CN217403658U - Lamp holder bending moment measuring device - Google Patents

Abstract

Lamp stand bending moment measuring device, including the base, install the arm of force pole on the base, the anchor clamps that are used for fixed lamps and lanterns are installed to the one end of arm of force pole, the other end of arm of force pole is provided with and is used for maintaining its balanced structure, one side top that is close to balanced structure on the arm of force pole is provided with rather than the contact and is used for measuring torque's force transducer. The utility model has the advantages that: wide application range, quick measurement and simple and reasonable structure.

Description

Lamp holder bending moment measuring device

Technical Field

The utility model belongs to the technical field of the lamps and lanterns test, concretely relates to lamp stand bending moment measuring device.

Background

The lighting lamps are divided into ceiling lamps, table lamps, wall lamps, floor lamps and the like, and refer to appliances capable of transmitting light, distributing and changing light distribution of a light source, and comprise all parts except the light source, which are required by fixing and protecting the light source, and circuit accessories which are necessary for connecting with a power supply. As a daily consumable, the lighting fixture is widely used for home lighting, commercial lighting, industrial lighting, road lighting, landscape lighting, special lighting, and the like. With the progress of economic society, novel light sources such as fluorescent lamps, energy-saving lamps and LEDs are in succession, so that the novel light sources are rich and multiple in choice, more energy-saving and environment-friendly, and play an important role in daily life and urban construction of people.

In the safety test of the lamp, aiming at the lamp with a lamp holder (such as a bulb) according to the requirements of IEC62560:2015-04 standard chapter 6, the lamp holder cannot generate an overlarge bending moment in the fixed installation and use processes to cause the displacement and falling of the lamp holder to cause a circuit short circuit and cause impact and electric shock risks to people, a judgment of a structural integrity test is required, the main test process comprises the steps of fixing the lamp holder of the lamp and horizontally installing the lamp, measuring the length from the lamp holder of the lamp to the top end of the lamp bulb of the lamp, then weighing the gravity at the top end of the lamp bulb of the lamp by using a balance scale, then multiplying the measured length of the lamp and the gravity at the top end of the bulb to calculate the moment as the bending moment of the lamp holder generated in the horizontal fixed installation of the lamp in the lamp holder, wherein the bending moment cannot exceed the bending moment value specified in the standard, and the lamp holders with different sizes correspond to the bending moments with different sizes, the bending moment calculated by actual measurement can not exceed the bending moment value corresponding to the size of the lamp holder, namely the lamp is considered to be installed in the lamp holder for use and meets the safety requirement.

The above test requires that the bending moment of the lamp with the lamp cap after installation cannot be too large, which is actually reflected in that the weight and size of the lamp cannot be too heavy. In the prior art, in a bending moment test experiment process of a lamp cap of a lamp, after the lamp is generally fixed horizontally, a length L from the lamp cap to the top end of a bulb is measured through a measuring ruler, a push-pull force meter is used for supporting or pulling the top end of the bulb of the lamp to measure a downward force F generated by the weight of the lamp, and then a bending moment M is obtained through calculation. The length L and the pressure F can be accurately measured even though the measuring process of the lamp with a regular shape is complicated, the length L and the pressure F can not be accurately measured in a top end position fuzzy difficult area of the lamp product with an irregular shape, and the calculated bending moment is not very accurate, so that the judgment result is influenced.

Disclosure of Invention

For solving the above-mentioned problem that prior art exists, the utility model provides a wide, the measurement of application scope is fast, simple structure is reasonable lamp stand bending moment measuring device.

The utility model adopts the technical proposal that:

lamp stand bending moment measuring device, including the base, its characterized in that: install the arm of force pole on the base, the anchor clamps that are used for fixed lamps and lanterns are installed to the one end of arm of force pole, the other end of arm of force pole is provided with and is used for maintaining its balanced structure, one side top that is close to balanced structure on the arm of force pole is provided with rather than the contact and is used for measuring torque's force transducer.

Further, the force sensor is electrically connected with a weight display meter for displaying the weight value.

Further, the arm-of-force pole is installed on first support, first support passes through the stand to be fixed on the base.

Furthermore, the first support is a U-shaped structure, and one end of the arm-of-force rod penetrates through the first support and then is fixedly connected with the clamp.

Further, the force arm rod and the central shaft of the clamp are on the same axis.

Further, the arm of force lever contains a clamp with a length of 0.102 m.

Further, the balance structure comprises an adjustable spring, one end of the spring is connected with the upper surface of the arm-of-force rod, and the other end of the spring is connected with an adjusting structure for adjusting the elasticity of the arm-of-force rod.

Further, balanced structure and force sensor all install on the second support, the second support passes through the stand to be fixed on the base.

Furthermore, the second support is an L-shaped structure, the adjusting structure of the balance structure is arranged on the second support, and the spring and the force sensor of the balance structure are both vertically arranged between the second support and the force arm rod.

Further, the clamp is an adjustable chuck clamp and is used for fixedly mounting lamp caps with different sizes.

The utility model has the advantages that: wide application range, quick measurement and simple and reasonable structure.

Drawings

Fig. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic side view of a portion of the structure of the present invention;

fig. 3 is a schematic top view of the present invention.

