Tension testing machine for composite post insulator

Abstract

The utility model discloses a tension testing machine for a composite post insulator, which belongs to the technical field of insulator detection and specifically comprises a base and a testing frame, the testing frame is fixedly connected above the base, the base is fixedly connected with a base, and a top seat is arranged above the base; an upper pulling block is vertically and slidably connected to the upper portion of the top seat, a tension detector is fixedly connected to the bottom of the upper pulling block, and the other end of the tension detector is fixedly connected with the top seat; according to the utility model, through the arrangement of the upper pulling block and the pulling force detection sensor, the pulling force test can be carried out on the insulator body fixed on the pedestal, and the pulling force test mode of the whole insulator body string is changed into the pulling force test mode of a single insulator body. The tension test on the composite insulator body is simple and easy, and the accuracy of the tension test on the insulator body is improved.

Description

Technical Field

[0001] This utility model belongs to the field of insulator testing technology, specifically relating to a tensile testing machine for composite post insulators. Background Technology

[0002] Composite insulators are a special type of insulating control, currently widely used in overhead transmission lines. They function to support the conductors and prevent current from returning to the ground. They must not fail due to various electromechanical stresses caused by changes in environmental and electrical load conditions; otherwise, the insulator will not perform its significant function, thus compromising the service life and operational life of the entire line. Furthermore, there are specific requirements for the mechanical strength of composite insulators.

[0003] Chinese utility model patent application number 201721211973.5 discloses an insulator tensile testing machine. The insulator tensile testing machine includes an insulator to be tested, an insulator support base, insulator series connectors, an end fixing seat, and an end tensile testing seat. The end fixing seat and the end tensile testing seat are respectively located at both ends of the insulator support base. Multiple insulators are connected in series via the insulator series connectors. This utility model provides an insulator tensile testing machine for performing tensile tests on insulators. It allows for series tensile testing of multiple insulators at once, improving testing efficiency and production efficiency.

[0004] The aforementioned existing technology also has shortcomings: when using the method of connecting composite post insulators in series to conduct tensile tests on the composite post insulator string, if a problem occurs in a composite post insulator during the series test, it is difficult to determine whether the problem is with a single composite post insulator or with the entire composite post insulator string. The tensile test of composite post insulators is relatively complex and difficult, which reduces the accuracy of the tensile test of composite post insulators. Utility Model Content

[0005] To address the problems mentioned in the background section, this invention provides a tensile testing machine for composite post insulators. This machine employs a method of testing the tensile force of a single insulator body, making the testing simpler and easier, and improving the accuracy of the tensile force test on the insulator body.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a composite post insulator tensile testing machine, comprising a base and a test frame, wherein the test frame is fixedly connected above the base, a base is fixedly connected on the base, and a top seat is provided above the base, wherein the top seat and the base together constitute the fixing structure of the insulator body;

[0007] A pull block is vertically slidably connected above the top seat, and a tension detector is fixedly connected to the bottom of the pull block. The other end of the tension detector is fixedly connected to the top seat. The tension detector and the pull block work together to form a test structure for the tension of the insulator body.

[0008] Preferably, the test frame includes a top plate and two side plates, with the side plates fixedly connected to both sides of the top plate, and the other end of each side plate fixedly connected to a base.

[0009] Preferably, it also includes an upward pulling mechanism for driving the upward pulling block to move. The upward pulling mechanism includes a fixed cylinder and a movable cylinder. The fixed cylinder is disposed on the top plate, and the movable cylinder is vertically slidably connected inside the fixed cylinder. The other end of the movable cylinder extends to the outside of the fixed cylinder and is fixedly connected to the upward pulling block.

[0010] Preferably, a geared motor is fixedly connected to the top plate, and a threaded rod is fixedly connected to the output shaft of the geared motor. The other end of the threaded rod extends into the movable cylinder and is threadedly connected to the movable cylinder. The threaded rod is rotatably connected to the top plate.

[0011] Preferably, a limiting block is fixedly connected to the outer side of one end of the movable cylinder inside the fixed cylinder, and the limiting block is slidably connected to the limiting groove provided on the inner wall of the fixed cylinder.

[0012] Preferably, a fixing plate is fixedly sleeved on the outer side of the fixing cylinder, and the fixing plate is detachably connected to the top plate.

