CN108827801B - Multifunctional horizontal steel bar bending tester - Google Patents
Multifunctional horizontal steel bar bending tester Download PDFInfo
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- CN108827801B CN108827801B CN201810404411.5A CN201810404411A CN108827801B CN 108827801 B CN108827801 B CN 108827801B CN 201810404411 A CN201810404411 A CN 201810404411A CN 108827801 B CN108827801 B CN 108827801B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
- G01N3/36—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by pneumatic or hydraulic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0023—Bending
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/0202—Control of the test
- G01N2203/0208—Specific programs of loading, e.g. incremental loading or pre-loading
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
- G01N2203/0278—Thin specimens
- G01N2203/0282—Two dimensional, e.g. tapes, webs, sheets, strips, disks or membranes
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The multifunctional horizontal steel bar bending tester comprises a horizontal steel bar bending tester body, a PLC and two sets of hydraulic cylinders, wherein the PLC is installed in an element box of the horizontal steel bar bending tester body, the two sets of hydraulic cylinders are respectively installed in the middle parts of the left side and the right side of the upper end of a frame of the horizontal steel bar bending tester body, the multifunctional horizontal steel bar bending tester also comprises automatic plate turning interval adjusting equipment, a slotted plate turning, a round platform plate turning, a bending core and a reverse bending pressure head, a first fixed pin is respectively fixed in a right opening of the bending core and an opening at the left front end of a plunger of a hydraulic cylinder at the right upper end of the frame, a second fixed pin is respectively fixed in a left opening of the reverse bending pressure head and an opening at the right front end of the plunger of the hydraulic cylinder at the left upper end of the frame, the automatic plate turning interval adjusting equipment, the slotting turning plate and the circular truncated cone turning plate are arranged at the upper end of the automatic turning plate interval adjusting equipment.
Description
Technical Field
The invention relates to the field of steel bar bending test equipment, in particular to a multifunctional horizontal steel bar bending test machine.
Background art:
before the steel bar leaves a factory or is used, in order to ensure the subsequent use reliability, the performance of the steel bar needs to be tested, particularly, a repeated bending experiment on the steel bar by using a horizontal steel bar bender is an important test procedure, and data such as repeated bending performance, fatigue resistance and the like of the steel bar can be detected during testing. The working mode of the existing horizontal steel bar bender is that a steel bar pattern is arranged at the upper ends of two fixed turning plates, the turning plates are in a fixed state, and then when a pattern steel bar repeated bending test is carried out, under the control of the control equipment of the horizontal steel bar bender, the front end of a plunger of a hydraulic oil cylinder at one end of the upper part of a rack of the horizontal steel bar bender acts on one side of a steel bar pattern to bend one side of the steel bar pattern, then the bent side of the pattern steel bar is manually changed to the right ends of the two fixed turning plates, after the pattern steel bar is fixed, under the control of the control equipment of the horizontal steel bar bender, the front end of the plunger of the hydraulic oil cylinder at one end of the upper part of the rack of the horizontal steel bar bender acts on the bent side of the steel bar pattern, so that the bent side is firstly straightened and then bent to the left side, the purpose of repeatedly carrying out the bending degree experiment of the pattern reinforcing steel bars can be achieved by manually and repeatedly manually adjusting the positions of the pattern reinforcing steel bars. In the process, the positions of the style reinforcing steel bars on the left side and the right side of the two turning plates need to be manually and repeatedly adjusted, so that the operation is very inconvenient, the speed is low during the test, and the efficiency is low.
Because the two turning plates of the existing horizontal steel bar bender are in a fixed state, only one fixed point of the style steel bar can be subjected to a bending test, and the performance of the steel bar can be tested by performing the bending test on any point position of the steel bar from front to back according to requirements during the actual test, the bending test (namely the bending test of the steel bar style under different spans) on as many test points as possible from front to back of the style steel bar is realized by adjusting the front and back positions of a hydraulic oil cylinder at the upper end of a frame in the existing horizontal steel bar bender, because the rear end of the hydraulic oil cylinder is connected with an oil pump through a hydraulic oil pipe, the front and back positions of the hydraulic oil cylinder at the upper end of the frame are inconvenient to adjust, a screw nut for fixing the hydraulic oil cylinder needs to be manually screwed down firstly during each adjustment, then the front and back positions of the hydraulic oil cylinder are adjusted, the operation is very complicated, and the labor intensity of an operator is increased. The existing horizontal steel bar bender is limited by the structure, only can carry out a positive and negative bending test with a certain angle on a steel bar sample, and cannot carry out a 0-180-degree bending test on the steel bar sample, so that the use of the existing horizontal steel bar bender has limitation.
Based on the above, the bending experiment can be automatically and simultaneously performed on the left end and the right end of the style steel bar without manually and repeatedly adjusting the positions of the style steel bar on the left side and the right side of the two turning plates; when the bending test is carried out on the test points of the pattern steel bar from front to back as many as possible, manual adjustment is not needed, the labor intensity of an operator can be reduced, and the steel bar bending test machine for carrying out the bending test of the pattern steel bar at 0-180 degrees is particularly necessary.
