CN218965175U

CN218965175U - Building materials flammability test sample anchor clamps and building materials flammability test machine

Info

Publication number: CN218965175U
Application number: CN202223091503.3U
Authority: CN
Inventors: 蔡昊; 刘超; 张东游
Original assignee: Taste Detection Technology Suzhou Co ltd
Current assignee: Taste Detection Technology Suzhou Co ltd
Priority date: 2022-11-21
Filing date: 2022-11-21
Publication date: 2023-05-05
Anticipated expiration: 2032-11-21

Abstract

The utility model discloses a building material flammability test sample fixture and a building material flammability test machine, wherein the building material flammability test sample fixture comprises a first clamping plate and a second clamping plate which is arranged opposite to the first clamping plate, and the first clamping plate and the second clamping plate are used for clamping a sample in a matching way; the top of the first clamping plate is provided with a first matching hole and a second matching hole which are perpendicular to each other and are horizontally arranged, and the first matching hole and the second matching hole can be selectively connected with a connecting column connected to the inner side wall of the chassis. The angle and the orientation of the sample can be changed and the angle change is 90 degrees through connecting the connecting column selectivity with the first matching hole and the second matching hole, so that the device is applicable to two building material flammability testers with vertical flame injection angles of the burner, has better universality and is very convenient to install.

Description

Building materials flammability test sample anchor clamps and building materials flammability test machine

Technical Field

The utility model relates to the technical field of building material flammability test, in particular to a building material flammability test sample clamp and a building material flammability test machine.

Background

The building material flammability test is a method of determining the flammability of a building product by directly impacting a vertically placed sample with a small flame in the absence of external radiation. The test was carried out by a building material flammability tester, in which a plate-like sample was held in a jig, the sample was set vertically, and a burner was fired at an angle of 45 degrees toward the sample.

The existing clamp is usually fixed in the building material flammability test machine only at the same angle, is usually arranged in parallel with (opposite to) the door of the building material flammability test machine, and cannot be adjusted in angle. Thus, the jig can be applied only to the building material combustibility test machine, and cannot be applied to a building material combustibility test machine in which the burner mounting angle is perpendicular thereto.

In addition, the existing clamp comprises two U-shaped clamping plates, the two clamping plates are connected through bolts, when the two clamping plates are connected, the bolts penetrate through one clamping plate and then are aligned with bolt holes of the other clamping plate, and samples cannot be quickly fixed on the clamp.

Accordingly, there is a need for an improvement over the prior art to overcome the deficiencies described in the prior art.

Disclosure of Invention

The utility model aims to provide a building material flammability test sample fixture and a building material flammability test machine, wherein the building material flammability test sample fixture has better universality.

In order to achieve the above object, in one aspect, the present utility model provides a sample fixture for testing the combustibility of building materials, which is characterized by comprising a first clamping plate and a second clamping plate opposite to the first clamping plate, wherein the first clamping plate and the second clamping plate are used for clamping a sample in a matching way;

the top of the first clamping plate is provided with a first matching hole and a second matching hole which are perpendicular to each other and are horizontally arranged, and the first matching hole and the second matching hole can be selectively connected with a connecting column connected to the inner side wall of the chassis.

Further, the upper end of the first clamping plate is provided with a connecting plate and a pipe body connected with the connecting plate, the axis of the pipe body is perpendicular to the first clamping plate, the pipe hole of the pipe body is the first matching hole, and the second matching hole is formed in the pipe body.

Further, the pipe body is further provided with a threaded hole communicated with the first matching hole, and the building material flammability test sample clamp further comprises a first bolt screwed in the threaded hole.

Further, the first clamping plate and the second clamping plate comprise a first plate body and two second plate bodies extending from two ends of the first plate body to the same side, and the first clamping plate and the second clamping plate are connected through a plurality of second bolts.

Further, one of the first clamping plate and the second clamping plate is provided with a guide post, the other one of the first clamping plate and the second clamping plate is provided with a guide hole matched with the guide post, and the number of the guide posts is at least two.

Further, one end of the guide post is detachably connected with a limiting piece, so that a clamping plate which is in sliding fit with the guide post is prevented from being separated from the guide post.

