CN219737048U - Gap eliminating structure of dynamic compression shear testing machine - Google Patents

Abstract

The utility model discloses a gap eliminating structure of a dynamic pressure shear testing machine, which comprises a base, an upright post, a pressing plate, a cross beam and an X-shaped key. The base is provided with a horizontal chute for the horizontal sliding of the workbench, and both sides of the base are inwards sunken to form a first X-shaped groove and a thread groove. The upright column is inwards sunken to be provided with a second X-shaped groove corresponding to the first X-shaped groove, expansion plates are arranged on two sides of the upright column, and threaded holes matched with the threaded grooves are formed in the expansion plates. The pressing plate is in sliding connection with the upright post through a sliding rail, and a vertical driving piece is arranged between the pressing plate and the base. The crossbeam is installed and fixed to the stand top and connects each stand, and the both sides of crossbeam are all inwards sunken to be formed with first X type recess and thread groove. The X-shaped key is embedded type and fixedly installed between the first X-shaped groove and the second X-shaped groove, the first X-shaped groove and the second X-shaped groove are all abutted with the side wall of the X-shaped key, the connection stability between the base and the upright post is improved, and the test error is reduced.

Description

Gap eliminating structure of dynamic compression shear testing machine

Technical Field

The utility model belongs to the technical field of dynamic compression shear tests, and particularly relates to a gap eliminating structure of a dynamic compression shear test machine.

Background

In the existing dynamic compression shear testing machine, an upper cross beam is fixed above a base through a stand column, and the upper cross beam and the base are connected with the stand column through bolts. In the test process of the dynamic compression shear tester, the load sensor can be influenced by tangential force in the vertical direction and the horizontal direction. As the upright posts, the upper cross beam and the base are all connected by bolts, bolt gaps can be generated when the bolts are connected, so that larger errors are generated in actual measurement data.

The prior patent discloses a dynamic compression shear tester device (application number: 20222067955. X) which is provided with a wedge gap eliminating device, but in the patent device, an original upright post is removed, a shear cylinder is replaced by a pendulum shaft type shear horizontal cylinder, and the wedge gap eliminating device is additionally arranged in the transverse direction and the longitudinal direction of the whole machine. The wedge block gap eliminating devices are arranged on the four guide rails of the device, the change range is large, the original supporting structure is replaced, the change cost is high, and the application range is low.

Disclosure of Invention

According to the gap eliminating structure of the dynamic shear testing machine, the first X-shaped groove is formed in the base of the existing dynamic shear testing machine, the second X-shaped groove is formed in the upright post, and the X-shaped key is embedded between the first X-shaped groove and the second X-shaped groove, so that the connection relation among the base, the upright post and the cross beam is stable and firm in dynamic shear testing, the installation gap between the base and the cross beam and between the upright post is reduced, and further shaking of the upright post and the cross beam in the testing is reduced, and testing errors are reduced. Moreover, the gap eliminating structure disclosed by the utility model has the advantages of small change, low change cost and wide application range on the existing dynamic shear pressure testing machine, and maintains the original testing advantages of the dynamic shear pressure testing machine.

The utility model is realized by the following technical scheme:

a gap eliminating structure of a dynamic compression shear testing machine comprises a base, an upright post, a pressing plate, a cross beam and an X-shaped key. The base is provided with a horizontal chute for the horizontal sliding of the workbench, and the end part of the base is provided with a horizontal driving piece for driving the workbench to slide, and the horizontal driving piece can drive the workbench to move along the extending direction of the horizontal chute. Both sides of the base are inwards sunken to form a first X-shaped groove and a thread groove. The stand has a plurality of and installs to the both sides of base, and the stand inwards sunken second X type recess that corresponds with first X type recess has the extension board, has offered on the extension board with screw groove complex screw hole. The clamp plate passes through slide rail sliding connection with the stand, and the clamp plate is located the workstation top, installs vertical driving piece between clamp plate and the base, and vertical driving piece can drive the clamp plate and remove in vertical direction. The cross beam is fixedly arranged on the tops of the upright posts and is connected with each upright post so as to play a role in connecting and fixing the tops of the upright posts. Both sides of the cross beam are inwards sunken to form a first X-shaped groove and a thread groove. The X-shaped key is embedded type fixed mounting to the space between the first X-shaped groove and the second X-shaped groove, and the first X-shaped groove and the second X-shaped groove are all abutted with the side wall of the X-shaped key so as to reduce the connection clearance between the base and the upright post, improve the connection stability and further reduce the test error.