Disclosure of Invention
In order to overcome the defects brought by the conventional steel bar bending machine during the steel bar style bending test due to the limitation of the structure, the invention provides the multifunctional horizontal steel bar bending testing machine which is characterized in that the left part and the right part of the upper end of a frame of a body of the horizontal steel bar bending machine are respectively provided with a hydraulic cylinder, when the horizontal steel bar bending machine works, plungers at the front ends of the two hydraulic cylinders can alternately act on two side ends of a style steel bar in a telescopic mode under the control of a PLC, so that the directions of the style steel bar at the left side and the right side of two turning plates do not need to be manually and repeatedly adjusted, the multifunctional horizontal steel bar bending testing machine is also provided with an automatic turning plate interval adjusting device, the span between the upper ends of the two turning plates of the style steel bar can be automatically adjusted, manual adjustment is not needed, a slotting turning plate and.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a multifunctional horizontal steel bar bending tester comprises a horizontal steel bar bending tester body, a PLC and two sets of hydraulic oil cylinders, wherein the two sets of hydraulic oil cylinders are respectively connected with liquid outlet ends of two electromagnetic directional valves matched with the two sets of hydraulic oil cylinders through four hydraulic oil pipes, liquid inlet ends of the two electromagnetic directional valves are connected with liquid outlet ends of an electric hydraulic oil pump of the horizontal steel bar bending tester body through another four hydraulic oil pipes, first and second power output ends of the PLC are respectively connected with power input ends of the two electromagnetic directional valves through leads, the PLC is arranged in an element box of the horizontal steel bar bending tester body, the multifunctional horizontal steel bar bending tester is characterized in that the two sets of hydraulic oil cylinders are respectively arranged in the middle of the left side and the right side of the upper end of a frame of the horizontal steel bar bending tester body, the PLC is operated, respectively outputting hydraulic oil to enter the rear ends of hydraulic cylinders of the two sets of hydraulic cylinders, enabling the hydraulic oil in the front end of the hydraulic cylinder to flow back into the electric hydraulic oil pump, and alternately extending and contracting bending cores and backward bending pressure heads at the left and right sets of hydraulic cylinders and the front end of the plunger at the upper end of a frame of a body of the horizontal steel bar bending tester to act on the left and right sides of a steel bar pattern to repeatedly bend the steel bar pattern; the left part of the bending core is of a solid structure, the right part of the bending core is of a hollow structure, the right part of the bending core is sleeved at the front end of a hydraulic oil cylinder plunger at the upper right end of a frame of the horizontal steel bar bending testing machine body, a first fixing pin is respectively fixed in a hole at the right part of the bending core and a hole at the left front end of the hydraulic oil cylinder plunger at the upper right end of the frame, the right part of the backward bending pressure head is of a solid structure, the left part of the backward bending pressure head is of a hollow structure, the left part of the backward bending pressure head is sleeved at the front end of the hydraulic oil cylinder plunger at the upper left end of the frame of the horizontal steel bar bending testing machine body, a second fixing pin is respectively fixed in a hole at the left part of the backward bending pressure head and a hole at the right front end of the hydraulic oil cylinder plunger at the upper left end of the frame, the automatic plate turning distance adjusting device is installed in the, the slotting turning plate and the circular truncated cone turning plate are respectively provided with two same plates and are arranged at the upper end of the automatic turning plate interval adjusting equipment.
The automatic plate turning interval adjusting device comprises a servo motor, a triangular belt, a driven belt pulley, a driving belt pulley, a screw rod, fixed plates, sliding tables, a guide groove and a guide shaft rod, wherein a third power supply output end of a PLC (programmable logic controller) is connected with a power supply input end of the servo motor through a lead wire, the middle parts of the two sliding tables are respectively provided with an opening from top to bottom as a shaft hole, the left ends of the two sliding tables are respectively provided with an opening from front to back as a guide hole, the right end of the first sliding table is provided with a screw hole with left-handed internal threads from front to back, the right end of the second sliding table is provided with a screw hole with right-handed internal threads from front to back, one end of the middle part of the screw rod is provided with left-handed external threads from the rear end to the middle part of the screw rod, the left ends of the two fixed plates are respectively provided with an opening, the front right ends of, the left-handed external thread from one end of the middle part of the screw rod to the rear end is screwed into the screw hole left-handed internal thread at the right end of the first sliding table, the first sliding table is arranged at the rear part of the screw rod, the right-handed external thread from one end of the middle part of the screw rod to the front end is screwed into the screw hole right-handed internal thread at the right end of the second sliding table, the second sliding table is arranged at the front part of the screw rod, the guide holes at the left ends of the two sliding tables are respectively sleeved on the guide shafts, the two openings at the left ends of the front ends of the two fixed plates are respectively sleeved on the front end and the rear end of the guide shaft rod, the inner rings of the two bearings at the front right ends of the two fixed plates are respectively sleeved on the front end and the rear end of the screw rod, the upper ends of the two fixed plates are respectively provided with a plurality of fixed holes, the driving pulley is installed on the driving shaft of the servo motor, the servo motor is installed on the rear right side end of the frame through the screw nut, the V-belt is respectively sleeved on the driven pulley and the driving pulley, the guide groove is of a L shape, the lower part of the outer side end of the guide groove is provided with a mounting plate which is distributed from front to back and provided with a plurality of openings, and the four guide grooves are respectively installed on the front end and the rear end of the left part and the right part of the frame through the mounting plate and a plurality of screw nuts.
The outer diameter of a driving belt pulley of the automatic plate turning interval adjusting equipment is smaller than that of a driven belt pulley.
The outer diameter of the guide shaft lever of the automatic plate turning interval adjusting equipment is smaller than the inner diameter of the guide hole from the front to the back at the left end of the two sliding tables, and the left ends of the two sliding tables can freely move back and forth along the guide shaft lever.
The lower ends of the inner sides of the four guide grooves of the automatic plate turning interval adjusting equipment are respectively spaced from the upper parts of the outer side ends of the two sliding tables by a certain distance, and the four guide grooves play a role in guiding the front and back movement of the two sliding tables.
