Automatic jaw adjusting structure and testing machine

Abstract

The utility model belongs to the field of testing equipment, and discloses an automatic jaw adjusting structure and a testing machine, comprising a jaw used for clamping a sample; the jaw supporting structure is used for supporting automatic adjustment of the jaw, the jaw supporting structure is at least provided with a jaw pressing block located above the jaw and a sleeve base matched with the jaw pressing block in a locking mode, and the jaw can relatively slide in the jaw supporting structure; and the jaw driving structure is used for driving the jaw to relatively slide in the jaw supporting structure. Through cooperation of the jaw, the jaw pin and the ejector rod, automatic opening and closing of the jaw are achieved, the damage risk of manual operation to the jaw is reduced, the service life of the jaw is prolonged, and the accuracy and reliability of test data are ensured; the sample can be loaded and taken more conveniently and quickly in a high-temperature environment, so that the test efficiency is improved, the operation risk is reduced, and the test safety is improved; the device is simple in structure, convenient to operate, capable of meeting test requirements in a high-temperature environment and wide in application range.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and in particular to an automatic jaw adjustment structure and testing machine. Background Technology

[0002] In mechanical experiments, the high-temperature push bar test is a common testing method, mainly used to evaluate the mechanical properties of materials under high-temperature environments, especially tensile tests at around 1000℃. Currently, most high-temperature push bar testing equipment on the market is designed for bar stock, while testing plate samples faces many challenges.

[0003] One of the main challenges lies in the process of removing the specimen after the test. Due to changes in material properties at high temperatures, the jaws of the high-temperature plate clamps often stick to the specimen after the test, preventing them from opening automatically. To remove the specimen, operators usually need to manually pry open the jaws to separate them. However, this operation is not only time-consuming and labor-intensive, but also prone to causing mechanical damage to the jaws, thus affecting the accuracy and reliability of subsequent tests.

[0004] Damage to the jaws can lead to deviations in test data and even affect the long-term performance of the equipment. Therefore, how to effectively solve the problem of jaw adhesion to the sample in high-temperature plate testing and avoid damage to the jaws during disassembly has become an urgent problem to be solved in the current technical field.

[0005] To solve this problem, there is an urgent need for a structural device that can automatically open the jaws of the jaws. Utility Model Content

[0006] The purpose of this invention is to provide an automatic jaw adjustment structure and testing machine. By introducing an automatic opening mechanism, not only can manual intervention be reduced, but damage to the jaws during disassembly can also be effectively avoided, thereby improving the efficiency of the test and the accuracy of the data.

[0007] To achieve this objective, the present invention adopts the following technical solution:

[0008] An automatic jaw adjustment structure includes:

[0009] Clamping jaws to hold the sample;

[0010] A jaw support structure is provided for supporting the automatic adjustment of the jaws. The jaw support structure has at least a jaw pressing block located above the jaws and a sleeve that locks into the jaw pressing block. The jaws can slide relative to each other within the jaw support structure.

[0011] A jaw driving structure is used to drive the jaws to slide relative to each other within a jaw support structure. The jaw driving structure has at least a push rod and a driver. The push rod is located inside the sleeve, with one end connected to the jaws and the other end connected to the driver. The driver drives the push rod to move, thereby causing the jaws to slide relative to each other within the jaw support structure.

[0012] Preferably, the jaws have two symmetrically arranged and oppositely positioned clamping portions for clamping the sample; each clamping portion has a first guide surface that surrounds each other, two side portions and a clamping surface opposite to the first guide surface, as well as a top surface and a bottom surface located at both ends of the enclosure.

[0013] Preferably, the first guide mask has an inclined surface and a straight plane, and the inclined surface and the straight plane are connected.

[0014] Preferably, each of the side surfaces is provided with an inclined groove, and a sliding surface perpendicular to the side surface is provided at the junction of the inclined groove and the side surface. The sliding surface has a first sliding surface and a second sliding surface that are connected to each other. The first sliding surface is parallel to the inclined surface, and the second sliding surface is parallel to the straight plane.

[0015] Preferably, the width of the groove on one side of the top surface is smaller than the width of the groove on the side connecting to the second sliding surface.

