CN102519431A - Lifting platform inclination measurement device and measurement method - Google Patents

Abstract

The invention provides a device and a method for measuring the inclination of a lifting platform. The device includes a moving plate (1), which is horizontally installed on the upper surface of the lifting platform to be measured, and has at least 3 contacts. The at least The three contacts are distributed in the same plane, and the interval angle between the contacts is 360 degrees/the number of contacts; the travel switch group (2) is arranged above the moving plate (1). The method includes the following steps: step 1, the operator starts the lifting system, and under the pull of the cable, the moving plate (1) rises and falls with the lifting platform to be tested; step 2, the moving plate (1) rises and falls with the lifting platform to be tested, When the travel switch group (2) used for speed measurement is in position, one contact on the moving plate (1) touches the travel switch. The implementation method is simple, and the inclination of the lifting platform at a specified position can be measured.

Description

A device and method for measuring the inclination of a lifting platform

technical field

The invention belongs to the technical field of balance degree measurement, and relates to a device capable of measuring the inclination of a lifting platform and a realization method thereof.

Background technique

With the rapid development of social economy, lifting systems similar to high pole lamps have become an indispensable part of daily life, appearing in airports, entertainment plazas, and municipal roads. However, there is no device in the high mast lamp lifting system that can judge the inclination of the high mast lamp lamp panel during the lifting process, and cannot provide a basis to judge whether the lamp panel is tilted or not, so the lamp panel cannot be corrected. The inclination of the lamp panel is one of the most important technical indicators for the high pole lamp lifting system.

The original purpose of the present invention is to solve the inclination problem in the lamp panel lifting of the high mast lamp lifting system, but it is not only applicable to the high mast lamp lifting system, but also can be applied to similar lifting systems.

Contents of the invention

Technical problem: The object of the present invention is to provide a lifting platform inclination measuring device and its implementation method.

Technical solution: In order to solve the above technical problems, the present invention provides a platform inclination measuring device, which includes

The mobile plate is installed horizontally on the upper surface of the lifting platform to be measured, and has at least 3 contacts, and the at least 3 contacts are distributed in the same plane, and the interval angle between the contacts is 360° Degree/Number of contacts;

Travel switch group, set above the moving plate, it includes 4 travel switches, the 4 travel switches are divided into two categories according to function, one of which is used to calculate the lifting speed, and the other is used to calculate the inclination ;

The inclination calculation component is connected with the travel switch group, records the output result of the travel switch group, and calculates the lifting speed of the lifting platform and the inclination of the lifting platform according to the result;

The measurement result display component is connected with the inclination calculation component, and uses the output signal of the inclination calculation component as an input to display the inclination.

Preferably, the travel switch group includes three travel switches for calculating the inclination and one travel switch for calculating the lifting speed of the lifting platform;

The three travel switches used to calculate the inclination are evenly distributed on the same horizontal plane, that is, the distribution interval between the three travel switches is 120 degrees;

The limit switch used to calculate the lifting speed of the lifting platform is located directly below any one of the other three limit switches used to calculate the inclination; the outputs of the four limit switches are respectively connected to the input ports of the inclination calculation component.

Preferably, when the contact of the moving plate touches the 4 travel switches of the travel switch group, record the closing time t1, t1, t2, t3 of the 4 travel switches of the travel switch group; use the built-in algorithm of the inclination calculation component to calculate Calculate the lifting speed of the lifting platform to calculate the inclination of the lifting platform.

Preferably, the inclination calculation component is a single-chip microcomputer or a digital signal processor intelligent control chip.

Preferably, the measurement result display component is a light emitting diode display or a liquid crystal display.

