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

Abstract

The utility model discloses a fan blade test bed and a loading device track capable of improving uplift bearing capacity, and belongs to the technical field of fan blade performance test equipment, the device comprises a pouring groove, a first connecting piece and a track arranged in the pouring groove, and a steel plate is preset at the bottom of the pouring groove; the two ends, in the width direction, of each steel plate are embedded into the side walls of the corresponding pouring grooves correspondingly. In the extending direction of the pouring groove, a second connecting piece is pre-arranged on the side wall of the pouring groove; the track is connected with the steel plate through a first connecting piece; the track is connected with the pouring groove through a second connecting piece; the rail is connected with the second connecting piece, so that the rail can be preliminarily mounted conveniently, and the connecting strength between the rail and the pouring groove can be improved; due to the fact that the bottom of the pouring groove is provided with the steel plate embedded with the pouring groove, after the rail is preliminarily installed, the rail and the steel plate are connected through the first connecting piece, and the pulling resistance of the rail in the vertical direction can be better enhanced.

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 the anti-pulling bearing capacity. Background Art

[0002] Wind energy is a clean, pollution-free and renewable energy source. Due to the environmental friendliness of wind power generation and the huge offshore wind energy reserves, the offshore wind power market is developing and growing rapidly. As the megawatt number of fans continues to increase, the single-unit capacity of fan units and the size of fan blades also increase.

[0003] Since the wind field conditions faced by fans are becoming more and more complex, before the new type of blades are officially put into production and use, a large number of static and dynamic load experiments of the blades need to be carried out on the blade loading test bench to simulate the actual loading conditions of the blades, so as to ensure the safety of the fans during use.

[0004] In the existing fan blade test bench, the ground anchoring device is used as the connection point for vertical tension loading. The ground anchoring device is anchored on the track of the blade loading device, and the loading cable is pulled by controlling the motor to achieve the purpose of adjusting the blade loading load. During the use process, 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.

[0005] However, the track adopted by the current fan blade test bench has a weak bearing capacity of the anti-pulling structure, so it cannot bear the vertical tension generated during the fan blade test well. Content of the Utility Model

[0006] The technical problem to be solved by the utility model is: how to provide a fan blade test bench and a loading device track to improve the anti-pulling bearing capacity of the track, so as to meet the performance detection requirements of large-capacity fan blades.

[0007] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0008] A loading device track capable of improving the anti-pulling bearing capacity, including a casting groove, a first connecting piece, and a track arranged in the casting groove. A steel plate is preset at the bottom of the casting groove;

[0009] Both ends of the steel plate in the width direction are respectively embedded in the side walls of the corresponding casting grooves;

[0010] In the extending direction of the casting groove, a second connecting piece is preset on the side wall of the casting groove;

[0011] The track is connected to the steel plate through the first connecting piece;

[0012] The track is connected to the casting groove through a second connecting member.

[0013] Furthermore, the track includes a first channel steel, a second channel steel, and a third channel steel that are connected in sequence;

[0014] 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;

[0015] 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;

[0016] A spacing is left between the bottom of the first channel steel and the bottom of the third channel steel.

[0017] Furthermore, the spacing between the bottom of the first channel steel and the bottom of the third channel steel is smaller than the notch spacing of the second channel steel.

[0018] Furthermore, it further includes stiffening ribs;

[0019] In the extending direction of the first channel steel or the third channel steel, stiffening ribs are arranged at intervals within the first channel steel or the third channel steel.

[0020] Furthermore, the number of the second connecting members is at least two;

[0021] The second connecting member is connected to the first channel steel or the third channel steel through the corresponding stiffening rib.

[0022] Furthermore, the first connecting member includes a first connecting portion and a second connecting portion that are connected;

[0023] The first connecting portion and the second connecting portion form an L shape;

[0024] The first connecting portion is welded to the stiffening rib;

[0025] The second connecting portion is welded to the steel plate.

[0026] Furthermore, it further includes reinforcing ribs;

[0027] The reinforcing ribs are preset in the bottom of the casting groove, and one end of the reinforcing rib is connected to the steel plate.

