Sealant tensile test device

Abstract

The utility model discloses a sealant tensile test device. The sealant tensile test device comprises a base; the bracket is arranged on the base; the cross rod is rotatably arranged on the support, the cross rod is provided with a first section located on one side of the rotation center line of the cross rod and a second section located on the other side of the rotation center line of the cross rod, the length of the first section is larger than that of the second section, and the end, away from the second section, of the first section is used for hanging a balance weight part; the sample clamp comprises an upper clamp and a lower clamp, and the upper clamp and the lower clamp are used for being matched with each other to clamp a sample; the tension meter is connected between the lower clamp and the base, the upper clamp is connected to the end, away from the first section, of the second section, or the tension meter is connected between the end, away from the first section, of the second section and the upper clamp, and the lower clamp is connected to the base. Compared with a traditional tensile testing machine, the sealant tensile testing device is simple in structure, convenient to carry and suitable for being used in a simple test room of a construction site, a construction site and other scenes needing to be used on site.

Description

Technical Field

[0001] This application relates to the field of sealant tensile testing technology, and in particular to a sealant tensile testing device. Background Technology

[0002] In related technologies, silicone structural sealants are not only widely used in the building curtain wall industry, but also extensively applied as nail-free adhesives for fixing brackets of roof photovoltaic modules. Before being distributed to the market, silicone structural sealants typically undergo tensile testing. Specifically, I-beam specimens are prepared in the production plant laboratory or external quality inspection center according to relevant standards and specifications, and then subjected to standardized testing using specialized specimen clamps, tensile testing machines, and testing software.

[0003] However, traditional tensile testing machines are generally suitable for indoor environments, are not portable, and are mostly used for rapid tensile failure tests. When testing whether the pull-out force of silicone structural sealant reaches the expected set value in simple laboratories and construction sites, a long testing time is usually required, such as conducting tensile tests on samples daily or monthly. Currently, there is a lack of simple and portable sealant tensile testing devices for this purpose. Utility Model Content

[0004] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a sealant tensile testing device, which has a simple structure and is easy to carry, suitable for simple laboratories at construction sites and other scenarios requiring on-site use.

[0005] A sealant tensile testing apparatus according to an embodiment of this application includes: a base; a bracket disposed on the base; a crossbar rotatably disposed on the bracket, the crossbar having a first segment located on one side of its own rotation center line and a second segment located on the other side of its own rotation center line, the length of the first segment being greater than the length of the second segment, and the end of the first segment away from the second segment being used to suspend a counterweight; a sample clamp including an upper clamp and a lower clamp, the upper clamp and the lower clamp being used to cooperate with each other to clamp a sample; a tensile gauge connected between the lower clamp and the base, the upper clamp being connected to the end of the second segment away from the first segment, or the tensile gauge being connected between the end of the second segment away from the first segment and the upper clamp, and the lower clamp being connected to the base.

[0006] The sealant tensile testing device according to the embodiments of this application has at least the following beneficial effects: In use, the sample is clamped by a sample holder, and a counterweight is suspended at the end of the first section furthest from the second section. Through adjustment, the crossbar is brought to a horizontal position. At this point, the direction of the tensile force on the sample is parallel to the direction of gravity. Based on the lever principle, the magnitude of the tensile force on the sample can be calculated using the length of the first section, the length of the second section, and the weight of the suspended counterweight, thus providing a preset tensile force to the sample according to the test requirements. Since the length of the first section is greater than the length of the second section, only a smaller counterweight is needed to meet the tensile test requirements. Compared to traditional tensile testing machines, the sealant tensile testing device of this application has a simple structure and is easy to carry, making it suitable for simple laboratories at construction sites and other scenarios requiring on-site use.

[0007] According to some embodiments of this application, a lifting adjustment structure is provided between the bracket and the base, the lifting adjustment structure being used to drive the bracket to rise or fall relative to the base.

[0008] According to some embodiments of this application, the bracket includes two vertically arranged support rods, a crossbar passes between the two support rods, and a pivot is provided on the crossbar for rotatable connection with the support rods.

[0009] According to some embodiments of this application, the lifting adjustment structure includes a lead screw assembly, a driving member, and a lifting guide structure. The lead screw assembly includes a screw vertically disposed on the base and capable of rotating relative to the base, and a nut disposed on the screw. A connecting seat is disposed on the nut. A support rod is vertically disposed on the connecting seat. The driving member is used to drive the screw to rotate. The lifting guide structure is used to restrict the rotation of the connecting seat relative to the base.

[0010] According to some embodiments of this application, the driving component is a handwheel, and a transmission structure is provided between the handwheel and the screw.

