CN217638401U

CN217638401U - Anti compression testing machine that rolls over of cement

Info

Publication number: CN217638401U
Application number: CN202221538415.0U
Authority: CN
Inventors: 金珍珍; 张然; 岑佩
Original assignee: Zheshang Testing Group Co ltd
Current assignee: Zheshang Testing Group Co ltd
Priority date: 2022-06-20
Filing date: 2022-06-20
Publication date: 2022-10-21
Anticipated expiration: 2032-06-20

Abstract

A cement bending and compression resistance testing machine comprises a testing base, an electric control device, two vertical supporting frames arranged at the upper end of the testing base, a first nut screw rod mechanism and a second nut screw rod mechanism which are arranged along the vertical supporting frames, a first clamping detection assembly and a second clamping detection assembly, wherein a workpiece clamping space is formed between the first clamping detection assembly and the second clamping detection assembly; a first mounting plate is connected between the top ends of the two vertical supporting frames in a spanning mode, a first rotating motor is arranged on the first mounting plate, and the first clamping detection assembly is driven by the first rotating motor; and a second mounting plate is connected between the first nut screw mechanism and the second nut screw mechanism in a spanning manner, a second rotating motor is arranged on the first mounting plate, and the second clamping detection assembly is upwards arranged on the second mounting plate and driven by the second rotating motor. The utility model discloses can satisfy the detection demand of drawing pressure and bending force simultaneously, the function is more diversified.

Description

Anti compression testing machine that rolls over of cement

Technical Field

The utility model belongs to the technical field of building material's detection and specifically relates to an anti compression testing machine that rolls over of cement.

Background

The concrete is artificial stone which is prepared by taking cement as a main cementing material, mixing water, sand, stones, chemical additives and mineral admixtures as necessary, mixing the materials according to a proper proportion, uniformly stirring, compacting, forming, curing and hardening. Concrete is mainly divided into two stages and states: plastic state before setting and hardening, namely fresh concrete or concrete mixture; hardened, i.e. hardened concrete or concrete.

Cement is a powdered hydraulic inorganic cementing material. The water is added and stirred to form slurry which can be hardened in the air or better hardened in water, and sand, stone and other materials can be firmly cemented together, which is the meaning of broken stone and flaky stone. The mixture of early lime and pozzolan is very similar to modern lime-pozzolan cement, and concrete made by cementing broken stones with it not only has higher strength after hardening, but also can resist erosion of fresh water or salt-containing water. As an important cementing material, the high-performance cement is widely applied to engineering such as civil construction, water conservancy, national defense and the like for a long time.

The cement mortar strength is one of the most important quality indexes of general portland cement, is the basis for determining the cement strength grade and the concrete strength grade, and refers to the latest national standard GB/T17671-2021 cement mortar strength test method (ISO method).

The existing mortar compression testing machine directly places a cement test piece on the mortar compression testing machine when in use, and then the maximum compression strength can be checked out on a computer through a pressure sensor arranged on the testing machine by crushing the cement test piece through a hydraulic cylinder. For example, patent document CN214472384U discloses a cement mortar strength testing device, and relates to the technical field of cement mortar strength testing equipment. The utility model discloses a bear the seat and install bear the mounting bracket at seat top, the pneumatic cylinder of installing on the mounting bracket, the clamp plate that is used for extrudeing the cement test piece is installed to the pneumatic cylinder expansion end, install pressure sensor on the clamp plate, bear the seat top and install the swash plate, bear the seat and install the box of placing that is used for depositing the cement disintegrating slag, the vertical installation piece in swash plate top, installation piece top symmetrical structure has the guide block. The utility model discloses two depression bars and can drive the adjustment mechanism that two depression bars are close to each other on the installation piece.

However, the existing detection devices like those in the above patents have certain pain points when in use, such as: 1. the detection function is single, only the tension and pressure can be detected, and the bending force cannot be detected; 2. the fixture for fixing the cement test piece is not arranged, so that the phenomena of hydraulic cylinder pressure deviation, cement test piece tilting and the like are easily caused, and the inspection failure is caused.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model provides a compression testing machine is rolled over in cement bending resistance

The utility model provides a technical scheme of its technical problem is: a cement bending and compression resistance testing machine comprises a testing base, an electric control device, two vertical supporting frames symmetrically arranged at the upper end of the testing base, a first nut screw rod mechanism and a second nut screw rod mechanism which are arranged along the vertical supporting frames, a first clamping detection assembly and a second clamping detection assembly, wherein a workpiece clamping space is formed between the first clamping detection assembly and the second clamping detection assembly;

a first mounting plate is spanned between the top ends of the two vertical supporting frames, a first rotating motor is arranged on the first mounting plate, and the first clamping detection assembly is downwards arranged on the first mounting plate and driven by the first rotating motor;

the first nut screw rod mechanism and the second nut screw rod mechanism are connected in a crossing mode through a second mounting plate, a second rotating motor is arranged on the first mounting plate, and the second clamping detection assembly is upwards arranged on the second mounting plate and driven by the second rotating motor.