Further, the corner of the X-shaped key is sunken to form an installation space, an installation block is fixed in the installation space and protrudes out of the surface of the X-shaped key, and an installation groove for accommodating the installation block protruding out of the surface of the X-shaped key is formed in the second X-shaped groove, so that the X-shaped key is installed and fixed to the second X-shaped groove, and the connection firmness of the X-shaped key and the second X-shaped groove is improved.

Further, a mounting hole is formed in the mounting block, the side wall of the mounting block is fixed to the X-shaped key, a loading and unloading gap is formed between the bottom of the mounting block and the X-shaped key, and the X-shaped key can be conveniently dismounted.

Further, the X-shaped keys comprise long keys and short keys, the long keys and the short keys are used in combination or the short keys are used in combination, and the application range of the X-shaped keys is improved.

Further, the gap eliminating structure further comprises an inclined support plate, the inclined support plate is fixedly connected to the upright post and the base, the connection firmness between the base and the upright post is improved, and the support strength of the upright post is improved.

Further, the junction of bracing extension board and stand is equipped with a plurality of floor, increases the connection fastness between bracing extension board and the stand, improves the joint strength between bracing extension board and the stand, and then increases the support reliability of stand.

Further, the T-shaped groove is formed in the inner side of the sliding rail, the sliding block mechanism of the pressing plate is matched with the T-shaped groove, the sliding block mechanism is matched with the T-shaped groove in the sliding rail, sliding limiting of the sliding block mechanism is achieved, and the sliding block mechanism of the pressing plate is prevented from being separated from the sliding rail when sliding along the extending direction of the T-shaped groove. The strength of the sliding connection between the pressing plate and the upright post is increased.

Further, the cross beam is provided with a plurality of hollowed-out holes, so that weight of the cross beam is reduced, and the cross beam is convenient to install, disassemble and transport.

Further, the joint of the stand column and the base and the joint of the stand column and the cross beam are provided with a plurality of groups of X-shaped keys, so that the connection stability of the joint of the stand column and the base and the joint of the stand column and the cross beam is improved, the connection gap of the joint is reduced, and further the test error is reduced.

Drawings

FIG. 1 is a schematic diagram illustrating the connection of an exemplary embodiment of a gap elimination structure of a dynamic compression shear test machine according to the present utility model;

FIG. 2 is a schematic diagram illustrating an exemplary embodiment of a gap eliminating structure of a dynamic compression shear testing machine according to the present utility model;

FIG. 3 is a schematic view showing a part of FIG. 2 at A;

FIG. 4 is a schematic diagram illustrating another exemplary embodiment of a gap eliminating structure of a dynamic compression shear testing machine according to the present utility model;

FIG. 5 is a schematic view showing a part of the view of FIG. 4 at B;

FIG. 6 is a schematic diagram illustrating an exemplary embodiment of a post according to the present utility model;

FIG. 7 is a schematic view showing a part of the view of FIG. 6 at C;

FIG. 8 is a schematic diagram illustrating one exemplary embodiment of a long key in the present utility model;

fig. 9 is a schematic diagram illustrating the positional relationship of one exemplary embodiment of the short keys in the present utility model.

Reference numerals:

1. a base; 11. a horizontal chute; 12. a first X-shaped groove; 13. a thread groove; 2. a column; 21. a second X-shaped groove; 211. a mounting groove; 22. an expansion board; 221. a threaded hole; 3. a pressing plate; 31. a slide rail; 311. a T-shaped groove; 32. a vertical driving member; 4. a cross beam; 41. a hollowed hole; 5. an X-type bond; 51. an installation space; 52. a mounting block; 521. a mounting hole; 53. a loading and unloading gap; 54. a long key; 55. a short key; 6. a work table; 61. a horizontal driving member; 7. a diagonal bracing support plate; 71. rib plates.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, in the embodiments of the present utility model, terms such as left, right, up, down, front, and back are merely relative terms or references to a normal use state of a product, i.e. a traveling direction of the product, and should not be construed as limiting.

