Static load testing machine and static load testing method for track prefabricated plate
By designing a static load test machine for track prefabricated plates including driving tracks, bottom frames, stressed longitudinal beams and cross beams, mobile loading frames and loading mechanisms, the uneven pressure and need of loading test points in traditional methods are solved. The problem of changing the placement method has achieved fully automatic ballast testing and uniform pressure application, and improved efficiency and test quality.
Patent Information
- Application Number
- CN202110910140.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2021-08-09
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2041-08-09
AI Technical Summary
In the traditional static crack resistance test of rail prefabricated plates, the loading test points are unevenly compressed, and the prefabricated plate placement method needs to be replaced, which is inconvenient to operate.
A static load test machine for prefabricated track plates is designed, including driving tracks, bottom frames, stress-bearing longitudinal beams and cross beams, mobile loading frames and loading mechanisms. The position of the stressed cross beam and longitudinal beam is adjusted by the flip mechanism, and the fully automatic ballast test of the prefabricated plate is achieved to ensure uniform pressure applied to each point.
Fully automatic ballast testing of prefabricated plates is realized, ensuring uniform pressure is applied at all points, avoiding the problem of uneven pressure in traditional methods, saving manpower, and improving efficiency and test quality.
Smart Images
Figure CN113654900B_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of static load testing of track prefabricated plates, and specifically discloses a static load testing machine and a static load testing method for track prefabricated plates. Background Art
[0002] Track precast panels are important concrete components in track construction. Before production is completed and officially put into production, each batch of precast panels needs to be subjected to a static load crack resistance test to check whether its bearing capacity is qualified. The test is divided into two parts: the longitudinal static load crack resistance test of the track panel and the transverse static load crack resistance test of the track panel. In the longitudinal static load crack resistance test, two support frames are symmetrically set to support the track panel with the transverse center line of the track panel as the symmetry axis, and loading test points are symmetrically set just above the two sides of the support frames. During the test, each loading test point is loaded to the preset value, and the track panel is stopped to observe whether there are cracks; in the transverse static load crack resistance test, support frames are symmetrically set on the longitudinal center line of the track panel to support the track panel, and loading test points are symmetrically set above the two sides of the support frames. During the test, each loading point is loaded to the preset value, and the track panel is stopped to observe whether there are cracks.
[0003] The traditional measurement method is to load the precast panels with the help of jacks. The disadvantage is that the pressure on each loading test point is uneven. When conducting longitudinal static load crack resistance test and transverse static load crack resistance test, the placement of the precast panels needs to be changed. The precast panels themselves are very heavy and very inconvenient. Summary of the invention
[0004] The present invention provides a static load testing machine and a static load testing method for track prefabricated panels, which ensure that each loading test point is evenly compressed, and carry out longitudinal static load anti-cracking tests and transverse static load anti-cracking tests without changing the placement of the prefabricated panels.
[0005] To achieve the above-mentioned purpose, the present invention provides a static load testing machine for track prefabricated panels, comprising two traveling rails arranged in parallel on a working surface, a bottom frame arranged between the traveling rails, a load-bearing longitudinal beam and a load-bearing cross beam for supporting the prefabricated panels, a mobile loading frame arranged on the traveling rails, and a loading mechanism arranged on the mobile loading frame; the bottom frame comprises a bottom frame longitudinal beam parallel to the traveling rails and a plurality of bottom frame cross beams arranged between the two bottom frame longitudinal beams, and the plurality of bottom frame cross beams are symmetrically arranged with the transverse center line of the bottom frame as the symmetry axis; the load-bearing longitudinal beam is fixed to the bottom frame On the longitudinal center line of the frame, lifting mechanisms are symmetrically arranged on both sides of the load-bearing longitudinal beam; four load-bearing cross beams are grouped into two, and are symmetrically arranged with the transverse center line of the bottom frame as the symmetry axis, and the two load-bearing cross beams in each group are symmetrically arranged with the load-bearing longitudinal beam as the symmetry axis, and the height of the load-bearing cross beam is greater than the height of the load-bearing longitudinal beam. The load-bearing cross beam is erected on the upper surface of the bottom frame cross beam or flipped and recovered to the bottom of the load-bearing longitudinal beam through a flipping mechanism; the mobile loading frame is detachably fixed above the bottom frame through a connecting mechanism; the positions of the multiple loading mechanisms correspond one by one to the preset loading test points of the prefabricated plate.
[0006] Furthermore, the flipping mechanism includes a flipping cylinder and a flipping seat; the cylinder body of the flipping cylinder is hinged to the working surface, and the piston is hinged to the side of the load-bearing beam; the top of the flipping seat is fixedly connected to the side of the load-bearing beam, and the bottom is hinged to the chassis beam.