Detailed Description

The present invention will be further described with reference to the following specific embodiments, but the present invention is not limited to these specific embodiments. It will be recognized by those skilled in the art that the present invention encompasses all alternatives, modifications, and equivalents as may be included within the scope of the claims.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation of the first and second features not being in direct contact, but being in contact with another feature between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

Referring to fig. 1-3, this embodiment provides a lamp holder bending moment measuring device, including base 1, install arm of force 2 on the base 1, the anchor clamps 3 that are used for fixed lamps and lanterns are installed to the one end of arm of force 2, the other end of arm of force 2 is provided with the balanced structure that is used for maintaining its balance, be provided with rather than the contact and be used for measuring force sensor 4 of moment above the one side that is close to balanced structure on the arm of force 2, force sensor 4 and the weight display list 9 electric connection that is used for showing the weight value.

In the embodiment, the arm lever 2 is installed on a first bracket 8, and the first bracket 8 is fixed on the base 1 through a stand column. The first support 8 is of a U-shaped structure, and one end of the arm-of-force rod 2 penetrates through the first support 8 and then is fixedly connected with the clamp 3. The force arm rod 2 and the central shaft of the clamp 3 are on the same axis. The arm lever 2 comprises a clamp 3 with a length of 0.102 m. The clamp 3 is an adjustable chuck clamp and is used for fixedly mounting lamp holders with different sizes.

The balance structure in this embodiment comprises an adjustable spring 5, one end of the spring 5 is connected with the upper surface of the arm lever 2, and the other end is connected with an adjusting structure 6 for adjusting the elasticity of the arm lever. The balance structure and the force sensor 4 are both arranged on a second support 7, and the second support 7 is fixed on the base 1 through an upright post. The second support 7 is an L-shaped structure, the adjusting structure 6 of the balance structure is installed on the second support 7, and the spring 5 and the force sensor 4 of the balance structure are both vertically arranged between the second support 7 and the arm lever 2.

The utility model discloses during the use, concrete step is as follows:

1. first, the weight display meter 9 is powered on, the arm lever 2 is maintained horizontal by adjusting the spring 5, the top end of the force sensor 4 is adjusted, the top end just contacts with the arm lever 2 without interaction force, the weight display meter 9 is observed to display 0 to confirm, and if the displayed weight is not 0, the reset 0 operation can be carried out by pressing the CLR for a long time.

2. Then, a lamp sample to be tested is horizontally arranged on a clamp 3, the lamp holder is clamped by the clamp 3, the central shaft of the clamp 3 is connected with a force arm rod 2 into a whole and is kept on the same axis, and a downward bending moment is generated on the lamp holder at the end of the lamp after the lamp is fixed.

3. According to the lever principle, in order to maintain the arm lever 2 in a horizontal position, a moment of the same magnitude is generated on the arm lever 2 side, and the moment can be calculated by multiplying the force F detected by the force sensor 4 by the distance L between the detection point of the force sensor 4 and the lamp holder fixing side of the clamp, wherein L is the length L of the arm lever 2 (including the clamp), and F is converted into F mg by directly reading M (kg) from the weight display table 9, without the need of complicated measurement of the distance between the lamp holder and the top of the bulb and the acting force on the top of the bulb.

4. When the length L of the arm lever 2 is fixed to L0.102M, g 9.8N/kg, and the moment M is calculated to F mg L9.8M 0.102n.m, the magnitude of the weight value M read from the weight display table 9 can be directly regarded as the magnitude of the bending moment generated by the lamp and used for comparison with the standard limit value.

The utility model discloses application scope is wide, the measurement is fast, simple structure is reasonable.

Claims (10)

1. Lamp stand bending moment measuring device, including the base, its characterized in that: install the arm of force pole on the base, the anchor clamps that are used for fixed lamps and lanterns are installed to the one end of arm of force pole, the other end of arm of force pole is provided with and is used for maintaining its balanced structure, one side top that is close to balanced structure on the arm of force pole is provided with rather than the contact and is used for measuring torque's force transducer.

2. The lampholder bending moment measuring device according to claim 1, wherein: the force sensor is electrically connected with a weight display meter for displaying the weight value.

3. The lampholder bending moment measuring device according to claim 1, wherein: the arm-force lever is installed on a first support, and the first support is fixed on the base through an upright column.

4. The lampholder bending moment measuring device according to claim 3, wherein: the first support is of a U-shaped structure, and one end of the arm-force rod penetrates through the first support and then is fixedly connected with the clamp.

5. The lampholder bending moment measuring device according to claim 1, wherein: the force arm rod and the central shaft of the clamp are positioned on the same axis.

6. The lampholder bending moment measuring device according to claim 5, wherein: the arm of force lever contains a clamp with a length of 0.102 m.

7. The lampholder bending moment measuring device according to claim 1, wherein: the balance structure comprises an adjustable spring, one end of the spring is connected with the upper surface of the arm-of-force rod, and the other end of the spring is connected with an adjusting structure for adjusting the elasticity of the arm-of-force rod.

8. The lampholder bending moment measuring device according to claim 7, wherein: the balance structure and the force sensor are both arranged on a second support, and the second support is fixed on the base through an upright post.

9. The lampholder bending moment measuring device according to claim 8, wherein: the second support is an L-shaped structure, an adjusting structure of the balance structure is arranged on the second support, and a spring and a force sensor of the balance structure are vertically arranged between the second support and the force arm rod.

10. The lampholder bending moment measuring device according to claim 1, wherein: the clamp is an adjustable chuck clamp.

Images