CN212239979U - Platform is checked and accepted in assembly of cantilever auxiliary fitting and inspection - Google Patents
Platform is checked and accepted in assembly of cantilever auxiliary fitting and inspection Download PDFInfo
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- CN212239979U CN212239979U CN202021310112.4U CN202021310112U CN212239979U CN 212239979 U CN212239979 U CN 212239979U CN 202021310112 U CN202021310112 U CN 202021310112U CN 212239979 U CN212239979 U CN 212239979U
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Abstract
The utility model discloses a platform for assembling, checking and accepting auxiliary fittings of a wrist arm, which is characterized by comprising a platform base, a wrist arm mounting structure, a displacement measuring platform, a loading mechanism and a displacement loading moving mechanism which are arranged on the platform base, and an image measuring mechanism; the two ends of a flat cantilever tube of the cantilever are respectively provided with a loading point and two displacement measuring points, and the lower end of an inclined cantilever tube is provided with a displacement measuring point; the displacement measurement platform comprises three displacement measurement sensors; the displacement loading moving mechanism comprises three moving mechanisms. The utility model discloses an automated inspection of cantilever assembly error, the pre-measurement in the workshop of flat cantilever amount of deflection to unified construction is accepted the standard, is reduced the construction process.
Description
Technical Field
The utility model belongs to electronic railway connecting net field, concretely relates to cantilever auxiliary assembly assembles and inspection acceptance platform.
Background
The high-speed railway contact net cantilever pre-assembly has the difficulties of large pre-assembly quantity, complex assembly of accessories, uneven inspection and acceptance process, large manual intervention and the like, needs to further improve the efficiency, and particularly comprises the following points:
1. the existing wrist arm assembly is that a flat wrist arm and an inclined wrist arm which are pre-assembled are respectively and manually picked up on an assembly platform, the length of the flat inclined wrist arm and the installation position of parts are respectively and manually compared with a graduated scale on the platform on the assembly platform, the length of a wrist arm pipe and the assembly position of each part are manually read one by one and are respectively compared and confirmed with a paper assembly table, and items meeting error requirements are manually sketched.
2. Assembling the accepted flat inclined cantilever and the cantilever support tube, screwing the bolt to the standard torque by using a torque wrench, comparing and confirming the standard torque with the numerical value in the paper torque meter, manually drawing the items meeting the error requirement, and then packaging and transporting to the site.
3. And (3) carrying out no flat cantilever deflection test on the assembled cantilever at the pre-configuration center, and measuring the height of the carrier cable at the carrier cable seat after the carrier cable is placed on site as the input of the hanger pre-configuration calculation.
The prior art has the following defects and key technical difficulties:
1. at present, the detection of the assembly of the wrist arm is finished by a manual scale measurement and manual comparison mode, so that the problems of large measurement error, non-uniform detection standard and the like are caused.
2. At present, the deflection detection of the wrist arm assembling and balancing wrist arm is realized by installing the wrist arm on the site and measuring the height of a carrier cable at a carrier cable seat on the site after the carrier cable is paid off, so that the measuring procedure of a dropper pre-assembling link is added, the installation procedure on the site is added, and the construction is slow and the construction period is long.
SUMMERY OF THE UTILITY MODEL
At least one in defect or improvement demand more than prior art, for the construction fine work high speed railway contact net engineering, improve construction process standard, reduce the production input cost, strengthen technical management efficiency, the utility model provides a platform is checked and accepted in assembly of cantilever auxiliary assembly and inspection realizes the automated inspection of cantilever assembly error, the preliminary measurement in the workshop of flat cantilever amount of deflection to unified construction is checked and is accepted the standard, is reduced construction process.
