CN210180344U

CN210180344U - Height measuring device

Info

Publication number: CN210180344U
Application number: CN201921231477.5U
Authority: CN
Inventors: Yun Cai; 蔡云
Original assignee: Shanghai Dong Pei Business Corp
Current assignee: Shanghai Dong Pei Business Corp
Priority date: 2019-07-31
Filing date: 2019-07-31
Publication date: 2020-03-24
Anticipated expiration: 2029-07-31

Abstract

The utility model provides a height measuring device, which comprises a platform for placing a measured object; a post secured vertically to the platform; displacement recording means secured to a clamp nestingly secured to the pole, the displacement recording means being for indicating its displacement on the pole; and the pressure gauge is fixed to the clamp and comprises a probe vertically projected to the upper end face of the platform. On the one hand, the pressure gauge is arranged to participate in measurement, so that errors caused by different handfeels of operators can be avoided, and on the other hand, the height measuring device does not need expensive devices such as a grating ruler and the like, so that the cost of the device is reduced.

Description

Height measuring device

Technical Field

The utility model relates to a height measuring device.

Background

At present, high-precision inch measuring instruments mainly comprise high-precision grating devices, guide rail measuring rod devices, high-speed sampling devices and the like. However, the higher the measurement accuracy requirement, the higher the cost of the instrument, and the measurement accuracy error is larger due to the multiple influences of the measurement environment, personnel and other factors.

Chinese patent CN201220054322.0 discloses a spacing height measuring device, which comprises a measuring base and a height rod, wherein the measuring base and the height rod are provided with length scales, the measuring base is provided with a groove for accommodating the height rod to slide up and down, the side of the measuring base is provided with a fixing hole for fastening screws, the fixing hole is communicated with the groove, and the height rod is arranged in the groove and fixed by the fastening screws. Although the existing document solves the problem of overhigh instrument cost, the measurement is difficult to achieve higher precision due to the difference of the hardness of different measured objects and the difference of hand feeling of different operators.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a height measuring device that the cost is lower and the precision is higher in order to overcome prior art high cost and to have the not enough defect of precision that measured object and operating personnel difference arouse.

The utility model discloses an above-mentioned technical problem is solved through following technical scheme:

a height measuring device is characterized in that the height measuring device comprises: the platform is used for placing a measured object; a post secured vertically to the platform; displacement recording means secured to a clamp nestingly secured to the pole, the displacement recording means being for indicating its displacement on the pole; and the pressure gauge is fixed to the clamp and comprises a probe vertically projected to the upper end face of the platform.

Here, the clamp may be fixed to the pole by being locked to the pole. The displacement recording means record the distance the displacement recording means itself has traveled on the mast. The pressure gauge can measure the pressure between the measured object and the probe, and an operator can observe the pressure gauge reading at the zero return position and the reading when the probe presses on the measured object, and if the readings are the same, the displacement recording device reading on the occasion is taken. Thus, errors caused by different handfeels of operators can be avoided.

Preferably, the height measuring device comprises two posts and a base fixed to the platform, the base is provided with through holes matched with the posts in shape, the posts are arranged in parallel and inserted into the through holes to be fixed to the platform.

The arrangement of the two poles can enable the structure between the clamp and the poles to be more stable.

Preferably, a rack is arranged on the rod column, and a gear meshed with the rack is arranged on the displacement recording device.

Here, the rack engages with the gear, so that on the one hand, the displacement recording device and the rod column form a stable structure with each other, and on the other hand, signals of the rotation amount of the gear can be read by the displacement recording device through a sensor and the like.

Preferably, the height measuring device further comprises a hand wheel, and the hand wheel is directly or indirectly fixed to the gear and used for controlling the rotation of the gear.

Preferably, the height measuring device further comprises a stop mechanism for directly or indirectly clamping the gear, so that the gear cannot rotate.

Preferably, the displacement recording device is provided with a display and a control panel, and the control panel is provided with a reset key for resetting the displacement data.

Preferably, the pressure gauge comprises a dial indicator for displaying the pressure born by the probe.

Preferably, the probe on the pressure gauge is replaceable.

Here, the probes of different shapes can be replaced to measure the heights or height differences of different positions of the workpiece.

Preferably, the lower end face of the platform is further spirally connected with a plurality of foot pads.

Preferably, the displacement recording device further comprises a sensor for measuring the rotation amount of the gear. The sensor may be a magnetic sensor or the like, and measures the absolute rotation angle amount of the gear.

The utility model discloses an actively advance the effect and lie in: on the one hand, the pressure gauge is arranged to participate in measurement, so that errors caused by different handfeels of operators can be avoided, and on the other hand, the height measuring device does not need expensive devices such as a grating ruler and the like, so that the cost of the device is reduced.

Drawings

Fig. 1 is a schematic structural diagram of a height measuring device according to a preferred embodiment of the present invention.

Detailed Description

The present invention will be more clearly and completely described below with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of a height measuring apparatus according to the present embodiment. As shown in fig. 1, the rock debris classifying and processing device according to the present embodiment includes: a platform 2, which may be made of marble, for placing an object to be measured; a post 6 vertically fixed to the platform 2; a displacement recording device 5, wherein the displacement recording device 5 is fixed to the clamp 4, the clamp 4 is fixed to the pole column 6 in a nesting mode, and the displacement recording device 5 is used for representing the displacement of the displacement recording device on the pole column 6; a pressure gauge 10, the pressure gauge 10 being fixed to the jig 4 and including a probe 11 projected perpendicularly to the upper end surface of the stage 2.

The platform 2 is made of marble, and the marble quality is higher, can reduce the platform and receive the influence of external vibrations.

