CN221124257U - Universal testing machine for 3D printing of bonding strength between concrete layers - Google Patents

Abstract

The utility model relates to a universal testing machine for 3D printing of bonding strength between concrete layers, which comprises an equipment box with an open top, a table top body covered on the open top of the equipment box and a universal testing machine body arranged on the table top body, wherein a partition plate which is horizontally arranged is fixedly arranged in the equipment box, and a jacking mechanism for driving the table top body to vertically lift is arranged above the partition plate; lifting movable wheels are arranged at the left end and the right end of the equipment box. The utility model has reasonable design, on one hand, the height of the test table top can be adjusted, the problem that the table top is not enough to be beneficial to a user to test is avoided, and the use effect is improved; on the other hand, the use position of the whole universal testing machine is convenient for a user to move and adjust, the use effect of the whole device is further improved, and the limitation is reduced.

Description

Universal testing machine for 3D printing of bonding strength between concrete layers

Technical field:

The utility model relates to a universal testing machine for 3D printing of the bonding strength between concrete layers.

The background technology is as follows:

The 3D printing building is built by stacking printing materials layer by layer, so whether the bonding performance between the printing layers directly influences the integrity of the materials and the safety of the printing building. The concrete is a material with higher elastic modulus and lower tensile strength, for example, the tensile strength of common concrete is only 1-4 MPa, and the tensile stress generated by the concrete is always larger than the tensile strength of the concrete in the age of the concrete under the constraint condition only by a little shrinkage, so that the concrete is cracked. In the test of the bonding strength between 3D printed concrete layers, a universal tester is required to be used for matching with an upper die so as to test the bonding strength between 3D printed concrete layers.

The patent with the Chinese patent application number of CN201921231145.7 discloses a universal testing machine, which comprises a base, a supporting rod, an upper beam, a lower beam, clamps arranged on opposite surfaces of the upper beam and the lower beam, two supporting plates arranged on the upper surface of the base, and a pressing block arranged at the bottom of the lower beam and used for bending a workpiece.

However, the above-mentioned universal testing machine has disadvantages in use: on one hand, the height of the test table of the universal testing machine is fixed, and the height of the test table cannot be adjusted according to the use requirement of an experimenter, so that the universal testing machine has certain limitation; on the other hand, the universal testing machine is inconvenient for a worker to move and adjust the using position of the universal testing machine, and has certain limitation. For this reason, improvements are needed to solve this technical problem.

The utility model comprises the following steps:

The utility model aims at improving the problems in the prior art, namely the technical problem to be solved by the utility model is to provide the universal testing machine for 3D printing of the bonding strength between concrete layers, which has reasonable design, is convenient for adjusting the use height of the table top body of the universal testing machine, and is convenient for adjusting the position of the whole universal testing machine.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the utility model provides a universal testing machine of bonding strength between 3D printing concrete layer, includes that the top is open equipment box, lid establish at the open mesa body in equipment box top, set up the universal testing machine body on the mesa body, the inside of equipment box is fixed to be equipped with the division board that the level set up, the top of division board is equipped with the climbing mechanism that is used for driving the mesa body along vertical lift; lifting movable wheels are arranged at the left end and the right end of the equipment box.

Further, the jacking mechanism comprises a pair of moving plates which are distributed left and right, the pair of moving plates are driven by a jacking driving assembly to move in opposite directions or back to back, a pair of jacking plates which are distributed in a splayed manner in the left-right direction are arranged above the pair of moving plates, the upper ends of the jacking plates are hinged with the bottom of the table top body, and the lower ends of the jacking plates are hinged with the tops of the moving plates which are positioned on the same side.

Further, a transverse sliding groove is formed in the middle of the top surface of the partition plate, a pair of moving sliding blocks which are distributed left and right are connected in a sliding manner in the transverse sliding groove, and a pair of moving plates are respectively fixed at the tops of the pair of moving sliding blocks; the jacking driving piece comprises a bidirectional screw rod and a jacking motor, the bidirectional screw rod is transversely arranged above the transverse sliding groove, two sections of threaded sections with opposite screwing directions of the bidirectional screw rod are respectively in threaded connection with the middle parts of the pair of movable plates, and the left end of the bidirectional screw rod is connected with an output shaft of the jacking motor.

