Hydraulic testing device and method thereof

Abstract

The present invention relates to the field of hydraulics, and particularly to a hydraulic testing device and a method thereof. The technical problem to be solved by the present invention is that the clamping force of the mechanical clamping device is relatively small, which is likely to cause inaccurate test results or the sliding of the specimen during the test; the hydraulic clamping device requires a dedicated hydraulic system, which increases the cost and complexity of the equipment, and requires regular maintenance to ensure its normal operation and stability; when replacing the fixture or clamping the steel bar, the device needs to perform a power-off operation. If the clamping device falls at this time, it is easy to cause personnel fright or injury to the staff. It includes a housing, the inner side of the housing is fixedly connected with a guide post, the upper end of the guide post is fixedly connected with an upper gate plate, and the outer side of the lower end of the guide post is fixedly connected with a fixed platform. By setting the upper gate plate, the lower gate plate and the pulling mechanism, the pulling handle is stretched outwards. The outward movement of the pulling handle drives the pulling rack to move outwards. The pulling rack is meshed with the pulling gear through teeth.

Description

Technical Field

[0001] The present invention relates to the field of hydraulic pressure, and in particular to a hydraulic pressure testing device and a method thereof. Background Art

[0002] Hydraulic testing devices are mainly used for performance testing of hydraulic components such as hydraulic pumps, hydraulic motors, hydraulic valves, hydraulic cylinders, etc. These hydraulic components are key components in the hydraulic system, and their performance directly affects the operation of the entire hydraulic system. Through the hydraulic testing device, various performance indicators of hydraulic components, such as pressure, tension, flow, power, efficiency, etc., can be accurately measured, and durability tests can be performed to evaluate their reliability and life in actual use.

[0003] In the construction field, hydraulic testing equipment can be used to determine the maximum force that a steel bar can withstand during stretching, i.e., its tensile strength. Tensile testing can also help evaluate the yield strength of steel bars, i.e., the maximum stress that a steel bar can withstand before significant plastic deformation occurs. Tensile testing can also help understand the ductility of steel bars during stretching.

[0004] In the prior art, the clamping force of the mechanical clamping device of the hydraulic testing device is relatively small, which may easily cause inaccurate test results or slippage of the sample during the test; and the hydraulic clamping device needs to be equipped with a special hydraulic system, which increases the cost and complexity of the equipment and requires regular maintenance and servicing to ensure its normal operation and stability; in addition, when replacing the clamp or clamping the steel bars, the hydraulic testing device needs to be powered off. If the clamping device falls at this time, it may easily cause shock or injury to the staff. Summary of the invention

[0005] (1) Technical issues to be resolved

[0006] The present invention aims to overcome the shortcomings that the clamping force of the mechanical clamping device is relatively small, which may easily cause inaccurate test results or sliding of the sample during the test; the hydraulic clamping device needs to be equipped with a special hydraulic system, which increases the cost and complexity of the equipment, and requires regular maintenance and servicing to ensure its normal operation and stability; when replacing the clamp or clamping the steel bars, the device needs to be powered off. If the clamping device falls at this time, it may easily cause scares or injuries to the staff. The technical problem to be solved by the present invention is to provide a hydraulic testing device and a method thereof.

[0007] (2) Technical solution

[0008] In order to solve the above technical problems, the present invention provides a hydraulic testing device and method thereof, comprising a shell, four guide columns are fixedly connected to the inner side of the shell, an upper gate plate is fixedly connected to the upper end of the guide column, a fixed platform is fixedly connected to the outer side of the lower end of the guide column, a lower gate plate is slidably connected to the outer side of the guide column and located between the fixed platform and the upper gate plate, a hydraulic telescopic rod is arranged on the lower side of the lower gate plate, a pulling mechanism is arranged inside the upper gate plate and the lower gate plate, a locking mechanism is arranged on the side of the pulling mechanism, a follower block is arranged inside the upper gate plate and the lower gate plate, a quick-change mechanism is arranged on the side of the follower block, and an anti-falling mechanism is arranged on the side of the lower gate plate. Mechanism, the pulling mechanism includes a plurality of pulling sleeves, and the plurality of pulling sleeves are rotatably connected to the upper gate plate and the lower gate plate. The interior of the pulling sleeve is connected to a pulling column through a thread, and the internal threads of the pulling sleeves on both sides rotate in opposite directions. The outer side of the pulling sleeve is fixedly connected to a pulling gear, and the side of the upper gate plate and the lower gate plate are provided with two square through holes, and the pulling gear is rotatably connected in the square through holes. Two pulling racks are also slidably connected in the square through holes, and the opposite sides of the two pulling racks are fixedly connected with a plurality of teeth, and the pulling rack is meshed with the pulling gear through the teeth, and one end of the two pulling racks is fixedly connected to a pulling handle.

[0009] Preferably, the locking mechanism includes a limiting sleeve, which is fixedly connected to the side surfaces of the upper gate plate and the lower gate plate, the other end of the limiting sleeve is slidably connected to a locking shaft, one end of the locking shaft is fixedly connected to a circular block, a return spring is provided on the outside of the locking shaft and between the circular block and the limiting sleeve, the other end of the locking shaft is fixedly connected to a locking block, a plurality of teeth are provided at both ends of the locking block, the locking block is meshed with the pulling rack through the teeth, the end of the locking shaft is rotatably connected to a locking plate, one end of the upper surface of the locking plate is fixedly connected to a locking handle, and locking grooves are provided on the inner sides of the upper gate plate, the lower gate plate and the corresponding locking blocks.