The present invention also provides a method for measuring the inclination of the lifting platform, which is characterized in that the method includes the following steps:

Step 1, the operator starts the lifting system, and under the pull of the cable, the mobile plate rises and falls with the lifting platform to be tested;

Step 2, the moving plate goes up and down with the lifting platform to be tested. When it is lifted to the position of the travel switch group for speed measurement in the travel switch group, one contact on the moving board touches the travel switch;

Step 3, the moving board is lifted up and down with the lifting platform to be tested. When it is lifted to the position of the travel switch of the travel switch group for calculating the inclination, the 3 contacts on the moving board touch the 3 travel switches;

Step 4, the travel switches of the travel switch group are respectively connected to the inclination calculation component, and the switch signal of the travel switch is output to the inclination calculation component;

Step 5, after the inclination calculation component obtains the switch signal of the travel switch, the built-in algorithm in the smart chip of the inclination calculation component calculates the lifting platform lifting speed value, and then calculates the inclination;

Step 6, the inclination calculation component is connected with the measurement result display component, and the measurement result is output to the measurement result display component to display the measured inclination.

Preferably, the measured inclination is represented by the angle between the moving plate and the horizontal plane.

Preferably, the number of travel switches used to calculate the inclination is the same as the number of contacts on the moving plate, and they are evenly distributed and have the same position distribution.

Beneficial effect: the beneficial effect that the present invention has compared with existing technology is:

1. The realization principle of the present invention is relatively simple, the designed device is relatively easy to realize, the measurement method is obtained through strict theoretical derivation, and the measurement result is relatively reliable.

2. The measuring device designed in the present invention is separated from the lifting platform, which can avoid the problems of separately supplying power to the measuring device of the lifting platform and obtaining measurement signals from the moving lifting platform.

Description of drawings

Fig. 1 is a schematic diagram of a lifting platform inclination measuring device according to the present invention;

Fig. 2 describes the structural composition of the moving board in Fig. 1, and the three contacts of the moving board are respectively 1a, 1b, and 1c.

Fig. 3 is a tilting situation 1 of the lifting platform to be measured during the lifting process according to a method for measuring the tilt of the lifting platform according to the present invention.

Fig. 4 is the inclination situation 2 of the lifting platform to be measured during the lifting process according to a method for measuring the tilt of the lifting platform according to the present invention.

Fig. 5 is a tilting situation 3 of the lifting platform to be measured during the lifting process according to a method for measuring the tilt of the lifting platform according to the present invention.

Moving board 1, travel switch group 2, inclination calculation component 3, measurement result display component 4.

Detailed ways

The present invention will be described below with reference to the accompanying drawings.

The composition of a lifting platform inclination measuring device will be introduced in detail below in conjunction with the accompanying drawings.

In Fig. 1, the main structure and components of the inclination measuring device are shown. The inclination measuring device consists of:

The mobile plate is installed on the upper surface of the lifting platform and is installed horizontally. The moving plate contains 3 contacts, and the 3 contacts are installed on the same plane, and the interval between the 3 contacts is 120 degrees;

The travel switch group consists of 4 travel switches, one of which is used to calculate the lifting speed, and the other 3 travel switches are used to calculate the inclination. The travel switch used to calculate the lifting speed is located at h directly below any one of the other 3 travel switches used to calculate the inclination;

The inclination calculation component takes the switch signal of the travel switch group as input, and calculates the inclination of the lifting platform through an internal algorithm;

The measurement result display component uses the output of the slope calculation component as an input to display the measured slope.

Referring to Fig. 1-5, the lifting platform inclination measuring device provided by the present invention comprises

The mobile plate 1 is installed horizontally on the upper surface of the lifting platform to be measured, and it has at least 3 contacts, and the at least 3 contacts are distributed in the same plane, and the interval angle between the contacts is 360 degrees/number of contacts; if there are three contacts, the three contacts are separated by 120 degrees.

The travel switch group 2 is set above the moving plate 1, and includes 4 travel switches. The 4 travel switches are divided into two types according to their functions. One type of travel switch is used to calculate the lifting speed, and the other type of travel switch is used to calculate inclination;

The inclination calculation component 3 is connected with the travel switch group 2, records the output result of the travel switch group 2, and calculates the lifting speed of the lifting platform and the inclination of the lifting platform according to the result;

The measurement result display component 4, the measurement display component 4 is connected with the inclination calculation component 3, and uses the output signal of the inclination calculation component as an input to display the inclination.

