CN214843025U - Pantograph bow center skew measuring device - Google Patents
Pantograph bow center skew measuring device Download PDFInfo
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- CN214843025U CN214843025U CN202121381134.4U CN202121381134U CN214843025U CN 214843025 U CN214843025 U CN 214843025U CN 202121381134 U CN202121381134 U CN 202121381134U CN 214843025 U CN214843025 U CN 214843025U
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- range finder
- laser range
- pantograph
- support
- pantograph head
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Abstract
The utility model belongs to the technical field of pantograph tests, and discloses a pantograph head center offset measuring device, which comprises a stay cord, a laser range finder and a data processing module, wherein a first end of the stay cord is wound on a test bed, a second end of the stay cord is connected with a pantograph head, and the stay cord can stretch along with the movement of the pantograph head; the laser range finder is arranged on the test bed, the detection height is between the first end and the second end of the pull rope, and the laser range finder is arranged in the first direction of the pull rope to detect the distance variation between the pull rope and the laser range finder; the first direction is forward or backward along the horizontal direction; the data processing module is connected with the laser range finder to receive a detection signal of the laser range finder and obtain the center offset of the pantograph head. The utility model discloses can realize the detection to the position variation at pantograph bow center, this measuring device measuring result is accurate, simple structure, and equipment is few, easily realizes.
Description
Technical Field
The utility model relates to a pantograph test technical field especially relates to a pantograph bow center skew measuring device.
Background
The pantograph is a key part for obtaining electric power from a contact net of a railway electric locomotive, if the pantograph breaks down, the electric locomotive loses power and cannot run, and the pantograph must be in a good state. The pantograph test bed is necessary equipment for ensuring good state of a pantograph and accurately detecting various performance indexes of the pantograph. The pantograph head part of the pantograph is used as a part for tightly contacting the pantograph with a contact network and moves up and down along with the contact network in work. Due to the mechanical structure, when the pantograph head moves up and down, the central point of the pantograph head can move back and forth in the horizontal direction, and the stress of the pantograph is affected. The detection of the front and back central position changes of the pantograph head at different heights has positive significance for ensuring the reliability of the pantograph.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a pantograph bow center skew measuring device to detect the position variation at pantograph bow center.
To achieve the purpose, the utility model adopts the following technical proposal:
a pantograph head center offset measurement apparatus, comprising:
the first end of the pull rope is wound on the test bed, the second end of the pull rope is connected with the pantograph head, and the pull rope can stretch along with the movement of the pantograph head;
the laser range finder is arranged on the test bed, the detection height of the laser range finder is positioned between the first end and the second end of the pull rope, and the laser range finder is arranged in the first direction of the pull rope to detect the distance variation between the pull rope and the laser range finder; the first direction is forward or backward along the horizontal direction;
and the data processing module is connected with the laser range finder to receive the detection signal of the laser range finder so as to obtain the center offset of the pantograph head.
Optionally, the pantograph head center offset measuring device further comprises a support, the support is movably connected to the test bed, and the laser range finder is arranged on the support.
Optionally, the support is connected with the test bed in a sliding manner, and the sliding direction is along the horizontal direction and perpendicular to the first direction.
Optionally, the laser range finder is detachably connected with the support.
Optionally, the support is L-shaped, the bottom end of the support is slidably connected to the test bed, a plurality of slotted holes in the vertical direction are formed in the side wall of the test bed, and the laser range finder is connected to the support through the slotted holes.
Optionally, the bottom of support is equipped with the guide, be equipped with the spout on the test bench, the guide can sliding connection in the spout.
Optionally, the support is a right angle metal piece.
Optionally, the pull cord is a steel cord.
Optionally, a detection point a is arranged on the pulling rope, and the distance between the detection point a and the first end of the pulling rope is 50-100 mm.
Optionally, the horizontal distance between the laser distance meter and the test point a in the non-operating state is more than 50 mm.