In addition, the dynamic terms such as "relative movement" in the embodiments of the present utility model include not only a change in position but also a movement in which a state is changed without a relative change in position such as rotation or rolling.

Finally, it is noted that when an element is referred to as being "on" or "disposed on" another element, it can be on the other element or intervening elements may also be present. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.

The gap eliminating structure of the dynamic pressure shear testing machine as shown in fig. 1 to 9 comprises a base 1, an upright post 2, a pressing plate 3, a cross beam 4 and an X-shaped key 5. The base 1 is provided with a horizontal chute 11 for the horizontal sliding of the workbench 6, and the end part of the base 1 is provided with a horizontal driving piece 61 for driving the workbench 6 to slide, and the horizontal driving piece 61 can drive the workbench 6 to move along the extending direction of the horizontal chute 11. Both sides of the base 1 are concavely formed with a first X-shaped groove 12 and a screw groove 13. The upright post 2 is provided with a plurality of second X-shaped grooves 21 which are arranged on two sides of the base 1 in a recessed manner, the second X-shaped grooves 21 which correspond to the first X-shaped grooves 12 are arranged on the upright post 2, extension plates 22 are arranged on two sides of the upright post 2, and threaded holes 221 which are matched with the threaded grooves 13 are formed in the extension plates 22. The clamp plate 3 passes through slide rail 31 sliding connection with stand 2, and clamp plate 3 is located workstation 6 top, installs vertical driving piece 32 between clamp plate 3 and the base 1, and vertical driving piece 32 can drive clamp plate 3 and remove in vertical direction. The cross beam 4 is fixedly mounted on the top of the upright posts 2 and is connected with each upright post 2 to perform a connecting and fixing function on the top of each upright post 2. Both sides of the cross beam 4 are concavely formed with a first X-shaped groove 12 and a screw groove 13. The X-shaped key 5 is embedded and fixedly installed between the first X-shaped groove 12 and the second X-shaped groove 21, and the first X-shaped groove 12 and the second X-shaped groove 21 are abutted with the side wall of the X-shaped key 5 so as to reduce the connection gap between the base 1 and the upright post 2 and between the cross beam 4, improve the connection stability and further reduce the test error.

In an embodiment, when the dynamic compression shear testing machine is installed, the X-shaped key 5 is firstly embedded and installed in the first X-shaped groove 12 or the second X-shaped groove 21, then the upright post 2 is installed on the base 1, the bottom of the upright post 2 is abutted with the base 1, the top of the upright post 2 is abutted with the cross beam 4, and the X-shaped key 5 is positioned between the first X-shaped groove 12 and the second X-shaped groove 21, so that the stable connection between the base 1 and the cross beam 4 and the upright post 2 is realized. Finally, the fastening bolts penetrate through the threaded holes 221 and are screwed into the threaded grooves 13, so that the fastening connection between the base 1 and the upright post 2 and the fastening connection between the cross beam 4 are realized. Finally, the dynamic compression shear testing machine is started, the horizontal driving piece 61 drives the workbench 6 to slide along the extending direction of the horizontal chute 11, the vertical driving piece 32 drives the pressing plate 3 to downwards extrude the workpiece to be tested, when tangential force appears between the workbench 6 and the workpiece or the pressing plate 3 extrudes the workpiece, as the upright post 2 is connected with the base 1 and the cross beam 4 by adopting the X-shaped key 5, the X-shaped key 5 bears main loading force in the horizontal direction and the vertical direction, the X-shaped key 5 is embedded into the first X-shaped groove 12 and the second X-shaped groove 21, the installation clearance is small, the shaking degree generated during loading is low, and therefore, compared with the test measurement error, the error generated by singly using the bolting is smaller.

It should be noted that, in the prior art, bolts are adopted to connect between the upright post 2 and the base 1 and between the upright post 2 and the cross beam 4, when the bolts are adopted, the gap between the bolts and the threaded holes 221 is larger, and when the dynamic compression shear testing machine is in a loading state, the shearing force suffered by the bolts is larger, therefore, when only the bolts are adopted, the joint can generate larger shaking gap, and the error is larger. In this anti-backlash structure, adopt bolted connection to install fixedly stand 2 and crossbeam 4, when dynamic pressure shear test machine is in loading state, main atress department is X type key 5 atress, and the long key 54 and the short key 55 of X type key 5 all slope setting, and its atress intensity is high, and during the atress, the clearance that rocks between X type key 5 and the first X type recess 12 and the second X type recess 21 of its both sides is little, and the experimental error of production is little, helps improving test stability and test result's accuracy.

