A subway ring handle swing endurance test device

Abstract

The utility model discloses a subway ring handle swing endurance test device, the surface center position fixed mounting of support frame has the fixed frame, the surface one side center position fixed mounting of fixed frame has the mounting panel, the surface one side fixed mounting of mounting panel has the pneumatic cylinder, the surface one side telescopic mounting of pneumatic cylinder has the hydraulic telescopic link, the surface one side fixed mounting of hydraulic telescopic link has the locating sleeve piece, the inside swing sleeve joint of locating sleeve piece has the locating rod, the utility model fixed plate sliding slot and slide rod, the cooperation of snap ring etc. provide stable track for locating sleeve piece movement, and the stability of test is convenient for maintaining and guaranteeing, the slide rod and hydraulic telescopic link synchronous telescopic and in the sliding slot sliding, have strengthened the accuracy and directivity of locating sleeve piece movement, the ring handle body and hydraulic telescopic link synchronous swing, have guaranteed the movement state and the preset program consistent, have improved the accuracy and repeatability of test.

Description

Technical Field

[0001] This utility model relates to the field of subway handrail durability testing technology, specifically a subway handrail swing durability testing device. Background Technology

[0002] As the core carrier of urban public transportation, the subway undertakes the task of transporting a massive number of passengers every day, and its operational safety and comfort are directly related to the travel experience of citizens. Handrails, as important gripping components for passengers standing in subway cars, are key facilities for ensuring passenger balance during vehicle start-up, braking, and turning. In actual use, handrails must withstand the pulling and swaying forces of passengers of different weights, as well as the continuous vibration and oscillation forces generated during vehicle movement: when the train accelerates or decelerates, the inertia of passengers' bodies will cause the handrails to experience sudden lateral pulling forces; when the train turns, centrifugal force will cause the handrails to swing rhythmically from side to side; and the process of different passengers alternately gripping and releasing will cause the handrails to frequently experience intermittent changes in pulling force.

[0003] Currently, when testing the quality of subway handrails, most tests only check if they can withstand a fixed weight—that is, hanging a fixed weight on them and testing whether they will break. However, this testing method has hidden dangers. It does not take into account the impact of the handrails constantly swaying during actual use on their durability. When riding the subway, the handrails swing back and forth when the train starts, stops, and turns; different passengers also apply varying amounts of force and direction when holding them. Under different forces and amplitudes of swaying, simply using a fixed weight test cannot determine whether the subway handrails are up to standard, nor can it guarantee passenger safety.

[0004] Therefore, this utility model provides a device for testing the swing durability of subway handrails to solve the above problems. Utility Model Content

[0005] This invention provides a device for testing the swing durability of subway handrails, aiming to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A subway handrail swing durability testing device includes a base and a durability testing mechanism, the durability testing mechanism being slidably mounted on the top of the base.

[0008] Support frames are fixedly installed on both sides of the top of the base, and protective nets are fixedly installed at the bottom of the support frames.

[0009] The durability testing mechanism includes a fixed rod, a sleeve rod that slides onto the surface of the fixed rod, a lifting ring handle body that is detachably snapped onto the bottom of the sleeve rod, a snap-fit ​​plate that is movably snapped onto the surface of the lifting ring handle body, and a swing rod that is movably installed at the bottom of the snap-fit ​​plate.

[0010] A fixed frame is fixedly installed at the center of the support frame surface. A mounting plate is fixedly installed at the center of one side of the fixed frame surface. A cylinder is fixedly installed on one side of the mounting plate surface. A hydraulic telescopic rod is telescopically installed on one side of the cylinder surface. A positioning sleeve is fixedly installed on one side of the hydraulic telescopic rod surface. A positioning rod is movably connected inside the positioning sleeve.