In order to achieve the above object, according to an aspect of the present invention, there is provided a platform for assembling, inspecting and accepting auxiliary fittings of a cantilever, comprising a platform base, a cantilever mounting structure, a displacement measuring platform, a loading mechanism, a displacement loading and moving mechanism, and an image measuring mechanism, wherein the cantilever mounting structure, the displacement measuring platform, the loading mechanism and the displacement loading and moving mechanism are mounted on the platform base;
a cantilever is arranged on the cantilever mounting structure, a loading point and a first displacement measuring point are arranged in the end part area of a flat cantilever tube of the cantilever, which is back to the cantilever mounting structure, and a second displacement measuring point is arranged in the end part area of the flat cantilever tube, which is towards the cantilever mounting structure; a third displacement measurement point is arranged at the end part area of the inclined cantilever tube of the cantilever, which faces the cantilever mounting structure;
the loading mechanism is used for loading the loading point;
the displacement measuring platform comprises a first displacement measuring sensor, a second displacement measuring sensor and a third displacement measuring sensor which are respectively used for measuring the deformation of the first displacement measuring point, the second displacement measuring point and the third displacement measuring point before and after loading;
the displacement loading moving mechanism comprises a first moving mechanism, a second moving mechanism and a third moving mechanism which are respectively used for moving the loading mechanism, the first displacement measuring sensor, the second displacement measuring sensor and the third displacement measuring sensor so as to adapt to wristarms with different sizes;
the image measuring mechanism is used for checking the size of the wrist arm.
Further, the platform base is arranged perpendicular to the horizontal plane.
Further, the load point and/or the first displacement measurement point are provided on a messenger clamp of the flat cantilever tube.
Further, the second displacement measuring point is arranged at the connecting point of the flat wrist arm tube and the upper insulator.
Further, the second displacement measuring point is arranged at the connecting point of the flat wrist arm tube and the upper insulator.
Further, the third displacement measuring point is arranged at the connecting point of the inclined cantilever pipe and the lower insulator.
Further, the first moving mechanism and the second moving mechanism are unidirectional displacement/locking mechanisms.
Further, the third moving mechanism is a bidirectional displacement/locking mechanism, and the two shafts of the bidirectional displacement/locking mechanism are perpendicular to each other.
In order to achieve the above object, according to another aspect of the present invention, there is provided a method for assembling, inspecting and accepting a cantilever auxiliary fitting, wherein the method comprises the steps of:
firstly, reading cantilever structure data including cutting size and installation size of cantilever assembly to an unmounted cantilever assembly part by an image measuring mechanism, and automatically comparing and checking the data with calculation data pre-configured for the cantilever;
after the test is qualified, manually installing the wrist on a wrist mounting structure on the platform base;
thirdly, determining position data of each displacement measuring point according to the cantilever structure data, and respectively moving each displacement measuring sensor and each loading mechanism of the displacement loading moving mechanism to each displacement measuring point and each loading point by each moving mechanism of the displacement loading moving mechanism;
in the measuring process, a loading force is applied by a loading mechanism, the structural gap is eliminated, and the initial position value of each displacement measuring point is recorded;
fifthly, applying a set loading force by a loading mechanism, and recording and calculating deflection deformation of each displacement measuring point;
and sixthly, after the deflection deformation is checked and accepted, detaching the cantilever from the cantilever mounting structure, transporting the whole cantilever to the site, and taking the height of the catenary determined according to the deflection deformation as the input of the preassembly calculation of the dropper.
Further, in the fifth step, the loading mechanism adopts a graded loading force measurement mode to obtain multiple groups of loading force-deformation data.
The above-described preferred features may be combined with each other as long as they do not conflict with each other.
Generally, through the utility model discloses above technical scheme who conceives compares with prior art, has following beneficial effect:
1. the existing wrist arm assembly detection is completed in a mode of manual scale measurement and manual comparison. Adopt the utility model discloses a platform is checked and accepted in cantilever auxiliary assembly and inspection can adopt cutting size and the installation dimension of image measurement technique automated inspection cantilever assembly, carries out the automatic inspection of comparing with the calculated data of cantilever pre-allocation, realizes the automated inspection of cantilever assembly error to reduce measuring error, unified detection standard.