Further, the equipment box left and right sides face lower extreme all is fixed with fixed frame, the inside of fixed frame vertically is equipped with the lifter plate, vertical sliding fit is followed to lifter plate and fixed frame, and the lifter plate is gone up and down by elevating system drive, and the front and back both ends of lifter plate are fixed with the post that stretches out of vertical setting respectively, the lower extreme that stretches out the post runs through the bottom of fixed frame, and the removal wheel is installed to the bottom that stretches out the post.

Further, the lifting mechanism comprises a transmission shaft transversely arranged below the partition plate, the transmission shaft is driven to rotate by the power assembly, and the left end and the right end of the transmission shaft respectively penetrate through the equipment box and extend into the fixed frame; the middle part of fixed frame is installed the lift screw of vertical setting, the middle part looks spiro union of lift screw and lifter plate, the lower extreme of lift screw is connected with the transmission shaft transmission through drive gear group.

Further, the power assembly comprises a driving motor arranged on the bottom surface of the partition plate, an output shaft of the driving motor is connected with a driving gear, a driven gear is arranged in the middle of the transmission shaft, and the driven gear is meshed with the driving gear.

Further, the transmission gear set is located inside the fixed frame, the transmission gear set comprises a driving bevel gear and a driven bevel gear, the driving bevel gear is arranged at one end of the transmission shaft extending into the fixed frame, the driven bevel gear is arranged at the lower end of the lifting screw, and the driven bevel gear is meshed with the driving bevel gear.

Further, the movable wheels are universal wheels.

Further, the left end and the right end of the bottom surface of the equipment box are respectively fixed with a supporting plate, and the bottom surface of the supporting plate is fixed with an anti-slip pad.

Furthermore, stable circular grooves are formed in the top corners of the periphery of the top surface of the equipment box; the table top body is characterized in that vertical stable sliding rods are fixed at the top corners of the periphery of the bottom surface of the table top body, and the stable sliding rods are in vertical sliding fit with corresponding stable round grooves in position.

Compared with the prior art, the utility model has the following effects: the utility model has reasonable design, on one hand, the height of the test table top can be adjusted, the problem that the table top is not enough to be beneficial to a user to test is avoided, and the use effect is improved; on the other hand, the use position of the whole universal testing machine is convenient for a user to move and adjust, the use effect of the whole device is further improved, and the limitation is reduced.

Description of the drawings:

FIG. 1 is a schematic diagram of a front view configuration of an embodiment of the present utility model;

FIG. 2 is a schematic diagram showing a schematic diagram of a main view cross-sectional structure of an embodiment of the present utility model;

FIG. 3 is a schematic view of a partial construction of a lifting mechanism according to an embodiment of the present utility model;

FIG. 4 is a schematic cross-sectional view of a fixing frame according to an embodiment of the present utility model;

FIG. 5 is a schematic view showing a three-dimensional structure of a table body according to an embodiment of the present utility model;

FIG. 6 is a schematic diagram showing the cooperation of the stabilizing slide bar and the stabilizing circular groove in the embodiment of the utility model.

In the figure:

1-a table top body; 2-equipment box; 3-a controller; 4-fixing the frame; 5-extending the column; 6-moving wheels; 7-supporting plates; 8-maintaining the door; 9-jacking a motor; 10-dividing plates; 11-a jacking plate; 12-a first hinge base; 13-a second hinge seat; 14-a bidirectional screw rod; 15-moving the slide; 16-a transverse chute; 17-a moving plate; 18-driving a motor; 19-a drive gear; 20-a driven gear ring; 21-a transmission shaft; 22-bearing seats and 23-lifting plates; 24-lifting screw rods; 25-driven bevel gears; 26-drive bevel gear; 27-a stabilizing slide bar; 28-a stable chute; 29-universal tester body.

The specific embodiment is as follows:

The utility model will be described in further detail with reference to the drawings and the detailed description.

In the description of the present utility model, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

As shown in fig. 1 to 6, the universal testing machine for 3D printing of the bonding strength between concrete layers of the utility model comprises an equipment box 2 with an open top, a table top body 1 covered on the top of the equipment box 2 and a universal testing machine body 29 arranged on the table top body 1, wherein a partition plate 10 which is horizontally arranged is fixedly arranged in the equipment box 2, a lifting mechanism for driving the table top body 1 to vertically lift is arranged above the partition plate 10, the table top body 1 can be lifted upwards by utilizing the lifting mechanism, the height of a test table top is adjusted, the disadvantage of the table top height of a user is avoided, and the use effect is improved; the lifting movable wheels 6 are arranged at the left end and the right end of the equipment box 2, when the whole universal testing machine needs to be moved, the movable wheels are lowered to the joint with the ground, the equipment box is jacked up, the universal testing machine can be conveniently pushed to move at the moment, position adjustment is achieved, the using effect is further improved, and the limitation is reduced.