The travel switch group 2 includes three travel switches for calculating the inclination and one travel switch for calculating the lifting speed of the lifting platform;

The three travel switches used to calculate the inclination are evenly distributed on the same horizontal plane, that is, the distribution interval between the three travel switches is 120 degrees;

The travel switch used to calculate the lifting speed of the lifting platform is located directly below any one of the other three travel switches used to calculate the inclination; the outputs of the four travel switches are respectively connected to the input ports of the inclination calculation component (3).

The function of the inclination calculation component 3 is to record the closing time t1, t1, t2, t3 of the 4 travel switches of the travel switch group when the contact of the moving plate 1 touches the 4 travel switches of the travel switch group 2; Use the built-in algorithm of the inclination calculation component to calculate the lifting speed of the lifting platform, so as to calculate the inclination of the lifting platform.

The inclination calculation component 3 is a single-chip microcomputer or a digital signal processor intelligent control chip.

The measurement result display component 4 is a light emitting diode display or a liquid crystal display.

The present invention also provides a method for measuring the inclination of the lifting platform, the method comprising the following steps:

Step 1, the operator starts the lifting system, and under the pull of the cable, the mobile plate 1 rises and falls with the lifting platform to be tested;

Step 2, the moving board 1 goes up and down with the lifting platform to be tested, and when it is lifted to the position of the travel switch group for speed measurement in the travel switch group 2, one contact of the moving board 1 touches the travel switch;

Step 3, the moving board 1 is raised and lowered with the lifting platform to be tested, and when it is lifted to the position of the travel switch of the travel switch group 2 for calculating the inclination, the three contacts on the moving board touch the three travel switches;

Step 4, the travel switches of the travel switch group 2 are respectively connected with the inclination calculation component 3, and the switch signal of the travel switch is output to the inclination calculation component;

Step 5, after the inclination calculation component 3 obtains the switch signal of the travel switch, the built-in algorithm in the smart chip of the inclination calculation component calculates the lift platform lifting speed value, and then calculates the inclination;

Step 6, the inclination calculation component 3 is connected with the measurement result display component 4, and the measurement result is output to the measurement result display component, and the measured inclination is displayed.

The measured inclination is represented by the angle between the moving plate 1 and the horizontal plane.

In the travel switch group 2, the number of travel switches used to calculate the inclination is the same as the number of contacts on the moving plate 1, and they are evenly distributed and have the same position distribution.

In Fig. 1, the inclination calculation component measures the time t1 when the antenna 1 touches the travel switch used to calculate the inclination in the travel switch group at the corresponding position, and the time to touch the travel switch used to calculate the lifting speed is T1. Let the rising speed of the lifting platform be v, and the distance between the travel switch used to calculate the lifting speed in the travel switch group and the travel switch used to calculate the inclination at the corresponding position is h.

The following is the calculation process of the rising speed v of the lifting platform:

$\mathrm{<span\; class="notranslate">\; v</span>}<span\; class="notranslate">\; =</span>\frac{\mathrm{<span\; class="notranslate">\; h</span>}}{\mathrm{<span\; class="notranslate">\; t</span>}\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; T</span>}\mathrm{<span\; class="notranslate">\; 1</span>}}$

Figures 3, 4, and 5 respectively describe three inclination situations of the lifting platform during the lifting process in a method for realizing the tilt measurement of the lifting platform. A, B, and C respectively represent the three contacts of the moving plate, and the three contacts form an equilateral triangle ABC, and the side length of the triangle is a. Let the angle α denote the inclination of the lifting platform.

In Fig. 3, the representative inclination situation is that one contact A is at the upper end, and the other two contacts B and C are at the same horizontal position at the lower end. In this case, t2=t3>t1. Plane BCO1 is a horizontal plane, and AO1 is the distance from point A to plane BCO1. AD and O1D are respectively perpendicular to BC, then the angle between AD and O1D is the inclination α to be measured. The following is the slope calculation process:

AO1=v·(t2-t1)

AD＝a·sin60°

formula one

In Fig. 4, the representative inclination situation is that two contacts A and B are at the same horizontal position and at the upper end, and another contact C is at the lower end. In this case, t1=t2<t3. Plane CEF is the horizontal plane, and DO1 is the distance from line AB to plane CEF. CD is perpendicular to AB, CO1 is perpendicular to EF, and the angle between CD and CO1 is the inclination α to be measured.