The technical scheme is further provided with a servo power mechanism for synchronously driving the first nut screw mechanism and the second nut screw mechanism.

The technical scheme is further provided that the servo power mechanism comprises a servo motor, an output belt pulley set, a first input belt pulley acting on the first nut screw mechanism, a second input belt pulley acting on the second nut screw mechanism, and a transmission belt wound among the output belt pulley set, the first input belt pulley and the second input belt pulley.

The technical scheme is further that the servo power mechanism further comprises a plurality of tension pulleys, and the transmission belt is wound among the tension pulleys.

The first clamping detection assembly comprises a first rotating shaft vertically penetrating through the first mounting plate, a first clamping mechanism assembled at the other end of the first rotating shaft, and a first bending force sensor vertically sleeved on the first clamping mechanism.

The second clamping detection assembly comprises a second rotating shaft vertically penetrating through the second mounting plate, a pulling pressure sensor horizontally sleeved at one end of the second rotating shaft, a second clamping mechanism assembled at the other end of the second rotating shaft, and a second bending force sensor vertically sleeved on the second clamping mechanism.

According to the technical scheme, the first clamping mechanism and the second clamping mechanism respectively comprise a switching block fixedly connected with the first rotating shaft/the second rotating shaft, a straight cylindrical lifting rack inserted in the switching block, a sector adjusting gear rotatably arranged on the switching block and meshed with the straight cylindrical lifting rack, an adjusting handle acting on the sector adjusting gear, and a clamp body arranged at the upper end of the straight cylindrical lifting rack, and the clamp body is abutted against the first bending force sensor/the second bending force sensor.

Further setting for about above-mentioned technical scheme has seted up the holding chamber in the first power sensor of bending/the second power sensor of bending, the anchor clamps main part be located the holding chamber in, the first power sensor of bending/the second power sensor of bending still towards holding chamber one side protruding dog that is equipped with, the dog with anchor clamps main part butt and form spacing anticreep cooperation.

The technical scheme is further provided that the clamp main body comprises a left clamping block and a right clamping block, and a clamping gap is formed between the left clamping block and the right clamping block;

the holding chamber be big end down's triangle-shaped, left clamp splice and right clamp splice have the lateral wall that leans out gradually from top to bottom, the lateral wall can with the inside wall butt in holding chamber forms spacing cooperation.

According to the technical scheme, the lower ends of the left clamping block and the right clamping block are respectively provided with a driving groove, and the upper end of the straight cylindrical lifting rack is inserted into the driving grooves so as to drive the left clamping block and the right clamping block to move up and down through the straight cylindrical lifting rack.

The utility model discloses a theory of operation does: placing the cement test piece into a workpiece clamping space, and clamping two ends of the cement test piece by a first clamping detection assembly and a second clamping detection assembly respectively; when tension and pressure are required to be detected, the first nut screw rod mechanism and the second nut screw rod mechanism are started to realize the lifting action of the second mounting plate, so that the second clamping detection assembly is far away from or close to the first clamping detection assembly, the tension and pressure action of the cement test piece is realized, and the tension and pressure detection function is realized; when the bending force needs to be detected, the first rotating motor and the second rotating motor are respectively started according to requirements, so that the first clamping detection assembly and the second clamping detection assembly perform reverse rotation action, the bending and torsion action of the cement test piece is realized, and the detection function of the bending force is realized.

The beneficial effects of the utility model reside in that: 1. the cement bending and compression resistance testing machine can meet the detection requirements of tensile force and bending force at the same time, and has more diversified functions; 2. by adopting the structure of the double-clamping detection assembly and the double-nut screw mechanism, a better clamping effect is realized on the cement test piece, so that the test detection is more stable, and the data is more real and accurate; the effect of tee bend straight cylindricality lifting rack to the anchor clamps main part can make the relative holding chamber's of anchor clamps main part position change, and then makes the size in centre gripping clearance change to press from both sides the cement test piece of tight different thickness sizes.

