JP2010190640A - Inclination measuring instrument - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inclination measuring instrument that measures inclination to the vertical direction of a column, wall surface, or the like of a building, and easily performs high-grade inclination measurement in a short time without rocking a laser light emitter to minute vibration or the like. <P>SOLUTION: In the inclination measuring instrument, a telescopic column has an upper block and a lower block. The upper block is connected to an upper part of the column, and includes a light emitter for emitting a laser beam and a rocking controlling means for radiating the laser beam vertically downward. The lower block is connected to a lower part of the column and has a light receiving section, and the upper block and the lower block have an abutting section on a surface to be measured. The upper block is connected to the column via a bracket, and a case having the light emitter and the rocking controlling means is rockably held in the bracket via a shaft. The rocking controlling means includes a horizon sensor for sensing the inclination of the case, and a control section for receiving a signal of the horizon sensor and controlling the light emitter vertically downward with respect to the inclination. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a measuring instrument for measuring the inclination of an object with respect to the vertical direction, and particularly relates to an inclination measuring instrument such as a pillar or wall surface of a building.

  2. Description of the Related Art Conventionally, an inclination measuring instrument for measuring an inclination of a building column or wall surface with respect to a vertical direction has been provided. For example, a column that abuts on the object to be measured, a laser emitter that generates laser light, and an upper end of the column that are connected to the upper end of the column so that the laser emitter can be oscillated so that the laser beam is always emitted vertically downward. An inclination measuring device is known that includes a support body that is supported by a column portion and a light receiving portion that is connected to a column portion and is located below the upper block and that forms a light spot by a laser beam of a laser light emitter (for example, Patent Document 1).

  The structure in Patent Document 1 employs a gimbal structure in order to hold the laser emitter in a swingable manner. This makes it possible to measure the inclination of the measurement object more accurately without being affected by the wind during measurement because the laser beam is not exposed to the wind unlike the lower thread, compared with the case of using the lower swing. Is.

  In addition, a tilt measuring device that has a substantially similar structure and uses a roller bearing to irradiate laser light vertically downward as a replacement for the gimbal structure is also known (for example, Patent Document 2).

JP 2006-329878 A Japanese Patent Laid-Open No. 4-326209

  However, since the structures according to Patent Document 1 and Patent Document 2 employ a swingable gimbal structure or a bearing structure, the laser emitter can be shaken even by slight vibrations caused by the manual operation of the operator during measurement. It may move, and it may take a long time to perform an accurate measurement. Therefore, when measuring the vertical direction of multiple wall surfaces, the operator must always consider minute vibrations. To perform advanced measurements in a short time, the operator There is a concern that the burden of work will increase.

  Therefore, the present invention solves such a problem, and relates to an inclination measuring device for measuring the inclination of a building column or wall surface with respect to the vertical direction, and is adapted to a minute vibration or the like. However, it is an object of the present invention to provide a tilt measuring device that can perform advanced tilt measurement easily and in a short time without oscillation of the laser emitter.

  In order to solve the above problems, the tilt measuring instrument according to the first aspect of the present invention is such that the extendable column part includes an upper block and a lower block that are vertically separated, and the upper block is located above the column part. And a light emitting device that emits laser light and a swing control means that always irradiates the laser light vertically downward, and the lower block is connected to a column portion below the upper block and receives light emitted from the light emitting device. In the inclination measuring instrument that measures the inclination of the surface to be measured with respect to the vertical direction, the upper block is connected to the column part via the bracket. The case including the light emitter and the swing control means is swingably held by the bracket via the shaft. The swing control means receives a horizontal sensor for detecting the tilt of the case and a signal from the horizontal sensor. Only it is characterized in that a control unit for controlling the light emitter to the vertically downward with respect to the slope.

  In addition, the inclination measuring instrument according to the second aspect of the present invention is the inclination measuring instrument according to the first aspect, wherein the operation power source that is activated when the contact portion of the case comes into contact with the surface to be measured is provided. It is provided.

  In addition, an inclination measuring instrument according to a third aspect of the present invention is the inclination measuring instrument according to the first or second aspect, wherein the column portion is provided with means for fixing to the surface to be measured.