The utility model has the advantages that:
the utility model discloses a pantograph bow center skew measuring device through set up laser range finder at the test bench, measures the stay cord of connecting the pantograph bow in the ascending position offset in front and back side, can obtain the center offset of pantograph bow through data processing module to the realization is accurate to the detection of the position variation at pantograph bow center, and this measuring device measuring result is accurate, simple structure, and equipment is few, easily realizes.
Drawings
Fig. 1 is a schematic structural view of a pantograph head center offset measurement apparatus according to the present invention, when a pantograph head is in a non-operating state;
fig. 2 is a schematic structural view of the pantograph head center offset measurement apparatus of the present invention when the pantograph head is in a working state;
fig. 3 is a schematic structural diagram of a support in the pantograph head center offset measurement apparatus of the present invention.
In the figure:
100. a pantograph head; 200. a test bed;
1. pulling a rope; 2. a laser range finder; 3. a data processing module; 4. a support; 41. a long slot hole; 42. a guide member.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood as appropriate by those of ordinary skill in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning. The term "plurality" is to be understood as more than two.
The utility model provides a pantograph head center offset measuring device, as shown in fig. 1 and 2, comprising a stay cord 1, a laser range finder 2 and a data processing module 3, wherein, the first end of the stay cord 1 is coiled on a test bed 200, the second end is connected with the pantograph head 100, the stay cord 1 can stretch along with the movement of the pantograph head 100; the laser range finder 2 is arranged on the test bed 200, the detection height of the laser range finder 2 is positioned between the first end and the second end of the pull rope 1, and the laser range finder 2 is arranged in the first direction of the pull rope 1 to detect the distance variation between the pull rope 1 and the laser range finder 2; the first direction is forward or backward along the horizontal direction; the data processing module 3 is connected with the laser range finder 2 to receive a detection signal of the laser range finder 2, and a central offset of the pantograph head 100 is obtained.
As shown in fig. 1, the basic principle of the present invention is: through on current pantograph test bench 200, utilize the pantograph to carry out static tensile test, adopt stay cord 1 to pull the mode and go on, install a laser range finder 2 in stay cord 1 the place ahead, the laser irradiation that laser range finder 2 sent is on stay cord 1, makes the distance between stay cord 1 and the laser range finder 2 change, measures this change through laser range finder 2, converts out the central displacement volume of pantograph head 100. When the pantograph head 100 is in a non-operating state, the length of the pull rope 1 is the shortest, when the pantograph head 100 is in an operating state, as shown in fig. 2, the second end of the pull rope 1 extends upward along with the pantograph head 100, in this process, the distance between the pull rope 1 and the laser range finder 2 changes, the laser range finder 2 sends the distances L1 and L2 in two states to the data processing module 3, and the data processing module 3 can calculate the horizontal offset W of the pantograph head 100 according to the distance variation L between the pull rope 1 and the laser range finder 2, which is L1-L2:
and W is L multiplied by H1/H2, wherein H1 is the vertical distance between the detection point A on the pull rope 1 and the test bed 200 in the non-working state, and H2 is the vertical distance between the detection point A on the pull rope 1 and the test bed 200 in the working state. By detecting the deviation of the center of the pantograph head 100 at different heights, the pantograph head 100 can be prevented from being stressed too much due to too large deviation during working. When the amount of change in the distance between the cord 1 and the laser rangefinder 2 is located behind the cord 1, L is L2-L1.
The utility model discloses a pantograph bow center skew measuring device, through set up laser range finder 2 at test bench 200, measure the stay cord 1 of connecting pantograph bow 100 in the ascending position offset of front and back side, can obtain pantograph bow 100's center offset through data processing module 3 to the realization is accurate to the detection of the position variation at pantograph bow 100 center, and this measuring device measuring result is simple structure, and equipment is few, easily realizes.
Optionally, the pantograph head 100 center deviation measuring device further includes a support 4, the support 4 is movably connected to the test bed 200, and the laser range finder 2 is disposed on the support 4.
