Device for detecting strength of glass fiber reinforced plastic profile

The electric push rod and spring mechanism prevent excessive clamping, combined with the automated conveying and cleaning device, the problem of clamping damage in the fiberglass fiber profile detection device is solved, and efficient and safe strength detection is achieved.

CN120293709AInactive Publication Date: 2025-07-11CHANGSHU GULI FIBERGLASS FACTORY

Patent Information

Application Number
CN202510511482.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-04-23
Publication Date
2025-07-11
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a glass fiber reinforced plastic fiber profile strength detection device, and relates to the technical field of testing, the glass fiber reinforced plastic fiber profile strength detection device comprises a base, the top of the base is fixedly provided with a shell, the top of the shell is fixedly provided with a top cover, and an electric telescopic rod penetrates through and is slidably installed on the inner wall and the outer wall of the shell; the clamp is fixedly installed on the surface of the movable end of the electric telescopic rod, the electric push rod penetrates through and is slidably installed at the top of the clamp, the push plate B is fixedly installed at the bottom of the output end of the electric push rod, a first spring is arranged at the bottom of the push plate B, the push plate A is fixedly installed at the bottom of the first spring, and the first spring drives the push plate A to reset. And the push plate B moves to drive the push plate A to move, so that after the push plate A clamps the glass fiber reinforced plastic, the push plate B cannot continuously move towards the glass fiber reinforced plastic, the clamping injury caused by excessive clamping is prevented, and the protection of the glass fiber reinforced plastic is improved.
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Description

Technical Field

[0001] The present invention relates to the technical field of testing, and specifically to a strength detection device for fiberglass profiles. Background Art

[0002] A strength detection device for fiberglass profiles is a device used to measure the strength and other mechanical properties of fiberglass (also known as glass fiber reinforced plastic) profiles.

[0003] The patent with the patent announcement number CN114252349B relates to a strength detection device for fiberglass profiles, including a machine body. There is a test chamber and a drive chamber inside the machine body. There is an out-through groove penetrating outward in each of the left and right side surfaces of the test chamber. There is a communication groove respectively provided in the left and right side surfaces of the drive chamber and communicating downward with the test chamber. A carrier plate is slidably connected up and down in the drive chamber. The present invention can shear fiberglass to intercept small sections of fiberglass for testing, increasing the convenience of testing. And the shearing action can make the left and right cross-sections of the fiberglass for testing flat, reducing the error of subsequent wear resistance testing. The present invention can conduct impact testing or bending strength testing on fiberglass through a detection block, increasing the reliability of the test results. When conducting impact testing or bending strength testing, the fiberglass may be broken, then this patent can continue to conduct tensile, compressive and wear resistance testing on the broken fiberglass, reducing the test materials.

[0004] In the above patent, it can continue to conduct tensile, compressive and wear resistance testing on the broken fiberglass, reducing the test materials. However, when clamping the fiberglass before measurement, it may over-clamp the fiberglass, and over-clamping will cause damage to the fiberglass, resulting in inaccurate actual measured data. If the measurement results are not accurate enough, it may lead to the reliability of the fiberglass during operation. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a strength detection device for fiberglass profiles, which solves the problems raised in the above background art.

[0006] To achieve the above purposes, the present invention is realized through the following technical solutions: A strength detection device for fiberglass profiles, including a base, a housing is fixedly installed on the top of the base, a top cover is fixedly installed on the top of the housing, a hydraulic detection device penetrates and is slidably installed on the top of the top cover, and a clamping device, a conveying device and a protection device are arranged on the top of the base;

[0007] Among them, the clamping device includes: an electric telescopic rod, a clamp, an electric push rod, a push plate A, a push plate B, a transmission rod, a fixed block, an arc block, a button and a hollow box. The electric telescopic rod penetrates and is slidably installed on the inner and outer walls of the housing. The clamp is fixedly installed on the surface of the movable end of the electric telescopic rod. The electric push rod penetrates and is slidably installed on the top of the clamp. The push plate B is fixedly installed at the bottom of the output end of the electric push rod. A first spring is arranged at the bottom of the push plate B. The push plate A is fixedly installed at the bottom of the first spring. The movement of the push plate B drives the movement of the push plate A. The transmission rod penetrates and is slidably installed on the inner and outer walls of the push plate B. The transmission rod penetrates and is slidably installed on the top of the clamp. The fixed block is fixedly installed on the top of the clamp. A rotating groove is formed on the surface of the fixed block. The arc block is rotatably installed in the rotating groove of the fixed block. The button is arranged on the top of the clamp. The hollow box is fixedly installed at the bottom of the clamp.