After the two sliding tables of the automatic plate turning interval adjusting device are installed, the front end of one sliding table at the rear end of the rack and the rear end of one sliding table at the front end are close to each other and are spaced at a certain distance.
When a servo motor of the automatic plate turning interval adjusting device drives a screw rod to rotate clockwise through a driving belt pulley, a triangle belt and a driven belt pulley, a left-handed external thread at the rear part of the screw rod acts on a left-handed internal thread of a sliding table at the rear end of a rack, one sliding table at the rear end of the rack slides towards the front end of the rack, a right-handed external thread at the front part of the screw rod acts on a right-handed internal thread of the sliding table at the front end of the rack, one sliding table at the front end of the rack slides towards the rear end of the rack, the two sliding tables are close to each other in distance, when the servo motor drives the screw rod to rotate anticlockwise through the driving belt pulley, the triangle belt and the driven belt pulley, the left-handed external thread at the rear part of the screw rod acts on the left-handed internal thread of the sliding table at the rear end of, the distance between the two sliding tables is increased.
The upper end of the slotting turning plate is provided with an open slot which is distributed from front to back, the upper parts of the left end and the right end of the open slot are respectively provided with an internal thread opening, the lower end of the slotting turning plate is provided with a shaft lever from top to bottom, the upper end of the right side of the round platform turning plate is longitudinally provided with an open slot, the upper end of the front side of the round platform turning plate is transversely provided with an open slot as a limit slot, the width between the upper part and the lower part of the limit slot of the round platform turning plate is narrower than the width between the upper part and the lower part of the open slot at the upper end of the right side of the round platform turning plate, the lower end of the round platform turning plate is provided with a shaft lever from top to bottom, the two slotting turning plates are respectively sleeved in the shaft holes at, The outer diameter of the shaft lever at the lower end of the circular truncated cone turning plate is smaller than the inner diameter of the shaft hole in the middle of the sliding table from top to bottom, so that the two slotted turning plates and the circular truncated cone turning plate can freely rotate along the sliding table and the shaft hole in the middle from top to bottom through the shaft lever at the lower end.
The invention has the beneficial effects that: when a positive and negative steel bar pattern bending test with a certain angle is carried out, shaft rods at the lower ends of two slotted turning plates are respectively sleeved in shaft holes distributed in the middle parts of two sliding tables from top to bottom, then the front and back ends of a pattern steel bar are placed in open slots at the upper ends of the two slotted turning plates from front to back, then four fixing screws respectively penetrate through the open holes at the left and right ends of two fixing clamps and are screwed into internal threads of the open holes at the upper parts of the left and right ends of the two slotted turning plates, and a steel bar pattern is installed between the upper ends of the two slotted turning plates (a back slotted turning plate is fixed between the rear upper end of the pattern steel bar and the lower end of the fixing clamp by adding a backing plate tightly, so that when the back and forth movement of the back end of the slotted turning plate is ensured, the; the positions of two sets of hydraulic cylinders are fixed, and during test, the output ends of a first power supply and a second power supply of the PLC alternately output power supplies to control two electromagnetic directional valves to alternately get electricity to work by operating the PLC, so that the front ends of left and right sets of hydraulic cylinder plungers at the upper end of a frame of a horizontal type steel bar bending test machine body are controlled to alternately stretch and contract to act on left and right side ends of a steel bar pattern, and the purpose of repeatedly bending the steel bar pattern is achieved. When bending test is needed to be carried out on the steel bar pattern from front to back as many test points as possible, the performance of the steel bar is tested (namely the bending test of the steel bar pattern under different spans), the bending test is carried out on the part of the pattern steel bar close to the relative rear part of the frame (namely the bending test of the steel bar pattern under relatively small spans), the servo motor is controlled to rotate clockwise by operating the output power supply of the third power supply output end of the PLC, then the servo motor drives the screw rod to rotate clockwise by the driving belt pulley, the triangular belt and the driven belt pulley, one sliding table at the rear end of the frame slides to the front end of the frame, one sliding table at the front end of the frame slides to the rear end of the frame, the distance between the two sliding tables is close, the relative rear part of the pattern steel bar is close to the front ends of left and right hydraulic cylinder plungers at the upper end of the frame of the horizontal steel bar, therefore, the front ends of the left hydraulic cylinder plunger and the right hydraulic cylinder plunger at the upper end of the frame of the horizontal steel bar bending testing machine body are controlled to alternately stretch and contract to act on the left side end and the right side end of the steel bar pattern, and the purpose of repeatedly bending the relative rear part of the steel bar pattern is achieved (namely the purpose of bending test of the steel bar pattern under a relatively small span is achieved). When bending test of a model reinforcing steel bar is carried out at a position close to the relative front part of the frame (namely bending test of a reinforcing steel bar model under a relatively large span), a servo motor is controlled to rotate anticlockwise by operating a third power output end of the PLC, so that the servo motor drives a screw rod to rotate anticlockwise through a driving belt pulley, a triangle belt and a driven belt pulley, a sliding table at the rear end of the frame slides towards the rear end of the frame, a sliding table at the front end of the frame slides towards the front end of the frame, the distance between the two sliding tables is lengthened, the relative front part of the model reinforcing steel bar is close to the front ends of left and right hydraulic cylinder plungers at the upper end of the frame of a horizontal reinforcing steel bar bending tester body, and during the test, the front ends of the left and right hydraulic cylinder plungers at the upper end of the frame of the horizontal reinforcing steel bar bending tester body are controlled to alternately stretch, the purpose of repeatedly bending the front part of the steel bar pattern (namely the purpose of bending test of the steel bar pattern under a relatively large span) is achieved. When the invention is used for carrying out a bending test of a steel bar style of 0-180 degrees, the two slotted turning plates are taken down from the middle parts of the two sliding tables, shaft rods at the lower ends of the two circular table turning plates are respectively sleeved in shaft holes distributed in the middle parts of the two sliding tables from top to bottom, then the steel bar style is placed in a longitudinal open slot at the upper right ends of the two circular table turning plates, and during the test, through operating the PLC, the power output end of the first power output end of the PLC controls the first electromagnetic reversing valve to be powered on to work, so that the front end of a hydraulic oil cylinder plunger at the right part of the upper end of a frame of a horizontal steel bar bending test machine body is controlled to extend forwards and gradually act on the right side end of the steel bar style. When the hydraulic type steel bar slotting and turning machine works, the plungers at the front ends of the two hydraulic oil cylinders can alternatively stretch and contract to act on the two side ends of the style steel bar under the control of the PLC, so that the directions of the style steel bar at the left side and the right side of the two slotting and turning plates do not need to be manually and repeatedly adjusted; the automatic plate turnover distance adjusting device is also arranged, so that the span of the type steel bar between the upper ends of the two slotted plate turnover devices can be automatically adjusted without manual adjustment; the bending test device is also provided with a slotting turning plate and a circular truncated cone turning plate, not only can realize the positive and negative certain angle bending test of the style reinforcing steel bar, but also can realize the 0-180 degree bending test of the style reinforcing steel bar. Based on the above, the invention has good application prospect.