As shown in FIGS. 1 and 2, a support 4 is arranged on the test bed 200 and is used for fixedly connecting the laser range finder 2, the test height of the laser range finder 2 can be adjusted through the support 4, and meanwhile, the laser range finder 2 can be fixed and adjusted conveniently, so that the detection efficiency is improved.
Optionally, the support 4 is slidably connected to the test bed 200, and the sliding direction is along the horizontal direction and perpendicular to the first direction.
As shown in fig. 1 and 2, if the left-right direction in the drawings is set to the front-rear direction of the cord 1, the sliding direction of the holder 4 is perpendicular to the paper surface. When pantograph bow 100 rises or descends, stay cord 1 realizes stretching out and drawing back, and the micro displacement of the left and right sides direction of the horizontal direction probably produces in the flexible in-process to pantograph bow 100 of difference, certain error also can exist in the mounted position, consequently, sets up sliding connection's support 4 in this embodiment, can the position alignment between laser range finder 2 and the stay cord 1 of fast speed adjusting to elongate member stay cord 1, the detection of being convenient for. The sliding connection can realize the alignment of any position, and the alignment efficiency is improved.
Optionally, the laser range finder 2 is detachably connected to the support 4.
In some embodiments, the laser rangefinder 2 is attached to the support 4 by screws or bolts to facilitate replacement and disassembly.
Optionally, the support 4 is L-shaped, the bottom end of the support is slidably connected to the test bed 200, the side wall of the support is provided with a plurality of slotted holes 41 along the vertical direction, and the laser range finder 2 is connected to the support 4 through the slotted holes 41.
As shown in fig. 3, the support 4 is L-shaped, the bottom end is perpendicular to the side wall, and the long slot hole 41 is used to facilitate the adjustment of the vertical position of the laser range finder 2 on the support 4, so as to adjust the height of the laser range finder 2, so that the emitted laser corresponds to the test point a on the pull rope 1.
Optionally, the bottom end of the support 4 is provided with a guide 42, the test bed 200 is provided with a sliding groove, and the guide 42 can be slidably connected in the sliding groove.
As shown in fig. 3, the bottom end of the support 4 is provided with a guide 42 protruding from the bottom surface, and the outer side wall of the guide 42 can abut against and slide on the inner side wall of the sliding slot, so as to guide the support 4 in the second direction and reduce the position error caused by sliding.
Optionally, support 4 is the right angle metalwork, and the structural strength of metalwork is big, can provide stable connection and support for laser range finder 2, and the right angle setting is convenient for adjust laser range finder 2's laser outgoing direction, makes its horizontal direction jet out, reduces measuring error.
Optionally, the pull rope 1 is a steel wire rope, so that the elastic change is small, the strength is high, the working requirement of the pantograph head 100 is met, and the improvement of the measurement precision is facilitated.
Optionally, the pull rope 1 is provided with a detection point a, and the distance between the detection point a and the first end of the pull rope 1 is 50-100 mm.
In the embodiment shown in fig. 1 and 2, the first end of the pull rope 1 is wound and fixed on the test bed 200, so that in order to avoid the influence of the height of the winding mechanism on the test, the height of the winding mechanism is higher when the test point a is selected above the winding mechanism, the test height of the laser range finder 2 is at the test point a, in order to reflect the obvious distance change at the test point a during the test, under the permission of the pantograph head 100 and the test bed 200, the distance between the test point a and the first end can be increased as much as possible, the distance of 50-100mm, preferably 100mm, is selected in the embodiment, and in the test process, the difference of the front-back expansion distance of the pull rope 1 meets the test precision requirement. The actual calculated data for H1 and H2 in this embodiment is the height of test point a from the surface of the test stand 200 minus the height of the winding mechanism, as shown in fig. 1 and 2, H1 may also be referred to as the vertical distance between test point a and the output point of the pull cord 1, and H2 is the vertical distance between the pantograph head 100 and the output point of the pull cord 1.