[0011] According to some embodiments of this application, the lifting guide structure includes a guide post vertically disposed on the base, and the connecting seat is provided with a through hole that cooperates with the guide post for guidance, and the guide post passes through the through hole.

[0012] According to some embodiments of this application, the bracket further includes a fixing member, and the upper parts of both support rods are connected to the fixing member.

[0013] According to some embodiments of this application, a measuring device is provided on the crossbar, and the measuring device is used to provide feedback on whether the crossbar is in a horizontal position.

[0014] According to some embodiments of this application, the measuring device is a bubble level.

[0015] According to some embodiments of this application, the sealant tensile testing apparatus further includes an extension rod that can be detachably connected to the end of the first segment away from the second segment.

[0016] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1 This is a schematic diagram of the structure of a sealant tensile testing device according to an embodiment of this application;

[0019] Figure 2 This is a schematic diagram of the sealant tensile testing device according to an embodiment of this application from another perspective;

[0020] Figure 3 yes Figure 2 AA section view of a local structure.

[0021] Figure label:

[0022] Counterweight a, sample b, first connector c, second connector d;

[0023] Base 100;

[0024] Bracket 200, support rod 210, fastener 220;

[0025] Crossbar 300, first section 310, second section 320, pivot 330;

[0026] Upper clamp 410, lower clamp 420;

[0027] 500 dynamometer;

[0028] Screw 610, nut 620, connecting seat 630, handwheel 640, reducer 650, guide column 660;

[0029] Bubble level 700. Detailed Implementation

[0030] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0031] In the description of this application, it should be understood that if directional descriptions are involved, such as up, down, front, back, left, right, etc., indicating the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings, it is only for the convenience of describing this application and simplifying the description, and does 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, and therefore should not be construed as a limitation of this application.

[0032] In the description of this application, if words such as several, greater than, less than, exceeding, above, below, or within appear, "several" means one or more, "multiple" means two or more, "greater than," "less than," "exceeding," etc. are understood to exclude the number itself, and "above," "below," "within," etc. are understood to include the number itself.

[0033] In the description of this application, the use of terms such as "first" and "second" is for the purpose of distinguishing technical features only, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0034] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0035] Reference Figures 1 to 3 The sealant tensile testing apparatus according to an embodiment of this application includes a base 100, a bracket 200, a crossbar 300, a sample clamp, and a tension gauge 500.

[0036] Specifically, the bracket 200 is mounted on the base 100, and the crossbar 300 is rotatably mounted on the bracket 200. The crossbar 300 has a first segment 310 located on one side of its own rotation center line and a second segment 320 located on the other side of its own rotation center line. The length of the first segment 310 is greater than the length of the second segment 320. The end of the first segment 310 away from the second segment 320 is used to suspend the counterweight a. The sample clamp includes an upper clamp 410 and a lower clamp 420. In use, the upper clamp 410 is located above the lower clamp 420. The upper clamp 410 and the lower clamp 420 are used to cooperate with each other to clamp the sample b. The tension gauge 500 is connected between the lower clamp 420 and the base 100, and the upper clamp 410 is connected to the end of the second segment 320 away from the first segment 310.

[0037] In use, sample b is clamped using a sample fixture. Simultaneously, a counterweight a is suspended at the end of the first segment 310 furthest from the second segment 320. Through adjustment, the crossbar 300 is brought to a horizontal position (i.e., the axis of the crossbar 300 is parallel to the horizontal direction). At this point, the tensile force on sample b is parallel to the direction of gravity. Based on the lever principle, the magnitude of the tensile force on sample b can be calculated using the length of the first segment 310, the length of the second segment 320, and the weight of the suspended counterweight a. This allows for the provision of a preset tensile force to sample b according to test requirements. Since the length of the first segment 310 is greater than the length of the second segment 320, only a smaller counterweight a is needed for the tensile test. Compared to traditional tensile testing machines, the sealant tensile testing device of this embodiment has a simple structure and is easy to carry, making it suitable for simple laboratories at construction sites and other scenarios requiring on-site use.

[0038] Specifically, when the crossbar 300 is in a horizontal position, the weight of the suspended counterweight a is m, the length of the first segment 310 is L1, the length of the second segment 320 is L2, the tension force on the sample b is F, and the gravity force provided by the counterweight a acting on the first segment 310 is G, where G = m·g, g is the acceleration due to gravity, then F·L2 = G·L1, and the magnitude of F can be calculated from this.

[0039] Reference Figure 1 and Figure 2 In some embodiments, the force gauge 500 and the lower clamp 420 are indirectly connected. Specifically, the force gauge 500 and the lower clamp 420 are connected by a first connector c with a hook.