[0010] Preferably, the anti-fall mechanism includes an anti-fall shoe, and the lower gate plate is provided with a plurality of symmetrical anti-fall grooves, the anti-fall shoe is slidably connected in the anti-fall groove, the anti-fall groove is fitted with the guide column, the outer side of the guide column is provided with a plurality of annular grooves, the arc-shaped inner side of the anti-fall shoe is provided with a semi-annular groove matching the annular groove of the guide column, the other side of the anti-fall shoe is rotatably connected with an anti-fall screw, the anti-fall screw passes through the lower gate plate and is threadedly connected to the lower gate plate.

[0011] Preferably, a trapezoidal slide groove is provided on the inner side of the upper gate plate and the lower gate plate, two oblique T-shaped slide grooves are provided on the side of the trapezoidal slide groove, an oblique T-shaped block is slidably connected in the oblique T-shaped slide groove, the other side of the oblique T-shaped block is fixedly connected to the follower block, the lower surface of the follower block is fixedly connected to the upper surface of the pulling column, the cross-section of the follower block is a right-angled trapezoid, and T-shaped slide grooves are provided on the opposite sides of the two follower blocks.

[0012] Preferably, T-shaped blocks are slidably connected in the T-shaped grooves of the two follower blocks, wherein a left clamping plate is fixedly connected to the side of one of the T-shaped blocks, and a right clamping plate is fixedly connected to the side of the other T-shaped block, and triangular grooves are provided in the middle of the left clamping plate and the right clamping plate, and the cross-sections of the left clamping plate and the right clamping plate are F-shaped, and the left clamping plate and the right clamping plate are symmetrically staggered.

[0013] Preferably, the quick-change mechanism includes a pull rivet, the pull rivet is threadedly connected to the follower block, the outer side of the pull rivet is rotatably connected to a clamping plate, a clamping spring is sleeved on the outer side of the pull rivet and between the pull rivet and the clamping plate, the other end of the side of the clamping plate is fixedly connected to a quick-change handle, the other side of the follower block is threadedly connected to a clamping screw, the outer side of the clamping screw is rotatably connected to another clamping plate, the cross-section of the clamping plate is elliptical, and elliptical grooves are provided on both sides of the follower block and the T-shaped block, and the size of the elliptical grooves is consistent with the size of the clamping plate.

[0014] Preferably, the inside of the outer shell is fixedly connected with two hydraulic telescopic rods, the output ends of the hydraulic telescopic rods are slidably connected to the fixed platform, the output ends of the hydraulic telescopic rods pass through the fixed platform and are rotatably connected to a connecting seat via a rotating shaft, and the connecting seat is fixedly connected to the lower surface of the lower gate plate.

[0015] Preferably, a protective door is rotatably connected to one side of the shell via a rotating shaft, the protective door is made of a metal mesh, and a base is fixedly connected to the lower end of the shell.

[0016] Preferably, the upper end of the housing is threadedly connected with two lifting rings.

[0017] Preferably, a method of hydraulic testing a device comprises the following steps:

[0018] S1. Use the lifting ring to hoist the device to a designated position, first open the protective door, adjust the position of the lower gate according to the length of the steel bar to be measured, start the hydraulic telescopic rod to extend upward, the output end of the hydraulic telescopic rod drives the connecting seat to move upward, the connecting seat moves upward to push the lower gate to move upward, and when the lower gate moves to a suitable height, close the hydraulic telescopic rod;

[0019] S2, using a wrench to rotate the anti-falling screw toward the guide column, the anti-falling screw moving toward the guide column pushes the anti-falling shoe to move toward the guide column, the anti-falling shoe engages with the annular groove on the outer side of the guide column, and at this time the anti-falling mechanism locks the height of the lower gate plate;

[0020] S3, power off the device, and then place the steel bar to be tested in the triangular chute of the middle fixture of the upper gate plate and the lower gate plate;

[0021] S4, stretching the pulling handle outward, the pulling handle moves outward and drives the pulling rack to move outward, the pulling rack is meshed with the pulling gear through teeth, the pulling rack moves outward and drives the pulling gears on both sides to rotate, the pulling gears on both sides rotate in opposite directions, the pulling gears rotate and drive the pulling sleeve to rotate, under the action of the internal thread of the pulling sleeve, the pulling sleeve rotates and drives the pulling column to move upward, at this time, the pulling column moves upward and drives the follower block to move upward, the follower block moves upward and drives the clamp to move upward, and the clamp moves upward to clamp the steel bar;

[0022] S5, pull the locking handle upward, the locking handle moves upward to drive the locking plate out of the locking groove, turn the locking handle to rotate 90 degrees horizontally, the locking handle rotates 90 degrees horizontally to drive the locking plate to rotate 90 degrees horizontally, release the locking handle, the reset spring releases the pressure to push the locking shaft downward, the locking shaft moves downward to drive the locking block to move downward, the locking block moves downward to mesh with the pulling racks on both sides, and the locking mechanism locks the pulling mechanism;

[0023] S6. At this time, the height locking of the gate plate by the anti-fall mechanism is released, the protection door is closed, the test parameters are set, and the hydraulic telescopic rod is started to perform a tensile test on the steel bar to be tested.

