Plastic pipe drop hammer impact testing machine

Abstract

The utility model relates to the technical field of testing machine equipment, and discloses a plastic pipe drop hammer impact testing machine which comprises a frame body, a clamping block is fixedly connected to the inner bottom surface of the frame body, and an impact testing device is arranged in the frame body. According to the plastic pipe drop hammer impact testing machine, the winding motor lifts the hammer head, tedious operation of manually lifting the hammer head by an operator is avoided, operation convenience and efficiency are improved, normal falling of the hammer head cannot be affected by the rotating speed of the winding motor, clamping stagnation or friction of the hammer head in the releasing process is prevented, and the service life of the hammer head is prolonged. The hammer head can be smoothly subjected to an impact test in a barrier-free state, the consistency and repeatability of each impact test can be maintained, the longitudinal position of the lifting block is adjusted, so that the testing machine can adapt to the test requirements of pipes with different sizes, the height of the hammer head is limited by the limiting hook, the hammer head can be lifted to the same height each time, and the test efficiency is improved. And the energy consistency of each impact is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of testing machine equipment, in particular to a drop hammer impact testing machine for plastic pipes. Background Art

[0002] The drop hammer impact tester is suitable for measuring the external impact resistance of various pipes, such as PVC-U water supply pipes, sewage pipes, low-pressure water supply pipes, low-pressure water delivery pipes, core foam pipes, double-wall corrugated pipes, PE water supply pipes, and sheets. It is also suitable for rigid plastic sheets, where the drop hammer component mainly falls by gravity.

[0003] According to a publicly disclosed plastic pipe drop hammer impact testing machine (Announcement No.: CN209400172U), the above application includes a frame, a support platform is provided inside the frame, a workbench with a V-shaped top cross-section is placed on the support platform, the pipe is placed on the workbench, and a drop hammer assembly is provided opposite the upper part of the pipe. A steel wire rope is connected to the top of the drop hammer assembly, and the steel wire rope passes through the through hole on the top of the frame and is connected to the fixed pulley fixedly installed on the upper end of the frame and the reel.

[0004] However, in actual use, the hammer head needs to be manually raised after each drop hammer impact test. Frequent manual lifting of the hammer head will cause physical fatigue to the operator, especially in the case of long-term, large-scale testing. The hammer head usually has a certain weight, and manual lifting will cause muscle fatigue and increase the burden on the operator. In view of this, we propose a drop hammer impact testing machine for plastic pipes. Utility Model Content

[0005] The purpose of the present invention is to provide a drop weight impact testing machine for plastic pipes to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a drop weight impact testing machine for plastic pipes, comprising a frame, a clamping block fixedly connected to the inner bottom surface of the frame, an impact testing device disposed inside the frame, and the impact testing device comprising:

[0007] A drop hammer assembly, the drop hammer assembly is arranged on the inner top surface of the frame, the drop hammer assembly includes a winding motor, the winding motor is fixedly connected to the inner top surface of the frame, the output end of the winding motor is fixedly connected to a rotating shaft, the side wall of the rotating shaft is fixedly connected to a limited trapezoidal block, and the outer wall of the rotating shaft is hinged with a toggle plate;

[0008] A winding sleeve, wherein the winding sleeve is sleeved on the outer wall of the rotating shaft, the inner wall of the winding sleeve is fixedly connected to a limiting triangular block, a connecting rope is wound around the outer wall of the winding sleeve, and the end face of the connecting rope is fixedly connected to a hammer head;

[0009] A limit assembly is provided on the side wall of the frame, and the limit assembly includes a mounting bracket, the mounting bracket is fixedly connected to the side wall of the frame, the top end surface of the mounting bracket is fixedly connected to an adjusting motor, the output end of the adjusting motor is fixedly connected to an adjusting screw, the side wall of the adjusting screw is threadedly connected to a lifting block, and the inner wall of the lifting block is hinged to a limit hook;

[0010] An adjusting cylinder, wherein the adjusting cylinder is fixedly connected to a side wall of the mounting frame, and an output end of the adjusting cylinder is fixedly connected to a limiting frame;

[0011] A vertical cylinder is fixedly connected to the top end surface of the hammer head, and an outer wall of the vertical cylinder is fixedly connected to a limiting block.

[0012] Preferably, a vertical rod is fixedly connected to the top end surface of the mounting frame, and the side wall of the vertical rod is sleeved with the lifting block. The vertical rod limits the lifting block so that the lifting block can move longitudinally.

[0013] Preferably, a vertical groove is provided on the side wall of the vertical cylinder, the connecting rope passes through the vertical cylinder, and the connecting rope is fixedly connected to the side wall of the hammer head through the vertical groove.