  In addition, the tilt measuring instrument according to claim 4 of the present invention is the tilt measuring instrument according to claim 3, wherein the fixing means is detachably installed on the column part, and the object to be measured is installed on the bracket. Are provided with an elastic member for holding the magnet and a magnet body installed on the elastic member.

In the tilt measuring instrument according to the first aspect of the present invention, when measuring the tilt of the surface to be measured, the case is swingably held by the bracket via the shaft portion, so that the contact portion is tilted. By contacting the surface to be measured, the case can contact in a state parallel to the tilt angle.
Then, the horizontal sensor senses the inclination of the case, and the control unit that receives the signal operates to control the light emitter to always irradiate the laser beam vertically downward. Thereby, an advanced inclination measurement can be performed simply and in a short time.
In addition, since the control unit controls the light emitter only with respect to the inclination, there is no possibility of swinging as in the conventional downward swing or gimbal structure due to minute vibrations or the like during work.

  In the inclination measuring instrument according to claim 2 of the present invention, since the contact portion in the case is provided with an operation power source that is activated when it contacts the surface to be measured, even in inclination measurement at a high position, It is not necessary to use a stepladder or the like, and it can be simplified.

  In the inclination measuring instrument according to claim 3 or claim 4 of the present invention, the column portion is provided with a fixing means to the measurement surface, and the fixing means is installed on the bracket and the bracket which are detachably installed on the column portion. Since it has an elastic member for holding the object to be measured and a magnet body installed on the elastic member, when the surface to be measured is an iron plate or the like, it can be adsorbed by the magnet body in the fixing means. The tilt measuring instrument can be securely fixed. Further, even when the magnet body cannot be attracted, the object to be measured can be held by using the elastic member, so that the tilt measuring instrument can be securely fixed. . Furthermore, when the surface to be measured is an iron plate or the like, the object to be measured can be held by the elastic string portion and can be adsorbed by using the magnet body together, and the effects of both can be obtained.

It is a front view of the inclination measuring device which concerns on this invention. It is a left view of the inclination measuring device which concerns on this invention. It is an expansion perspective view of the upper block of the inclination measuring device which concerns on this invention. It is an expansion perspective view which shows the rocking | fluctuation control means in a case in the inclination measuring device which concerns on this invention. FIG. 5 is an enlarged perspective view showing the swing control means in the case in the tilt measuring instrument according to the present invention as seen from a different direction from FIG. 4. FIG. 6 is an enlarged perspective view showing the swing control means in the case in the tilt measuring instrument according to the present invention as seen from a different direction from FIG. 5. FIG. 5 is a partially omitted enlarged perspective view of another specification example of FIG. 4 showing a swing control means in the case in the tilt measuring instrument according to the present invention. It is an expansion perspective view of the case bracket of another Example in the inclination measuring device which concerns on this invention.

  Hereinafter, an inclination measuring device according to an embodiment of the present invention will be described based on the drawings.

  As shown in FIGS. 1 and 2, the tilt measuring instrument 1 according to the present invention mainly includes a column body 2, an upper block 3 coupled to the upper side of the column body 2, and a lower section coupled to the lower side of the column body 2. It is constituted by block 4. Further, the upper block 3 and the lower block 4 are detachably connected to the column part 2.

  The column body 2 is composed of a plurality of stretchable bodies, and is mutually fastened by a connecting portion 6 and a connecting bracket 7. In the present embodiment, the column part 2 is composed of a storage part 2a, a first elastic body 2b, and a second elastic body 2c located below. It is only necessary that the stretchable bodies can be connected to each other. After the upper block 3 and the lower block 4 are removed, the column body 2 has another first stretchable body 2b and a second stretchable body in the storage portion 2a located below. By sliding and storing 2c, it can be made compact. The cross-sectional shape of the column part 2 is not limited to a circle, a rectangle, an ellipse, a triangle, or the like.

  As shown in FIGS. 1 and 2, the first bracket 8a and the second bracket 8c, which constitute a part of the upper block 3 and are formed in a substantially U-shape, are integrated with each other by screws 8d. The case bracket 8 is fixed. The case bracket 8 is detachably installed on the second stretchable body 2c in the column portion 2 through the fixing knob 9.

