CN219475252U

CN219475252U - Vertical impact tester

Info

Publication number: CN219475252U
Application number: CN202320050150.8U
Authority: CN
Inventors: 邹君文; 裘吕超; 叶波; 章煜辉; 雷金香; 吴一峰; 李小英; 周桢; 徐胜; 陈涛
Original assignee: Zhejinag Electric Power Boiler Pressure Vessel Detection Co ltd
Current assignee: Zhejinag Electric Power Boiler Pressure Vessel Detection Co ltd
Priority date: 2023-01-09
Filing date: 2023-01-09
Publication date: 2023-08-04
Anticipated expiration: 2033-01-09

Abstract

The utility model belongs to the technical field of impact performance tests of building boards, in particular to a vertical impact tester, which aims at the defect that the existing drop hammer type impact tester is not well suitable for impact resistance tests of fiber cement product boards, and adopts the following technical scheme: a vertical impact tester for impact resistance testing of a plate-like fiber cement product, comprising: a body; the test sand box is arranged at the bottom of the machine body; the movable loading mechanism comprises a guide column arranged on the machine body, a lifting assembly which is lifted under the guide of the guide column and an electromagnetic seat fixed on the lifting assembly; the test hammer is fixed on the electromagnetic seat; the lifting mechanism is arranged on the machine body and used for driving the lifting assembly to lift and comprises a lifting motor and a transmission assembly; and the controller is used for controlling the lifting motor and the electromagnetic seat. The beneficial effects of the utility model are as follows: and the impact test is ensured to be carried out smoothly, and the hammer head is prevented from generating secondary impact.

Description

Vertical impact tester

Technical Field

The utility model belongs to the technical field of building board impact performance tests, and particularly relates to a vertical impact tester which is particularly suitable for impact resistance tests of fiber cement boards and fiber reinforced cement exterior wall decoration hanging boards.

Background

In the construction field, various properties of various boards need to be tested to determine whether the product meets the corresponding requirements. The national standard GBT7019-1997 fiber cement product test method provides for the relevant requirements of the fiber cement product on impact resistance test. However, the structure of the main equipment required for the test is not disclosed.

In the prior art, although some drop hammer impact testers are disclosed, the drop hammer impact testers have the following problems when applied to fiber cement products: 1. although the functions are more powerful, the corresponding structure is more complex, the processing and assembling difficulties are higher, but the functions are excessive when the fiber cement product plate is applied to fiber cement product plates, and the fiber cement product plates are large in size and small in material (see CN 110146393A-a drop hammer impact tester); 2. secondary impact can be generated after the hammer head falls to the ground, equipment is damaged or impact test accuracy is affected; 3. the height of the hammer head is not accurate enough, or the height adjustment of the hammer head is complicated.

Disclosure of Invention

Aiming at the defect that the existing drop hammer type impact tester is not well suitable for impact resistance tests of fiber cement product plates, the utility model provides a vertical impact tester, and the impact test is ensured to be carried out smoothly.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a vertical impact tester for impact resistance testing of a plate-like fiber cement product, the vertical impact tester comprising:

a body;

the test sand box is arranged at the bottom of the machine body and comprises a sand box and test sand arranged in the sand box;

the movable loading mechanism comprises a guide column arranged on the machine body, a lifting assembly which is lifted under the guide of the guide column and an electromagnetic seat fixed on the lifting assembly;

the test hammer is fixed on the electromagnetic seat;

the lifting mechanism is arranged on the machine body and used for driving the lifting assembly to lift and comprises a lifting motor and a transmission assembly;

and the controller is used for controlling the lifting motor and the electromagnetic seat.

According to the vertical impact tester, the test hammer head can be fixed on the electromagnetic seat by arranging the movable loading mechanism with the electromagnetic seat and the guide structure, the lifting assembly can be driven to lift by arranging the lifting mechanism, the movable loading mechanism is provided with the guide structure, the test hammer head can be ensured to rise to the required height, and the test sand box with the proper size can be arranged, so that the test hammer head is limited by the test sand or the sand box after impacting a sample, thereby avoiding the damage caused by secondary impact of the test hammer head.

As an improvement, the lifting assembly is provided with a laser ranging device electrically connected with the controller, the controller controls the lifting motor according to signals of the laser ranging device, and the lifting motor is a servo motor. Through setting up laser rangefinder and adopting servo motor as elevator motor, laser rangefinder detects the height of experimental tup distance platelike fiber cement goods, and the controller can control experimental tup accuracy to stay in required height.