In this embodiment, as shown in fig. 2, the jacking mechanism includes a pair of moving plates 17 distributed left and right, the pair of moving plates 17 are driven by a jacking driving assembly to move in opposite directions or opposite directions in a transverse direction, a pair of jacking plates 11 distributed in a splayed manner in the left-right direction are disposed above the pair of moving plates 17, the upper ends of the jacking plates 11 are hinged to a first hinge seat 12 at the bottom of the table body 1, and the lower ends of the jacking plates 11 are hinged to a second hinge seat 13 at the top of the moving plate 17 located on the same side. When the table top is in operation, the pair of moving plates move in opposite directions along the transverse direction, the moving plates drive the jacking plates to swing towards the middle, and the jacking plates jack the table top body upwards; when the pair of moving plates move back, the lifting plate swings downwards at the moment, so that the table top body descends.

It should be noted that, in order to lift up stably, two lifting plates are arranged on each moving plate, and the two lifting plates are distributed back and forth.

In this embodiment, a lateral chute 16 is disposed in the middle of the top surface of the partition plate 10, a pair of moving sliders 15 distributed left and right are slidably connected in the lateral chute 16, and a pair of moving plates 17 are respectively fixed on top of the pair of moving sliders 15; the jacking driving piece comprises a bidirectional screw rod 14 and a jacking motor 9, the bidirectional screw rod 14 is transversely arranged above the transverse sliding groove 16, two sections of threaded sections of the bidirectional screw rod 14 with opposite rotation directions are respectively in threaded connection with the middle parts of a pair of moving plates 17, and the left end of the bidirectional screw rod 14 is connected with an output shaft of the jacking motor 9. When the lifting motor 9 works, the bidirectional screw rod is driven to rotate 14, and the rotation motion of the bidirectional screw rod 14 is converted into a pair of moving plates 17 to move in the transverse direction in opposite directions; when the jacking motor is reversed, the rotary motion of the bidirectional screw rod is converted into a pair of moving plates which move back in the transverse direction.

In this embodiment, the left and right sides face lower extreme of equipment box 2 all is fixed with fixed frame 4, the inside of fixed frame 4 vertically is equipped with the lifter plate, vertical sliding fit is followed with fixed frame to the lifter plate, and the lifter plate is by elevating system drive lift 23, and the front and back both ends of lifter plate 23 are fixed with the post 5 that stretches out of vertical setting respectively, the bottom of fixed frame 4 is run through to the lower extreme of stretching out post 5, and the removal wheel 6 is installed to the bottom of stretching out post 5, namely: the number of the extending columns is 4 in total, and the bottom of each extending column is provided with a moving wheel; the left and right ends of the bottom surface of the equipment box 2 are respectively fixed with a supporting plate 7. When the position of the universal testing machine is to be adjusted, the lifting mechanism drives the lifting plate to move downwards, the lifting plate drives the extending column to move synchronously, the moving wheel is in contact with the ground and jack up the whole equipment box upwards, the supporting plate on the bottom surface of the equipment box is separated from the ground, then the position of the whole universal testing machine can be moved, after the position of the equipment box is moved to a required position, the lifting mechanism drives the lifting plate to move upwards, the lifting plate drives the moving wheel to lift through the extending column, the moving wheel is reset upwards, and the equipment box is supported through the supporting plate at the moment, so that the stability in use is improved.

In this embodiment, the lifting mechanism includes a transmission shaft 21 transversely disposed below the partition plate 10, the transmission shaft 21 is driven by a power assembly to rotate, and left and right ends of the transmission shaft 21 respectively penetrate through the equipment box 2 and extend into the fixing frame 4 located on the same side; the middle part of fixed frame 4 is installed the lift screw 24 of vertical setting, lift screw 24 and the middle part looks spiro union of lifter plate 23, the lower extreme of lift screw 24 is connected with the transmission shaft 21 transmission through drive gear group. When the lifting plate lifting mechanism works, the power assembly drives the transmission shaft to rotate, and the transmission shaft drives the lifting screw rods positioned on the same side to rotate through the transmission gear set at the end part, so that the rotation motion of the lifting screw rods is converted into vertical lifting of the lifting plate. The lifting plate can be lifted or lowered by controlling the forward and backward rotation of the transmission shaft.