[0024] (3) Beneficial effects

[0025] 1. By setting the upper gate, the lower gate and the pulling mechanism, the pulling handle is stretched outward, and the pulling handle moves outward to drive the pulling rack to move outward. The pulling rack is meshed and connected with the pulling gear through the teeth. The pulling rack moves outward to drive the pulling gears on both sides to rotate. The pulling gears on both sides rotate in opposite directions. The rotation of the pulling gear drives the pulling sleeve to rotate. Under the action of the internal thread of the pulling sleeve, the pulling sleeve rotates to push the pulling column upward, thereby increasing the clamping force of the fixture, preventing the tested steel bar from tilting during the test, resulting in inaccurate test results, and reducing equipment costs;

[0026] 2. By setting a locking mechanism, pull the locking handle upward, the locking handle moves upward to drive the locking plate out of the locking groove, turn the locking handle to rotate 90 degrees horizontally, the locking handle rotates 90 degrees horizontally to drive the locking plate to rotate 90 degrees horizontally, release the locking handle, the reset spring releases the pressure to push the locking shaft downward, the locking shaft moves downward to drive the locking block to move downward, the locking block moves downward to engage with the pulling racks on both sides, which simplifies the structure of the device, ensures the smooth operation of the equipment, and also ensures the authenticity and validity of the test results;

[0027] 3. By setting up the anti-fall mechanism, use a wrench to turn the anti-fall screw to move the guide column. The movement of the anti-fall screw to the guide column pushes the anti-fall shoe to move the guide column. The anti-fall shoe engages with the annular groove on the outside of the guide column to prevent the lower gate from falling, thereby ensuring the physical and mental health of the staff and the safety of their lives and property. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0030] Figure 3 It is a schematic diagram of the lower gate structure of the present invention;

[0031] Figure 4 It is a schematic diagram of the pulling mechanism structure of the present invention;

[0032] Figure 5 It is a schematic diagram of the locking mechanism structure of the present invention;

[0033] Figure 6 It is a schematic diagram of the structure of the anti-falling mechanism of the present invention;

[0034] Figure 7 It is a schematic diagram of the structure of the quick-change mechanism of the present invention;

[0035] Figure 8 It is a schematic diagram of the clamp structure of the present invention;

[0036] Fig. 9 It is a schematic diagram of the structure of the hydraulic telescopic rod of the present invention.

[0037] The markings in the attached drawings are: 1-housing, 2-protective door, 3-base, 4-lifting ring, 5-upper gate, 6-lower gate, 7-fixed platform, 8-hydraulic telescopic rod, 801-connecting seat, 9-guide column, 10-rebar, 11-clamp, 1101-left clamp, 1102-right clamp, 12-follower block, 13-quick change mechanism, 1301-quick change handle, 1302-pressing plate, 1303-pull nail, 1304-pressing spring, 1305-pressing screw, 14 -Anti-fall mechanism, 1401-anti-fall groove, 1402-anti-fall tile, 1403-anti-fall screw, 15-locking mechanism, 1501-locking block, 1502-locking shaft, 1503-return spring, 1504-locking groove, 1505-limiting sleeve, 1506-locking plate, 1507-locking handle, 16-pulling mechanism, 1601-pulling column, 1602-pulling gear, 1603-pulling rack, 1604-pulling handle, 1605-pulling sleeve. DETAILED DESCRIPTION

[0038] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0039] A hydraulic testing device and method thereof, such as Figure 1-Figure 4As shown, it includes a housing 1, four guide pillars 9 are fixedly connected to the inner side of the housing 1, an upper gate plate 5 is fixedly connected to the upper end of the guide pillar 9, a fixed platform 7 is fixedly connected to the outer side of the lower end of the guide pillar 9, a lower gate plate 6 is slidably connected to the outer side of the guide pillar 9 and located between the fixed platform 7 and the upper gate plate 5, a hydraulic telescopic rod 8 is arranged at the lower side of the lower gate plate 6, and a pulling mechanism 16 is arranged inside the upper gate plate 5 and the lower gate plate 6. By setting the pulling mechanism 16, the follower block 12 is pushed to drive the left clamping plate 1101 The left and right clamping plates 1101 and 1102 move toward each other, thereby clamping the steel bar 10 to be measured. A locking mechanism 15 is provided on the side of the pulling mechanism 16. By providing the locking mechanism 15, the pulling mechanism 16 is locked to prevent the left clamping plate 1101 and the right clamping plate 1102 from shrinking and loosening. A follower block 12 is provided inside the upper gate plate 5 and the lower gate plate 6. A quick-change mechanism 13 is provided on the side of the follower block 12. By providing the quick-change mechanism 13, the clamp 11 can be quickly changed according to the diameter of the steel bar 10 to be measured. The side of the lower gate plate 6 is provided with an anti-falling mechanism 14, which is provided to prevent the lower gate plate 6 from falling after the device is powered off, causing fright or injury to the staff. The pulling mechanism 16 includes a plurality of pulling sleeves 1605, which are rotatably connected to the upper gate plate 5 and the lower gate plate 6. The interior of the pulling sleeves 1605 is connected to the pulling column 1601 through a thread, and the internal threads of the pulling sleeves 1605 on both sides rotate in opposite directions. A pulling gear 1602 is fixedly connected to the outer side surface, and two square through holes are provided on the sides of the upper gate plate 5 and the lower gate plate 6. The pulling gear 1602 is rotatably connected in the square through holes, and two pulling racks 1603 are slidably connected in the square through holes. A plurality of teeth are fixedly connected to the opposite sides of the two pulling racks 1603, and the pulling racks 1603 are meshed with the pulling gear 1602 through the teeth. A pulling handle 1604 is fixedly connected to one end of the two pulling racks 1603.