[0008] According to the above technical solution, a first spring is arranged between the push plate A and the push plate B. The button is electrically connected to the electric push rod. The push plate A is driven to reset by the first spring.

[0009] According to the above technical solution, the transmission rod contacts the arc block. The arc block contacts the button. A counterweight block is arranged on the surface of the transmission rod.

[0010] According to the above technical solution, the conveying device includes: a tray, a sliding plate, a transmission block, a transmission rod, a rotating shaft, a gear A, a gear B, a gear C, an impact block and a brush. The tray is fixedly installed on the top of the base. The sliding plate is slidably installed inside the tray. The transmission block is fixedly installed on the top of the sliding plate. One end of the transmission rod is rotatably installed on the surface of the transmission block. The rotation of the transmission rod drives the transmission block to move upward. The other end of the transmission rod is rotatably installed on the surface of the hollow box. The rotating shaft is rotatably installed on the surface of the sliding plate. The brush is rotatably installed on the surface of the sliding plate. The gear A is fixedly installed on the circumferential surface of the rotating shaft. The gear B is fixedly installed on the circumferential surface of the brush. The gear A meshes with the gear B. The rotation of the gear A drives the rotation of the gear B. The gear C is fixedly installed on the circumferential surface of the brush. The impact block is fixedly installed on the surface of the sliding plate.

[0011] According to the above technical solution, the gear C contacts the impact block. A roller is arranged on the surface of the rotating shaft.

[0012] According to the above technical solution, the protection device includes: a glass door, a limiting plate, a limiting hook, a sliding rod, a handle, a bracket and a clamping rod. The glass door is slidably installed on the top of the base. The limiting plate is fixedly installed on the surface of the glass door. The limiting hook is rotatably installed on the surface of the sliding plate.

[0013] According to the above technical solution, the protection device further includes: the sliding rod penetrates the surface of the housing, the handle is fixedly installed on the surface of the sliding rod, and the rotation of the handle drives the rotation of the sliding rod. The bracket is fixedly installed on the top of the base, and the clamping rod is fixedly installed on the circumferential surface of the sliding rod.

[0014] According to the above technical solution, the clamping rod contacts the limit hook, and a second spring is arranged between the sliding rod and the housing, and the sliding rod is driven to reset by the second spring.

[0015] The present invention provides a device for detecting the strength of fiberglass profiles. It has the following beneficial effects:

[0016] (1) In this invention, the output end of the electric push rod drives the B push plate to move towards the fiberglass, realizing the clamping of the fiberglass, ensuring that the position of the fiberglass does not shift during the strength detection, guaranteeing the accuracy of the detection. After the A push plate clamps the fiberglass, the A push plate will push the transmission rod to move. The movement of the transmission rod will push the arc-shaped block to rotate. When the arc-shaped block rotates, it will contact the button. After contacting the button, the button will control the electric push rod to stop moving, so that after the A push plate clamps the fiberglass, the B push plate cannot continue to move towards the fiberglass, preventing the clamping injury caused by over-clamping and improving the protection of the fiberglass.

[0017] (2) In this invention, the rotation of the rotating shaft drives the rotation of the roller, and the rotation of the roller transports the fiberglass to the bottom of the hydraulic detection device. There is no need for manual placement of the fiberglass by workers, saving working time and improving work efficiency. The rotation of the rotating shaft drives the rotation of the A gear, the rotation of the A gear drives the rotation of the B gear, the rotation of the B gear drives the rotation of the brush, and the rotation of the brush sweeps away the dust and impurities on the surface of the fiberglass to ensure the accuracy and comparability of the test results. When the detection work is no longer carried out, the electric telescopic rod drives the clamping device to move away from the hydraulic detection device. When the clamping device moves, it drives the transmission rod to move. The movement of the transmission rod drives the transmission block to move upward. When the transmission block moves, it drives the sliding plate to move. After the sliding plate moves to the topmost position, its surface is higher than the tray, so that the fiberglass will not contact the tray during transportation, preventing the fiberglass from being scratched by friction with the tray during transportation and improving the protection effect on the fiberglass.

