CN112362465A - Jaw device suitable for tensile testing machine - Google Patents
Jaw device suitable for tensile testing machine Download PDFInfo
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- CN112362465A CN112362465A CN202110046607.3A CN202110046607A CN112362465A CN 112362465 A CN112362465 A CN 112362465A CN 202110046607 A CN202110046607 A CN 202110046607A CN 112362465 A CN112362465 A CN 112362465A
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- bulge
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
Abstract
The invention discloses a jaw device suitable for a tensile testing machine, which comprises an upper jaw unit, a lower jaw unit and a first driving unit, wherein the upper jaw unit is connected with the lower jaw unit; the upper jaw unit comprises a movable cross beam and a first clamping module, and the first clamping module is connected with the movable cross beam; the lower jaw unit comprises a static cross beam and a second clamping module, the second clamping module is connected with the static cross beam, and the second clamping module is arranged opposite to the first clamping module; a first through hole is formed in the static cross beam and is positioned below the second clamping module; and two ends of the first driving unit are respectively connected with the upper jaw unit and the lower jaw unit to drive the upper jaw unit to move relative to the lower jaw unit. The invention can directly drop the steel bar into the receiving hopper positioned below the lower jaw unit after the test, is safe and reliable, reduces the test cost and improves the test safety and the work efficiency.
Description
Technical Field
The invention belongs to the technical field of tensile test equipment, and particularly relates to a jaw device suitable for a tensile test machine.
Background
In a reinforced concrete structure, concrete mainly plays a role of compression resistance, and steel bars mainly play a role of tension resistance. The mechanical reaction of a reinforced concrete structure depends to a large extent on the material properties of the reinforced concrete. The steel bar is mainly measured by a tensile test, a bending test and the like. The test for determining a series of properties of a material under a tensile load is called a tensile test, and is one of the basic methods for testing the mechanical properties of a material, and is mainly used for checking whether the material meets specified standards and researching the properties of the material.
The tensile test can determine a series of strength indexes and plasticity indexes of the material. Strength generally refers to the ability of a material to resist elastic deformation, plastic deformation, and fracture under an external force. When a material is subjected to a tensile load, the phenomenon in which the load does not increase but significant plastic deformation continues is called yielding. The stress at yield is known as the yield point or physical yield strength. There are many materials in engineering that do not have a significant yield point, and the yield strength is usually the stress value at which the material undergoes a residual plastic deformation of 0.2%, and is referred to as the yield limit or yield strength. The maximum stress value reached by a material before fracture is known as the tensile strength or strength limit. Plasticity refers to the ability of a metal material to plastically deform under a load without failure, and is commonly indicated by elongation and reduction of area. Elongation, also called elongation, is the percentage of the total elongation of a material sample after being broken by a tensile load to the original length. The reduction of area is the percentage of the ratio of the area of reduced area to the original area of cross-section of the material sample after it has been broken by a tensile load. Conditional yield strength, strength limit, elongation and reduction of area are four performance criteria that are often determined in tensile tests. Furthermore, the modulus of elasticity, the limit of proportion, the limit of elasticity, etc. of the material can be determined.
The clamp of keeping silent on the existing market is because receiving powerful tensile test and damaging easily, and along with the increase of live time, the screw on the clamp of keeping silent is not hard up easily, and the reinforcing bar disintegrating slag after the experiment falls jaw unit under easily, damages equipment easily, leads to experimental cost to increase, and work efficiency low grade problem.
Disclosure of Invention
Aiming at the problems, the invention provides the jaw device suitable for the tensile testing machine, which can realize that the steel bars directly fall into the receiving hopper from the clamp after the test, has simple structure, convenient installation, safety and reliability, reduces the test cost, and improves the test safety and the working efficiency.