[0013] Preferably, the pull-up block is provided with a positioning cavity, the top of the positioning cavity is provided with a first positioning hole penetrating the pull-up block, and the bottom of the positioning cavity is provided with a second positioning hole penetrating the pull-up block.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention, through the addition of an upper pull block and a tension detection sensor, enables tensile testing of the insulator body fixed on the base. It changes the method of testing the tensile force of the entire insulator string to testing the tensile force of a single insulator body, making the tensile testing of composite insulator bodies simpler and easier, and improving the accuracy of the tensile force test of the insulator body. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0018] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 3 This is a schematic cross-sectional view of the pull-up mechanism of this utility model;

[0020] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the middle;

[0021] In the diagram: 1. Base; 2. Test frame; 201. Top plate; 202. Side plate; 3. Base; 4. Top seat; 5. Pull-up block; 6. Tension detector; 7. Pull-up mechanism; 701. Fixed cylinder; 702. Moving cylinder; 703. Gear motor; 704. Threaded rod; 705. Limiting block; 706. Limiting groove; 707. Fixed plate; 8. Positioning cavity; 9. First positioning hole; 10. Second positioning hole. Detailed Implementation

[0022] 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. Example

[0023] Please see Figure 1-4 This embodiment provides the following technical solution: a composite post insulator tensile testing machine, including a base 1 and a test frame 2. The test frame 2 is fixedly connected to the top of the base 1. In some embodiments, the test frame 2 includes a top plate 201 and two side plates 202. The left and right sides of the top plate 201 are fixedly connected to the side plates 202, and the other end of the side plates 202 is fixedly connected to the base 1.

[0024] A base 3 is fixedly connected to the base 1, and a top seat 4 is provided above the base 3. The top seat 4 and the base 3 work together to form a fixing structure for the insulator body. In some embodiments, bolt holes are provided on both the base 3 and the top seat 4. The lower flange on the insulator body can be fixed to the base 3 and the upper flange on the insulator body can be fixed to the top seat 4 with the help of bolts. This increases the stability of the insulator body during tensile testing.

[0025] A pull block 5 is vertically slidably connected above the top seat 4. A tension detector 6 is fixedly connected to the bottom of the pull block 5. The other end of the tension detector 6 is fixedly connected to the top seat 4. The tension detector 6 and the pull block 5 work together to form a test structure for the tensile force of the insulator body. In some embodiments, the pull block 5 and the tension detection sensor can be used to perform tensile force tests on the insulator body fixed on the base 1. This changes the method of performing tensile force tests on the entire insulator string to performing tensile force tests on a single insulator body. The tensile force test on the composite insulator body is simpler and easier, and the accuracy of the tensile force test on the insulator body is improved.

[0026] It also includes an upward pulling mechanism 7 for driving the upward pulling block 5 to move. The upward pulling mechanism 7 includes a fixed cylinder 701 and a movable cylinder 702. The fixed cylinder 701 is disposed on the top plate 201. The movable cylinder 702 is vertically slidably connected inside the fixed cylinder 701. The other end of the movable cylinder 702 extends to the outside of the fixed cylinder 701 and is fixedly connected to the upward pulling block 5. In some embodiments, the movable cylinder 702 can slide vertically inside the fixed cylinder 701, and during the sliding of the movable cylinder 702, the upward pulling block 5 can be moved vertically, thereby applying an upward pulling force to the insulator body.

[0027] In some embodiments, a fixing plate 707 is fixedly sleeved on the outer side of the fixing cylinder 701. The fixing plate 707 is detachably connected to the top plate 201. The fixing plate 707 increases the stability of the fixing cylinder 701 on the top plate 201 and facilitates the assembly and disassembly of the fixing plate 707.

[0028] A geared motor 703 is fixedly connected to the top plate 201. A threaded rod 704 is fixedly connected to the output shaft of the geared motor 703. The other end of the threaded rod 704 extends into the movable cylinder 702 and is threadedly connected to the movable cylinder 702. The threaded rod 704 is rotatably connected to the top plate 201. A limit block 705 is also fixedly connected to the outer side of the movable cylinder 702 located inside the fixed cylinder 701. The limit block 705 is slidably connected to the inside of the limit groove 706 provided on the inner wall of the fixed cylinder 701.