[0018] (3) In this invention, after the fiberglass is placed, the glass door is manually closed, which can prevent the fiberglass from flying off or breaking when it is squeezed during the detection, thus protecting the staff from harm, improving the safety of the staff during operation, and reducing the occurrence of accidents. During the detection, the electric telescopic rod drives the clamping device to move towards the bottom of the hydraulic detection device. The movement of the clamping device drives the transmission rod to move, the movement of the transmission rod drives the transmission block to move downward, the movement of the transmission block drives the sliding plate to move, the movement of the sliding plate drives the limit hook to move, and the limit hook contacts the limit plate and limits the limit plate. When the strength detection is carried out, the staff cannot open the glass door, preventing the staff from being accidentally touched or being harmed by the broken or flying fiberglass when they open the glass door without knowing that the detection is in progress, further improving the safety. By manually pushing the handle towards the housing, the movement of the handle drives the clamping rod to move. The movement of the clamping rod contacts the limit hook. By turning the handle away from the glass door, the rotation of the handle drives the clamping rod to rotate, and the rotation of the clamping rod drives the limit hook to rotate, releasing the limit of the limit hook on the limit plate. In case of an emergency, the glass door can also be opened, preventing the glass door from not being opened in case of a special situation and improving the protection of the device. Description of the Drawings

[0019] Figure 1 Schematic diagram of the overall structure of the present invention;

[0020] Figure 2 Schematic diagram of the sectional structure of the present invention;

[0021] Figure 3 Schematic diagram of the structure of the clamping device of the present invention;

[0022] Figure 4 For the present invention Figure 3 Enlarged schematic diagram of the structure of part A in;

[0023] Figure 5 Schematic diagram of the structure of the conveying device of the present invention;

[0024] Figure 6 Schematic diagram of the positional relationship between gear A and gear B of the present invention;

[0025] Figure 7 Schematic diagram of the positional relationship between the glass door and the limit plate of the present invention;

[0026] Figure 8 Schematic diagram of the structure of the protection device of the present invention;

[0027] Figure 9 For the present invention Figure 8 Enlarged schematic diagram at A in.

[0028] In the figure: 1. Base; 2. Outer shell; 3. Top cover; 4. Hydraulic detection device; 51. Electric telescopic rod; 52. Fixture; 53. Electric push rod; 54. A push plate; 55. B push plate; 56. Transmission rod; 57. Fixed block; 58. Arc block; 59. Button; 510. Hollow box; 61. Tray; 62. Sliding plate; 63. Transmission block; 64. Transmission rod; 65. Rotating shaft; 66. A gear; 67. B gear; 68. C gear; 69. Impact block; 610. Brush; 71. Glass door; 72. Limiting plate; 73. Limiting hook; 74. Sliding rod; 75. Handle; 76. Bracket; 77. Positioning rod. Detailed implementation manner

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] Please refer to Figures 1-6 , an embodiment of the present invention is: a strength detection device for fiberglass profiles, including a base 1, an outer shell 2 is fixedly installed on the top of the base 1, a top cover 3 is fixedly installed on the top of the outer shell 2, a hydraulic detection device 4 is installed through and slidably on the top of the top cover 3, and a clamping device, a conveying device and a protection device are arranged on the top of the base 1;