In order to achieve the technical purpose and achieve the technical effects, the invention is realized by the following technical scheme:
a jaw apparatus suitable for use in a tensile testing machine, comprising:
the upper jaw unit comprises a movable cross beam and a first clamping module, and the first clamping module is connected with the movable cross beam;
the lower jaw unit comprises a static cross beam and a second clamping module, the second clamping module is connected with the static cross beam, and the second clamping module is arranged opposite to the first clamping module; a first through hole is formed in the static cross beam and is positioned below the second clamping module;
the two ends of the first driving unit are respectively connected with the upper jaw unit and the lower jaw unit and drive the upper jaw unit to move relative to the lower jaw unit;
wherein the first clamping module comprises:
a second driving unit;
the pressure head is connected with the second driving unit and driven by the second driving unit to perform reciprocating motion;
the surface of the first inner lining plate is provided with a first bulge and a second bulge which are opposite, and the axes of the first bulge and the second bulge are extended and then intersected to form a V shape;
the first outer stop block and the second outer stop block are oppositely arranged and are connected with the movable cross beam, a third bulge is arranged on the first outer stop block, and a fourth bulge is arranged on the second outer stop block;
the first base plate and the second base plate are arranged oppositely and are connected with the movable cross beam, and the axes of the first base plate and the first bulge and the third bulge are parallel to each other and form a first limiting space together; the axes of the second base plate, the second bulge and the fourth bulge are parallel to each other, and a second limiting space is formed by the second base plate, the second bulge and the fourth bulge;
the first clamp and the second clamp are oppositely arranged and are connected with the pressure head, the part of the first clamp is positioned in the first limiting space, the part of the second clamp is positioned in the second limiting space, and the pressure head drives the first clamp and the second clamp to move relatively in the first limiting space and the second limiting space to clamp a finished object.
Optionally, the first clamp and the second clamp have the same structure, and both include:
the upper jaw sliding seat is partially positioned in the first limiting space or the second limiting space, is clamped with the end part of the pressure head, and is driven by the pressure head to perform reciprocating motion in the first limiting space or the second limiting space;
and the first clamping block is connected with the upper jaw sliding seat and is in contact with the pressure head.
Optionally, a wear-resisting plate is arranged between the upper jaw sliding seat and the corresponding first backing plate or second backing plate, and the wear-resisting plate is in sliding contact with the upper jaw sliding seat.
Optionally, a groove is formed in the upper jaw sliding seat, and the end portion of the pressure head is clamped in the groove.
Optionally, the groove is provided with a limiting plate, and the limiting plate covers the groove and is used for limiting the pressure head.
Optionally, the first and second clamps further comprise:
the first outer lining plate and the second outer lining plate are oppositely arranged and are respectively connected with the first bulge and the third bulge or are respectively connected with the second bulge and the fourth bulge.
Optionally, the second clamping module comprises:
a third driving unit;
the surface of the second inner lining plate is provided with a fifth bulge and a sixth bulge which are opposite, and the axes of the fifth bulge and the sixth bulge are extended and then intersected to form an inverted V shape;
the third outer stop block and the fourth outer stop block are oppositely arranged and are connected with the static cross beam, a seventh bulge is arranged on the third outer stop block, and an eighth bulge is arranged on the fourth outer stop block;
the third base plate and the fourth base plate are oppositely arranged and are connected with the static cross beam, the axes of the third base plate and the fifth bulge and the seventh bulge are parallel, and the third base plate, the fifth bulge and the seventh bulge jointly form a third limiting space; the fourth backing plate is parallel to the axes of the sixth bulge and the eighth bulge, and the fourth backing plate, the sixth bulge and the eighth bulge form a fourth limiting space;
the third clamp and the fourth clamp are oppositely arranged and are connected with the third driving unit, part of the third clamp is located in the third limiting space, part of the fourth clamp is located in the fourth limiting space, and the third driving unit drives the third clamp and the fourth clamp to move relatively in the third limiting space and the fourth limiting space to clamp objects.
Optionally, the third clamp and the fourth clamp have the same structure, and both include:
the lower jaw sliding seat is partially positioned in the third limiting space or the fourth limiting space, is connected with the third driving unit, and is driven by the third driving unit to perform reciprocating motion in the third limiting space or the fourth limiting space;
and the second clamping block is connected with the lower jaw sliding seat.