[0040] It should be noted that in some other embodiments, the tension gauge 500 and the lower clamp 420 can also be directly connected, for example, by fasteners such as screws and pins.

[0041] Reference Figure 1 and Figure 2 In some embodiments, the upper clamp 410 and the second segment 320 are indirectly connected. Specifically, the upper clamp 410 and the second segment 320 are connected by a second connector d with a hook.

[0042] It should be noted that in some other embodiments, the upper clamp 410 and the second segment 320 can also be directly connected, for example, by fasteners such as screws and pins.

[0043] It should be noted that in some other embodiments, the tension gauge 500 can also be connected between the end of the second segment 320 away from the first segment 310 and the upper clamp 410. In this case, the lower clamp 420 is connected to the base 100.

[0044] It should be noted that the connection method between the above-mentioned components is not an improvement of this application. In implementation, it can be flexibly adjusted according to the structural type of the tensile gauge 500 and the structural type of the sample clamp.

[0045] In some embodiments, a lifting adjustment structure is provided between the support 200 and the base 100, which is used to drive the support 200 to rise or fall relative to the base 100. During the tensile test, the specimen gradually deforms, i.e., it is stretched, causing the crossbar 300 to deflect relative to the horizontal position. At this time, the direction of the tensile force on the specimen b is no longer parallel to the direction of gravity, i.e., the magnitude of the tensile force on the specimen b is no longer the preset value. When the specimen b is stretched, the lifting adjustment structure can be used to drive the support 200 to rise relative to the base 100, so that the crossbar 300 returns to the horizontal position, thereby improving the accuracy of the test results.

[0046] Reference Figures 1 to 3 In some embodiments, the bracket 200 includes two vertically arranged support rods 210, and a crossbar 300 passes between the two support rods 210. The crossbar 300 is provided with a rotating shaft 330 that is rotatably connected to the support rods 210. Its structure is simple and easy to implement.

[0047] Reference Figures 1 to 3 In some embodiments, the lifting adjustment structure includes a lead screw assembly, a drive member, and a lifting guide structure. The lead screw assembly includes a screw 610 vertically disposed on the base 100 and capable of rotating relative to the base 100, and a nut 620 disposed on the screw 610. A connecting seat 630 is disposed on the nut 620. A support rod 210 is vertically disposed on the connecting seat 630. The drive member is used to drive the screw 610 to rotate. The lifting guide structure is used to restrict the rotation of the connecting seat 630 relative to the base 100. Its structure is simple and easy to implement.

[0048] Reference Figures 1 to 3 In some embodiments, the driving component is a handwheel 640, and a transmission structure is provided between the handwheel 640 and the screw 610. When performing a tensile test, the operator can manually rotate the handwheel 640 to drive the bracket 200 to rise and fall relative to the base 100. Compared with the case of using a drive motor, this helps to reduce the weight of the entire device, making it easier to carry, and it is not limited by power conditions.

[0049] Specifically, the transmission structure is a reducer 650, which ensures that the rotational speed of the screw 610 is less than that of the handwheel 640. When the operator turns the handwheel 640, the rotational speed of the screw 610 will not be too fast, meaning the lifting speed of the nut 620 will not be too fast, thus improving the adjustment accuracy of the lifting and adjusting structure. The reducer 650 is a worm gear reducer, which has a self-locking function and will not reverse due to force applied to the output end.

[0050] Reference Figures 1 to 3 In some embodiments, the lifting guide structure includes a guide post 660 vertically disposed on the base 100, and a guide through hole provided on the connecting seat 630 to guide the guide post 660. The guide post 660 passes through the guide through hole, and its structure is simple and easy to implement.

[0051] It should be noted that in some other embodiments, the lifting adjustment structure includes a sleeve and a set screw. Specifically, the sleeve is vertically arranged on the base 100, the support rod 210 is inserted into the sleeve, and a threaded through hole is provided on the side wall of the sleeve. The set screw is threadedly connected to the threaded through hole and abuts against the support rod 210 to limit the lifting of the support rod 210 relative to the sleeve. When it is necessary to adjust the position of the support rod 210, the set screw can be loosened. After the adjustment is completed, the set screw can be tightened again.

[0052] Reference Figures 1 to 3 In some embodiments, the bracket 200 further includes a fixing member 220, to which the upper parts of the two support rods 210 are connected, thereby improving the stability of the two support rods 210.

[0053] Specifically, the fastener 220 is a block structure, and both support rods 210 are inserted through the fastener 220. Of course, the fastener 220 can also be a rod structure, with both ends of the fastener 220 connected to the two support rods 210 in a corresponding manner; this is not limited here.

