Cantilever beam bending resistance testing device

Abstract

The invention relates to the technical field of bending resistance testing devices, in particular to a cantilever beam bending resistance testing device. According to the technical scheme, the device comprises a rack, a loading system and a fixing mechanism which are fixedly installed on the rack, a cantilever beam is detachably installed on the fixing mechanism, the device further comprises an installation auxiliary mechanism installed on the rack, and the installation auxiliary mechanism supports the cantilever beam and drives the cantilever beam to move in the transverse direction, the longitudinal direction and the vertical direction. When the position of the cantilever beam deviates, the cantilever beam can be driven to deviate, the cantilever beam can be conveniently adjusted to the position parallel to the connecting plate, the position of the cantilever beam can be effectively adjusted, manpower can be greatly reduced, the installation efficiency is improved, and the cantilever beam can be conveniently installed; the preformed hole in the cantilever beam is combined with the bolt through the first conveying belt, so that the cantilever beam can be conveniently installed, and the installation efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of anti-bending performance testing devices, in particular to a cantilever beam anti-bending performance testing device. Background Art

[0002] A cantilever beam is a common engineering structural element, one end of which is fixed while the other end is free and unsupported. A cantilever beam can bear loads perpendicular to its length and is widely used in many fields such as buildings, bridges, aircraft wings, ship structures, and robotic arms. Since only one end is fixed, a cantilever beam is mainly subjected to bending stress under load.

[0003] The cantilever beam bending resistance test device is a device used to test the bending resistance of materials or structures. The device consists of a test frame, a loading system, a force sensor, a servo motor or a hydraulic pump, a cantilever beam fixture and a displacement sensor. When the free end of the cantilever beam is vertically displaced, the cantilever beam will generally bend, and the connection between the bent cantilever beam and the displacement sensor will move left and right. The displacement sensor cannot move with the deformation of the cantilever beam, which will lead to inaccurate measurement results and damage to the displacement sensor. Summary of the invention

[0004] The purpose of the present invention is to provide a cantilever beam anti-bending performance test device in view of the problems existing in the background technology.

[0005] The technical solution of the present invention is a cantilever beam bending resistance test device, comprising a frame, a loading system and a fixing mechanism fixedly mounted on the frame, the cantilever beam being detachably mounted on the fixing mechanism, and further comprising:

[0006] An installation auxiliary mechanism installed on the frame, the installation auxiliary mechanism supports the cantilever beam and drives the cantilever beam to move in the horizontal, longitudinal and vertical directions;

[0007] An extension mechanism is fixedly mounted on the frame, a connecting mechanism is mounted on the extension mechanism, a displacement sensor is fixedly mounted on the connecting mechanism, the extension mechanism drives the displacement sensor to leave or enter the lower side of the cantilever beam, and the connecting mechanism enables the displacement sensor to move with the bending of the cantilever beam.

[0008] Optionally, the loading system includes a slider slidably mounted on the frame, a first hydraulic rod fixedly mounted on the slider, a pressure sensor fixedly mounted on the output shaft of the first hydraulic rod, and a loading head fixedly mounted on the pressure sensor.

[0009] Optionally, a motor is mounted at a height on the frame, a screw rod is rotatably mounted on the frame, and an output shaft of the motor is coaxially and fixedly connected to the screw rod.

[0010] Optionally, the fixing mechanism includes a connecting plate detachably mounted on the frame, a plurality of bolts are fixedly mounted on the connecting plate, nuts are threadedly connected to the bolts, and one end of the cantilever beam is fixedly mounted between the connecting plate and the nuts.

[0011] Optionally, the installation auxiliary mechanism includes a second hydraulic rod fixedly mounted on the frame, a lifting plate fixedly mounted on the output shaft of the second hydraulic rod, a synchronous plate slidably mounted on the lifting plate, a base plate slidably mounted on both sides of the synchronous plate, a guide rod fixedly mounted on the base plate, the guide rod is slidably connected to the frame, and a first adjustment mechanism and a second adjustment mechanism are mounted on the base plate.