Further, an elastic piece is arranged between the limiting piece and the clamping plate which is in sliding fit with the guide post.

Further, the distance from the guide post to the inner edge of the second plate body of the first clamping plate is not smaller than the distance from the second bolt to the inner edge of the second plate body of the first clamping plate.

On the other hand, the utility model provides a building material flammability test machine, which comprises a machine case, a connecting column connected to the inner side wall of the machine case and the building material flammability test sample clamp, wherein the connecting column is connected with the first matching hole or the second matching hole.

Further, the building material flammability testing machine also comprises a vertical guide rail assembly connected with the inner side wall of the machine case and a horizontal guide rail assembly connected with the vertical guide rail assembly, wherein the connecting column is connected with the horizontal guide rail assembly, and the position of the connecting column can be adjusted in a vertical plane through the vertical guide rail assembly and the horizontal guide rail assembly.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the utility model, the top of the first clamping plate is provided with the first matching hole and the second matching hole which are vertical and horizontal, and the first clamping plate is selectively connected with the first matching hole and the second matching hole through the connecting column, so that the angle and the direction of a sample can be changed, and the angle change is 90 degrees, thus, the device is applicable to two building material flammability test machines with vertical flame injection angles of a burner, has better universality, and is very convenient to install.

2. As an improvement, one of the first clamping plate and the second clamping plate is provided with a guide column, the other one is provided with a guide hole matched with the guide column, and the first clamping plate and the second clamping plate can be kept aligned through the matched positioning of the guide column and the guide hole, so that the first clamping plate and the second clamping plate are conveniently connected through the second bolt, and the convenience of operation is improved.

Drawings

FIG. 1 is a schematic structural view of a sample fixture for testing the combustibility of building materials according to an embodiment of the present utility model.

Fig. 2 is a schematic view of the attachment of the building material flammability test sample holder of fig. 1 to a connecting post, the connecting post being disposed through the first mating hole.

Fig. 3 is a schematic view of the attachment of the building material flammability test sample holder of fig. 1 to a connecting post, the connecting post being disposed through the second mating hole.

Fig. 4 is a schematic structural view of a first clamping plate according to an embodiment of the present utility model.

Fig. 5 is a schematic structural view of a second clamping plate according to an embodiment of the present utility model.

Fig. 6 is a schematic structural view of a first clamping plate according to an embodiment of the present utility model, in which the first clamping plate is provided with guide posts.

Fig. 7 is a schematic structural view of a sample fixture for testing the combustibility of building materials according to an embodiment of the present utility model, showing guide posts and stoppers.

Fig. 8 is a plan view of a first clamping plate provided with a second bolt according to an embodiment of the present utility model.

Fig. 9 is a schematic view of the construction material flammability test specimen holder of fig. 7 provided with an elastic member.

FIG. 10 is a schematic illustration of a building material flammability test specimen holder of the present utility model attached to a horizontal rail assembly and a vertical rail assembly.

Detailed Description

In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not limiting. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present application are shown in the drawings. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

The terms "comprising" and "having" and any variations thereof herein are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

As shown in fig. 1, a specimen holder for a flammability test of building materials (hereinafter referred to as a holder) according to a preferred embodiment of the present utility model includes a first clamping plate 20 and a second clamping plate 21 disposed opposite to the first clamping plate 20.

The first clamping plate 20 and the second clamping plate 21 are used for clamping the sample 3 in a matching manner, and a schematic view of the two clamping plates clamping the sample 3 in a fixed plate shape is shown in fig. 1.

The top of the first clamping plate 20 is provided with a first coupling hole 200 and a second coupling hole 201 which are perpendicular to each other and are horizontally arranged. The chassis of the building material flammability test machine is generally rectangular in box structure, as shown in fig. 2 and 3, a connecting column 1 is arranged on the inner side wall of the chassis, the connecting column 1 is vertical to the inner side wall of the chassis, and the connecting column 1 is used for connecting a clamp. The first and second mating holes 200, 201 of the clamp are selectively connectable to the connecting post 1, i.e. the connecting post 1 may be threaded into the first mating hole 200 (see fig. 2) or into the second mating hole 201 (see fig. 3).