Drawings
The invention is further illustrated below with reference to the figures and examples.
FIG. 1 is a schematic top view of the present invention.
Fig. 2 is a schematic front view of the present invention.
Fig. 3 is a schematic view of a slotted flap structure according to the present invention.
Fig. 4 is a schematic view of a round platform turning plate structure in the invention.
FIG. 5 is a schematic view of a local structure of a round platform turning plate for a steel bar pattern 0-180 degree bending test according to the present invention.
FIG. 6 is a schematic view of a local structure of a steel bar type positive and negative bending test using a slotted turning plate according to the present invention.
Detailed Description
As shown in figures 1, 2, 3, 4, 5 and 6, the multifunctional horizontal steel bar bending tester comprises a horizontal steel bar bending tester body 1, a PLC2 and two sets of hydraulic oil cylinders 3-1 and 3-2, wherein the two sets of hydraulic oil cylinders 3-1 and 3-2 are respectively connected with the liquid outlet ends of two electromagnetic directional valves matched with the two sets of hydraulic oil cylinders 3-1 and 3-2 through four hydraulic oil pipes, the liquid inlet ends of the two electromagnetic directional valves are connected with the liquid outlet end of an electric hydraulic oil pump of the horizontal steel bar bending tester body 1 through another four hydraulic oil pipes, the first path and the second path of power output ends of PL2C are respectively connected with the power input ends of the two electromagnetic directional valves through leads, the PLC2 is installed in an element box of the horizontal steel bar bending tester body 1, the two sets of hydraulic oil cylinders 3-1 and 3-2 are respectively installed in the middle parts of the left side and, the plunger of the two sets of hydraulic cylinders 3-1 and 3-2 faces towards the inner side end, the automatic plate turning and spacing adjusting device 4, the slotted plate turning 5, the circular table plate turning 6, the bent core 7 and the reverse bending pressure head 8 are further arranged, the left part of the bent core 7 is of a solid structure, the right part of the bent core 7 is of a hollow structure, the right part of the bent core 7 is sleeved at the front end of the plunger of the hydraulic cylinder 3-1 at the upper right end of a rack 1-1 of the horizontal steel bar bending testing machine body, the right part of the bent core 7 is provided with an opening from top to bottom, the left front end of the plunger of the hydraulic cylinder 3-1 at the upper right end of the rack is provided with an opening, a first fixing pin 9-1 is respectively fixed in the opening at the right part of the bent core 7 and the opening at the front left end of the plunger of the hydraulic cylinder 3-1 at the upper right end of the rack, the left part of the reverse bending pressure head 8 is of a hollow structure, the right part of the 2, the front end of a plunger, the left part of a backward bending pressure head 8 is provided with an opening from top to bottom, the right front end of a plunger of a hydraulic cylinder 3-2 at the upper left end of a rack is provided with an opening, a second fixing pin 9-2 is respectively fixed in the opening at the left part of the backward bending pressure head 8 and the opening at the front right end of the plunger of the hydraulic cylinder 3-2 at the upper left end of the rack, a slotting turning plate 5 and a circular truncated cone turning plate 6 are respectively provided with the same two, an automatic turning plate interval adjusting device 4 is arranged in the middle of the upper end of a rack 1-1 of a horizontal type steel bar bending testing machine body, and the slotting turning plate 5 and the circular.