Drawings

Fig. 1 is a schematic view of the overall appearance structure of the present invention.

Fig. 2 is an exploded view of the second clamp detection assembly.

FIG. 3 is a schematic view of the internal structure of the test base.

Fig. 4 is a schematic diagram of the present invention at the time of detection.

Fig. 5 is an enlarged schematic view of a portion a in fig. 4.

FIG. 6 is a comparison diagram of local structures of cement test pieces with different thicknesses during detection.

In the figure: 1. a test base; 2. an electric control device; 3. a vertical support frame; 4. a first nut-screw mechanism; 5. a second nut-screw mechanism; 6. a first clamping detection assembly; 7. a second clamping detection assembly; 8. a workpiece clamping space; 9. a first mounting plate; 10. a first rotating electrical machine; 11. a second mounting plate; 12. a second rotating electrical machine; 13. a servo motor; 14. an output pulley set; 15. a first input pulley; 16. a second input pulley; 17. a transmission belt; 18. a tension wheel; 19. a first rotating shaft; 20. a first clamping mechanism; 21. a first bending force sensor; 22. a second rotating shaft; 23. a pull pressure sensor; 24. a second clamping mechanism; 26. a second bending force sensor; 27. a transfer block; 28. a straight cylindrical lifting rack; 29. a sector adjusting gear; 30. an adjusting handle; 31. a clamp body; 32. an accommodating cavity; 33. a stopper; 34. a left clamp block; 35. a right clamp block; 36. a clamping gap; 37. an outer sidewall; 38. an inner sidewall; 39. a drive slot; 40. and (5) cement test pieces.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1 to 6, a cement bending and compression resistance testing machine comprises a test base 1, an electric control device 2, two vertical support frames 3 symmetrically arranged at the upper end of the test base 1, a first nut screw mechanism 4 and a second nut screw mechanism 5 arranged along the vertical support frames 3, a first clamping detection assembly 6 and a second clamping detection assembly 7, wherein a workpiece clamping space 8 is formed between the first clamping detection assembly 6 and the second clamping detection assembly 7;

a first mounting plate 9 is spanned between the top ends of the two vertical supporting frames 3, a first rotating motor 10 is arranged on the first mounting plate 9, and the first clamping detection assembly 6 is downwards arranged on the first mounting plate 9 and driven by the first rotating motor 10;

a second mounting plate 11 is spanned between the first nut screw mechanism 4 and the second nut screw mechanism 5, a second rotating motor 12 is arranged on the first mounting plate 9, and the second clamping detection assembly 7 is upwards arranged on the second mounting plate 11 and driven by the second rotating motor 12.

The above-mentioned content is the utility model discloses a basic scheme, and it has the pulling pressure detection function and the bending force detection function of cement test piece 40 concurrently. When in use, the cement test piece 40 is placed in the workpiece clamping space 8, and two ends of the cement test piece are respectively clamped by the first clamping detection assembly 6 and the second clamping detection assembly 7; when the tension and pressure needs to be detected, the first nut screw mechanism 4 and the second nut screw mechanism 5 are started to realize the lifting action of the second mounting plate 11, so that the second clamping detection assembly 7 is far away from or close to the first clamping detection assembly 6, the tension and pressure action on the cement test piece 40 is realized, and the tension and pressure detection function is realized; when the bending force needs to be detected, the first rotating motor 10 and the second rotating motor 12 are respectively started according to requirements, so that the first clamping detection assembly 6 and the second clamping detection assembly 7 perform reverse rotation actions, the bending and twisting actions of the cement test piece 40 are realized, and the detection function of the bending force is realized.

The utility model discloses in, adopted the drive structure of two side nut screw mechanisms to make second mounting panel 11 can do the lift action more steadily. However, in the conventional scheme, each nut-screw mechanism corresponds to one driving motor, so that certain errors exist more or less in the use process of the two driving motors, and the movement of the two sides is asynchronous (for example, the lifting speed and the distance are different), so that the detection data is distorted.

In order to solve the drawback that bi-motor drive exists the utility model discloses an in some embodiments, select to use the structural scheme of single motor dual output, specifically do: the device also comprises a servo power mechanism for synchronously driving the first nut screw mechanism 4 and the second nut screw mechanism 5. Further, the servo power mechanism comprises a servo motor 13, an output belt pulley set 14, a first input belt pulley 15 acting on the first nut screw mechanism 4, a second input belt pulley 16 acting on the second nut screw mechanism 5, and a transmission belt 17 wound among the output belt pulley set 14, the first input belt pulley 15 and the second input belt pulley 16.

