A testing device for the bonding strength of steel-plastic composite pipes

Abstract

This utility model relates to the field of steel pipe testing technology, specifically a testing device for the steel-plastic composite pipe bonding strength. It includes a base, a connecting frame, a movable beam, and a mold. The connecting frame is fixedly connected to the upper surface of the base, and the movable beam is slidably connected inside the connecting frame. The mold is placed on the upper surface of the base. A protective device is fixedly installed on the outer surface of the connecting frame. The protective device includes a protective cover and a rotating block. The rotating block is fixedly connected to the outer surface of the connecting frame, and the protective cover is rotatably connected inside the rotating block. A sliding rod is fixedly connected to the upper end of the connecting frame, and a connecting arm is slidably connected to the surface of the sliding rod. This utility model's protective device effectively limits the protective cover through a plate, isolating the equipment testing area from the user. It can effectively block fragments generated when the steel-plastic composite pipe breaks during testing, protecting the user's safety and improving the equipment's safety.

Description

Technical Field

[0001] This utility model relates to the field of steel pipe testing technology, and in particular to a device for testing the bonding strength of steel-plastic composite pipes. Background Technology

[0002] Steel-plastic composite pipe is a type of pipe that combines the advantages of steel pipe and plastic pipe. It is made by coating a plastic layer on the inner wall or both the inner and outer walls of a steel pipe as the base. After production, it is necessary to test the bonding strength between the plastic and the steel pipe to observe whether the steel-plastic composite pipe meets the standards. Therefore, a steel-plastic composite pipe bonding strength testing device is used to test the bonding strength between the plastic and the steel pipe.

[0003] Existing technologies, such as patent CN221860144U, disclose a steel pipe pressure testing device with a steel grid structure. This patent uses a universal testing machine, on which a mounting base is fixed. Two opposing clamping blocks are slidably connected to the mounting base and fix it to the base. The clamping blocks are detachably fixed to the mounting base through connecting components. The two ends of the base away from the mounting base are connected to the steel pipe sample to be tested through support components. This steel grid structure steel pipe pressure testing device, according to this utility model, solves the problem that in existing equipment, the pipe is easily detached from the base during use, causing the equipment to fail the test.

[0004] During routine operation, when the equipment is testing steel-plastic composite pipes, excessive pressure can easily crush the pipes, causing fragments to fly everywhere and potentially injure users. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies that easily damage steel-plastic composite pipes during testing, with broken fragments potentially injuring users. Therefore, this invention proposes a steel-plastic bonding strength testing device for steel-plastic composite pipes.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a steel-plastic composite pipe steel-plastic bonding force testing device, comprising a base, a connecting frame, a movable beam, and a mold. The connecting frame is fixedly connected to the upper surface of the base, the movable beam is slidably connected inside the connecting frame, the mold is placed on the upper surface of the base, and a protective device is fixedly provided on the outer surface of the connecting frame. The protective device includes a protective cover and a rotating block. The rotating block is fixedly connected to the outer surface of the connecting frame, the protective cover is rotatably connected inside the rotating block, a sliding rod is fixedly connected to the upper end of the connecting frame, a connecting arm is slidably connected to the surface of the sliding rod, a connecting block is fixedly connected to the end of the connecting arm near the protective cover, and an insert plate is fixedly connected to the lower surface of the connecting block.

[0007] Furthermore, the insert plate is inserted and connected to the surface of the protective cover, and the upper end of the slide rod is fixedly connected to a connecting plate. By setting up the protective cover, the detection area can be isolated from the user, reducing the possibility that fragments of the crushed material may strike the user and cause injury during use.

[0008] Furthermore, a first spring is sleeved and connected to the surface of the slide rod.

[0009] Furthermore, one end of the first spring is fixedly connected to the upper surface of the connecting arm, and the end of the first spring away from the connecting arm is fixedly connected to the lower surface of the connecting plate. The first spring is provided to facilitate the application of a restoring force to the connecting arm.

[0010] Furthermore, an auxiliary component is fixedly provided on the outer surface of the connecting frame. The auxiliary component includes a stop bar and a fixing block. The fixing block is fixedly connected to the outer surface of the connecting frame. The stop bar abuts against the surface of the protective cover. A movable rod is fixedly connected to the lower surface of the stop bar. The movable rod is slidably connected inside the fixing block. A limit block is fixedly connected to the lower end of the movable rod. By setting the stop bar, the protective cover can be blocked after it is opened, reducing the impact of the protective cover with the connecting frame under the action of inertia, which could cause damage to the protective cover.

[0011] Furthermore, a second spring is sleeved and connected to the surface of the movable rod.