As shown in figures 1, 2, 3, 4, 5 and 6, the automatic plate turnover distance adjusting device 4 comprises a servo motor 4-1, a triangular belt 4-2, a driven belt pulley 4-3, a driving belt pulley 4-4, a screw rod 4-5, fixing plates 4-6-1 and 4-6-2, sliding tables 4-7-1 and 4-7-2, a guide groove 4-8 and a guide shaft rod 4-9, a third power output end of a PLC2 and a power input end of the servo motor 4-1 are connected through a lead wire, the middle parts of the two sliding tables 4-7-1 and 4-7-2 are respectively provided with an opening as a shaft hole from top to bottom, the left ends of the two sliding tables 4-7-1 and 4-7-2 are respectively provided with an opening as a guide hole 4-10 from front to back, the right end of the first sliding table 4-7-1 is provided with a screw hole 4-11 with left-handed internal threads from front to back, the right end of the second sliding table 4-7-2 is provided with a screw hole 4-11 with right-handed internal threads from front to back, the middle end of the screw rod 4-5 is provided with left-handed external threads from one end to the back end, the middle end of the screw rod 4-5 is provided with right-handed external threads from one end to the front end, the front left ends of the two fixing plates 4-6-1 and 4-6-2 are respectively provided with an opening 4-12, the front right ends of the two fixing plates 4-6-1 and 4-6-2 are respectively provided with an axle hole 4-13, a bearing is sleeved in each axle hole of the front right ends of the two fixing plates 4-6-1 and 4-6-2, and the left-handed external threads from one end to the back end of the middle of the screw rod 4-5 are screwed into the A screw hole left-hand internal thread at one end, a first sliding table 4-7-1 is arranged at the rear part of a screw rod 4-5, a right-hand external thread from one end of the middle part of the screw rod 4-5 to the front end is screwed into a screw hole right-hand internal thread at the right end of a second sliding table 4-7-2, the second sliding table 4-7-2 is arranged at the front part of the screw rod 4-5, guide holes 4-10 at the left ends of two sliding tables 4-7-1 and 4-7-2 are respectively sleeved on guide shaft rods 4-9, two openings 4-12 at the front left ends of two fixed plates are respectively sleeved on the front and rear ends of the guide shaft rods 4-9, two inner rings at the front right ends of two fixed plates 4-6-1 and 4-6-2 are respectively sleeved on the front and rear ends of the screw rod 4-5, and the upper ends of the two fixed plates 4-6-1 Fixing holes 4-14, installing two fixing plates 4-6-1 and 4-6-2 on the front and rear ends of the middle part of a frame 1-1 of a horizontal type steel bar bending tester body through a plurality of fixing holes 4-14 at the upper ends of the two fixing plates by a plurality of screw nuts, installing a driven belt pulley 4-3 on the rear end of a screw rod 4-5, installing a driving belt pulley 4-4 on a driving shaft of a servo motor 4-1, installing the servo motor 4-1 on the rear right side end of the frame 1-1 through the screw nuts, respectively sleeving a triangle belt 4-2 on the driven belt pulley 4-3 and the driving belt pulley 4-4, arranging a guide groove 4-8 in a 'Lianli' shape, arranging a mounting plate with a plurality of openings from front to back on the lower part of the outer side end of the guide groove 4-8, the four guide grooves 4-8 are respectively arranged on the front and rear ends of the left and right parts of the frame 1-1 by a plurality of screw nuts through the mounting plate. The outer diameter of a driving belt pulley 4-4 of the automatic flap interval adjusting equipment is smaller than that of a driven belt pulley 4-3. The outer diameter of the guide shaft lever 4-9 of the automatic plate turning interval adjusting device is smaller than the inner diameter of the guide hole 4-10 from the front to the back at the left end of the two sliding tables 4-7-1 and 4-7-2, and the left ends of the two sliding tables 4-7-1 and 4-7-2 can freely move back and forth along the guide shaft lever 4-9. The lower ends of the inner sides of four guide grooves 4-8 of the automatic plate turning interval adjusting device are respectively spaced from the upper parts of the outer side ends of the two sliding tables 4-7-1 and 4-7-2 by a certain distance, and the four guide grooves 4-8 play a role in guiding the back-and-forth movement of the two sliding tables 4-7-1 and 4-7-2. After the two sliding tables 4-7-1 and 4-7-2 of the automatic plate turning interval adjusting device are installed, a certain distance is arranged between the front end of one sliding table 4-7-1 at the rear end of the rack and the rear end of one sliding table 4-7-2 at the front end of the rack after the front end of the one sliding table 4-7-1 and the rear end of the other sliding table 4-7-2 are close to each other.
As shown in figures 1, 2, 3, 4, 5 and 6, when a servo motor 4-1 of the automatic plate turning interval adjusting device drives a screw rod 4-5 to rotate clockwise through a driving belt pulley 4-4, a V-belt 4-2 and a driven belt pulley 4-3, a left-handed external thread at the rear part of the screw rod 4-5 acts on a left-handed internal thread of a sliding table 4-7-1 at the rear end of a frame, one sliding table 4-7-1 at the rear end of the frame 1-1 slides towards the front end of the frame 1-1, a right-handed external thread at the front part of the screw rod 4-5 acts on a right-handed internal thread of one sliding table 4-7-2 at the front end of the frame 1-1, one sliding table 4-7-2 at the front end of the frame 1-1 slides towards the rear end of the frame, the distances between the, when the servo motor 4-1 drives the screw rod 4-5 to rotate anticlockwise through the driving belt pulley 4-4, the V-belt 4-2 and the driven belt pulley 4-3, a left-handed external thread at the rear part of the screw rod 4-5 acts on a left-handed internal thread of one sliding table 4-7-1 at the rear end of the rack 1-1, one sliding table 4-7-1 at the rear end of the rack 1-1 slides towards the rear end of the rack 1-1, a right-handed external thread at the front part of the screw rod 4-5 acts on a right-handed internal thread of one sliding table 4-7-2 at the front end of the rack 1-1, one sliding table 4-7-2 at the front end of the rack 1-1 slides towards the front end of the rack, and the distance between the two sliding tables. The upper end of the slotting turning plate is provided with an open slot 5-1 which is distributed from front to back, the upper parts of the left and right ends of the open slot 5-1 are respectively provided with an internal thread opening 5-2, the lower end of the slotting turning plate 5 is provided with a shaft lever 5-3 from top to bottom, the upper end of the right side of the circular platform turning plate 6 is longitudinally provided with an open slot 6-1, the upper end of the front side of the circular platform turning plate is transversely provided with an open slot as a limiting slot 6-2, the width between the top and the bottom of the circular platform turning plate limiting slot 6-2 is narrower than the width between the top and the bottom of the open slot 6-1 at the upper end of the right side of the circular platform turning plate, the lower end of the circular platform turning plate 6 is provided with a shaft lever 6-3 from top to bottom, the shaft levers 5-3, the shaft rods 6-3 at the lower ends of the two circular truncated cone turning plates are respectively sleeved in shaft holes in the middle parts of the sliding tables 4-7-1 and 4-7-2 from top to bottom, the two circular truncated cone turning plates 6 are arranged at the upper ends of the middle parts of the two sliding tables 4-7-1 and 4-7-2, the outer diameters of the shaft rods at the lower ends of the two slotting turning plates 5 and the circular truncated cone turning plates 6 are smaller than the inner diameters of shaft holes in the middle parts of the sliding tables 4-7-1 and 4-7-2 from top to bottom, and the two slotting turning plates 5 and the circular truncated cone turning plates 6 can freely rotate along the shaft holes in the.
