Fan blade test bed and loading device track capable of improving tensile bearing capacity

Abstract

The utility model discloses a fan blade test bed and a loading device track capable of improving tensile bearing capacity, and belongs to the technical field of fan blade performance test equipment. The bearing platform main body is provided with a pouring groove; a rail is arranged in the pouring groove, and the two side walls of the pouring groove are sunken in the direction away from the interior of the pouring groove. The two side walls of the pouring groove are both in a V shape. Reinforcing ribs are pre-arranged in the bearing platform main body and close to the side wall of the pouring groove; the extending track of the reinforcing rib is consistent with the side wall of the pouring groove in shape; the side wall of the pouring groove is arranged to be of a V-shaped concave structure, so that after pouring work is completed, when a rail in a pouring layer is subjected to vertical upward pulling force, structural support is provided for the bearing platform body to firmly limit the pouring layer in the pouring groove; therefore, the overall tensile bearing capacity is effectively improved, the corresponding step for fastening the track and the bearing platform body is omitted, and then the installation efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of fan blade performance testing equipment, and particularly relates to a fan blade test bench and a loading device track capable of improving tensile bearing capacity. Background Art

[0002] In the existing fan blade test bench, a ground anchoring device is used as a connection point for vertical tensile loading. The ground anchoring device is anchored on the track of the blade loading device, and a control motor is used to pull a loading cable to adjust the loading load of the blade. During use, whether the track connection structure of the blade loading device is reliably stressed is the key to the structural safety of the test bench; the larger the size of the blade to be detected, the higher the requirement for the loading capacity of the blade test bench.

[0003] However, the tracks used in the current fan blade test benches not only take a long time and effort to install, but also have weak bearing capacity of the anti-pulling structure after pouring, so they cannot well withstand the vertical tensile force generated during the fan blade test. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is: how to provide a fan blade test bench and its loading device track, which can not only improve the overall installation efficiency, but also improve the anti-pulling bearing capacity of the track, so as to meet the performance detection requirements of large-capacity fan blades.

[0005] In order to solve the above technical problems, the technical scheme adopted by the utility model is:

[0006] A loading device track capable of improving tensile bearing capacity includes a bearing platform main body; a pouring groove is provided on the bearing platform main body; a track is provided in the pouring groove, and both side walls of the pouring groove are recessed in a direction away from the inside of the pouring groove;

[0007] Both side walls of the pouring groove are in a V shape;

[0008] Reinforcing ribs are preset in the bearing platform main body and close to the side walls of the pouring groove;

[0009] The extending trajectory of the reinforcing ribs is the same as the shape of the side walls of the pouring groove.

[0010] Furthermore, the track includes a first channel steel, a second channel steel and a third channel steel connected in sequence;

[0011] The lower flange of the first channel steel and the lower flange of the third channel steel are respectively arranged at the notch of the second channel steel;

[0012] The notch direction of the second channel steel is the same as the notch direction of the pouring groove;

[0013] The notch of the first channel steel and the notch of the third channel steel are respectively arranged opposite to the side walls of the corresponding casting grooves;

[0014] There is a spacing between the bottom of the first channel steel and the bottom of the third channel steel.

[0015] Furthermore, the spacing between the bottom of the first channel steel and the bottom of the third channel steel is smaller than the groove spacing of the second channel steel.

[0016] Furthermore, the depth of the side wall of the first channel steel close to the notch of the casting groove is smaller than the depth of the side wall of the first channel steel far from the notch of the casting groove;

[0017] The depth of the side wall of the third channel steel close to the notch of the casting groove is smaller than the depth of the side wall of the third channel steel far from the notch of the casting groove.

[0018] Furthermore, it further includes stiffening ribs;

[0019] The stiffening ribs are arranged inside the first channel steel or inside the third channel steel;

[0020] The bottom of the first channel steel and the side wall of the first channel steel far from the notch of the casting groove are connected by the stiffening ribs;

[0021] The bottom of the third channel steel and the side wall of the third channel steel far from the notch of the casting groove are connected by the stiffening ribs.