[0014] Preferably, the side of the limiting frame close to the limiting hook is set to be trapezoidal, and the upper bottom of the trapezoid is movably connected to the bottom surface of the limiting hook.

[0015] Preferably, the side wall of the frame is provided with an auxiliary falling component, and the auxiliary falling component includes a guide rail, and the guide rail is fixedly connected to the bottom end face of the mounting frame. The side wall of the mounting frame is slidably connected to a movable block, and the bottom of the movable block is fixedly connected to a counterweight block, and the movable block is socketed with a connecting rope.

[0016] Preferably, the side wall of the connecting rope is fixedly connected to a limiting ball, and the diameter of the limiting ball is larger than the diameter of the vertical groove, so that the limiting ball is stuck in the vertical groove, ensuring that the winding sleeve rotates to lift the hammer head.

[0017] Compared with the prior art, the present invention provides a drop weight impact testing machine for plastic pipes, which has the following beneficial effects:

[0018] 1. The plastic pipe drop hammer impact testing machine, through the provision of a drop hammer assembly and a limit assembly, the winding motor lifts the hammer head, avoiding the operator's tedious operation of manually lifting the hammer head, improving the convenience and efficiency of operation. The speed of the winding motor will not affect the normal fall of the hammer head, preventing the hammer head from getting stuck or rubbing during the release process, allowing the hammer head to smoothly perform impact tests in an unobstructed state, helping to maintain the consistency and repeatability of each impact test. By adjusting the longitudinal position of the lifting block, the testing machine can be adapted to the testing requirements of pipes of different sizes. The limit hook limits the height of the hammer head to ensure that the hammer head can be lifted to the same height each time. The cylinder is adjusted to pull the limit frame to release the hammer head, reducing the risk of accidental collision or misoperation and reducing potential dangers during equipment operation.

[0019] 2. The plastic pipe drop hammer impact tester uses a counterweight block to pull the connecting rope, reducing the resistance caused by the hammer head directly pulling the connecting rope, keeping the hammer head's speed stable throughout the falling process, avoiding uneven speed caused by rope friction or other factors, and ensuring energy consistency for each impact. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the cross-sectional structure of the lifting block of the utility model;

[0022] Figure 3 For this utility model Figure 2 Schematic diagram of the structure of the middle A area;

[0023] Figure 4 This is a schematic diagram of the lifting block structure of the utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the mounting frame of the utility model;

[0025] Figure 6 This is a schematic diagram of the structure of the drop hammer assembly of the utility model;

[0026] Figure 7 For this utility model Figure 6 Schematic diagram of the structure of the middle B area;

[0027] Figure 8 This is a schematic diagram of the cross-sectional structure of the winding sleeve of the utility model;

[0028] Figure 9 For this utility model Figure 8 Schematic diagram of the structure of area B.

[0029] In the figure: 1. frame; 2. clamping block; 3. drop hammer assembly; 301. winding motor; 302. rotating shaft; 303. limiting trapezoidal block; 304. toggle plate; 305. winding sleeve; 306. limiting triangle block; 307. connecting rope; 308. hammer head; 4. limiting assembly; 401. mounting frame; 402. adjusting motor; 403. adjusting screw; 404. lifting block; 405. limiting hook; 406. adjusting cylinder; 407. limiting frame; 408. vertical cylinder; 409. limiting block; 410. vertical rod; 411. vertical slot; 5. auxiliary falling assembly; 501. guide rail; 502. movable block; 503. counterweight block; 504. limiting ball. DETAILED DESCRIPTION

[0030] like Figures 1-9 As shown, the utility model provides a technical solution: a plastic pipe drop hammer impact testing machine, including a frame 1, a clamping block 2 is fixedly connected to the inner bottom surface of the frame 1, an impact testing device is arranged inside the frame 1, and the impact testing device includes a drop hammer assembly 3, a limit assembly 4, and an auxiliary falling assembly 5.

[0031] In one embodiment of the present utility model, the drop hammer assembly 3 is arranged on the inner top surface of the frame 1, and the drop hammer assembly 3 includes a winding motor 301, a rotating shaft 302, a limiting trapezoidal block 303, a toggle plate 304, a winding sleeve 305, a limiting triangle block 306, a connecting rope 307, and a hammer head 308. The winding motor 301 is fixedly connected to the inner top surface of the frame 1, and the output end of the winding motor 301 is fixedly connected to the rotating shaft 302. The side wall of the rotating shaft 302 is fixedly connected to the limiting trapezoidal block 303, and the outer wall of the rotating shaft 302 is hinged with the toggle plate 304.

[0032] The winding sleeve 305 is sleeved on the outer wall of the rotating shaft 302, the inner wall of the winding sleeve 305 is fixedly connected to the limiting triangle block 306, the outer wall of the winding sleeve 305 is wrapped with a connecting rope 307, and the end face of the connecting rope 307 is fixedly connected to the hammer head 308.

