An impact test frame resistant to secondary impacts

Abstract

This utility model relates to an impact test frame for preventing secondary impacts, comprising a stand, a crossbar, and an anti-secondary impact component. A fixed frame is mounted on the stand, and a photovoltaic module is placed on the fixed frame. A test component and an adjustment component are located at the lower end of the crossbar. The test component includes a test line and a pendulum ball connected to the bottom end of the test line. The adjustment component is connected to the pendulum ball via a locking component to adjust the release height of the pendulum ball. The anti-secondary impact component includes an anti-collision cylinder and an anti-collision line located at the upper end of the crossbar. One end of the anti-collision line is connected to the piston rod end of the anti-collision cylinder, and the other end is connected to the pendulum ball. When the pendulum ball completes its first impact and begins to swing back, the anti-collision cylinder immediately contracts, actively pulling and braking the pendulum ball through the anti-collision line, preventing the possibility of secondary impacts on the photovoltaic module. This eliminates interference with the test results caused by multiple inertial impacts, improves the accuracy and reliability of the impact resistance test, and ensures that the test data truly reflects the performance of the photovoltaic module under a single impact.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic module testing, and in particular to an impact test frame that is resistant to secondary impacts. Background Technology

[0002] Existing impact testing frames for photovoltaic modules include a stand and a crossbar. A fixed frame is mounted on the stand, and the photovoltaic module is placed on the fixed frame. A testing component and an adjustment component are located at the lower end of the crossbar. The testing component includes a test line and a pendulum ball connected to the bottom of the test line. The adjustment component is connected to the pendulum ball through a locking component to adjust the release height of the pendulum ball. Driving the locking component releases the test line, and the pendulum ball swings to impact the photovoltaic module on the fixed frame. After impacting the photovoltaic module, the pendulum ball has inertia and will impact the photovoltaic module a second time, resulting in deviations in the impact resistance of the photovoltaic module and low accuracy of the test results.

[0003] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model discloses an impact testing framework to prevent secondary impacts. This framework addresses the problem that after a pendulum impacts a photovoltaic module, the pendulum will have inertia and cause a secondary impact on the photovoltaic module, resulting in deviations in the impact resistance of the photovoltaic module and low accuracy of the test results.

[0005] The technical solution adopted in this utility model is as follows:

[0006] An impact testing frame resistant to secondary impacts, characterized in that it comprises:

[0007] A support frame is provided on the support frame, and the photovoltaic modules are placed on the support frame;

[0008] A crossbar is fixedly connected to the upright frame. The lower end of the crossbar is provided with a test component and an adjustment component. The test component includes a test line and a pendulum ball connected to the bottom end of the test line. The adjustment component is connected to the pendulum ball through a locking component to adjust the release height of the pendulum ball.

[0009] A secondary impact prevention component includes an anti-collision cylinder and an anti-collision line disposed at the upper end of the crossbar. One end of the anti-collision line is connected to the piston rod end of the anti-collision cylinder, and the other end is connected to the pendulum ball. The anti-collision cylinder is configured to retract to pull the anti-collision line when the pendulum ball swings back after impacting the photovoltaic module, thereby preventing the pendulum ball from impacting the photovoltaic module a second time.

[0010] A further technical solution is that a first pulley is provided at the upper end of the side of the crossbar away from the fixed block, and the other end of the anti-collision line passes around the first pulley and through the crossbar to connect to the pendulum ball.

[0011] A further technical solution is that the adjustment assembly includes an electric hoist, a second pulley, a swing arm, a third pulley, and an adjustment line. The electric hoist is mounted on the crossbeam of the upright frame. A groove is formed along the length of the lower end of the crossbeam. The second pulley is located in the groove and is situated on the side closest to the electric hoist. One end of the swing arm is hinged to the lower end of the crossbeam, and the swing arm rotates towards or away from the fixed frame. The third pulley is located in the groove and is situated on the side away from the electric hoist. One end of the adjustment line is fixedly connected to the electric hoist, and the other end of the adjustment line passes sequentially around the second pulley and the third pulley. The adjustment line passing around the third pulley is fixedly connected to the swing arm. The locking assembly is located at the end of the swing arm away from the crossbeam.