[0022] Furthermore, it further includes vertical steel bars;

[0023] Vertical steel bars are arranged on both sides in the extending direction of the track;

[0024] One end of the vertical steel bar penetrates through the bottom of the casting groove and is preset in the main body of the bearing platform.

[0025] Furthermore, it further includes horizontal steel bars;

[0026] The extending direction of the horizontal steel bars is parallel to the extending direction of the casting groove;

[0027] The vertical steel bars on the same side are connected by the horizontal steel bars.

[0028] Furthermore, it further includes a casting layer;

[0029] When the track is assembled with the main body of the bearing platform, the casting layer is filled between the track and the main body of the bearing platform.

[0030] Furthermore, there is also provided a fan blade test bench, including a fan blade positioning seat, a cable, a ground anchoring device, and the loading device track capable of improving the tensile bearing capacity as described above;

[0031] The fan blade positioning seat is arranged on the working surface of the main body of the bearing platform;

[0032] The positioning seat of the fan blade is arranged at one end in the length direction of the track of the loading device that can improve the tensile bearing capacity;

[0033] The ground anchoring device is slidably connected with the track of the loading device that can improve the tensile bearing capacity;

[0034] When the fan blade to be detected is connected to the positioning seat of the fan blade, the track of the loading device that can improve the tensile bearing capacity and the fan blade to be detected are located in the same vertical plane, and the fan blade to be detected is connected to the ground anchoring device through a cable.

[0035] Furthermore, the number of the tracks of the loading device that can improve the tensile bearing capacity is at least three;

[0036] In the width direction of the fan blade to be detected, the tracks of the loading device that can improve the tensile bearing capacity are arranged at intervals.

[0037] The beneficial effect of the present utility model lies in that: the track of the loading device that can improve the tensile bearing capacity provided by the present utility model makes a specific transformation on the structure of the pouring groove. By setting the side wall of the pouring groove into a concave structure such as a V shape, after the pouring work is completed, when the track in the pouring layer is subjected to an upward vertical pulling force, the main body of the bearing platform can firmly limit the pouring layer in the pouring groove to provide structural support; thereby effectively improving the overall tensile bearing capacity, and omitting the corresponding steps for fastening the track and the main body of the bearing platform, and further improving the installation efficiency. Brief Description of the Drawings

[0038] Figure 1 The figure shows a schematic structural view of the track of the specific embodiment of the present utility model;

[0039] Figure 2 The figure shows a schematic structural view of the track of the loading device that can improve the tensile bearing capacity of the specific embodiment of the present utility model;

[0040] Figure 3 The figure shows a schematic structural view of the track of the loading device that can improve the tensile bearing capacity (when filled with a pouring layer) of the specific embodiment of the present utility model;

[0041] Figure 4 The figure shows a schematic structural view of another track of the loading device that can improve the tensile bearing capacity (when filled with a pouring layer) of the specific embodiment of the present utility model;

[0042] Figure 5 The figure shows a schematic structural view of the fan blade test bench of the specific embodiment of the present utility model;

[0043] Label Description:

[0044] 1. Cap body; 11. Casting trough; 12. Reinforcement ribs;

[0045] 2. Track; 21. First channel steel; 22. Second channel steel; 23. Third channel steel; 24. Stiffening rib;

[0046] 3. Vertical reinforcement;

[0047] 4. Transverse reinforcement;

[0048] 5. Casting layer;

[0049] 6. Fan blade test bench; 61. Fan blade positioning seat; 62. Cable; 63. Ground anchoring device;

[0050] 7. Fan blade body. DETAILED DESCRIPTION

[0051] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0052] The most critical concept of the utility model is that by setting the side wall of the casting trough into a V-shaped recessed structure, after the casting work is completed, when the track in the casting layer is subjected to vertical upward pulling force, the pedestal body can provide structural support to firmly confine the casting layer in the casting trough; thereby effectively improving the overall tensile bearing capacity, and because the step of fastening the track and the pedestal body is omitted, the overall installation efficiency can also be improved.