As an improvement, the four guide posts are arranged, the lifting assembly comprises a lifting plate and a guide bearing, the inner ring of the guide bearing is matched with the guide posts, and the outer ring of the guide bearing is fixedly connected with the lifting plate. Through setting up four guide posts, guarantee that lifting assembly goes up and down reliably and be difficult for the skew. By providing guide bearings, friction during lifting is reduced while further preventing deflection of the lifting assembly.

As an improvement, the lifting assembly further comprises a T-shaped shaft sleeve, the outer ring of the guide bearing is in interference fit with the T-shaped shaft sleeve, the T-shaped shaft sleeve is fixed with the lifting plate through screws, and the large-diameter section of the T-shaped shaft sleeve is arranged on the upper side and the small-diameter section of the T-shaped shaft sleeve is inserted into the lifting plate.

As an improvement, the lifting plate is I-shaped; the middle part of the lifting plate is provided with a reinforcing strip. The lifter plate is rectangular shape, and the stiffener sets up along lifter plate length direction.

As an improvement, lifting boxes are arranged at two ends of the lifting plate, each lifting box comprises a box body and a box cover, an avoidance groove for avoiding the guide column is formed in the box cover, the lifting boxes are used for accommodating the two ends of the lifting plate, and accommodating spaces are formed in the areas, below the lifting plate, of the box body.

As an improvement, the transmission assembly comprises a screw rod driven by the lifting motor to rotate and a lifting nut matched with the screw rod, and the lifting nut is fixedly connected with the lifting assembly.

As an improvement, the two ends of the screw rod are provided with bearings with seats; the transmission assembly further comprises a synchronous pulley assembly connected with the motor and the screw rod.

As an improvement, the synchronous pulley assembly comprises a driving wheel fixedly connected with the lifting motor, a synchronous belt, a driven wheel connected with the driving wheel through the synchronous belt, and a tensioning wheel for tensioning the synchronous belt, wherein the driven wheel is fixedly connected with the screw rod; the number of the screw rods is two.

As an improvement, the machine body comprises a bottom plate, four vertical square pipes arranged above the bottom plate, a sealing plate arranged above the vertical square pipes, an enclosure arranged above the sealing plate, a horizontal square pipe connected with the vertical square pipes, and angle irons for reinforcing the horizontal square pipe and the vertical square pipes, and the lifting motor is arranged above the sealing plate and is accommodated in the enclosure; the fuselage also includes a plurality of side panels, with the fuselage being open on only one side.

As an improvement, the controller comprises a control box, a touch display screen arranged on the control box, an emergency stop switch and a start switch.

The vertical impact tester has the beneficial effects that: through setting up the removal loading mechanism that has electromagnetic seat and guide structure, can be fixed in on the electromagnetic seat with experimental tup, through setting up elevating system, can drive lifting unit and go up and down, remove loading mechanism and have guide structure, can guarantee that experimental hammer rises to required height, through setting up experimental sand box, can be through setting up the experimental sand box of suitable size for experimental tup is restricted by sand or sand box for the experiment after striking the sample, thereby avoids the harm that experimental tup secondary striking produced.

Drawings

Fig. 1 and 2 are schematic views of different angles of a vertical impact tester according to a first embodiment of the present utility model.

Fig. 3 is a schematic view showing the structure of the vertical impact tester according to the first embodiment of the present utility model after the part of the body is hidden.

Fig. 4 and 5 are schematic views of the vertical impact tester according to the first embodiment of the present utility model, illustrating different angles of the vertical impact tester after the part of the vertical impact tester is hidden by the moving loading mechanism.

Fig. 6 is a schematic view of a structure of a vertical impact tester according to the first embodiment of the present utility model after hiding part of the lifting mechanism.

Fig. 7 is a schematic structural diagram of a vertical impact tester according to a second embodiment of the present utility model.

In the figure, 1, a fuselage; 11. a bottom plate; 12. erecting a square tube; 13. a sealing plate; 14. an enclosure; 15. a horizontal square tube; 16. angle iron; 17. a side plate;

2. testing a sand box;

3. a moving loading mechanism; 31. a guide post; 32. a lifting plate; 33. an electromagnetic seat; 34. a T-shaped shaft sleeve; 35. a guide bearing; 36. a case; 37. a case cover; 38. reinforcing strips;

4. a lifting mechanism; 41. a lifting motor; 42. a screw rod; 43. a driving wheel; 44. a synchronous belt; 45. driven wheel; 46. a tensioning wheel;

5. a controller; 51. a control box; 52. touching the display screen; 53. an emergency stop switch; 54. starting a switch;

6. testing a hammer head;

7. a laser ranging device.

