move along the X axis on the second guide rail 4, the second support plate 8 to move along the Z axis on the third guide rail 7, the force application device 10 to move along the X axis on the fourth guide rail 9, and the pushing head to stretch on the force application device 10.
In a preferred embodiment, the control cabinet 6 comprises: the cabinet body, servo motor, PLC, touch-sensitive screen and control module. The cabinet body is vertically fixed on the other end of the top of the base 1, and the third guide rail 7 is vertically fixed on one side of the cabinet body facing the first guide rail 2; the servo motor is electrically connected with the first supporting plate 3, the sample platform 5, the second supporting plate 8, the force application device 10 and the push head; the PLC is arranged in the cabinet body; the touch screen is arranged on the outer side of the cabinet body and is used for man-machine interaction; the control module is arranged in the cabinet body; the touch screen is in signal connection with the PLC, the control module and the servo motor; the option of touching the touch screen through clicking can drive the servo motor to act through the PLC control module, so that the servo motor drives the first support plate 3, the sample platform 5, the second support plate 8, the force application device 10 and the push head to act, and further the clamp 11 is driven to carry out static load capacity test on the metering box.
In a preferred embodiment, the clamp 11 is a sidewall edge test clamp 12, a housing stiffness test clamp 13 or a metal screw insert test clamp 14; the side wall edge test fixture 12 is used for carrying out static load capacity test on the side wall edge of the metering box; the shell rigidity test fixture 13 is used for testing the shell rigidity of the metering box; and wherein the metal screw insert test fixture 14 is used to load test the axial direction of the metal screw insert of the batch meter.
In a preferred embodiment, the rear end of the push head is provided with a pull pressure sensor for sensing the forward pushing force and the reverse pulling force applied by the clamp 11 to the metering box, and the pull pressure sensor is in signal connection with the PLC.
In a preferred embodiment, the base 1 has a length of 4000mm and a width of 2000mm, and the control cabinet 6 has a height of 2.4m.
In a preferred embodiment, the servo motor is rated at 400W.
In practical application, the test device for static load capacity adopts a horizontal design, a tested object (measuring box) is arranged on a stable platform (test object platform 5) and is positioned at one end of a main guide rail (the main guide rail is responsible for the Y-axis front-back movement of the tested object). A mounting base 1 custom-made for the low-voltage metering box is arranged on the platform. The base 1 is specially designed for low-voltage metering boxes. The size of the low-voltage metering box is 650×450×120 (mm) at the minimum, and 1320×1000×180 (mm) at the maximum. The other end of the main guide rail is provided with a control cabinet 6, the force application device 10 can move up and down and left and right on the control cabinet 6, the push head can move back and forth on the force application device 10, the control module controls the high-power servo motor to rotate forward or reversely according to set pulling force or pushing force (through options of a touch screen), then the high-power servo motor is combined with the ball screw sliding block through the speed reduction device, real-time data are sent to the PLC through the pulling pressure sensor, and force above 2000N can be applied to a tested object.
The base 1 is the basis of a test device, the first guide rail 2, the first support plate 3, the second guide rail 4, the test product platform 5, the control cabinet 6 and other components are located on the base, after the measuring box is installed on the test product platform 5 in a test preparation stage, the measuring box can be conveniently moved back and forth and left and right (moved along the X axis and the Y axis), so that the pushing head of the force application device 10 can be accurately aligned with a test position point of the measuring box, the front and back movement range is not less than 1600mm, and the left and right movement range is not less than 1600mm. The positions of the mounting holes, the slots, the fastening clamps, the back plate mounting holes, the binding band holes and the like of the sample platform 5 are carefully designed, so that the measuring boxes with all specifications and sizes and various mounting modes can be stably mounted on the sample platform 5.
A control cabinet 6 of a vertical steel structure with a height of about 2.4m is arranged above the other side of the base 1, and a pair of vertical movement tracks (a third guide rail 7) and a horizontal movement thrust track (a fourth track) are arranged on the control cabinet, wherein the combination of the tracks on the vertical structure can enable the movable position of the push head to cover all test points of a tested article (a metering box). The pushing head is positioned at the front end of the force application device 10, the clamp 11 is detachably fixed at the front end of the pushing head, the telescopic stroke of the pushing head is not less than 300mm, the up-down moving range is not less than 1600mm, the left-right moving range is not less than 1800mm, under the common assistance of the three groups of tracks, the application point of the whole device on a tested product can cover a range reaching 3200mm in width, 1600mm in height and 1600mm in thickness, and the specification and the size of all electric low-voltage metering boxes are completely met.
The force application device 10 is connected with the fixed clamp 11 through a push head, and then forwards or backwards acts on a tested object to form pushing force or pulling force, and the forward and backward movement of the push head is realized by controlling a high-power servo motor through a control module by a PLC and then passing through a speed reduction device and a ball screw sliding block. The force application device 10 can generate forward pushing force and reverse pulling force of more than 2000N under the action of a 400W servo motor and a matched speed reducing device. Due to the adoption of a precise screw rod structure, displacement with the precision of 0.01mm can be realized under the precise calculation and operation of the control module. Very precise push and pull tests can be carried out. The force application device 10 controls the forward and backward speeds according to the magnitude of the applied force and the mechanical strength of the tested object, and feeds back the control module in real time, and the latter adjusts the force application speed according to the real-time condition of the test, so as to achieve the high-precision and rapid test.
All the guide rails adopt chromed linear optical axes, and the sliding block part adopts 45# steel plates to customize and process the high-strength beadless sliding block. Considering that the device is a pressure test device, all the installation and sliding devices are connected in a hard high-strength connection mode, so that abrasion and damage caused by heavy pressure are avoided.