[0053] Please refer to Figures 1 to 5 The utility model provides a loading device track capable of improving tensile bearing capacity, comprising a base body 1; the base body 1 is provided with a casting trough 11; a track 2 is provided in the casting trough 11, and both side walls of the casting trough 11 are recessed in a direction away from the inside of the casting trough 11;

[0054] Both side walls of the casting trough 11 are V-shaped;

[0055] A reinforcing rib 12 is preset in the base body 1 and close to the side wall of the casting trough 11;

[0056] The extension trajectory of the reinforcing rib 12 is consistent with the shape of the side wall of the casting trough 11.

[0057] Specifically, the shape of the side wall of the casting trough 11 can be adaptively adjusted according to actual needs, that is, the direction of the depression on the side wall of the casting trough 11 can be far away from the inside of the casting trough 11. In addition to the V-shaped depression, other shapes can also be used. Figure 4 The trapezoidal recessed structure shown in .

[0058] As can be seen from the above description, the beneficial effects of the present utility model are as follows: A loading device track capable of improving the tensile bearing capacity is provided. By setting the side wall of the pouring groove 11 into a V-shaped concave structure, after the pouring work is completed, the later-poured pouring structure can be vertically clamped with the pouring groove 11. When the track 2 in the pouring layer 5 is subjected to an upward vertical tensile force, it provides structural support for the pile cap main body 1 to firmly limit the pouring layer 5 in the pouring groove 11; compared with the traditional loading device track, it can not only effectively improve the overall tensile bearing capacity, but also significantly improve the overall installation efficiency because the steps for fastening the track 2 to the pile cap main body 1, such as connection methods like welding or tying, are omitted, and corresponding labor costs can also be saved.

[0059] Further, the track 2 includes a first channel steel 21, a second channel steel 22, and a third channel steel 23 that are connected in sequence;

[0060] The lower flanges of the first channel steel 21 and the third channel steel 23 are respectively arranged at the ends of the second channel steel 22 close to its own notch;

[0061] The notch direction of the second channel steel 22 is the same as the notch direction of the pouring groove 11;

[0062] The notches of the first channel steel 21 and the third channel steel 23 are respectively arranged opposite to the side walls of the corresponding pouring grooves 11;

[0063] There is a gap between the bottom of the first channel steel 21 and the bottom of the third channel steel 23.

[0064] Further, the gap between the bottom of the first channel steel 21 and the bottom of the third channel steel 23 is smaller than the notch spacing of the second channel steel 22.

[0065] Specifically, the distance between the bottom of the first channel steel 21 and the bottom of the third channel steel 23 is α in Figure 1 ; the notch spacing of the second channel steel 22 is β in Figure 1 ; the lower flanges of the first channel steel 21 and the third channel steel 23 are both one side wall of the first channel steel 21 or the third channel steel 23; and the lower flanges of the first channel steel 21 and the third channel steel 23 are both connected to the ends of the second channel steel 22 close to its own notch by bolts.

[0066] As can be seen from the above description, this design makes specific modifications to the composition structure of the track 2 to ensure that the track 2 structure composed of the first channel steel 21, the second channel steel 22, and the third channel steel 23 can meet the subsequent requirements of the pull-out test and avoid affecting the normal detection work due to structural problems.

[0067] Further, the depth of the side wall of the first channel steel 21 close to the notch of the pouring groove 11 is less than the depth of the side wall of the first channel steel 21 far from the notch of the pouring groove 11;

[0068] The depth of the side wall of the third channel steel 23 close to the notch of the casting trough 11 is less than the depth of the side wall of the third channel steel 23 away from the notch of the casting trough 11 .

[0069] As can be seen from the above description, the design further optimizes the structure of the first channel steel 21 and the third channel steel 23, so that the two side walls of the first channel steel 21 and the two side walls of the second channel steel 22 have a drop in depth, and ensure that the side wall depth of the two channel steels close to the notch of the casting trough 11 ( Figure 1 The γ in the figure is less than the side wall depth of the notch of the two channel steels away from the casting trough 11 ( Figure 1 δ in ), so that the cast track 2 can produce a certain limiting effect when subjected to vertical upward tension, thereby improving the pull-out bearing capacity of the track 2.