In this embodiment, the power assembly includes a driving motor 18 mounted on the bottom surface of the partition plate 10, an output shaft of the driving motor 18 is connected with a driving gear 19, a driven gear 20 is mounted in the middle of the transmission shaft 21, and the driven gear 20 is meshed with the driving gear 19. When the driving device works, the driving motor drives the driving gear to rotate, the driving gear drives the driven gear to rotate, and the driven gear drives the transmission shaft to rotate.

In this embodiment, bearing seats 22 for supporting the transmission shaft 21 are respectively provided at the left and right ends of the inner bottom surface of the equipment box 2.

In this embodiment, the driving gear set is located inside the fixed frame 4, the driving gear set includes a driving bevel gear 26 and a driven bevel gear 25, the driving bevel gear 26 is installed at one end of the driving shaft 21 extending into the fixed frame 4, the driven bevel gear 25 is installed at the lower end of the lifting screw 24, and the driven bevel gear 25 is meshed with the driving bevel gear 26.

In this embodiment, for convenience of movement, the moving wheel 6 is a universal wheel.

In this embodiment, the bottom surface of the supporting plate 7 is fixed with an anti-slip pad, and the anti-slip pad can improve anti-slip performance.

In this embodiment, stable circular grooves 28 are formed at the top corners of the periphery of the top surface of the equipment box 2; the vertical stable slide bars 27 are fixed at the top corners of the periphery of the bottom surface of the table top body 20, and the stable slide bars 27 are in vertical sliding fit with the corresponding stable round grooves 28 in position, so that the table top body can be guided during lifting, and the stability of the table top body during lifting can be improved.

In this embodiment, a maintenance door 8 hinged to the equipment box is provided at the front end of the equipment box 2, and a handle is provided at the front end of the maintenance door 8. By providing the maintenance door 8, maintenance of the equipment components inside the equipment box 2 can be facilitated.

In this embodiment, a controller 3 is disposed on one side of the equipment box 2.

The specific working principle and the using method of the utility model are as follows:

(1) When the height of the table top body 1 of the universal testing machine is adjusted: the lifting motor 9 is controlled to drive the bidirectional screw rod 14 to rotate, so that the two movable plates 17 can move in opposite directions stably under the action of the movable sliding blocks 15 and the transverse sliding grooves 16, then the height of the table top body 1 of the universal testing machine can be adjusted under the action of the first hinging seat 12, the second hinging seat 13 and the lifting plate 11, and when the height of the table top body 1 of the universal testing machine is raised, the table top body 1 of the universal testing machine can be raised to have certain stability under the action of the stable sliding rods 27 and the stable sliding grooves 28, so that shaking is avoided;

(2) When the using position of the whole universal testing machine is adjusted: the driving motor 18 is controlled to drive the driving gear 19 to drive the driven gear 20 to rotate, so that the driving shaft 21 rotates to drive the driving bevel gears 26 at two ends to rotate, the corresponding driven bevel gears 25 can be respectively rotated through the rotation of the two driving bevel gears 26, so that the corresponding lifting screw 24 rotates, then the corresponding lifting plate 23 drives the extension column 5 to extend, so that the movable wheel 6 moves towards the ground, then the movable wheel 6 supports the whole universal testing machine, at the moment, the supporting plate 7 is separated from the ground, then the position of the whole universal testing machine can be moved, after the position is moved to a required position, the driving shaft 21 can be reversed through controlling the driving motor 18 to rotate reversely, so that the lifting plate 23 drives the extension column 5 to ascend, the movable wheel 6 is reset, at the moment, the whole universal testing machine is supported under the action of the supporting plate 7, and the stability in use is improved.

If the utility model discloses or relates to components or structures fixedly connected with each other, then unless otherwise stated, the fixed connection is understood as: detachably fixed connection (e.g. using bolts or screws) can also be understood as: the non-detachable fixed connection (e.g. riveting, welding), of course, the mutual fixed connection may also be replaced by an integral structure (e.g. integrally formed using a casting process) (except for obviously being unable to use an integral forming process).

In addition, terms used in any of the above-described aspects of the present disclosure to express positional relationship or shape have meanings including a state or shape similar to, similar to or approaching thereto unless otherwise stated.