[0007] Furthermore, turning seats are symmetrically arranged on both sides of the turning oil cylinder.
[0008] Furthermore, the mobile loading frame includes a walking beam, a track wheel arranged on the walking beam and cooperating with the driving track, a top frame located above the walking beam, an outer column connecting the walking beam and the top frame, and an inner column with the top end fixed on the top frame, and a through hole I is arranged at the bottom end of the inner column; the connecting mechanism includes a connecting seat and a latch cylinder; the connecting seat is fixed on the longitudinal beam of the base frame, and is provided with a groove for accommodating the bottom end of the inner column, and through holes II corresponding to through holes I are arranged on both sides of the groove; the cylinder body of the latch cylinder is arranged outside the connecting seat, and a latch for connecting through holes I and through holes II is arranged on the piston.
[0009] Furthermore, the bottom end of the inner column is a flat plate-like structure.
[0010] Furthermore, a driving motor for driving the track wheels to travel is arranged on the walking beam.
[0011] Furthermore, the top frame includes two top frame cross beams and a top frame longitudinal beam connecting the two top frame cross beams; the loading mechanism is arranged on the top frame, including a loading cylinder and a pressure head.
[0012] Furthermore, the lifting mechanism is a lifting cylinder.
[0013] The present invention also provides a track prefabricated plate static load test method, comprising the following steps:
[0014] S1, transporting the prefabricated panels to the jacking mechanism in the static load testing machine for the track prefabricated panels;
[0015] S2, the jacking mechanism lifts up the precast panel, the load-bearing beam is erected on the upper surface of the bottom frame beam through the flipping mechanism, the jacking mechanism descends, the precast panel is placed on the load-bearing beam, and the loading mechanism performs longitudinal loading;
[0016] S3, after the longitudinal loading is completed, the lifting mechanism lifts up the precast panel, the stressed cross beam is flipped and recovered to the bottom of the stressed longitudinal beam through the flipping mechanism, the lifting mechanism descends, the precast panel is placed on the stressed longitudinal beam, and the loading mechanism performs transverse loading.
[0017] Furthermore, in step S1, the precast panels are transported by a rail car that cooperates with the traveling track, the mobile loading frame is separated from the bottom frame by a connecting mechanism, the mobile loading frame is pushed away from the top of the bottom frame, the rail car transports the precast panels to the jacking mechanism, the rail car drives away from the track precast panel static load testing machine, pushes the mobile loading frame to the top of the bottom frame, and fixes the mobile loading frame above the bottom frame by the connecting mechanism.
[0018] The present invention has the following advantages:
[0019] The present invention can realize a fully automatic ballast test on the prefabricated panels. By installing the loading cylinder on the mobile loading frame according to the position of the preset loading test point of the prefabricated panel, manual loading is no longer used, and uniform pressure is applied to each point. The position of the stressed crossbeam is adjusted by the flipping mechanism, so that the prefabricated panel is placed either on the stressed crossbeam or on the stressed longitudinal beam. There is no need to change the placement of the prefabricated panels, thus saving manpower, improving efficiency, and enhancing test quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a structural schematic diagram of a static load testing machine for track precast panels;
[0021] Figure 2 for Figure 1 A magnified view of part A;
[0022] Figure 3 for Figure 1 A magnified view of part B;
[0023] Figure 4 for Figure 1 The view of the static load testing machine for track precast panels in direction A is shown;
[0024] Figure 5 for Figure 4 Magnified view of part C.
[0025] In the figure: 1-travel track; 2-loaded longitudinal beam; 3-loaded cross beam; 4-underframe cross beam; 5-turning cylinder; 6-turning seat; 7-walking beam; 8-track wheel; 9-top frame; 10-outer column; 11-inner column; 12-connecting seat; 13-latch cylinder; 14-cylinder bracket; 15-driving motor; 16-loading cylinder; 17-pressure head; 18-lifting cylinder. DETAILED DESCRIPTION
[0026] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. In this embodiment, "horizontal" and "vertical" correspond to the "horizontal" and "vertical" of the track prefabricated plate.