[0070] Furthermore, the above-mentioned loading device track capable of improving tensile bearing capacity further includes a stiffening rib 24;

[0071] The stiffening rib 24 is arranged inside the first channel steel 21 or inside the third channel steel 23;

[0072] The bottom of the first channel steel 21 and the side wall of the notch of the first channel steel 21 away from the casting trough 11 are connected by a stiffening rib 24;

[0073] The bottom of the third channel steel 23 and the side wall of the notch of the third channel steel 23 away from the casting trough 11 are connected by the stiffening rib 24 .

[0074] It can be seen from the above description that by arranging corresponding stiffening ribs 24 inside the first channel steel 21 and the third channel steel 23, the overall strength of the first channel steel 21 and the third channel steel 23 can be effectively improved, and the pull-out bearing capacity of the track 2 can be avoided from being affected by deformation; at the same time, because the trough structure of the casting trough 11 can play a certain limiting role in the vertical direction of the post-cast structure, and the side wall depth of the first channel steel 21 and the side wall depth of the third channel steel 23 both have a certain drop in the depth direction of the casting trough 11, it is only necessary to arrange corresponding stiffening ribs 24 between the bottom of the first channel steel 21 and the side wall of the notch of the first channel steel 21 away from the casting trough 11, and between the bottom of the third channel steel 23 and the side wall of the notch of the third channel steel 23 away from the casting trough 11, thereby achieving the effect of both improving the overall strength and saving materials.

[0075] Furthermore, the above-mentioned loading device track capable of improving tensile bearing capacity further comprises vertical steel bars 3;

[0076] Vertical steel bars 3 are provided on both sides of the extension direction of the track 2;

[0077] One end of the vertical steel bar 3 passes through the bottom of the casting trough 11 and is preset in the foundation body 1 .

[0078] Furthermore, the above-mentioned loading device track capable of improving the tensile bearing capacity further includes transverse steel bars 4;

[0079] The extending direction of the transverse steel bars 4 is parallel to the extending direction of the casting groove 11;

[0080] The vertical steel bars 3 on the same side are connected by the transverse steel bars 4.

[0081] Specifically, there are at least two transverse steel bars 4 between the vertical steel bars 3 on the same side, and the transverse steel bars 4 can be connected to the corresponding vertical steel bars 3, or the transverse steel bars 4 can be placed on one side of the vertical steel bars 3 during the subsequent casting process.

[0082] As can be seen from the above description, by arranging the corresponding vertical steel bars 3 between the pile cap main body 1 and the casting groove 11 and connecting the corresponding vertical steel bars 3 by the transverse steel bars 4, the connection force between the casting structure and the pile cap main body 1 can be improved after the casting work is completed, so that when the track 2 is subjected to an upward vertical pull force, the tensile bearing capacity of the track 2 can be enhanced, thereby meeting the performance detection requirements of large-capacity fan blades.

[0083] Furthermore, the above-mentioned loading device track capable of improving the tensile bearing capacity further includes a casting layer 5;

[0084] When the track 2 is assembled with the pile cap main body 1, the casting layer 5 is filled between the track 2 and the pile cap main body 1.

[0085] Specifically, the casting layer 5 is made of any commercially available material that can improve the overall strength of the structure after solidification, such as a concrete layer, preferably ultra-high performance concrete.

[0086] As can be seen from the above description, the casting layer 5 is a medium connecting the track 2 and the pile cap main body 1. When the casting layer 5 solidifies, the overall strength can be effectively improved, that is, the connection strength between the casting layer 5 and the pile cap main body 1 can be effectively improved through the side wall structure of the casting groove 11, the vertical steel bars 3 and the transverse steel bars 4. Also, since the track 2 is connected to the pile cap main body 1 through the casting layer 5, when the track 2 is subjected to an upward vertical pull force, the pile cap main body 1, the vertical steel bars 3, the transverse steel bars 4, the concrete layer and the track 2 can be mutually pulled, so as to achieve the effect of improving the uplift bearing capacity of the track 2.

