CN212779237U - Prism foot rest for detecting wharf front edge line - Google Patents
Prism foot rest for detecting wharf front edge line Download PDFInfo
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- CN212779237U CN212779237U CN202021492044.8U CN202021492044U CN212779237U CN 212779237 U CN212779237 U CN 212779237U CN 202021492044 U CN202021492044 U CN 202021492044U CN 212779237 U CN212779237 U CN 212779237U
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Abstract
The utility model discloses a prism foot rest for detecting the front edge line of a wharf, which comprises a base rod, a guide mechanism and a positioning mechanism; the positioning mechanism is horizontally connected to the base rod in a sliding manner through the guide mechanism; the positioning mechanism comprises a prism base and a laser indicator; the laser indicator emits laser rays perpendicular to the ground and forms light spots on the ground or the surface of an obstacle; the geometric center point of the prism base is positioned on the reverse extension line of the laser ray emitted by the laser indicator. The cold static foot rest is simple in structure and easy to operate, and can be applied to measurement work which is not beneficial to positioning and calibrating an observation point due to rugged terrain. When providing stable support for the prism base, can also carry out accurate correction. The measurement accuracy is greatly improved.
Description
Technical Field
The utility model belongs to the technical field of the pier is measured, especially, relate to a pier frontier line detects uses prism foot rest.
Background
The boundary line between the wharf front line, i.e. the wharf front edge, and the water area is the boundary line between the ship and the berth. Parameters such as the smoothness and the total length of the front line of the wharf are often used as important indexes for judging the scale of the port. In the physical verification detection of the newly-built wharf, the detection of the wharf frontline is one of the important parameters of the detection of the whole wharf dimension, and 4.2.0.1 in the inspection Standard for quality of Water transportation engineering (JTS257-2008) correspondingly stipulates the allowable deviation ranges of the flatness of the wharf frontline and the length of the wharf frontline (total length of the wharf). Accurate measurement of the line ahead of the wharf can provide important basis for quality acceptance of wharf structure entities.
The optical measurement is generally performed along the front line of the wharf by using a prism with a foot rest. The common prism foot rest is a prism tripod with a support, the centering rod is placed at the front edge line position of the wharf during detection, and the centering rod can be measured after being in an absolute vertical state through fixing of the rest two supports and adjusting of a knob.
In the actual detection process, the breast wall for protection is arranged at the front edge of the wharf, and the outer edge of the top end of the breast wall is of an arc-shaped structure, so that the existing prism tripod is difficult to stably erect on the top surface of the breast wall, and the centering rod and the prism are difficult to ensure to be erected above the front line of the wharf; in addition, when the length of the line at the front edge of the wharf is determined by measuring the coordinates of the corner points of the wharf, the existing prism foot stool is difficult to accurately position at the damaged corner points because the position of the corner points is easy to damage.
In summary, it is very important how to stably and accurately erect the prism for optically detecting the front line of the wharf above the front line of the wharf.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a to the stable region on the pier is fixed to the base rod replaces the tripod, and rethread guiding mechanism stretches out positioning mechanism to the top along the line before the pier to replace the centering rod with laser irradiation's mode and carry out the accurate positioning. The problem that a prism is difficult to erect by a tripod to measure on the front line of the wharf is solved.
The utility model discloses a realize through following technical scheme:
a prism foot rest for detecting a wharf frontier line comprises a base rod, a guide mechanism and a positioning mechanism; the positioning mechanism is horizontally connected to the base rod in a sliding manner through the guide mechanism; the positioning mechanism comprises a prism base and a laser indicator; the laser indicator emits laser rays perpendicular to the ground and forms light spots on the ground or the surface of an obstacle; the geometric center point of the prism base is positioned on the reverse extension line of the laser ray emitted by the laser indicator.
By the proposal, the utility model discloses at least, obtain following technological effect:
the base rod is used as a fixed foundation of the foot rest and is installed at a stable position on the inner side of a chest wall of the wharf, the guide mechanism can extend out of the chest cavity of the wharf, and the positioning mechanism is horizontally conveyed to the position right above the front line of the wharf. The prism base is used for installing the prism and measuring the front line of the wharf, the position of the prism base can be accurately positioned, the prism is prevented from deviating from the front line of the wharf to cause deviation of a measuring result, the laser indicator is arranged below the prism base, a laser ray emitted by the laser indicator irradiates the wharf surface or an obstacle on the wharf surface to form a light spot, the light spot is a projection point of the geometric center of the prism base, the light spot is positioned at the position of the front line of the wharf, and the purpose that the geometric center of the prism base is aligned and positioned above the front line of the wharf can be achieved.