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

[0029] When the track is assembled with the casting groove, the casting layer is filled between the track and the casting groove.

[0030] Furthermore, a fan blade test bench is also provided, which includes a base body, a fan blade positioning seat, a cable, a ground anchoring device, and the loading device track described above that can improve the uplift bearing capacity;

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

[0032] The loading device track for improving the uplift bearing capacity is embedded in the main body of the bearing platform, and the opening of the loading device track for improving the uplift bearing capacity faces the working surface of the main body of the bearing platform;

[0033] The wind turbine blade positioning seat is arranged at one end in the length direction of the loading device track for improving the uplift bearing capacity;

[0034] The ground anchoring device is slidably connected with the loading device track for improving the uplift bearing capacity;

[0035] When the wind turbine blade to be detected is connected with the wind turbine blade positioning seat, the loading device track for improving the uplift bearing capacity and the wind turbine blade to be detected are located in the same vertical plane, and the wind turbine blade to be detected is connected with the ground anchoring device through a cable.

[0036] Furthermore, the number of the loading device tracks for improving the uplift bearing capacity is at least three;

[0037] In the width direction of the wind turbine blade to be detected, the loading device tracks for improving the uplift bearing capacity are arranged at intervals.

[0038] The beneficial effect of the present utility model lies in that: for the loading device track for improving the uplift bearing capacity provided by the present utility model, by connecting the track with the second connecting piece preset on the side wall of the casting groove, it is not only convenient for the preliminary installation of the track, but also can improve the connection strength between the track and the casting groove; and because a steel plate is embedded in the bottom of the casting groove, after the preliminary installation of the track is completed, by connecting the track and the steel plate through the first connecting piece, the uplift resistance of the track in the vertical direction can be better enhanced. Description of the Drawings

[0039] Figure 1 Shown is a schematic structural diagram of the first connecting piece, the second connecting piece and the track in the specific embodiment of the present utility model;

[0040] Figure 2 Shown is a schematic structural diagram of the loading device track for improving the uplift bearing capacity in the specific embodiment of the present utility model;

[0041] Figure 3 Shown is a schematic structural diagram of the loading device track for improving the uplift bearing capacity (when filled with a casting layer) in the specific embodiment of the present utility model;

[0042] Figure 4 Shown is a schematic structural diagram of the wind turbine blade test bench in the specific embodiment of the present utility model;

[0043] Label Description:

[0044] 1. Pouring trough; 11. Steel plate;

[0045] 2. First connecting piece; 21. First connecting part; 22. Second connecting part;

[0046] 3. Track; 31. First channel steel; 32. Second channel steel; 33. Third channel steel; 34. Stiffening rib;

[0047] 4. Second connecting piece;

[0048] 5. Reinforcing rib;

[0049] 6. Pouring layer;

[0050] 7. Fan blade test bench; 71. Main body of the bearing platform; 72. Fan blade positioning seat; 73. Cable; 74. Ground anchoring device;

[0051] 8. Fan blade body. Specific implementation mode

[0052] To describe in detail the technical content, achieved purpose and effects of the present utility model, the following is described in conjunction with the implementation mode and with reference to the drawings.

[0053] The most crucial concept of the present utility model lies in: by connecting the track with the second connecting piece, it is not only convenient to complete the preliminary installation of the track, but also can improve the connection strength between the track and the pouring trough; and because the bottom of the pouring trough is provided with a steel plate embedded therein, after the preliminary installation of the track, by connecting the track and the steel plate through the first connecting piece, the anti-pulling ability of the track in the vertical direction can be better enhanced.

[0054] Please refer to Figures 1 to 4 , the track of the loading device capable of improving the anti-pulling bearing capacity provided by the present utility model includes a pouring trough 1, a first connecting piece 2, and a track 3 arranged in the pouring trough 1. A steel plate 11 is preset at the bottom of the pouring trough 1;

[0055] Both ends in the width direction of the steel plate 11 are respectively embedded in the side walls of the corresponding pouring trough 1;

[0056] In the extending direction of the pouring trough 1, a second connecting piece 4 is preset on the side wall of the pouring trough 1;

[0057] The track 3 is connected to the steel plate 11 through the first connecting piece 2;

[0058] The track 3 is connected to the pouring trough 1 through the second connecting piece 4.