Detailed Description

The technical solutions of the inventive embodiments of the present utility model will be explained and illustrated below with reference to the drawings of the inventive embodiments of the present utility model, but the following embodiments are only preferred embodiments of the inventive embodiments of the present utility model, not all. Based on the examples in the implementation manner, other examples obtained by a person skilled in the art without making any inventive effort fall within the scope of protection created by the present utility model.

Referring to fig. 1 to 7, a vertical impact tester of the present utility model for impact resistance test of a plate-shaped fiber cement product, the vertical impact tester comprising:

a body;

the test hammer is fixed on the electromagnetic seat;

Example 1

Referring to fig. 1 to 6, a vertical impact tester of the present utility model for impact resistance test of a plate-shaped fiber cement product, the vertical impact tester comprising:

a body 1;

the test sand box 2 is arranged at the bottom of the machine body 1 and comprises a sand box and test sand arranged in the sand box;

the movable loading mechanism 3 comprises a guide column 31 arranged on the machine body 1, a lifting assembly which is lifted under the guide of the guide column 31 and an electromagnetic seat 33 fixed on the lifting assembly;

the test hammer 6 is fixed on the electromagnetic seat 33;

the lifting mechanism 4 is arranged on the machine body 1 and used for driving the lifting assembly to lift and comprises a lifting motor 41 and a transmission assembly;

the controller 5 controls the lifting motor 41 and the electromagnetic seat 33.

In this embodiment, the machine body 1 includes a bottom plate 11, four upright square tubes 12 disposed above the bottom plate 11, a sealing plate 13 disposed above the upright square tubes 12, an enclosure 14 disposed above the sealing plate 13, a horizontal square tube 15 connecting the upright square tubes 12, and angle irons 16 reinforcing the horizontal square tube 15 and the upright square tubes 12, and the lifting motor 41 is disposed above the sealing plate 13 and is accommodated in the enclosure 14.

In this embodiment, the sealing plate 13 is provided with a mounting angle 16, and the enclosure 14 is fixed to the mounting angle 16 by screws.

In this embodiment, the body 1 further includes a plurality of side plates 17, and the body 1 is opened only at one side of the controller 5.

In this embodiment, the base plate 11 is provided with mounting holes for fixing the tester to the ground by bolts.

In this embodiment, the guide posts 31 have four guide posts, and the lifting assembly includes a lifting plate 32 and a guide bearing 35, where an inner ring of the guide bearing 35 is matched with the guide posts 31, and an outer ring of the guide bearing is fixedly connected with the lifting plate 32. By providing four guide posts 31, the lifting assembly is ensured to be reliably lifted and not to be easily deflected. By providing the guide bearing 35, the frictional force at the time of lifting is reduced while the lifting assembly is further prevented from being deflected.

In this embodiment, the lifting assembly further includes a T-shaped shaft sleeve 34, the outer ring of the guide bearing 35 is in interference fit with the T-shaped shaft sleeve 34, the T-shaped shaft sleeve 34 is fixed with the lifting plate 32 by screws, and the large-diameter section of the T-shaped shaft sleeve 34 is arranged on the upper side and the small-diameter section is inserted into the lifting plate 32. The lifting plate 32 is provided with a shaft sleeve mounting hole which is in transition fit with the small-diameter section of the T-shaped shaft sleeve 34.

In this embodiment, the lifting plate 32 is i-shaped, and a nut mounting hole is formed between shaft sleeve mounting holes in the middle of two ends of the lifting plate 32 in the length direction.

In this embodiment, a reinforcing strip 38 is disposed in the middle of the lifting plate 32. The lifter plate 32 is elongated and the reinforcement bars 38 are disposed along the length of the lifter plate 32. The reinforcing strip 38 is located on the upper surface of the lifter plate 32.

In this embodiment, the lifter plate 32 both ends are equipped with the lifter box, the lifter box includes box 36 and case lid 37, offer on the case lid 37 and dodge the groove of dodging of guide post 31, the lifter box holds lifter plate 32 both ends in, the region that box 36 is located lifter plate 32 below forms accommodation space.

In this embodiment, the transmission assembly includes a screw rod 42 driven by the lifting motor 41 to rotate, and a lifting nut matched with the screw rod 42, where the lifting nut is fixedly connected with the lifting assembly. The lifting nut is fixed in the nut mounting hole of the lifting plate 32 by a screw. In the figures, the lifting nut is not shown.