Optionally, the third driving unit comprises:
the connecting plate is positioned below the first through hole in the static cross beam and is parallel to the static cross beam, and a second through hole corresponding to the first through hole is formed in the connecting plate;
one end of the guide rod is connected with the connecting plate, and the other end of the guide rod is connected with the static cross beam in a sliding manner;
the two ends of the first lower jaw longitudinal connecting rod are respectively hinged with the connecting plate and a lower jaw sliding seat in the third clamp;
the two ends of the second lower jaw longitudinal connecting rod are respectively hinged with the connecting plate and a lower jaw sliding seat in the fourth clamp;
and one end of the driver is connected with the connecting plate, the other end of the driver is connected with the static cross beam, and the driver drives the connecting plate to drive the guide rod, the first lower jaw longitudinal connecting rod and the second lower jaw longitudinal connecting rod to move.
Compared with the prior art, the invention has the beneficial effects that:
the invention can realize that the steel bar directly falls into the receiving hopper positioned below the lower jaw unit after the test, is safe and reliable, reduces the test cost and improves the test safety and the work efficiency.
Furthermore, the first outer stop block and the second outer stop block are positioned by making special shapes, and the outer stop blocks and the movable cross beam are connected by keys, so that the loosening of screws after the test is avoided.
Furthermore, the jaw device is simple in structure, convenient to install and very beneficial to popularization.
Drawings
In order that the present disclosure may be more readily and clearly understood, reference is now made to the following detailed description of the present disclosure taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a schematic view of the overall configuration of a jaw apparatus according to an embodiment of the present invention;
FIG. 2 is a front view of the jaw apparatus of FIG. 1;
FIG. 3 illustrates an upper jaw unit and a movable cross member in one embodiment of the present invention;
FIG. 4 is a top view of the upper jaw unit in one embodiment of the present invention;
FIG. 5 illustrates a lower jaw unit and a stationary beam in one embodiment of the present invention;
FIG. 6 is a top view of the lower jaw unit in one embodiment of the present invention;
FIG. 7 is a cross-sectional view of the lower jaw unit in one embodiment of the present invention;
in the figure: 1-an upper jaw unit, 2-a second driving unit, 3-a pressure head, 4-a first clamping block, 5-an upper jaw sliding seat, 6-a wear-resisting plate, 7-a first outer stop block, 8-a first inner side lining plate, 9-a first outer side lining plate, 10-a second outer side lining plate, 11-a first backing plate, 12-a lower jaw unit, 13-a driver, 14-a lower jaw sliding seat, 15-a third outer stop block, 16-a lower jaw plug plate, 17-a second inner side lining plate, 18-a first lower jaw longitudinal connecting rod, 19-a connecting plate, 20-an inner stop block, 21-a guide rod, 22-an object to be detected, 23-a movable beam, 24-a static beam, 25-a sliding sleeve, 26-a guide rod upright column and 27-a receiving hopper.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the scope of the invention.
The following detailed description of the principles of the invention is provided in connection with the accompanying drawings.
Example 1
As shown in fig. 1-2, the present invention provides a jaw apparatus suitable for a tensile testing machine, comprising:
the upper jaw unit 1 comprises a movable cross beam 23 and a first clamping module, and the first clamping module is connected with the movable cross beam 23;
the lower jaw unit 12 comprises a static cross beam 24 and a second clamping module, the second clamping module is connected with the static cross beam 24, and the second clamping module is arranged opposite to the first clamping module; a first through hole is formed in the static cross beam 24 and is positioned below the second clamping module, and is used for enabling the object 22 to be tested to directly fall into the receiving hopper 27 after the test;
the two ends of the first driving unit are respectively connected with the upper jaw unit 1 and the lower jaw unit 12, the upper jaw unit 1 is driven to move relative to the lower jaw unit 12, and in an actual tensile test, the two ends of an object to be tested (such as a steel bar) are respectively placed into the first clamping module and the second clamping module to realize clamping; and then starting the first driving unit, driving the upper jaw unit 1 by the first driving unit to drive one end of the object to be tested to move towards the direction far away from the other end, and finally realizing stretching to finish the stretching test.