[0033] The limiting component 4 is arranged on the side wall of the frame 1, and the limiting component 4 includes a mounting frame 401, an adjusting motor 402, an adjusting screw 403, a lifting block 404, a limiting hook 405, an adjusting cylinder 406, a limiting frame 407, a vertical tube 408, a limiting block 409, a vertical rod 410, and a vertical slot 411. The mounting frame 401 is fixedly connected to the side wall of the frame 1, and the top end face of the mounting frame 401 is fixedly connected to the adjusting motor 402, and the output end of the adjusting motor 402 is fixedly connected to the adjusting screw 403, and the side wall of the adjusting screw 403 is threadedly connected to the lifting block 404, and the inner wall of the lifting block 404 is hinged to the limiting hook 405, and the top end face of the mounting frame 401 is fixedly connected to the vertical rod 410, and the side wall of the vertical rod 410 is socketed with the lifting block 404, and the vertical rod 410 limits the lifting block 404, so that the lifting block 404 can move longitudinally.

[0034] 406, and the adjusting cylinder 406 is fixedly connected to the side wall of the mounting frame 401. The output end of the adjusting cylinder 406 is fixedly connected to the limiting frame 407. The limiting frame 407 is set to a trapezoid on one side near the limiting hook 405. The upper bottom of the trapezoid is movably connected to the bottom surface of the limiting hook 405. The vertical cylinder 408 is fixedly connected to the top end surface of the hammer head 308. The outer wall of the vertical cylinder 408 is fixedly connected to the limiting block 409. The side wall of the vertical cylinder 408 is provided with a vertical groove 411. The connecting rope 307 passes through the vertical cylinder 408, and the connecting rope 307 is fixedly connected to the side wall of the hammer head 308 through the vertical groove 411. The side wall of the connecting rope 307 is fixedly connected to the limiting ball 504. The diameter of the limiting ball 504 is larger than the diameter of the vertical groove 411, so that the limiting ball 504 is stuck in the vertical groove 411, ensuring that the winding sleeve 305 rotates to lift the hammer head 308.

[0035] The winding motor 301 rotates forward, and the limiting trapezoidal block 303 limits the toggle plate 304, so that the toggle plate 304 pushes the limiting triangular block 306, thereby driving the winding sleeve 305 to rotate forward, so that the winding sleeve 305 rewinds the connecting rope 307 and lifts the hammer head 308 to a high position. When the winding motor 301 stops rotating, the hammer head 308 pulls the connecting rope 307 downward, and the winding sleeve 305 rotates in the opposite direction. At this time, the limiting trapezoidal block 303 cannot limit the toggle plate 304, so that the toggle plate 304 rotates, and the toggle plate 304 cancels the contact with the winding sleeve 305, so that the winding sleeve 305 can rotate in the opposite direction smoothly. , the hammer head 308 is able to perform an impact test on the test pipe, avoiding the tedious operation of the operator manually lifting the hammer head 308, improving the convenience and efficiency of the operation. At the same time, the falling of the hammer head 308 does not require the reverse rotation of the winding motor 301, and the rotation speed of the winding motor 301 will not affect the normal falling of the hammer head 308, preventing the hammer head 308 from getting stuck or rubbing during the release process, and ensuring that the winding sleeve 305 can smoothly rotate in the opposite direction when the hammer head 308 falls, so that the hammer head 308 can smoothly perform the impact test in an unobstructed state, which helps to maintain the consistency and repeatability of each impact test.

[0036] The adjusting motor 402 drives the adjusting screw 403 to rotate, and then adjusts the longitudinal position of the lifting block 404, so that the testing machine can adapt to the testing requirements of pipes of different sizes. In the process of lifting the hammer head 308, the vertical cylinder 408 and the limit block 409 move upward, and the limit block 409 lifts the limit hook 405, causing the limit hook 405 to rotate to both sides. The limit block 409 moves to the top of the limit hook 405, and the adjusting cylinder 406 pushes the limit frame 407 to reset the limit hook 405, thereby limiting the height of the hammer head 308 and ensuring that the hammer head 308 can be lifted to the same height each time, thereby ensuring the repeatability and consistency of the impact test. When a drop hammer impact is required, the adjusting cylinder 406 pulls the limit frame 407 to release the hammer head 308, reducing the risk of accidental collision or misoperation and reducing the potential danger during equipment operation.