As shown in figures 1, 2, 3, 4, 5 and 6, when the invention is used for testing the bending degree of a positive and negative steel bar pattern with a certain angle, firstly, shaft rods 5-3 at the lower ends of two slotted turning plates 5 are respectively sleeved in shaft holes distributed in the middle parts of two sliding tables 4-7-1 and 4-7-2 from top to bottom, then the front and rear ends of a pattern steel bar 10 are respectively placed in an open slot 5-1 at the upper ends of the two slotted turning plates from front to back, then four fixing screws respectively penetrate through open holes at the left and right ends of two fixing clamps and are screwed into internal threads of the open holes 5-2 at the upper parts of the left and right ends of the two slotted turning plates, the steel bar pattern 10 is arranged between the upper ends of the two slotted turning plates 5 (a backing plate is added between the rear upper end of the open slot 5-1 of one slotted turning plate at the rear end and the lower end of, the front part of the sample steel bar can be driven to freely move back and forth through the opening groove of the opening groove turning plate 5 at the front end). The positions of two sets of hydraulic oil cylinders 3-1 and 3-2 are fixed, and during the test, by operating the PLC2, the first power supply output end and the second power supply output end of the PLC2 alternately output power supplies to control the two electromagnetic directional valves to be alternately electrified to work, therefore, the bending core 7 and the backward bending head 8 at the front ends of the left and right sets of hydraulic cylinders 3-1 and 3-2 plungers at the upper end of the frame 1-1 of the horizontal type steel bar bending testing machine body are controlled to alternately stretch and contract to act on the left and right side ends of the steel bar pattern 10, so that the purpose of repeatedly bending the steel bar pattern 10 is achieved (consistent with the working principle of the existing hydraulic working equipment, when two electromagnetic directional valves are respectively electrified to work, hydraulic oil is respectively output to enter the rear ends of hydraulic cylinders of the two sets of hydraulic cylinders 3-1 and 3-2, and respectively flows back the hydraulic oil in the front ends of the hydraulic cylinders into the electric hydraulic oil pumps, so that the plungers of the hydraulic cylinders 3-1. When the bending test is needed to be performed on the steel bar pattern 10 from front to back as many test points as possible and the performance of the steel bar is tested (namely the bending test of the steel bar pattern 10 under different spans) and when the pattern steel bar 10 is close to the relative rear part of the rack 1-1 and the bending test of the steel bar pattern 10 under the relative small span is performed (namely the bending test of the steel bar pattern 10 under the relative small span), the servo motor 4-1 is controlled to rotate clockwise by operating the third power output end output power supply of the PLC2, so that the servo motor 4-1 drives the screw rod 4-5 to rotate clockwise (the outer diameter of the driving pulley 4-4 is smaller than that of the driven pulley 4-3, the power output by the rotating shaft of the servo motor 4-1 can be reduced and the torque can be increased) through the driving pulley 4-4, the driven pulley 4-3 and the left-hand external thread at the 1, one sliding table 4-7-1 at the rear end of a rack 1-1 slides to the front end of the rack 1-1, a right-handed external thread at the front part of a screw rod 4-5 acts on a right-handed internal thread at one sliding table 4-7-2 at the front end of the rack 1-1, one sliding table 4-7-1 at the front end of the rack 1-1 slides to the rear end of the rack 1-1, the distances between the two sliding tables 4-7-1 and 4-7-2 are close, the relative rear part of a pattern steel bar 10 is close to the front ends of left and right hydraulic oil cylinders 3-1 and 3-2 plungers at the upper end of the rack 1-1 of a horizontal steel bar bending tester body, and after a tester feels the position is enough, a power supply output by a third power supply output end of a PLC2 is turned off (data can be, the output end of the third power supply of the PLC2 stops outputting power supply), the servo motor 4-1 stops working, then, the relative rear part of the pattern steel bar is fixed at the side ends of the plungers of the left and right hydraulic cylinders 3-1 and 3-2 at the upper end of the frame 1-1 of the horizontal steel bar bending tester body, the output ends of the first power supply and the second power supply of the PLC2 alternately output power supply to control the two electromagnetic directional valves to alternately get electricity to work during the test by operating the PLC2, therefore, the bending core 7 and the backward bending pressure head 8 at the front ends of the left and right sets of hydraulic cylinders 3-1 and 3-2 plungers at the upper end of the frame 1-1 of the horizontal type steel bar bending testing machine body are controlled to alternately stretch and contract to act on the left and right side ends of the relative rear part of the steel bar pattern 10, and the purpose of repeatedly bending the relative rear part of the steel bar pattern 10 (namely the purpose of bending test of the steel bar