Preferably, the corners of the X-shaped keys 5 are recessed to form mounting spaces 51, mounting blocks 52 are fixed in the mounting spaces 51, the mounting blocks 52 protrude from the surface of the X-shaped keys 5, and mounting grooves 211 for accommodating the mounting blocks 52 protruding from the surface of the X-shaped keys 5 are formed in the second X-shaped grooves 21 so as to mount and fix the X-shaped keys 5 to the second X-shaped grooves 21, and the connection firmness of the X-shaped keys 5 and the second X-shaped grooves 21 is improved.

Preferably, the mounting block 52 is provided with a mounting hole 521, the side wall of the mounting block 52 is fixed to the X-shaped key 5, and a mounting and dismounting gap 53 is arranged between the bottom of the mounting block 52 and the X-shaped key 5, so that the mounting and dismounting of the X-shaped key 5 can be realized conveniently.

In one embodiment, when the X-shaped key 5 is installed, the X-shaped key 5 is first placed in the second X-shaped groove 21, so that the mounting block 52 protruding from the surface of the X-shaped key 5 protrudes into the mounting groove 211 inside the second X-shaped groove 21. Then the X-shaped key 5 is screwed into the second X-shaped groove 21 through the bolt penetrating installation hole 521, so that the connection and the fixation of the X-shaped key 5 and the second X-shaped groove 21 are realized. A mounting/dismounting gap 53 is provided between the bottom of the mounting block 52 and the X-shaped key 5, so that an operator can screw the bolt located in the mounting hole 521 by using a tool such as a wrench.

Preferably, the X-shaped key 5 includes a long key 54 and a short key 55, and the long key 54 and the short key 55 are used in combination or the short key 55 is used in combination, so that the application range of the X-shaped key 5 is improved.

In one embodiment, as shown in fig. 2, the X-shaped key 5 adopted between the base 1 and the upright 2 is in the form of a combination of a long key 54 and a short key 55; the X-shaped key 5 adopted between the cross beam 4 and the upright post 2 is in the form of a combination of two groups of short keys 55. The combination of the two groups of short keys 55 can adapt to the situation that the beam 4 is thinner, and the loading force between the beam 4 and the upright post 2 is smaller than the loading force between the base 1 and the upright post 2 when the dynamic compression shear testing machine is in a loading state, so that the stress situation between the beam 4 and the upright post 2 can be satisfied by adopting the combination of the two groups of short keys 55.

Preferably, the anti-backlash structure further comprises an inclined support plate 7, wherein the inclined support plate 7 is fixedly connected to the upright post 2 and the base 1, so that the connection firmness between the base 1 and the upright post 2 is improved, and the support strength of the upright post 2 is improved.

Preferably, the junction of bracing extension board 7 and stand 2 is equipped with a plurality of floor 71, increases the connection fastness between bracing extension board and the stand 2, improves the joint strength between bracing extension board and the stand 2, and then increases the support reliability of stand 2.

In an embodiment, the inclined support plate is adopted, the bottom of the inclined support plate is fixedly connected with the base 1 through bolts, and the side part of the inclined support plate is fixedly connected with the upright post 2 through the plurality of rib plates 71, so that the stability and the firmness of the upright post 2 mounted on the base 1 are enhanced.

Preferably, a T-shaped groove 311 is formed in the inner side of the sliding rail 31, a sliding block mechanism of the pressing plate 3 is matched with the T-shaped groove 311, the sliding block mechanism is matched with the T-shaped groove 311 in the sliding rail 31, sliding limiting of the sliding block mechanism is achieved, and the sliding block mechanism of the pressing plate 3 is prevented from being separated from the sliding rail 31 when sliding along the extending direction of the T-shaped groove 311. The strength of the sliding connection between the pressure plate 3 and the upright 2 is increased.

Preferably, the cross beam 4 is provided with a plurality of hollow holes 41, so that weight of the cross beam 4 is reduced, and the cross beam 4 is convenient to install, disassemble and transport.

