CN108061541A - A kind of civil engineering level meter - Google Patents

Abstract

The invention discloses a level for civil engineering, which comprises a level body, two indicator lights are arranged on the upper end surface of the level body, and a cavity is arranged in the level along the horizontal direction inside the level body, and the cavity is a long strip structure. Steel balls are rolled in the cavity, and a metal proximity switch is respectively set at both ends of the cavity. The output end of the metal proximity switch is electrically connected to the central processing module, and the output end of the central processing module is connected to the two indicator lights. The input ends are electrically connected, and the two indicator lights are respectively located on two sides of the cavity. The invention realizes convenient and fast on-site measurement by setting an automatic control system.

Description

Level gauge for civil engineering

technical field

The invention belongs to the technical field of surveying and mapping, in particular to a level for civil engineering.

Background technique

In the field of civil engineering, a level is commonly used for leveling. The traditional level is to fill a glass tube with an appropriate amount of liquid and reserve a bubble. When the bubble is in the middle position, it proves that the position is in a horizontal state. Subjective factors and the size of the air bubbles can easily lead to measurement errors. In addition, during long-term use, the surface of the glass tube will be worn, which will cause certain obstacles to the measurement.

The patent document of notification number CN206683633U discloses a new type of level for civil engineering survey, which includes a level body, and an observation window is arranged on the level bubble of the level body; the observation window is provided with a shaft hole arranged through it, and the shaft The hole is provided with a screw that can be plugged and matched with the gap, one end of the screw is screwed to the level body, and the other end of the screw is installed with a lock nut concentric with it. This structure protects the observation window through the protective plate, but it cannot fundamentally solve the problem of measurement error, and it has a low degree of intelligence and a narrow scope of application.

The patent document with the notification number CN206683507U is a quality standard ruler for building construction, which relates to a measuring ruler. A movable auxiliary ruler is arranged at the tail of the upper surface of the main ruler, and a butterfly knob is arranged on the upper part of the rotating shaft. A protractor matching the movable auxiliary ruler is provided at the end of the ruler, a level is respectively arranged on the upper part of the main ruler and the movable auxiliary ruler, and a snap-in ruler is provided at the front of the main ruler, and the main ruler and the snap-in The ruler is respectively clamped in the slots on the two opposite surfaces of the main ruler and the clamping ruler through the inner ruler for flexible connection, and a laser light is arranged on the front part of the upper surface of the clamping ruler; the invention not only makes the reading of the angle measurement It is more accurate and effective, and it can also detect the overall level of the wall or the ground, which provides great convenience for the detection of construction projects. However, this structure does not involve the improvement of the level meter, and there is a problem of reading error.

Contents of the invention

In view of this, the purpose of the present invention is to provide a civil engineering spirit level for the deficiencies of the prior art. By rolling and setting steel balls, it can realize fast and convenient leveling with the automatic control system of metal proximity switches, central processing modules and indicator lights. The on-site level measurement has the advantages of high sensitivity and high efficiency.

To achieve the above object, the present invention adopts the following technical solutions:

A level for civil engineering, comprising a level body, two indicator lights are arranged on the upper end surface of the level body, a cavity is arranged in the level along the horizontal direction inside the level body, the cavity is a strip structure, and the cavity Steel balls are rolled inside, and a metal proximity switch is respectively set at both ends of the cavity. The output end of the metal proximity switch is electrically connected to the central processing module, and the output end of the central processing module is electrically connected to the input ends of the two indicator lights. connected, the two indicator lights are respectively located on both sides of the cavity.

Further, a signal conditioning module is provided between the metal proximity switch and the central processing module, and the signal conditioning module includes an amplification circuit module and an A/D conversion circuit module electrically connected in sequence.

Further, the cavity is provided with an observation window.

Further, it also includes a height adjustment mechanism, the height adjustment mechanism includes an upper support plate and a lower support plate, the upper end surface of the lower support plate is fixedly connected with two guide posts, and is rotatably connected with an adjustment screw rod, the upper support plate The plate is provided with two guide holes and a threaded hole, the upper end of the guide column passes through the guide hole, the adjusting screw is screwed into the threaded holes, and the level body is placed on the upper support plate.

Further, scale marks are set on the guide post.

Further, the upper end of the adjusting screw rod is provided with a turning handle.

Further, the lower end surface of the shown lower support plate is provided with running wheels.

The beneficial effects of the present invention are:

1. In the present invention, two indicator lights are arranged on the upper surface of the level body, and a cavity is arranged along the horizontal direction inside the level body. The cavity is a long strip structure, and steel balls are rolled in the cavity. Proximity switch, the output end of the metal proximity switch is electrically connected to the central processing module, the output end of the central processing module is electrically connected to the input ends of two indicator lights, and the two indicator lights are located on both sides of the cavity;

In the present invention, a steel ball and two metal proximity switches are arranged in the cavity. When the steel ball is in the middle position, the two metal proximity switches are in a disconnected state. When the steel ball rolls to a certain side, the metal proximity switch in this direction works. And transmit the signal to the central processing module, the central processing module controls the work of the indicator light at this position; on-site surveyors only need to observe the situation of the indicator light to judge whether the current position is level.

