CN214666525U

CN214666525U - Bridge height measuring device

Info

Publication number: CN214666525U
Application number: CN202120865143.4U
Authority: CN
Inventors: 马丽君; 王志刚; 康晓霞; 亓晓贵
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-04-26
Filing date: 2021-04-26
Publication date: 2021-11-09
Anticipated expiration: 2031-04-26

Abstract

The utility model discloses a bridge height measuring device, which comprises a handheld body, wherein a meter counting device, a reel, a pay-off shaft, a microswitch, a trigger rod and a reset spring are arranged in the handheld body; a rocker arm is arranged on the outer side of the handheld body and is connected with the reel in a torsion-resistant manner; the reel and the pay-off shaft are rotatably mounted, and the trigger rod is slidably mounted; the free end of the pull rope is wound on the pay-off shaft for a circle and then extends out of the handheld body, and the free end is connected with the plumb block; the reset spring is connected with the trigger rod. The device measures the moving distance of the plumb block by utilizing the meter counting device to obtain the height of the bridge, and simultaneously, when the plumb block is measured, once the plumb block touches the ground, the pull rope can be loosened to enable the trigger rod to move under the action of the elastic force and touch the micro switch, so that the counting is stopped immediately, the measurement result can be accurately obtained without observation, the operation is simpler, and the data is more accurate.

Description

Bridge height measuring device

Technical Field

The utility model belongs to the technical field of the bridge is built, concretely relates to bridge height measurement device.

Background

In the construction process of building the bridge, the height of the bridge needs to be measured according to actual needs, so that the whole construction quality is guaranteed. The following two main measurement methods are currently available.

One measurement mode is manual measurement, i.e. the measurement rope connected with the weight is suspended downwards to the bridge until the length of the measurement rope is measured after the measurement rope is bottomed, and the value is the height value. The measuring method has the advantages of low manufacturing cost, but has the disadvantages of inaccurate measuring precision and larger error. In addition, in the mode, two persons are required to finish the operation during measurement, one person is responsible for paying off the line to the bridge below the bridge surface, and the other person is responsible for observing whether the plumb block touches the ground or not under the bridge, so that the defect of labor waste is also caused.

Another measurement is electronic measurement, i.e. the bridge height is measured directly by electronic instruments. The measurement mode has the advantages of high measurement speed and more accurate result, and has the disadvantages of higher price and more complicated calibration work in the early stage.

In summary, the existing measurement methods are inconvenient to use, and further improvement is needed.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the bridge height measuring device has the advantages of being simple to operate, accurate in measurement and low in manufacturing cost.

The utility model discloses a realize like this: a bridge height measuring device comprises a handheld body, wherein a metering device, a reel, a pay-off shaft, a microswitch, a trigger rod and a reset spring are arranged in the handheld body; a rocker arm is arranged on the outer side of the handheld body and is connected with a winding wheel in a torsion-resistant manner;

the reel and the pay-off shaft are rotatably mounted, and the trigger rod is slidably mounted; a pull rope is wound on the winding wheel, the free end of the pull rope is wound on the pay-off shaft for a circle and then extends out of the handheld body, and the free end is connected with a plumb block; the reset spring is connected with the trigger rod;

when the pull rope is in a stretched state, the trigger rod is far away from the micro switch under the stretching action of the pull rope;

when the pull rope is in a relaxed state, the trigger rod approaches to and triggers the microswitch under the action of the elastic force of the reset spring;

the length counting device can display the moving distance of the plumb block according to the rotating number of turns of the pay-off shaft, and can pause after the micro switch is triggered.

Further, the hand-held body comprises a shell and a cover plate; the bottom of the shell is provided with a seam, and the cover plate is installed at an opening on one side of the shell through screws.

Further, a sponge strip is arranged at the seam outlet.

Furthermore, the shell is internally provided with a containing part, the trigger rod is slidably mounted in the containing part, one end of the return spring is abutted to the containing part, and the other end of the return spring is abutted to the trigger rod.