The control cabinet 6 is internally provided with an industrialized PLC, a control module, a servo motor and a touch screen, and can be internally provided with a two-stage control singlechip system to jointly form the control cabinet 6, the control cabinet 6 effectively combines all systems of the whole equipment, and the whole test process is completed in one step by matching with a logic relationship, so that the whole operation is simple and quick due to the characteristics of integration and no need of manual intervention, the test force is accurate in place, and the requirements of related standards are met to the greatest extent. The display screen is internally provided with a program for man-machine interaction, and a user can make the whole equipment perform actions corresponding to the options by clicking related options on the touch screen.
The test device for static load capacity of the invention integrates a multifunctional test of the measuring box, can realize the rigidity test of the shell of the measuring box, the tolerance test of the shell, the test of a threaded connection metal insert, the test of a measuring box door, the test of a mounting plate and the like, is compatible with the measuring box test of all standard sizes, and has the maximum size measuring box of 8 epitope accessed by a transformer, 1320mm long by 1000mm wide by 180mm high, and the minimum size of 648mm long by 450mm wide by 120mm high of the measuring box of 2 epitope.
In addition, the experimental procedure of the static load capacity test device of the invention is as follows:
step one: fixing a test sample metering box on a test sample platform 5;
step two: fixing the clamp 11 to the pusher of the force application device 10;
Step three: starting up, selecting a thrust test (other tests can be selected, such as a pressure test), and moving the position of the sample platform 5 or the force application device 10 through a direction button of the sample platform 5 or the force application device 10 on the interface of the touch screen to enable a push head of the force application device 10 to be positioned at a force application position of a tested sample;
Step four: setting parameters such as the applied thrust, the applied time and the like;
step five: clicking a start key to start a thrust test;
Step six: replacement of the thrust jig 11 the thrust experiment was repeated (replacement of a different jig 11 may be performed for a different experiment);
Step seven: returning to an initial interface to select a tensile test, moving the position of a tested product or the force application device 10 through a direction button of the test product platform 5 or the force application device 10 on the touch screen interface, enabling the tested product to be positioned at a proper position of the test, replacing a tensile traction rope, and acting the tensile traction rope on a tested product box body;
step eight: setting parameters such as the applied tension, the applied time and the like;
Step nine: clicking a start key to start a tension test;
Step ten: and (5) completing the test.
In a word, the static load capacity test device is simple and reasonable in structure, is suitable for static load capacity tests of measuring boxes with different sizes, can test all parts of the measuring boxes, and greatly improves the accuracy of applied force and test efficiency.
The foregoing descriptions of specific exemplary embodiments of the present invention are presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain the specific principles of the invention and its practical application to thereby enable one skilled in the art to make and utilize the invention in various exemplary embodiments and with various modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (4)
1. A test device of dead load ability for carry out dead load ability test to the batch meter, its characterized in that, the test device of dead load ability includes:
A base;
A first guide rail fixed to one end of the top of the base;
a first support plate provided on the first rail so as to be movable along the Y axis;
a second guide rail fixed to the support plate;
The sample platform can be arranged on the second guide rail in a movable manner along the X axis, and the metering box is fixed on the sample platform;
the control cabinet is vertically fixed on the other end of the top of the base, and a third guide rail is vertically fixed on one side, facing the first guide rail, of the control cabinet;
a second support plate provided on the third rail so as to be movable along the Z axis;
A fourth guide rail fixed to the second support plate;
The force application device can be arranged on the fourth guide rail in a movable mode along the X axis, and a push head capable of stretching is fixed on the force application device; and
The clamp is detachably fixed at the front end of the push head and is used for carrying out a static load capacity test on the metering box;
The control cabinet can control the first supporting plate to move on the first guide rail along the Y axis, the sample platform to move on the second guide rail along the X axis, the second supporting plate to move on the third guide rail along the Z axis, the force application device to move on the fourth guide rail along the X axis and the pushing head to stretch on the force application device;
Wherein, control cabinet includes:
the cabinet body is vertically fixed on the other end of the top of the base, and the third guide rail is vertically fixed on one side of the cabinet body, which faces the first guide rail;
The servo motor is electrically connected with the first support plate, the sample platform, the second support plate, the force application device and the push head;
the PLC is arranged in the cabinet body;
the touch screen is arranged on the outer side of the cabinet body and is used for man-machine interaction; and
The control module is arranged in the cabinet body;
The touch screen is in signal connection with the PLC, the control module and the servo motor;
The control module can be controlled by the PLC to drive the servo motor to act by clicking an option of touching the touch screen, so that the servo motor drives the first support plate, the sample platform, the second support plate, the force application device and the push head to act, and the clamp is driven to carry out static load capacity test on the metering box;
The rear end of the push head is provided with a pulling pressure sensor which is used for sensing forward pushing force and reverse pulling force applied by the clamp to the metering box, and the pulling pressure sensor is in signal connection with the PLC.
2. The static load capacity test device of claim 1, wherein the clamp is a sidewall edge test clamp, a shell stiffness test clamp, or a metal threaded insert test clamp;
The side wall edge test fixture is used for carrying out static load capacity test on the side wall edge of the metering box;
The shell rigidity test fixture is used for testing the shell rigidity of the metering box; and
The metal screw insert test fixture is used for carrying out a load test on the axial direction of the metal screw insert of the metering box.
3. The static load capacity test device of claim 1, wherein the base has a length of 4000mm and a width of 2000mm, and the control cabinet has a height of 2.4m.
4. The static load capacity test device of claim 1, wherein the servo motor has a rated power of 400W.
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