In a specific implementation manner of the embodiment of the present invention, as shown in fig. 1 and fig. 2, the first driving unit includes four sliding sleeves 25 and four guide rod uprights 26, each sliding sleeve 25 is respectively disposed in a through hole at four corners of the movable cross beam 23, and is fixedly connected to the movable cross beam 23 (two ends of each sliding sleeve are positioned by a retaining ring), and each guide rod upright 26 is axially and slidably engaged with the corresponding sliding sleeve 25 to drive the movable cross beam 23 to move in the vertical direction. In other embodiments of the embodiment of the present invention, the first driving unit may have other structures as long as the relative movement of the upper jaw unit 1 with respect to the lower jaw unit 12 can be realized.
In a specific implementation of the embodiment of the present invention, as shown in fig. 3 and 4, the first clamping module includes:
a second drive unit 2;
the pressure head 3 is connected with the second driving unit 2 and driven by the second driving unit 2 to perform reciprocating motion; in a specific implementation process, the second driving unit 2 can be an oil cylinder, and the pressure head 3 is connected with a piston rod of the oil cylinder; the cross section of the pressure head 3 is in a convex shape;
the surface of the first inner lining plate 8 is provided with a first bulge and a second bulge which are opposite, and the axes of the first bulge and the second bulge are extended and then intersected to form a V shape;
a first external stop 7 and a second external stop, which are arranged oppositely, and are connected with the movable beam 23, for example, through screws or bolts; a third bulge corresponding to the first bulge is arranged on the first outer stop block 7, and a fourth bulge corresponding to the second bulge is arranged on the second outer stop block;
the first base plate 11 and the second base plate which are oppositely arranged are connected with the movable cross beam 23; the axes of the first backing plate 11 and the first bulge and the third bulge are parallel to each other, and the first backing plate, the first bulge and the third bulge form a first limiting space; the axes of the second base plate, the second bulge and the fourth bulge are parallel to each other, and a second limiting space is formed by the second base plate, the second bulge and the fourth bulge; in the preferred implementation process of the embodiment of the invention, the first backing plate 11 and the second backing plate are perpendicular to the first inner lining plate 8, the axial cross sections of the first limiting space and the second limiting space are parallelogram, and the included angle between the adjacent edges is a non-right angle;
the first anchor clamps and the second anchor clamps that set up relatively, the two all with pressure head 3 links to each other, and the part of first anchor clamps is located in first spacing space, the part of second anchor clamps is located the spacing space of second, by pressure head 3 drives the two and is in first spacing space and the spacing space of second realize relative motion, accomplish the clamp of thing.
As shown in fig. 3 and 4, in a specific implementation manner of the embodiment of the present invention, the first clamp and the second clamp have the same structure, and both include:
the upper jaw sliding seat 5 is partially positioned in the first limiting space or the second limiting space, is clamped with the end part of the pressure head 3, and is driven by the pressure head 3 to perform reciprocating motion in the first limiting space or the second limiting space; in a specific embodiment of the invention, the upper jaw sliding base 5 is of a wedge-shaped structure, a groove is arranged on the upper jaw sliding base 5, and the end part of the pressure head 3 is clamped in the groove. In order to prevent the pressure head 3 from moving, a limiting plate is arranged at the groove, covers the groove and is used for limiting the pressure head 3;
the first clamping block 4 is connected with the upper jaw sliding seat 5 and is in contact with the pressure head 3; in the specific implementation process, the first clamping blocks 4 of the first and second clamps are respectively provided with a groove for accommodating the object 22 to be measured (such as a steel bar).