In this embodiment, bearings with seats are disposed at two ends of the screw rod 42; the drive assembly also includes a timing belt 44 wheel assembly that connects the motor and the lead screw 42.

In this embodiment, the synchronous belt 44 wheel assembly includes a driving wheel 43 fixedly connected with the lifting motor 41, a synchronous belt 44, a driven wheel 45 connected with the driving wheel 43 through the synchronous belt 44, and a tensioning wheel 46 tensioning the synchronous belt 44, wherein the driven wheel 45 is fixedly connected with the screw rod 42; the number of the screw rods 42 is two.

In other embodiments, the transmission assembly may also employ a worm gear or gear assembly, or the like.

In this embodiment, the controller 5 includes a control box 51, a touch display screen 52 provided on the control box 51, a scram switch 53, and a start switch 54. In other embodiments, wireless control may also be employed.

In this embodiment, the control system may control the test height of the mobile loading mechanism 3 adjusted by the system through the touch display screen 52 according to different sizes and types of test samples.

In this embodiment, the inner side of the machine body 1 is further provided with a hammer head accommodating box for accommodating different hammer heads.

The working principle of the vertical impact tester of the embodiment is as follows: firstly, test sand is paved in a sand box according to requirements, then a test board is placed on the test sand according to requirements, then a proper test hammer 6 is selected and mounted on the electromagnetic seat 33 and fixed, after the test hammer 6 is mounted, the height of the test hammer 6 is set according to parameters of the test board, a lifting motor 41 of the lifting mechanism 4 is started, the lifting motor 41 lifts the lifting plate 32, the electromagnetic seat 33 and the test hammer 6 on the lifting plate to required heights under the guidance of the guide post 31 through a synchronous belt assembly, a screw rod 42 and a lifting nut, after the required heights are reached, the electromagnetic seat 33 is controlled to enable the test hammer 6 to loosen from the electromagnetic seat 33, the test hammer 6 freely falls down, the test board is impacted, and whether cracks exist on the front face and the back face of an impact point of the test board is visually detected.

The vertical impact tester of the first embodiment of the utility model has the beneficial effects that: the test hammer 6 can be fixed on the electromagnetic seat 33 by arranging the movable loading mechanism 3 with the electromagnetic seat 33 and the guide structure, the lifting assembly can be driven to lift by arranging the lifting mechanism 4, the movable loading mechanism 3 is provided with the guide structure, the test hammer 6 can be ensured to rise to a required height, and by arranging the test sand box 2, the test hammer 6 can be limited by test sand or a sand box after impacting a sample by arranging the test sand box 2 with a proper size, so that the damage caused by secondary impact of the test hammer 6 is avoided; by arranging four guide posts 31, a T-shaped shaft sleeve 34 and a lifting bearing, the lifting plate 32, an electromagnetic seat 33 on the lifting plate and the test hammer 6 are ensured to stably and accurately lift, and the test precision is ensured; the machine body 1 has better structural strength and less types of parts.

Example two

Referring to fig. 7, the lifting assembly is provided with a laser ranging device 7 electrically connected with the controller 5, the controller 5 controls the lifting motor 41 according to the signal of the laser ranging device 7, and the lifting motor 41 is a servo motor. By setting the laser ranging device 7 and adopting the servo motor as the lifting motor 41, the laser ranging device 7 detects the height of the test hammer 6 from the platy fiber cement product, and the controller 5 can control the test hammer 6 to accurately stay at the required height.

In this embodiment, the laser ranging device 7 is disposed below the lifting plate 32 of the lifting assembly through an L-shaped plate.

In this embodiment, when the size of the test hammer 6 is fixed, the difference between the data measured by the laser distance measuring device 7 and the actual height of the test hammer 6 is also determined. According to the height required by the test, the detection data of the laser ranging device 7 are obtained through conversion, and when the data detected by the laser ranging device 7 reach the preset height, the controller 5 controls the lifting motor 41 to stop. Specifically, if the height of the test hammer 6 is 100mm lower than the height detected by the laser distance measuring device 7, when the required height for the test is 1000mm, the controller 5 controls the lifting motor 41 to stop when the height detected by the laser distance measuring device 7 is 1100 mm.