[0054] In some embodiments, a measuring device is provided on the crossbar 300. The measuring device is used to provide feedback on whether the crossbar 300 is in a horizontal position, so that the operator can intuitively understand whether the crossbar 300 is in a horizontal position during the tensile test. At the same time, it can assist the operator in readjusting the crossbar 300 to a horizontal position after it has deflected.

[0055] Reference Figure 1 and Figure 2 In some of these embodiments, the measuring device is a bubble level 700, which is simple in structure and easy to observe.

[0056] It should be noted that in some other embodiments, the measuring device can also be a laser emitter. In this case, a target position needs to be set on the bracket 200. When the crossbar 300 is in a horizontal position, the laser beam emitted by the laser emitter can hit the target position. When the crossbar 300 deflects relative to the horizontal position, the laser beam emitted by the laser emitter will leave the target position.

[0057] In some embodiments, the sealant tensile testing apparatus also includes an extension rod that can be detachably connected to the end of the first segment 310 away from the second segment 320. When the tensile force required to be applied to the specimen b for the tensile test is large, the extension rod can be installed and the counterweight a can be suspended at the end of the extension rod away from the first segment 310. In this case, it is not necessary to prepare a counterweight a with a larger weight to meet the requirements of the tensile test.

[0058] In some embodiments, the extension rod is connected to the first segment 310 via a sleeve with internal threads. Specifically, one end of the sleeve is threaded to the end of the first segment 310 away from the second segment 320, and one end of the extension rod is threaded to the other end of the sleeve.

[0059] It should be noted that in some other embodiments, one end of the extension rod and one end of the first segment 310 away from the second segment 320 are provided with a threaded connection hole, and the other end is provided with a threaded connection part that mates with the threaded connection hole.

[0060] In the description of this specification, the use of terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," and "some examples" indicates that the specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0061] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A sealant tensile testing apparatus, characterized in that, include: Base; A bracket, which is disposed on the base; A crossbar is rotatably mounted on the bracket. The crossbar has a first segment located on one side of its own rotation center line and a second segment located on the other side of its own rotation center line. The length of the first segment is greater than the length of the second segment. The end of the first segment away from the second segment is used to suspend a counterweight. A sample clamp, comprising an upper clamp and a lower clamp, wherein the upper clamp and the lower clamp are used to cooperate with each other to clamp a sample; A tension gauge is connected between the lower clamp and the base, and the upper clamp is connected to the end of the second segment away from the first segment; or, the tension gauge is connected between the end of the second segment away from the first segment and the upper clamp, and the lower clamp is connected to the base.

2. The sealant tensile testing apparatus as described in claim 1, characterized in that, A lifting adjustment structure is provided between the bracket and the base, and the lifting adjustment structure is used to drive the bracket to rise or fall relative to the base.

3. The sealant tensile testing apparatus as described in claim 2, characterized in that, The bracket includes two vertically arranged support rods, and a crossbar passes between the two support rods. The crossbar is provided with a pivot that is rotatably connected to the support rods.

4. The sealant tensile testing apparatus as described in claim 3, characterized in that, The lifting and adjusting structure includes a lead screw assembly, a driving component, and a lifting guide structure. The lead screw assembly includes a screw rod vertically disposed on the base and capable of rotating relative to the base, and a nut disposed on the screw rod. A connecting seat is disposed on the nut. A support rod is vertically disposed on the connecting seat. The driving component is used to drive the screw rod to rotate. The lifting guide structure is used to restrict the rotation of the connecting seat relative to the base.

5. The sealant tensile testing apparatus as described in claim 4, characterized in that, The driving component is a handwheel, and a transmission structure is provided between the handwheel and the screw.

6. The sealant tensile testing apparatus as described in claim 4, characterized in that, The lifting guide structure includes a guide column vertically arranged on the base, and a through hole provided on the connecting seat to guide the guide column, with the guide column passing through the through hole.

7. The sealant tensile testing apparatus as described in claim 3, characterized in that, The bracket also includes a fixing member, to which the upper parts of the two support rods are connected.

8. The sealant tensile testing apparatus as described in claim 1, characterized in that, A measuring device is installed on the crossbar, which is used to provide feedback on whether the crossbar is in a horizontal position.

9. The sealant tensile testing apparatus as described in claim 8, characterized in that, The measuring device is a bubble level.

10. The sealant tensile testing apparatus as described in claim 1, characterized in that, The sealant tensile testing device also includes an extension rod that can be detachably connected to the end of the first segment away from the second segment.

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