[0059] 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 uplift bearing capacity is provided. By connecting the track 3 to the second connecting member 4 preset on the side wall of the casting groove 1, it is not only convenient for the preliminary installation of the track 3, but also can improve the connection strength between the track 3 and the casting groove 1. Compared with the traditional installation method of the track 3, since a steel plate 11 is embedded in the bottom of the casting groove 1, after the preliminary installation of the track 3 is completed, the track 3 and the steel plate 11 are connected by the first connecting member 2. When the track 3 is subjected to an upward vertical pulling force, the pulling force can be transmitted to the steel plate 11 through the first connecting member 2. At the same time, since the steel plate 11 is embedded in the casting groove 1, the vertical uplift force can be further transmitted to the casting groove 1, thereby better enhancing the uplift bearing capacity of the track 3 in the vertical direction.

[0060] Further, the track 3 includes a first channel steel 31, a second channel steel 32, and a third channel steel 33 that are connected in sequence;

[0061] The lower flanges of the first channel steel 31 and the third channel steel 33 are respectively arranged at the ends of the second channel steel 32 close to its own groove opening;

[0062] The groove openings of the first channel steel 31 and the third channel steel 33 are respectively arranged opposite to the side walls of the corresponding casting grooves 1;

[0063] There is a spacing between the bottom of the first channel steel 31 and the bottom of the third channel steel 33.

[0064] Further, the spacing between the bottom of the first channel steel 31 and the bottom of the third channel steel 33 is less than the groove spacing of the second channel steel 32.

[0065] Specifically, the groove opening direction of the second channel steel 32 is the same as the groove opening direction of the casting groove 1; the distance between the bottom of the first channel steel 31 and the bottom of the third channel steel 33 is Figure 1 α in; the groove spacing of the second channel steel 32 is Figure 1 β in; the lower flanges of the first channel steel 31 and the third channel steel 33 are both one side wall of the first channel steel 31 or the third channel steel 33; and the lower flanges of the first channel steel 31 and the third channel steel 33 are both connected to the ends of the second channel steel 32 close to its own groove opening by bolts.

[0066] As can be seen from the above description, this design makes specific modifications to the composition structure of the track 3 to ensure that the track 3 structure composed of the first channel steel 31, the second channel steel 32, and the third channel steel 33 can meet the requirements of subsequent pull-out tests and avoid affecting normal detection work due to structural problems.

[0067] Further, the above-mentioned loading device track capable of improving the uplift bearing capacity further includes a stiffening rib 34;

[0068] In the extending direction of the first channel steel 31 or the third channel steel 33, stiffening ribs 34 are arranged at intervals within the first channel steel 31 or the third channel steel 33.

[0069] Furthermore, the number of the second connectors 4 is at least two;

[0070] The second connectors 4 are connected to the first channel steel 31 or the third channel steel 33 through corresponding stiffening ribs 34.

[0071] As can be seen from the above description, by arranging the corresponding stiffening ribs 34 in the corresponding first channel steel 31 and third channel steel 33 and further determining the number of the second connectors 4, not only can the overall strength of the first channel steel 31 and the third channel steel 33 be effectively improved, but also the connection force between the first channel steel 31 and the third channel steel 33 and the casting groove 1 can be enhanced, thereby avoiding the deformation of the track 3 easily caused by tensile force and further affecting the subsequent normal detection work.

[0072] Furthermore, the first connector 2 includes a connected first connecting portion 21 and a second connecting portion 22;

[0073] The first connecting portion 21 and the second connecting portion 22 form an L shape;

[0074] The first connecting portion 21 is welded to the stiffening rib 34;

[0075] The second connecting portion 22 is welded to the steel plate 11.