[0031] The clamping device includes: an electric telescopic rod 51, a fixture 52, an electric push rod 53, an A push plate 54, a B push plate 55, a transmission rod 56, a fixed block 57, an arc block 58, a button 59 and a hollow box 510. The electric telescopic rod 51 is installed through and slidably on the inner and outer walls of the outer shell 2, the fixture 52 is fixedly installed on the surface of the movable end of the electric telescopic rod 51, the electric push rod 53 is installed through and slidably on the top of the fixture 52, the B push plate 55 is fixedly installed on the bottom of the output end of the electric push rod 53, a first spring is arranged at the bottom of the B push plate 55, the A push plate 54 is fixedly installed at the bottom of the first spring, the transmission rod 56 is installed through and slidably on the inner and outer walls of the B push plate 55, the transmission rod 56 is installed through and slidably on the top of the fixture 52, the fixed block 57 is fixedly installed on the top of the fixture 52, a rotating groove is formed on the surface of the fixed block 57, the arc block 58 is rotatably installed in the rotating groove of the fixed block 57, the button 59 is arranged on the top of the fixture 52, and the hollow box 510 is fixedly installed on the bottom of the fixture 52. After the A push plate 54 clamps the fiberglass, the B push plate 55 cannot continue to move towards the fiberglass, realizing the prevention of clamping injury caused by excessive clamping and improving the protection of the fiberglass.

[0032] A push plate 54 and B push plate 55 are provided with a first spring. The button 59 is electrically connected to the electric push rod 53, and the A push plate 54 is driven by the first spring to reset.

[0033] The transmission rod 56 contacts the arc-shaped block 58, the arc-shaped block 58 contacts the button 59, and a counterweight block is arranged on the surface of the transmission rod 56.

[0034] The conveying device includes: a tray 61, a sliding plate 62, a transmission block 63, a transmission rod 64, a rotating shaft 65, an A gear 66, a B gear 67, a C gear 68, an impact block 69 and a brush 610. The tray 61 is fixedly installed on the top of the base 1. The sliding plate 62 is slidably installed on the inner wall of the tray 61. The transmission block 63 is fixedly installed on the top of the sliding plate 62. One end of the transmission rod 64 is rotatably installed on the surface of the transmission block 63. The other end of the transmission rod 64 is rotatably installed on the surface of the hollow box 510. The rotating shaft 65 is rotatably installed on the surface of the sliding plate 62. The brush 610 is rotatably installed on the surface of the sliding plate 62. The A gear 66 is fixedly installed on the circumferential surface of the rotating shaft 65. The B gear 67 is fixedly installed on the circumferential surface of the brush 610. The A gear 66 meshes with the B gear 67. The C gear 68 is fixedly installed on the circumferential surface of the brush 610. The impact block 69 is fixedly installed on the surface of the sliding plate 62. When the brush 610 rotates, it will sweep away the dust and impurities on the surface of the fiberglass to ensure the accuracy and comparability of the test results.

[0035] The C gear 68 contacts the impact block 69, and a roller is arranged on the surface of the rotating shaft 65.

[0036] When this embodiment works: Start the electric push rod 53. The movable end of the electric push rod 53 will drive the B push plate 55 to move towards the bottom of the fixture 52. The movement of the B push plate 55 drives the A push plate 54 to move, and the fiberglass to be detected can be clamped, ensuring that the position of the fiberglass will not shift during the strength test and guaranteeing the accuracy of the test. After the A push plate 54 clamps the fiberglass, the A push plate 54 will contact the transmission rod 56, and the A push plate 54 will push the transmission rod 56 to move upwards. The movement of the transmission rod 56 will contact one end of the arc-shaped block 58. The movement of the transmission rod 56 will drive the arc-shaped block 58 to rotate. The other end of the arc-shaped block 58 will contact the button 59 when it rotates. The rotation of the arc-shaped block 58 will press the button 59, so that after the A push plate 54 clamps the fiberglass, the B push plate 55 cannot continue to move towards the fiberglass, preventing clamping injuries caused by over-clamping and improving the protection of the fiberglass.