The following is the slope calculation process:

DO1=v·(t3-t1)

CD＝a·sin60°

公式二

formula two

In Fig. 5, the representative inclination situation is that any two of the three contacts are not on the same horizontal plane, one contact A is at the uppermost end, one contact B is at the middle, and the other contact C is at the bottom end. In this case, t1<t2<t3. Plane CDO1 is the horizontal plane, AO1 is the distance from point A to plane CDO1, and BO2 is the distance from point B to plane CDO1. BE, O2E are respectively perpendicular to CD, and the angle between BE and O2E is the inclination α to be measured.

The following is the slope calculation process:

It is known that AB=BC=a, ∠CBD=120°, BO2=v·(t3-t2), AO1=v·(t3-t1).

It can be seen from Figure 4 that the triangles ADO1 and BDO2 are similar, and it can be obtained by the similarity theorem

$\frac{\mathrm{<span\; class="notranslate">\; BO</span>}\mathrm{<span\; class="notranslate">\; 2</span>}}{\mathrm{<span\; class="notranslate">\; AO</span>}\mathrm{<span\; class="notranslate">\; 1</span>}}<span\; class="notranslate">\; =</span>\frac{\mathrm{<span\; class="notranslate">\; BD</span>}}{\mathrm{<span\; class="notranslate">\; AD</span>}}<span\; class="notranslate">\; =</span>\frac{\mathrm{<span\; class="notranslate">\; BD</span>}}{\mathrm{<span\; class="notranslate">\; AB</span>}<span\; class="notranslate">\; +</span>\mathrm{<span\; class="notranslate">\; BD</span>}}$

Substituting the known quantity, thus calculating, $\mathrm{BD}=\frac{\mathrm{AB}\&CenterDot;\mathrm{BO}2}{(\mathrm{AO}1-\mathrm{BO}2)}=\frac{a\&Center\; Dot;v\&CenterDot;(t3-t2)}{v(t3-t1)-v(t3-t2)}=\frac{a\&Center\; Dot;(t3-t2)}{(t2-t1)}.$

Apply the law of cosines to triangle CBD:

CD ² ＝BC ² +BD ² -2BC·BD·cos∠CBD

$<span\; class="notranslate">\; =</span>\frac{\mathrm{<span\; class="notranslate">\; a</span>}<span\; class="notranslate">\; \&Center\; Dot;</span>\sqrt{{<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; t</span>}\mathrm{<span\; class="notranslate">\; 2</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; t</span>}\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; )</span>}^{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; +</span>{<span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; t</span>}\mathrm{<span\; class="notranslate">\; 3</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; t</span>}\mathrm{<span\; class="notranslate">\; 2</span>}<span\; class="notranslate">\; )</span>}^{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; +</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; t</span>}\mathrm{<span\; class="notranslate">\; 2</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; t</span>}\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; t</span>}\mathrm{<span\; class="notranslate">\; 3</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; t</span>}\mathrm{<span\; class="notranslate">\; 2</span>}<span\; class="notranslate">\; )</span>}}{\mathrm{<span\; class="notranslate">\; t</span>}\mathrm{<span\; class="notranslate">\; 2</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; t</span>}\mathrm{<span\; class="notranslate">\; 1</span>}}$

Compute the area S _CBD of the triangle CBD,

Substituting the known quantity, thus calculating,

代入已知量即可得到α的值，即倾斜度的值。therefore,

The value of α can be obtained by substituting the known quantity, that is, the value of the inclination.

In fact, the inclination situations 1 and 2 of the lifting platform to be measured in the lifting platform inclination measurement implementation method shown in FIG. 3 and FIG. 4 are special cases of the inclination situation 3 shown in FIG. 5 . In the inclination formula deduced from the inclination situation in Fig. 5:

When t2=t3>t1,

The calculation result is the same as formula 1.

When t1=t2<t3,

It is the same as the calculation result in formula 2.