[0012] Furthermore, one end of the second spring is fixedly connected to the surface of the fixed block, and the other end of the second spring away from the fixed block is fixedly connected to the lower surface of the stop bar. The second spring is provided to facilitate the application of a restoring force to the stop bar.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows: In this invention, by setting up a protective device, when the equipment is testing a steel pipe, the user moves the connecting arm upwards, causing the insert plate at the lower end of the connecting block to move. When the connecting arm moves, it abuts against the first spring, compressing it to generate elastic force, which then closes the protective cover and the surface of the connecting frame. Then, the restraint of the connecting arm is released, and the first spring returns to its original position, causing the connecting arm to insert and connect the insert plate at the lower end of the connecting block to the surface of the protective cover. This protective device effectively limits the protective cover through the insert plate, isolating the equipment testing area from the user. It can effectively block the fragments generated when the steel-plastic composite pipe breaks during testing, protecting the user's safety and improving the safety of the equipment.

[0014] In this invention, by setting an auxiliary component, when the user closes the protective cover, the user moves the stop bar downwards, causing the moving rod to move inside the fixed block. The stop bar then compresses the second spring, generating elastic force, and the stop bar disengages from the protective cover to close it. By setting the auxiliary component, the open protective cover is effectively blocked, thus limiting its movement and reducing the likelihood of damage from accidental rotation and impacts to the connecting frame surface that occurs with existing equipment. This auxiliary component, through the cooperation of the stop bar, moving rod, and second spring, provides limiting protection for the opened protective cover, improving its stability. Attached Figure Description

[0015] Figure 1 This utility model provides a three-dimensional structural schematic diagram of a steel-plastic composite pipe steel-plastic bonding force testing device; Figure 2 This utility model provides a schematic diagram of the internal structure of a steel-plastic composite pipe steel-plastic bonding force testing device; Figure 3 This utility model proposes a testing device for the steel-plastic bonding strength of steel-plastic composite pipes. Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 This utility model proposes a testing device for the steel-plastic bonding strength of steel-plastic composite pipes. Figure 2 Enlarged structural diagram at point B; Figure 5 This utility model proposes a testing device for the steel-plastic bonding strength of steel-plastic composite pipes. Figure 2 Enlarged structural diagram at point C.

[0016] Legend: 1. Base; 2. Connecting frame; 3. Moving beam; 4. Mold; 5. Protective device; 51. Protective cover; 52. Connecting block; 53. Insert plate; 54. Connecting arm; 55. Slide rod; 56. Connecting plate; 57. First spring; 58. Rotating block; 6. Auxiliary component; 61. Stop bar; 62. Fixing block; 63. Limiting block; 64. Moving rod; 65. Second spring. Detailed Implementation

[0017] Please see Figures 1-5 This utility model provides a technical solution: a steel-plastic composite pipe steel-plastic bonding force testing device, including a base 1, a connecting frame 2, a moving beam 3 and a mold 4. The connecting frame 2 is fixedly connected to the upper surface of the base 1, the moving beam 3 is slidably connected inside the connecting frame 2, and the mold 4 is placed on the upper surface of the base 1.

[0018] The specific settings and functions of its protective device 5 and auxiliary components 6 will be discussed below.

[0019] In this embodiment: a protective device 5 is fixedly installed on the outer surface of the connecting frame 2. The protective device 5 includes a protective cover 51 and a rotating block 58. The rotating block 58 is fixedly connected to the outer surface of the connecting frame 2. The protective cover 51 is rotatably connected inside the rotating block 58. A sliding rod 55 is fixedly connected to the upper end of the connecting frame 2. A connecting arm 54 is slidably connected to the surface of the sliding rod 55. A connecting block 52 is fixedly connected to the end of the connecting arm 54 near the protective cover 51. An insert plate 53 is fixedly connected to the lower surface of the connecting block 52.

[0020] Specifically, the insert plate 53 is inserted and connected to the surface of the protective cover 51, and the upper end of the slide rod 55 is fixedly connected to the connecting plate 56.

[0021] In this embodiment, by setting up a protective cover 51, the detection area can be isolated from the user, reducing the possibility that fragments of the broken material could easily strike the user and cause injury during use.

[0022] Specifically, a first spring 57 is sleeved and connected to the surface of the slide rod 55.

[0023] Specifically, one end of the first spring 57 is fixedly connected to the upper surface of the connecting arm 54, and the other end of the first spring 57 away from the connecting arm 54 is fixedly connected to the lower surface of the connecting plate 56. The first spring 57 is provided to facilitate the application of a restoring force to the connecting arm 54.

[0024] In this embodiment: an auxiliary component 6 is fixedly installed on the outer surface of the connecting frame 2. The auxiliary component 6 includes a stop bar 61 and a fixing block 62. The fixing block 62 is fixedly connected to the outer surface of the connecting frame 2. The stop bar 61 abuts against the surface of the protective cover 51. A movable rod 64 is fixedly connected to the lower surface of the stop bar 61. The movable rod 64 is slidably connected inside the fixing block 62. A limit block 63 is fixedly connected to the lower end of the movable rod 64.