Furthermore, a wire guide shaft is arranged in the shell, and the pull rope is guided by the wire guide shaft and then vertically extends out of the thread outlet seam.

Further, a hand grip is arranged on the outer side of the top of the shell.

Further, a ratchet mechanism is arranged in the shell, a ratchet wheel of the ratchet mechanism is installed on the pay-off shaft, a pawl is installed in the shell and provided with an operation portion extending out of the shell, and the pawl is abutted to a tooth groove in the ratchet wheel.

Further, the meter counting device comprises a controller, a sensor, a battery and a coded disc; the controller comprises a display module, a control module, a reset key and a main switch; the coded disc is installed on the pay-off shaft and triggers the sensor to generate an electric signal when rotating, the control module can convert the electric signal into distance data, the display module can display the distance data, the main switch can be switched on or switched off the control circuit, the reset key can enable the display module to be reset, and the battery supplies power for the meter counting device.

Further, be provided with the installing frame on the apron, display module, reset key and master switch set up in the installing frame.

Further, a handle is installed at the outer end of the rocker arm.

The utility model discloses the beneficial effect who brings is:

1. the device measures the moving distance of the plumb block by utilizing the meter counting device to obtain the height of the bridge, and simultaneously, when the plumb block is measured, once the plumb block touches the ground, the pull rope can be loosened to enable the trigger rod to move under the action of the elastic force and touch the micro switch, so that the counting is stopped immediately, the measurement result can be accurately obtained without observation, the operation is simpler, and the data is more accurate.

2. The electronic devices in the device are low in manufacturing cost and can be obtained by purchasing, so that the manufacturing cost is reduced, and the device is convenient to popularize and use; the device has small and exquisite integral structure and is easy to carry.

Drawings

FIG. 1 is a perspective view of a preferred embodiment of the present invention;

FIG. 2 is a perspective view of the internal structure of the embodiment shown in FIG. 1;

FIG. 3 is an enlarged view of a portion of FIG. 2 at I;

FIG. 4 is a front view of the structure of the embodiment shown in FIG. 2;

FIG. 5 is a sectional view of the structure taken along line A-A in FIG. 4;

fig. 6 is a block diagram of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

As shown in fig. 1 to 6, a bridge height measuring device comprises a handheld body, wherein a metering device, a reel 4, a pay-off shaft 5, a microswitch 10, a trigger rod 11 and a return spring are arranged in the handheld body; the rocker 14 is arranged on the outer side of the hand-held body, and the rocker 14 is connected with the reel 4 in a torsion-proof manner. The axle of the reel 4 is provided with a hexagonal socket 401, and correspondingly the shaft of the swing arm 14 is provided with a hexagonal prism, whereby the insertion of the hexagonal socket results in a torque-resistant connection.

The reel 4 and the payout shaft 5 are both rotatably mounted in the hand-held body by bearings. Wherein the reel 4 is located at the center of gravity, and the payout shaft 5 is located below the reel 4. The trigger lever 11 is slidably mounted in the hand-held body. The reel 4 is wound with a pull rope 6, the free end of the pull rope 6 is wound on the pay-off shaft 5 for one circle and then extends out of the handheld body, and the free end is connected with a plumb block 7; the reset spring is connected with the trigger rod 11, and the trigger rod 11 has a reset trend under the elastic force action of the reset spring.

When the pull rope 6 is in a stretched state, the trigger rod 11 is far away from the micro switch 10 under the stretching action of the pull rope 6. The pulling force of the pull cord 6 by the pull of the tab 7 is larger than the elastic force of the return spring, and the trigger lever 11 is moved away from the microswitch 10.

When the pull rope 6 is in a relaxed state, the trigger rod 11 approaches and triggers the micro switch 10 under the elastic force of the return spring.

The meter counting device can display the moving distance of the plumb bob 7 according to the rotating number of turns of the paying-off shaft 5, and can also pause after the micro switch 10 is triggered.