[0012] A further technical solution is that the locking assembly includes a locking cylinder, a guide block, and a fixing block disposed on the swing arm. The fixing block is disposed on the lower end of the swing arm away from the fixing frame. The guide block is disposed on the side of the fixing block close to the fixing frame. The locking cylinder is disposed on the side of the guide block close to the fixing frame. A gap is left between the guide block and the fixing block. The guide block and the fixing block are coaxially provided with a guide hole. The piston rod of the locking cylinder extends or retracts in the guide hole. The piston rod of the locking cylinder abuts against the fixing block. A locking line is provided on the swing ball. The locking line is located in the gap. The piston rod of the locking cylinder passes through the locking line.

[0013] A further technical solution is that two side plates are vertically provided at the bottom of the crossbar, and the two side plates are respectively located on both sides of the swing rod. The swing rod is hinged to the side plates. Both side plates are provided with horizontal waist-shaped holes, and adjusting bolts are inserted into the waist-shaped holes. Adjusting nuts are provided on the adjusting bolts.

[0014] A further technical solution is that a support rod is provided on one side of the upright frame. The support rod is located on the side of the fixed frame away from the swing rod. One end of the support rod is fixedly connected to the bottom end of the upright frame, and the other end of the support rod is fixedly connected to the upper side of the upright frame. The support rod and the upright frame form a triangle.

[0015] A further technical solution is that the pendulum ball is a shotgun ball.

[0016] A further technical solution is that a reinforcing rod is provided on the crossbar, one end of the reinforcing rod is fixedly connected to the crossbar, and the other end of the reinforcing rod is fixedly connected to the crossbeam. The crossbar, the reinforcing rod and the upright form a triangle.

[0017] The beneficial effects of this utility model embodiment are as follows:

[0018] (i) An impact test frame for preventing secondary impact includes a stand, a crossbar, and a secondary impact prevention component. A fixed frame is provided on the stand, and the photovoltaic module is placed on the fixed frame. A test component and an adjustment component are provided at the lower end of the crossbar. The test component includes a test line and a pendulum ball connected to the bottom end of the test line. The adjustment component is connected to the pendulum ball through a locking component to adjust the release height of the pendulum ball. The secondary impact prevention component includes an anti-collision cylinder and an anti-collision line set at the upper end of the crossbar. One end of the anti-collision line is connected to the piston rod end of the anti-collision cylinder, and the other end is connected to the pendulum ball. When the pendulum ball completes the first impact and begins to swing back, the anti-collision cylinder immediately contracts. The anti-collision line actively pulls and brakes the pendulum ball, preventing the possibility of secondary impact on the photovoltaic module. This eliminates the interference caused by multiple inertial impacts on the test results, improves the accuracy and reliability of the impact resistance test, and ensures that the test data truly reflects the performance of the photovoltaic module under a single impact.

[0019] (ii) Furthermore, a first pulley is provided at the upper end of the side of the crossbar away from the fixed frame, and the other end of the anti-collision line passes around the first pulley and through the crossbar to connect to the pendulum ball. By having the anti-collision line pass around the first pulley at the end of the crossbar, the horizontal contraction force generated by the anti-collision cylinder is converted into a vertical upward traction force, which directly acts on the direction of the pendulum ball's motion during the return swing. At the same time, the first pulley significantly reduces the frictional loss between the anti-collision line and the crossbar, ensuring efficient power transmission of the anti-collision cylinder and avoiding braking delay caused by friction. Attached Figure Description

[0020] Figure 1 This is an isometric view of an impact test frame for preventing secondary impacts according to this utility model.

[0021] Figure 2 This is a front view structural diagram of an impact test frame for preventing secondary impact according to this utility model.

[0022] Figure 3 This is a bottom view of the impact test frame for preventing secondary impacts according to this utility model.

