Force measuring tool for permanent magnetic mechanism of ring main unit

Abstract

The utility model discloses a ring main unit permanent magnetic mechanism force measuring tool comprising a bottom plate, the bottom of the bottom plate is provided with a pedestal, four groups of fixing screw rods are arranged between the pedestal and the bottom plate, the surface of the pedestal is provided with a permanent magnetic mechanism body, the top of the bottom plate is movably provided with a lifting plate, and the lifting plate is provided with a fixing screw rod. A tension meter fixing plate is fixedly mounted at the top of the lifting plate, a dynamometer is fixedly mounted on the surface of the tension meter fixing plate, and a bottom drag hook of the dynamometer is detachably connected with the top of the permanent magnetic mechanism body; the surface of the bottom plate is provided with a driving mechanism for lifting the lifting plate and the dynamometer, the surface of the lifting plate is provided with two groups of positioning guide mechanisms for testing the residual holding force of the permanent magnetic mechanism body, and the residual holding force of the permanent magnetic mechanism body is measured, so that an actual measurement basis is provided for research and development design, and the residual holding force of the permanent magnetic mechanism body is measured; and whether the force value of the assembled permanent magnet meets the design requirement in the production process can be judged.

Description

TECHNICAL FIELD

[0001] The utility model relates to power equipment technical field, concretely is a kind of ring main unit permanent-magnet mechanism force measuring tool. BACKGROUND

[0002] Switchgear plays an important role in the power generation, transmission, distribution and energy conversion process of power system, and can start, control and protect electrical equipment. There are many types of switches, which can be divided into 12kV, 24kV, 35kV according to voltage level, and can be divided into circuit breaker cabinet, load switch cabinet and combined electrical apparatus cabinet according to function. The circuit breaker ring network cabinet is divided into spring operating mechanism and permanent magnet operating mechanism due to different operating mechanisms. The spring operating mechanism is widely used in power equipment ring network cabinet, and with the continuous improvement of power grid power supply reliability, the concept of permanent magnet ring network cabinet is proposed by Nanwang, that is, using permanent magnet as the operating mechanism of vacuum circuit breaker, and the switch body opening time is not more than 5ms. Due to the fast opening time of permanent magnet switch, each component in the switch action process must be strictly calculated, and after the product design meets the requirements, the quality control of raw materials and assembly process also has strict requirements.

[0003] The existing permanent magnet mechanism cannot measure the force value after assembly, and cannot determine whether the force value of permanent magnet, insulating rod and vacuum bubble after assembly is within the design requirement range, so we need to propose a ring network cabinet permanent magnet mechanism force measuring tool. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of ring network cabinet permanent magnet mechanism force measuring tool, through the setting of permanent magnet mechanism body, driving mechanism, positioning guide mechanism, lifting plate and dynamometer, to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A kind of ring network cabinet permanent magnet mechanism force measuring tool, including bottom plate, the bottom of the bottom plate is equipped with base, four groups of fixed screw rod are installed between the base and bottom plate, the surface of the base is equipped with permanent magnet mechanism body, the top of the bottom plate is movably installed lifting plate, the top of the lifting plate is fixedly installed tension meter fixed plate, the surface of the tension meter fixed plate is fixedly installed dynamometer, the bottom hook of the dynamometer is detachably connected with the top of the permanent magnet mechanism body;

[0007] The surface of the bottom plate is equipped with driving mechanism for lifting lifting plate and dynamometer, the surface of the lifting plate is equipped with two positioning guide mechanisms.

[0008] Preferably, the driving mechanism comprises two groups of fixing frames, operating frames are rotatably installed on opposite sides of the two groups of fixing frames, operating handles facilitating operation of a user are inserted into the top of the operating frames, abutting rods are installed above the two sides of the operating frames, support plates are fixedly installed on the two sides of the lifting plate, and the two groups of abutting rods are fixedly installed on one side of the two groups of support plates.

[0009] Preferably, rotating shafts are fixedly inserted into the two sides of the operating frame.

[0010] Preferably, the positioning guide mechanism comprises four groups of fixing sleeves, the four groups of fixing sleeves are fixedly installed on the bottom of the bottom plate, precise positioning guide rods are fixedly inserted into the interiors of two groups of the fixing sleeves, auxiliary positioning guide rods are fixedly inserted into the interiors of the other two groups of the fixing sleeves, and the top of the two groups of precise positioning guide rods and the top of the two groups of auxiliary positioning guide rods penetrate the lifting plate and are located above the lifting plate.

[0011] Preferably, limit sleeves are fixedly installed on the outer sides of the two groups of precise positioning guide rods, copper bushings are fixedly installed in the interiors of the limit sleeves, and the inner wall of the copper bushing is in sliding connection with the outer wall of the precise positioning guide rod.