2. The deflection detection of the existing wrist arm assembling and balancing wrist arm is that the wrist arm is installed to the site, and after a carrier cable is paid out, the height of the carrier cable at a carrier cable seat is measured on the site to obtain the deflection detection, so that the measuring procedure of a dropper pre-assembling link is added, the installation procedure on the site is added, and the construction is slow and the construction period is long. Adopt the utility model discloses a platform is checked and accepted in cantilever auxiliary assembly and inspection, can transplant the measurement work on the spot to the pre-preparation workshop and accomplish, the pre-measurement has reduced site operation technology link in the workshop of cantilever amount of deflection, has improved the work efficiency.
Drawings
FIG. 1 is a schematic front view of a wrist accessory mounting and inspection acceptance platform according to an embodiment of the present invention;
FIG. 2 is a schematic view of the bi-directional displacement/locking mechanism of the wrist accessory mounting and inspection acceptance platform according to the embodiment of the present invention;
fig. 3 is a schematic flow chart of the method for assembling, checking and accepting the auxiliary accessory of the wrist arm according to the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other. The present invention will be described in further detail with reference to the following embodiments.
As a preferred embodiment of the present invention, as shown in fig. 1-3, the present invention provides a platform for assembling, inspecting and accepting auxiliary fittings of a wrist arm, which comprises a platform base 1 and a wrist arm mounting structure 2, a displacement measuring platform, a loading mechanism 4 and a displacement loading moving mechanism installed on the platform base 1, and further comprises an image measuring mechanism.
Platform base 1 perpendicular to horizontal plane sets up, and platform installation base is the base of fixed cantilever auxiliary assembly and inspection acceptance platform, and the installation of being convenient for is steady firm after the installation. The cantilever mounting structure 2 is a vertical column or similar structure, so that the cantilever 20 is mounted on the same site or close to the site, and the influence of the self weight of the cantilever on the inspection is considered.
The cantilever mounting structure 2 is provided with a cantilever 20, and the cantilever 20 is the object of auxiliary assembly and inspection acceptance of the platform. The end region of the flat cantilever tube 21 of the cantilever 20 facing away from the cantilever mounting structure 2 is provided with a loading point 41 and a first displacement measurement point 211, and the end region of the flat cantilever tube 21 facing towards the cantilever mounting structure 2 is provided with a second displacement measurement point 212; the end region of the oblique carpal tunnel 22 of the wrist 20 towards the wrist mounting structure 2 is provided with a third displacement measurement point 221. The loading point 41 and/or the first displacement measuring point 211 are arranged on the messenger clamp 23 of the flat wrist arm tube 21. The second displacement measurement point 212 is provided at the connection point of the wrist flat tube 21 and the upper insulator 24. The second displacement measurement point 212 is provided at the connection point of the wrist flat tube 21 and the upper insulator 24. The third displacement measurement point 221 is provided at the connection point of the oblique cantilever tube 22 and the lower insulator 25.
The loading mechanism 4 loads the loading point 41 in a hydraulic loading mode, and controls the magnitude of the loading force through the closed-loop feedback by connecting a tension pressure sensor on the stress application rod in series. Under the condition that the measurement time allows, a mode of measuring the graded loading force (such as 200N/400N/600N and the like) can be adopted to obtain a plurality of groups of loading force-deformation data.
The displacement measurement platform comprises a first displacement measurement sensor 31, a second displacement measurement sensor 32 and a third displacement measurement sensor 33, which are respectively used for measuring the deformation of the first displacement measurement point 211, the second displacement measurement point 212 and the third displacement measurement point 221 before and after loading. The sensors all adopt laser displacement sensors, the size of the deformation of the measuring point before and after loading is measured, and the parameters are as follows:
| parameter(s) | Value taking |
| Measuring center distance | 200mm |
| Measurement Range | 0～125mm |
| Resolution of measurement | 2.5μm |
| Sampling period | 2ms |
Since the structure of the wrist arm is variable within a certain range, the positions of the measuring sensor and the loading mechanism are required to be moved according to the size of the wrist arm. When necessary, the loading mechanism also needs to be provided with a necessary locking and positioning structure so as to ensure that the fluctuation change of the loading force is small after the loading mechanism is moved to a required position.