[0011] The support frames on both sides of the top of the base and the protective net at the bottom can provide effective protection during the test, preventing the lifting ring handle body and the weighing block from accidentally falling off due to back-and-forth swaying and causing safety hazards, thus ensuring a safe testing environment. In the durability testing mechanism, the detachable snap-fit ​​connection between the lifting ring handle body and the sleeve rod facilitates quick replacement of the test piece and improves testing efficiency. Furthermore, by using a cylinder to drive the hydraulic telescopic rod, which in turn drives the positioning sleeve block and positioning rod to act on the swing rod, the swing frequency and amplitude of the lifting ring handle body can be precisely controlled, enabling accurate and efficient testing of its swing durability.

[0012] As a further optimization, the positioning rod runs through the inside of the positioning sleeve and extends to the upper and lower sides of the positioning sleeve. The upper end of the positioning rod is fixedly connected to the bottom of the swing rod, and a hook is fixedly installed at the bottom of the positioning rod. A weighing block is movably engaged on the surface of the hook. The positioning sleeve provides stable limiting for the positioning rod, ensuring the linearity and stability of the positioning rod when it drives the swing rod, and preventing swaying from affecting the test accuracy. The cooperation between the hook and the weighing block allows for flexible adjustment of the weight according to test requirements, accurately simulating the stress on the handrail body under different passenger pulling forces, making the test data more consistent with actual usage scenarios.

[0013] As a further optimization, the weighing block slides and adjusts between the base and the fixed frame via a cylinder and a hydraulic telescopic rod, and a protective net is set around the outer surface of the weighing block. The sliding adjustment function allows the weighing block to dynamically change its position during the test, simulating the durability performance of the lifting ring handle under different stress positions, enriching the test dimensions. The protective net can completely wrap the weighing block, effectively preventing damage to the equipment and operators when it slides or accidentally falls off, further improving the safety of the test process.

[0014] As a further optimization, fixed plates are fixedly installed on both sides of the upper surface of the fixed frame. A sliding groove is opened on one side of the fixed plate surface. Snap rings are detachably engaged on both sides of the positioning sleeve surface. Limiting plates are fixedly installed on the surface of the snap rings. A sliding rod is fixedly installed on one side of the limiting plate surface. The fixed plate and the sliding groove provide a stable sliding track for the sliding rod. The detachable connection between the snap rings and the positioning sleeve facilitates the maintenance or replacement of related components in the future. The limiting plate fixes the snap rings, ensuring that the movement of the positioning sleeve under the drive of the hydraulic telescopic rod always stays within the preset trajectory, ensuring the stability and reliability of the test.

[0015] As a further optimization, the slide bar moves synchronously with the hydraulic telescopic rod, and one side of the slide bar slides on the surface of the groove. The synchronous telescopic movement ensures the consistency of the movement of the slide bar and the hydraulic telescopic rod, making the movement of the positioning sleeve more precise and controllable. The sliding of the slide bar in the groove further enhances the guidance and stability of the positioning sleeve during movement.

[0016] As a further optimization, the lifting ring handle body is adjusted by synchronous extension and retraction of the swing rod and the hydraulic telescopic rod. The synchronous adjustment mechanism allows the swing amplitude and frequency of the lifting ring handle body to correspond precisely with the extension and retraction parameters of the hydraulic telescopic rod, ensuring that the movement state of the lifting ring handle body follows the preset program during the test, thereby improving the accuracy and repeatability of the test.

[0017] As a further optimization, the top of the lifting ring handle body is fixed by a sleeve rod, and the sleeve rod is perpendicular to the positioning rod. The sleeve rod fixes the top of the lifting ring handle body, which can provide a stable support point and ensure the firmness of the top connection of the lifting ring handle body during swinging, avoiding additional deformation caused by unstable fixing that would affect the test results.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] 1. The fixed plate slide groove, slide rod, retaining ring, etc., provide a stable track for the movement of the positioning sleeve block, which is convenient for maintenance and ensures the stability of the test; the slide rod and the hydraulic telescopic rod extend and retract synchronously and slide in the slide groove, which enhances the accuracy and guidance of the positioning sleeve block movement; the lifting ring handle body swings synchronously with the hydraulic telescopic rod, ensuring that the movement state is consistent with the preset program, improving the accuracy and repeatability of the test.

