A method for preparing a high-iron window frame profile for side windows

Abstract

The application relates to a preparation method of a high-speed rail side window frame profile, which comprises the following specific steps: S1, respectively arranging an upper profile part and a lower profile part on a workbench; S2, dividing damping particle filling spaces of the upper profile part and the lower profile part into bottom filling sections and side edge filling sections; S3, respectively filling damping particles in the bottom filling sections of the upper profile part and the lower profile part; S4, assembling first partition blocks to two sides of the upper profile part and the lower profile part; S5, respectively filling damping particles in the side edge filling sections of the upper profile part and the lower profile part; S6, assembling second partition blocks to top parts of the side edge filling sections of the upper profile part and the lower profile part; and S7, connecting the upper profile part and the lower profile part into a whole through a connecting mechanism. The high-speed rail side window frame profile prepared by the application can keep the filling stability of the damping particles in the bottom filling sections and the side edge filling sections for a long time.

Description

Technical Field

[0001] This invention relates to a method for preparing window frame profiles for high-speed railway side windows. Based on high space filling rate and segmented filling, it can quickly fill damping particles into the damping particle filling space of the window frame profile for high-speed railway side windows, thereby preparing a window frame profile for high-speed railway side windows with excellent noise reduction performance. Background Technology

[0002] The primary source of side noise in high-speed trains is aerodynamic noise, caused by air resistance at high speeds. This noise is transmitted into the train cabin mainly through the side walls, end walls, and roof. Therefore, the side windows installed on the train's side walls must have sufficient noise reduction capabilities. Currently, train side windows primarily use soundproof windows, with double-glazed glass as the main sound insulation component. While the double-glazed glass used in existing soundproof windows generally meets sound insulation requirements, the window frames used to install the double-glazed glass on the train rarely incorporate sound insulation mechanisms, resulting in a need for further improvement in the overall sound insulation of the train's side windows. To achieve sound insulation treatment of the window frames, some manufacturers have attempted to divide the cavity of the window frame into spaces filled with damping particles, and then fill these spaces with damping particles. The noise reduction is achieved through the energy dissipation caused by the friction between the damping particles.

[0003] However, as the running time of high-speed trains increases, the damping particles in the cavity of the window frame profile will continue to deposit downwards. That is, the damping particles in the upper part will continue to sink downwards, eventually leading to an increase in the space filling rate of the damping particles at the bottom of the cavity, while the space filling rate of the damping particles in the upper part of the cavity decreases. This causes the damping particles in the upper part of the cavity to become loose, which in turn leads to a large amount of damping particle collision noise.

[0004] Therefore, the research objective of this invention is to develop a method for preparing a high-speed rail side window frame profile that can effectively increase the overall space filling rate of damping particles to over 92%, thereby significantly reducing the downward deposition space of damping particles located on the upper side; and can effectively fill damping particles at different locations in segments and isolate the segmented damping particles to further reduce the downward deposition space of damping particles located on the upper side; thereby effectively and practically improving the vibration reduction and noise reduction effect of the window frame profile for high-speed rail side windows. Summary of the Invention

[0005] In view of the technical problems existing in the prior art, the present invention provides a method for preparing window frame profiles for high-speed railway side windows, which can effectively solve the technical problems existing in the prior art.

[0006] The technical solution of this invention is:

[0007] A method for manufacturing a window frame profile for a high-speed railway side window, wherein the window frame profile is square in shape, with each of its four corners being arc-shaped. The window frame profile is composed of an upper profile section and a lower profile section arranged symmetrically. Each upper and lower profile section has a hollow cavity. A partition plate is provided in the center of each hollow cavity to divide its outer surface into a space for damping particle filling. The damping particle filling method includes the following specific steps:

[0008] S1, fix one long side of the upper profile split and the lower profile split to the workbench equipped with a vibration source, so that the two sides of the upper profile split and the lower profile split face upwards respectively;

[0009] S2, the damping particle filling space of the upper profile split and the lower profile split is divided into a bottom filling section and a set of side filling sections set on both sides of the bottom filling section. The bottom filling section is a long side section installed on the workbench and an arc-shaped section connected to the long side section. The side filling sections are the two sides of the upper profile split and the lower profile split. The bottom of the side filling section is spaced apart from the bottom filling section. The top of the side filling section is located at least 3cm below the top of the two sides of the upper profile split and the lower profile split.