[0012] Preferably, a through groove is formed in the middle of the bottom plate, and the bottom hook of the dynamometer penetrates the through groove and is connected with the top of the permanent magnet mechanism body.

[0013] Preferably, the four groups of fixing screws are symmetrically fixedly inserted into the two side lining plates of the bottom plate, and the bottom of the four groups of fixing screws is locked with the base through nuts.

[0014] Compared with the prior art, the utility model has the beneficial effects that:

[0015] The utility model is used for testing the residual holding force of the permanent magnet mechanism body, and through the measurement of the residual holding force of the permanent magnet mechanism body, actual measurement basis is provided for research and development design, and whether the force value after the permanent magnet assembly in the production process meets the design requirement. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the side view of the three-dimensional structure schematic diagram of the utility model;

[0017] Figure 2 It is the structure schematic diagram of the positioning guide mechanism and the driving mechanism of the utility model;

[0018] Figure 3 It is the structure schematic diagram of the bottom plate, the permanent magnet mechanism body and the fixing screw of the utility model;

[0019] Figure 4The utility model discloses a top-down structure schematic view.

[0020] In the drawing: 1, bottom plate, 2, permanent magnet mechanism body, 3, fixed screw rod, 4, lifting plate, 5, tension meter fixed plate, 6, dynamometer, 7, drive mechanism, 71, fixed frame, 72, operating frame, 73, rotating shaft, 74, support plate, 75, abutment rod, 8, positioning guide mechanism, 81, fixed sleeve, 82, accurate positioning guide rod, 83, auxiliary positioning guide rod, 84, limit sleeve, 85, copper bush, 9, through slot, 10, operating handle. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0022] Please refer to Figures 1-4 The utility model provides a kind of permanent magnet mechanism force measuring tool of ring network cabinet, including bottom plate 1, the bottom of bottom plate 1 is equipped with base, four groups of fixed screw rod 3 are installed between base and bottom plate 1, the surface of base is equipped with permanent magnet mechanism body 2, the top of bottom plate 1 is movably equipped with lifting plate 4, the top of lifting plate 4 is fixedly equipped with tension meter fixed plate 5, the surface of tension meter fixed plate 5 is fixedly equipped with dynamometer 6, the bottom hook of dynamometer 6 is detachably connected with the top of permanent magnet mechanism body 2;

[0023] The surface of bottom plate 1 is equipped with drive mechanism 7 for lifting lifting plate 4 and dynamometer 6, the surface of lifting plate 4 is equipped with two positioning guide mechanisms 8.

[0024] Drive mechanism 7 includes two groups of fixed frame 71, the opposite side of two groups of fixed frame 71 is rotatably equipped with operating frame 72, operating handle 10 for being convenient for user to operate is inserted in the top of operating frame 72, the top of operating frame 72 is equipped with abutment rod 75, lifting plate 4 is fixedly equipped with support plate 74 on the two sides of tension meter fixed plate 5, two groups of abutment rod 75 are fixedly installed on the side of two groups of support plate 74 respectively, it is convenient for through user to operate operating handle 10, make operating handle 10 drive operating frame 72 to drive lifting plate 4 and dynamometer 6 to rise under the cooperation of abutment rod 75.

[0025] Specifically, the two sides of operating frame 72 are fixedly inserted with rotating shaft 73, and one end of the two groups of rotating shaft 73 is rotatably inserted into the two groups of fixed frame 71, so as to make operating frame 72 rotatable by the cooperation of rotating shaft 73 and fixed frame 71, and then drive lifting plate 4 and dynamometer 6 to rise.

[0026] The positioning guide mechanism 8 comprises four sets of fixed sleeves 81 fixedly installed at the bottom of the bottom plate 1, the interiors of two sets of the fixed sleeves 81 are fixedly inserted with precision positioning guide rods 82, the interiors of the other two sets of the fixed sleeves 81 are fixedly inserted with auxiliary positioning guide rods 83, the top portions of the two sets of the precision positioning guide rods 82 and the two sets of the auxiliary positioning guide rods 83 are penetrated through the lifting plate 4 and located above the lifting plate 4, so that the lifting plate 4 is positioned and guided by the precision positioning guide rods 82 cooperating with the auxiliary positioning guide rods 83.

[0027] The lifting plate 4 is fixedly installed with limiting sleeves 84 at the outer sides of the two sets of the precision positioning guide rods 82, the interiors of the limiting sleeves 84 are fixedly installed with copper bushings 85, the inner walls of the copper bushings 85 are in sliding connection with the outer walls of the precision positioning guide rods 82, and the design can effectively reduce the influence of the friction generated by the precision positioning guide rods 82 on the measurement.