This prism foot rest replaces traditional entity centering rod contact location through laser positioning's mode, can accomplish the calibration location to the prism base in the unevenness position that is difficult to stably support the centering rod, reduces prism measurement's deviation.
Preferably, the guide mechanism comprises a sliding component and an adjusting component; the sliding assembly comprises a track groove arranged on the base rod and a guide rail horizontally sliding in the track groove; the positioning mechanism is arranged on the guide rail; the adjusting component is connected to the track groove and matched with the guide rail to control the sliding distance of the guide rail.
The guide mechanism is divided into two parts of a sliding assembly and an adjusting assembly, wherein a track groove of the sliding assembly is fixedly arranged on the base rod and is used as a support combination and a limiting structure, the guide rail horizontally moves in the track groove to realize the effect of horizontal telescopic motion, and the prism base and the laser indicator are both arranged on the guide rail and change positions along with the telescopic motion of the guide rail. The adjusting assembly is used for driving the guide rail in the sliding assembly to perform telescopic movement so as to change the positions of the prism base and the laser pointer.
Preferably, the adjusting component comprises a speed change gear set, a fine adjusting knob and a coarse adjusting knob; the guide rail is provided with a tooth socket meshed with the speed change gear set, and the tooth socket is arranged along the length direction of the guide rail; the fine adjustment knob is connected with the high-speed end of the speed change gear set; the coarse adjustment knob is connected with the low-speed end of the speed change gear set.
When the position of the prism base is adjusted in a large range, the requirement on precision is low, and in order to accelerate the moving speed of the prism base and the laser indicator on the guide rail, the adjusting assembly needs to drive the guide rail efficiently. After the position of the prism base is close to the target area, the transmission ratio of the movement of the guide rail driven by the adjusting component needs to be adjusted in order to facilitate position fine adjustment operation in a small range, so that when the guide rail is driven by the adjusting component, the displacement generated by the guide rail is smaller, and the precision is higher.
In order to achieve the purpose, the adjusting assembly adopts a speed change gear set as a core component for changing the transmission ratio and adjusting the driving efficiency. After the speed change gear set is meshed with a tooth socket on the guide rail to establish transmission connection, the coarse adjustment knob is operated to input power from a low-speed end in the speed change gear set, the transmission ratio output from the adjustment assembly to the guide rail is higher, the coarse adjustment knob is operated once to enable the displacement distance of the guide rail to be larger, and large-range transfer movement is facilitated. The fine adjustment knob is operated to input power from a high-speed end in the speed change gear set, the transmission ratio of the output of the adjusting assembly to the guide rail is low, the fine adjustment knob is operated once to enable the displacement distance of the guide rail to be small, and the precision is convenient to control.
Preferably, the transmission gear set is disposed inside the track groove; the high-speed end and the low-speed end of the speed change gear set are rotatably connected to two opposite side walls of the track groove through a first connecting shaft and a second connecting shaft respectively.
The track groove can be used as a mounting and supporting structure of the speed change gear set to keep the relative position of the speed change gear set fixed, and only the guide rail moves when the guide rail and the speed change gear set are meshed with each other to move relatively.
Meanwhile, the track groove can be used as a protective shell of the speed change gear, so that the effect of shielding dust to avoid the phenomenon of tooth clamping in the speed change gear set is achieved, wind and rain can be shielded, the corrosion and the weathering loss of the external environment to the speed change gear set are reduced, and the service life of the speed change gear set is prolonged.
Preferably, the fine adjustment knob is arranged outside the track groove; one end of the first connecting shaft, which protrudes out of the outer surface of the side wall of the track groove, is fixedly connected with the central point of the fine adjustment knob.
Preferably, the coarse adjustment knob is arranged outside the track groove; one end of the second connecting shaft, which protrudes out of the outer surface of the side wall of the track groove, is fixedly connected with the central point of the coarse adjustment knob.
For the convenience to shift on a large scale and control with the accurate positioning of minim scope to the guide rail, all set up fine setting knob and coarse adjusting knob in the outside of track groove, avoid because of the operation inconvenience that shelters from of track groove and lead to.
Preferably, a level gauge is installed on the guide rail; the level gauge is a level bubble; the level bubble is fixedly arranged on the top surface of the guide rail.