[0040] like Figure 5 As shown, the locking mechanism 15 includes a limiting sleeve 1505, which is fixedly connected to the side surfaces of the upper gate plate 5 and the lower gate plate 6, and the other end of the limiting sleeve 1505 is slidably connected to a locking shaft 1502, one end of the locking shaft 1502 is fixedly connected to a circular block, a return spring 1503 is sleeved on the outer side of the locking shaft 1502 and located between the circular block and the limiting sleeve 1505, and the other end of the locking shaft 1502 is fixedly connected to a locking block 1501, and a plurality of tooth grooves are provided at both ends of the locking block 1501, and the locking block 1501 is meshed and connected with the pulling rack 1603 through the tooth grooves, and the end of the locking shaft 1502 is rotatably connected to a locking plate 1506, and one end of the upper surface of the locking plate 1506 is fixedly connected to a locking handle 1507, and a locking groove 1504 is provided on the inner side surfaces of the upper gate plate 5 and the lower gate plate 6 corresponding to the locking block 1501.

[0041] like Figure 5 , Figure 6 As shown, the anti-fall mechanism 14 includes an anti-fall tile 1402, and a plurality of symmetrical anti-fall grooves 1401 are provided on the lower gate plate 6. The anti-fall tile 1402 is slidably connected in the anti-fall groove 1401, and the anti-fall groove 1401 is fitted with the guide column 9. A plurality of annular grooves are provided on the outer side of the guide column 9, and a semi-annular groove matching the annular groove of the guide column 9 is provided on the arc-shaped inner side of the anti-fall tile 1402. The other side of the anti-fall tile 1402 is rotatably connected with an anti-fall screw 1403, and the anti-fall screw 1403 passes through the lower gate plate 6 and is threadedly connected to the lower gate plate 6.

[0042] like Figure 7 , Figure 8 As shown, the inner sides of the upper gate plate 5 and the lower gate plate 6 are provided with a trapezoidal slide groove, and the sides of the trapezoidal slide groove are provided with two oblique T-shaped slide grooves, and an oblique T-shaped block is slidably connected in the oblique T-shaped slide groove, and a follower block 12 is fixedly connected on the other side of the oblique T-shaped block, and the bottom surface of the follower block 12 is fixedly connected to the upper surface of the pulling column 1601, and the cross section of the follower block 12 is a right-angled trapezoid, and T-shaped slide grooves are provided on the opposite sides of the two follower blocks 12, and a T-shaped block is slidably connected in the T-shaped slide groove, and the side of one of the T-shaped blocks is fixedly connected to the left clamping plate 110 1. The side of the other T-shaped block is fixedly connected with a right clamping plate 1102. A triangular sliding groove is provided in the middle of the left clamping plate 1101 and the right clamping plate 1102. The triangular sliding groove enables the clamp to position the steel bar to be measured more accurately. The cross-sections of the left clamping plate 1101 and the right clamping plate 1102 are F-shaped. The left clamping plate 1101 and the right clamping plate 1102 are symmetrically staggered. When the steel bar 10 to be measured is clamped, the staggered left clamping plate 1101 and the right clamping plate 1102 can more effectively fix the steel bar 10 to be measured.

[0043] like Figure 7 , Figure 8 As shown, the quick-change mechanism 13 includes a rivet 1303, which is threadedly connected to the follower block 12, and the outer side of the rivet 1303 is rotatably connected to a clamping plate 1302. A clamping spring 1304 is sleeved on the outer side of the rivet 1303 and located between the rivet 1303 and the clamping plate 1302. The other end of the side of the clamping plate 1302 is fixedly connected to a quick-change handle 1301, and the other side of the follower block 12 is threadedly connected to a clamping screw 1305, and the outer side of the clamping screw 1305 is rotatably connected to another clamping plate 1302. The cross-section of the clamping plate 1302 is elliptical, and elliptical grooves are provided on both sides of the follower block 12 and the T-block, and the size of the elliptical grooves is consistent with the size of the clamping plate 1302.

[0044] like Fig. 9As shown, two hydraulic telescopic rods 8 are fixedly connected inside the shell 1, and the output ends of the hydraulic telescopic rods 8 are slidably connected to the fixed platform 7. The output ends of the hydraulic telescopic rods 8 pass through the fixed platform 7 and are rotatably connected to a connecting seat 801 via a rotating shaft. The connecting seat 801 is fixedly connected to the lower surface of the lower gate plate 6.