[0010] S3, damping particles are filled into the bottom filling sections of the upper profile section and the lower profile section respectively:

[0011] Let the cross-sectional area of ​​the damping particle filling space be S, the length of the bottom filling section be L1, the filling rate of the damping particle space in the bottom filling section be k1, and the density of the damping particles be ρ. Calculate the damping particle filling weight of the bottom filling section G1 = S * L1 * k1 * ρ.

[0012] Weigh out damping particles with a weight of G1, and add them quantitatively to the damping particle filling spaces of the upper profile section and the lower profile section through the opening of the side filling section.

[0013] S4, the corresponding first partition blocks are assembled to both sides of the upper profile split and the lower profile split using the cold shrink assembly method, and in 20S, the first partition blocks are driven to move to the interval between the bottom filling section and the side filling section of the upper profile split and the lower profile split, so that the damping particles are effectively filled in the bottom filling section of the upper profile split and the lower profile split according to the space filling rate k1;

[0014] S5, damping particles are filled into the side filling sections of the upper profile segment and the lower profile segment respectively:

[0015] Set the length of the side filling section to L2, and the damping particle space filling rate in the side filling section to k2. Calculate the damping particle filling weight of the side filling section G2=S*L2*k2*ρ.

[0016] Weigh out damping particles with a weight of G2, and add them quantitatively to the damping particle filling spaces of the upper profile section and the lower profile section through the opening of the side filling section.

[0017] S6, using the cold shrink assembly method, the corresponding second partition blocks are respectively assembled to the top of the side filling sections of the upper profile split and the lower profile split, and in 20S, the second partition blocks are driven to move to the ends of the side filling sections of the upper profile split and the lower profile split, so that the damping particles are effectively filled in the side filling sections of the upper profile split and the lower profile split according to the space filling rate k2;

[0018] S7, the upper profile and the lower profile are connected into a whole by a set of connecting mechanisms.

[0019] In step S4, driving the first partition block to move between the upper profile section, the bottom filling section of the lower profile section, and the side filling section includes:

[0020] A sealing cover plate is fixed to the top of the side filling section of the upper profile section and the lower profile section by means of a cylinder clamping. The sealing cover plate is provided with a pressure pipe connected to the side filling section of the upper profile section and the lower profile section and a laser rangefinder sensor for ranging. The pressure pipe is connected to the corresponding air compressor and the laser rangefinder sensor is connected to the corresponding electrical controller. The working process of the vibration source of the workbench, the cylinder, and the air compressor are all controlled by the electrical controller.

[0021] The air compressor is started to inject compressed air into the upper side of the first partition block to apply pressure to the upper part of the first partition block. The initial pressure is 0.5 MPa and is set to increase in increments of 0.2-0.6 MPa / s.

[0022] At the same time, the vibration source is controlled to start so as to vibrate the upper profile split and the lower profile split fixed on the workbench. The vibration frequency of the vibration source is not less than 1500Hz.

[0023] When the laser rangefinder detects that the first partition block has moved between the bottom filling section and the side filling section, it controls the vibration source and air compressor to stop operating, and controls the piston shaft of the cylinder to retract and reset.

[0024] In step S6, driving the second partition block to move to the end of the side filling section of the upper profile segment and the lower profile segment includes:

[0025] The sealing cover plates are fixed to the top of the side filling sections of the upper profile split and the lower profile split by means of cylinder clamping;

[0026] The air compressor is started to inject compressed air into the upper side of the second partition block to apply pressure to the upper part of the second partition block. The initial pressure is 0.5 MPa and is set to increase in increments of 0.2-0.6 MPa / s.

[0027] At the same time, the vibration source is controlled to start so as to vibrate the upper profile split and the lower profile split fixed on the workbench. The vibration frequency of the vibration source is not less than 1500Hz.

[0028] When the laser rangefinder detects that the second partition block has moved to the end of the side filling section, it controls the vibration source and air compressor to stop operating, and controls the piston shaft of the cylinder to retract and reset.

