CN223545099U

CN223545099U - Building material combustibility test sample fixture

Info

Publication number: CN223545099U
Application number: CN202423179510.8U
Authority: CN
Inventors: 白鹏; 李利; 胡兆军
Original assignee: Shenzhen Yongji Construction Engineering Inspection Co ltd
Current assignee: Shenzhen Yongji Construction Engineering Inspection Co ltd
Priority date: 2024-12-23
Filing date: 2024-12-23
Publication date: 2025-11-14
Anticipated expiration: 2034-12-23

Abstract

The utility model discloses a combustible test sample fixture for building materials, which relates to the technical field of performance test of building materials and specifically comprises a main board, a fixed frame and a movable frame, wherein the fixed frame is fixed on one side of the main board, the other end of the main board is connected with the movable frame through a connecting structure, the fixed frame and the movable frame both comprise fixed boards, clamping plates are clamped at two ends of one side of the fixed boards far away from the main board, each clamping plate comprises a first pressing plate and a second pressing plate which are alternately arranged, and the first pressing plate and the second pressing plate are semi-cylindrical. This building material combustible test sample anchor clamps through the setting of movable frame and fixed frame, and the position of splint can change according to the demand for the building material combustible test sample of this anchor clamps adaptable degree multiple size improves the adaptability of this anchor clamps, and first clamp plate and second clamp plate can form the poling pole, makes the adaptable tubular sample of this anchor clamps, further improves the adaptability of this anchor clamps.

Description

Building material combustibility test sample fixture

Technical Field

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

Background

The flammability test of building materials is to directly impact a vertically placed specimen with a small flame in the absence of external radiation to determine the flammability of the building product. The flammability test is an important test item for determining whether or not a building material or a product reaches the level B1 or B2 of flame retardancy. The construction materials require a fixture to hold the test sample for flammability testing.

In the related art, GB/T8626 method for testing the combustibility of building materials requires that a sample holder consists of two U-shaped stainless steel frames, the width is 15mm, the thickness (5+/-1) mm, and when the sample is filled, the two sample frames are clamped by screws so as to avoid the deflection of the sample. The sample clamp is suitable for plate-shaped building materials, is not easy to clamp and fix the tubular building materials, has low disassembly and assembly efficiency when two parts of the sample clamp are fastened by screws, and influences the use of the sample clamp.

Disclosure of utility model

The utility model provides a sample clamp for a combustible test of a building material, which solves the problems that the sample clamp provided in the background art is single in function, is not easy to clamp and fix a tubular sample, and has lower disassembly and assembly efficiency and influences the use of the sample clamp when two parts of the sample clamp are fastened by screws.

The utility model provides a technical scheme that a building material combustible test sample fixture comprises a main board, a fixed frame and a movable frame, wherein the fixed frame is fixed on one side of the main board, and the movable frame is connected with the other end of the main board through a connecting structure; the fixed frame and the movable frame comprise fixed plates, clamping plates are clamped at two ends of one side, far away from the main board, of each fixed plate, each clamping plate comprises a first clamping plate and a second clamping plate which are alternately arranged, each first clamping plate and each second clamping plate are semi-cylindrical, one end, far away from the main board, of each second clamping plate is fixedly connected with a bearing plate, a locating strip is fixed on the outer side of the horizontal end of each clamping plate in the fixed frame, and a locating groove matched with the locating strip is fixed on the outer side of the horizontal end of each clamping plate in the movable frame;

The side, far away from the fixed plate, of the main plate is clamped with a positioning block, the middle part of the positioning block is provided with a through hole, one side of the middle part of the positioning block is movably connected with a fixing nut, and the arc-shaped side walls of the first pressing plate and the second pressing plate are provided with external threads matched with the fixing nut;

The connecting structure comprises a ball screw movably connected with the main board, a gear fixedly connected with one end of the ball screw, a ball nut in threaded connection with the other end of the ball screw, a toothed plate movably connected with the inner cavity of the main board and a push-pull ring fixedly connected with one end of the toothed plate, wherein the ball nut is fixedly connected with a fixed plate in the movable frame, and the toothed plate is meshed with the gear.

Preferably, one side of the fixed plate is uniformly provided with a first jack and a second jack, the second jack is aligned with the first jack, the two ends of the first pressing plate and the second pressing plate are both fixed with inserting columns, and the inserting columns are matched with the first jack and the second jack.