[0020] 2. The positioning rod passes through the positioning sleeve and connects the swing rod to the hook with the weighing block, which not only ensures the linearity and stability of the movement, but also allows for precise simulation of different passenger pulling forces by adding or removing the weighing block, making the test data more realistic; the weighing block is adjustable and wrapped in a protective net, which not only enriches the test dimensions, but also further improves safety. Attached Figure Description

[0021] Figure 1This is a schematic diagram of the connection structure of the base, support frame, and protective net of this utility model;

[0022] Figure 2 This is a schematic diagram of the durability testing mechanism of this utility model;

[0023] Figure 3 This is a schematic diagram of the connection structure of the fixing frame, cylinder, hydraulic telescopic rod and slide groove of this utility model;

[0024] Figure 4 for Figure 3 Enlarged structural diagram at point A;

[0025] Figure 5 This is a schematic diagram of the connection structure between the hook and the weighing block of this utility model.

[0026] In the picture:

[0027] 100. Base; 101. Support frame; 102. Protective netting;

[0028] 200. Durability testing mechanism; 201. Fixing rod; 202. Sleeve rod; 203. Lifting ring handle body; 204. Snap-fit ​​plate; 205. Swing rod; 206. Fixing frame; 207. Mounting plate; 208. Cylinder; 209. Hydraulic telescopic rod; 210. Fixing plate; 211. Slide groove; 212. Positioning sleeve block; 213. Snap ring; 214. Limiting plate; 215. Slide rod; 216. Positioning rod;

[0029] 300. Hook; 301. Weighing block. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] This utility model provides a device for testing the swing durability of subway handrails, such as... Figures 1 to 5 As shown, it includes a base 100 and a durability testing mechanism 200, with the durability testing mechanism 200 slidably mounted on top of the base 100.

[0032] Support frames 101 are fixedly installed on both sides of the top of the base 100, and a protective net 102 is fixedly installed at the bottom of the support frame 101.

[0033] The durability testing mechanism 200 includes a fixed rod 201, a sleeve rod 202 that is slidably sleeved on the surface of the fixed rod 201, a lifting ring handle body 203 that is detachably snapped onto the bottom of the sleeve rod 202, a snap-fit ​​plate 204 that is movably snapped onto the surface of the lifting ring handle body 203, and a swing rod 205 that is movably installed at the bottom of the snap-fit ​​plate 204.

[0034] A fixed frame 206 is fixedly installed at the center of the surface of the support frame 101. A mounting plate 207 is fixedly installed at the center of one side of the surface of the fixed frame 206. A cylinder 208 is fixedly installed on one side of the surface of the mounting plate 207. A hydraulic telescopic rod 209 is telescopically installed on one side of the surface of the cylinder 208. A positioning sleeve 212 is fixedly installed on one side of the surface of the hydraulic telescopic rod 209. A positioning rod 216 is movably sleeved inside the positioning sleeve 212.

[0035] The support frames 101 on both sides of the top of the base 100 and the protective net 102 at the bottom can form effective protection during the test, preventing the lifting ring handle body 203 and the weighing block 301 from accidentally falling off due to back and forth shaking, thus ensuring the safety of the test environment. In the durability testing mechanism 200, the detachable snap-fit ​​between the lifting ring handle body 203 and the sleeve rod 202 facilitates quick replacement of the test piece and improves testing efficiency. Furthermore, by driving the hydraulic telescopic rod 209 through the cylinder 208, the positioning sleeve block 212 and the positioning rod 216 act on the swing rod 205, which can accurately control the swing frequency and amplitude of the lifting ring handle body 203, thereby achieving accurate and efficient testing of its swing durability.

[0036] like Figure 3-5 As shown, the positioning rod 216 passes through the interior of the positioning sleeve block 212 and extends to the upper and lower sides of the positioning sleeve block 212. The upper end of the positioning rod 216 is fixedly connected to the bottom of the swing rod 205. A hook 300 is fixedly installed at the bottom of the positioning rod 216. A weighing block 301 is movably engaged on the surface of the hook 300. By stably limiting the positioning rod 216 through the positioning sleeve block 212, the linearity and stability of the positioning rod 216 driving the swing rod 205 can be ensured, avoiding shaking that affects the test accuracy. The cooperation between the hook 300 and the weighing block 301 allows for flexible adjustment of the weight according to test requirements, accurately simulating the force on the handrail body 203 under different passenger pulling forces, making the test data more consistent with actual use scenarios.

