CN203881519U - Stool stability testing machine - Google Patents

Abstract

The utility model discloses a chair and stool stability testing machine. It includes a chair and stool stability testing machine, including a frame, a moving beam, a loading head part and a loading head seat, and the moving beam cooperates with a moving guide rod on the frame through linear bearings installed at both ends , the loading head seat is installed on the moving beam, and the loading head part is fixed on the loading head seat. The utility model uses a cylinder to lift self-made weights of different quantities and weights, loads the tested chairs and stools with weights within the range required by the relevant national standards, and simulates the loads that the chairs and stools bear in daily use, so as to carry out all functions of the chairs and stools. The detection of anti-tipping ability. It is characterized in that: the method of combining the cylinder and the weight is used to load the test piece, the loading force is stable and reliable, the size range of the test stool is large, and the height range of the applicable stool is 300~1200mm; three target stools can be tested at the same time Test, the structure is compact, the overall size is 1340×2260×2717mm. The cylinder stroke is small, 300mm.

Description

A chair and stool stability testing machine

technical field

The utility model relates to a quality testing device for chair and stool furniture, in particular to a chair and stool stability testing machine. The device is simple and convenient to use, and the force loading is stable and reliable.

Background technique

Furniture quality inspection is an important part of modern inspection technology, which plays a very important role in ensuring product quality, improving product output and safe production. Therefore, the ability to ensure convenient, reliable, and stable testing of furniture has attracted the attention of various countries.

At present, for the loading method of the stability testing machine, the method of cylinder loading or weight loading is mostly used in the prior art. The cylinder loading method is easy to operate, but its force is affected by the air pressure, and the accuracy is not high. The impact effect when the parts are in contact, so that the loading force does not meet the requirements; the weight loading method is reliable and stable, but the operation is inconvenient and unsafe, especially for the loading test of large loads.

Secondly, most of the existing testing machines cannot meet the requirements of chair and stool specimens with a wide range of external dimensions. For cylinder loading, due to the size range of the tested chair and stool, the stroke of the cylinder and the external dimensions of the testing machine are increased, which increases the cost.

Utility model content

The purpose of the utility model is to overcome the problems of convenient loading and stable loading force in the detection test process in the prior art, and provide a set of chair and stool stability testing machine, which has stable and reliable force loading, simple equipment and convenient operation.

For achieving the above object, design of the present utility model is:

In order to solve the loading problem, the utility model adopts the combination of the cylinder and the weight. The cylinder and the weight are connected by a buckle, and the weight to be loaded is lifted by the cylinder. After the loading head contacts the test piece, the buckle Loosen and ensure that the loading force is the weight of the weight, and is not affected by the thrust of the cylinder.

A series of self-made weights are used for the test. During the test, the appropriate weights are selected according to the test requirements. During the loading process, the cylinder is used to pull up the weight, and when it is put down, the buckle is loosened after the weight contacts the specimen, and the test is loaded stably.

In order to solve the problem of the cylinder stroke and the external dimensions of the testing machine, the utility model adopts the method of multi-stage installation of the cylinder position. There are multiple rows of installation holes on the cylinder installation plate. The installation position of the cylinder and the number of buckles are determined according to the specific size of the test piece. One piece of pull rod and multiple extension rods are made by ourselves, and the tie rods and extension rods are connected by threads.

According to above-mentioned utility model design, the utility model adopts following technical scheme:

A chair and stool stability testing machine, comprising a frame, a moving beam, a loading head part and a loading head seat, the moving beam cooperates with a moving guide rod on the frame through linear bearings installed at its two ends, and the loading The head seat is installed on the moving beam, and the loading head part is fixed on the loading head seat.

The frame is composed of upper and lower beams of aluminum profiles and left and right columns to form a cuboid frame, and a bottom plate is installed on the beam at the bottom of the frame; the moving guide rod is installed under the upper beam of the frame, and a specimen fixing block is connected by threads fixed on the bottom plate.

The moving beams are installed on the moving guide rods of the frame, 2 to 5 pieces in total; there are linear guide rails installed on the moving beams.

The loading head part includes a pull rod and an extension rod; threaded connection; the lower end of the pull rod 9 is connected with the weight plate, and weights are placed on the weight plate, and the weight plate is hingedly connected with the pull rod; the weight includes 1 Initial weights, 17 10kg weights, 2 5kg weights, 2 2.5kg weights, where the sum of initial weights, loading head and related parts is 10kg.

The structure of the loading head seat is as follows: a linear guide rail slider is installed inside the loading head seat, which cooperates with the linear guide rail on the moving beam; and a cylinder is connected with a loading head seat plate through a cylinder mounting plate; Some buckles are connected between the upper ends of the pull rods of the head.

Compared with the prior art, the utility model has the following obvious substantive features and advantages: the loading process of the stability test is more reliable and stable, and more realistically simulates the loading process of the chair and stool in actual use. The overall size of the testing machine is reduced, and the stroke of the cylinder is shortened. The overall size of the utility model can be 1340×2260×2717mm, the stroke of the cylinder is 300mm, and the height range of the applicable chair and stool is 300~1200mm.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Figure 2 is a schematic diagram of the structure of the frame components.

Figure 3 is a schematic diagram of the structure of the moving beam.

Fig. 4 is a schematic diagram of the structure of the loading head.

Fig. 5 is a schematic diagram of the structure of the loading head seat.

Figure 6 is a schematic diagram of the structure of the extension rod.