Preferably, the outer diameters of the arc-shaped side walls of the first pressing plate and the second pressing plate are the same, the outer diameter of the bearing plate is the same as the outer diameter of the arc-shaped side wall of the first pressing plate, and the inner diameter of the through hole is larger than the outer diameter of the bearing plate.

Preferably, the one end that the mainboard kept away from the fixed plate is fixedly connected with cutting ferrule, locating piece and the inner chamber joint of cutting ferrule.

Preferably, the bottom fixedly connected with connecting block of push-pull ring, the bottom of connecting block and the top fixed connection of pinion rack one end, the one end that the mainboard inner chamber kept away from the fixed plate is equipped with the fluting, connecting block and grooved inner chamber swing joint.

Preferably, the distance between the first jack and the second jack is twice the distance between the plunger and the horizontal end of the first pressing plate.

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

1. the building material combustible test sample clamp can convert horizontal push-pull force into screwing force for driving the ball screw to rotate by utilizing the connecting structure, namely, rotary motion is converted into horizontal motion, when the position of the movable frame is changed, a worker saves labor, the speed of changing the position of the movable frame can be improved, and the clamp is convenient to use.

2. This building material combustible test sample anchor clamps through the setting of movable frame and fixed frame, and the position of splint can change according to the demand for the building material combustible test sample of this anchor clamps adaptable degree multiple size improves the adaptability of this anchor clamps, and first clamp plate and second clamp plate can form the poling pole, makes the adaptable tubular sample of this anchor clamps, further improves the adaptability of this anchor clamps.

Drawings

FIG. 1 is a schematic representation of a first embodiment of the structure of the present utility model;

FIG. 2 is a block diagram of the present utility model 1a back schematic view;

FIG. 3 is a schematic bottom view of the structure of the present utility model in FIG. 1;

FIG. 4 is a schematic cross-sectional view of a motherboard of the present utility model;

FIG. 5 is a bottom view of the structural locating block of the present utility model;

Fig. 6 is a schematic diagram of a second embodiment of the structure of the present utility model.

The device comprises a main plate 1, a fixed plate 2, a first pressing plate 3, a first inserting hole 4, a second pressing plate 5, a carrying plate 7, a positioning strip 8, a positioning groove 9, a 10, a ball nut 11, a push-pull ring 12, a positioning block 13, a fixing nut 14, a clamping sleeve 15, a toothed plate 16, a gear 17, a ball screw 18, a second inserting hole 19 and a slot.

Detailed Description

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

The utility model provides a building material combustible test sample fixture which comprises a main board 1, a fixed frame and a movable frame. One side of the main board 1 is fixedly provided with a fixed frame, the other end of the main board 1 is connected with a movable frame through a connecting structure, the connecting structure comprises a ball screw 17 movably connected with the main board 1, a gear 16 fixedly connected with one end of the ball screw 17, a ball nut 10 in threaded connection with the other end of the ball screw 17, a toothed plate 15 movably connected with an inner cavity of the main board 1 and a push-pull ring 11 fixedly connected with one end of the toothed plate 15, the toothed plate 15 is meshed with the gear 16, the bottom of the push-pull ring 11 is fixedly connected with a connecting block, the bottom of the connecting block is fixedly connected with the top of one end of the toothed plate 15, a slot 19 is arranged on the side wall of the main board 1, the connecting block is movably connected with the inner cavity of the slot 19, a user can change the position of the toothed plate 15 through horizontal movement of the push-pull ring 11, the toothed plate 15 can drive the meshed gear 16 to rotate when the toothed plate 15 moves, and the gear 16 drives the ball screw 17 fixedly connected with the toothed plate 17 to rotate, and the ball nut 10 in threaded connection with the toothed plate 17 can move in the direction of the ball screw 17. The ball nut 10 is fixedly connected with the movable frame, and the ball nut 10 can drive the movable frame to move when moving, so that the distance between the fixed frame and the movable frame is changed, and further the clamping or the unclamping of the clamp on the building material test sample can be realized.

According to the above description, when the clamp is used, the horizontal push-pull force can be converted into the screwing force for driving the ball screw 17 to rotate by using the connecting structure, namely, the rotary motion is converted into the horizontal motion, when the position of the movable frame is changed, the worker saves labor, the speed of changing the position of the movable frame can be improved, and the clamp is convenient to use.