[0076] As can be seen from the above description, this design makes a specific improvement to the structure of the first connector 2. The first connector 2 is set as an L-shaped structure composed of the first connecting portion 21 and the second connecting portion 22, which can not only ensure that the first connector 2 can be normally connected to the stiffening rib 34, but also increase the effective contact surface between the first connector 2 and the steel plate 11, thereby enhancing the connection force between the first connector 2 and the steel plate 11. Furthermore, after the pouring work of the track 3 is completed, the purpose of improving the uplift bearing capacity between the track 3 and the casting groove 1 can be achieved.

[0077] Furthermore, the above loading device track capable of improving the uplift bearing capacity further includes a reinforcing rib 5;

[0078] The reinforcing rib 5 is preset in the bottom of the casting groove 1, and one end of the reinforcing rib 5 is connected to the steel plate 11.

[0079] As can be seen from the above description, this design can further improve the connection performance between the steel plate 11 and the casting groove 1, so that the pulling force borne by the steel plate 11 can be significantly improved, thereby effectively enhancing the uplift effect of the track 3 and ensuring that the cast track 3 can meet the performance detection requirements of large-capacity fan blades.

[0080] Furthermore, the above loading device track capable of improving the uplift bearing capacity further includes a casting layer 6;

[0081] After the track 3 and the casting groove 1 are assembled, the casting layer 6 is filled between the track 3 and the casting groove 1.

[0082] Specifically, the casting layer 6 is made of any commercially available material that can improve the overall strength of the structure after solidification, such as a concrete layer.

[0083] As can be seen from the above description, the casting layer 6 is a medium connecting the track 3 and the casting groove 1. After the casting layer 6 solidifies, it can effectively improve the overall strength. That is, through the first connecting member 2, the second connecting member 4 and the steel plate 11, the connection strength between the casting layer 6 and the casting groove 1 can be effectively improved. Also, since the track 3 and the casting groove 1 are also connected by the first connecting member 2, the second connecting member 4 and the steel plate 11, therefore, when the track 3 is subjected to an upward vertical pull, it can make the casting groove 1, the steel plate 11, the first connecting member 2, the second connecting member 4, the concrete layer and the track 3 pull on each other, so as to achieve the effect of improving the uplift bearing capacity of the track 3.

[0084] The present utility model further provides a fan blade test bench 7, including a bearing platform main body 71, a fan blade positioning seat 72, a cable 73, a ground anchoring device 74, and the loading device track capable of improving the uplift bearing capacity according to any one of the above;

[0085] The fan blade positioning seat 72 is arranged on the working surface of the bearing platform main body 71;

[0086] The loading device track capable of improving the uplift bearing capacity is embedded in the bearing platform main body 71, and the opening of the loading device track capable of improving the uplift bearing capacity is arranged facing the working surface of the bearing platform main body 71;

[0087] The fan blade positioning seat 72 is arranged at one end in the length direction of the loading device track capable of improving the uplift bearing capacity;

[0088] The ground anchoring device 74 is slidably connected to the loading device track capable of improving the uplift bearing capacity;

[0089] When the fan blade to be detected is connected to the fan blade positioning seat 72, the loading device track capable of improving the uplift 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 74 through the cable 73.

[0090] Specifically, a corresponding motor is further arranged on the ground anchoring device 74 to release (reduce the pull on the fan blade) and wind up (increase the pull on the fan blade) the cable 73 by the rotation of the motor.

[0091] As described above, the design has made specific improvements to the composition structure of the fan blade test bench 7, thereby providing structural support for the fan blade test bench 7 to simulate the actual load-bearing conditions of the fan blade.

[0092] Furthermore, the number of loading device tracks that can improve the uplift bearing capacity is at least three;

[0093] In the width direction of the fan blade to be detected, the loading device tracks that can improve the uplift bearing capacity are arranged at intervals.

[0094] As described above, the design has further improved the composition structure of the fan blade test bench 7. By adding loading device tracks that can improve the uplift bearing capacity, it is convenient for the staff to set the ground anchoring device 74 on different loading device tracks that can improve the uplift bearing capacity according to actual needs, so that the fan blade test bench 7 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.