[0045] like Figure 1 As shown, a protective door 2 is rotatably connected to one side of the shell 1 through a rotating shaft. The protective door 2 is made of a metal mesh, which is convenient for observing the steel bar 10 under test and prevents debris from hurting the staff when the steel bar 10 under test breaks. The lower end of the shell 1 is fixedly connected to a base 3, and the upper end of the shell 1 is connected to two lifting rings 4 through threads. The device is hoisted and moved to a specified position through the lifting rings 4.

[0046] Working principle: When the device is in use, the lifting ring 4 can be used to hoist the device to the specified position, and the protective door 2 is opened first. The protective door 2 is made of a metal mesh, which is convenient for observing the steel bar 10 to be tested, and at the same time prevents the debris of the steel bar 10 to be tested from injuring the staff when it breaks. According to the length of the steel bar 10 to be tested, the hydraulic telescopic rod 8 is used to lift the lower gate plate 6 to a suitable height, and the anti-fall mechanism 14 is used to lock the height of the lower gate plate 6, and the device is powered off. Then, the steel bar 10 to be tested is placed in the triangular chute of the clamp 11 in the middle of the upper gate plate 5 and the lower gate plate 6, and the pulling mechanism 16 is used to push the follower block 12 to slide upward. The upward sliding of the follower block 12 drives the clamp 11 to slide upward. Under the action of the trapezoidal chute of the upper gate plate 5 and the lower gate plate 6, the clamp 11 clamps the steel bar 10 to be tested, and then the locking mechanism 15 is used to lock the pulling mechanism 16. At this time, the steel bar 10 to be tested is fixed by the clamp 11, and the height of the lower gate plate 6 is released by the anti-fall mechanism 14. Lock, close the protective door 2, set the test parameters, start the hydraulic telescopic rod 8 to retract downward, the hydraulic telescopic rod 8 retracts downward to pull the lower gate plate 6 downward, and under the action of the trapezoidal slides of the upper gate plate 5 and the lower gate plate 6, the clamp 11 clamps tighter and tighter. When the tested steel bar 10 cannot withstand the tension and breaks, record the key parameters at this time, open the protective door 2, first remove the broken steel bar 10 clamped by the upper gate plate 5, and then remove the broken steel bar 10 clamped by the lower gate plate 6, release the locking mechanism 15 to lock the pulling mechanism 16, and push the pulling mechanism 16 to move downward. The pulling mechanism 16 moves downward and drives the follower block 12 to slide downward. The follower block 12 slides downward and drives the clamp 11 to slide downward. The clamp 11 slides downward to release the clamping of the broken steel bar 10. At this time, the broken steel bar 10 is removed, and the next round of steel bar 10 testing can be carried out. When the diameter of the steel bar 10 changes, use the quick-change mechanism 13 to replace the clamp 11 to adapt to the diameter of the steel bar 10 to be tested.

[0047] When the hydraulic telescopic rod 8 is used to lift the lower gate plate 6 to a suitable height, the hydraulic telescopic rod 8 is started to extend upward, and the output end of the hydraulic telescopic rod 8 drives the connecting seat 801 to move upward, and the connecting seat 801 moves upward to push the lower gate plate 6 to move upward. After the lower gate plate 6 moves to a suitable height, the hydraulic telescopic rod 8 is closed, and the hydraulic telescopic rod 8 is used to retract downward to pull the lower gate plate 6 to move downward. The hydraulic telescopic rod 8 is started to retract downward, and the output end of the hydraulic telescopic rod 8 drives the connecting seat 801 to move downward, and the connecting seat 801 moves downward to push the lower gate plate 6 to move downward. When the tested steel bar 10 is broken, the hydraulic telescopic rod 8 is closed.

[0048] When the anti-fall mechanism 14 is used to lock the height of the lower gate plate 6, a wrench is used to rotate the anti-fall screw 1403 toward the guide column 9, and the anti-fall screw 1403 moves toward the guide column 9, pushing the anti-fall tile 1402 to move toward the guide column 9, and the anti-fall tile 1402 engages with the annular groove on the outside of the guide column 9. At this time, the anti-fall mechanism 14 locks the height of the lower gate plate 6.

[0049] When the pulling mechanism 16 is used to push the follower block 12 to slide upward, the pulling handle 1604 is stretched outward, and the pulling handle 1604 moves outward, driving the pulling rack 1603 to move outward. The pulling rack 1603 is meshed with the pulling gear 1602 through teeth. The pulling rack 1603 moves outward and drives the pulling gears 1602 on both sides to rotate. The pulling gears 1602 on both sides rotate in opposite directions. The rotation of the pulling gear 1602 drives the pulling sleeve 1605 to rotate. Under the action of the internal thread of the pulling sleeve 1605, the pulling sleeve 1605 rotates to push the pulling column 1601 to move upward. At this time, the upward movement of the pulling column 1601 pushes the follower block 12 to move upward.

[0050] When the locking mechanism 15 is used to lock the pulling mechanism 16, the locking handle 1507 is pulled upward, and the locking handle 1507 moves upward to drive the locking plate 1506 to disengage from the locking groove 1504. The locking handle 1507 is turned to rotate horizontally 90 degrees. The locking handle 1507 rotates horizontally 90 degrees to drive the locking plate 1506 to rotate horizontally 90 degrees. The locking handle 1507 is released, and the reset spring 1503 releases the pressure to push the locking shaft 1502 to move downward. The locking shaft 1502 moves downward to drive the locking block 1501 to move downward. The locking block 1501 moves downward to drive the locking plate 1506 to move downward. The locking plate 1506 moves downward to drive the locking handle 1507 to move downward. The locking block 1501 moves downward to engage with the pulling racks 1603 on both sides. At this time, the locking mechanism 15 locks the pulling mechanism 16.