  Similarly, the light receiving portion bracket 21 constituting a part of the lower block 4 is detachably installed through the fixing knob 9, particularly in the storage portion 2 a in the column portion 2. The upper block 3 and the lower block 4 can be easily carried by removing them from the column part 2, and the attachment position to the column part 2 in the vertical direction is not a problem.

  As shown in FIG. 3, the case 3a, which is a part of the upper block 3 and is formed of a substantially rectangular parallelepiped, has a light emitter 16 that emits laser light and a swing control means that always irradiates the laser light vertically downward. On the other hand, the lower block 4 includes a light receiving unit 20 that receives light emitted from the light emitter 16.

  The case 3a is swingably held in a notch portion 8b of the first bracket 8a having an opening portion vertically upward via a disk-shaped shaft portion 3b that protrudes from both side surfaces. Thereby, when contacting with the surface to be measured, it is possible to cope with the inclination of the surface to be measured. In other words, the case 3a can swing only in the direction in which the first bracket 8a protrudes with respect to the column portion 2.

  As shown in FIGS. 1 and 3, the contact portion of the case 3 a is located on the side not facing the column portion 2, and the operation power source 3 c and the pad 3 d are provided on the surface so as to protrude. Further, the operation power source 3c protrudes slightly from the pad 3d, and the pad 3d is formed of a synthetic resin or the like and has an action of mitigating the impact with the surface to be measured. As a result, the power source of the tilt measuring instrument 1 is activated when the operating power source 3c contacts the surface to be measured. Therefore, even in the tilt measurement at a high position, it is not necessary to use a stepladder one by one and it can be simplified. These specific operations will be described later.

  Upper and lower end surfaces of the case 3a are provided with an upper lid 3f and a lower lid 3g for protecting the swing control means disposed inside the case 3a, and the lower lid 3g has a power supply unit 10 installed in the case 3a. The lid 3e is provided. Thereby, electric power means, such as a dry cell, can be exchanged from the outside.

  As shown in FIGS. 4 to 6, the swing control means may be arranged in the case 3 a and adopts an arrangement configuration that can always irradiate laser light from the light emitter 16 vertically downward. Since it is the purpose, only an example of the arrangement and the interlocking action of each part will be described.

  As shown in FIGS. 4 and 6, the power supply unit 10 is erected on the inner corner of the case 3a. The motor unit 11 is located above the case 3 a and is arranged continuously with the transmission unit 12. In addition, two limit switches 14 are installed on the outer side surface of the chassis 13 provided below the transmission unit 12. Further, a light emitter 16 is installed so as to always irradiate laser light vertically below the transmission portion 12 via a rotating shaft 15 connected to the chassis 13. Further, a horizontal sensor 17 is installed at the upper end of the light emitter 16, and an electronic circuit board 19 is installed near the power supply unit 10. These can be operated by being connected by a wiring (not shown).

  When the case 3a swings with respect to the case bracket 8 via the shaft portion 3b, the swing control means arranged in this way is a motor that serves as a control unit when the horizontal sensor 17 senses the inclination of the case 3a. The unit 11, the transmission unit 12, and the light emitter bracket 18 are operated to control the light emitter 16 to irradiate laser light vertically downward.

  Specifically, as shown in FIG. 5, the transmission unit 12 that converts the motion of the motor unit 11 into a linear motion in the vertical direction is configured so that the light emitter bracket 18 connected to the transmission unit 12 is connected in the vertical direction as indicated by an arrow P. Move to. As a result, the two upper and lower contact pins 18 a installed on the light emitter bracket 18 move the action pin 16 a in the light emitter 16 located in the gap, so that the light emitter is centered on the rotating shaft 15 in the chassis 13. 16 can be vertically controlled.

  Further, the contact piece 18b constituting a part of the light emitter bracket 18 is located in the gap between the upper and lower limit switches 14. The limit switch 14 detects a controllable angle. Specifically, when an uncontrollable angle is detected, the light emitter bracket 18 moves up and down, and the contact piece 18b contacts the limit switch 14. Thus, the motor unit 11 is stopped and the instruction can be given by a blinking operation of the laser beam or the like (not shown).