Since the first and second mating holes 200 and 201 are perpendicular to each other, the angle between the jig and the sample 3 held by the jig is changed to 90 ° when the connection column 1 is connected to a different mating hole, and the sample 3 can be switched between two perpendicular positions, which can be mounted directly against the cabinet door or side-to-side against the cabinet door. Therefore, the device is applicable to two building material flammability test machines with vertical flame injection angles of the burner, and has better universality.

In some embodiments, as shown in fig. 4, the upper end of the first clamping plate 20 is provided with a connecting plate 202 protruding upwards and a tube body 203 connected with the connecting plate 202, the tube body 203 is arranged vertically to the connecting plate 202, the tube hole is the first matching hole 200, the second matching hole 201 is arranged on the tube body 203 along the radial direction of the tube body 203, thus, the axes of the two matching holes are vertical, after being connected with the connecting column 1, the position of the sample 3 can be changed by 90 degrees along the vertical axis, and the height is unchanged. In other embodiments, two vertical and horizontal tube bodies 203 may be disposed at the upper end of the first clamping plate 20, where the two tube bodies 203 are disposed at intervals in the height direction, and the respective tube holes are the first mating hole 200 and the second mating hole 201.

In some embodiments, referring to fig. 1 and 4, the tube 203 is provided with a threaded hole 204 in communication with the first mating hole 200, and the building material flammability test sample holder further comprises a first bolt 4 threaded into the threaded hole 204. By screwing the first bolt 4, the end of the first bolt 4 can be abutted against the connecting column 1, so that the clamp is fixed on the connecting column 1, after the first bolt 4 is unscrewed, the fixation between the clamp and the connecting column 1 can be released, and the clamp can be adjusted to the position on the connecting column 1 or taken down from the connecting column 1.

When the fixture is installed, only the corresponding matching hole is sleeved on the connecting column 1, the installation is very convenient, simultaneously, the fixture and the connecting column 1 can be fixed or loosened by rotating the first bolt 4, and the position of the fixture on the connecting column 1 can be conveniently adjusted, so that the operation is more convenient. The first bolt 4 is preferably a hand-screwed bolt, which is more convenient for manual operation.

In some embodiments, the first clamping plate 20 and the second clamping plate 21 are U-shaped, as shown in fig. 4 and 5, and each of them includes a first plate 23 and second plates 24 connected to both ends of the first plate 23, and the two second plates 24 extend toward the same side and are perpendicular to the first plate 23. The connection plate 202 described above is provided on the first plate body 23 of the first clamping plate 20. In fig. 1, the sample 3 is clamped between the second plate 24 of the first clamping plate 20 and the second plate 24 of the second clamping plate 21, but for a sample 3 of greater length, the sample 3 may extend between the two first plates 23. The center of the U-shaped splint has a large exposed area, facilitating the burner to burn sample 3 in that area.

The first clamping plate 20 and the second clamping plate 21 are connected through a second bolt 22, and the second bolt 22 can pass through the first clamping plate 20 to be in threaded connection with the second clamping plate 21 or can pass through the second clamping plate 22 to be in threaded connection with the first clamping plate 20. In this embodiment, as shown in fig. 4 and 5, a plurality of (specifically, 3) through holes 205 are formed on two sides of the first clamping plate 20, screw holes 206 corresponding to the positions of the through holes 205 are formed on the second clamping plate 21, and the second bolts 22 pass through the through holes 205 and are screwed with the screw holes 206 on the second clamping plate 21, so as to clamp the sample 3 between the two clamping plates. Preferably, the second bolt 22 is also a hand-screwed bolt.

In order to solve the problem that the second bolt 22 is difficult to conveniently lock the two clamping plates if the through hole 205 and the screw hole 206 are not aligned accurately and there is a positional deviation when the two clamping plates are locked by the second bolt 22, one of the first clamping plate 20 and the second clamping plate 21 is provided with a guide post 25, and the other is provided with a guide hole 26 coupled with the guide post 25. In this embodiment, as shown in fig. 6 and 7, a plurality of guide posts 25 are provided on the first clamping plate 20, and preferably, the number of guide posts 25 is greater than or equal to two to achieve reliable positioning, and in the embodiment shown in fig. 7, the number of guide posts 25 is four. The second clamping plate 21 is provided with a guide hole 26 corresponding to the position of the guide post 25, and the guide post 25 is fitted in the guide hole 26.