As shown in fig. 1 and 2, in an alternative embodiment, the hand-held body comprises a housing 1 and a cover 2; the bottom of the shell 1 is provided with a seam 102, and the cover plate 2 is mounted at an opening at one side of the shell 1 through screws. In order to facilitate the quick connection between the cover plate 2 and the housing 1, the wire outlet seam 102 extends to an opening of the housing 1, and a positioning block 201 corresponding to the wire outlet seam 102 is arranged on the cover plate 2. When the two are connected, the positioning block 201 is inserted into the seam 102 to align the housing 1 and the cover plate 2, and then the two are fixed by screws.

In an alternative embodiment, shown in fig. 3, a sponge strip 13 is provided at the outlet seam 102. The function of the sponge strip 13 is to prevent the string 6 from rubbing out of the slit 102 when moving, and thereby causing wear. It should be noted that the gap between the sponge strips 13 is smaller than the diameter of the pull cord 6.

In an alternative embodiment, as shown in fig. 3, a receiving portion 103 is provided in the housing 1, the trigger lever 11 is slidably mounted in the receiving portion 103, and one end of the return spring abuts against the receiving portion 103 and the other end abuts against the trigger lever 11. The trigger lever 11 may be horizontally disposed with the micro switch 10 disposed opposite thereto.

In an alternative embodiment, as shown in fig. 3 and 4, a wire guide shaft 12 is provided in the housing 1, and the pull cord 6 is guided by the wire guide shaft 12 and then extends perpendicularly from the outlet slot 102.

In an alternative embodiment, as shown in fig. 1, a hand grip 101 is provided on the top outer side of the housing 1 to facilitate the hand to grip and fix.

In an alternative embodiment, a ratchet mechanism is further arranged in the housing 1, a ratchet wheel of the ratchet mechanism is mounted on the pay-off shaft 5, a pawl is mounted in the housing 1 and provided with an operating part extending out of the housing 1, and the pawl is abutted with a tooth socket on the ratchet wheel. The ratchet mechanism has a self-locking function, and can prevent the paying-off shaft 5 from rotating reversely to influence the accuracy of a measuring result during measurement.

In an alternative embodiment, shown in figure 6, the metering device comprises a controller 3, a sensor 8, a battery and a code wheel 9; the controller 3 includes a display module 301, a control module, a reset key 302, and a main switch 303. Code wheel 9 installs on paying out shaft 5 and triggers sensor 8 when rotatory and produce the signal of telecommunication, and control module can change the signal of telecommunication into distance data, and display module 301 can show distance data, and master switch 303 can switch on or cut off control circuit, and reset key 302 can make display module 301 zero clearing, and the battery is the meter rice device power supply. The model of the control module is STC89C52RC, the sensor 8 is a groove-shaped optical coupling type photoelectric sensor, the model is ITR9606, and the model of the display module 301 is LCD 1602A. The microswitch 10 is connected to the control circuit, and when the microswitch 10 is triggered, the operating circuit of the sensor 8 is cut off to stop the operation.

In an alternative embodiment, as shown in fig. 1, a mounting frame is provided on the cover plate 2, and the display module 301, the reset key 302 and the main switch 303 are provided in the mounting frame.

In an alternative embodiment, shown in figures 1 and 5, the outer end of the swing arm 14 is fitted with a handle 15.