[0023] In the picture:

[0024] 100. Upright frame; 110. Fixed frame; 120. Crossbeam; 130. Support rod; 200. Horizontal bar; 210. Trench; 220. Side plate; 221. Waist-shaped hole; 222. Adjusting bolt; 223. Adjusting nut; 230. Reinforcing rod; 300. Anti-secondary impact assembly; 310. Anti-collision cylinder; 320. First pulley; 400. Test assembly; 410. Test line; 420. Pendulum ball; 500. Adjustment assembly; 510. Electric hoist; 520. Second pulley; 530. Swing rod; 540. Third pulley; 600. Locking assembly; 610. Locking cylinder; 620. Guide block; 630. Fixed block; 640. Gap. Detailed Implementation

[0025] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0026] Example:

[0027] Figure 1 This is an isometric view of an impact testing frame for preventing secondary impacts according to this utility model. Figure 1 As shown, an impact test frame for preventing secondary impacts includes a stand 100, a crossbar 200, and a secondary impact protection component 300. A fixing frame 110 is provided on the stand 100, and the photovoltaic module is placed on the fixing frame 110.

[0028] Figure 2 This is a front view structural diagram of an impact test frame for preventing secondary impact according to this utility model. Figure 3 This is a bottom view of the impact testing frame for preventing secondary impacts according to this utility model. Figures 1-3As shown, a crossbar 200 is fixedly connected to the upright frame 100. A test assembly 400 and an adjustment assembly 500 are provided at the lower end of the crossbar 200. The test assembly 400 includes a test line 410 and a pendulum ball 420 connected to the bottom end of the test line 410. For example, the pendulum ball 420 is a shotgun ball. The adjustment assembly 500 is connected to the pendulum ball 420 via a locking assembly 600 to adjust the release height of the pendulum ball 420. For example, the adjustment assembly 500 includes an electric hoist 510, a second pulley 520, a swing rod 530, a third pulley 540, and an adjustment line. The electric hoist 510 is mounted on the crossbeam 120 of the upright frame 100. A groove 210 is formed at the lower end of the crossbeam 200 along its length. The second pulley 520 is disposed within the groove 210 and located on the side close to the electric hoist 510. One end of the swing rod 530 is hinged to the lower end of the crossbeam 200, and the rotation direction of the swing rod 530 is towards or away from the fixed frame 110. For example, two side plates 220 are vertically provided at the bottom of the crossbeam 200. The two side plates 220 are located on both sides of the swing rod 530, and the swing rod 530 is hinged to the side plates 220. Both side plates 220 are horizontally provided with oblong holes 221, and adjusting bolts 222 are inserted into the oblong holes 221. Adjusting nuts 223 are provided on the adjusting bolts 222. The third pulley 540 is located inside the trough 210 and on the side away from the electric hoist 510. One end of the adjustment line is fixedly connected to the electric hoist 510, and the other end of the adjustment line passes through the second pulley 520 and the third pulley 540 in sequence. The adjustment line passing through the third pulley 540 is fixedly connected to the swing arm 530. The locking component 600 is located at the end of the swing arm 530 away from the crossbar 200. The locking assembly 600 includes a locking cylinder 610, a guide block 620, and a fixing block 630 disposed on the rocker arm 530. The fixing block 630 is disposed on the lower end of the rocker arm 530 away from the fixing frame 110. The guide block 620 is disposed on the side of the fixing block 630 close to the fixing frame 110. The locking cylinder 610 is disposed on the side of the guide block 620 close to the fixing frame 110. A gap 640 is left between the guide block 620 and the fixing block 630. The guide block 620 and the fixing block 630 are coaxially provided with a guide hole. The piston rod of the locking cylinder 610 extends or retracts in the guide hole. The piston rod of the locking cylinder 610 abuts against the fixing block 630. A locking line is provided on the rocker ball 420. The locking line is located in the gap 640. The piston rod of the locking cylinder 610 passes through the locking line.

[0029] like Figure 1 As shown, the anti-secondary impact component 300 includes an anti-collision cylinder 310 and an anti-collision line disposed at the upper end of the crossbar 200. One end of the anti-collision line is connected to the end of the piston rod of the anti-collision cylinder 310, and the other end is connected to the pendulum ball 420. The anti-collision cylinder 310 is configured to retract to pull the anti-collision line when the pendulum ball 420 swings back after hitting the photovoltaic module, thereby preventing the pendulum ball 420 from hitting the photovoltaic module a second time.

