Impact resistance detection equipment for power tube

Abstract

The utility model provides an electric power pipe impact resistance detection device, which comprises a workbench, a support frame, two guide pipes, a falling frame and a lifting frame, the workbench is installed on the ground, the support frame is installed on the upper end surface of the workbench, the lower ends of the two guide pipes are installed on the upper end surface of the support frame, and the upper ends of the guide pipes are connected with each other through a connecting plate; the two sides of the falling frame are slidably connected with the guide pipes, and an iron block is arranged on the upper portion of the falling frame. The two sides of the lifting frame are slidably connected with the guide pipes through sleeves, and an electromagnet is arranged on the lower portion of the lifting frame. A lifting motor is arranged on the workbench and connected with the lifting frame through a steel wire rope. The lifting height of the lifting frame is limited by arranging the second limiting block on the steel wire rope, and the power supply of the electromagnet is cut off through the elastic switch assembly, so that the falling frame is released after rising to a preset height, and falls to impact the to-be-tested power tube, thereby achieving the purpose of simulating impact.

Description

Technical Field

[0001] The present application relates to the technical field of plastic pipe quality inspection, and in particular to an anti-impact inspection device for electric power pipes. Background Art

[0002] The power pipe is a commonly used plastic pipe. In the field of construction, it is often embedded in the wall to facilitate the passage of wires. The power pipe embedded in the wall will be squeezed under the action of concrete coagulation. In addition, when pouring concrete, workers use vibrators to vibrate the concrete. The power pipe also needs to be able to resist the impact of the vibrator to avoid the vibration rod causing the power pipe to break. At the same time, the cost of replacing the power pipe after it is embedded is high, so the impact resistance test of the power pipe is an important test. At present, enterprises often use the drop hammer impact test, which is to release the drop hammer after raising it to a certain height, and then hit the power pipe below after the gravity accelerates the drop hammer to achieve the effect of simulating the impact. For example, the Chinese patent with application number 202220163687.0 discloses a plastic pipe impact tester, which releases the drop hammer through the release mechanism, and under the guidance of the slide bar, the drop hammer accurately hits the pipe to be tested. However, the device needs to manually raise the drop hammer, which will increase the labor intensity of the test personnel for some heavier drop hammers. For example, a Chinese patent with application number 202021485604.7 discloses a PVC pipe drop hammer impact test device. The device is equipped with a drive motor that can be used to raise the drop hammer. However, the height of the fixed frame of the device is fixed, and the release height of the drop hammer cannot be adjusted. After the cylinder releases the impact hammer, the reel rope will still remain connected, which can easily affect the falling speed of the impact hammer and affect the test results. Utility Model Content

[0003] In order to solve the above problems, the present application proposes an anti-impact detection device for electric pipes to solve the problem that the height of the drop hammer in the prior art cannot be adjusted and the rope is still connected when the drop hammer is released.

[0004] This application is implemented through the following technical solutions:

[0005] The present application proposes an anti-impact testing device for electric pipes, comprising: a workbench, a support frame, a guide tube, a landing gear, and a lifting frame. The workbench is installed on the ground, and the support frame is installed on the upper end surface of the workbench. There are two guide tubes, and the lower ends of the guide tubes are installed on the upper end surface of the support frame, and the upper ends of the guide tubes are connected to each other through connecting plates; the two sides of the landing gear are slidably connected to the guide tubes, and an iron block is provided on the upper part of the landing gear; the two sides of the lifting frame are slidably connected to the guide tubes through sleeves, and an electromagnet is provided at the lower part of the lifting frame; a lifting motor is provided on the workbench, and the lifting motor is connected to the lifting frame through a wire rope.

[0006] Furthermore, a limit frame is provided on the upper part of the guide tube, a first roller and a second roller are provided on the connecting plate, the steel wire rope passes through the first roller and the second roller in sequence and then passes through the limit frame, and a second limit block is provided on the steel wire rope.

[0007] Furthermore, an elastic switch assembly is provided on the connecting plate, and the elastic switch assembly includes an outer square tube, a square column, and a roller. The square column is inserted into the outer square tube, and a spring is provided between the square column and the bottom of the outer square tube. A micro switch is provided at the bottom of the outer square tube, and the roller is installed at the upper end of the square column, and the upper end of the roller is 5 cm to 10 cm higher than the upper ends of the first roller and the second roller.

[0008] Furthermore, a guide groove is provided on the tube wall of the guide tube, both sides of the landing gear extend into the guide groove, and first limit blocks are provided on both sides of the landing gear.

[0009] Furthermore, the landing gear is provided with a screw rod and a nut, and a counterweight block is mounted on the screw rod.