When the device is used, the gripper 101 is gripped by one hand and the device is fixed at the adaptive position, then the main switch 303 is opened, and the reset key 302 is pressed to clear the display module 301. Then, the other hand shakes the handle 15 to slowly put down the plumb block 7, and the pull rope 6 drives the pay-off shaft 5 to rotate along with the descending of the plumb block 7, so that the coded disc 9 triggers the sensor 8 to generate an electric signal, and then the real-time moving distance is obtained through conversion in the control module and displayed on the display module 301. When the plumb block 7 touches the ground, the tension of the pull rope 6 is instantly reduced and loosened, at this time, the elastic force of the return spring applied to the trigger lever 11 is greater than the pressure of the pull rope 6, so as to move towards the direction of the micro switch 10 and press the micro switch 10 to generate an electric signal, at this time, the control circuit of the sensor 8 is cut off and does not generate an electric signal any more, the number on the display module 301 does not change any more, and the number is the measured value. Through the cooperation of micro-gap switch 10 and trigger bar 11, realize automatic detection of touching to the ground, need not the position of human eye observation plumb bob 7, improved the convenience of measurement greatly.

The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. A bridge height measuring device is characterized by comprising a handheld body, wherein a metering device, a reel (4), a pay-off shaft (5), a microswitch (10), a trigger rod (11) and a return spring are arranged in the handheld body; a rocker arm (14) is arranged on the outer side of the handheld body, and the rocker arm (14) is connected with a reel (4) in a torsion-proof manner;

the reel (4) and the pay-off shaft (5) are rotatably mounted, and the trigger rod (11) is slidably mounted; a pull rope (6) is wound on the reel (4), the free end of the pull rope (6) is wound on the pay-off shaft (5) for one circle and then extends out of the handheld body, and a plumb block (7) is connected to the free end; the return spring is connected with the trigger rod (11);

when the pull rope (6) is in a stretched state, the trigger rod (11) is far away from the microswitch (10) under the stretching action of the pull rope (6);

when the pull rope (6) is in a relaxed state, the trigger rod (11) approaches to and triggers the micro switch (10) under the elastic force action of the return spring;

the length counting device can display the moving distance of the plumb block (7) according to the rotating number of turns of the pay-off shaft (5), and can also pause after the micro switch (10) is triggered.

2. A bridge height measuring device according to claim 1, wherein the hand-held body comprises a housing (1) and a cover plate (2); the bottom of the shell (1) is provided with a seam (102), and the cover plate (2) is installed at an opening on one side of the shell (1) through screws.

3. A bridge height measuring device according to claim 2, wherein a sponge strip (13) is arranged at the seam (102).

4. A bridge height measuring device according to claim 2, wherein a receiving portion (103) is provided in the housing (1), the trigger lever (11) is slidably mounted in the receiving portion (103), and one end of the return spring abuts against the receiving portion (103) and the other end abuts against the trigger lever (11).

5. A bridge height measuring device according to claim 2, wherein a wire guiding shaft (12) is arranged in the housing (1), and the pulling rope (6) is guided by the wire guiding shaft (12) and then vertically extends out of the wire outlet seam (102).

6. A bridge height measuring device according to claim 2, characterized in that the top outer side of the housing (1) is provided with a gripper (101).

7. The bridge height measuring device according to claim 2, wherein a ratchet mechanism is further arranged in the housing (1), a ratchet wheel of the ratchet mechanism is mounted on the pay-off shaft (5), a pawl is mounted in the housing (1) and has an operating part extending out of the housing (1), and the pawl abuts against a tooth socket on the ratchet wheel.

8. A bridge height measuring device according to claim 2, wherein the meter measuring device comprises a controller (3), a sensor (8), a battery and a code disc (9); the controller (3) comprises a display module (301), a control module, a reset key (302) and a master switch (303); code wheel (9) are installed on paying out shaft (5) and trigger when rotatory sensor (8) produce the signal of telecommunication, control module can with the signal of telecommunication changes into distance data, display module (301) can show distance data, master switch (303) can switch on or cut off control circuit, reset key (302) can make display module (301) zero clearing, the battery is the meter device power supply.

9. A bridge height measuring device according to claim 8, wherein a mounting frame is arranged on the cover plate (2), and the display module (301), the reset key (302) and the main switch (303) are arranged in the mounting frame.

10. A bridge height measuring device according to claim 1, wherein the outer end of the rocker arm (14) is fitted with a handle (15).