[0016] Preferably, the jaw pressing block has at least a through-hole jaw groove, the jaws can slide relative to each other in the jaw groove, the jaw groove has a second guide surface that is opposite to each other, the second guide surface cooperates with the inclined surface of the first guide surface, and the inclined surface slides relative to each other along the second guide surface.

[0017] Preferably, the length of the second guide surface is greater than the length of the inclined surface.

[0018] Preferably, a through pin hole is provided on the side of the jaw clamping block that is perpendicular to the second guide surface. A jaw pin is provided on the pin hole. One end of the jaw pin passes through the pin hole and abuts against the inclined groove. The circumferential surface of the jaw pin contacts the sliding surface of the inclined groove, so that the two clamping parts of the jaw separate and close based on the contact and sliding between the jaw pin and the inclined groove.

[0019] Preferably, each of the clamping parts has a bottom insert and a groove at one end of the push rod. The insert and the groove are matched and connected, thereby enabling the push rod to drive the jaws to move.

[0020] A testing machine having at least a worktable on which the aforementioned automatic jaw adjustment structure is mounted, the driver being connected to the push rod to drive the jaws to slide relative to each other to achieve automatic opening and closing.

[0021] The automatic jaw adjustment structure and testing machine provided in this solution have the following beneficial effects:

[0022] (1) The automatic opening and closing of the jaws is achieved through the cooperation of the jaws, jaw pins and push rod, avoiding the traditional method of manually knocking open the jaws, reducing the risk of damage to the jaws by human operation, extending the service life of the jaws, and ensuring the accuracy and reliability of the test data.

[0023] (2) Under high temperature conditions, the jaws can open automatically, making it more convenient and faster to load and unload samples, improving test efficiency, reducing operational risks, and improving test safety.

[0024] (3) The entire device has a simple structure, is easy to operate, and can withstand the test requirements in a high-temperature environment, making it widely applicable. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the automatic jaw adjustment structure provided by this utility model;

[0026] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure along line E;

[0027] Figure 3 yes Figure 1 A structural diagram excluding the end caps and cylinder body;

[0028] Figure 4 yes Figure 3 A schematic diagram of the split structure;

[0029] Figures 5-6 This is a schematic diagram showing the position and structure of the jaws and jaw pins;

[0030] Figure 7 Schematic diagram of the jaw clamping block structure;

[0031] Figures 8-9 This is a schematic diagram of the jaw movement.

[0032] In the picture:

[0033] 1. Automatic jaw adjustment structure;

[0034] 10. Jaws; 100. Clamping part; 1000. First guide surface; 10001. Inclined surface; 10002. Straight plane; 1001. Side surface; 10010. Inclined groove; 10011. First sliding surface; 10012. Second sliding surface; 1002. Clamping surface; 1003. Top surface; 1004. Bottom; 10040. Insert;

[0035] 11. Jaw support structure; 110. Jaw clamping block; 1100. Jaw groove; 1101. Second guide surface; 1102. Pin hole; 111. Sleeve; 112. Jaw pin;

[0036] 12. Jaw drive structure; 120. Push rod; 1200. Groove; 121. Cylinder block; 122. End cap. Detailed Implementation

[0037] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0038] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0039] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0040] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0041] like Figure 1-9 As shown, this embodiment provides an automatic jaw adjustment structure 1, which is installed on a testing machine. More specifically, the automatic jaw adjustment structure 1 is installed on the worktable of the testing machine. In this embodiment, the testing machine and its worktable can adopt existing structures. Since other structures of the testing machine and the worktable are not improvements to this solution, they will not be described in detail here.

[0042] More specifically, the automatic jaw adjustment structure 1 includes:

[0043] Jaw 10, for clamping the sample;

[0044] The jaw support structure 11 is used to support the automatic adjustment of the jaws 10. The jaw support structure 11 has at least a jaw pressing block 110 located above the jaws 10 and a sleeve 111 that is locked with the jaw pressing block 110. The jaws 10 can slide relative to each other within the jaw support structure 11.