[0012] Optionally, the first adjustment mechanism includes a plurality of first sliding bars slidably mounted on a base plate, a first guide seat being fixedly mounted on the plurality of first sliding bars, a first push rod motor being fixedly mounted on the base plate, an output shaft of the first push rod motor being fixedly connected to the first guide seat, a first conveying belt being rotatably mounted on the first guide seat, a first conveying motor being fixedly mounted on the first guide seat, a first transmission belt being fixedly mounted on two transmission shafts of the first conveying belt, and an output shaft of the first conveying motor being coaxially fixedly connected to one of the pulleys of the first transmission belt.

[0013] Optionally, the second adjustment mechanism includes a plurality of second sliding bars slidably mounted on the base plate, a second guide seat being fixedly mounted on the plurality of second sliding bars, a second push rod motor being fixedly mounted on the base plate, an output shaft of the second push rod motor being fixedly connected to the second guide seat, a second conveying belt being rotatably mounted on the second guide seat, a second conveying motor being fixedly mounted on the second guide seat, a second transmission belt being fixedly mounted on two transmission shafts of the second conveying belt, and an output shaft of the second conveying motor being coaxially fixedly connected to one of the pulleys of the second transmission belt.

[0014] Optionally, third hydraulic rods are slidably mounted on both sides of the frame, two third hydraulic rods correspond to two base plates one by one, and output shafts of the third hydraulic rods are fixedly connected to the base plates.

[0015] Optionally, the extension mechanism includes a crossbeam fixedly mounted on the frame, two support rods and a fourth hydraulic rod are slidably mounted on the crossbeam, a mounting plate is fixedly mounted on the two support rods, and the output shaft of the fourth hydraulic rod is fixedly connected to the mounting plate.

[0016] Optionally, the connecting mechanism includes a slideway provided on the mounting plate, a plurality of sliders are slidably mounted in the slideway, the displacement sensor is fixedly mounted on the slider, and an electromagnet is fixedly mounted on the displacement rod on the displacement sensor.

[0017] In summary, the present application includes at least one of the following beneficial technical effects:

[0018] When the position of the cantilever beam is offset, the present invention makes the rotation directions of the two second conveyor belts opposite, which can drive the cantilever beam to be offset, and facilitates the cantilever beam to be adjusted to a position parallel to the connecting plate, can effectively adjust the position of the cantilever beam, and can greatly reduce manpower, improve installation efficiency, and facilitate the installation of the cantilever beam. The reserved holes on the cantilever beam are combined with bolts through the first conveyor belt, so that the installation of the cantilever beam can be completed conveniently, greatly improving the installation efficiency.

[0019] The displacement sensor is further connected to the cantilever beam through an electromagnet. When the cantilever beam bends, the bent cantilever beam will exert lateral force on the displacement sensor, causing the displacement sensor to move along the slide, thereby preventing the displacement sensor from being subjected to lateral force and ensuring the accuracy of the displacement sensor's measurement data. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The structure diagram of the cantilever beam bending resistance test device of the present invention is given as follows: Figure 1 ;

[0021] Figure 2 The structure diagram of the cantilever beam bending resistance test device of the present invention is given as follows: Figure 2 ;

[0022] Figure 3 It is a structural schematic diagram of the installation auxiliary mechanism of the present invention;

[0023] Figure 4 It is a structural schematic diagram of the extension mechanism of the present invention;

[0024] Figure 5 It is a structural schematic diagram of the fixing mechanism of the present invention;

[0025] Figure 6 for Figure 1 A partial enlarged view of the middle A;

[0026] Figure 7 for Figure 3 A partial enlarged view of point B in the middle.

[0027] Figure numerals: 1, frame; 2, slider; 201, first hydraulic rod; 202, pressure sensor; 203, loading head; 3, motor; 301, screw rod; 4, connecting plate; 401, bolt; 402, nut; 5, cantilever beam; 6, second hydraulic rod; 601, lifting plate; 602, synchronous plate; 603, base plate; 604, guide rod; 605, first slide rod; 606, first guide seat; 607, second slide rod; 608, second guide Seat; 609, first push rod motor; 610, second push rod motor; 611, first conveyor belt; 612, first conveyor motor; 613, first transmission belt; 614, second conveyor belt; 615, second conveyor motor; 616, second transmission belt; 7, third hydraulic rod; 8, crossbeam; 801, support rod; 802, fourth hydraulic rod; 803, mounting plate; 804, slideway; 805, slider; 806, displacement sensor; 807, electromagnet. DETAILED DESCRIPTION

[0028] The technical solution of the present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0029] The components of the embodiments of the present application generally described and shown in the accompanying drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the application claimed, but merely represents the selected embodiments of the present application.