[0029] The connecting mechanism includes a connector connected to the damping particle filling space of the hollow cavity and a connecting rod connected to the side of the hollow cavity that does not have a damping particle filling space. The connector has a plurality of damping particle filling grooves, which are filled with damping particles, and the outer sealing device of the damping particle filling groove has a corresponding sealing plate.

[0030] In step S7, connecting the upper profile and the lower profile into a whole through a set of connecting mechanisms includes:

[0031] One end of the connector and the connecting rod are pre-fixed to the upper profile body by bolt locking.

[0032] The upper profile is detached from the workbench and flipped downwards to connect with the lower profile, so that the other ends of the connector and connecting rod are respectively inserted into the corresponding positions of the hollow cavity of the lower profile.

[0033] Then, the other ends of the connector and connecting rod are fixed to the lower profile body by bolt tightening.

[0034] After the connector is installed in place, its two ends are respectively pressed against the outer ends of the upper profile split and the second partition block of the lower profile split.

[0035] Both the first partition block and the second partition block are made of aluminum alloy. The inner and outer sides of the first partition block and the second partition block are integrally formed and have a top tightening protrusion in the shape of a frustum. The height of the top tightening protrusion is less than the diameter of the damping particle.

[0036] The damping particles include, but are not limited to, iron-based damping particles.

[0037] Advantages of this invention:

[0038] 1) This invention first symmetrically divides the window frame profile into an upper profile section and a lower profile section, and further divides the upper and lower profile sections into bottom filling sections and side filling sections. Damping particles are then sequentially filled into the bottom filling section. Next, a first partition block is driven to the interval between the bottom and side filling sections of the upper and lower profile sections, allowing damping particles to effectively fill the side filling sections of the upper and lower profile sections according to a space filling rate k2. Damping particles are then filled into the side filling sections. Next, a second partition block is driven to the end of the side filling sections of the upper and lower profile sections, allowing damping particles to effectively fill the side filling sections of the upper and lower profile sections according to a space filling rate k2. Finally, a set of connecting mechanisms connects the upper and lower profile sections into a whole, effectively filling the damping particles at different locations in segments.

[0039] The first and second partition blocks are installed using a cold-shrink assembly method and driven within 20 seconds to ensure the smooth assembly of the first and second partition blocks. This ensures that after assembly, the first and second partition blocks, once at room temperature, can effectively position and isolate the damping particles after segmented filling, thereby reducing the downward deposition space of the damping particles on the upper side. This maintains the filling stability of the damping particles in the bottom and side filling sections for a long time, effectively improving the vibration reduction and noise reduction effect of the window frame profiles used for high-speed rail side windows.

[0040] 2) During the driving movement of the first and second partition blocks, the present invention uses a pressurization method to compress the first and second partition blocks, thereby enhancing their driving effect on the damping particles. Simultaneously, the damping particles are vibrated at a frequency of not less than 1500Hz during the compression process, allowing the damping particles to be compressed and distributed more quickly, thus further significantly improving the driving effect of the first and second partition blocks on the damping particles. This not only significantly shortens the filling time of the damping particles but also increases the space filling rates k1 and k2 of the damping particles in the bottom filling section and the side filling section to over 92% within 20 seconds.

[0041] It can increase the filling amount of damping particles and further significantly reduce the downward deposition space of damping particles located on the upper side, so as to maintain the filling stability of damping particles in the bottom filling section and the side filling section for a long time, thereby effectively improving the vibration reduction and noise reduction effect of window frame profiles used for high-speed rail side windows.

[0042] 3) If the first and second partition blocks are initially pressurized with a large pressure, the initial pushing force of the first and second partition blocks on the damping particles will be relatively large. This will cause the damping particles near the first and second partition blocks to be rapidly squeezed and stacked into clumps, thereby rapidly increasing the resistance to movement of the damping particles and the cavity, which will increase the difficulty of subsequent pushing of the damping particles. Furthermore, when the first and second partition blocks are assembled using a cold-shrink assembly method, there is a gap fit between the first and second partition blocks and the damping particle filling space. If a constant pressure is applied to the first and second partition blocks, the compressed air in this process will continuously flow along the gap between the first and second partition blocks and the damping particle filling space. Therefore, during the process of applying a relatively large constant pressure to the first and second partition blocks, the pressure actually changes in a decreasing trend. As a result, the thrust of the first and second partition blocks on the damping particles will evolve from being larger at the beginning (which increases the difficulty of pushing the damping particles) to weakening thereafter. This will further increase the difficulty of pushing the damping particles, ultimately making it impossible to effectively drive the first and second partition blocks into place in a short period of time.