[0045] The jaw drive structure 12 is used to drive the jaws 10 to slide relative to each other within the jaw support structure 11. The jaw drive structure 12 has at least a push rod 120 and a driver. The driver is mounted on the worktable and is usually a power structure such as a hydraulic cylinder or a servo motor. No specific limitation is made here. In this embodiment, a hydraulic cylinder structure is used as the driver structure. The hydraulic cylinder has a cylinder body 121, an end cap 122, and a piston rod. The end cap 122 is connected to the cylinder body 121 by a nut to achieve hydraulic cylinder sealing. The piston rod and push rod 120 can be an integral structure or a separate structure. In this embodiment, the piston rod... The piston rod and push rod 120 are an integral structure. In the following description, push rod 120 is used as the reference. In other embodiments, the piston rod and push rod 120 can also be a separate structure, as long as they can be driven synchronously. One end of push rod 120 extends into the cylinder body 121, and the other end extends outward through the end cover 122. A sleeve 111 is provided on the outside of push rod 120, and the bottom 1004 of sleeve 111 is installed above the end cover 122. One end of push rod 120 extending out of end cover 122 is connected to jaw 10. The push rod 120 is driven to move by the driver, thereby causing jaw 10 to slide relative to each other in jaw support structure 11.

[0046] In more detail, the jaw 10 has two symmetrically arranged and opposing clamping portions 100 for clamping the sample; each clamping portion 100 has a first guide surface 1000 that surrounds each other, two side portions 1001, and a clamping surface 1002 opposite to the first guide surface 1000, as well as a top surface 1003 and a bottom surface 1004 located at both ends of the enclosure; wherein, the first guide surface 1000 has an inclined surface 10001 and a straight plane 10002, and the inclined surface 10001 and the straight plane 10002 are connected; each side portion 1001 is provided with a groove 10010, and a sliding surface perpendicular to the side portion 1001 is provided at the junction of the groove 10010 and the side portion 1001. The sliding surface has a first sliding surface 10011 and a second sliding surface 10012 that are connected to each other. The first sliding surface 10011 is parallel to the inclined surface 10001, and the second sliding surface 10012 is parallel to the straight plane 10002.

[0047] It should be noted that the width of the groove 10010 on the side of the top surface 1003 is smaller than the width of the groove on the side of the connecting second sliding surface 10012.

[0048] The jaw clamping block 110 has at least a through jaw groove 1100, and the jaws 10 can slide relative to each other in the jaw groove 1100. The jaw groove 1100 has a second guide surface 1101 that is opposite to each other. The second guide surface 1101 cooperates with the inclined surface 10001 of the first guide surface 1000, and the inclined surface 10001 slides relative to each other along the second guide surface 1101. The length of the second guide surface 1101 is greater than the length of the inclined surface 10001.

[0049] It should be noted that the area of ​​the jaw groove 1100 is greater than or equal to the sum of the areas of the top surfaces 1003 of the two clamping parts 100 of the jaw 10.

[0050] A through pin hole 1102 is provided on the side of the jaw clamping block 110 perpendicular to the second guide surface 1101. A jaw pin 112 is provided on the pin hole 1102. One end of the jaw pin 112 passes through the pin hole 1102 and abuts against the inclined groove 10010. The circumferential surface of the jaw pin 112 contacts the sliding surface of the inclined groove 10010, so that the two clamping parts 100 of the jaw 10 separate and close based on the contact and sliding between the jaw pin 112 and the inclined groove 10010.

[0051] Each clamping part 100 has a bottom 1004 with an insert 10040 and a groove 1200 at one end of the push rod 120. The insert 10040 and the groove 1200 are matched and connected, so that the push rod 120 drives the jaw 10 to move. In this embodiment, the insert 10040 and the groove 1200 are both T-shaped. In actual use, other structures can also be used, as long as the push rod 120 and the jaw 10 can be detached and installed. The specific shape is not limited.

[0052] Based on the above structural description, the method of using the automatic jaw adjustment structure 1 is as follows:

[0053] (1) When assembling jaw 10, care should be taken to avoid interference and damage between the inclined groove 10010 at the top of jaw 10 and jaw pin 112.