[0030] Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of this application.

[0031] Example

[0032] like Figure 1-2 and Figure 5 As shown, a cantilever beam bending resistance test device proposed by the present invention comprises a frame 1, a loading system and a fixing mechanism fixedly mounted on the frame 1, wherein the loading system comprises a slider 2 slidably mounted on the frame 1, a first hydraulic rod 201 fixedly mounted on the slider 2, a pressure sensor 202 fixedly mounted on the output shaft of the first hydraulic rod 201, and a loading head 203 fixedly mounted on the pressure sensor 202. The loading head 203 can be driven to move downward by the first hydraulic rod 201, and the loading head 203 is brought into contact with the cantilever beam 5, and pressure is applied to the cantilever beam 5, and the pressure applied by the loading head 203 to the cantilever beam 5 can be detected by the pressure sensor 202.

[0033] Further, the fixing mechanism is detachably mounted with a cantilever beam 5, and the fixing mechanism includes a connecting plate 4 detachably mounted on the frame 1, a plurality of bolts 401 are fixedly mounted on the connecting plate 4, nuts 402 are threadedly connected to the bolts 401, and one end of the cantilever beam 5 is fixedly mounted between the connecting plate 4 and the nuts 402. By aligning the connection holes reserved on the cantilever beam 5 with the bolts 401, and then tightening the cantilever beam 5 with the bolts 401, the cantilever beam 5 can be fixed on the frame 1.

[0034] Among them, a motor 3 is installed at a height on the frame 1, a screw rod 301 is rotatably installed on the frame 1, and the output shaft of the motor 3 is coaxially fixedly connected with the screw rod 301. The motor 3 drives the screw rod 301 to rotate, and the slider 2 can be driven to move along the frame 1, thereby driving the loading head 203 to move to different positions of the cantilever beam 5, and then different positions of the cantilever beam 5 can be pressed, and can adapt to cantilever beams 5 of different lengths.

[0035] like Figure 1-3 and Figure 6-7 As shown, this embodiment also includes an installation auxiliary mechanism installed on the frame 1, which supports the cantilever beam 5 and drives the cantilever beam 5 to move in the horizontal, longitudinal and vertical directions. Due to the large gravity of the cantilever beam, it is not conducive to fine adjustment, resulting in installation difficulties. Among them, the installation auxiliary mechanism includes a second hydraulic rod 6 fixedly installed on the frame 1, a lifting plate 601 is fixedly installed on the output shaft of the second hydraulic rod 6, a synchronous plate 602 is slidably installed on the lifting plate 601, and a base plate 603 is slidably installed on both sides of the synchronous plate 602. A guide rod 604 is fixedly installed on the base plate 603, and the guide rod 604 is slidably connected to the frame 1. The lifting plate 601 is driven by the second hydraulic rod 6 to perform lifting and lowering movements, which can drive the synchronous plate 602 to perform lifting and lowering movements, and the synchronous plate 602 can drive the base plates 603 on both sides to perform lifting and lowering movements synchronously. The first adjustment mechanism and the second adjustment mechanism are installed on the base plate 603. The position of the cantilever beam can be adjusted in two directions by the first adjustment mechanism and the second adjustment mechanism.