[0051] When releasing the height lock of the lower gate plate 6 by the anti-fall mechanism 14, use a wrench to reversely rotate the anti-fall screw 1403 to move in the opposite direction of the guide column 9. The anti-fall screw 1403 moves in the opposite direction of the guide column 9 and pulls the anti-fall shoe 1402 to move in the opposite direction of the guide column 9. The anti-fall shoe 1402 disengages from the annular groove on the outer side of the guide column 9. At this time, the anti-fall mechanism 14 releases the height lock of the lower gate plate 6.

[0052] When the locking mechanism 15 is unlocked from locking the pulling mechanism 16, the locking handle 1507 is pulled upward, and the locking handle 1507 moves upward, driving the locking plate 1506 to move upward, and the locking plate 1506 moves upward, driving the locking shaft 1502 to move upward, and the locking shaft 1502 moves upward to compress the reset spring 1503, and the locking shaft 1502 moves upward to drive the locking block 1501 to move upward, and the locking block 1501 moves upward to disengage from the pulling racks 1603 on both sides, and the locking handle 1507 is turned 90 degrees in the longitudinal direction, and the locking handle 1507 rotates 90 degrees in the longitudinal direction, driving the locking plate 1506 to rotate 90 degrees in the longitudinal direction, and the locking plate 1506 is stuck in the locking groove 1504, and the locking handle 1507 is released. At this time, the locking mechanism 15 is unlocked from locking the pulling mechanism 16.

[0053] When the pulling mechanism 16 is used to push the follower block 12 to slide downward, the pulling handle 1604 is pushed inward, and the inward movement of the pulling handle 1604 drives the pulling rack 1603 to move inward. The pulling rack 1603 is meshed with the pulling gear 1602 through teeth. The inward movement of the pulling rack 1603 drives the pulling gears 1602 on both sides to rotate in the opposite direction. The pulling gears 1602 on both sides rotate in opposite directions. The reverse rotation of the pulling gear 1602 drives the pulling sleeve 1605 to rotate in the opposite direction. Under the action of the internal thread of the pulling sleeve 1605, the reverse rotation of the pulling sleeve 1605 drives the pulling column 1601 to move downward. At this time, the downward movement of the pulling column 1601 pulls the follower block 12 to move downward.

[0054] When using the quick-change mechanism 13 to replace the clamp 11, pull the quick-change handle 1301 outward, the quick-change handle 1301 moves outward, driving the clamping plate 1302 to move outward, and the clamping plate 1302 moves outward to compress the clamping spring 1304, and the quick-change handle 1301 is toggled to rotate 90 degrees in the vertical direction. The quick-change handle 1301 rotates 90 degrees in the vertical direction, driving the clamping plate 1302 to rotate 90 degrees in the vertical direction. At this time, the clamp 11 can be removed, and the clamp 11 to be replaced is inserted into the follower block 12, and the quick-change handle 1301 is rotated 90 degrees in the horizontal direction in the opposite direction. The quick-change handle 1301 rotates 90 degrees in the horizontal direction, driving the clamping plate 1302 to rotate 90 degrees in the horizontal direction, and releasing the quick-change handle 1301. The compression spring releases pressure to push the clamping plate 1302 to slide inward. At this time, the quick-change mechanism 13 locks the clamp 11 to prevent the steel bar 10 from sliding during the test, resulting in inaccurate test results.

[0055] A method for testing a hydraulic device, comprising the following steps:

[0056] S1. Use the lifting ring 4 to hoist the device to the specified position, first open the protective door 2, adjust the position of the lower gate 6 according to the length of the steel bar 10 to be measured, start the hydraulic telescopic rod 8 to extend upward, the output end of the hydraulic telescopic rod 8 drives the connecting seat 801 to move upward, the connecting seat 801 moves upward to push the lower gate 6 to move upward, and after the lower gate 6 moves to a suitable height, close the hydraulic telescopic rod 8;

[0057] S2. Use a wrench to rotate the anti-fall screw 1403 to move the guide column 9. The anti-fall screw 1403 moves the guide column 9 and pushes the anti-fall tile 1402 to move the guide column 9. The anti-fall tile 1402 engages with the annular groove on the outside of the guide column 9. At this time, the anti-fall mechanism 14 locks the height of the lower gate plate 6.