[0043] Therefore, when applying pressure to the upper parts of the first and second partition blocks, the initial pressure is 0.5 MPa, and the pressure is increased in increments of 0.2-0.6 MPa / s. This effectively creates a progressively increasing thrust to push the damping particles during vibration. Actual processing and verification have confirmed that this invention can complete the filling of the space with damping particles with a filling rate of no less than 92% within 20 seconds, thus effectively ensuring the practical effect of this invention.

[0044] 4) The connecting mechanism of this invention includes a connector connected to the damping particle filling space of the hollow cavity and a connecting rod connected to the side of the hollow cavity without the damping particle filling space, thereby achieving a stable connection between the upper profile and the lower profile. Simultaneously, the connector of this invention has several damping particle filling grooves filled with damping particles. This ensures that the connection between the upper and lower profiles after assembly has a reasonable and sufficient vibration reduction and noise reduction effect.

[0045] 5) Most importantly, after the connector of the present invention is installed in place, its two ends are respectively in a tight-fitting state abutting against the outer ends of the second partition blocks of the upper and lower profile sections. This is because the first and second partition blocks of the present invention are installed using a cold-shrink assembly method, and the driving movement time of the first and second partition blocks is controlled within 20 seconds, thereby significantly shortening the construction time of the present invention. Therefore, after the damping particles, the first partition block, and the second partition block are assembled, the first and second partition blocks are still in the cold-shrink process. At this time, installing the connector in place not only greatly improves the construction efficiency of the present invention, but also effectively limits the second partition block, so that the first and second partition blocks, which subsequently recover their shape, can further compress the damping particles, thereby making the actual space filling rate of the damping particles greater than the design value, so as to further increase the filling amount of the damping particles and further maintain the filling stability of the damping particles in the bottom filling section and the side filling section, thereby effectively improving the vibration reduction and noise reduction effect of the window frame profile for high-speed rail side windows.

[0046] 6) Both the first and second partition blocks of this invention are made of aluminum alloy. The inner and outer surfaces of the first and second partition blocks are integrally formed and have outwardly arranged frustum-shaped clamping protrusions. After assembly, the clamping protrusions of the first and second partition blocks clamp against the outer wall and partition plate of the damping particle filling space, respectively. This not only ensures the installation stability of the first and second partition blocks but also reduces the contact area between the first and second partition blocks and the cavity, thereby significantly reducing the amount of vibration and noise transmitted along the first and second partition blocks, further improving the practical effect of this invention.

[0047] 7) Testing showed that the sound insulation of the high-speed rail side window frame profile prepared by this invention is superior to that of high-speed rail side window frame profiles using ordinary filling methods and those using damping material filling methods with individual vibration in the 1 / 3 octave band center frequency range of 50-1000Hz. Furthermore, after 480 hours of normal operation on a high-speed train, the sound insulation of the high-speed rail side window frame profile prepared by this invention remains almost unchanged in the 1 / 3 octave band center frequency range of 50-1000Hz. Experimental verification demonstrates that the high-speed rail side window frame profile prepared by this invention has excellent sound insulation performance and can maintain the filling stability of damping particles in the bottom and side filling sections for a long time, thereby effectively improving the vibration reduction and noise reduction effect of the high-speed rail side window frame profile. Attached Figure Description

[0048] Figure 1 This is a schematic diagram of the process of the present invention.

[0049] Figure 2 This is a schematic diagram of the structure of a window frame profile after being filled with damping particles according to the present invention.

[0050] Figure 3 for Figure 2 A sectional view.

[0051] Figure 4 This is a schematic diagram of the split structure of the lower profile.

[0052] Figure 5 for Figure 4 A sectional view.

[0053] Figure 6 for Figure 5 Enlarged views of specific sections.