The fixed frame and the movable frame comprise a fixed plate 2, two ends of one side, far away from the main plate 1, of the fixed plate 2 are respectively clamped with clamping plates, and the clamping plates can be used for clamping and fixing a sample. The clamp plate includes the first clamp plate 3 and the second clamp plate 5 that set up in turn, and the size of both first clamp plate 3 and second clamp plate 5 is the same, and first clamp plate 3 and second clamp plate 5 are half cylindrical structure, and when the horizontal end of first clamp plate 3 and the horizontal end of second clamp plate 5 were contacted, first clamp plate 3 and second clamp plate 5 can form cylindrical structure to the tubular sample can overlap outside cylindrical structure.

One end fixedly connected with loading board 7 that mainboard 1 was kept away from to second clamp plate 5, and the external diameter of first clamp plate 3 and second clamp plate 5 both arc lateral wall is the same, and the external diameter of loading board 7 is the same with the external diameter of first clamp plate 3 arc lateral wall, through the setting of loading board 7, and this anchor clamps when using, loading board 7 can support the sample, improves the reliability that the sample was held.

The outside of splint horizontal end is fixed with location strip 8 in the fixed frame, and the outside of splint horizontal end is fixed with the constant head tank 9 with the adaptation of location strip 8 in the movable frame, through setting up of location strip 8, can carry out spacingly to the sample for the sample that the size is the same keeps the uniformity in the position on this anchor clamps, reduces test error.

Through the setting of constant head tank 9, spacer 8 can insert in constant head tank 9, and the first clamp plate 3 or the second clamp plate 5 that be convenient for be provided with spacer 8 is contacted with second clamp plate 5 or first clamp plate 3 that be provided with constant head tank 9.

The ball nut 10 is fixedly connected with the fixed plate 2 in the movable frame, the fixed plate 2 is uniformly provided with the first jack 4 and the second jack 18 on one side far away from the main plate 1, the second jack 18 is aligned with the first jack 4, the inserting columns are fixed at one ends of the first pressing plate 3 and the second pressing plate 5, the inserting columns are matched with the first jack 4 and the second jack 18, the distance between the first jack 4 and the second jack 18 is twice the distance between the inserting columns and the horizontal end of the first pressing plate 3, and when the first pressing plate 3 and the second pressing plate 5 are contacted, the pipe penetrating rods formed by the first pressing plate 3 and the second pressing plate 5 can be simultaneously clamped with the first jack 4 and the second jack 18. And the outer surface of the pipe penetrating rod is provided with external threads.

One end of the main board 1, which is far away from the fixed board 2, is fixedly connected with a clamping sleeve 14, a positioning block 12 is clamped with the inner cavity of the clamping sleeve 14, a through hole is formed in the middle of the positioning block 12, a fixing nut 13 is movably connected to one side of the middle of the positioning block 12, external threads matched with the fixing nut 13 are arranged on the arc-shaped side walls of the first pressing plate 3 and the second pressing plate 5, the inner diameter of the through hole is larger than the outer diameter of the bearing plate 7, and the size of the through hole can be set according to requirements, so that the device is not limited. Through the arrangement of the positioning block 12 and the fixing nut 13, when the tubular building material is sleeved outside the pipe penetrating rod, the tubular building material can be supported and limited by the positioning block 12, and the position of the positioning block 12 can be fixed by the fixing nut 13.

From the above description, the clamp can adapt to tubular building samples and plate-shaped building samples in use, the adaptability of the clamp is improved, the position of the clamping plate can be changed, the clamp can adapt to samples with various sizes, and the adaptability of the clamp is further improved.

In summary, when the sample holder for the combustible test sample of the building material is used, if the sample for the combustible test sample of the building material is plate-shaped, the shape of the holder is shown in fig. 1 to 3, a worker changes the distance between the movable frame and the fixed frame by moving the push-pull ring 11 until the sample can be placed between the fixed frame and the movable frame, the worker places the sample on the clamping plate in the fixed frame, the positioning strip 8 contacts with the sample, the sample is limited, after the sample is placed, the worker moves the push-pull ring 11 reversely, the push-pull ring 11 drives the toothed plate 15 to move, the toothed plate 15 drives the ball screw 17 to move through the gear 16 meshed with the toothed plate, the ball screw 17 rotates to enable the ball nut 10 to move in the direction of the ball screw 17, the ball nut 10 drives the movable frame to move until the movable frame is tightly attached to the sample, and the sample for the combustible test sample of the building material is clamped and fixed by the holder.