  Further, as shown in FIG. 7, the working pin 16a of the light emitter 16 and one end of the chassis 13 positioned below the working pin 16a are connected by a connecting member 25 having elasticity, so that the light emitter 16 is always connected. It can also be supported on the lower side. A spring, rubber, or the like is used for the connecting member 25 to eliminate minute play (backlash) that may occur at the time of control and to enable more advanced tilt measurement.

  The electronic circuit board 19 has a built-in servo circuit that converts it into a signal for driving the motor unit 11 based on the inclination sensed by the horizontal sensor 14.

  As shown in FIGS. 1 and 2, the lower block 4 is mainly composed of a light receiving portion 20 and a light receiving portion bracket 21, and is detachably installed in the storage portion 2 a in the column portion 2 by a fixing knob 9. The light receiving unit 20 may be a scale plate whose scale is instructed on the vertical center axis so that the vertical can be visually confirmed, and is controlled at a constant frequency in order to distinguish laser light from disturbance light. It is also possible to employ a light receiver that makes it possible to identify with a buzzer or a lamp when projected laser light is projected on the vertical center axis. These can be easily exchanged for the storage portion 2a through the light receiving portion bracket 21.

  The abutting portion of the lower block 4 with the surface to be measured is the tip portion of the light receiving portion 20, and the straight line connecting the tip portion and the pad 3 d end surface of the case 3 a is positioned in parallel with the column portion 2. I just need it. That is, the protruding dimension of the abutting portion of the upper block 3 with respect to the column portion 2 and the protruding dimension of the abutting portion of the lower block 4 with respect to the column portion 2 are substantially equal.

  As shown in FIGS. 1 and 2, the fixing means 5 includes an elastic string portion 22 made of an elastic member such as rubber, a magnet body 23, and a bracket 24, and mainly includes a storage portion 2 a in the column portion 2. It is slidably installed in the vertical direction. The two elastic string portions 22 are fixed in an annular shape by attaching both end portions to the bracket 24 via the fixing knob 9. Further, the magnet body 23 is arranged with the attracting surface facing the surface to be measured, and is connected between the two elastic string portions 22.

  When the surface to be measured is an iron plate or the like, it can be attracted by using the magnet body 23 in the fixing means, so that the inclination measuring instrument 1 can be fixed securely. Even when the magnet body 23 cannot be attracted, the object to be measured can be held by using the elastic string portion 22 formed in an annular shape. Can be ensured. Furthermore, when the surface to be measured is an iron plate or the like, the object to be measured can be held by the elastic string portion 22 and can be adsorbed together with the magnet body 23, and the effects of both can be obtained. .

  Further, as shown in FIG. 8, the case bracket 8 may be formed by connecting a first bracket 8a and a second bracket 8c formed by bending in a substantially U shape by a connecting shaft 8e. As a result, the first bracket 8a and the second bracket 8c can rotate as shown by the arrow Q about the connecting shaft 8e. Therefore, in the state where the case bracket 8 is attached to the column part 2, the first bracket 8a can be rotated, and a minute error at the time of attachment can be eliminated. The rotation angle is preferably about 2 degrees clockwise and counterclockwise with the connecting shaft 8e as the center of rotation.

  The inclination measuring device 1 configured as described above is used as follows. First, the upper block 3 and the lower block 4 are attached to the column part 2, and the lengths of the first elastic body 2b and the second elastic body 2c are adjusted so as to avoid an obstacle on the surface to be measured. Thereafter, the inclination measuring instrument 1 is fixed to the object to be measured using the elastic string portion 22 or the magnet body 23 in the fixing means 5 or both.

  In the state where the tilt measuring instrument 1 is fixed, the power source 3c for operation in the case 3a and the light receiving unit 20 in the lower block 4 abut on the surface to be measured. 16 is irradiated with laser light.

  The laser light is emitted while being controlled vertically downward by the above-described oscillation control means. Then, the object to be measured is raised vertically by irradiating the center line or the like (not shown) in the light receiving unit 20 with laser light.