[0037] like Figure 3 and Figure 5As shown, the weighing block 301 slides and adjusts between the base 100 and the fixed frame 206 via the cylinder 208 and the hydraulic telescopic rod 209. The protective net 102 is set around the outer surface of the weighing block 301. The sliding adjustment function allows the weighing block 301 to dynamically change its position during the test, simulating the durability performance of the lifting ring handle body 203 under different stress positions, thus enriching the test dimensions. The protective net 102 can completely wrap the weighing block 301, effectively preventing damage to the equipment and operators when it slides or accidentally falls off, further improving the safety of the test process.

[0038] like Figure 3 and Figure 4 As shown, fixing plates 210 are fixedly installed on both sides of the upper surface of the fixing frame 206. A sliding groove 211 is opened on one side of the surface of the fixing plate 210. The positioning sleeve block 212 is detachably snapped with retaining rings 213 on both sides of the surface. A limiting plate 214 is fixedly installed on the surface of the retaining ring 213. A sliding rod 215 is fixedly installed on one side of the surface of the limiting plate 214. The fixing plate 210 and the sliding groove 211 provide a stable sliding track for the sliding rod 215. The detachable connection between the retaining ring 213 and the positioning sleeve block 212 facilitates the maintenance or replacement of related components in the future. The limiting plate 214 plays a role in fixing the retaining ring 213, ensuring that the movement of the positioning sleeve block 212 driven by the hydraulic telescopic rod 209 always stays within the preset trajectory, ensuring the stability and reliability of the test.

[0039] like Figure 3 and Figure 4 As shown, the slide rod 215 moves synchronously with the hydraulic telescopic rod 209, and one side of the slide rod 215 slides on the surface of the groove 211. The synchronous telescopic movement ensures the consistency of the movement of the slide rod 215 and the hydraulic telescopic rod 209, making the movement of the positioning sleeve 212 more precise and controllable. The sliding of the slide rod 215 in the groove 211 further enhances the guidance and stability of the positioning sleeve 212 during movement.

[0040] like Figure 2 and Figure 3 As shown, the lifting ring handle body 203 is adjusted by the synchronous extension and retraction of the swing rod 205 and the hydraulic telescopic rod 209. The synchronous adjustment mechanism can make the swing amplitude and frequency of the lifting ring handle body 203 correspond precisely with the extension and retraction parameters of the hydraulic telescopic rod 209, ensuring that the movement state of the lifting ring handle body 203 is carried out according to the preset program during the test, thereby improving the accuracy and repeatability of the test.

[0041] like Figure 1 and Figure 2As shown, the top of the lifting ring handle body 203 is fixed by the sleeve rod 202, and the sleeve rod 202 is perpendicular to the positioning rod 216. The sleeve rod 202 fixes the top of the lifting ring handle body 203, providing it with a stable support point and ensuring the firmness of the top connection of the lifting ring handle body 203 during swinging, avoiding additional deformation due to unstable fixing that could affect the test results.