The inclination measurement method described above only introduces the measurement of the inclination of the moving platform in the vertical direction, and this implementation method can also be applied to the measurement of the inclination of the moving platform in other directions.

The above descriptions are only preferred embodiments of the present invention, and the scope of protection of the present invention is not limited to the above embodiments, but all equivalent modifications or changes made by those of ordinary skill in the art according to the disclosure of the present invention should be included within the scope of protection described in the claims.

Claims (8)

1. A lifting platform inclination measuring device, characterized in that: the device includes The moving plate (1), which is installed horizontally on the upper surface of the lifting platform to be measured, has at least 3 contacts, and the at least 3 contacts are distributed in the same plane, and the distance between the contacts is The angle is 360 degrees/the number of contacts; Travel switch group (2), set above the moving plate (1), includes 4 travel switches, the 4 travel switches are divided into two types according to their functions, one type of travel switch is used to calculate the lifting speed, and the other type of travel switch The switch is used to calculate the inclination; The inclination calculation component (3) is connected with the travel switch group (2), records the output result of the travel switch group (2), and calculates the lifting speed of the lifting platform and the inclination of the lifting platform according to the result; The measurement result display component (4), the measurement display component (4) is connected with the inclination calculation component (3), and uses the output signal of the inclination calculation component as an input to display the inclination. 2. The lifting platform inclination measuring device according to claim 1, characterized in that: the travel switch group (2) includes three travel switches for calculating the inclination and one travel for calculating the lifting speed of the lifting platform switch; The three travel switches used to calculate the inclination are evenly distributed on the same horizontal plane, that is, the distribution interval between the three travel switches is 120 degrees; The limit switch used to calculate the lifting speed of the lifting platform is located directly below any one of the other three limit switches used to calculate the inclination; the outputs of the four limit switches are respectively connected to the input ports of the inclination calculation component (3). 3. The device for measuring the inclination of the lifting platform according to claim 1, characterized in that: the function of the inclination calculation component (3) is that when the contact of the moving plate (1) touches the limit switch group (2) When there are 4 limit switches, record the closing time t1, t1, t2, t3 of the 4 limit switches in the limit switch group; use the built-in algorithm of the inclination calculation component to calculate the lifting speed of the lifting platform, thereby calculating the inclination of the lifting platform. 4. The lifting platform inclination measuring device according to claim 1, characterized in that: the inclination calculation component (3) is a single-chip microcomputer or a digital signal processor intelligent control chip. 5. The device for measuring the inclination of the lifting platform according to claim 1, characterized in that: the measurement result display component (4) is a light-emitting diode display or a liquid crystal display. 6. a lifting platform inclination measuring method, is characterized in that, the method comprises the steps: Step 1, the operator starts the lifting system, and under the pull of the cable, the moving plate (1) moves up and down with the lifting platform to be tested; Step 2, the moving plate (1) goes up and down with the lifting platform to be tested, and when it is lifted to the position of the travel switch group for speed measurement in the travel switch group (2), one contact on the moving board (1) touches the stroke switch; Step 3: The moving board (1) moves up and down with the lifting platform to be tested. When it is lifted to the travel switch position of the travel switch group (2) for calculating the inclination, the 3 contacts on the moving board touch the 3 travel switches ; Step 4, the travel switches of the travel switch group (2) are respectively connected to the inclination calculation component (3), and the switching signal of the travel switch is output to the inclination calculation component; Step 5, after the inclination calculation component (3) obtains the switch signal of the travel switch, the built-in algorithm in the smart chip of the inclination calculation component calculates the lifting speed value of the lifting platform, and then calculates the inclination; Step 6, the inclination calculation component (3) is connected with the measurement result display component (4), and the measurement result is output to the measurement result display component to display the measured inclination. 7. The method for measuring the inclination of the lifting platform according to claim 6, wherein the measured inclination is represented by the angle between the moving plate (1) and the horizontal plane. 8. The method for measuring the inclination of the lifting platform according to claim 6, characterized in that: in the travel switch group (2), the number of travel switches used to calculate the inclination and the number of contacts on the moving plate (1) The same, uniform distribution, and the same position distribution.

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