[0054] (2) After assembly, the top rod 120 is raised and the jaws 10 slide upward along the second guide surface 1101 of the jaw groove 1100. At this time, the jaw pin 112 moves from the first sliding surface 10011 of the jaw groove 10010 to the second sliding surface 10012, thereby driving the jaws 10 to gradually close.

[0055] (3) Then the cylinder 121 is depressurized, and the push rod 120 drives the jaws 10 to descend. When descending, the inclined groove 10010 of the jaws 10 contacts the pin of the jaws 10. The relative position of the jaw pin 112 moves from the second sliding surface 10012 to the first sliding surface 10011. Since the groove width of the inclined groove 10010 on the side of the top surface 1003 is smaller than the groove width on the side of the second sliding surface 10012, the jaws 10 separate to both sides after being resisted by the jaw pin 112.

[0056] (4) During the test, due to the high temperature test environment, when the jaws 10 descend and separate, the sample will separate from the adhesive part of the jaws 10, making it easier to load and unload the sample, and the damage caused by human error to the jaws 10 will be less, thus increasing the service life of the jaws 10.

[0057] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A jaw automatic adjustment structure, characterized in that, include: Jaws, used to clamp the sample; A jaw support structure is provided for supporting the automatic adjustment of the jaws. The jaw support structure has at least a jaw pressing block located above the jaws and a sleeve that locks into the jaw pressing block. The jaws can slide relative to each other within the jaw support structure. A jaw driving structure is used to drive the jaws to slide relative to each other within a jaw support structure. The jaw driving structure has at least a push rod and a driver. The push rod is located inside the sleeve, with one end connected to the jaws and the other end connected to the driver. The driver drives the push rod to move, thereby causing the jaws to slide relative to each other within the jaw support structure.

2. The automatic jaw adjustment structure as described in claim 1, characterized in that, The jaws have two symmetrically arranged clamping portions for clamping the sample; each clamping portion has a first guide surface that surrounds each other, two side portions and a clamping surface opposite to the first guide surface, as well as a top surface and a bottom surface located at both ends of the enclosure.

3. The automatic jaw adjustment structure as described in claim 2, characterized in that, The first guide mask has an inclined surface and a straight plane, and the inclined surface and the straight plane are connected.

4. The automatic jaw adjustment structure as described in claim 3, characterized in that, Each of the side surfaces is provided with an inclined groove, and a sliding surface perpendicular to the side surface is provided at the junction of the inclined groove and the side surface. The sliding surface has a first sliding surface and a second sliding surface that are connected to each other. The first sliding surface is parallel to the inclined surface, and the second sliding surface is parallel to the straight plane.

5. The automatic jaw adjustment structure as described in claim 4, characterized in that, The width of the groove on one side of the top surface is smaller than the width of the groove on the side connecting to the second sliding surface.

6. The automatic jaw adjustment structure as described in claim 4, characterized in that, The jaw clamping block has at least one through-jaw groove, the jaws can slide relative to each other in the jaw groove, the jaw groove has a second guide surface that is opposite to each other, the second guide surface cooperates with the inclined surface of the first guide surface, and the inclined surface slides relative to each other along the second guide surface.

7. The automatic jaw adjustment structure as described in claim 6, characterized in that, The length of the second guide surface is greater than the length of the inclined surface.

8. The automatic jaw adjustment structure as described in claim 6, characterized in that, A through pin hole is provided on the side of the jaw clamping block that is perpendicular to the second guide surface. A jaw pin is provided on the pin hole. One end of the jaw pin passes through the pin hole and abuts against the inclined groove. The circumferential surface of the jaw pin contacts the sliding surface of the inclined groove, so that the two clamping parts of the jaw separate and close based on the contact and sliding between the jaw pin and the inclined groove.

9. The automatic jaw adjustment structure as described in claim 2, characterized in that, Each clamping part has a bottom insert, and one end of the push rod has a groove. The insert is matched and connected with the groove, thereby enabling the push rod to drive the jaws to move.

10. A testing machine, comprising at least a worktable, characterized in that, The workbench is equipped with the driver of the automatic jaw adjustment structure according to any one of claims 1-9, the driver being connected to the top rod, thereby driving the jaws to slide relative to each other to achieve automatic opening and closing.

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