Because the prism base and the laser indicator are both arranged on the guide rail, if the guide rail deflects, the positioning effect of the laser indicator and the prism base is influenced, and errors are generated when the prism arranged on the prism base is used for measurement. Therefore, a level meter needs to be arranged to observe the horizontal state of the guide rail in real time. In order to save cost and simplify the structure of the prism foot rest, the weight of the prism foot rest is reduced. The level gauge is a level bubble which is small in structure, light and convenient to observe. The air level is horizontally arranged on the top plane of the guide rail, and whether the guide rail is horizontal or not or whether the guide rail exceeds a horizontal error range is judged by observing the condition that air bubbles in the air level deviate from a central area.
Preferably, arc-shaped convex blocks are arranged on two inner side walls of the track groove; a sliding groove is formed in the surface of the guide rail corresponding to the arc-shaped bump; the length direction of the sliding groove is parallel to the central axis of the guide rail; the arc-shaped convex block is embedded in the sliding groove in a sliding mode to limit the sliding direction of the guide rail.
In order to prevent the guide rail from laterally falling off from the notch of the track groove, an arc-shaped convex block for limiting is arranged in the track groove, and a sliding groove is arranged on the surface of the guide rail at a position corresponding to the arc-shaped convex block; when the guide rail performs telescopic motion in the rail groove along the length direction of the guide rail, the arc-shaped convex block slides in the sliding groove. When the guide rail is subjected to external force applied laterally to generate displacement perpendicular to the central axis direction of the guide rail, the arc-shaped convex block is abutted against the inner wall of the sliding groove, the movement trend of the guide rail moving towards the lateral direction is limited, and the guide rail is prevented from falling off from the rail groove.
Preferably, a groove is formed in the rod body of the base rod; one end of the groove is communicated with one end of the track groove, so that the guide rail sequentially penetrates through the groove and the track groove and is arranged in a sliding mode.
In order to avoid the long extension of the guide rail, the contact area between the rail groove and the guide rail is small, and the support area is insufficient, so that the far end of the guide rail shakes. Offer the recess on the body of rod of base rod and communicate with the track groove, make the track pass two groove structures in proper order for the guide rail contacts with track groove and recess respectively, increases the support area to the guide rail, strengthens the stability of guide rail, reduces the range of rocking of guide rail distal end.
Preferably, the positioning mechanism further comprises an auxiliary link; the auxiliary connecting rod is vertically connected with the guide rail, the top end of the auxiliary connecting rod is fixedly connected with the prism base, and the bottom end of the auxiliary connecting rod is provided with a tabling groove for tabling and fixing the laser indicator.
When the measurement is carried out through the prism, the height of the prism needs to meet the requirement required by the measurement. Therefore, the auxiliary connecting rod is additionally arranged to be used as a medium for connecting the prism base and the guide rail, and the auxiliary connecting rod is vertically connected with the guide rail for ensuring the effect that the prism base is perpendicular to the horizontal guide rail. Meanwhile, in order that the laser indicator can be stably installed and the linear corresponding position of the laser indicator and the geometric center point of the prism base is kept unchanged, the bottom end of the auxiliary connecting rod is provided with a tabling groove for installing the laser indicator.
The utility model has the advantages that: the cold static foot rest is simple in structure and easy to operate, and can be applied to measurement work which is not beneficial to positioning and calibrating an observation point due to rugged terrain. When providing stable support for the prism base, can also carry out accurate correction. The measurement accuracy is greatly improved.
Drawings
Fig. 1 is a schematic view of an overall structure of a prism foot rest for line inspection in front of a wharf according to an embodiment of the present invention.
Fig. 2 is a schematic structural view of a connection portion between the guide mechanism and the base rod according to an embodiment of the present invention.
Fig. 3 is a schematic cross-sectional view of a guiding mechanism according to an embodiment of the present invention.
Legend:
1, a base rod; 2, a guide mechanism; 3, a positioning mechanism; 4, a level bubble;
11, grooves;
21 a track groove; 22 a guide rail; 23 a speed change gear set; 24 fine adjustment knobs; 25 coarse adjustment knob
31 a prism base; 32 a laser pointer; 33 an auxiliary link;
211 an arc-shaped bump;
221 a tooth groove; 222, a chute;
231 a first connecting shaft; 232 second connecting shaft.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
Example 1:
as shown in fig. 1 to 3, a prism foot rest for detecting a wharf front line includes a base rod 1 inserted and fixed on the ground inside a wharf front breast wall, a track groove 21 fixedly installed on a rod body of the base rod 1, a guide rail 22 horizontally slidably installed in the track groove 21, an auxiliary link 33 vertically installed on the guide rail 22, a prism base 31 installed on the top end of the auxiliary link 33, and a laser pointer 32 installed on the bottom end of the auxiliary link 33; the geometric center point of the prism base 31 is located on the reverse extension line of the laser ray emitted from the laser pointer 32.