[0028] It is worth noting that the two precision positioning guide rods 82 are diagonally arranged, and the two sets of the auxiliary positioning guide rods 83 are diagonally arranged, and the rough machining precision requirement of the four positioning rods and the through holes thereof is improved, so as to further reduce the interference of the friction on the measurement process and result.

[0029] The bottom plate 1 is provided with a through slot 9 at the center, the bottom hook of the dynamometer 6 is connected with the top of the permanent magnet mechanism body 2 through the through slot 9, and the bottom hook of the dynamometer 6 and the connecting portion of the top of the permanent magnet mechanism body 2 are avoided through the through slot 9.

[0030] The four sets of fixed screw rods 3 are symmetrically fixedly inserted into the lining plates on the two sides of the bottom plate 1, the bottom portions of the four sets of fixed screw rods 3 are locked with the base through nuts, and the bottom plate 1 and the base are supported.

[0031] The working principle of the utility model is: when in use, the device is assembled on the small switch, whether the force value of the assembled permanent magnet, insulating rod and vacuum bulb is within the design requirement range, the assembled permanent magnet mechanism can be tested by the force measuring device, when the holding force of the test does not meet the design requirement, the concentricity test tool can be used for reassembly, etc., so as to ensure that the force value of the permanent magnet mechanism meets the assembly requirement.

[0032] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A permanent magnet mechanism force measuring tool for a ring main unit, comprising a bottom plate (1), characterized in that: A base is installed at the bottom of the base plate (1), four sets of fixing screws (3) are installed between the base and the base plate (1), a permanent magnet mechanism body (2) is installed on the surface of the base, a lifting plate (4) is movably installed on the top of the base plate (1), a tension gauge fixing plate (5) is fixedly installed on the top of the lifting plate (4), a dynamometer (6) is fixedly installed on the surface of the tension gauge fixing plate (5), and a bottom hook of the dynamometer (6) is detachably connected to the top of the permanent magnet mechanism body (2); A driving mechanism (7) for lifting and lowering the lifting plate (4) and the dynamometer (6) is installed on the surface of the bottom plate (1), and two sets of positioning guide mechanisms (8) are installed on the surface of the lifting plate (4).

2. The permanent magnet mechanism force measuring tool for a ring main unit according to claim 1, characterized in that: The driving mechanism (7) includes two groups of fixed frames (71), and operating frames (72) are rotatably mounted on opposite sides of the two groups of fixed frames (71). An operating handle (10) is plugged into the top of the operating frame (72) for easy operation by a user. Abutment rods (75) are mounted above both sides of the operating frame (72). The lifting plate (4) is located on both sides of the dynamometer fixed plate (5) and is fixedly mounted with support plates (74). The two groups of abutment rods (75) are respectively fixedly mounted on one side of the two groups of support plates (74).

3. The permanent magnet mechanism force measuring tool for a ring main unit according to claim 2, characterized in that: Rotating shafts (73) are fixedly plugged into both sides of the operating frame (72), and one end of the two groups of rotating shafts (73) are respectively rotatably plugged into the two groups of fixed frames (71).

4. The permanent magnet mechanism force measuring tool for a ring main unit according to claim 1, characterized in that: The positioning guide mechanism (8) comprises four groups of fixed sleeves (81), which are fixedly mounted on the bottom of the base plate (1), wherein two groups of the fixed sleeves (81) are fixedly plugged with precise positioning guide rods (82), and the other two groups of the fixed sleeves (81) are fixedly plugged with auxiliary positioning guide rods (83), and the tops of the two groups of precise positioning guide rods (82) and the two groups of auxiliary positioning guide rods (83) pass through the lifting plate (4) and are located above the lifting plate (4).

5. The force measuring tool for the permanent magnetic mechanism of a ring main unit according to claim 4, characterized in that: The lifting plate (4) is located on the outside of the two groups of precise positioning guide rods (82) and is fixedly installed with a limiting sleeve (84). The inside of the limiting sleeve (84) is fixedly installed with a copper bushing (85). The inner wall of the copper bushing (85) is slidably connected to the outer wall of the precise positioning guide rod (82).

6. The permanent magnet mechanism force measuring tool for a ring main unit according to claim 1, characterized in that: A through slot (9) is provided at the center of the bottom plate (1), and a bottom hook of the dynamometer (6) passes through the through slot (9) and is connected to the top of the permanent magnet mechanism body (2).

7. The permanent magnet mechanism force measuring tool for a ring main unit according to claim 1, characterized in that: The four groups of fixing screw rods (3) are symmetrically fixed and inserted into the lining plates on both sides of the bottom plate (1), and the bottoms of the four groups of fixing screw rods (3) are locked with the base through nuts.

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