2. Due to the phenomenon of attenuation in the analog signal transmission process, the present invention arranges a signal conditioning module between the metal proximity switch and the central processing module to enhance the analog signal of the metal proximity switch, improve the intensity of signal transmission, and avoid data loss , Incomplete problems occur, and the integrity of signal acquisition and transmission is enhanced.

3. When the power supply of the electrical components is insufficient and the electrical components do not work, the problem of misjudgment of the measurement results will occur. The invention sets an observation window in the cavity. This structural design can be used as an auxiliary structure, and the staff can observe The window determines whether the position of the steel ball is consistent with the detection result.

4. The lower end of the level body is provided with a height adjustment mechanism, in which the lower end of the adjustment screw is connected to the lower support plate in rotation. The way of rotation connection can be provided with a receiving groove on the upper end of the lower supporting plate. The opening size of the receiving groove is smaller than that of the bottom of the receiving groove. Size, the lower end of the adjusting screw rod is equipped with a limit plate that matches the receiving groove, and when in use, the adjusting screw rod is rotated, and the upper support plate is assisted by the guide column to realize steady upward or downward movement, and realize the height adjustment of the level body. The present invention is applicable to the measurement of position points at different heights.

5. In the long-term use process, there is a problem of wear between the upper support plate and the guide column. The present invention sets a scale line on the guide column to facilitate monitoring whether the position of the upper support plate on the two guide columns is on the same level, reducing The factor of measurement error; in addition, the surveyor can read the current height according to the scale marks on the two guide posts.

6. A rotating handle is provided on the upper end of the adjusting screw rod. By setting the rotating handle in the present invention, the efficiency of the rotating process of the adjusting screw rod is effectively improved and the practicability of the present invention is improved.

7. Due to the need to level the walls at different positions during the actual measurement process, the present invention sets walking wheels on the lower end surface of the lower support plate, which facilitates the rapid movement of the entire device and greatly improves the structural flexibility and practicality of the present invention. sex.

Description of drawings

Fig. 1 is the structural representation of embodiment one;

Fig. 2 is a schematic diagram of the rotational connection between the adjusting screw rod and the lower support plate in Embodiment 1;

Fig. 3 is the functional block diagram of embodiment two;

Fig. 4 is the structural representation of embodiment three;

Fig. 5 is a schematic structural diagram of Embodiment 4.

Symbols in the figure: 1-level body, 2-indicator, 3-cavity, 4-observation window, 5-steel ball, 6-groove, 7-metal proximity switch, 8-central processing module, 9-upper support plate , 10-lower support plate, 11-guiding column, 12-scale line, 13-adjusting screw, 14-amplifying circuit module, 15-A/D conversion circuit module, 16-handle, 17-traveling wheel.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Embodiment one

As shown in Figures 1 and 2, the present invention includes a level body 1 and a height adjustment mechanism positioned at the lower end of the level body 1. Two indicator lights 2 are arranged on the upper surface of the level body 1, and a cavity 3 is provided in the level body 1 along the horizontal direction. , the cavity 3 is a strip-shaped structure, the cavity 3 is equipped with an observation window 4, the steel ball 5 is rolled in the cavity 3, the lower end of the cavity 3 is provided with a groove 6 matching the steel ball 5, and the two ends of the cavity 3 are respectively A metal proximity switch 7 is set, the output end of the metal proximity switch 7 is electrically connected to the central processing module 8, the output end of the central processing module 8 is electrically connected to the input ends of two indicator lights 2, and the two indicator lights 2 are respectively located in the cavity 3 It should be pointed out that the metal proximity switch 7, the central processing module 8 and the indicator light 2 are powered by a rechargeable power supply (not shown in the figure);

The height adjustment mechanism includes an upper support plate 9 and a lower support plate 10. The upper support plate 9 is provided with two guide holes and a threaded hole (not shown), and the upper end surface of the lower support plate 10 is fixedly connected with two guide columns 11, and the guide column Scale line 12 is set on 11, and an adjustment screw rod 13 is connected in rotation, the upper end of guide post 11 runs through the guide hole, and adjustment screw rod 13 is threadedly connected with the threaded hole.

In the present invention, a steel ball and two metal proximity switches are arranged in the cavity. When the steel ball is in the middle position, the two metal proximity switches are in a disconnected state. When the steel ball rolls to a certain side, the metal proximity switch in this direction works. And transmit the signal to the central processing module, the central processing module controls the work of the indicator light at this position; on-site surveyors only need to observe the situation of the indicator light to judge whether the current position is level.