In summary, the working principle of the first clamping module in this embodiment is specifically as follows:
the second driving unit 2 is used for driving the pressing head 3 to move downwards along the vertical direction;
the pressure head 3 drives the upper jaw sliding seats in the first clamp and the second clamp to slide along the corresponding first base plate 11 and the corresponding second base plate, so that the first clamping blocks 4 in the first clamp and the second clamp are driven to synchronously move downwards and relatively, the gap between the first clamping blocks 4 in the first clamp and the second clamp is reduced, and the purpose of clamping the object to be detected 22 is achieved.
In a specific implementation process, a through-type through hole is formed in the movable cross beam 23, and the first clamping module is located in the through-type through hole.
In a specific embodiment of the present invention, as shown in fig. 5 and 6, the second clamping module includes:
a third driving unit;
the surface of the second inner lining plate 17 is provided with a fifth bulge and a sixth bulge which are opposite, and the axes of the fifth bulge and the sixth bulge are extended and then intersected to form an inverted V shape; the second inner lining plate 17 is connected with an inner baffle block 20;
a third outer stop block 15 and a fourth outer stop block which are oppositely arranged are both connected with the static cross beam 24, a seventh bulge is arranged on the third outer stop block 15, and an eighth bulge is arranged on the fourth outer stop block; in a specific implementation process, the bottom of the third outer stop block 15 is connected with a lower jaw plug plate 16;
the third base plate and the fourth base plate are oppositely arranged and are connected with the static cross beam 24, the axes of the third base plate and the fifth bulge and the seventh bulge are parallel, and the third base plate, the fifth bulge and the seventh bulge jointly form a third limiting space; the fourth backing plate is parallel to the axes of the sixth bulge and the eighth bulge, and the fourth backing plate, the sixth bulge and the eighth bulge form a fourth limiting space; in the preferred implementation process of the embodiment of the present invention, the third pad plate and the fourth pad plate are perpendicular to the second inner side liner plate 17, the axial cross sections of the third limiting space and the fourth limiting space are parallelogram, and the included angle between adjacent edges is a non-right angle;
the third clamp and the fourth clamp are oppositely arranged and are connected with the third driving unit, part of the third clamp is located in the third limiting space, part of the fourth clamp is located in the fourth limiting space, and the third driving unit drives the third clamp and the fourth clamp to move relatively in the third limiting space and the fourth limiting space to clamp objects.
In an embodiment of the present invention, as shown in fig. 5, the third clamp and the fourth clamp have the same structure, and both include:
the lower jaw sliding seat 14 is partially positioned in the third limiting space or the fourth limiting space, is connected with the third driving unit, and is driven by the third driving unit to perform reciprocating motion in the third limiting space or the fourth limiting space;
a second clamping block connected to the lower jaw slide 14.
In one embodiment of the present invention, as shown in fig. 7, the third driving unit includes:
the connecting plate 19 is positioned below the through hole on the static cross beam 24 and is parallel to the static cross beam 24, and a second through hole corresponding to the first through hole is arranged on the connecting plate;
one end of the guide rod 21 is connected with the connecting plate 19, and the other end of the guide rod is connected with the static cross beam 24 in a sliding manner and used for realizing guiding; in the specific implementation process, the fixed cross beam 24 is provided with a sliding sleeve, and each guide rod is in sliding fit with the corresponding sliding sleeve to realize vertical sliding;
a first lower jaw longitudinal link 18, both ends of which are respectively hinged to the connecting plate 19 and the lower jaw slide 14 in the third clamp, for example, hinged to the connecting plate 19 and the lower jaw slide 14 in the third clamp through a pin;
a second lower jaw longitudinal link, both ends of which are respectively hinged to the connecting plate 19 and the lower jaw slide 14 in the fourth clamp, for example, hinged to the connecting plate 19 and the lower jaw slide 14 in the fourth clamp through a pin;
and one end of the driver 13 is connected with the connecting plate 19, the other end of the driver is connected with the static cross beam 24, the connecting plate 19 is driven to drive the guide rod 21, the first lower jaw longitudinal connecting rod 18 and the second lower jaw longitudinal connecting rod to move, in the specific implementation process, the driver 13 can be an oil cylinder, a telescopic rod of the oil cylinder is connected with the connecting plate 19, and a cylinder body is connected with the static cross beam 24.