[0029] In some embodiments, when in use, the geared motor 703 is started. During the process of the geared motor 703 driving the threaded rod 704 to rotate, the rotational motion of the threaded rod 704 is changed to vertical motion due to the limiting action of the limiting block 705 and the limiting groove 706, so that the moving cylinder 702 can slide vertically within the fixed cylinder 701.

[0030] The upper pull block 5 is provided with a positioning cavity 8, and the top of the positioning cavity 8 is provided with a first positioning hole 9 that penetrates the upper pull block 5. Through the first positioning hole 9, the upper pull block 5 can be fixed to the top of the movable cylinder 702 with bolts, and it is easy to install and remove the bolts from the upper pull block 5.

[0031] The bottom of the positioning cavity 8 is provided with a second positioning hole 10 that passes through the upper pull block 5. Through the second positioning hole 10, the tension detector 6 can be fixed on the upper pull block 5 with bolts, and it is easy to install and remove the bolts from the upper pull block 5.

[0032] The working principle of this utility model is as follows: In use, the lower flange on the insulator body is fixed to the base 3 in sequence with the help of bolts, and the upper flange on the insulator body is fixed to the top seat 4. After the fixing is completed, the reduction motor 703 is started, which makes the threaded rod 704 rotate. Under the limiting action of the limiting block 705 and the limiting groove 706, the threaded rod 704 rotates and drives the moving cylinder 702 to slide upward. While the moving cylinder 702 moves upward, the tension detector 6 detects the tension on the insulator body, and the detected signal is transmitted to the signal processing equipment. After the signal processing equipment processes the signal, the worker can observe the data detected by the tension detector 6 in real time.

[0033] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A tensile testing machine for composite post insulators, characterized in that: It includes a base (1) and a test frame (2). The test frame (2) is fixedly connected above the base (1). A base (3) is fixedly connected on the base (1). A top seat (4) is provided above the base (3). The top seat (4) and the base (3) work together to form the fixed structure of the insulator body. A pull block (5) is vertically slidably connected above the top seat (4), and a tension detector (6) is fixedly connected to the bottom of the pull block (5). The other end of the tension detector (6) is fixedly connected to the top seat (4). The tension detector (6) and the pull block (5) work together to form a test structure for the tension of the insulator body.

2. The composite post insulator tensile testing machine according to claim 1, characterized in that: The test frame (2) includes a top plate (201) and two side plates (202). The top plate (201) is fixedly connected to both sides of the side plates (202), and the other end of the side plates (202) is fixedly connected to the base (1).

3. The composite post insulator tensile testing machine according to claim 2, characterized in that: It also includes an upward pulling mechanism (7) for driving the upward pulling block (5) to move. The upward pulling mechanism (7) includes a fixed cylinder (701) and a movable cylinder (702). The fixed cylinder (701) is set on the top plate (201). The movable cylinder (702) is vertically slidably connected inside the fixed cylinder (701). The other end of the movable cylinder (702) extends to the outside of the fixed cylinder (701) and is fixedly connected to the upward pulling block (5).

4. The composite post insulator tensile testing machine according to claim 3, characterized in that: A geared motor (703) is fixedly connected to the top plate (201). A threaded rod (704) is fixedly connected to the output shaft of the geared motor (703). The other end of the threaded rod (704) extends into the movable cylinder (702) and is threadedly connected to the movable cylinder (702). The threaded rod (704) is rotatably connected to the top plate (201).

5. A tensile testing machine for composite post insulators according to claim 3, characterized in that: A limiting block (705) is also fixedly connected to the outer side of one end of the movable cylinder (702) inside the fixed cylinder (701). The limiting block (705) is slidably connected inside the limiting groove (706) provided on the inner wall of the fixed cylinder (701).

6. The composite post insulator tensile testing machine according to claim 3, characterized in that: The outer side of the fixed cylinder (701) is fixedly fitted with a fixed plate (707), which is detachably connected to the top plate (201).

7. A tensile testing machine for composite post insulators according to claim 1, characterized in that: The pull-up block (5) is provided with a positioning cavity (8), the top of the positioning cavity (8) is provided with a first positioning hole (9) penetrating the pull-up block (5), and the bottom of the positioning cavity (8) is provided with a second positioning hole (10) penetrating the pull-up block (5).

Images