[0025] In this embodiment: by setting a stop bar, the protective cover 51 can be blocked after it is opened, reducing the possibility of the protective cover 51 colliding with the connecting frame 2 under the action of inertia and causing damage to the protective cover 51.

[0026] Specifically, a second spring 65 is sleeved and connected to the surface of the moving rod 64.

[0027] Specifically, one end of the second spring 65 is fixedly connected to the surface of the fixing block 62, and the other end of the second spring 65 away from the fixing block 62 is fixedly connected to the lower surface of the stop rod 61. The second spring 65 is provided to facilitate the application of a restoring force to the stop rod 61.

[0028] Working principle: When the equipment is inspecting the steel pipe, the user moves the connecting arm 54 upward, causing the insert plate 53 at the lower end of the connecting block 52 to move. When the connecting arm 54 moves, it abuts against the first spring 57 to compress and generate elastic force, which closes the protective cover 51 and the surface of the connecting frame 2. Then, the binding of the connecting arm 54 is released, and the first spring 57 returns to its original position, causing the connecting arm 54 to insert and connect the insert plate 53 at the lower end of the connecting block 52 to the surface of the protective cover 51. This protective device 5 effectively limits the protective cover 51 through the insert plate 53, isolating the equipment inspection area from the user. It can effectively block the fragments generated when the steel-plastic composite pipe breaks during inspection, protecting the user's safety and improving the safety of the equipment.

[0029] When the user closes the protective cover 51, the user moves the stop lever 61 downwards, causing the moving lever 64 to move inside the fixed block 62. Then, the stop lever 61 compresses the second spring 65 to generate elastic force, and then the stop lever 61 disengages from the protective cover 51 to close it. By setting the auxiliary component 6, the open protective cover 51 is effectively blocked, which plays a role in limiting the opening of the protective cover 51. This reduces the possibility of the open protective cover 51 rotating randomly and being damaged by collision with the surface of the connecting frame 2 in the existing equipment. This auxiliary component 6, through the cooperation between the stop lever 61, the moving lever 64 and the second spring 65, can limit and protect the open protective cover 51, thereby improving the stability of the protective cover 51.

Claims

1. A steel-plastic composite pipe steel-plastic bonding force testing device, comprising a base (1), a connecting frame (2), a moving beam (3), and a mold (4), characterized in that: The connecting frame (2) is fixedly connected to the upper surface of the base (1). The moving beam (3) is slidably connected inside the connecting frame (2). The mold (4) is placed on the upper surface of the base (1). A protective device (5) is fixedly installed on the outer surface of the connecting frame (2). The protective device (5) includes a protective cover (51) and a rotating block (58). The rotating block (58) is fixedly connected to the outer surface of the connecting frame (2). The protective cover (51) is rotatably connected inside the rotating block (58). A sliding rod (55) is fixedly connected to the upper end of the connecting frame (2). A connecting arm (54) is slidably connected to the surface of the sliding rod (55). A connecting block (52) is fixedly connected to one end of the connecting arm (54) near the protective cover (51). A plug plate (53) is fixedly connected to the lower surface of the connecting block (52).

2. The steel-plastic composite pipe bonding strength testing device according to claim 1, characterized in that: The insert plate (53) is inserted and connected to the surface of the protective cover (51), and the upper end of the slide rod (55) is fixedly connected to the connecting plate (56).

3. The steel-plastic composite pipe bonding strength testing device according to claim 2, characterized in that: The surface of the slide bar (55) is fitted with a first spring (57).

4. The steel-plastic composite pipe bonding strength testing device according to claim 3, characterized in that: One end of the first spring (57) is fixedly connected to the upper surface of the connecting arm (54), and the other end of the first spring (57) away from the connecting arm (54) is fixedly connected to the lower surface of the connecting plate (56).

5. The steel-plastic composite pipe bonding strength testing device according to claim 1, characterized in that: An auxiliary component (6) is fixedly provided on the outer surface of the connecting frame (2). The auxiliary component (6) includes a stop bar (61) and a fixing block (62). The fixing block (62) is fixedly connected to the outer surface of the connecting frame (2). The stop bar (61) abuts against the surface of the protective cover (51). A moving rod (64) is fixedly connected to the lower surface of the stop bar (61). The moving rod (64) is slidably connected inside the fixing block (62). A limit block (63) is fixedly connected to the lower end of the moving rod (64).

6. The steel-plastic composite pipe bonding strength testing device according to claim 5, characterized in that: A second spring (65) is sleeved on the surface of the moving rod (64).

7. The steel-plastic composite pipe bonding strength testing device according to claim 6, characterized in that: One end of the second spring (65) is fixedly connected to the surface of the fixed block (62), and the other end of the second spring (65) away from the fixed block (62) is fixedly connected to the lower surface of the stop bar (61).

Images