[0058] S3, power off the device, and then place the steel bar 10 to be tested in the triangular chute of the middle fixture 11 of the upper gate plate 5 and the lower gate plate 6;

[0059] S4, stretch the pulling handle 1604 outward, the pulling handle 1604 moves outward and drives the pulling rack 1603 to move outward, the pulling rack 1603 is meshed with the pulling gear 1602 through teeth, the pulling rack 1603 moves outward and drives the pulling gears 1602 on both sides to rotate, the pulling gears 1602 on both sides rotate in opposite directions, the pulling gears 1602 rotate and drive the pulling sleeve 1605 to rotate, under the action of the internal thread of the pulling sleeve 1605, the pulling sleeve 1605 rotates and drives the pulling column 1601 to move upward, at this time, the pulling column 1601 moves upward and drives the follower block 12 to move upward, the follower block 12 moves upward and drives the clamp 11 to move upward, the clamp 11 moves upward to clamp the steel bar 10;

[0060] S5, pull the locking handle 1507 upward, the locking handle 1507 moves upward to drive the locking plate 1506 out of the locking groove 1504, turn the locking handle 1507 to rotate 90 degrees horizontally, the locking handle 1507 rotates 90 degrees horizontally to drive the locking plate 1506 to rotate 90 degrees horizontally, release the locking handle 1507, the reset spring 1503 releases the pressure to push the locking shaft 1502 to move downward, the locking shaft 1502 moves downward to drive the locking block 1501 to move downward, the locking block 1501 moves downward to engage with the pulling racks 1603 on both sides, and the locking mechanism 15 locks the pulling mechanism 16;

[0061] S6. At this time, the height lock of the gate plate by the anti-fall mechanism 14 is released, the protective door 2 is closed, the test parameters are set, and the hydraulic telescopic rod 8 is started to perform a tensile test on the steel bar 10 to be tested.

[0062] The above-mentioned embodiments only express the preferred implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person skilled in the art, several modifications, improvements and substitutions can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. A hydraulic testing device, characterized in that: The invention comprises a housing (1), wherein four guide columns (9) are fixedly connected to the inner side of the housing (1), an upper gate plate (5) is fixedly connected to the upper end of the guide column (9), a fixed platform (7) is fixedly connected to the outer side of the lower end of the guide column (9), a lower gate plate (6) is slidably connected to the outer side of the guide column (9) and located between the fixed platform (7) and the upper gate plate (5), a hydraulic telescopic rod (8) is arranged on the lower side of the lower gate plate (6), a pulling mechanism (16) is arranged inside the upper gate plate (5) and the lower gate plate (6), a locking mechanism (15) is arranged on the side of the pulling mechanism (16), and a follower block (12) is arranged inside the upper gate plate (5) and the lower gate plate (6), and the follower block The side of the upper gate plate (12) is provided with a quick-change mechanism (13), the side of the lower gate plate (6) is provided with an anti-fall mechanism (14), the pulling mechanism (16) includes a plurality of pulling sleeves (1605), the pulling sleeves (1605) are rotatably connected to the upper gate plate (5) and the lower gate plate (6), the interior of the pulling sleeves (1605) is connected to a pulling column (1601) via a thread, the internal threads of the pulling sleeves (1605) on both sides rotate in opposite directions, the outer side of the pulling sleeves (1605) is fixedly connected to a pulling gear (1602), the side of the upper gate plate (5) and the lower gate plate (6) are provided with two square through holes, the pulling gear (1602) is rotatably connected to the square through holes. The square through hole is provided with two pulling racks (1603) which are slidably connected therein, and the opposite sides of the two pulling racks (1603) are fixedly connected with a plurality of teeth, and the pulling racks (1603) are meshedly connected with the pulling gear (1602) through the teeth, and one end of the two pulling racks (1603) is fixedly connected with a pulling handle (1604); the locking mechanism (15) comprises a limiting sleeve (1505), and the limiting sleeve (1505) is fixedly connected with the side surfaces of the upper gate plate (5) and the lower gate plate (6), and the other end of the limiting sleeve (1505) is slidably connected with a locking shaft (1502), and one end of the locking shaft (1502) is fixedly connected with a circular block, and the locking mechanism (155) is provided with a locking member (1604) which is fixedly connected with the locking member (1604). A return spring (1503) is sleeved on the outside of the fixed shaft (1502) and between the circular block and the limiting sleeve (1505); the other end of the locking shaft (1502) is fixedly connected to a locking block (1501); a plurality of tooth grooves are provided at both ends of the locking block (1501); the locking block (1501) is meshed and connected with the pulling rack (1603) via the tooth grooves; the end of the locking shaft (1502) is rotatably connected to a locking plate (1506); one end of the upper surface of the locking plate (1506) is fixedly connected to a locking handle (1507); and locking grooves (1504) are provided on the inner side surfaces of the upper gate plate (5) and the lower gate plate (6) corresponding to the locking block (1501);The anti-fall mechanism (14) comprises an anti-fall tile (1402), a plurality of symmetrical anti-fall grooves (1401) are provided on the lower gate plate (6), the anti-fall tile (1402) is slidably connected in the anti-fall groove (1401), the anti-fall groove (1401) is fitted with the guide column (9), a plurality of annular grooves are provided on the outer side of the guide column (9), a semi-annular groove matching the annular groove of the guide column (9) is provided on the arc inner side of the anti-fall tile (1402), an anti-fall screw (1403) is rotatably connected to the other side of the anti-fall tile (1402), the anti-fall screw (1403) passes through the lower gate plate (6) and is threadedly connected to the lower gate plate (6). ; 2. A hydraulic testing device according to claim 1, characterized in that: The inner sides of the upper gate plate (5) and the lower gate plate (6) are provided with a trapezoidal slide groove, and the sides of the trapezoidal slide groove are provided with two inclined T-shaped slide grooves. An inclined T-shaped block is slidably connected in the inclined T-shaped slide groove, and the other side of the inclined T-shaped block is fixedly connected to the follower block (12), and the lower surface of the follower block (12) is fixedly connected to the upper surface of the pulling column (1601). The cross-section of the follower block (12) is a right-angled trapezoid, and T-shaped slide grooves are provided on the opposite sides of the two follower blocks (12).