[0087] The present utility model also provides a fan blade test bench 6, including a fan blade positioning seat 61, a cable 62, a ground anchoring device 63, and the above-mentioned loading device track capable of improving the tensile bearing capacity;

[0088] The fan blade positioning seat 61 is arranged on the working surface of the pile cap main body 1;

[0089] The fan blade positioning seat 61 is arranged at one end in the length direction of the loading device track that can improve the tensile bearing capacity;

[0090] The ground anchoring device 63 is slidably connected to the loading device track that can improve the tensile bearing capacity;

[0091] When the fan blade to be tested is connected to the fan blade positioning seat 61, the loading device track that can improve the tensile bearing capacity and the fan blade to be tested are located in the same vertical plane, and the fan blade to be tested is connected to the ground anchoring device 63 through a cable 62.

[0092] Specifically, a corresponding motor is also arranged on the ground anchoring device 63 to release (reduce the tension on the fan blade) and wind up (increase the tension on the fan blade) the cable 62 by the rotation of the motor.

[0093] From the above description, it can be seen that this design has made specific improvements to the composition structure of the fan blade test bench 6, thus providing structural support for the fan blade test bench 6 to be able to simulate the actual loading conditions of the fan blade.

[0094] Furthermore, the number of loading device tracks that can improve the tensile bearing capacity is at least three;

[0095] In the width direction of the fan blade to be tested, the loading device tracks that can improve the tensile bearing capacity are arranged at intervals.

[0096] From the above description, it can be seen that this design has made further improvements to the composition structure of the fan blade test bench 6. By increasing the loading device tracks that can improve the tensile bearing capacity, it is convenient for the staff to set the ground anchoring device 63 on different loading device tracks that can improve the tensile bearing capacity according to actual needs, so that the fan blade test bench 6 of the present invention can simulate various different stress scenarios, enabling the finally obtained experimental data to truly reflect the performance of the fan blade, and further facilitating the staff to make timely adjustments to the process parameters during the production and manufacturing process to improve the quality of the fan blade.

[0097] The loading device track of the present invention that can improve the tensile bearing capacity can assist in the performance detection work of the fan blade.

[0098] Please refer to Figures 1 to 4 , the first embodiment of the present invention is:

[0099] A loading device track that can improve the tensile bearing capacity, comprising a bearing platform main body 1, stiffening ribs 24, vertical steel bars 3, horizontal steel bars 4 and a pouring layer 5; the bearing platform main body 1 is provided with a pouring groove 11; a track 2 is arranged in the pouring groove 11, and both side walls of the pouring groove 11 are recessed in a direction away from the inside of the pouring groove 11; both side walls of the pouring groove 11 are V-shaped; reinforcing ribs 12 are preset in the bearing platform main body 1 and close to the side walls of the pouring groove 11; the extending trajectory of the reinforcing ribs 12 is consistent with the shape of the side walls of the pouring groove 11.

[0100] The track 2 includes a first channel steel 21, a second channel steel 22 and a third channel steel 23 connected in sequence; the lower flanges of the first channel steel 21 and the third channel steel 23 are respectively arranged at the ends of the second channel steel 22 close to its notch; the notch direction of the second channel steel 22 is the same as the notch direction of the pouring groove 11; the notches of the first channel steel 21 and the third channel steel 23 are respectively arranged opposite to the corresponding side walls of the pouring groove 11; there is a spacing between the bottom of the first channel steel 21 and the bottom of the third channel steel 23; the spacing between the bottom of the first channel steel 21 and the bottom of the third channel steel 23 is less than the notch spacing of the second channel steel 22; the depth of the side wall of the first channel steel 21 close to the notch of the pouring groove 11 is less than the depth of the side wall of the first channel steel 21 away from the notch of the pouring groove 11; the depth of the side wall of the third channel steel 23 close to the notch of the pouring groove 11 is less than the depth of the side wall of the third channel steel 23 away from the notch of the pouring groove 11; the stiffening ribs 24 are arranged inside the first channel steel 21 or the third channel steel 23; the bottom of the first channel steel 21 and the side wall of the first channel steel 21 away from the notch of the pouring groove 11 are connected by the stiffening ribs 24; the bottom of the third channel steel 23 and the side wall of the third channel steel 23 away from the notch of the pouring groove 11 are connected by the stiffening ribs 24.