Preferably, the joint of the upright post 2 and the base 1 and the joint of the upright post 2 and the cross beam 4 are provided with a plurality of groups of X-shaped keys 5, so that the connection stability of the joint of the upright post 2 and the base 1 and the joint of the upright post 2 and the cross beam 4 is improved, the connection gap of the joint is reduced, and further the test error is reduced.

When adopting the gap eliminating structure of the dynamic pressure shear testing machine, the first X-shaped groove 12 is formed in the base 1 of the existing dynamic pressure shear testing machine, the second X-shaped groove 21 is formed in the upright post 2, and the X-shaped key 5 is embedded between the first X-shaped groove 12 and the second X-shaped groove 21, so that the connection relation among the base 1, the upright post 2 and the cross beam 4 is stable and firm during dynamic pressure shear testing, the installation gap between the base 1 and the cross beam 4 and the upright post 2 is reduced, and further shaking of the upright post 2 and the cross beam 4 during testing is reduced, and test errors are reduced. Moreover, the gap eliminating structure disclosed by the utility model has the advantages of small change, low change cost and wide application range on the existing dynamic shear pressure testing machine, and maintains the original testing advantages of the dynamic shear pressure testing machine.

The foregoing is merely exemplary of the present utility model and is not intended to limit the present utility model. Various modifications and variations of the present utility model will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are to be included in the scope of the claims of the present utility model.

Claims (9)

1. The utility model provides a dynamic pressure shear test machine crack structure that disappears which characterized in that includes:

the base is provided with a horizontal chute for the horizontal sliding of the workbench, the end part of the base is provided with a horizontal driving piece for driving the workbench to slide, and both sides of the base are inwards recessed to form a first X-shaped groove and a thread groove;

the stand columns are provided with a plurality of stand columns and are arranged on two sides of the base, the stand columns are inwards recessed with second X-shaped grooves corresponding to the first X-shaped grooves, two sides of each stand column are provided with expansion plates, and threaded holes matched with the threaded grooves are formed in the expansion plates;

the pressing plate is in sliding connection with the upright post through a sliding rail, the pressing plate is positioned above the workbench, and a vertical driving piece is arranged between the pressing plate and the base;

the cross beam is fixedly arranged at the tops of the upright posts and connected with the upright posts, and both sides of the cross beam are inwards recessed to form the first X-shaped groove and the thread groove;

the X-shaped key is embedded and fixedly installed between the first X-shaped groove and the second X-shaped groove, and the first X-shaped groove and the second X-shaped groove are abutted with the side wall of the X-shaped key.

2. The gap eliminating structure of the dynamic pressure shear testing machine according to claim 1, wherein an installation space is formed by recessing corners of the X-shaped key, an installation block is fixed in the installation space, the installation block protrudes out of the surface of the X-shaped key, and an installation groove for accommodating the installation block protruding out of the surface of the X-shaped key is formed in the second X-shaped groove.

3. The gap eliminating structure of the dynamic pressure shear testing machine according to claim 2, wherein a mounting hole is formed in the mounting block, the side wall of the mounting block is fixed to the X-shaped key, and a loading and unloading gap is formed between the bottom of the mounting block and the X-shaped key.

4. The gap eliminating structure of dynamic pressure shear test machine according to claim 1, wherein the X-shaped key comprises a long key and a short key, and the long key and the short key are used in combination or the short key is used in combination.

5. The dynamic compression shear testing machine backlash eliminating structure according to claim 1, further comprising a diagonal brace support plate, wherein the diagonal brace support plate is fixedly connected to the upright and the base.

6. The gap eliminating structure of dynamic pressure shear testing machine according to claim 5, wherein a plurality of rib plates are arranged at the joint of the diagonal bracing support plate and the upright post.

7. The gap eliminating structure of the dynamic pressure shear testing machine according to claim 1, wherein a T-shaped groove is formed in the inner side of the sliding rail, and the sliding block mechanism of the pressing plate is matched with the T-shaped groove.

8. The gap eliminating structure of the dynamic pressure shear testing machine according to claim 1, wherein the cross beam is provided with a plurality of hollowed-out holes.

9. The gap eliminating structure of the dynamic pressure shear testing machine according to claim 1, wherein a plurality of groups of X-shaped keys are arranged at the joint of the upright post and the base and the joint of the upright post and the cross beam.