Fig. 7 is a schematic diagram of the initial weight structure.

Fig. 8 is a structural schematic diagram of a 10kg weight.

Figure 9 is a schematic diagram of the structure of the specimen fixing block.

Figure 10 is a schematic diagram of the structure of the tie rod.

Fig. 11 is a schematic diagram of the structure of the loading head seat plate.

Figure 12 is a structural schematic diagram of the cylinder mounting plate.

Fig. 13 is a schematic diagram of the structure of the weight plate.

Figure 14 is a schematic diagram of the bottom plate structure.

Fig. 15 is a schematic diagram of the structure of the moving guide rod.

Fig. 16 is a schematic diagram of the structure of the linear guide rail.

Figure 17 is a schematic diagram of the cylinder.

Figure 18 is a schematic diagram of the clasp mechanism.

Detailed ways

Preferred embodiment of the present utility model is described as follows in conjunction with accompanying drawing:

Embodiment one:

Referring to Figures 1 to 17, the stool stability testing machine includes a frame (1), a moving beam (2), a loading head part (3) and a loading head seat (4), and is characterized in that: the moving beam ( 2) Cooperate with a moving guide rod (14) on the frame (1) through the linear bearings installed at both ends, the loading head seat (4) is installed on the moving beam (2), and the loading head part (3 ) is fixed on the loading head seat (4).

Embodiment two:

This embodiment is basically the same as Embodiment 1, and the special features are as follows:

The frame (1) is a cuboid frame formed by connecting the upper and lower beams of aluminum profiles and the left and right columns, and a bottom plate (13) is installed on the beam at the bottom of the frame (1); the moving guide rod (14) is installed on the frame (1 ) under the upper beam, there is a specimen fixing block (8) fixed on the bottom plate (13) through threaded connection.

The moving beam (2) is installed on the moving guide rod (14) of the frame (1), 2 to 5 pieces in total; a linear guide rail (15) is installed on the moving beam (2).

The loading head part (3) includes a pull rod (9) and an extension rod (5); threaded connection is adopted; the lower end of the pull rod 9 is connected to the weight plate (12), and weights are placed on the weight plate (12) Above, the weight plate (12) is hingedly connected with the pull rod (9); the weights include 1 initial weight (6), 17 10kg weights (7), 2 5kg weights, and 2 2.5kg weights , where the sum of the mass of the initial weight (6) and the loading head (3) and related parts is 10kg.

The structure of the loading head seat (4) is: the loading head seat (4) is equipped with a linear guide rail slider inside, which cooperates with the linear guide rail (15) on the moving beam (2); and a cylinder (16) passes through a cylinder The mounting plate (11) is connected with a loading head seat plate (10); there are some clasps to connect between the extension rod of the cylinder (16) and the upper end of the pull bar (9) of the loading head (3).

Embodiment three:

Referring to Fig. 1, the stool stability testing machine includes a frame part (1) and a loading part (2).

Before the test, put the tested chair and stool into a suitable position on the bottom plate of the testing machine frame part (2), and use the screw connection between the fixing block (8) and the bottom plate to fix the tested object on the bottom plate of the testing machine. Then determine the installation position of the cylinder and the number of buckles according to the height of the test piece, determine the total weight of the weight (7) according to the test requirements, and install the weight. After the machine is initialized, the cylinder push rod is retracted, and the weight is pulled up to a certain height. Then the cylinder push rod is pushed out, the weight falls on the loading point of the test piece, the buckle is released naturally, and the loading head naturally forms a stable force on the tested object. The chair and stool stability testing machine has three stations. If necessary, three targets can be tested at the same time. the

Claims (3)

1. A chair and stool stability testing machine, including a frame (1), a moving beam (2), a loading head part (3) and a loading head seat (4), characterized in that: the moving beam (2) passes The linear bearings installed at its two ends cooperate with a moving guide rod (14) on the frame (1), the loading head seat (4) is installed on the moving beam (2), and the loading head part (3) is fixed on on the loading head seat (4); the loading head part (3) includes a pull rod (9) and an extension rod (5); threaded connection is adopted; the lower end of the pull rod (9) is connected to the weight plate (12), with The weight is placed on the weight plate (12), and the weight plate (12) is hinged to the pull rod (9); the weight includes 1 initial weight (6), 17 10kg weights (7), and 2 5kg weight, two 2.5kg weights, wherein the sum of the initial weight (6) and the loading head part (3) and related parts is 10kg; the structure of the loading head seat (4) is: the loading head seat (4) There is a linear guide rail slider inside, which cooperates with the linear guide rail (15) on the moving beam (2); and a cylinder (16) is connected to a loading head seat plate (10) through a cylinder mounting plate (11) There are some clasps (17) to connect between the pull rod (9) upper end of the cylinder (16) extension rod and the loading head (3). 2. The chair and stool stability testing machine according to claim 1, characterized in that: the frame (1) is a cuboid frame formed by connecting the upper and lower beams of aluminum profiles and the left and right columns, and a bottom plate (13) is installed on the frame ( 1) On the beam at the bottom; the moving guide rod (14) is installed under the upper beam of the frame (1), and a specimen fixing block (8) is fixed on the bottom plate (13) through screw connection. 3. The chair and stool stability testing machine according to claim 1, characterized in that: the moving beam (2) is installed on the moving guide rod (14) of the frame (1), 2 to 5 pieces in total; there are straight lines Guide rail (15) is installed on the mobile beam (2).