[0027] The present embodiment provides a static load testing machine for track prefabricated panels, comprising two running rails 1 arranged in parallel on a working surface, a bottom frame arranged between the running rails 1, a load-bearing longitudinal beam 2 and a load-bearing cross beam 3 for supporting the prefabricated panels, a mobile loading frame arranged on the running rails 1, and a loading mechanism arranged on the mobile loading frame; the bottom frame comprises a bottom frame longitudinal beam parallel to the running rails 1 and a plurality of bottom frame cross beams 4 arranged between the two bottom frame longitudinal beams, and the plurality of bottom frame cross beams 4 are symmetrically arranged with the transverse center line of the bottom frame as the symmetry axis; the load-bearing longitudinal beam 2 is fixed to the longitudinal axis of the bottom frame; On the center line, jacking mechanisms are symmetrically arranged on both sides of the stressed longitudinal beam 2; two of the four stressed cross beams 3 are grouped together, and are symmetrically arranged with the transverse center line of the bottom frame as the symmetry axis. The two stressed cross beams 3 in each group are symmetrically arranged with the stressed longitudinal beam 2 as the symmetry axis. The height of the stressed cross beam 3 is greater than the height of the stressed longitudinal beam 2. The stressed cross beam 3 is erected on the upper surface of the bottom frame cross beam 4 or flipped and recovered to the bottom of the stressed longitudinal beam 2 through a flipping mechanism; the mobile loading frame is detachably fixed above the bottom frame through a connecting mechanism; the positions of the multiple loading mechanisms correspond one by one to the preset loading test points of the precast panel.
[0028] Furthermore, the turning mechanism includes a turning cylinder 5 and a turning seat 6; the cylinder body of the turning cylinder 5 is hinged to the working surface, and the piston is hinged to the side of the force-bearing beam 3; the top of the turning seat 6 is fixedly connected to the side of the force-bearing beam 3, and the bottom is hinged to the bottom frame beam 4. The turning of the bottom frame beam 4 is achieved by the extension and contraction of the turning cylinder 5.
[0029] Furthermore, turning seats 6 are symmetrically arranged on both sides of the turning cylinder 5 to ensure the stability of the turning of the chassis crossbeam 4 .
[0030] Furthermore, the mobile loading frame includes a walking beam 7, a track wheel 8 arranged on the walking beam 7 and cooperating with the driving track 1, a top frame 9 located above the walking beam 7, an outer column 10 connecting the walking beam 7 and the top frame 9, and an inner column 11 whose top is fixed on the top frame 9, and a through hole I is arranged at the bottom end of the inner column 11; the connecting mechanism includes a connecting seat 12 and a latch cylinder 13; the connecting seat 12 is fixed on the longitudinal beam of the bottom frame, and is provided with a groove for accommodating the bottom end of the inner column 11, and through holes II corresponding to through holes I are arranged on both sides of the groove; the cylinder body of the latch cylinder 13 is arranged outside the connecting seat 12 through a cylinder bracket 14, and a latch for connecting through holes I and II is arranged on the piston. Under the action of the latch cylinder 13, the latch can be inserted into or pulled out of the channel formed by the inner column 11 and the connecting seat 12, so as to realize the connection relationship between the mobile loading frame and the bottom frame.
[0031] Furthermore, six chassis cross beams 4 are grouped in pairs, and the load-bearing cross beams 3 are erected on the upper surface of the chassis cross beams 4 of the middle group through a turning mechanism.
[0032] Furthermore, the bottom end of the inner column 11 is a flat plate-like structure to facilitate insertion into the connecting seat 12 .
[0033] Furthermore, a driving motor 15 for driving the track wheel 8 to travel is arranged on the walking beam 7 .
[0034] Furthermore, the top frame 9 includes two top frame cross beams and a top frame longitudinal beam connecting the two top frame cross beams; the loading mechanism is arranged on the top frame 9, including a loading cylinder 16 and a pressure head 17.
[0035] Furthermore, the lifting mechanism is a lifting cylinder 18 .
[0036] This embodiment also provides a static load test method for track prefabricated panels, comprising the following steps:
[0037] S1, transporting the prefabricated panels to the jacking mechanism in the static load testing machine for the track prefabricated panels;
[0038] S2, the lifting mechanism lifts up the precast panel, the load-bearing beam 3 is erected on the upper surface of the bottom frame beam 4 through the flipping mechanism, the lifting mechanism descends, the precast panel is placed on the load-bearing beam 3, and the loading mechanism performs longitudinal loading;
[0039] S3, after the longitudinal loading is completed, the lifting mechanism lifts up the precast panel, the stressed cross beam 3 is flipped and recovered to the bottom of the stressed longitudinal beam 2 through the flipping mechanism, the lifting mechanism descends, the precast panel is placed on the stressed longitudinal beam 2, and the loading mechanism performs transverse loading.
[0040] Furthermore, in step S1, the precast panels are transported by a rail vehicle that cooperates with the traveling track 1, the mobile loading frame is separated from the bottom frame by a connecting mechanism, and the mobile loading frame is pushed away from the top of the bottom frame, so that the rail vehicle can transport the precast panels to the jacking mechanism. The rail vehicle drives away from the static load testing machine for track precast panels, pushes the mobile loading frame to the top of the bottom frame, and fixes the mobile loading frame above the bottom frame by the connecting mechanism.