[0010] Furthermore, a fixing frame is provided on the workbench, and the fixing frame is used to fix the power tube to be tested.

[0011] The beneficial effects of the present application are as follows: a second limit block is set on the wire rope to limit the lifting height of the lifting frame, and the power supply of the electromagnet is disconnected by the elastic switch assembly, so that the landing frame is released after rising to a predetermined height, and then falls and hits the power pipe to be tested, thereby achieving the purpose of simulating impact. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 It is a structural schematic diagram of the elastic switch assembly;

[0014] Figure 3 It is a schematic diagram of the structure of the landing gear and the lifting frame;

[0015] In the figure: 1-workbench, 2-support frame, 3-guide tube, 4-dropping frame, 5-lifting frame, 6-first limit block, 7-iron block, 8-connecting plate, 9-sleeve, 10-electromagnet, 11-lifting motor, 12-wire rope, 13-limiting frame, 14-first roller, 15-second roller, 16-second limit block, 17-outer square tube, 18-square column, 19-third roller, 20-spring, 21-micro switch, 22-counterweight, 23-fixed frame. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. Obviously, the described embodiments are only a part of the embodiments of the utility model, not all of them. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0017] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0018] In addition, the descriptions of "first", "second", etc. in this application are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0019] like Figures 1 to 3 As shown, an embodiment of the utility model provides an anti-impact detection device for electric pipes, including: a workbench 1, a support frame 2, a guide tube 3, a landing gear 4, and a lifting frame 5. The workbench 1 is installed on the ground, the support frame 2 is installed on the upper end surface of the workbench 1, there are two guide tubes 3, the lower ends of the guide tubes 3 are installed on the upper end surface of the support frame 2, and the upper ends of the guide tubes 3 are connected to each other through connecting plates 8; the two sides of the landing gear 4 are slidably connected to the guide tubes 3, and the upper part of the landing gear 4 is provided with an iron block 7; the two sides of the lifting frame 5 are slidably connected to the guide tubes 3 through sleeves 9, and the lower part of the lifting frame 5 is provided with an electromagnet 10; a lifting motor 11 is provided on the workbench 1, and the lifting motor 11 is connected to the lifting frame 5 through a wire rope 12.

[0020] During the inspection, the electric tube to be tested is placed on the fixing frame 23, and the electric tube is fixed by the clamping block, and then the lifting motor 11 is controlled to make the lifting frame 5 descend, the lifting frame 5 contacts the landing frame 4 and absorbs the iron block 7 through the electromagnet 10, and then the wire rope 12 is pulled by the lifting motor 11, so that the lifting frame 5 is connected to the landing frame 4 to rise. Since the wire rope 12 is provided with a second limit block 16, when the second limit block 16 is blocked by the limit frame 13, the tension on the wire rope 12 increases. At this time, the pressure on the square column 18 increases, thereby overcoming the elastic force of the spring 20 and sliding. When the square column 18 contacts the microswitch 21, the controller receives a conduction signal, thereby stopping the operation of the lifting motor 11. At this time, it can be released manually or automatically. When released, the power supply of the electromagnet 10 is disconnected. At this time, the electromagnet 10 loses its magnetic force, and the landing frame 4 slides vertically along the guide tube 3 under the action of gravity and hits the electric tube to be tested, thereby achieving the purpose of simulating impact, thereby detecting the impact resistance of the electric tube. After release, the lifting motor 11 controls the lifting frame 5 to descend again, and pulls up the landing gear 4 again to carry out the next set of experiments. The tester can adjust the release position of the landing gear 4 by adjusting the position of the second limit block 16 on the wire rope 12, thereby controlling the falling height of the landing gear 4. At the same time, the counterweight block 22 can be fixed on the landing gear 4 by a screw and a nut, thereby adjusting the total mass of the landing gear 4, so as to simulate impact forces of different strengths.

[0021] This device can also be used for impact resistance testing of other pipes, but the impact resistance requirements of other pipes are not high, and the detection frequency is lower than that of power pipes. Other pipes are mainly tested for the impact resistance of 1kg at a height of 1m, while power pipes have a drop weight of 1kg, 2kg, and 5kg, and a drop height of 1m, 2m, etc. The impact resistance requirements are higher than other pipes, and the company will also increase the drop distance of 10cm on the basis of the national standard to improve the detection standard. This device can well meet the impact resistance tests with different requirements and meet the impact resistance detection needs of different power pipes.

[0022] In a specific embodiment, a limit frame 13 is provided on the upper part of the guide tube 3, and the second limit block 16 on the wire rope 12 is limited by the limit frame 13, so that the lifting frame 5 can press the square column 18 to turn on the micro switch 21 after rising to a predetermined height. The connecting plate 8 is provided with a first roller 14 and a second roller 15, and the direction of the wire rope 12 is changed by the rollers. The wire rope 12 passes through the first roller 14 and the second roller 15 in sequence and then passes through the limit frame 13. The wire rope 12 is provided with a second limit block 16.