Embodiment two

As shown in Figures 1 to 3, the present invention includes a level body 1 and a height adjustment mechanism located at the lower end of the level body 1, two indicator lights 2 are arranged on the upper surface of the level body 1, and a cavity 3 is provided inside the level body 1 along the horizontal direction , the cavity 3 is a strip-shaped structure, the cavity 3 is equipped with an observation window 4, the steel ball 5 is rolled in the cavity 3, the lower end of the cavity 3 is provided with a groove 6 matching the steel ball 5, and the two ends of the cavity 3 are respectively A metal proximity switch 7 is set, and the output end of the metal proximity switch 7 is electrically connected to the signal conditioning module, and the signal conditioning module includes an amplifying circuit module 14 and an A/D conversion circuit module 15 electrically connected in turn, and the output of the A/D conversion circuit module 15 The terminals are electrically connected to the central processing module 8, and the output terminals of the central processing module 8 are electrically connected to the input terminals of the two indicator lights 2, and the two indicator lights 2 are respectively located on both sides of the cavity 3;

The height adjustment mechanism comprises an upper support plate 9 and a lower support plate 10, the upper support plate 9 and the lower support plate 10 are disc structures, the upper support plate 9 is provided with two guide holes and a threaded hole, the upper end surface of the lower support plate 10 Two guiding posts 11 are fixedly connected, and a scale line 12 is set on the guiding posts 11, and an adjusting screw 13 is rotatably connected, the upper end of the guiding posts 11 runs through the guiding hole, and the adjusting screw 13 is threadedly connected with the threaded hole.

The structure of this embodiment is basically the same as that of Embodiment 1, the difference is: as shown in Figure 3, a signal conditioning module is set between the metal proximity switch 7 and the central processing module 8, and the signal conditioning module includes an amplifying circuit module 14 electrically connected in turn and A/D conversion circuit module 15.

A signal conditioning module is set between the metal proximity switch and the central processing module to enhance the analog signal of the metal proximity switch, improve the strength of signal transmission, avoid data loss and incompleteness, and enhance the integrity of signal acquisition and transmission .

Embodiment Three

As shown in Figure 4, the present invention comprises a level body 1 and a height adjustment mechanism positioned at the lower end of the level body 1, two indicator lights 2 are arranged on the upper surface of the level body 1, and a cavity 3 is provided in the level body 1 along a horizontal direction, and the cavity 3 is a long strip structure, the cavity 3 is equipped with an observation window 4, the steel ball 5 is rolled in the cavity 3, the groove 6 matching the steel ball 5 is set at the lower end of the cavity 3, and a metal The proximity switch 7, the output end of the metal proximity switch 7 is electrically connected to the central processing module 8, the output end of the central processing module 8 is electrically connected to the input ends of two indicator lights 2, and the two indicator lights 2 are respectively located on both sides of the cavity 3 ; It should be pointed out that the metal proximity switch 7, the central processing module 8 and the indicator light 2 are all powered by a rechargeable power supply (not shown in the figure);

The height adjustment mechanism includes an upper support plate 9 and a lower support plate 10. The upper support plate 9 is provided with two guide holes and a threaded hole (not shown), and the upper end surface of the lower support plate 10 is fixedly connected with two guide columns 11, and the guide column Scale line 12 is set on 11, and an adjusting screw mandrel 13 is rotatably connected, the upper end of guide post 11 runs through the guide hole, adjusting screw mandrel 13 is threadedly connected with threaded hole, and the upper end of adjusting screw mandrel 13 is provided with handle 16.

Embodiment Four

The structure of this embodiment is basically the same as that of Embodiment 3, the difference is: as shown in Figure 5, three road wheels 17 are arranged on the lower end surface of the lower support plate 10, which is convenient for the rapid movement of the whole device and greatly improves the performance of the present invention. Structural flexibility and practicality.

Finally, it is noted that the above embodiments are only used to illustrate the technical solution of the present invention without limitation, other modifications or equivalent replacements made by those skilled in the art to the technical solution of the present invention, as long as they do not depart from the spirit and spirit of the technical solution of the present invention All should be included in the scope of the claims of the present invention.

Claims (5)

1. A level for civil engineering, comprising a level body, characterized in that: the upper end surface of the level body is provided with two indicator lights, and the inside of the level body is provided with a cavity along the horizontal direction, and the cavity is a strip shape structure, steel balls are rolled in the cavity, a metal proximity switch is respectively set at both ends of the cavity, the output end of the metal proximity switch is electrically connected to the central processing module, and the output end of the central processing module is connected to two The input ends of the indicator lights are electrically connected, and the two indicator lights are respectively located on both sides of the cavity. 2. A kind of level for civil engineering according to claim 1, characterized in that: a signal conditioning module is set between the metal proximity switch and the central processing module, and the signal conditioning module includes an amplifying circuit module and an electrical connection sequentially. A/D conversion circuit module. 3. A level for civil engineering according to claim 1, characterized in that: the cavity is provided with an observation window. 4. A level for civil engineering according to claim 1, characterized in that: it also includes a height adjustment mechanism, the height adjustment mechanism includes an upper support plate and a lower support plate, and the upper end surface of the lower support plate is fixedly connected Two guide columns, and rotate to connect an adjustment screw, the upper support plate is provided with two guide holes and a threaded hole, the upper end of the guide column passes through the guide hole, the adjustment screw is threadedly connected with the threaded hole, the level The body is placed on the upper support plate. 5. A level for civil engineering according to claim 4, characterized in that: a scale line is set on the guide column.