The displacement loading and moving mechanism comprises a first moving mechanism 51, a second moving mechanism 52 and a third moving mechanism 53, which are respectively used for moving the loading mechanism 4 and the first displacement measuring sensor 31, the second displacement measuring sensor 32 and the third displacement measuring sensor 33 so as to adapt to wrists 20 with different sizes. The moving mechanism can adopt the guide of a sliding guide rail and the driving mode of a lead screw guide rod. The screw rod is driven by a stepping motor, and a comprehensive control system provides a stepping motor control signal.
The first moving mechanism 51 and the second moving mechanism 52 are unidirectional displacement/locking mechanisms corresponding to two measuring points and a loading mechanism on the flat cantilever tube.
The third moving mechanism 53 is a two-way displacement/locking mechanism with two axes perpendicular to each other corresponding to the measurement point on the oblique cantilever tube, and a typical two-way displacement/locking mechanism is shown in fig. 2.
The image measuring mechanism adopts an image measuring technology to automatically detect a wrist assembly part before installation and read wrist structure data, including cutting size and installation size of the wrist assembly, and automatically compares the data with calculated data pre-configured for the wrist to check, and deflection check is necessary only when the data is qualified.
As shown in fig. 3, the utility model discloses a work flow of platform is examined and accepted in cantilever auxiliary assembly and inspection, the cantilever assembly error automatic check that it includes and cantilever amount of deflection inspection are all accomplished in advance in sending the workshop before the scene, include following step:
firstly, reading cantilever structure data including cutting size and installation size of cantilever assembly to an unmounted cantilever assembly part by an image measuring mechanism, and automatically comparing and checking the data with calculation data pre-configured for the cantilever;
after the test is qualified, the wrist arm 20 is manually installed on the wrist arm installation structure 2 on the platform base 1;
thirdly, determining the position data of each displacement measuring point according to the cantilever structure data, and respectively moving each displacement measuring sensor and each loading mechanism 4 of the displacement loading moving mechanism to each displacement measuring point and each loading point by each moving mechanism of the displacement loading moving mechanism;
in the measuring process, a small static loading force is applied by the loading mechanism 4, the force value is adjustable and measurable, the structural clearance is eliminated, and the initial position value of each displacement measuring point is recorded;
fifthly, the loading mechanism 4 applies a set loading force, and records and calculates the deflection deformation of each displacement measuring point at the upper insulator, the lower insulator and the catenary wire clamp; under the condition that the measurement time allows, the loading mechanism 4 adopts a mode of measuring the graded loading force (such as 200N/400N/600N, etc.) to obtain a plurality of groups of loading force-deformation data.
And sixthly, after the deflection deformation is qualified, detaching the cantilever 20 from the cantilever mounting structure 2, transporting the whole cantilever 20 to the site, and taking the height of the catenary determined according to the deflection deformation as the input of the prearranged calculation of the dropper.
Adopt the utility model discloses a platform is checked and accepted in cantilever auxiliary assembly and inspection can adopt cutting size and the installation dimension of image measurement technique automated inspection cantilever assembly, carries out the automatic inspection of comparing with the calculated data of cantilever pre-allocation, realizes the automated inspection of cantilever assembly error to reduce measuring error, unified detection standard.
Adopt the utility model discloses a platform is checked and accepted in cantilever auxiliary assembly and inspection, can transplant the measurement work on the spot to the pre-preparation workshop and accomplish, the pre-measurement has reduced site operation technology link in the workshop of cantilever amount of deflection, has improved the work efficiency.
The utility model discloses a platform and method are tested in assembly of cantilever auxiliary assembly and inspection, performance parameter as follows:
1) the method is suitable for measuring the deformation of the forward and backward positioning wrists.
2) The method is suitable for measuring the cantilever structure with size change (2 m-3.6 m) in a certain range; the length of the cantilever and the length of the insulator are less than or equal to 4.6 m; the maximum elevation angle of the flat cantilever is 17 degrees; the distance between the upper base and the lower base is 1.6-2.2 m and can be adjusted; the whole process time of the pre-preparation of one set of wristarms is 5-8 min.
3) The loading force is adjustable (less than or equal to 1 kN).
4) The measurement error of the deformation is not more than 0.5 mm.
4) The measuring process and the data recording are automatically completed.