[0101] Vertical steel bars 3 are arranged on both sides in the extending direction of the track 2; one end of the vertical steel bar 3 penetrates the bottom of the pouring groove 11 and is preset in the bearing platform main body 1; the extending direction of the horizontal steel bar 4 is parallel to the extending direction of the pouring groove 11; the vertical steel bars 3 on the same side are connected by the horizontal steel bar 4.

[0102] When the track 2 is assembled with the bearing platform main body 1, the pouring layer 5 is filled between the track 2 and the bearing platform main body 1.

[0103] Please refer to Figure 5 , the second embodiment of the present utility model is:

[0104] The present utility model also provides a fan blade test bench 6, which includes a fan blade positioning seat 61, a cable 62, a ground anchoring device 63, and a loading device track capable of improving the tensile bearing capacity in the first embodiment; the fan blade positioning seat 61 is arranged on the working surface of the bearing platform main body 1; the fan blade positioning seat 61 is arranged at one end in the length direction of the loading device track capable of improving the tensile bearing capacity; the ground anchoring device 63 is slidably connected to the loading device track capable of improving the tensile bearing capacity; when the fan blade to be detected is connected to the fan blade positioning seat 61, the loading device track capable of improving the tensile bearing capacity and the fan blade to be detected are located in the same vertical plane, and the fan blade to be detected is connected to the ground anchoring device 63 through the cable 62; the number of the loading device tracks capable of improving the tensile bearing capacity is three; in the width direction of the fan blade to be detected, the loading device tracks capable of improving the tensile bearing capacity are arranged at intervals.

[0105] The working principle of the present utility model is as follows:

[0106] Installation and pouring stage of the loading device track:

[0107] First, corresponding reinforcing bars 12 are pre-embedded inside the bearing platform main body 1 according to the side wall shape of the pouring groove 11, and corresponding vertical steel bars 3 are preset at the bottom of the pouring groove 11; then, the vertical steel bars 3 on the same side are connected by two transverse steel bars 4; finally, the corresponding pouring material is filled between the pouring groove 11 and the track 2, and after solidification, a pouring layer 5 is formed, thereby completing the installation and pouring work of the loading device track.

[0108] Detection stage of the fan blade:

[0109] First, the fan blade to be detected is fixed on the fan blade positioning seat 61; then, according to the actual detection requirements, the staff slidably connects the corresponding number of ground anchoring devices 63 to the corresponding loading device tracks through corresponding T-shaped bolts and moves the ground anchoring devices 63 to the designated detection positions; then, both ends of the cable 62 are respectively fixed to the fan blade to be detected and the ground anchoring device 63; finally, the relevant tightening and loosening devices arranged on the ground anchoring device 63 are started to tighten and loosen the cable 62, so as to realize the pulling of the fan blade and achieve the effect of simulating the actual working conditions.

[0110] In summary, a loading device track capable of improving the tensile bearing capacity provided by the present utility model has a V-shaped concave structure on the side wall of the pouring groove. After the pouring work is completed, the post-poured pouring structure can be clamped with the pouring groove in the vertical direction. When the track in the pouring layer is subjected to an upward vertical tensile force, structural support is provided for the main body of the bearing platform to firmly limit the pouring layer in the pouring groove. Compared with the traditional loading device track, it can not only effectively improve the overall tensile bearing capacity, but also significantly improve the overall installation efficiency and save the corresponding labor costs because the steps for fastening the track to the main body of the bearing platform, such as connection methods like welding or binding, are omitted. At the same time, specific improvements are also made to the composition structure of the fan blade test bench to provide structural support for the fan blade test bench to simulate the actual load-bearing conditions of the fan blade.