[0054] Figure 7 This is a schematic diagram of the installation of the lower profile split device on the workbench.

[0055] Figure 8 for Figure 7 A magnified view of a portion of the image.

[0056] Figure 9 A structural diagram showing a connecting mechanism between the upper and lower profile sections.

[0057] Figure 10 Sound insulation curves of window frame profiles for high-speed railway side windows prepared with different damping particle filling methods.

[0058] Figure 11 The sound insulation curves of the high-speed rail side window frame profile prepared according to the present invention before and after operation are shown. Detailed Implementation

[0059] To facilitate understanding by those skilled in the art, the structure of the present invention will now be described in further detail with reference to the accompanying drawings:

[0060] refer to Figure 1-9 A method for preparing a window frame profile for a high-speed railway side window, wherein the window frame profile 1 is square in shape, and the four corners of the window frame profile 1 are respectively arc-shaped. The window frame profile 1 is composed of an upper profile section 101 and a lower profile section 102 arranged symmetrically. A hollow cavity 2 is provided on the upper profile section 101 and the lower profile section 102 respectively. A partition plate 3 is provided in the middle of the hollow cavity 2 to divide the outer side of the hollow cavity 2 into a damping particle filling space 201. The damping particle filling method includes the following specific steps:

[0061] S1, fix one long side of the upper profile split 101 and the lower profile split 102 to the workbench 5 equipped with the vibration source 4, so that the two sides of the upper profile split 101 and the lower profile split 102 are respectively set upwards.

[0062] S2, the damping particle filling space 201 of the upper profile split 101 and the lower profile split 102 is divided into a bottom filling section 2011 and a set of side filling sections 2012 disposed on both sides of the bottom filling section 2011. The bottom filling section 2011 is a long side section installed on the workbench and an arc-shaped section connected to the long side section. The side filling sections 2012 are the two sides of the upper profile split 101 and the lower profile split 102. The bottom of the side filling section 2012 is spaced apart from the bottom filling section 2011. The top of the side filling section 2012 is located 3cm below the top of both sides of the upper profile split 101 and the lower profile split 102.

[0063] S3, damping particles are filled into the bottom filling sections 2011 of the upper profile segment 101 and the lower profile segment 102, respectively. The damping particles are glass damping particles, and the damping particles are spherical damping particles with a diameter of 2mm and a density ρ=2.5g / cm³.

[0064] The cross-sectional area of ​​the damping particle filling space 201 is set to S=207mm², the length of the bottom filling section 2011 is L1=1605mm, the filling rate of the damping particle space in the bottom filling section 2011 is k1=92.3%, and the density of the glass damping particles is ρ=2.5g / cm³. The damping particle filling weight of the bottom filling section 2011 is calculated to be G1=S*L1*k1*ρ=767g.

[0065] Weigh out damping particles with a weight of G1, and add them quantitatively into the damping particle filling space 201 of the upper profile section 101 and the lower profile section 102 through the opening of the side filling section 2012.

[0066] S4. The corresponding first partition block 6 is assembled to both sides of the upper profile split 101 and the lower profile split 102 using the cold shrink assembly method. The cold shrink assembly method is existing technology, and its process will not be described in detail here.

[0067] A sealing cover 7 is fixed to the top of the side filling section 2012 of the upper profile section 101 and the lower profile section 102 by a cylinder 12. The sealing cover 7 is provided with a pressure pipe 8 that connects to the side filling section of the upper profile section 101 and the lower profile section 102, and a laser rangefinder 9 for ranging. The pressure pipe 8 is connected to the corresponding air compressor 10, and the laser rangefinder 9 is connected to the corresponding electrical controller 11. The working process of the vibration source 4, cylinder 12, and air compressor 10 of the workbench 5 is controlled by the electrical controller 11. In this embodiment, the electrical controller 11 is a PLC programmable encoder, and the vibration source 4 is a vibration motor.

[0068] The air compressor 10 is started to inject compressed air into the upper side of the first partition block 6 to apply pressure to the upper part of the first partition block 6. The initial pressure value is 0.5 MPa and is set to increase in increments of 0.5 MPa / s.

[0069] At the same time, the vibration source 4 is activated to vibrate the upper profile split 101 and the lower profile split 102 fixed on the workbench 5. The vibration frequency of the vibration source is 1800Hz.