[0036] Furthermore, the first adjustment mechanism includes a plurality of first slide bars 605 slidably mounted on the base plate 603, a first guide seat 606 is fixedly mounted on the plurality of first slide bars 605, a first push rod motor 609 is fixedly mounted on the base plate 603, an output shaft of the first push rod motor 609 is fixedly connected to the first guide seat 606, a first conveying belt 611 is rotatably mounted on the first guide seat 606, a first conveying motor 612 is fixedly mounted on the first guide seat 606, a first transmission belt 613 is fixedly mounted on two transmission shafts of the first conveying belt 611, and the output shaft of the first conveying motor 612 is coaxially fixedly connected to one of the pulleys of the first transmission belt 613. When installing the cantilever beam 5, first place the cantilever beam 5 on the first conveyor belt 611. By synchronously starting the first push rod motors 609 on both sides, the first conveyor belt 611 can be driven to rise. At this time, the cantilever beam 5 displaced on the first conveyor belt 611 only contacts the first conveyor belt, and the first conveyor motor 612 can drive the first conveyor belt 611 to rotate. The rotation of the first conveyor belt 611 can drive the cantilever beam 5 to move in the left and right directions, thereby facilitating the combination of the reserved holes on the cantilever beam 5 and the bolts 401.

[0037] Furthermore, the second adjustment mechanism includes a plurality of second slide bars 607 slidably mounted on the base plate 603, a second guide seat 608 is fixedly mounted on the plurality of second slide bars 607, a second push rod motor 610 is fixedly mounted on the base plate 603, an output shaft of the second push rod motor 610 is fixedly connected to the second guide seat 608, a second conveying belt 614 is rotatably mounted on the second guide seat 608, a second conveying motor 615 is fixedly mounted on the second guide seat 608, a second transmission belt 616 is fixedly mounted on two transmission shafts of the second conveying belt 614, and the output shaft of the second conveying motor 615 is coaxially fixedly connected to one of the pulleys in the second transmission belt 616. When the front-to-back direction of the cantilever beam 5 needs to be adjusted, the first push rod motor 609 drives the first conveyor belt 611 to descend, and the second push rod motor 610 drives the second conveyor belt 614 to rise. At this time, the cantilever beam 5 will be supported by the second conveyor belt 614. At this time, starting the second conveying motor 615 can drive the cantilever beam 5 to move in the front-to-back direction, so as to align the reserved hole on the cantilever beam 5 with the bolt 401.

[0038] Furthermore, the position of the cantilever beam 5 may be offset, that is, the end face of the cantilever beam 5 is not in a parallel position with the connecting plate 4. At this time, it is necessary to start the second conveying motors 615 on both sides at the same time and make the two second conveying motors 615 rotate in opposite directions, so that the two second conveying belts 614 can rotate in opposite directions, which can drive the cantilever beam 5 to deviate, so as to facilitate the adjustment of the cantilever beam 5 to a position parallel to the connecting plate 4 and facilitate the installation of the cantilever beam 5. The cantilever beam 5 can be driven to deviate by only starting one of the second conveying motors 615 to rotate one of the second conveying belts 614. When the end face of the cantilever beam 5 is adjusted to a parallel position with the connecting plate 4, the two second conveying belts 614 can be started synchronously to align the connecting holes on the cantilever beam 5 with the bolts 401.

[0039] Among them, third hydraulic rods 7 are slidably installed on both sides of the frame 1, and the two third hydraulic rods 7 correspond to the two base plates 603 one by one, and the output shaft of the third hydraulic rod 7 is fixedly connected to the base plate 603. The base plate 603 can be driven to slide on the synchronization plate 602 by the third hydraulic rods 7 on both sides, and then the first conveyor belt 611 and the second conveyor belt 614 on both sides can be driven to move, and the positions of the first conveyor belt 611 and the second conveyor belt 614 can be adjusted to adapt to cantilever beams 5 of different specifications.

[0040] like Figure 4 As shown, this embodiment also includes an extension mechanism fixedly mounted on the frame 1, a connecting mechanism is mounted on the extension mechanism, a displacement sensor 806 is fixedly mounted on the connecting mechanism, the extension mechanism drives the displacement sensor 806 to leave or enter the lower side of the cantilever beam 5, and the connecting mechanism enables the displacement sensor 806 to move with the bending of the cantilever beam 5. The extension mechanism includes a crossbeam 8 fixedly mounted on the frame 1, two support rods 801 and a fourth hydraulic rod 802 are slidably mounted on the crossbeam 8, a mounting plate 803 is fixedly mounted on the two support rods 801, and the output shaft of the fourth hydraulic rod 802 is fixedly connected to the mounting plate 803. When the cantilever beam 5 is installed, the fourth hydraulic rod 802 drives the mounting plate 803 to move away from the frame 1, thereby driving multiple displacement sensors 806 to separate from the bottom of the cantilever beam 5, preventing the displacement sensor 806 from interfering with the first conveyor belt 611 and the second conveyor belt 614. After the cantilever beam is installed, the fourth hydraulic rod 802 can move the displacement sensor 806 to the bottom of the cantilever beam 5, and the vertical displacement of the free end of the cantilever beam 5 can be measured by the displacement sensor 806.