After the base rod 1 is fixed, the positions of the laser indicator 32 and the prism base 31 are changed by the telescopic sliding of the guide rail 22 in the groove of the guide rail 22, the prism base 31 is used for installing a prism for measurement, the projection of the geometric center of the prism base 31 on the horizontal ground is positioned and marked by laser emitted by the laser indicator 32, and a measurer can calibrate and adjust the position of the geometric center point of the prism base 31 by observing and calibrating the position of a light spot formed by laser irradiation. So that the prism foot rest can be erected above the rugged measuring point to carry out measurement by the prism measuring device.
The surface of the guide rail 22 facing the bottom side of the track groove 21 is provided with a tooth groove 221; a speed change gear set 23 is mounted in the track groove 21 in a shaft connection manner; the gear change set 23 is engaged with the tooth groove 221 for driving the horizontal sliding displacement of the guide rail 22; the high speed end of the speed change gear group 23 is connected to the fine adjustment knob 24 outside the track groove 21 through the first connection shaft 231, and the low speed end thereof is connected to the rough adjustment knob 25 outside the track groove 21 through the second connection shaft 232.
When the fine adjustment knob 24 is operated to input the rotary power to the high-speed end, the displacement of the guide rail 22 is smaller through the conversion adjustment of the speed change gear set 23, so that the control precision is convenient; when the coarse adjustment knob 25 is operated to input the rotary power to the low-speed end, the displacement of the guide rail 22 is increased through the switching adjustment of the speed change gear set 23, thereby facilitating the rapid and large-scale transfer.
The leveling bubble 4 is installed on the top surface of the guide rail 22, so that the guide rail 22 can be adjusted at any time to keep a horizontal state.
Example 2:
as shown in fig. 1 to 3, in addition to embodiment 1, in order to avoid the problem that the guide rail 22 falls off or the distal end of the guide rail 22 shakes due to poor fitting stability of the guide rail 22 and the track groove 21, the fitting structure of the guide rail 22 and the track groove 21 and the fitting structure of the base rod 1 and the guide rail 22 are improved. The specific scheme is as follows:
an arc-shaped convex block 211 for limiting is arranged in the track groove 21, and a sliding groove 222 is arranged on the surface of the guide rail 22 corresponding to the arc-shaped convex block 211; when the guide rail 22 performs a telescopic motion in the rail groove 21 along the length direction thereof, the arc-shaped protrusion 211 slides in the slide groove 222. When the guide rail 22 is subjected to a laterally applied external force to displace in a direction perpendicular to the central axis thereof, the arc-shaped protrusion 211 abuts against the inner wall of the sliding groove 222, so as to limit the movement tendency of the guide rail 22 to displace laterally and prevent the guide rail 22 from falling off from the track groove 21.
Example 3:
as shown in fig. 1 to 3, on the basis of not changing embodiment 1 or embodiment 2, there is also provided a method for using the prism foot rest as follows:
after a measuring point or an angular point along the line in front of the wharf is selected, a fixed base rod 1 is erected at a flat position which keeps a certain distance from the measuring point, the base rod 1 is rotated to enable the extension line of the guide rail 22 to be perpendicular to the front line of the wharf, the air bubbles in the air level bubble 4 on the guide rail 22 are centered, and the horizontal state of the guide rail 22 is kept.
The laser pointer 32 embedded in the bottom fitting groove of the auxiliary link 33 is turned on so that the laser pointer 32 forms a spot on the edge ground of the quay.
When the rough adjusting knob 25 is rotated, the rotary motion effect is inputted from the low speed end and is converted into the motion effect of driving the guide rail 22 to extend towards the direction of the wharf front line through the meshing connection relationship of the speed change gear group 23 and the tooth grooves 221, and the light spot moves towards the preselected measuring point on the wharf front line along with the extending motion of the guide rail 22. The low speed end has a relatively high transmission ratio, and the guide rail 22 is displaced by a relatively large amount each time the jog dial 25 is rotated, thereby facilitating a large-scale quick movement.
When the light spot approaches the area of the measuring point, the rotation of the coarse adjustment knob 25 is stopped, the fine adjustment knob 24 is rotated, the rotation motion effect is input from the high-speed end and is converted into the motion effect of driving the guide rail 22 to slowly move in the area near the measuring point through the meshing connection relationship of the speed change gear and the tooth groove 221, and the light spot slowly approaches the measuring point along with the slow movement of the guide rail 22. The transmission ratio at the high-speed end is low, and the displacement of the guide rail 22 is small when the fine adjustment knob 24 is rotated every time, so that the displacement calibration with high precision in a small range is facilitated.