pattern under a relatively small span) is achieved. When a bending test of the relatively front part of the model steel bar 10 close to the rack 1-1 is carried out (namely a bending test of the steel bar model 10 under relatively large span), a third power output end of the PLC2 is operated to control the servo motor 4-1 to rotate anticlockwise, then the servo motor 4-1 drives the screw rod 4-5 to rotate anticlockwise through the driving belt pulley 4-4, the V-belt 4-2 and the driven belt pulley 4-3, the left-handed external thread at the rear part of the screw rod 4-5 acts on the left-handed internal thread of one sliding table 4-7-1 at the rear end of the rack, one sliding table 4-7-1 at the rear end of the rack 1-1 slides towards the rear end of the rack 1-1, the right-handed external thread at the front part of the screw rod 4-5 acts on the right-handed internal thread of one sliding, one sliding table 4-7-1 at the front end of a rack 1-1 slides to the front end of the rack, the distance between the two sliding tables 4-7-1 and 4-7-2 is increased, the relative front part of a pattern steel bar 10 is close to the front ends of left, right two sets of hydraulic oil cylinders 3-1 and 3-2 plungers at the upper end of the rack 1-1 of a horizontal steel bar bending tester body, a tester turns off a power supply output by a third power supply output end of a PLC2 (or data is stored in the PLC in advance after the position of the pattern steel bar 10 is enough, the output of the power supply by the third power supply output end of the PLC2 is stopped), a servo motor 4-1 stops working, and then the relative front part of the pattern steel bar 10 is fixed at the plunger side ends of the left, right two hydraulic oil cylinders 3-1 and 3-2, during the test, the PLC2 is operated, the first power output end and the second power output end of the PLC2 alternately output power to control the two electromagnetic directional valves to be alternately electrified, so that the bending core 7 and the counter bending pressure head 8 at the front ends of the left hydraulic cylinder 3-1 and the right hydraulic cylinder 3-1 and the 3-2 plunger at the upper end of the frame 1-1 of the horizontal type steel bar bending test machine body are controlled to alternately stretch and contract to act on the left side end and the right side end of the opposite front end of the steel bar pattern 10, and the purpose of repeatedly bending the opposite front part of the steel bar pattern 10 (namely the purpose of bending test of the. In the invention, a plurality of steel bars 10 with different diameter styles are placed in an open slot 5-1 of the open slot turning plate 5 from top to bottom, and a backing plate is added for fixing, so that 2 to 3 steel bars with different diameter styles can simultaneously complete a positive and negative bending test.
As shown in figures 1, 2, 3, 4, 5 and 6, when a steel bar pattern 0-180-degree bending test is carried out by the invention, two slotting turning plates 5 are taken down from the middle parts of two sliding tables 4-7-1 and 4-7-2, then shaft rods 6-3 at the lower ends of two round platform turning plates 6 are respectively sleeved in shaft holes distributed in the middle parts of the two sliding tables 4-7-1 and 4-7-2 from top to bottom, limiting grooves 6-2 of the two round platform turning plates are correspondingly positioned at the inner side ends, then a pattern steel bar 10 is placed in a longitudinal opening groove 6-1 at the upper right ends of the two round platform turning plates 6, and during the test, a PLC is operated, a first power output end of a first power supply of the PLC2 controls a first electromagnetic directional valve to be electrified to work, so that the front end of a plunger 3-1 at the right part of the upper end of a frame 1-1 of a horizontal steel bar bending test machine Because, 6-2 limiting action of two round platform board turning limiting grooves, the style reinforcing bar 10 can not be run out from top to bottom, so, the style reinforcing bar 10 can be bent left end gradually, and then reach crooked 0-180 experimental purpose, and bending angle is enough, and the experimenter operates PLC2 and makes the first way power output end of PLC2 stop output power (also can be that the PLC is inside to be deposited in advance data, and the first way power output end of PLC2 stops output power after the angle of bending of style reinforcing bar 10 is enough). When the automatic bending test device works, under the control of the PLC2, plungers at the front ends of two hydraulic oil cylinders 3-1 and 3-2 can alternately stretch and contract to act on two side ends of a style steel bar 10, so that the direction of the style steel bar 10 on the left side and the right side of two slotted turning plates 5 does not need to be manually and repeatedly adjusted, the automatic bending test device 4 is further provided, the span of the style steel bar 10 between the upper ends of the two slotted turning plates 5 can be automatically adjusted, manual adjustment is not needed, the slotted turning plates 5 and the circular truncated cone turning plates 6 are further provided, the bending test of the style steel bar 10 at a certain positive and negative angle can be realized, and the bending test of a steel bar style of 0-. Based on the above, the invention has good application prospect.