[0037] The rotation of the rotating shaft 65 drives the rotation of the surface roller. The rotation of the roller will transport the fiberglass to the bottom of the hydraulic testing device 4, eliminating the need for manual placement of the fiberglass, saving working time and improving work efficiency. The rotation of the rotating shaft 65 drives the rotation of gear A 66. The rotation of gear A 66 drives the rotation of gear B 67. The rotation of gear B 67 drives the rotation of the brush 610. The rotation of the brush 610 sweeps away the dust and impurities on the surface of the fiberglass to ensure the accuracy and comparability of the test results. The rotation of the brush 610 drives the rotation of gear C 68. The rotation of gear C 68 contacts the impact block 69 and the rotation of gear C 68 impacts the impact block 69. After being impacted, the impact block 69 will vibrate, causing the brush 610 to vibrate and enhancing the cleaning effect of the brush 610. When the clamping device is not working, the electric telescopic rod 51 drives the clamp 52 to move towards both ends close to the housing 2. The movement of the clamp 52 drives the movement of the hollow box 510. The movement of the hollow box 510 drives the rotation of the transmission rod 64. The rotation of the transmission rod 64 drives the transmission block 63 to move upwards. The movement of the transmission block 63 drives the movement of the sliding plate 62. The movement of the sliding plate 62 drives the movement of the roller on the surface of the rotating shaft 65. The roller is higher than the tray 61, so that when the fiberglass rotates on the surface of the roller, it will not contact the tray 61, preventing scratches on the fiberglass caused by friction between the fiberglass and the tray 61 and improving the protection effect on the fiberglass.

[0038] Please refer to Figures 1-9 , on the basis of the above embodiment, in another embodiment of the present invention, the protection device includes: a glass door 71, a limiting plate 72, a limiting hook 73, a sliding rod 74, a handle 75, a bracket 76 and a clamping rod 77. The glass door 71 is slidably installed on the top of the base 1. Manually pushing the glass door 71 away from the housing 2 can prevent the fiberglass from flying or breaking after being squeezed during the detection, which may cause harm to the staff, improving the safety of the staff during operation and reducing the occurrence of accidents. The limiting plate 72 is fixedly installed on the surface of the glass door 71. The limiting hook 73 is rotatably installed on the surface of the sliding plate 62, preventing the staff from accidentally touching or opening the glass door 71 when they don't know that the detection is in progress, which may cause harm from the splashing of the broken fiberglass, further improving the safety.

[0039] The protection device further includes: the sliding rod 74 penetrates the surface of the housing 2. The handle 75 is fixedly installed on the surface of the sliding rod 74. The bracket 76 is fixedly installed on the top of the base 1. The clamping rod 77 is fixedly installed on the circumferential surface of the sliding rod 74, preventing the glass door 71 from being unable to be opened in case of special circumstances and improving the protection of the device.

[0040] The clamping rod 77 contacts the limiting hook 73. A second spring is provided between the sliding rod 74 and the housing 2 to drive the sliding rod 74 to reset through the second spring.

[0041] During the operation of this embodiment: after the glass fiber reinforced plastic is clamped, manually push the glass door 71 away from the housing 2, which can prevent the glass fiber reinforced plastic from flying or breaking after being squeezed during the detection, thus avoiding harm to the staff, improving the safety of the staff during operation, and reducing the occurrence of accidents. When the hydraulic detection device 4 starts to work, the clamping device drives the transmission rod 64 to rotate. The rotation of the transmission rod 64 drives the transmission block 63 to move downward. The movement of the transmission block 63 drives the sliding plate 62 to move. The movement of the sliding plate 62 drives the limit hook 73 to move. The movement of the limit hook 73 contacts the limit plate 72 and limits the limit plate 72, so that the staff cannot open the glass door 71 during the strength detection, preventing the staff from being harmed by the fragmentation or flying of the glass fiber reinforced plastic in case of accidental contact or opening the glass door 71 without knowing that the detection is in progress, further improving the safety. Push the handle 75 towards the housing 2. The movement of the handle 75 drives the sliding rod 74 to move. The movement of the sliding rod 74 drives the clamping rod 77 to move. The clamping rod 77 contacts the limit hook 73. Then rotate the handle 75 away from the glass door 71. The rotation of the handle 75 drives the sliding rod 74 to rotate. The rotation of the sliding rod 74 drives the clamping rod 77 to rotate. The rotation of the clamping rod 77 drives the limit hook 73 to rotate, and the rotation of the limit hook 73 releases the limit on the limit plate 72, enabling the glass door 71 to be opened in case of an emergency, preventing the glass door 71 from not being able to be opened in case of a special situation, and improving the protection of the device.