Until the light spot is completely coincided with the selected measuring point, the positioning of the prism base 31 is completed. The prism is arranged on the prism base 31, so that the front line of the wharf can be measured.
Various technical features in the above embodiments may be arbitrarily combined as long as there is no conflict or contradiction in the combination between the features, but is limited to the space and is not described one by one.
The present invention is not limited to the above embodiment, and various modifications and variations of the present invention are intended to be included within the scope of the claims and the equivalent technology if they do not depart from the spirit and scope of the present invention.
Claims (10)
1. The utility model provides a pier leading edge line detects uses prism foot rest which characterized in that: comprises a base rod, a guide mechanism and a positioning mechanism; the positioning mechanism is horizontally connected to the base rod in a sliding manner through the guide mechanism; the positioning mechanism comprises a prism base and a laser indicator; the laser indicator emits laser rays perpendicular to the ground and forms light spots on the ground or the surface of an obstacle; the geometric center point of the prism base is positioned on the reverse extension line of the laser ray emitted by the laser indicator.
2. The pier leading line detecting prism foot rest according to claim 1, wherein the guide mechanism comprises a sliding assembly and an adjusting assembly; the sliding assembly comprises a track groove arranged on the base rod and a guide rail horizontally sliding in the track groove; the positioning mechanism is arranged on the guide rail; the adjusting component is connected to the track groove and matched with the guide rail to control the sliding distance of the guide rail.
3. The prism foot rest for the detection of the wharf front edge line of claim 2, wherein the adjusting component comprises a speed change gear set, a fine adjusting knob and a coarse adjusting knob; the guide rail is provided with a tooth socket meshed with the speed change gear set, and the tooth socket is arranged along the length direction of the guide rail; the fine adjustment knob is connected with the high-speed end of the speed change gear set; the coarse adjustment knob is connected with the low-speed end of the speed change gear set.
4. The prism foot stool for line inspection before wharf according to claim 3, wherein the speed change gear set is disposed inside the rail groove; the high-speed end and the low-speed end of the speed change gear set are rotatably connected to two opposite side walls of the track groove through a first connecting shaft and a second connecting shaft respectively.
5. The prism foot rest for line inspection along the fore-wharf according to claim 4, wherein the fine adjustment knob is disposed outside the track groove; one end of the first connecting shaft, which protrudes out of the outer surface of the side wall of the track groove, is fixedly connected with the central point of the fine adjustment knob.
6. The pre-dock line inspection prism foot rest of claim 4, wherein the coarse adjustment knob is disposed outside the track groove; one end of the second connecting shaft, which protrudes out of the outer surface of the side wall of the track groove, is fixedly connected with the central point of the coarse adjustment knob.
7. The prism foot rest for detecting the wharf front edge line according to claim 2, wherein a level is mounted on the guide rail; the level gauge is a level bubble; the level bubble is fixedly arranged on the top surface of the guide rail.
8. The prism foot rest for detecting the wharf front edge line according to claim 2, wherein arc-shaped convex blocks are arranged on two inner side walls of the track groove; a sliding groove is formed in the surface of the guide rail corresponding to the arc-shaped bump; the length direction of the sliding groove is parallel to the central axis of the guide rail; the arc-shaped convex block is embedded in the sliding groove in a sliding mode to limit the sliding direction of the guide rail.
9. The prism foot rest for detecting the wharf front edge line according to claim 2, wherein a groove is formed in a rod body of the base rod; one end of the groove is communicated with one end of the track groove, so that the guide rail sequentially penetrates through the groove and the track groove and is arranged in a sliding mode.
10. The quay line inspection prism foot rest of claim 2, wherein the positioning mechanism further comprises an auxiliary link; the auxiliary connecting rod is vertically connected with the guide rail, the top end of the auxiliary connecting rod is fixedly connected with the prism base, and the bottom end of the auxiliary connecting rod is provided with a tabling groove for tabling and fixing the laser indicator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021492044.8U CN212779237U (en) | 2020-07-24 | 2020-07-24 | Prism foot rest for detecting wharf front edge line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021492044.8U CN212779237U (en) | 2020-07-24 | 2020-07-24 | Prism foot rest for detecting wharf front edge line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212779237U true CN212779237U (en) | 2021-03-23 |
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ID=75038841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021492044.8U Active CN212779237U (en) | 2020-07-24 | 2020-07-24 | Prism foot rest for detecting wharf front edge line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212779237U (en) |
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2020
- 2020-07-24 CN CN202021492044.8U patent/CN212779237U/en active Active
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