[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. A static load testing machine for track prefabricated panels, characterized in that: It includes two traveling rails arranged in parallel on the working surface, a bottom frame arranged between the traveling rails, a load-bearing longitudinal beam and a load-bearing cross beam for supporting the prefabricated panels, a mobile loading frame arranged on the traveling rails, and a loading mechanism arranged on the mobile loading frame; The bottom frame includes a bottom frame longitudinal beam parallel to the vehicle track and a plurality of bottom frame cross beams arranged between two bottom frame longitudinal beams, wherein the plurality of bottom frame cross beams are symmetrically arranged with the transverse center line of the bottom frame longitudinal beam as the symmetry axis; The load-bearing longitudinal beam is fixed on the longitudinal center line of the bottom frame, and jacking mechanisms are symmetrically arranged on both sides of the load-bearing longitudinal beam; Two of the four load-bearing cross beams form a group, and are symmetrically arranged with the horizontal center line of the bottom frame as the symmetry axis. The two load-bearing cross beams in each group are symmetrically arranged with the load-bearing longitudinal beam as the symmetry axis. The height of the load-bearing cross beam is greater than that of the load-bearing longitudinal beam. The load-bearing cross beam is erected on the upper surface of the bottom frame cross beam or flipped and recovered to the bottom of the load-bearing longitudinal beam through a flipping mechanism; The mobile loading frame is detachably fixed above the bottom frame via a connecting mechanism; The positions of the plurality of loading mechanisms correspond one-to-one to the preset loading test points of the prefabricated panels; The turning mechanism comprises a turning cylinder and a turning seat; The cylinder body of the tilting oil cylinder is hinged to the working surface, and the piston is hinged to the side of the stressed crossbeam; The top of the turning seat is fixedly connected to the side of the load-bearing crossbeam, and the bottom is hinged to the bottom frame crossbeam.
2. The static load testing machine for track prefabricated panels according to claim 1, characterized in that: The turning seats are symmetrically arranged on both sides of the turning oil cylinder.
3. The static load testing machine for track prefabricated panels according to claim 2, characterized in that: The mobile loading frame includes a walking beam, a track wheel arranged on the walking beam and matched with the driving track, a top frame located above the walking beam, an outer column connecting the walking beam and the top frame, and an inner column with the top end fixed on the top frame, and a through hole I is arranged at the bottom end of the inner column; The connecting mechanism includes a connecting seat and a latch cylinder; The connecting seat is fixed on the longitudinal beam of the chassis, and is provided with a groove for accommodating the bottom end of the inner column, and through holes II corresponding to through holes I are provided on both sides of the groove; The cylinder body of the latch oil cylinder is arranged outside the connecting seat, and a latch for connecting the through hole I and the through hole II is arranged on the piston.
4. The static load testing machine for track prefabricated panels according to claim 3, characterized in that: The bottom end of the inner column is a flat plate-like structure.
5. The static load testing machine for track prefabricated panels according to claim 4, characterized in that: A driving motor for driving the track wheels to travel is arranged on the walking beam.
6. The static load testing machine for track prefabricated panels according to claim 5, characterized in that: The top frame includes two top frame cross beams and a top frame longitudinal beam connecting the two top frame cross beams; The loading mechanism is arranged on the top frame and comprises a loading cylinder and a pressure head.
7. The static load testing machine for track prefabricated panels according to claim 1, characterized in that: The lifting mechanism is a lifting cylinder.
8. A static load test method for track prefabricated panels, characterized in that: The steps include: S1, transporting the precast panel to the jacking mechanism of the static load testing machine for track precast panels according to any one of claims 1 to 7; S2, the jacking mechanism lifts up the precast panel, the load-bearing beam is erected on the upper surface of the bottom frame beam through the flipping mechanism, the jacking mechanism descends, the precast panel is placed on the load-bearing beam, and the loading mechanism performs longitudinal loading; S3, after the longitudinal loading is completed, the lifting mechanism lifts up the precast panel, the stressed cross beam is flipped and recovered to the bottom of the stressed longitudinal beam through the flipping mechanism, the lifting mechanism descends, the precast panel is placed on the stressed longitudinal beam, and the loading mechanism performs transverse loading.
9. The static load test method for track prefabricated slabs according to claim 8, characterized in that: In step S1, the precast panels are transported by a rail vehicle that cooperates with the traveling track, the mobile loading frame is separated from the bottom frame by a connecting mechanism, the mobile loading frame is pushed away from the top of the bottom frame, the rail vehicle transports the precast panels to the jacking mechanism, the rail vehicle drives away from the track precast panel static load testing machine, pushes the mobile loading frame to the top of the bottom frame, and fixes the mobile loading frame above the bottom frame by the connecting mechanism.
Citation Information
Patent Citations
Intensity detection test bed for CRTS III-type track plate
CN204255764U
Static load test bed for CRTS III type ballastless track plate of high-speed railway
CN208937423U