3. A hydraulic testing device according to claim 2, characterized in that: T-shaped blocks are slidably connected in the T-shaped grooves of the two follower blocks (12), wherein a left clamping plate (1101) is fixedly connected to the side of one of the T-shaped blocks, and a right clamping plate (1102) is fixedly connected to the side of the other T-shaped block, and a triangular sliding groove is opened in the middle of the left clamping plate (1101) and the right clamping plate (1102), and the cross-sections of the left clamping plate (1101) and the right clamping plate (1102) are F-shaped, and the left clamping plate (1101) and the right clamping plate (1102) are symmetrically staggered.

4. A hydraulic testing device according to claim 3, characterized in that: The quick-change mechanism (13) comprises a rivet (1303), the rivet (1303) being threadedly connected to the follower block (12), the outer side of the rivet (1303) being rotatably connected to a clamping plate (1302), a clamping spring (1304) being sleeved on the outer side of the rivet (1303) and located between the rivet (1303) and the clamping plate (1302), the other end of the side surface of the clamping plate (1302) being fixedly connected to a quick-change handle (1301), the other side of the follower block (12) being threadedly connected to a clamping screw (1305), the outer side of the clamping screw (1305) being rotatably connected to another clamping plate (1302), the cross section of the clamping plate (1302) being elliptical, the follower block (12) and the T-shaped block being provided with elliptical slide grooves on both sides, the size of the elliptical slide grooves being consistent with the size of the clamping plate (1302).

5. A hydraulic testing device according to claim 4, characterized in that: The housing (1) is internally fixedly connected with two hydraulic telescopic rods (8), the output ends of the hydraulic telescopic rods (8) are slidably connected to the fixed platform (7), the output ends of the hydraulic telescopic rods (8) pass through the fixed platform (7) and are rotatably connected to a connecting seat (801) via a rotating shaft, and the connecting seat (801) is fixedly connected to the lower surface of the lower gate plate (6).

6. A hydraulic testing device according to claim 5, characterized in that: A protective door (2) is rotatably connected to one side of the housing (1) via a rotating shaft, the protective door (2) being made of a metal mesh, and a base (3) is fixedly connected to the lower end of the housing (1).

7. A hydraulic testing device according to claim 6, characterized in that: The upper end of the housing (1) is connected to two lifting rings (4) via threads.

8. A method for using the hydraulic testing device according to claim 7, characterized in that: The following steps are involved: S1. Use the lifting ring (4) to lift the device to a designated position, first open the protective door (2), adjust the position of the lower gate (6) according to the length of the steel bar (10) to be tested, start the hydraulic telescopic rod (8) to extend upward, the output end of the hydraulic telescopic rod (8) drives the connecting seat (801) to move upward, the connecting seat (801) moves upward to push the lower gate (6) to move upward, and when the lower gate (6) moves to a suitable height, close the hydraulic telescopic rod (8); S2. Use a wrench to rotate the anti-fall screw (1403) toward the guide column (9). The anti-fall screw (1403) moves toward the guide column (9) to push the anti-fall tile (1402) toward the guide column (9). The anti-fall tile (1402) engages with the annular groove on the outside of the guide column (9). At this time, the anti-fall mechanism (14) locks the height of the lower gate plate (6); S3, power off the device, and then place the steel bar (10) to be tested in the triangular chute of the middle fixture (11) of the upper gate plate (5) and the lower gate plate (6); S4. Stretch the pulling handle (1604) outward. The pulling handle (1604) moves outward, driving the pulling rack (1603) to move outward. The pulling rack (1603) is meshed with the pulling gear (1602) through teeth. The pulling rack (1603) moves outward, driving the pulling gears (1602) on both sides to rotate. The pulling gears (1602) on both sides rotate in opposite directions. ) rotates to drive the pulling sleeve (1605) to rotate. Under the action of the internal thread of the pulling sleeve (1605), the pulling sleeve (1605) rotates to push the pulling column (1601) to move upward. At this time, the upward movement of the pulling column (1601) pushes the follower block (12) to move upward. The upward movement of the follower block (12) drives the clamp (11) to move upward. The clamp (11) moves upward to clamp the steel bar (10); S5, pull the locking handle (1507) upwards, the locking handle (1507) moves upwards and drives the locking plate (1506) to disengage from the locking groove (1504), the locking handle (1507) is moved to rotate 90 degrees horizontally, the locking handle (1507) rotates 90 degrees horizontally and drives the locking plate (1506) to rotate 90 degrees horizontally, release the locking handle (1507), the return spring (1503) releases the pressure and drives the locking shaft (1502) to move downwards, the locking shaft (1502) moves downwards and drives the locking block (1501) to move downwards, the locking block (1501) moves downwards and engages with the pulling racks (1603) on both sides, and at this time, the locking mechanism (15) locks the pulling mechanism (16); S6. At this time, the height lock of the gate plate by the anti-fall mechanism (14) is released, the protection door (2) is closed, the test parameters are set, and the hydraulic telescopic rod (8) is started to perform a tensile test on the steel bar (10) to be tested.

Images