[0041] Further, the connection mechanism includes a slideway 804 provided on the mounting plate 803, a plurality of sliders 805 are slidably installed in the slideway 804, a displacement sensor 806 is fixedly installed on the slider 805, and an electromagnet 807 is fixedly installed on the displacement rod on the displacement sensor 806. When the free end of the cantilever beam 5 is vertically displaced, the cantilever beam 5 generally bends, and the connection between the bent cantilever beam 5 and the displacement sensor 806 moves in the left and right directions, and the displacement sensor 806 cannot be displaced with the deformation of the cantilever beam 5, which will lead to inaccurate measurement results and damage to the displacement sensor 806. The displacement sensor 806 is connected to the cantilever beam 5 through the electromagnet 807. When the cantilever beam 5 is bent, the bent cantilever beam 5 will apply a lateral force to the displacement sensor 806, causing the displacement sensor 806 to move along the slideway 804, thereby preventing the displacement sensor 806 from being subjected to a lateral force and ensuring the accuracy of the measurement data of the displacement sensor 806.

[0042] The working principle of this embodiment is as follows: when installing the cantilever beam 5, first place the cantilever beam 5 on the first conveyor belt 611 and the second conveyor belt 614. When the front-to-back direction of the cantilever beam 5 needs to be adjusted, the first conveyor belt 611 is driven down by the first push rod motor 609, and the second conveyor belt 614 is driven up by the second push rod motor 610. At this time, the cantilever beam 5 will be supported by the second conveyor belt 614. At this time, the second conveyor motor 615 can be started to drive the cantilever beam 5 to move in the front-to-back direction, so as to facilitate the alignment of the reserved hole on the cantilever beam 5 with the bolt 401. When the position of the cantilever beam 5 is offset, the rotation directions of the two second conveyor belts 614 are opposite, so as to drive the cantilever beam 5 to offset, so as to facilitate the adjustment of the cantilever beam 5 to a position parallel to the connecting plate 4, so as to facilitate the installation of the cantilever beam 5. When the end face of the cantilever beam 5 is adjusted to a position parallel to the connecting plate 4, the two second conveyor belts 614 can be started synchronously to align the connection hole on the cantilever beam 5 with the bolt 401. The rotation of the first conveyor belt 611 can drive the cantilever beam 5 to move in the left and right directions, thereby facilitating the combination of the reserved holes on the cantilever beam 5 and the bolts 401 .

[0043] The displacement sensor 806 is connected to the cantilever beam 5 through the electromagnet 807. When the cantilever beam 5 bends, the bent cantilever beam 5 will apply lateral force to the displacement sensor 806, causing the displacement sensor 806 to move along the slide 804, thereby preventing the displacement sensor 806 from being subjected to lateral force and ensuring the accuracy of the measurement data of the displacement sensor 806.

[0044] The above specific embodiments are only several optional embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A cantilever beam bending resistance test device, comprising a frame (1), a loading system and a fixing mechanism fixedly mounted on the frame (1), wherein a cantilever beam (5) is detachably mounted on the fixing mechanism, It is characterized in that Also includes: An auxiliary installation mechanism installed on the frame (1), the auxiliary installation mechanism supports the cantilever beam (5) and drives the cantilever beam (5) to move in the horizontal, longitudinal and vertical directions; An extension mechanism is fixedly mounted on the frame (1), a connection mechanism is mounted on the extension mechanism, a displacement sensor (806) is fixedly mounted on the connection mechanism, the extension mechanism drives the displacement sensor (806) to leave or enter the lower side of the cantilever beam (5), and the connection mechanism enables the displacement sensor (806) to move along with the bending of the cantilever beam (5).