[0095] The loading device track of the present invention that can improve the uplift bearing capacity can assist in the performance detection work of the fan blade.

[0096] Please refer to Figures 1 to 3 , the first embodiment of the present invention is:

[0097] A loading device track that can improve the uplift bearing capacity, including a casting groove 1, a first connecting piece 2, a stiffening rib 34, a reinforcing rib 5, a casting layer 6, and a track 3 arranged in the casting groove 1. A steel plate 11 is preset at the bottom of the casting groove 1; both ends in the width direction of the steel plate 11 are respectively embedded in the side walls of the corresponding casting groove 1; in the extending direction of the casting groove 1, a second connecting piece 4 is preset on the side wall of the casting groove 1; the track 3 is connected to the steel plate 11 through the first connecting piece 2; the track 3 is connected to the casting groove 1 through the second connecting piece 4; the reinforcing rib 5 is preset in the bottom of the casting groove 1, and one end of the reinforcing rib 5 is connected to the steel plate 11.

[0098] The track 3 includes a first channel steel 31, a second channel steel 32, and a third channel steel 33 that are connected in sequence; the lower flanges of the first channel steel 31 and the third channel steel 33 are respectively arranged at the ends of the second channel steel 32 close to its notch; the notches of the first channel steel 31 and the third channel steel 33 are respectively arranged opposite to the side walls of the corresponding casting grooves 1; there is a spacing between the bottom of the first channel steel 31 and the bottom of the third channel steel 33; the spacing between the bottom of the first channel steel 31 and the bottom of the third channel steel 33 is less than the groove spacing of the second channel steel 32; in the extending direction of the first channel steel 31 or the third channel steel 33, stiffening ribs 34 are arranged at intervals in the first channel steel 31 or the third channel steel 33; the number of the second connectors 4 is two; the second connectors 4 are connected to the first channel steel 31 or the third channel steel 33 through the corresponding stiffening ribs 34; the first connector 2 includes a connected first connecting portion 21 and a second connecting portion 22; the first connecting portion 21 and the second connecting portion 22 form an L shape; the first connecting portion 21 is welded to the stiffening rib 34; the second connecting portion 22 is welded to the steel plate 11.

[0099] When the track 3 is assembled with the casting groove 1, the casting layer 6 is filled between the track 3 and the casting groove 1.

[0100] Please refer to Figure 4 , the second embodiment of the present utility model is as follows:

[0101] A fan blade test bench 7 includes a base main body 71, a fan blade positioning seat 72, a cable 73, a ground anchoring device 74, and a loading device track that can improve the uplift bearing capacity in the first embodiment; the fan blade positioning seat 72 is arranged on the working surface of the base main body 71; the loading device track that can improve the uplift bearing capacity is embedded in the base main body 71, and the opening of the loading device track that can improve the uplift bearing capacity faces the working surface of the base main body 71; the fan blade positioning seat 72 is arranged at one end in the length direction of the loading device track that can improve the uplift bearing capacity; the ground anchoring device 74 is slidably connected to the loading device track that can improve the uplift bearing capacity; when the fan blade to be detected is connected to the fan blade positioning seat 72, the loading device track that can improve the uplift 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 74 through the cable 73; the number of the loading device tracks that can improve the uplift bearing capacity is three; in the width direction of the fan blade to be detected, the loading device tracks that can improve the uplift bearing capacity are arranged at intervals.

[0102] The working principle of the present utility model is as follows:

[0103] Installation and casting stage of the loading device track:

[0104] First, preset the second connecting member 4 on the side wall of the casting groove 1, embed the reinforcing rib 5 in the bottom of the casting groove 1, and at the same time embed both ends in the width direction of the steel plate 11 into the side wall of the casting groove 1, and connect one end of the reinforcing rib 5 to the steel plate 11; then, preliminarily place the track 3 in the casting groove 1 by means of hoisting, and connect the track 3 to the second connecting member 4 through the stiffening rib 34; then, connect the stiffening rib 34 on the preliminarily installed track 3 to the steel plate 11 through the first connecting member 2; finally, fill the corresponding casting material between the casting groove 1 and the track 3, and wait for it to solidify to form the casting layer 6, thereby completing the installation and casting work of the loading device track.