[0042] When applying this utility model, the lifting ring handle body 203 is detachably snapped onto the fixed rod 201 via the sleeve rod 202. The vertical correspondence between the sleeve rod 202 and the positioning rod 216 ensures its top is firmly fixed. Simultaneously, the lifting ring handle body 203 is movably connected to the swing rod 205 via the snap-fit ​​plate 204. During testing, the cylinder 208 drives the hydraulic telescopic rod 209 to extend and retract, causing the positioning sleeve block 212 and the positioning rod 216 passing through it to move. The upper end of the positioning rod 216 is connected to the swing rod 205, thereby causing the lifting ring handle body 203 to synchronously extend and retract, achieving precise control of its swing frequency and amplitude. The snap rings 213 on both sides of the positioning sleeve block 212 connect the limiting plate 214 and the sliding rod 215. The sliding rod 215 is located on the fixed plate 210. The slide 211 slides synchronously with the hydraulic telescopic rod 209, providing stable guidance for the movement of the positioning sleeve 212 and ensuring the accuracy of the overall movement trajectory. A weighing block 301 is engaged with the hook 300 at the bottom of the positioning rod 216. The weight can be increased or decreased according to the test requirements to simulate different passenger pulling forces. The weighing block 301 can slide between the base 100 and the fixed frame 206 under the action of the cylinder 208 and the hydraulic telescopic rod 209 to simulate different force positions. During the entire test, the support frames 101 on both sides of the base 100 and the protective net 102 at the bottom effectively protect the hanging ring handle body 203 and the weighing block 301, avoiding accidental fall and safety hazards, thereby achieving accurate and efficient testing of the swing durability of the hanging ring handle body 203.

[0043] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A durability testing device for the swing of a subway handrail, comprising a base (100) and a durability testing mechanism (200), characterized in that: The durability testing mechanism (200) is slidably mounted on top of the base (100); The base (100) has a support frame (101) fixedly installed on both sides of the top, and a protective net (102) is fixedly installed at the bottom of the support frame (101). The durability testing mechanism (200) includes a fixed rod (201), a sleeve rod (202) is slidably sleeved on the surface of the fixed rod (201), a lifting ring handle body (203) is detachably snapped onto the bottom of the sleeve rod (202), a snap-fit ​​plate (204) is movably snapped onto the surface of the lifting ring handle body (203), and a swing rod (205) is movably installed at the bottom of the snap-fit ​​plate (204). A fixing frame (206) is fixedly installed at the center of the surface of the support frame (101). A mounting plate (207) is fixedly installed at the center of one side of the surface of the fixing frame (206). A cylinder (208) is fixedly installed on one side of the surface of the mounting plate (207). A hydraulic telescopic rod (209) is telescopically installed on one side of the surface of the cylinder (208). A positioning sleeve (212) is fixedly installed on one side of the surface of the hydraulic telescopic rod (209). A positioning rod (216) is movably sleeved inside the positioning sleeve (212).

2. The subway handrail swing durability testing device according to claim 1, characterized in that: The positioning rod (216) passes through the interior of the positioning sleeve (212) and extends to the upper and lower sides of the positioning sleeve (212). The upper end of the positioning rod (216) is fixedly connected to the bottom of the swing rod (205). A hook (300) is fixedly installed at the bottom of the positioning rod (216). A weighing block (301) is movably engaged on the surface of the hook (300).

3. The subway handrail swing durability testing device according to claim 2, characterized in that: The weighing block (301) is slidably adjusted between the base (100) and the fixed frame (206) by means of a cylinder (208) and a hydraulic telescopic rod (209), and the protective net (102) is arranged around the outer surface of the weighing block (301).

4. The subway handrail swing durability testing device according to claim 1, characterized in that: The upper surface of the fixed frame (206) is fixedly mounted with fixed plates (210) on both sides. A sliding groove (211) is opened on one side of the surface of the fixed plate (210). The positioning sleeve (212) is detachably snapped with retaining rings (213) on both sides. A limiting plate (214) is fixedly mounted on the surface of the retaining ring (213). A sliding rod (215) is fixedly mounted on one side of the surface of the limiting plate (214).

5. The subway handrail swing durability testing device according to claim 4, characterized in that: The slide bar (215) moves synchronously through the hydraulic telescopic rod (209), and one side of the slide bar (215) slides on the surface of the groove (211).

6. The subway handrail swing durability testing device according to claim 1, characterized in that: The lifting ring handle body (203) is adjusted by synchronous extension and retraction of the swing rod (205) and the hydraulic telescopic rod (209).

7. The subway handrail swing durability testing device according to claim 1, characterized in that: The top of the lifting ring handle body (203) is fixed by a sleeve rod (202), and the sleeve rod (202) is perpendicular to the positioning rod (216).

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