CN102998040A - Test method of bearing force of wood groove board and auxiliary experiment shelf thereof - Google Patents

Abstract

The invention discloses a test method of bearing force of a wood groove board. The method includes the following steps: A. preparing the wood groove board; B. inserting one or a plurality of hardware accessories into a pit groove of the wood groove board; C. placing the wood groove board into a clamping groove of the auxiliary experiment shelf; D. pushing the auxiliary experiment shelf to enable stressed portions of the hardware accessories to be stretched into a test area of a force measuring device; E. enabling the force measuring device to increase applied pressure on the stressed portion in constant speed; and F. acquiring a test result. Aluminum strips or plastic strips used for fixing the hardware accessories are inserted in the pit groove of the wood groove board, then the hardware accessories are installed, the system is fixed on the auxiliary experiment shelf, and the other ends of the hardware accessories are continuously stressed by the force measuring device to conduct quantitative analysis on the bearing force of the wood groove board and measure the largest force range that the wood groove board can bear. Therefore, pointed products can be made combining customer needs and the evaluation.

Description

A test method for the bearing capacity of wooden slabs and its auxiliary test frame

technical field

The invention relates to a test method for bearing force of a wooden grooved plate and an auxiliary test frame thereof.

Background technique

Grooves are made on the surface of MDF, plywood or other boards to form decorative stripes or fixed pendants, which are called grooved boards. Due to the different materials of the boards, the weight of the pendant that the surface pits of different boards can bear is not the same. At present, there is no national standard or industry standard for the test of the load-bearing capacity of the pits of this type of product.

Contents of the invention

The problem to be solved by the present invention is to design a test method capable of testing the bearing capacity of wooden slabs, aiming at the deficiencies of the above-mentioned technologies.

The technical scheme that the present invention adopts for solving its problem is:

A test method for the bearing capacity of wooden grooved boards, comprising the following steps:

A. Prepare the wooden slot board, cut the wooden slot board to make its shape and size correspond to the slot of the auxiliary experiment rack,

B. Insert one or more pieces of hardware fittings into the pits of the wooden slats, the hardware fittings include connectors corresponding to the pits, extension rods extending outward, and force-bearing parts at the ends of the extension rods;

C. Put the wooden trough into the slot of the auxiliary test rack whose width corresponds to the thickness of the wooden trough with the hardware fittings facing the right end of the auxiliary test rack and the pit groove parallel to the horizontal;

D. Push the auxiliary test frame so that the force-bearing part of the hardware accessories extends into the test area of the dynamometer;

E. The dynamometer increases the pressure on the force-bearing part at a constant rate;

F. When there are obvious cracks in the pit or when the force-bearing part loses weight momentarily, the pressure value displayed by the dynamometer, the product of the pressure value and the length of the hardware fittings is the maximum load-bearing moment of the pit.

As an improvement of the above technical solution, in the step B, an aluminum strip or a plastic strip for fixing the hardware fittings is provided in the pit, and the connectors of the hardware fittings are inserted into the aluminum strip or the plastic strip. In step D, the right end of the auxiliary test frame abuts against the frame body of the force measuring instrument while the force-receiving part extends into the test area.

An auxiliary test frame applied to the method of testing the bearing capacity of wooden trough boards, comprising a main body of the test frame and a test platform located at the upper right end of the main body of the test frame. The test platform is provided with one or more vertically arranged slots, Openings are provided on the right side or both sides of the slot.

In the present invention, the main body of the experiment frame includes a support frame for supporting the test platform, a base frame for placing the support frame, and a plurality of universal wheels at the bottom of the base frame.

In the present invention, a gravity block or a heavy toolbox is provided on the left side of the underframe.

In the present invention, a handle for pushing the main body of the experiment rack to move is provided on the left side of the bottom frame.

In the present invention, the right end surface of the test platform and the right end surface of the bottom frame are on the same vertical plane.

In the present invention, the widths of the multiple slots are different, and the width of each slot corresponds to the standard thickness of the wooden board.

The beneficial effects of the present invention are: the present invention inserts aluminum strips or plastic strips for fixing hardware fittings into the pits of the wooden slats, and then installs the hardware fittings, and then fixes this system on the auxiliary experiment frame, The other end of the hardware fittings uses a dynamometer to continuously apply pressure, so as to make a quantitative analysis of the bearing capacity of the wooden trough, and measure the maximum force range that the wooden trough can bear, so that it can be combined with customer needs and this Evaluation to make targeted products.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

Fig. 1 is the structural representation of auxiliary experiment frame;

Fig. 2 is the front view of Fig. 1;

Fig. 3 is the top view of Fig. 1;

Figure 4 is a schematic diagram of the force measuring structure.

Detailed ways

Referring to Fig. 1 to Fig. 4, a kind of test method of wooden channel plate bearing force provided by the present embodiment comprises the following steps:

A, prepare the wooden channel board 6, cut the wooden channel board 6 to make its shape and size correspond to the slot 3 of the auxiliary experiment rack.

B. Insert one or more pieces of hardware fittings 7 into the pits 61 of the wooden groove plate 6, the hardware fittings 7 include connectors corresponding to the pits 61, extension rods extending outwards, and receiving rods at the end of the extension rods force part; because wooden groove plate 6 is in use, in order to make its appearance more attractive in appearance, usually can be provided with aluminum strip or plastic strip 9 in pit groove 61, so in order to obtain more real data, when testing, can be in the pit After adding an aluminum strip or a plastic strip 9 in the groove 61, the hardware accessories 7 are inserted.