[0042] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A strength detection device for a glass fiber reinforced plastic profile, comprising a base (1), characterized in that: The top of the base (1) is fixedly installed with a housing (2), the top of the housing (2) is fixedly installed with a top cover (3), the top of the top cover (3) is penetrated and slidably installed with a hydraulic detection device (4), and a clamping device, a conveying device and a protection device are arranged on the top of the base (1); The clamping device includes: an electric telescopic rod (51), a fixture (52), an electric push rod (53), a push plate A (54), a push plate B (55), a transmission rod (56), a fixed block (57), an arc-shaped block (58), a button (59) and a hollow box (510). The electric telescopic rod (51) is penetrated and slidably installed on the inner and outer walls of the housing (2), the fixture (52) is fixedly installed on the surface of the movable end of the electric telescopic rod (51), the electric push rod (53) is penetrated and slidably installed on the top of the fixture (52), the push plate B (55) is fixedly installed at the bottom of the output end of the electric push rod (53), a first spring is arranged at the bottom of the push plate B (55), the push plate A (54) is fixedly installed at the bottom of the first spring, the transmission rod (56) is penetrated and slidably installed on the inner and outer walls of the push plate B (55), the transmission rod (56) is penetrated and slidably installed on the top of the fixture (52), the fixed block (57) is fixedly installed on the top of the fixture (52), a rotating groove is formed on the surface of the fixed block (57), the arc-shaped block (58) is rotatably installed in the rotating groove of the fixed block (57), the button (59) is arranged on the top of the fixture (52), and the hollow box (510) is fixedly installed at the bottom of the fixture (52).

2. The strength detection device for a glass fiber reinforced plastic profile according to claim 1, wherein: A first spring is arranged between the push plate A (54) and the push plate B (55), and the button (59) is electrically connected to the electric push rod (53).

3. The strength detection device for a fiberglass fiber profile according to claim 2, characterized in that: The transmission rod (56) contacts the arc-shaped block (58), the arc-shaped block (58) contacts the button (59), and a counterweight block is arranged on the surface of the transmission rod (56).

4. An FRP fiber profile strength detection device according to claim 3, characterized in that: The conveying device includes: a tray (61), a sliding plate (62), a transmission block (63), a transmission rod (64), a rotating shaft (65), a gear A (66), a gear B (67), a gear C (68), an impact block (69) and a brush (610). The tray (61) is fixedly installed on the top of the base (1). The sliding plate (62) is slidably installed on the inner wall of the tray (61). The transmission block (63) is fixedly installed on the top of the sliding plate (62). One end of the transmission rod (64) is rotatably installed on the surface of the transmission block (63), and the other end of the transmission rod (64) is rotatably installed on the surface of the hollow box (510). The rotating shaft (65) is rotatably installed on the surface of the sliding plate (62). The brush (610) is rotatably installed on the surface of the sliding plate (62). The gear A (66) is fixedly installed on the circumferential surface of the rotating shaft (65). The gear B (67) is fixedly installed on the circumferential surface of the brush (610). The gear A (66) meshes with the gear B (67). The gear C (68) is fixedly installed on the circumferential surface of the brush (610). The impact block (69) is fixedly installed on the surface of the sliding plate (62).

5. The strength detection device for a glass fiber reinforced plastic profile according to claim 4, wherein: The gear C (68) contacts the impact block (69), and rollers are provided on the surface of the rotating shaft (65).

6. The strength detection device for a glass fiber reinforced plastic profile according to claim 5, characterized in that: The protection device includes: a glass door (71), a limit plate (72), a limit hook (73), a sliding rod (74), a handle (75), a bracket (76) and a positioning rod (77). The glass door (71) is slidably installed on the top of the base (1). The limit plate (72) is fixedly installed on the surface of the glass door (71). The limit hook (73) is rotatably installed on the surface of the sliding plate (62).

7. An FRP fiber profile strength detection device according to claim 6, characterized in that: The protection device further includes: the sliding rod (74) penetrates through the surface of the housing (2). The handle (75) is fixedly installed on the surface of the sliding rod (74). The bracket (76) is fixedly installed on the top of the base (1). The positioning rod (77) is fixedly installed on the circumferential surface of the sliding rod (74).

8. An apparatus for detecting the strength of a fiberglass profile according to claim 7, characterized in that: The positioning rod (77) contacts the limit hook (73), and a second spring is provided between the sliding rod (74) and the housing (2).

Citation Information

Patent Citations

  • A strength testing device for fiberglass profiles

    CN114252349B

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