In summary, the working principle of the second clamping module in this embodiment is specifically as follows:
the connecting plate 19 is driven by the driver 13 in the third driving unit to move upwards along the vertical direction;
the connecting plate 19 drives the guide rod, the first lower jaw longitudinal connecting rod 18 and the second lower jaw longitudinal connecting rod to move upwards, so as to drive the lower jaw sliding seats 14 in the third clamp and the fourth clamp to slide upwards along the corresponding third base plate and fourth base plate, so as to drive the second clamping blocks in the third clamp and the fourth clamp to synchronously move upwards and relatively, so that the gap between the second clamping blocks in the third clamp and the fourth clamp is reduced, and the purpose of clamping the object to be tested 22 is achieved.
When a tensile test is required, two ends of an object to be tested 22 are respectively placed into a first clamping module and a second clamping module and clamped by a first clamping block 4 and a second clamping block which are opposite;
then, starting the first driving unit, and driving the movable beam 23 to drive the first clamping module to move upwards by the first driving unit, so as to stretch the object to be tested 22 until the tensile test is completed;
after the test is completed, the first clamping module and the second clamping module loosen the object to be tested 22, and the object to be tested 22 directly falls into the receiving hopper from the through hole in the static cross beam 24.
Example 2
Based on embodiment 1, in order to prevent the first outer stopper 7 and the second outer stopper from being displaced, the embodiment of the present invention is different from embodiment 1 in that: the bottom parts of the first outer stop block 7 and the second outer stop block are respectively provided with a first groove (not shown in the figure), and the position of the movable cross beam 23 corresponding to each first groove is provided with a second groove (not shown in the figure) communicated with the first grooves; the first outer stop dog 7 and the second outer stop dog are also provided with notches (not shown in the figure), flat keys (not shown in the figure) are arranged in each first groove and the corresponding second groove, the flat keys are partially positioned in the notches on the first outer stop dog 7 or the second outer stop dog, and when the flat keys need to be disassembled, the flat keys are directly knocked in the notches from bottom to top until the flat keys are separated.
In order to prevent the third outer stop block 15 and the fourth outer stop block from shifting, third grooves (not shown in the figure) are respectively arranged at the bottoms of the third outer stop block 15 and the fourth outer stop block, and fourth grooves (not shown in the figure) communicated with the third grooves are arranged at positions, corresponding to the third grooves, on the movable cross beam 23; the third outer stop block 15 and the fourth outer stop block are also provided with notches (not shown in the figure), flat keys (not shown in the figure) are arranged in each third groove and the corresponding fourth groove, the flat keys are partially positioned in the notches on the third outer stop block 15 or the fourth outer stop block, and when the flat keys are required to be disassembled, the flat keys can be directly knocked in the notches.
Example 3
Based on embodiment 1 or 2, in order to prevent the upper jaw sliding base 5 from being worn during long-term sliding, which results in that the later equipment cannot be used, the embodiment of the invention is different from embodiment 1 or 2 in that:
and a wear-resisting plate 6 is arranged between the upper jaw sliding seat 5 and the corresponding first cushion plate 11 or second cushion plate, and the wear-resisting plate 6 is in sliding contact with the upper jaw sliding seat 5. In the specific implementation, the wear-resistant plate 6 may be a copper plate.
A wear plate 6 is also arranged between the lower jaw sliding base 14 and the corresponding third pad or fourth pad, and the wear plate 6 is in sliding contact with the lower jaw sliding base 14. In the specific implementation, the wear-resistant plate 6 may be a copper plate.