C. Put the wooden trough plate 6 into the auxiliary test rack slot 3 corresponding to the thickness of the wooden trough plate 6 with the hardware fittings 7 facing the right end of the auxiliary test frame and the pit groove 61 parallel to the level. At the same time, the hardware accessories must be ensured The force-bearing portion of 7 exceeds the right edge of the test bench 2 and can reach the force-measuring area of the dynamometer 8.

D. Push the auxiliary test frame so that the force-bearing part of the hardware fitting 7 extends into the test area of the dynamometer 8, and when the force-bearing part extends into the test area, the right end of the auxiliary test frame is against the frame of the dynamometer 8, increasing It improves the stability of the auxiliary experimental frame and makes the measurement more accurate.

E. The dynamometer 8 increases the pressure on the force-receiving part at a constant rate.

F. When there are obvious cracks in the pit 61 or when the force-bearing part loses weight momentarily, the pressure value displayed by the dynamometer 8, the product of the pressure value and the length of the hardware fitting is the maximum load-bearing moment of the pit 61.

An auxiliary test frame applied to the above test method, comprising a test frame main body 1, a test stand 2 positioned at the upper right end of the test stand main body 1, said test stand 2 is provided with one or more vertically arranged draw-in slots 3, Openings 4 are provided on the right side or both sides of the card slot 3 . In this embodiment, four card slots 3 are provided on the test platform 2, and the width of each card slot 3 is 15 mm, 16 mm, 18 mm, and 25 mm, corresponding to the thickness of a standard board.

As a preferred embodiment, the experimental frame main body 1 includes a support frame 11 supporting the test bench 2, a chassis 12 for placing the support frame 11, and a plurality of universal wheels 13 positioned at the bottom of the chassis 12. The left side is provided with a handle for pushing the main body 1 of the experiment rack to move. The test frame can be easily pushed by the handle and the universal wheel 13, which is convenient for moving the auxiliary test frame and loading the groove plate to be tested.

Further, in order to make the whole test frame more stable, the left side of the bottom frame 12 is provided with a gravity block or a heavy tool box 5, so as to avoid the phenomenon that the left end of the test frame is warped due to excessive stress on the slot plate. Simultaneously, the right end face of the test bench 2 and the right end face of the underframe 12 are on the same vertical plane. During the test, the right end face of the underframe 12 is against the dynamometer, which increases the stability of the test frame and makes its measurement more accurate. .

Of course, in addition to the above-mentioned embodiments, other equivalent technical solutions of the present invention should also be within the protection scope thereof.

Claims (9)

1. a test method of wooden slab bearing capacity, it is characterized in that comprising the following steps: A. Prepare the wooden trough (6), cut the wooden trough (6) so that its shape and size correspond to the slot (3) of the auxiliary experiment rack, B. Insert one or more pieces of hardware fittings (7) into the pits (61) of the wooden trough (6), the hardware fittings (7) include connectors corresponding to the pits (61), extending outwards The extension rod and the force-bearing part at the end of the extension rod; C. Put the wooden trough (6) into the slot of the auxiliary test rack whose width corresponds to the thickness of the wooden trough (6) with the hardware fittings (7) facing the right end of the auxiliary test rack and the pit (61) parallel to the level (3) within; D. Push the auxiliary test frame so that the force-bearing part of the hardware fitting (7) extends into the test area of the dynamometer (8); E. The dynamometer (8) increases the pressure on the force-bearing part at a constant rate; F. When there are obvious cracks in the pit (61) or when the force-bearing part loses weight momentarily, the pressure value displayed by the dynamometer (8), the product of the pressure value and the length of the hardware fitting is the maximum value of the pit (61) Bearing moment. 2. A method for testing the bearing capacity of wooden grooved boards according to claim 1, characterized in that: in the step B, aluminum strips or plastic bars for fixing hardware accessories (7) are arranged in the pits (61) Bar (9), the connecting head of hardware fittings (7) is inserted in this aluminum bar or plastic bar (9). 3. the test method of a kind of wooden groove board bearing force according to claim 1, it is characterized in that: in described D step, the right end of auxiliary experiment rack is pressed against force measuring instrument ( 8) on the frame. 4. An auxiliary test frame applied to the method of testing the bearing capacity of wooden slabs, characterized in that: it includes a test frame main body (1), a test bench (2) located at the upper right end of the test frame main body (1), and the test bench (2) is provided with one or more vertically arranged card slots (3), and the right side or both sides of the card slot (3) are provided with openings (4). 5. An auxiliary test frame applied to the test method of the bearing capacity of wooden slabs according to claim 4, characterized in that: the main body (1) of the test frame includes a support frame (11) supporting the test bench (2) , an underframe (12) for placing the support frame (11) and a plurality of universal wheels (13) at the bottom of the underframe (12). 6. An auxiliary experimental frame applied to the test method of the bearing capacity of wooden slabs according to claim 5, characterized in that: the left side of the bottom frame (12) is provided with a gravity block or a heavy tool box (5). 7. The auxiliary test frame applied to the test method of the bearing capacity of wooden slabs according to claim 5, characterized in that: the left side of the bottom frame (12) is provided with a device for pushing the main body (1) of the test frame to move handle. 8. The auxiliary test frame applied to the test method of the bearing capacity of wooden grooved boards according to claim 5, characterized in that: the right end face of the test bench (2) and the right end face of the bottom frame (12) are at the same on a vertical plane. 9. The auxiliary test frame applied to the test method of the bearing capacity of wooden grooved boards according to claim 4, characterized in that: the widths of the multiple grooves (3) are different, and each groove (3) The widths correspond to the standard thickness of wooden boards.

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