[0037] In addition, the side wall of the frame 1 is provided with an auxiliary falling component 5, which includes a guide rail 501, a movable block 502, a counterweight 503, and a limiting ball 504. The guide rail 501 is fixedly connected to the bottom end face of the mounting frame 401, and the side wall of the mounting frame 401 is slidably connected to the movable block 502. The bottom of the movable block 502 is fixedly connected to the counterweight 503. The movable block 502 is socketed with the connecting rope 307. After the hammer head 308 is released, since the counterweight 503 is lower than the hammer head 308, the counterweight 503 pulls the connecting rope 307, further reducing the resistance caused by the hammer head 308 directly pulling the connecting rope 307. The counterweight 503 assists in pulling the connecting rope 307, keeping the speed of the hammer head 308 stable during the entire falling process, avoiding the uneven speed caused by rope friction or other factors, ensuring the energy consistency of each impact, and thereby improving the repeatability and reliability of the test results.

[0038] In the present invention, when in use, the winding motor 301 rotates forward, and the limiting trapezoidal block 303 limits the toggle plate 304, so that the toggle plate 304 pushes the limiting triangular block 306, thereby driving the winding sleeve 305 to rotate forward, so that the winding sleeve 305 reels the connecting rope 307, and lifts the hammer head 308 to a high position. When the winding motor 301 stops rotating, the hammer head 308 pulls the connecting rope 307 downward, the winding sleeve 305 rotates in the opposite direction, and the hammer head 308 performs an impact test on the test pipe.

[0039] The above generally describes the present invention in detail. However, it is obvious to those skilled in the art that modifications or improvements may be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A drop weight impact testing machine for plastic pipes, comprising a frame (1), wherein a clamping block (2) is fixedly connected to the inner bottom surface of the frame (1), and characterized in that: An impact test device is provided inside the frame (1), and the impact test device comprises: A drop hammer assembly (3), the drop hammer assembly (3) is arranged on the inner top surface of the frame (1), the drop hammer assembly (3) includes a winding motor (301), the winding motor (301) is fixedly connected to the inner top surface of the frame (1), the output end of the winding motor (301) is fixedly connected to a rotating shaft (302), the side wall of the rotating shaft (302) is fixedly connected to a limited trapezoidal block (303), and the outer wall of the rotating shaft (302) is hinged with a toggle plate (304); A winding sleeve (305) is sleeved on the outer wall of the rotating shaft (302), the inner wall of the winding sleeve (305) is fixedly connected to a limiting triangular block (306), a connecting rope (307) is wound around the outer wall of the winding sleeve (305), and the end face of the connecting rope (307) is fixedly connected to a hammer head (308); A limit assembly (4), wherein the limit assembly (4) is arranged on the side wall of the frame (1), and the limit assembly (4) includes a mounting frame (401), wherein the mounting frame (401) is fixedly connected to the side wall of the frame (1), the top end surface of the mounting frame (401) is fixedly connected to an adjusting motor (402), the output end of the adjusting motor (402) is fixedly connected to an adjusting screw (403), the side wall of the adjusting screw (403) is threadedly connected to a lifting block (404), and the inner wall of the lifting block (404) is hingedly connected to a limit hook (405); An adjusting cylinder (406), wherein the adjusting cylinder (406) is fixedly connected to a side wall of the mounting frame (401), and an output end of the adjusting cylinder (406) is fixedly connected to a limiting frame (407); A vertical cylinder (408) is fixedly connected to the top end surface of the hammer head (308), and the outer wall of the vertical cylinder (408) is fixedly connected to a limiting block (409).

2. A plastic pipe drop weight impact testing machine according to claim 1, characterized in that: The top end surface of the mounting frame (401) is fixedly connected to a vertical rod (410), and the side wall of the vertical rod (410) is sleeved with the lifting block (404).

3. The plastic pipe drop weight impact testing machine according to claim 1, characterized in that: A vertical slot (411) is provided on the side wall of the vertical cylinder (408), the connecting rope (307) passes through the vertical cylinder (408), and the connecting rope (307) is fixedly connected to the side wall of the hammer head (308) through the vertical slot (411).

4. The plastic pipe drop weight impact testing machine according to claim 1, characterized in that: The side of the limiting frame (407) close to the limiting hook (405) is set to be trapezoidal, and the upper bottom of the trapezoid is movably connected to the bottom surface of the limiting hook (405).

5. The plastic pipe drop weight impact testing machine according to claim 1, characterized in that: The side wall of the frame (1) is provided with an auxiliary falling component (5), and the auxiliary falling component (5) includes a guide rail (501), and the guide rail (501) is fixedly connected to the bottom end surface of the mounting frame (401). The side wall of the mounting frame (401) is slidably connected to a movable block (502), and the bottom of the movable block (502) is fixedly connected to a counterweight block (503), and the movable block (502) is sleeved with a connecting rope (307).

6. The plastic pipe drop weight impact testing machine according to claim 1, characterized in that: The side wall of the connecting rope (307) is fixedly connected to a limiting ball (504), and the diameter of the limiting ball (504) is larger than the diameter of the vertical groove (411).

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