However, the driving belt 17 is easy to have the defects of softness, insufficient transmission and the like in the using process, and in order to enable the driving belt 17 to have a better operation condition, the method adopted by the embodiment is as follows: the device also comprises a plurality of tension pulleys 18, and the transmission belt 17 is wound between the tension pulleys 18 so that the transmission belt 17 is always in a tension state.

The specific composition modes of the first clamping detection assembly 6 and the second clamping detection assembly 7 are various, and a preferable scheme is provided, and specifically comprises the following steps:

the first clamping detection assembly 6 comprises a first rotating shaft 19 vertically penetrating through the first mounting plate 9, a first clamping mechanism 20 assembled at the other end of the first rotating shaft 19, and a first bending force sensor 21 vertically sleeved on the first clamping mechanism 20. The second clamping detection assembly 7 comprises a second rotating shaft 22 vertically penetrating through the second mounting plate 11, a pulling pressure sensor 23 horizontally sleeved at one end of the second rotating shaft 22, a second clamping mechanism 24 assembled at the other end of the second rotating shaft 22, and a second bending force sensor 26 vertically sleeved on the second clamping mechanism 24.

The first clamping detection component 6 and the second clamping detection component 7 are arranged oppositely, and the components and accessories of the first clamping detection component 6 and the second clamping detection component 7 are almost identical, and the difference lies in that when the pressure is pulled in the test, the first clamping detection component 6 is a relatively motionless component, the second clamping detection component 7 is lifted and pulled to press the cement test piece 40, and the pressure data detection function can be realized only by assembling one more pressure pulling sensor 23 in the second clamping detection component 7.

The first clamping mechanism 20 and the second clamping mechanism 24 are more detailed in that both comprise a switching block 27 for fixedly connecting with the first rotating shaft 19/the second rotating shaft 22, a straight cylindrical lifting rack 28 inserted on the switching block 27, a sector adjusting gear 29 rotatably arranged on the switching block 27 and meshed with the straight cylindrical lifting rack 28, an adjusting handle 30 acting on the sector adjusting gear 29, and a clamp body 31 arranged at the upper end of the straight cylindrical lifting rack 28, wherein the clamp body 31 is abutted with the first bending force sensor 21/the second bending force sensor 26. During operation, a detector controls the sector adjusting gear 29 to rotate through the adjusting handle 30 so as to drive the straight cylindrical lifting rack 28 to move up and down, and finally acts on the clamp main body 31 to realize the function of adjusting the clamp main body 31.

The mounting method of the clamp main body 31 is that an accommodating cavity 32 is formed in the first/second bending force sensor 21/26, the clamp main body 31 is located in the accommodating cavity 32, a stopper 33 is further arranged on one side of the accommodating cavity 32 in a protruding mode, and the stopper 33 is abutted to the clamp main body 31 and forms spacing anti-falling fit.

In relation to the above technical solution, the clamp main body 31 includes a left clamping block 34 and a right clamping block 35, and a clamping gap 36 is formed between the left clamping block 34 and the right clamping block 35; holding chamber 32 be big end down's triangle-shaped, left clamp splice 34 and right clamp splice 35 have the lateral wall 37 that from top to bottom gradually leans out, lateral wall 37 can with the inside wall 38 butt in holding chamber 32 forms spacing cooperation. By adopting the scheme, the clamp main body 31 can be changed relative to the accommodating cavity 32 under the action of the straight cylindrical lifting rack 28 on the clamp main body 31, so that the size of the clamping gap 36 is changed, and the cement test pieces 40 with different thickness dimensions are clamped.

The transmission structure between the straight lifting rack 28 and the clamp body 31 is preferably: the lower ends of the left clamping block 34 and the right clamping block 35 are respectively provided with a driving groove 39, and the upper end of the straight cylindrical lifting rack 28 is inserted in the driving groove 39 so as to drive the left clamping block 34 and the right clamping block 35 to move up and down through the straight cylindrical lifting rack 28.

The utility model discloses a well each electrical components, all can realize the control operation through electrically controlled device 2.

The above, only be the utility model discloses a preferred embodiment, it is not right the utility model discloses do any restriction, all according to utility model technical entity to any simple modification, change and the equivalent structure change of doing above embodiment, all still belong to the utility model discloses technical scheme's within the scope of protection.