By arranging the guide posts 25 and the guide holes 26, the alignment of the first clamping plate 20 and the second clamping plate 21 can be realized, and when the guide posts 25 are inserted into the guide holes 26, the through holes 205 on the first clamping plate 20 are aligned with the screw holes 206 on the second clamping plate 21, so that the attached second bolts 22 are more convenient, and the positions of the two clamping plates do not need to be frequently adjusted.

As a preferred embodiment, as shown in fig. 8, the distance L1 of the guide post 25 to the inner edge of the second plate 24 of the first clamping plate 20 is not smaller than the distance L2 of the first bolt 22 to the inner edge of the second plate 24 of the first clamping plate 20, so that the guide post 25 does not hinder the installation of the sample 3.

In some embodiments, as shown in fig. 8, a stopper 250 is detachably connected to one end of the guide post 25, and the stopper 250 has an outer size larger than that of the guide post 25, which serves to prevent a clamping plate slidably coupled to the guide post 25 (i.e., the second clamping plate 21) from being separated from the guide post 25. As a preferred embodiment, a stopper 250 is screwed to the end of the guide post 25 to achieve a detachable connection with the guide post 25. The limiting member 250 is provided such that the second clamping plate 21 is coupled to the guide post 25 so as not to be separated from the first clamping plate 20, and when the sample 3 is mounted, only a certain distance is required to separate the two clamping plates, and then the sample 3 is inserted and the second bolt 22 is locked. When the sample 3 is required to be detached, the second bolt 22 is only required to be loosened, and then the sample 3 is required to be extracted, and as the two clamping plates are not separated, the guide post 25 is not required to be repeatedly inserted into the guide hole 26, so that the clamp is further convenient to use.

In some embodiments, as shown in fig. 9, an elastic member 27 is disposed between the limiting member 250 and the clamping plate slidably coupled to the guide post 25 (i.e., the second clamping plate 21), and the elastic member 27 is preferably a spring sleeved on the guide post 25, one end of which abuts against the second clamping plate 21, and the other end of which abuts against the limiting member 250. The elastic piece 27 can apply extrusion force to the second clamping plate 21, so that when the second bolt 22 is unlocked, the second clamping plate 21 and the first clamping plate 20 can also clamp the sample 3 preliminarily, and the sample 3 is prevented from moving, so that the position of the sample 3 is not easy to change when the second bolt 22 is locked, and the clamp is more convenient to use. In addition, after the elastic member 27 is provided, the number of the second bolts 22 can be appropriately reduced, and at this time, the sample 3 can be held reliably.

The utility model also provides a building material flammability test machine, which comprises a machine case (not shown), a connecting column 1 connected to the inner side wall of the machine case and a building material flammability test sample fixture as described above, wherein the connecting column 1 can be selectively connected with the first matching hole 200 or the second matching hole 201 to change the direction of the sample 3.

As shown in fig. 10, the building material flammability test machine further comprises a vertical guide rail assembly 5 connected with the inner side wall of the machine box and a horizontal guide rail assembly 6 connected with the vertical guide rail assembly 5.

The vertical rail assembly 5 includes a vertical rail 50, a first slider 51 slidably coupled to the vertical rail 50, and a first mounting plate 52 coupled to the first slider 51, the first mounting plate 52 and the first slider 51 being movable along the vertical rail 50 to adjust a position in a vertical direction. A bolt (not shown) may be provided on the first mounting plate 52 to be screwed thereto, and the position of the first mounting plate 52 may be fixed by abutting the bolt against the vertical rail 50.