[0070] After 18.3s and 18.6s, the laser ranging sensor 9 detected that the first partition block 6 had moved to the bottom filling section 2011 and the side filling section 2012 of the upper profile split 101 and the lower profile split 102, respectively. The vibration source 4 and the air compressor 10 were controlled to stop operating, and the piston shaft of the cylinder 12 was controlled to retract and reset, so that the damping particles were effectively filled in the bottom filling section 2011 of the upper profile split 101 and the lower profile split 102 at a space filling rate of k1=92.3%.

[0071] S5, damping particles are filled into the side filling sections 2012 of the upper profile section 101 and the lower profile section 102 respectively:

[0072] The length of the side filling section 2012 is set to L2=255mm, and the damping particle space filling rate in the side filling section 2012 is k2=92.6%. The damping particle filling weight of the side filling section 2012 is calculated to be G2=S*L2*k2*ρ=122g.

[0073] Weigh out damping particles with a weight of G2, and add them quantitatively into the damping particle filling space 201 of the upper profile section 101 and the lower profile section 102 through the opening of the side filling section 2012.

[0074] S6, the corresponding second partition block 13 is assembled to the top of the side filling section 2012 of the upper profile split 101 and the lower profile split 102 respectively by using the cold shrink assembly method;

[0075] The sealing cover plate 7 is fixed to the top of the side filling section 2012 of the upper profile split 101 and the lower profile split 102 by means of the cylinder 12;

[0076] The air compressor 10 is started to inject compressed air into the upper side of the second partition block 13 to apply pressure to the upper part of the second partition block 13. The initial pressure value is 0.5 MPa and is set to increase in increments of 0.5 MPa / s.

[0077] At the same time, the vibration source 4 is activated to vibrate the upper profile 101 and lower profile 102 fixed on the workbench 5. The vibration frequency of the vibration source 4 is 1800Hz.

[0078] After 9.6s and 9.5s, the laser ranging sensor 9 detected that the second partition block 13 had moved to the end of the side filling section 2012 of the upper profile split 101 and the lower profile split 102, respectively. The vibration source 4 and the air compressor 10 were controlled to stop operating, and the piston shaft of the cylinder 12 was controlled to retract and reset, so that the damping particles were effectively filled in the side filling section 2012 of the upper profile split 101 and the lower profile split 102 at a space filling rate of k2=92.6%.

[0079] S7, the upper profile split 101 and the lower profile split 102 are connected into a whole by a set of connecting mechanisms 14.

[0080] The connecting mechanism 14 includes a connector 1401 connected to the damping particle filling space 201 of the hollow cavity 2 and a connecting rod 1402 connected to the side of the hollow cavity 2 that does not have a damping particle filling space 201. The connector 1401 has a plurality of damping particle filling grooves, which are filled with damping particles, and the outer sealing device of the damping particle filling groove has a corresponding sealing plate (not marked).

[0081] In step S7, connecting the upper profile section 101 and the lower profile section 102 into a whole through a set of connecting mechanisms 14 includes:

[0082] One end of the connector 1401 and the connecting rod 1402 are respectively pre-fixed to the upper profile body 101 by bolt locking;

[0083] The upper profile split 101 is removed from the workbench 5 and flipped downwards to connect with the lower profile split 102, so that the other ends of the connector 1401 and the connecting rod 1402 are respectively inserted into the corresponding positions of the hollow cavity 2 of the lower profile split 102.

[0084] Then, the other ends of the connector 1401 and the connecting rod 1402 are respectively fixed to the lower profile body 102 by bolt tightening.

[0085] After the connector 1401 is installed in place, its two ends are respectively pressed against the outer ends of the second partition block 13 of the upper profile split 101 and the lower profile split 102.

[0086] Both the first partition block 6 and the second partition block 13 are made of aluminum alloy. The inner and outer sides of the first partition block 6 and the second partition block 13 are integrally formed and have a top tightening protrusion 15 in the shape of a frustum. The height of the top tightening protrusion 15 is less than the diameter of the damping particle.