[0030] like Figure 1As shown, furthermore, a first pulley 320 is provided at the upper end of the side of the crossbar 200 away from the fixed frame 110. The other end of the anti-collision line passes around the first pulley 320 and through the crossbar 200 to connect to the pendulum ball 420. By passing the anti-collision line around the first pulley 320 at the end of the crossbar 200, the horizontal contraction force generated by the anti-collision cylinder 310 is converted into a vertical upward traction force, which directly acts on the direction of motion of the pendulum ball 420 in the return swing. At the same time, the first pulley 320 greatly reduces the friction loss between the anti-collision line and the crossbar 200, ensuring the efficient transmission of power of the anti-collision cylinder 310 and avoiding braking delay caused by friction.

[0031] like Figure 2 As shown, further, a support rod 130 is provided on one side of the support frame 100. The support rod 130 is located on the side of the fixed frame 110 away from the pendulum rod 530. One end of the support rod 130 is fixedly connected to the bottom end of the support frame 100, and the other end of the support rod 130 is fixedly connected to the upper side of the support frame 100. The support rod 130 and the support frame 100 form a triangle. The two ends of the support rod 130 are respectively anchored to the bottom end of the support frame 100 and the side of the fixed frame 110, forming a stable triangular structure with the support frame 100 and the fixed frame 110. When the pendulum ball 420 impacts the photovoltaic module, the impact force is transmitted through the fixed frame 110 to the support rod 130, and converted into axial tensile and compressive forces along the rod body, effectively suppressing the lateral displacement and vibration of the fixed frame 110, and ensuring the reliability of the test data.

[0032] like Figure 2 As shown, furthermore, a reinforcing rod 230 is provided on the crossbar 200. One end of the reinforcing rod 230 is fixedly connected to the crossbar 200, and the other end of the reinforcing rod 230 is fixedly connected to the crossbeam 120. The crossbar 200, the reinforcing rod 230, and the upright frame 100 form a triangle. When the pendulum ball 420 impacts the photovoltaic module, the impact reaction force is transmitted to the reinforcing rod 230 through the fixed frame 110, converting the bending moment borne by the crossbar 200 into the axial pressure of the reinforcing rod 230, ensuring that the test module 400 maintains spatial stability at the moment of impact.

[0033] In operation, this embodiment is as follows:

[0034] First, the electric hoist 510 winds up and unwinds the adjustment line, driving it to pass sequentially around the second pulley 520 and the third pulley 540, causing the swing arm 530 to rotate around the hinge point to a predetermined angle. Simultaneously, the adjusting bolt 222 within the oblong hole 221 is used to finely adjust the angle of the swing arm 530 to precisely locate the impact point. The piston rod of the locking cylinder 610 extends through the locking line on the pendulum ball 420 and presses against the fixing block 630, pressing the locking line into the gap 640 between the guide block 620 and the fixing block 630, thus stably suspending the pendulum ball 420 at the set height. Testing... When the piston rod of the locking cylinder 610 retracts instantaneously to release the locking line, the pendulum ball 420 swings down along the arc to impact the photovoltaic module on the fixed frame 110. At the moment the impact is completed, the anti-collision cylinder 310 immediately retracts the piston rod, pulling the anti-collision line around the first pulley 320 to precisely restrain the swinging pendulum ball 420, eliminating its inertia from the secondary impact on the photovoltaic module. Finally, the electric hoist 510 retracts the adjustment line to reset the pendulum rod 530, the locking cylinder 610 re-fixes the pendulum ball 420, and the anti-collision cylinder 310 resets and releases the anti-collision line, completing a single impact resistance test cycle.

[0035] In this embodiment, when the pendulum ball 420 completes its first impact and begins to swing back, the anti-collision cylinder 310 immediately retracts, actively pulling and braking the pendulum ball 420 through the anti-collision line, preventing the possibility of it impacting the photovoltaic module a second time, eliminating the interference caused by multiple impacts due to inertia on the test results, improving the accuracy and reliability of the impact resistance test, and ensuring that the test data truly reflects the performance of the photovoltaic module under a single impact.