[0023] In a preferred embodiment, Figure 2As shown, an elastic switch assembly is provided on the connecting plate 8, and the elastic switch assembly includes an outer square tube 17, a square column 18, and a third roller 19. The square column 18 is inserted into the outer square tube 17, and a spring 20 is provided between the square column 18 and the bottom of the outer square tube 17, and a micro switch 21 is provided at the bottom of the outer square tube 17. The third roller 19 is installed on the upper end of the square column 18, and the upper end of the third roller 19 is 5 cm to 10 cm higher than the upper ends of the first roller 14 and the second roller 15. When the lifting frame 5 rises to a predetermined height, the second limit block 16 abuts against the limit frame 13. At this time, the wire rope 12 is limited. If the lifting motor 11 continues to pull, the force acting on the third roller 19 and the square column 18 will be increased, thereby overcoming the elastic force of the spring 20, causing the square column 18 to slide inward, thereby pressing the micro switch 21. After the micro switch 21 is turned on, the controller receives a turn-on signal, thereby stopping the rotation of the lifting motor 11.

[0024] In a preferred embodiment, a guide groove is provided on the tube wall of the guide tube 3, and both sides of the drop frame 4 extend into the guide groove, and first limit blocks 6 are provided on both sides of the drop frame 4 to guide the drop frame 4 so that it can accurately impact the power tube to be tested.

[0025] Preferably, a screw and a nut are provided on the landing gear 4, and a counterweight 22 is mounted on the screw. The total mass of the landing gear 4 can be adjusted by replacing the counterweight 22 to simulate different impact forces.

[0026] In a specific embodiment, a fixing frame 23 is provided on the workbench 1 , and the fixing frame 23 is used to fix the power tube to be tested to ensure that the power tube is kept directly below the drop frame 4 during testing.

[0027] Of course, the present application may have many other implementations. Based on the present implementation, other implementations obtained by ordinary technicians in this field without any creative work are all within the scope of protection of the present application.

Claims

1. A power pipe impact resistance detection device, characterized in that: include: A workbench (1), a support frame (2), a guide tube (3), a landing gear (4), and a lifting frame (5), wherein the workbench (1) is installed on the ground, the support frame (2) is installed on the upper end surface of the workbench (1), there are two guide tubes (3), the lower ends of the guide tubes (3) are installed on the upper end surface of the support frame (2), and the upper ends of the guide tubes (3) are connected to each other through a connecting plate (8); both sides of the landing gear (4) are slidably connected to the guide tubes (3), and an iron block (7) is provided on the upper part of the landing gear (4); both sides of the lifting frame (5) are slidably connected to the guide tubes (3) through sleeves (9), and an electromagnet (10) is provided on the lower part of the lifting frame (5); a lifting motor (11) is provided on the workbench (1), and the lifting motor (11) is connected to the lifting frame (5) through a steel wire rope (12).

2. The power tube impact resistance detection device according to claim 1 is characterized in that: A limiting frame (13) is provided on the upper part of the guide tube (3), a first roller (14) and a second roller (15) are provided on the connecting plate (8), the steel wire rope (12) passes through the limiting frame (13) after passing through the first roller (14) and the second roller (15) in sequence, and a second limiting block (16) is provided on the steel wire rope (12).

3. The power tube impact resistance detection device according to claim 2 is characterized in that: The connecting plate (8) is provided with an elastic switch assembly, which comprises an outer square tube (17), a square column (18), and a third roller (19). The square column (18) is inserted into the outer square tube (17), and a spring (20) is provided between the square column (18) and the bottom of the outer square tube (17). A micro switch (21) is provided at the bottom of the outer square tube (17). The third roller (19) is mounted on the upper end of the square column (18), and the upper end of the third roller (19) is 5 cm to 10 cm higher than the upper ends of the first roller (14) and the second roller (15).

4. The power tube impact resistance detection device according to claim 1 is characterized in that: A guide groove is provided on the tube wall of the guide tube (3), both sides of the drop frame (4) extend into the guide groove, and first limit blocks (6) are provided on both sides of the drop frame (4).

5. The power tube impact resistance detection device according to claim 1 is characterized in that: The landing gear (4) is provided with a screw rod and a nut, and a counterweight block (22) is sleeved on the screw rod.

6. The power tube impact resistance detection device according to claim 1 is characterized in that: The workbench (1) is provided with a fixing frame (23), and the fixing frame (23) is used to fix the power tube to be tested.

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