[0105] Inspection stage of the fan blade:

[0106] First, fix the fan blade to be inspected on the fan blade positioning seat 72; then, according to the actual inspection requirements, the staff slide a corresponding number of ground anchoring devices 74 into the corresponding loading device tracks through corresponding T-bolts, and move the ground anchoring devices 74 to the designated inspection positions; then, fix both ends of the cable 73 to the fan blade to be inspected and the ground anchoring device 74 respectively; finally, start the relevant tensioning device provided on the ground anchoring device 74 to tension or loosen the cable 73, so as to realize the pulling of the fan blade and achieve the effect of simulating the actual working conditions.

[0107] In summary, a loading device track provided by the present utility model can improve the uplift bearing capacity. By connecting the track to the second connecting member preset on the side wall of the casting groove, it is not only convenient for the preliminary installation of the track, but also can improve the connection strength between the track and the casting groove; compared with the traditional track installation method, since the bottom of the casting groove is provided with a steel plate embedded therein, after the track is preliminarily installed, the track and the steel plate are connected through the first connecting member, so that when the track is subjected to an upward vertical pull force, the pull force can be transmitted to the steel plate through the first connecting member, and at the same time, since the steel plate is embedded in the casting groove, the vertical uplift force can be further transmitted to the casting groove, thereby better enhancing the uplift bearing capacity of the track in the vertical direction; at the same time, specific improvements have also been 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.

[0108] 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 included in the patent protection scope of the present utility model by the same token.

Claims

1. A loading device track capable of improving pull-out bearing capacity, comprising a casting trough, a first connecting member, and a track arranged in the casting trough, characterized in that: The bottom of the casting trough is preset with a steel plate; Both ends of the steel plate in the width direction are respectively embedded in the side walls of the corresponding casting trough; In the extension direction of the casting trough, a second connecting piece is preset on the side wall of the casting trough; The track is connected to the steel plate via a first connecting piece; The track is connected to the casting trough through a second connecting member.

2. The loading device track capable of improving pull-out 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 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 pull-out 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 pull-out bearing capacity according to claim 2, characterized in that: It also includes stiffening ribs; In the extending direction of the first channel steel or the extending direction of the third channel steel, stiffening ribs are arranged at intervals inside the first channel steel or the third channel steel.

5. The loading device track capable of improving pull-out bearing capacity according to claim 4, characterized in that: The number of the second connecting members is at least two; The second connecting member is connected to the first channel steel or the third channel steel through corresponding stiffening ribs.

6. The loading device track capable of improving pull-out bearing capacity according to claim 4, characterized in that: The first connecting member includes a first connecting portion and a second connecting portion connected to each other; The first connecting portion and the second connecting portion form an L shape; The first connection portion is welded to the stiffening rib; The second connection portion is welded to the steel plate.

7. The loading device track capable of improving pull-out bearing capacity according to claim 1, characterized in that: It also includes reinforcement ribs; The reinforcing rib is preset in the bottom of the casting trough, and one end of the reinforcing rib is connected to the steel plate.

8. The loading device track capable of improving pull-out bearing capacity according to claim 1, characterized in that: It also includes the pouring layer; When the track is assembled with the casting trough, the casting layer is filled between the track and the casting trough.

9. A fan blade test bench, characterized in that: It comprises a bearing platform body, a fan blade positioning seat, a cable, a ground anchoring device, and a loading device track capable of improving the pull-out 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 loading device track capable of improving the pull-out bearing capacity is embedded in the platform body, and the opening of the loading device track capable of improving the pull-out bearing capacity is arranged toward the working surface of the 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 pull-out bearing capacity; The ground anchoring device is slidably connected to the track of the loading device which can improve the pull-out 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 pull-out bearing capacity and the wind blade to be tested are located in the same vertical plane, and the wind blade to be tested is connected to the ground anchor device 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 pull-out 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 pull-out bearing capacity are arranged at intervals.

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