Any part provided by the utility model can be assembled by a plurality of independent components, or can be manufactured by an integral forming process.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same; while the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that: modifications may be made to the specific embodiments of the present utility model or equivalents may be substituted for part of the technical features thereof; without departing from the spirit of the utility model, it is intended to cover the scope of the utility model as claimed.

Claims (10)

1. The utility model provides a universal testing machine of bonding strength between 3D printing concrete layer, includes that the top is open equipment box, lid establish at the open mesa body in equipment box top, set up the universal testing machine body on the mesa body, its characterized in that: the inside of the equipment box is fixedly provided with a horizontally arranged partition plate, and a jacking mechanism for driving the table top body to vertically lift is arranged above the partition plate; lifting movable wheels are arranged at the left end and the right end of the equipment box.

2. The universal testing machine for 3D printed inter-concrete layer bond strength of claim 1, wherein: the jacking mechanism comprises a pair of moving plates which are distributed left and right, the pair of moving plates are driven by a jacking driving assembly to move in opposite directions or back to back, a pair of jacking plates which are distributed in a splayed manner in the left-right direction are arranged above the pair of moving plates, the upper ends of the jacking plates are hinged with the bottom of the table top body, and the lower ends of the jacking plates are hinged with the tops of the moving plates which are positioned on the same side.

3. The universal testing machine for 3D printed inter-concrete layer bond strength of claim 2, wherein: a pair of moving sliding blocks which are distributed left and right are connected in a sliding manner in the transverse sliding groove, and a pair of moving plates are respectively fixed at the tops of the pair of moving sliding blocks; the jacking driving assembly comprises a bidirectional screw rod and a jacking motor, the bidirectional screw rod is transversely arranged above the transverse sliding groove, two sections of threaded sections with opposite screwing directions of the bidirectional screw rod are respectively in threaded connection with the middle parts of the pair of movable plates, and the left end of the bidirectional screw rod is connected with an output shaft of the jacking motor.

4. The universal testing machine for 3D printed inter-concrete layer bond strength of claim 1, wherein: the equipment box is characterized in that fixed frames are fixed at the lower ends of the left side surface and the right side surface of the equipment box, lifting plates are longitudinally arranged in the fixed frames and are in vertical sliding fit with the fixed frames, the lifting plates are driven to lift by lifting mechanisms, protruding columns which are vertically arranged are respectively fixed at the front end and the rear end of the lifting plates, the lower ends of the protruding columns penetrate through the bottoms of the fixed frames, and moving wheels are arranged at the bottoms of the protruding columns.

5. The universal testing machine for 3D printed inter-concrete layer bond strength of claim 4, wherein: the lifting mechanism comprises a transmission shaft transversely arranged below the partition plate, the transmission shaft is driven to rotate by the power assembly, and the left end and the right end of the transmission shaft respectively penetrate through the equipment box and extend into the fixed frame; the middle part of fixed frame is installed the lift screw of vertical setting, the middle part looks spiro union of lift screw and lifter plate, the lower extreme of lift screw is connected with the transmission shaft transmission through drive gear group.

6. The universal testing machine for 3D printed inter-concrete layer bond strength of claim 5, wherein: the power assembly comprises a driving motor arranged on the bottom surface of the partition plate, an output shaft of the driving motor is connected with a driving gear, a driven gear is arranged in the middle of the transmission shaft, and the driven gear is meshed with the driving gear.

7. The universal testing machine for 3D printed inter-concrete layer bond strength of claim 5, wherein: the transmission gear set is located inside the fixed frame and comprises a driving bevel gear and a driven bevel gear, the driving bevel gear is arranged at one end of the transmission shaft extending into the fixed frame, the driven bevel gear is arranged at the lower end of the lifting screw, and the driven bevel gear is meshed with the driving bevel gear.

8. A universal tester for 3D printed inter-concrete layer bond strength as recited in claim 1 or 4, wherein: the movable wheels are universal wheels.

9. The universal testing machine for 3D printed inter-concrete layer bond strength of claim 1, wherein: the left end and the right end of the bottom surface of the equipment box are respectively fixed with a supporting plate, and the bottom surface of the supporting plate is fixed with an anti-slip pad.

10. The universal testing machine for 3D printed inter-concrete layer bond strength of claim 1, wherein: the top corners of the periphery of the top surface of the equipment box are provided with stable circular grooves; the table top body is characterized in that vertical stable sliding rods are fixed at the top corners of the periphery of the bottom surface of the table top body, and the stable sliding rods are in vertical sliding fit with corresponding stable round grooves in position.