Having shown and described the basic principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (3)
1. A multifunctional horizontal steel bar bending tester comprises a horizontal steel bar bending tester body, a PLC and two sets of hydraulic oil cylinders, wherein the two sets of hydraulic oil cylinders are respectively connected with liquid outlet ends of two electromagnetic directional valves matched with the two sets of hydraulic oil cylinders through four hydraulic oil pipes, liquid inlet ends of the two electromagnetic directional valves are connected with liquid outlet ends of an electric hydraulic oil pump of the horizontal steel bar bending tester body through another four hydraulic oil pipes, first and second power output ends of the PLC are respectively connected with power input ends of the two electromagnetic directional valves through leads, the PLC is arranged in an element box of the horizontal steel bar bending tester body, the multifunctional horizontal steel bar bending tester is characterized in that the two sets of hydraulic oil cylinders are respectively arranged in the middle of the left side and the right side of the upper end of a frame of the horizontal steel bar bending tester body, the PLC is operated, respectively outputting hydraulic oil to enter the rear ends of hydraulic cylinders of the two sets of hydraulic cylinders, enabling the hydraulic oil in the front end of the hydraulic cylinder to flow back into the electric hydraulic oil pump, and enabling the left and right sets of hydraulic cylinders at the upper end of a frame of the horizontal steel bar bending tester body and bending cores and backward bending pressure heads at the front ends of plungers to alternately stretch and retract to act on the left and right side ends of a steel bar sample to repeatedly bend the steel bar sample; the left part of the bending core is of a solid structure, the right part of the bending core is of a hollow structure, the right part of the bending core is sleeved at the front end of a hydraulic oil cylinder plunger at the upper right end of a frame of the horizontal steel bar bending testing machine body, a first fixing pin is respectively fixed in a hole at the right part of the bending core and a hole at the left front end of the hydraulic oil cylinder plunger at the upper right end of the frame, the right part of the backward bending pressure head is of a solid structure, the left part of the backward bending pressure head is of a hollow structure, the left part of the backward bending pressure head is sleeved at the front end of the hydraulic oil cylinder plunger at the upper left end of the frame of the horizontal steel bar bending testing machine body, a second fixing pin is respectively fixed in a hole at the left part of the backward bending pressure head and a hole at the right front end of the hydraulic oil cylinder plunger at the upper left end of the frame, the automatic plate turning distance adjusting device is installed in the, the slotting turning plate and the circular truncated cone turning plate are respectively provided with two same plates and are arranged at the upper end of the automatic turning plate interval adjusting equipment.
2. The multifunctional horizontal steel bar bending tester according to claim 1, characterized in that the automatic plate-turning interval adjusting device comprises a servo motor, a V-belt, a driven pulley, a driving pulley, a screw rod, a fixed plate, sliding tables, a guide groove, and a guide shaft rod, wherein the third power output end of the PLC is connected with the power input end of the servo motor through a lead wire, the middle parts of the two sliding tables are respectively provided with an opening as a shaft hole from top to bottom, the left ends of the two sliding tables are respectively provided with an opening as a guide hole from front to back, the right end of the first sliding table is provided with a screw hole with left-handed internal threads from front to back, the right end of the second sliding table is provided with a screw hole with right-handed internal threads from front to back, the middle part of the screw rod is provided with left-handed external threads from one end to back end, the middle part of the screw rod, the front right ends of the two fixed plates are respectively provided with an axle hole, two bearings are respectively sleeved in two axle holes at the front right ends of the two fixed plates, the first sliding table is arranged at the rear part of the screw rod, the second sliding table is arranged at the front part of the screw rod, guide holes at the left ends of the two sliding tables are respectively sleeved on the guide shafts, two openings at the front left ends of the two fixed plates are respectively sleeved on the front end and the rear end of the guide shaft rod, inner rings of the two bearings at the front right ends of the two fixed plates are respectively sleeved on the front end and the rear end of the screw rod, the two fixed plates are arranged at the front end and the rear end of the middle part of a frame of the horizontal steel bar bending testing machine body, a driven belt pulley is arranged at the rear end of the, the driving pulley has L-shaped guide slots, and four guide slots are respectively mounted on the left and right front ends of the frame.
3. The multifunctional horizontal steel bar bending tester of claim 1, wherein the upper end of the slotted turning plate has an open slot distributed from front to back, the upper parts of the left and right ends of the open slot have an internal thread opening, the lower end of the slotted turning plate has a shaft rod from top to bottom, the upper end of the right side of the circular platform turning plate has an open slot longitudinally, the upper end of the front side of the circular platform turning plate has a open slot transversely as a limit slot, the lower end of the circular platform turning plate has a shaft rod from top to bottom, the shaft rods at the lower ends of the two slotted turning plates are respectively sleeved in the shaft holes at the top to bottom of the sliding platform, the shaft rods at the lower ends of the two circular platform turning plates are respectively sleeved in the shaft holes at the top to bottom.
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| CN100557411C (en) * | 2005-12-20 | 2009-11-04 | 上海华龙测试仪器有限公司 | Double work position steel bar cold bending test machine |
| CN201073674Y (en) * | 2007-07-27 | 2008-06-18 | 张惠友 | Steel bar bending machine |
| CN202057556U (en) * | 2011-05-19 | 2011-11-30 | 中国石油集团工程设计有限责任公司 | Bending corrosion fatigue tester |
| CN104819901B (en) * | 2015-04-18 | 2017-10-13 | 中煤张家口煤矿机械有限责任公司 | Scraper plate bend test combined measuring device and application method |
| CN204988909U (en) * | 2015-07-31 | 2016-01-20 | 西安科技大学 | Compound loading test machine of panel torsional bending |
| KR20170028157A (en) * | 2015-09-03 | 2017-03-13 | 주식회사 포스코 | Apparatus for simulation of welding part quality evaluation |
| CN106442165A (en) * | 2016-08-31 | 2017-02-22 | 北京创然铝塑工业有限公司 | Four-directional anti-bending machine |
| CN207051100U (en) * | 2017-08-16 | 2018-02-27 | 中国石油天然气集团公司 | A kind of metal material bending test device |
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