  The method of use is the same regardless of whether a scale plate or a light receiver is employed for the light receiving unit 20.

As described above, according to the inclination measuring instrument 1 according to the embodiment of the present invention described above, when measuring the inclination of the surface to be measured, the case 3a is connected to the notch 8b of the case bracket 8 via the shaft 3b of the case 3a. Since the operation power supply 3c and the pad 3d, which are contact portions, are in contact with the inclined measurement surface, the case 3a can be in contact in a state parallel to the inclination angle.
Then, the horizontal sensor 17 senses the inclination of the case 3a, and the motor unit 11 and the transmission unit 12 receiving the signal operate to move the light emitter bracket 18, so that the light emitter 16 is always vertically downward. Is controlled to be irradiated with laser light. Thereby, an advanced inclination measurement can be performed simply and in a short time. Further, since the motor unit 11 and the transmission unit 12 control the light emitter 16 only with respect to the inclination, there is no possibility of swinging as in the conventional downward swing or gimbal structure due to minute vibrations during the work. .

  In addition, since a plurality of stretchable bodies are used for the column part 2 and the operation power supply 3c is installed at the contact part with the surface to be measured, it is necessary to use a stepladder or the like one by one even in the inclination measurement at a high position. It can be made simple without any problems.

  Furthermore, since the upper block 3 and the lower block 4 are detachably connected to the column portion 2 via the case bracket 8 and the light receiver bracket 21, it is easy to carry by removing each of them, and the surface to be measured Even when there are obstacles etc., measurement can be performed while avoiding them.

  Furthermore, since not only the scale plate but also various types of light receivers can be adopted via the light receiving section bracket 21, the laser light controlled at a constant frequency is used to distinguish the laser light from the disturbance light. When a light receiver that can be identified with a buzzer or lamp when projected on a line is used, the operator can measure the inclination of the surface to be measured by using an identifiable means such as a buzzer from a remote location. It can be performed.

DESCRIPTION OF SYMBOLS 1 Inclination measuring device 2 Column 2a Storage body 2b 1st expansion-contraction body 2c 2nd expansion-contraction body 3 Upper block 3a Case 3b Shaft part 3c Operation power supply 3d Pad 3e Lid 3f Upper lid 3g Lower lid 4 Lower block 5 Fixing means 6 Connection Part 7 Connection bracket 8 Case bracket 8a First bracket 8b Notch part 8c Second bracket 8d Screw 8e Connection shaft 9 Fixing knob 10 Power supply part 11 Motor part 12 Transmission part 13 Chassis 14 Limit switch 15 Rotary shaft 16 Light emitter 16a Action pin 17 Horizontal sensor 18 Light emitter bracket 18a Contact pin 18b Contact piece 19 Electronic circuit board 20 Light receiving part 21 Light receiving part bracket 22 Elastic string part 23 Magnet body 24 Bracket 25 Connecting member

Claims (4)

The extendable column part includes an upper block and a lower block that are separated in the vertical direction,
The upper block is connected to the upper part of the column, and includes a light emitter that emits laser light, and a swing control unit that always irradiates the laser light vertically downward.
The lower block is connected to a column part below the upper block, and includes a light receiving unit that receives light emitted from the light emitter.
The upper block and the lower block have contact portions with the surface to be measured,
In an inclination measuring instrument that measures the inclination of the surface to be measured relative to the vertical direction,
The upper block is connected to the pillar through a bracket,
The case including the light emitter and the swing control means is swingably held on the bracket via the shaft portion,
The swing control means comprises a horizontal sensor that senses the tilt of the case, and a controller that receives a signal from the horizontal sensor and controls the light emitter vertically downward relative to the tilt.   The inclination measuring device according to claim 1, wherein the contact portion in the case includes an operation power source that is activated when the contact portion contacts the surface to be measured.   The inclination measuring device according to claim 1, wherein the column portion is provided with means for fixing to the surface to be measured.   The inclination measuring instrument according to claim 3, wherein the fixing means includes a bracket that is detachably mounted on the column portion, an elastic member that is mounted on the bracket and holds the object to be measured, and a magnet body that is mounted on the elastic member. .

Images