Optionally, the horizontal distance between the laser distance meter 2 and the test point a in the non-operating state is 50-100 mm.
As shown in fig. 1, in the present embodiment, the initial distance L1 between the laser range finder 2 and the test point a is set to be 100mm, which is equal to or close to the height of the test point a, so as to facilitate calculation.
To sum up, the utility model discloses a detect the skew condition of pantograph bow 100's center under the co-altitude, prevent to cause the too big condition of pantograph mechanical structure atress because of pantograph bow 100 squints is too big.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A pantograph head center offset measurement device, comprising:
the device comprises a pull rope (1), wherein a first end of the pull rope (1) is wound on a test bed (200), a second end of the pull rope (1) is connected with a pantograph head (100), and the pull rope (1) can stretch and contract along with the movement of the pantograph head (100);
the laser range finder (2) is arranged on the test bed (200), the detection height of the laser range finder (2) is positioned between the first end and the second end of the pull rope (1), and the laser range finder (2) is arranged in the first direction of the pull rope (1) to detect the distance variation between the pull rope (1) and the laser range finder (2); the first direction is forward or backward along the horizontal direction;
and the data processing module (3) is connected with the laser range finder (2) to receive the detection signal of the laser range finder (2) and obtain the central offset of the pantograph head (100).
2. Pantograph head centre offset measurement device according to claim 1, characterized in that it further comprises a support (4), said support (4) being movably connected to said test stand (200), said laser rangefinder (2) being provided on said support (4).
3. Pantograph head centre offset measuring device according to claim 2, characterized in that between said support (4) and said test stand (200) there is a sliding connection, the sliding direction being horizontal and perpendicular to said first direction.
4. Pantograph head centre offset measurement device according to claim 2, characterized in that the laser rangefinder (2) is detachably connected to the support (4).
5. Pantograph bow center offset measurement device according to claim 4, characterized in that the support (4) is L-shaped, the bottom end is slidably connected to the test stand (200), the side wall is provided with a plurality of slotted holes (41) along the vertical direction, and the laser range finder (2) is connected to the support (4) through the slotted holes (41).
6. Pantograph head centre offset measurement device according to claim 3, characterized in that the bottom end of the support (4) is provided with a guide (42), the test stand (200) is provided with a sliding slot, the guide (42) is slidably connected in the sliding slot.
7. Pantograph head centre offset measurement device according to claim 2, characterized in that the support (4) is a right-angle metal piece.
8. Pantograph head centre offset measurement device according to claim 1, characterized in that the pull rope (1) is a wire rope.
9. Pantograph head centre offset measurement device according to claim 1, characterised in that the stay cord (1) is provided with a detection point a, said detection point a being located at a distance of 50-100mm from the first end of the stay cord (1).
10. Pantograph head centre offset measurement device according to claim 9, characterized in that the horizontal distance in the inactive state between the laser distance meter (2) and the detection point a is above 50 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121381134.4U CN214843025U (en) | 2021-06-21 | 2021-06-21 | Pantograph bow center skew measuring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121381134.4U CN214843025U (en) | 2021-06-21 | 2021-06-21 | Pantograph bow center skew measuring device |
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| CN214843025U true CN214843025U (en) | 2021-11-23 |
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| CN202121381134.4U Active CN214843025U (en) | 2021-06-21 | 2021-06-21 | Pantograph bow center skew measuring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117589243A (en) * | 2024-01-18 | 2024-02-23 | 江苏路航轨道交通科技有限公司 | Automatic lift correction's pantograph detection device |
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2021
- 2021-06-21 CN CN202121381134.4U patent/CN214843025U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117589243A (en) * | 2024-01-18 | 2024-02-23 | 江苏路航轨道交通科技有限公司 | Automatic lift correction's pantograph detection device |
| CN117589243B (en) * | 2024-01-18 | 2024-04-09 | 江苏路航轨道交通科技有限公司 | Automatic lift correction's pantograph detection device |
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