The horizontal rail assembly 6 includes a horizontal rail 60, a second slider 61 slidably coupled to the horizontal rail 60, and a second mounting plate 62 coupled to the second slider 61, the second mounting plate 62 and the second slider 61 being movable along the horizontal rail 60 to adjust a position in a horizontal direction. Similarly, a bolt (not shown) may be provided on the second mounting plate 62 to be screwed thereto, and the position of the second mounting plate 52 may be fixed by abutting the bolt against the horizontal rail 60. Since the horizontal rail assembly 6 as a whole can adjust the position in the vertical direction by the vertical rail assembly 5, the position of the second mounting plate 62 can be moved in the vertical plane.

The connecting column 1 is connected to the horizontal rail assembly 6, in particular, it is connected to the second mounting plate 62 by welding or bolting, etc., so that the connecting column 1 can be adjusted in position in the vertical plane by the vertical rail assembly 5 and the horizontal rail assembly 6, i.e. the position of the sample 3 in the vertical plane is adjustable.

Further, as the position of the clamp on the connecting column 1 is adjustable, and the connecting column 1 is perpendicular to the vertical plane, the sample 3 can be adjusted in three axial positions in space, so that the position between the sample 3 and the burner can be adjusted to a position required by a test, and the reliability and the accuracy of the test result are ensured.

The foregoing is merely exemplary of the utility model and other modifications can be made without departing from the scope of the utility model.

Claims

1. The building material flammability test sample clamp is characterized by comprising a first clamping plate (20) and a second clamping plate (21) which is arranged opposite to the first clamping plate (20), wherein the first clamping plate (20) and the second clamping plate (21) are used for cooperatively clamping a sample (3);

the top of the first clamping plate (20) is provided with a first matching hole (200) and a second matching hole (201) which are perpendicular to each other and are horizontally arranged, and the first matching hole (200) and the second matching hole (201) can be selectively connected with a connecting column (1) connected to the inner side wall of the chassis.

2. The building material flammability test sample fixture according to claim 1, characterized in that a connecting plate (202) and a tube body (203) connected with the connecting plate (202) are arranged at the upper end of the first clamping plate (20), the axis of the tube body (203) is perpendicular to the first clamping plate (20), the tube hole of the tube body (203) is the first matching hole (200), and the second matching hole (201) is formed on the tube body (203).

3. The building material flammability test sample holder of claim 2, further characterized in that the tube body (203) is further provided with a threaded hole (204) in communication with the first mating hole (200), and further comprising a first bolt (4) screwed into the threaded hole (204).

4. A building material flammability test sample holder as set forth in any of claims 1 to 3, c h a r a c t e r i z e d in that said first clamping plate (20) and said second clamping plate (21) each comprise a first plate body (23), two second plate bodies (24) extending from both ends of said first plate body (23) to the same side, said first clamping plate (20) and said second clamping plate (21) being connected by a plurality of second bolts (22).

5. The building material flammability test sample holder of claim 4, characterized in that one of said first clamping plate (20) and said second clamping plate (21) is provided with guide posts (25), the other is provided with guide holes (26) mating with said guide posts (25), and the number of said guide posts (25) is at least two.

6. The specimen holder for testing the combustibility of building materials according to claim 5, wherein one end of the guide post (25) is detachably connected with a stopper (250) for preventing the clamping plate slidably coupled to the guide post (25) from being separated from the guide post (25).

7. The building material flammability test sample holder of claim 6, where an elastic member (27) is provided between the stopper (250) and the clamping plate slidably coupled to the guide post (25).

8. The building material flammability test sample holder of claim 5, where the distance from the guide post (25) to the inner edge of the second plate (24) of the first clamping plate (20) is no less than the distance from the second bolt (22) to the inner edge of the second plate (24) of the first clamping plate (20).

9. A building material flammability test machine, comprising a chassis, a connecting column (1) connected to the inner side wall of the chassis, and a building material flammability test sample holder according to any one of claims 1 to 8, wherein the connecting column (1) is connected to the first mating hole (200) or the second mating hole (201).

10. The building material flammability test machine of claim 9, further comprising a vertical rail assembly (5) connected to the inside wall of the cabinet and a horizontal rail assembly (6) connected to the vertical rail assembly (5), wherein the connecting column (1) is connected to the horizontal rail assembly (6) and is capable of adjusting the position in a vertical plane by the vertical rail assembly (5) and the horizontal rail assembly (6).