If the sample used for the combustible sample of the building material is in a tubular structure, the shape of the clamp is as shown in fig. 6, after the sample is sleeved on the pipe penetrating rod, the sample is limited by the positioning block 12, the position of the sample is fixed by the fixing nut 13, and the clamp is used for clamping and fixing the sample.

Standard parts used in the present utility model can be purchased from the market, the special-shaped parts can be customized according to the descriptions of the specification and the drawings, the specific connection modes of the parts are conventional means such as bolts, rivets, welding and the like which are mature in the prior art, and the machines, the parts and the equipment are conventional models in the prior art, so that details which are not described in detail in the specification belong to the prior art which is well known to the person skilled in the art, and although the embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made in these embodiments without departing from the principle and spirit of the present utility model, and the scope of the present utility model is defined by the appended claims and equivalents thereof.

Claims

1. The clamp for the combustible test sample of the building material comprises a main board (1), a fixed frame and a movable frame, and is characterized in that the fixed frame is fixed on one side of the main board (1), the other end of the main board (1) is connected with the movable frame through a connecting structure, the fixed frame and the movable frame both comprise fixed plates (2), clamping plates are clamped at two ends of one side, far away from the main board (1), of the fixed plates (2), each clamping plate comprises a first clamping plate (3) and a second clamping plate (5) which are alternately arranged, the first clamping plate (3) and the second clamping plate (5) are semi-cylindrical, one end, far away from the main board (1), of the second clamping plate (5) is fixedly connected with a bearing plate (7), a positioning strip (8) is fixed on the outer side of the horizontal end of the clamping plate in the fixed frame, and a positioning groove (9) which is matched with the positioning strip (8) is fixed on the outer side of the horizontal end of the clamping plate in the movable frame;

One side of the main board (1) far away from the fixed board (2) is clamped with a positioning block (12), the middle part of the positioning block (12) is provided with a through hole, one side of the middle part of the positioning block (12) is movably connected with a fixing nut (13), and the arc-shaped side walls of the first pressing board (3) and the second pressing board (5) are provided with external threads matched with the fixing nut (13);

The connecting structure comprises a ball screw (17) movably connected with the main board (1), a gear (16) fixedly connected with one end of the ball screw (17), a ball nut (10) in threaded connection with the other end of the ball screw (17), a toothed plate (15) movably connected with the inner cavity of the main board (1) and a push-pull ring (11) fixedly connected with one end of the toothed plate (15), wherein the ball nut (10) is fixedly connected with a fixed plate (2) in the movable frame, and the toothed plate (15) is meshed with the gear (16).

2. The combustible test sample fixture for building materials, as set forth in claim 1, characterized in that a first jack (4) and a second jack (18) are uniformly arranged on one side of the fixed plate (2), the second jack (18) is aligned with the first jack (4), a plug post is fixed at one end of both the first pressing plate (3) and the second pressing plate (5), and the plug post is matched with both the first jack (4) and the second jack (18).

3. The combustible test sample fixture for building materials of claim 1 wherein the outer diameters of the arc-shaped side walls of the first pressing plate (3) and the second pressing plate (5) are the same, the outer diameter of the bearing plate (7) is the same as the outer diameter of the arc-shaped side wall of the first pressing plate (3), and the inner diameter of the through hole is larger than the outer diameter of the bearing plate (7).

4. The combustible test sample fixture for building materials, as set forth in claim 1, wherein the end of the main board (1) far away from the fixed board (2) is fixedly connected with a clamping sleeve (14), and the positioning block (12) is clamped with an inner cavity of the clamping sleeve (14).

5. The combustible test sample fixture for building materials, as set forth in claim 1, is characterized in that a connecting block is fixedly connected to the bottom of the push-pull ring (11), the bottom of the connecting block is fixedly connected with the top of one end of the toothed plate (15), a slot (19) is arranged at one end, far away from the fixed plate (2), of the inner cavity of the main plate (1), and the connecting block is movably connected with the inner cavity of the slot (19).

6. A combustible test sample holder for construction materials as claimed in claim 2 wherein the distance between the first receptacle (4) and the second receptacle (18) is twice the distance between the spigot and the horizontal end of the first platen (3).