Claims

1. A cement bending and compression testing machine comprises a testing base (1), an electric control device (2), two vertical supporting frames (3) symmetrically arranged at the upper end of the testing base (1), a first nut screw rod mechanism (4) and a second nut screw rod mechanism (5) arranged along the vertical supporting frames (3), a first clamping detection assembly (6) and a second clamping detection assembly (7), wherein a workpiece clamping space (8) is formed between the first clamping detection assembly (6) and the second clamping detection assembly (7);

the method is characterized in that: a first mounting plate (9) is spanned between the top ends of the two vertical supporting frames (3), a first rotating motor (10) is arranged on the first mounting plate (9), and the first clamping detection assembly (6) is downwards arranged on the first mounting plate (9) and driven by the first rotating motor (10);

first nut screw mechanism (4) and second nut screw mechanism (5) between cross-over connection have second mounting panel (11), be equipped with second rotating electrical machines (12) on first mounting panel (9), second centre gripping determine module (7) upwards set up on second mounting panel (11) and receive second rotating electrical machines (12) drive.

2. The cement bending and compression testing machine of claim 1, wherein: the device also comprises a servo power mechanism for synchronously driving the first nut screw mechanism (4) and the second nut screw mechanism (5).

3. The cement bending and compression testing machine of claim 2, wherein: the servo power mechanism comprises a servo motor (13), an output belt pulley group (14), a first input belt pulley (15) acting on the first nut screw rod mechanism (4), a second input belt pulley (16) acting on the second nut screw rod mechanism (5), and a transmission belt (17) wound among the output belt pulley group (14), the first input belt pulley (15) and the second input belt pulley (16).

4. The cement bending and compression testing machine of claim 3, wherein: the servo power mechanism further comprises a plurality of tension pulleys (18), and the transmission belt (17) is further wound among the tension pulleys (18).

5. The cement bending and compression testing machine as set forth in claim 1, wherein: first centre gripping determine module (6) including vertical first pivot (19) of wearing to establish on first mounting panel (9), assemble first fixture (20) at first pivot (19) another tip to and along vertical first bending force sensor (21) of cup jointing on first fixture (20).

6. The cement bending and compression testing machine of claim 5, wherein: the second clamping detection assembly (7) comprises a second rotating shaft (22) vertically penetrating through the second mounting plate (11), a pulling pressure sensor (23) horizontally sleeved at one end of the second rotating shaft (22), a second clamping mechanism (24) assembled at the other end of the second rotating shaft (22), and a second bending force sensor (26) vertically sleeved on the second clamping mechanism (24).

7. The cement bending and compression testing machine of claim 6, wherein: the first clamping mechanism (20) and the second clamping mechanism (24) respectively comprise a switching block (27) fixedly connected with the first rotating shaft (19)/the second rotating shaft (22), a straight cylindrical lifting rack (28) inserted into the switching block (27), a sector adjusting gear (29) rotatably arranged on the switching block (27) and meshed with the straight cylindrical lifting rack (28), an adjusting handle (30) acting on the sector adjusting gear (29), and a clamp main body (31) arranged at the upper end of the straight cylindrical lifting rack (28), wherein the clamp main body (31) is abutted to the first bending force sensor (21)/the second bending force sensor (26).

8. The cement bending and compression testing machine of claim 7, wherein: set up holding chamber (32) in first power of bending sensor (21)/the second power of bending sensor (26), anchor clamps main part (31) be located holding chamber (32) in, first power of bending sensor (21)/the second power of bending sensor (26) still towards holding chamber (32) one side protruding dog (33) that is equipped with, dog (33) with anchor clamps main part (31) butt and form spacing anticreep cooperation.

9. The cement bending and compression testing machine of claim 8, wherein: the clamp main body (31) comprises a left clamping block (34) and a right clamping block (35), and a clamping gap (36) is formed between the left clamping block (34) and the right clamping block (35);

holding chamber (32) be big end down's triangle-shaped, left clamp splice (34) and right clamp splice (35) have from top to bottom outside wall (37) that gradually leans out, outside wall (37) can with inside wall (38) butt of holding chamber (32) forms spacing cooperation.

10. The cement bending and compression testing machine of claim 9, wherein: the lower ends of the left clamping block (34) and the right clamping block (35) are respectively provided with a driving groove (39), the upper end of the straight cylindrical lifting rack (28) is inserted into the driving groove (39), and the straight cylindrical lifting rack (28) drives the left clamping block (34) and the right clamping block (35) to move up and down.