5) The measurement time of one wrist arm is not more than 4 min.
It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. The platform for assembling, checking and accepting the auxiliary accessories of the wrist arm is characterized by comprising a platform base (1), a wrist arm mounting structure (2), a displacement measuring platform, a loading mechanism (4), a displacement loading moving mechanism and an image measuring mechanism, wherein the wrist arm mounting structure (2), the displacement measuring platform, the loading mechanism and the displacement loading moving mechanism are mounted on the platform base (1);
a wrist arm (20) is mounted on the wrist arm mounting structure (2), a loading point (41) and a first displacement measuring point (211) are arranged in the end part area of a flat wrist arm tube (21) of the wrist arm (20) back to the wrist arm mounting structure (2), and a second displacement measuring point (212) is arranged in the end part area of the flat wrist arm tube (21) facing the wrist arm mounting structure (2); a third displacement measuring point (221) is arranged at the end area, facing the wrist mounting structure (2), of the inclined wrist tube (22) of the wrist (20);
the loading mechanism (4) is used for loading the loading point (41);
the displacement measurement platform comprises a first displacement measurement sensor (31), a second displacement measurement sensor (32) and a third displacement measurement sensor (33), and the first displacement measurement sensor, the second displacement measurement sensor and the third displacement measurement sensor are respectively used for measuring deformation before and after loading of a first displacement measurement point (211), a second displacement measurement point (212) and a third displacement measurement point (221);
the displacement loading and moving mechanism comprises a first moving mechanism (51), a second moving mechanism (52) and a third moving mechanism (53), and the first moving mechanism, the second moving mechanism and the third moving mechanism are respectively used for moving the loading mechanism (4), the first displacement measuring sensor (31), the second displacement measuring sensor (32) and the third displacement measuring sensor (33) so as to adapt to wrists (20) with different sizes;
the image measuring mechanism is used for checking the size of the wrist arm.
2. The wrist-arm accessory assembly and inspection acceptance platform of claim 1, wherein:
the platform base (1) is perpendicular to the horizontal plane.
3. The wrist-arm accessory assembly and inspection acceptance platform of claim 1, wherein:
the loading point (41) and/or the first displacement measuring point (211) are/is arranged on a messenger cable clamp (23) of the flat wrist arm pipe (21).
4. The wrist-arm accessory assembly and inspection acceptance platform of claim 1, wherein:
the second displacement measuring point (212) is arranged at the connecting point of the flat wrist arm tube (21) and the upper insulator (24).
5. The wrist-arm accessory assembly and inspection acceptance platform of claim 1, wherein:
the second displacement measuring point (212) is arranged at the connecting point of the flat wrist arm tube (21) and the upper insulator (24).
6. The wrist-arm accessory assembly and inspection acceptance platform of claim 1, wherein:
and the third displacement measuring point (221) is arranged at the connecting point of the inclined wrist arm tube (22) and the lower insulator (25).
7. The wrist-arm accessory assembly and inspection acceptance platform of claim 1, wherein:
the first moving mechanism (51) and the second moving mechanism (52) are unidirectional displacement/locking mechanisms.
8. The wrist-arm accessory assembly and inspection acceptance platform of claim 1, wherein:
the third moving mechanism (53) is a bidirectional displacement/locking mechanism, and the two shafts of the third moving mechanism are perpendicular to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021310112.4U CN212239979U (en) | 2020-07-06 | 2020-07-06 | Platform is checked and accepted in assembly of cantilever auxiliary fitting and inspection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021310112.4U CN212239979U (en) | 2020-07-06 | 2020-07-06 | Platform is checked and accepted in assembly of cantilever auxiliary fitting and inspection |
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| Publication Number | Publication Date |
|---|---|
| CN212239979U true CN212239979U (en) | 2020-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021310112.4U Active CN212239979U (en) | 2020-07-06 | 2020-07-06 | Platform is checked and accepted in assembly of cantilever auxiliary fitting and inspection |
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| CN (1) | CN212239979U (en) |
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- 2020-07-06 CN CN202021310112.4U patent/CN212239979U/en active Active
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