The clamp 4 can here be fixed to the pole 6 by means of a locking to the pole 6. The displacement recording means 5 record the distance the displacement recording means 5 itself moves on the stem 6. The pressure gauge 10 can measure the pressure between the object to be measured and the probe 11, and the operator can observe the reading of the pressure gauge 10 at the zero position and the reading when the probe 11 is pressed against the object to be measured, and if the readings are the same, the displacement recording device 5 in this case can be read. Thus, errors caused by different handfeels of operators can be avoided.

The height measuring device comprises two poles 6 and a base 3 fixed to the platform 2, wherein through holes matched with the poles 6 in shape are formed in the base 3, the poles 6 are arranged in parallel, and the through holes are inserted to be fixed to the platform 2.

The arrangement of two posts 6 makes the structure between the clamp 4 and the posts 6 more stable.

The rod 6 is provided with a toothed rack 7 and the displacement recording device 5 is provided with a toothed wheel (not shown) which engages with the toothed rack 7.

Here, the rack 7 engages with the gear, on the one hand, so that the displacement recording device 5 and the rod 6 form a stable structure with each other, and on the other hand, signals of the rotation amount of the gear can be read by the displacement recording device 5 by means of a sensor or the like.

The height measuring device further comprises a hand wheel 8, and the hand wheel 8 is directly or indirectly fixed to the gear and used for controlling the rotation of the gear. In this embodiment, the handwheel 8 may be further provided with fine adjustment means. That is, the handwheel 8 may include wheels with different torques for coarse and fine adjustment.

The height measuring device further comprises a stop mechanism 9 for directly or indirectly clamping the gear wheel such that the gear wheel cannot rotate. In this embodiment, the stop mechanism 9 is disposed between the hand wheel 8 and the fixture, so that the hand wheel 8 can be tightly locked and the gear cannot rotate.

The displacement recording device 5 is provided with a display and a control panel, and the control panel is provided with a reset key for resetting the displacement data. The pressure gauge 10 comprises a dial gauge for indicating the pressure to which the probe 11 is subjected.

At the time of measurement, the operator may lower the probe 11 of the manometer 10 until touching the marble table 2, at which time the operator observes the reading on the manometer 10 as X. At the same time, a reset key on the control panel is pressed, at which time the reading of the displacement recording means 5 is reset to 0. Then, the moving displacement recording device 5 ascends along with the clamp, the workpiece to be measured is placed on the platform 2, the operator lowers the displacement recording device 5 and the pressure gauge 10, the probe 11 is placed on the workpiece, and when the reading of the pressure gauge 10 is X, the data on the display on the displacement recording device 5 are read to serve as the measured value.

The probe 11 on the pressure gauge 10 is replaceable.

Here, the different-shape probe 11 may be replaced to measure the height or height difference of the workpiece at different positions.

The lower end surface of the platform 2 is also spirally connected with a plurality of foot pads 1. In this embodiment, there are 4 foot pads 1, and the levelness of the platform 2 can be changed by adjusting the foot pads 1.

The displacement recording means 5 further comprise a sensor for measuring the rotation of the gear. The sensor may be a magnetic sensor or the like, and measures the absolute rotation angle amount of the gear.

To verify the effect of the present embodiment. The inventors conducted the following practical tests.

The inventor randomly selected member a to measure the gauge for a plurality of times, and used the height measuring device (denoted as device 100) in the present embodiment and the height measuring device (denoted as device 200) described in the background of the present application without using a pressure gauge, respectively, and measured data are as follows:

TABLE 1

Note: size accuracy of sample gauge +/-0.001 mm

The inventor randomly selects three members A, B and C to measure the height of the gauge, and the measuring instrument is the device 100 and the device 200, and the measuring data is as follows:

TABLE 2

Note: size accuracy of sample gauge +/-0.001 mm

It can be seen from two sets of tests that the repeatability error of the measured data and the data error caused by different measuring personnel can be obviously reduced through the embodiment, and the measuring precision is obviously improved.

Although particular embodiments of the present invention have been described above, it will be appreciated by those skilled in the art that these are examples only and that the scope of the present invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and the principles of the present invention, and these changes and modifications are all within the scope of the present invention.

Claims

1. A height measuring device, characterized in that it comprises:

the platform is used for placing a measured object;

a post secured vertically to the platform;

displacement recording means secured to a clamp nestingly secured to the pole, the displacement recording means being for indicating its displacement on the pole;

and the pressure gauge is fixed to the clamp and comprises a probe vertically projected to the upper end face of the platform.

2. Height measuring device according to claim 1,

said height measuring means comprising two of said posts and a base secured to said platform,

the base is provided with a through hole matched with the shape of the pole column,

the posts are arranged in parallel and inserted into the through holes to be fixed to the platform.

3. Height measuring device according to claim 2,

the displacement recording device is characterized in that a rack is arranged on the rod column, and a gear meshed with the rack is arranged on the displacement recording device.

4. Height measuring device according to claim 3,

the height measuring device also comprises a hand wheel,

the hand wheel is directly or indirectly fixed to the gear for controlling the rotation of the gear.

5. Height measuring device according to claim 4,

the height measuring device also comprises a stop mechanism,

the stop mechanism is used for directly or indirectly clamping the gear, so that the gear cannot rotate.

6. Height measuring device according to claim 1,

the displacement recording device is provided with a display and a control panel, and the control panel is provided with a reset key for resetting displacement data.

7. Height measuring device according to claim 1,

the pressure gauge comprises a dial indicator which is used for displaying the pressure born by the probe.

8. Height measuring device according to claim 1,

the probe on the pressure gauge is replaceable.

9. Height measuring device according to claim 1,

and the lower end surface of the platform is also spirally connected with a plurality of foot pads.

10. Height measuring device according to claim 3,

the displacement recording device also comprises a sensor for measuring the rotation quantity of the gear.