[0036] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A secondary impact protection impact test frame, characterized in that, include: A support frame (100) is provided on the support frame (100), and a fixing frame (110) is provided on the fixing frame (110). The photovoltaic module is placed on the fixing frame (110). A crossbar (200) is fixedly connected to the upright (100). The lower end of the crossbar (200) is provided with a test component (400) and an adjustment component (500). The test component (400) includes a test line (410) and a pendulum ball (420) connected to the bottom end of the test line (410). The adjustment component (500) is connected to the pendulum ball (420) through a locking component (600) to adjust the release height of the pendulum ball (420). A secondary impact prevention assembly (300) includes an anti-collision cylinder (310) and an anti-collision line disposed on the upper end of the crossbar (200). One end of the anti-collision line is connected to the piston rod end of the anti-collision cylinder (310), and the other end is connected to the pendulum ball (420). The anti-collision cylinder (310) is configured to retract to pull the anti-collision line when the pendulum ball (420) swings back after hitting the photovoltaic module, thereby preventing the pendulum ball (420) from hitting the photovoltaic module a second time.

2. The anti-secondary impact impact test frame of claim 1, wherein: The upper end of the crossbar (200) away from the fixed frame (110) is provided with a first pulley (320), and the other end of the anti-collision line passes around the first pulley (320) and through the crossbar (200) to connect to the pendulum ball (420).

3. The anti-secondary impact impact test frame of claim 1, wherein: The adjustment assembly (500) includes an electric hoist (510), a second pulley (520), a swing arm (530), a third pulley (540), and an adjustment line. The electric hoist (510) is mounted on the crossbeam (120) of the upright frame (100). The lower end of the crossbeam (200) has a groove (210) along its length. The second pulley (520) is located in the groove (210) and is positioned close to the electric hoist (510). One end of the swing arm (530) is hinged to the lower end of the crossbeam (200). The rotation direction of 30) is towards or away from the fixed frame (110). The third pulley (540) is set in the groove (210) and located on the side away from the electric hoist (510). One end of the adjustment line is fixedly connected to the electric hoist (510). The other end of the adjustment line passes around the second pulley (520) and the third pulley (540) in sequence. The adjustment line passing around the third pulley (540) is fixedly connected to the swing arm (530). The locking component (600) is located at the end of the swing arm (530) away from the crossbar (200).

4. The anti-secondary impact impact test frame of claim 3, wherein: The locking assembly (600) includes a locking cylinder (610), a guide block (620), and a fixing block (630) disposed on the rocker arm (530). The fixing block (630) is located on the lower end of the rocker arm (530) away from the fixing frame (110). The guide block (620) is located on the side of the fixing block (630) close to the fixing frame (110). The locking cylinder (610) is located on the side of the guide block (620) close to the fixing frame (110). A gap (640) is left between the guide block (620) and the fixed block (630). The guide block (620) and the fixed block (630) are coaxially provided with a guide hole. The piston rod of the locking cylinder (610) extends or retracts in the guide hole. The piston rod of the locking cylinder (610) abuts against the fixed block (630). The pendulum ball (420) is provided with a locking line. The locking line is located in the gap (640). The piston rod of the locking cylinder (610) passes through the locking line.

5. The anti-secondary impact impact test frame of claim 3, wherein: The bottom of the crossbar (200) is vertically provided with two side plates (220), which are located on both sides of the swing rod (530). The swing rod (530) is hinged to the side plates (220). Both side plates (220) are provided with horizontal waist-shaped holes (221). An adjusting bolt (222) is inserted into the waist-shaped hole (221), and an adjusting nut (223) is provided on the adjusting bolt (222).

6. The anti-secondary impact impact testing frame of claim 3, wherein: A support rod (130) is provided on one side of the stand (100). The support rod (130) is located on the side of the fixed frame (110) away from the swing rod (530). One end of the support rod (130) is fixedly connected to the bottom end of the stand (100), and the other end of the support rod (130) is fixedly connected to the side above the stand (100). The support rod (130) and the stand (100) form a triangle.

7. The anti-secondary impact impact testing frame of claim 1, wherein: The pendulum ball (420) is a shotgun.

8. The anti-secondary impact impact testing frame of claim 3, wherein: The crossbar (200) is provided with a reinforcing rod (230), one end of the reinforcing rod (230) is fixedly connected to the crossbar (200), and the other end of the reinforcing rod (230) is fixedly connected to the crossbeam (120). The crossbar (200), the reinforcing rod (230) and the upright (100) form a triangle.

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