Example 4
In accordance with any of embodiments 1-3, to prevent damage to the upper jaw slide 5, the first and second clamps further comprise: the first outer liner 9 and the second outer liner 10 are oppositely arranged and are respectively connected with the first bulge and the third bulge or are respectively connected with the second bulge and the fourth bulge. In the specific implementation process, the first outer lining plate 9 and the second outer lining plate 10 can be made of nylon lining, so that the wear resistance and the guiding can be realized. The first and second outer liners 9 and 10 are consumable parts and need to be replaced periodically, so that they are connected to the protrusions by screws, etc., thereby facilitating periodic replacement.
The third and fourth clamps further comprise: and a third outer lining plate and a fourth outer lining plate are oppositely arranged and are respectively connected with the fifth bulge and the seventh bulge or are respectively connected with the sixth bulge and the eighth bulge. In the concrete implementation process, nylon lining can be chooseed for use to third outside welt and fourth outside welt, not only can realize wear-resisting, can also realize the direction. The third outer liner plate and the fourth outer liner plate are consumable parts and need to be replaced regularly, so that the third outer liner plate and the fourth outer liner plate are connected through screws and the like, and regular replacement is facilitated.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. A jaw apparatus suitable for use in a tensile testing machine, comprising:
the upper jaw unit comprises a movable cross beam and a first clamping module, and the first clamping module is connected with the movable cross beam;
the lower jaw unit comprises a static cross beam and a second clamping module, the second clamping module is connected with the static cross beam, and the second clamping module is arranged opposite to the first clamping module; a first through hole is formed in the static cross beam and is positioned below the second clamping module;
the two ends of the first driving unit are respectively connected with the upper jaw unit and the lower jaw unit and drive the upper jaw unit to move relative to the lower jaw unit;
wherein the first clamping module comprises:
a second driving unit;
the pressure head is connected with the second driving unit and driven by the second driving unit to perform reciprocating motion;
the surface of the first inner lining plate is provided with a first bulge and a second bulge which are opposite, and the axes of the first bulge and the second bulge are extended and then intersected to form a V shape;
the first outer stop block and the second outer stop block are oppositely arranged and are connected with the movable cross beam, a third bulge is arranged on the first outer stop block, and a fourth bulge is arranged on the second outer stop block;
the first base plate and the second base plate are arranged oppositely and are connected with the movable cross beam, and the axes of the first base plate and the first bulge and the third bulge are parallel to each other and form a first limiting space together; the axes of the second base plate, the second bulge and the fourth bulge are parallel to each other, and a second limiting space is formed by the second base plate, the second bulge and the fourth bulge;
the first clamp and the second clamp are oppositely arranged and are connected with the pressure head, the part of the first clamp is positioned in the first limiting space, the part of the second clamp is positioned in the second limiting space, and the pressure head drives the first clamp and the second clamp to move relatively in the first limiting space and the second limiting space to clamp a finished object.
2. The jaw apparatus of claim 1, wherein the first and second clamps are identical in structure and each comprise:
the upper jaw sliding seat is partially positioned in the first limiting space or the second limiting space, is clamped with the end part of the pressure head, and is driven by the pressure head to perform reciprocating motion in the first limiting space or the second limiting space;
and the first clamping block is connected with the upper jaw sliding seat and is in contact with the pressure head.
3. A jaw apparatus suitable for use in a tensile testing machine according to claim 2, wherein: and a wear-resisting plate is arranged between the upper jaw sliding seat and the corresponding first base plate or second base plate, and the wear-resisting plate is in sliding contact with the upper jaw sliding seat.
4. A jaw apparatus suitable for use in a tensile testing machine according to claim 2, wherein: the upper jaw sliding seat is provided with a groove, and the end part of the pressure head is clamped in the groove.
5. The jaw apparatus suitable for use in a tensile testing machine of claim 4, wherein: the groove is provided with a limiting plate, and the limiting plate covers the groove and is used for limiting the pressure head.
6. A jaw apparatus suitable for use in a tensile testing machine according to claim 2, wherein: the first and second clamps further comprise:
the first outer lining plate and the second outer lining plate are oppositely arranged and are respectively connected with the first bulge and the third bulge or are respectively connected with the second bulge and the fourth bulge.