2. A cantilever beam bending resistance test device according to claim 1, It is characterized in that The loading system comprises a slider (2) slidably mounted on a frame (1), a first hydraulic rod (201) fixedly mounted on the slider (2), a pressure sensor (202) fixedly mounted on an output shaft of the first hydraulic rod (201), and a loading head (203) fixedly mounted on the pressure sensor (202).

3. A cantilever beam bending resistance test device according to claim 2, It is characterized in that A motor (3) is mounted at a height on the frame (1), a screw rod (301) is rotatably mounted on the frame (1), and an output shaft of the motor (3) is coaxially fixedly connected to the screw rod (301).

4. A cantilever beam bending resistance test device according to claim 3, It is characterized in that The fixing mechanism comprises a connecting plate (4) detachably mounted on the frame (1), a plurality of bolts (401) being fixedly mounted on the connecting plate (4), nuts (402) being threadedly connected to the bolts (401), and one end of the cantilever beam (5) being fixedly mounted between the connecting plate (4) and the nuts (402).

5. A cantilever beam bending resistance test device according to claim 4, It is characterized in that The mounting auxiliary mechanism comprises a second hydraulic rod (6) fixedly mounted on the frame (1); a lifting plate (601) is fixedly mounted on the output shaft of the second hydraulic rod (6); a synchronous plate (602) is slidably mounted on the lifting plate (601); base plates (603) are slidably mounted on both sides of the synchronous plate (602); a guide rod (604) is fixedly mounted on the base plate (603); the guide rod (604) is slidably connected to the frame (1); and a first adjustment mechanism and a second adjustment mechanism are mounted on the base plate (603).

6. A cantilever beam bending resistance test device according to claim 5, It is characterized in that The first adjustment mechanism includes a plurality of first sliding bars (605) slidably mounted on a base plate (603), a first guide seat (606) being fixedly mounted on the plurality of first sliding bars (605), a first push rod motor (609) being fixedly mounted on the base plate (603), an output shaft of the first push rod motor (609) being fixedly connected to the first guide seat (606), a first conveying belt (611) being rotatably mounted on the first guide seat (606), a first conveying motor (612) being fixedly mounted on the first guide seat (606), a first transmission belt (613) being fixedly mounted on two transmission shafts of the first conveying belt (611), and an output shaft of the first conveying motor (612) being coaxially fixedly connected to one of the pulleys in the first transmission belt (613).

7. A cantilever beam bending resistance test device according to claim 6, It is characterized in that The second adjustment mechanism comprises a plurality of second slide bars (607) slidably mounted on a base plate (603), a second guide seat (608) being fixedly mounted on the plurality of second slide bars (607), a second push rod motor (610) being fixedly mounted on the base plate (603), an output shaft of the second push rod motor (610) being fixedly connected to the second guide seat (608), a second conveying belt (614) being rotatably mounted on the second guide seat (608), a second conveying motor (615) being fixedly mounted on the second guide seat (608), a second transmission belt (616) being fixedly mounted on two transmission shafts of the second conveying belt (614), and an output shaft of the second conveying motor (615) being coaxially fixedly connected to one of the pulleys of the second transmission belt (616).

8. A cantilever beam bending resistance test device according to claim 7, It is characterized in that Third hydraulic rods (7) are slidably mounted on both sides of the frame (1), the two third hydraulic rods (7) correspond one to one with the two base plates (603), and the output shafts of the third hydraulic rods (7) are fixedly connected to the base plates (603).

9. A cantilever beam bending resistance test device according to claim 8, It is characterized in that The extension mechanism comprises a crossbeam (8) fixedly mounted on the frame (1), two support rods (801) and a fourth hydraulic rod (802) being slidably mounted on the crossbeam (8), a mounting plate (803) being fixedly mounted on the two support rods (801), and an output shaft of the fourth hydraulic rod (802) being fixedly connected to the mounting plate (803).

10. A cantilever beam bending resistance test device according to claim 9, It is characterized in that The connection mechanism comprises a slideway (804) arranged on a mounting plate (803), a plurality of sliders (805) are slidably mounted in the slideway (804), the displacement sensor (806) is fixedly mounted on the slider (805), and an electromagnet (807) is fixedly mounted on a displacement rod on the displacement sensor (806).

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