When the laser distance measuring device 7 is not provided, if the thickness of the test sheet changes, manual adjustment is required. And when the thickness of the plate is in error, the falling height of the test hammer 6 is also in error, so that the test accuracy is affected. After the laser distance measuring device 7 is arranged, the height of the test hammer 6 from the test board can be ensured no matter what the thickness of the test board is. When the size of the test hammer 6 is changed, the correction is only required according to the size difference of different test hammers 6.

While the utility model has been described in terms of specific embodiments, it will be apparent to those skilled in the art that the utility model is not limited to the specific embodiments described. Any modifications which do not depart from the functional and structural principles of the present utility model are intended to be included within the scope of the appended claims.

Claims

1. A vertical impact tester for impact resistance test of plate-shaped fiber cement products, which is characterized in that: the vertical impact tester includes:

a body (1);

the test sand box (2) is arranged at the bottom of the machine body (1) and comprises a sand box and test sand arranged in the sand box;

the movable loading mechanism (3) comprises a guide column (31) arranged on the machine body (1), a lifting assembly which is lifted under the guide of the guide column (31) and an electromagnetic seat (33) fixed on the lifting assembly;

the test hammer head (6) is fixed on the electromagnetic seat (33);

the lifting mechanism (4) is arranged on the machine body (1) and used for driving the lifting assembly to lift and comprises a lifting motor (41) and a transmission assembly;

and a controller (5) for controlling the lifting motor (41) and the electromagnetic seat (33).

2. A vertical impact tester according to claim 1, wherein: the lifting assembly is provided with a laser ranging device (7) which is electrically connected with the controller (5), and the controller (5) controls the lifting motor (41) according to signals of the laser ranging device (7); the lifting motor (41) is a servo motor.

3. A vertical impact tester according to claim 1, wherein: the four guide posts (31) are arranged, the lifting assembly comprises a lifting plate (32) and guide bearings (35), the inner rings of the guide bearings (35) are matched with the guide posts (31), and the outer rings of the guide bearings are fixedly connected with the lifting plate (32).

4. A vertical impact tester according to claim 3, wherein: the lifting assembly further comprises a T-shaped shaft sleeve (34), the outer ring of the guide bearing (35) is in interference fit with the T-shaped shaft sleeve (34), the T-shaped shaft sleeve (34) is fixed with the lifting plate (32) through screws, and the large-diameter section of the T-shaped shaft sleeve (34) is arranged on the upper side and the small-diameter section of the T-shaped shaft sleeve is inserted into the lifting plate (32).

5. A vertical impact tester according to claim 3, wherein: the lifting plate (32) is I-shaped; a reinforcing strip (38) is arranged in the middle of the lifting plate (32); lifting boxes are arranged at two ends of the lifting plate (32), each lifting box comprises a box body (36) and a box cover (37), an avoidance groove for avoiding the guide column (31) is formed in the box cover (37), and the lifting boxes accommodate the two ends of the lifting plate (32).

6. A vertical impact tester according to claim 1, wherein: the transmission assembly comprises a screw rod (42) driven by the lifting motor (41) to rotate and a lifting nut matched with the screw rod (42), and the lifting nut is fixedly connected with the lifting assembly.

7. The vertical impact tester according to claim 6, wherein: two ends of the screw rod (42) are provided with bearings with seats; the transmission assembly further comprises a synchronous pulley assembly connected with the motor and the screw rod (42).

8. The vertical impact tester according to claim 7, wherein: the synchronous pulley assembly comprises a driving wheel (43) fixedly connected with the lifting motor (41), a synchronous belt (44), a driven wheel (45) connected with the driving wheel (43) through the synchronous belt (44), and a tensioning wheel (46) for tensioning the synchronous belt (44), wherein the driven wheel (45) is fixedly connected with the screw rod (42); the number of the screw rods (42) is two.

9. A vertical impact tester according to claim 1, wherein: the machine body (1) comprises a bottom plate (11), four vertical square pipes (12) arranged above the bottom plate (11), a sealing plate (13) arranged above the vertical square pipes (12), an enclosure (14) arranged above the sealing plate (13), a horizontal square pipe (15) connected with the vertical square pipes (12), and angle irons (16) for reinforcing the horizontal square pipe (15) and the vertical square pipes (12), wherein a lifting motor (41) is arranged above the sealing plate (13) and is accommodated in the enclosure (14); the body (1) further comprises a plurality of side plates (17), and the body (1) is only opened on one side.

10. A vertical impact tester according to claim 1, wherein: the controller (5) comprises a control box (51), a touch display screen (52) arranged on the control box (51), a scram switch (53) and a start switch (54).