[0087] Experimental data:

[0088] (I) Sound insulation tests were conducted in an acoustic reverberation laboratory on the high-speed rail side window frame profiles prepared in the above embodiments, the high-speed rail side window frame profiles directly filled with damping particles using a simple addition method (space fill rate 75.32%), and the high-speed rail side window frame profiles filled with damping particles after vibration at 1800Hz for 1 minute (space fill rate 89.67%). The resulting sound insulation curves are as follows: Figure 10 As shown, according to Figure 10 It can be seen that the sound insulation of the high-speed rail side window frame prepared in the above embodiments is better than that of the high-speed rail side window frame profile with ordinary filling method and damping material filling method with single vibration method in the range of 50-1000Hz center frequency of 1 / 3 octave band.

[0089] (II) The high-speed rail side window frame profile prepared according to this invention is fixed on a high-speed train. After 480 hours of normal operation of the high-speed train, the sound insulation of the high-speed rail side window frame profile prepared in the above embodiment is tested again in an acoustic reverberation test chamber. The resulting sound insulation curve is as follows: Figure 11 As shown, according to Figure 11 It can be seen that after the high-speed rail side window frame profile prepared in the above embodiment has been running normally on a high-speed train for 480 hours, its sound insulation in the range of 50-1000Hz center frequency in 1 / 3 octave band is almost unchanged.

[0090] Experimental results show that the window frame profile for high-speed rail side windows prepared by this invention has excellent sound insulation performance and can maintain the filling stability of damping particles in the bottom filling section and side filling section for a long time, thereby effectively improving the vibration reduction and noise reduction effect of the window frame profile for high-speed rail side windows.

[0091] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A method for manufacturing a window frame profile for a high-speed railway side window, wherein the window frame profile is square in shape, with arc-shaped corners at each of its four sides, and is composed of an upper profile section and a lower profile section arranged symmetrically, each of the upper and lower profile sections having a hollow cavity, and a partition plate in the middle of the hollow cavity for dividing the outer side of the hollow cavity into a space for damping particles to fill, characterized in that... The damping particle filling method comprises the following specific steps: S1, respectively fixing the long side of the upper profile body and the long side of the lower profile body to the workbench provided with a vibration source, so that the two sides of the upper profile body and the two sides of the lower profile body are respectively arranged upwards; S2, dividing the damping particle filling space of the upper profile body and the lower profile body into a bottom filling section and a group of side filling sections arranged on both sides of the bottom filling section, the bottom filling section being a long side section arranged on the workbench and an arc section connected to the long side section, and the side filling section being the two side sections of the upper profile body and the lower profile body, the bottom of the side filling section being arranged in a spaced manner between the bottom filling section, and the top of the side filling section being located at least 3 cm below the top of the two sides of the upper profile body and the lower profile body; S3, respectively filling damping particles in the bottom filling section of the upper profile body and the lower profile body: The cross-sectional area of the damping particle filling space is S, the length of the bottom filling section is L1, the damping particle space filling rate in the bottom filling section is k1, the density of the damping particles is p, and the damping particle filling weight G1 of the bottom filling section is calculated as S*L1*k1*P; The damping particles with a weight of G1 are weighed, and the damping particles with a weight of G1 are respectively quantitatively added to the damping particle filling space of the upper profile body and the lower profile body through the openings of the side filling sections; S4, respectively assembling the corresponding first partition blocks to the two sides of the upper profile body and the lower profile body by using a cold shrink assembly method, and driving the first partition blocks to move between the interval between the bottom filling section and the side filling section of the upper profile body and the lower profile body at 20S, so that the damping particles are filled in the bottom filling section of the upper profile body and the lower profile body according to the space filling rate k1; S5, respectively filling damping particles in the side filling section of the upper profile body and the lower profile body: The length of the side filling section is L2, the damping particle space filling rate in the side filling section is k2, and the damping particle filling weight G2 of the side filling section is calculated as S*L2*k2*P; The damping particles with a weight of G2 are weighed, and the damping particles with a weight of G2 are respectively quantitatively added to the damping particle filling space of the upper profile body and the lower profile body through the openings of the side filling sections; S6, respectively assembling the corresponding second partition blocks to the top of the side filling section of the upper profile body and the lower profile body by using a cold shrink assembly method, and driving the second partition blocks to move to the end of the side filling section of the upper profile body and the lower profile body at 20S, so that the damping particles are effectively filled in the side filling section of the upper profile body and the lower profile body according to the space filling rate k2; S7, connecting the upper profile body and the lower profile body into a whole through a group of connection mechanisms.