[0111] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in the relevant technical fields, shall be equally included in the patent protection scope of the present utility model.

Claims

1. A loading device track capable of improving tensile bearing capacity, comprising a cap body; the cap body is provided with a casting trough; the casting trough is provided with a track, characterized in that: Both side walls of the casting trough are recessed in a direction away from the interior of the casting trough; Both side walls of the casting trough are V-shaped; A reinforcing rib is preset in the main body of the said foundation and close to the side wall of the casting trough; The extension track of the reinforcing rib is consistent with the shape of the side wall of the casting trough.

2. The loading device track capable of improving tensile bearing capacity according to claim 1, characterized in that: The track comprises a first channel steel, a second channel steel and a third channel steel which are connected in sequence; The lower flange of the first channel steel and the lower flange of the third channel steel are respectively arranged at the notch of the second channel steel; The notch direction of the second channel steel is consistent with the notch direction of the casting trough; The notches of the first channel steel and the third channel steel are respectively arranged opposite to the side walls of the corresponding casting troughs; A gap is left between the bottom of the first channel steel and the bottom of the third channel steel.

3. The loading device track capable of improving tensile bearing capacity according to claim 2, characterized in that: The spacing between the groove bottom of the first channel steel and the groove bottom of the third channel steel is smaller than the groove spacing of the second channel steel.

4. The loading device track capable of improving tensile bearing capacity according to claim 2, characterized in that: The side wall depth of the notch of the first channel steel close to the casting groove is less than the side wall depth of the notch of the first channel steel away from the casting groove; The side wall depth of the notch of the third channel steel close to the casting groove is less than the side wall depth of the notch of the third channel steel away from the casting groove.

5. The loading device track capable of improving tensile bearing capacity according to claim 4, characterized in that: It also includes stiffening ribs; The stiffening rib is arranged inside the first channel steel or inside the third channel steel; The bottom of the first channel steel and the side wall of the notch of the first channel steel away from the casting trough are connected by stiffening ribs; The groove bottom of the third channel steel and the side wall of the groove opening of the third channel steel away from the casting groove are connected by stiffening ribs.

6. The loading device track capable of improving tensile bearing capacity according to claim 1, characterized in that: It also includes vertical reinforcement; Vertical steel bars are provided on both sides of the extension direction of the track; One end of the vertical steel bar passes through the bottom of the casting trough and is preset in the foundation body.

7. The loading device track capable of improving tensile bearing capacity according to claim 6, characterized in that: It also includes transverse reinforcement; The extension direction of the transverse reinforcement is parallel to the extension direction of the casting trough; The vertical steel bars on the same side are connected by transverse steel bars.

8. The loading device track capable of improving tensile bearing capacity according to claim 7, characterized in that: It also includes the pouring layer; After the track is assembled with the platform body, the casting layer is filled between the track and the platform body.

9. A fan blade test bench, characterized in that: It comprises a fan blade positioning seat, a cable, a ground anchoring device, and a loading device track capable of improving the tensile bearing capacity as claimed in any one of claims 1 to 8; The fan blade positioning seat is arranged on the working surface of the support platform body; The fan blade positioning seat is arranged at one end of the length direction of the loading device track which can improve the tensile bearing capacity; The ground anchoring device is slidably connected to the track of the loading device which can improve the tensile bearing capacity; When the wind blade to be tested is connected to the wind blade positioning seat, the loading device track that can improve the tensile bearing capacity and the wind blade to be tested are located in the same vertical plane, and the wind blade to be tested is anchored to the ground through a cable.

10. The wind turbine blade test bench according to claim 9, characterized in that: The number of the loading device tracks capable of improving the tensile bearing capacity is at least three; In the width direction of the wind turbine blade to be inspected, the tracks of the loading device capable of improving the tensile bearing capacity are arranged at intervals.

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