7. The jaw apparatus of claim 1, wherein the second clamping module comprises:
a third driving unit;
the surface of the second inner lining plate is provided with a fifth bulge and a sixth bulge which are opposite, and the axes of the fifth bulge and the sixth bulge are extended and then intersected to form an inverted V shape;
the third outer stop block and the fourth outer stop block are oppositely arranged and are connected with the static cross beam, a seventh bulge is arranged on the third outer stop block, and an eighth bulge is arranged on the fourth outer stop block;
the third base plate and the fourth base plate are oppositely arranged and are connected with the static cross beam, the axes of the third base plate and the fifth bulge and the seventh bulge are parallel, and the third base plate, the fifth bulge and the seventh bulge jointly form a third limiting space; the fourth backing plate is parallel to the axes of the sixth bulge and the eighth bulge, and the fourth backing plate, the sixth bulge and the eighth bulge form a fourth limiting space;
the third clamp and the fourth clamp are oppositely arranged and are connected with the third driving unit, part of the third clamp is located in the third limiting space, part of the fourth clamp is located in the fourth limiting space, and the third driving unit drives the third clamp and the fourth clamp to move relatively in the third limiting space and the fourth limiting space to clamp objects.
8. The jaw apparatus of claim 7, wherein: the third anchor clamps are the same with fourth anchor clamps's structure, all include:
the lower jaw sliding seat is partially positioned in the third limiting space or the fourth limiting space, is connected with the third driving unit, and is driven by the third driving unit to perform reciprocating motion in the third limiting space or the fourth limiting space;
and the second clamping block is connected with the lower jaw sliding seat.
9. The jaw apparatus of claim 8, wherein the third drive unit comprises:
the connecting plate is positioned below the first through hole in the static cross beam and is parallel to the static cross beam, and a second through hole corresponding to the first through hole is formed in the connecting plate;
one end of the guide rod is connected with the connecting plate, and the other end of the guide rod is connected with the static cross beam in a sliding manner;
the two ends of the first lower jaw longitudinal connecting rod are respectively hinged with the connecting plate and a lower jaw sliding seat in the third clamp;
the two ends of the second lower jaw longitudinal connecting rod are respectively hinged with the connecting plate and a lower jaw sliding seat in the fourth clamp;
and one end of the driver is connected with the connecting plate, the other end of the driver is connected with the static cross beam, and the driver drives the connecting plate to drive the guide rod, the first lower jaw longitudinal connecting rod and the second lower jaw longitudinal connecting rod to move.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110046607.3A CN112362465A (en) | 2021-01-14 | 2021-01-14 | Jaw device suitable for tensile testing machine |
| CN202120679502.7U CN214622025U (en) | 2021-01-14 | 2021-04-02 | Jaw device suitable for tensile testing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110046607.3A CN112362465A (en) | 2021-01-14 | 2021-01-14 | Jaw device suitable for tensile testing machine |
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| Publication Number | Publication Date |
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| CN112362465A true CN112362465A (en) | 2021-02-12 |
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ID=74535009
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110046607.3A Withdrawn CN112362465A (en) | 2021-01-14 | 2021-01-14 | Jaw device suitable for tensile testing machine |
| CN202120679502.7U Active CN214622025U (en) | 2021-01-14 | 2021-04-02 | Jaw device suitable for tensile testing machine |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120679502.7U Active CN214622025U (en) | 2021-01-14 | 2021-04-02 | Jaw device suitable for tensile testing machine |
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| Country | Link |
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| CN (2) | CN112362465A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116660037A (en) * | 2023-08-02 | 2023-08-29 | 迤峰拖链技术(江苏)有限公司 | Tension tester for drag chain detection |
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| CN116660037B (en) * | 2023-08-02 | 2023-10-27 | 迤峰拖链技术(江苏)有限公司 | Tension tester for drag chain detection |
Also Published As
| Publication number | Publication date |
|---|---|
| CN214622025U (en) | 2021-11-05 |
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Application publication date: 20210212 |
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