2. A method of manufacturing a window frame profile for high-iron side windows according to claim 1, characterized in that, In step S4, the first partition block is driven to move between the bottom filling section and the side filling section of the upper profile body and the lower profile body, which comprises: The sealing cover plate is fixed on the top of the side filling section of the upper profile segment and the lower profile segment by the air cylinder pressing mode, the sealing cover plate is provided with a pressurizing pipe and a laser ranging sensor for distance measurement, the pressurizing pipe is connected to the corresponding air compressor, the laser ranging sensor is connected to the corresponding electric controller, and the vibration source of the workbench, the air cylinder and the working process of the air compressor are controlled by the electric controller; The air compressor is controlled to start, and compressed air is injected into the upper side of the first partition block to press the upper part of the first partition block, and the initial pressure value is 0.5 Mpa, and the pressure is increased at a rate of 0.2-0.6 Mpa / s; At the same time, the vibration source is controlled to start to vibrate the upper profile segment and the lower profile segment fixed on the workbench, and the vibration frequency of the vibration source is not less than 1500 Hz; When the laser ranging sensor for distance measurement detects that the first partition block moves to the bottom filling section and the side filling section, the vibration source and the air compressor are controlled to stop, and the piston shaft of the air cylinder is controlled to retract and reset.

3. A method of manufacturing a window frame profile for high-iron side windows according to claim 2, characterized in that, In step S6, the second partition block is driven to move to the end of the side filling section of the upper profile segment and the lower profile segment, including: The sealing cover plate is fixed on the top of the side filling section of the upper profile segment and the lower profile segment by the air cylinder pressing mode; The air compressor is controlled to start, and compressed air is injected into the upper side of the second partition block to press the upper part of the second partition block, and the initial pressure value is 0.5 Mpa, and the pressure is increased at a rate of 0.2-0.6 Mpa / s; At the same time, the vibration source is controlled to start to vibrate the upper profile segment and the lower profile segment fixed on the workbench, and the vibration frequency of the vibration source is not less than 1500 Hz; When the laser ranging sensor for distance measurement detects that the second partition block moves to the end of the side filling section, the vibration source and the air compressor are controlled to stop, and the piston shaft of the air cylinder is controlled to retract and reset.

4. A method of manufacturing a window frame profile for high-iron side windows according to claim 1, characterized in that, The connecting member is installed in the hollow cavity of the upper profile segment and the lower profile segment, and the connecting member is provided with a plurality of damping particle filling grooves, and the damping particle filling grooves are filled with damping particles.

5. A method of manufacturing a window frame profile for high-iron side windows according to claim 4, characterized in that, In step S7, the upper profile segment and the lower profile segment are connected into a whole by a group of connecting mechanisms, including: The connecting member and the connecting rod are respectively pre-fixed to the upper profile segment by the bolt locking mode; The upper profile segment is detached from the workbench, and is turned down to abut against the lower profile segment, so that the other end of the connecting member and the connecting rod are respectively inserted into the corresponding position of the hollow cavity of the lower profile segment; The other end of the connecting member and the connecting rod are respectively fixed to the lower profile segment by the bolt locking mode.

6. A method of manufacturing a window frame profile for high-iron side windows according to claim 5, characterized in that, After the connecting member is installed, the two ends thereof are respectively in a top pressing state and abut against the outer end of the second partition block of the upper profile segment and the lower profile segment.

7. A method of manufacturing a window frame profile for high-iron side windows according to claim 1, characterized in that, The first partition block and the second partition block are made of aluminum alloy material, and the inner and outer sides of the first partition block and the second partition block are integrally formed with outwardly arranged top tight convex points in the shape of a circular truncated cone, and the height of the top tight convex points is less than the diameter of the damping particles.

8. A method of manufacturing a window frame profile for high-iron side windows according to claim 1, characterized in that, The damping particles include, but are not limited to, glass damping particles.

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