Auxiliary tool for power frequency withstand voltage test
The rotating support system with lockable arms and explosion-proof enclosure addresses the inefficiencies and safety hazards of moving large electrical products during testing by enabling easy repositioning and protecting against explosion debris.
Patent Information
- Application Number
- CN202422014560.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-20
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-08-20
AI Technical Summary
In the power frequency voltage withstand test, bulky electrical products are difficult to move flexibly during the test, and there is a risk of explosion, resulting in inefficient testing and safety hazards.
An auxiliary tool for power frequency pressure resistance testing is designed, including an annular tool base, a rotating mechanism, a supporting roller arm, a locking structure and an explosion-proof mechanism. By supporting roller arm to support and rotate electrical products, the annular explosion-proof spring and explosion-proof plate are used to buffer the impact force of the explosion fragments to ensure the safety and efficiency of the test process.
It realizes flexible rotation and smooth movement of electrical products, reduces the intensity of testing labor, improves testing efficiency, and protects testers and equipment from explosive fragments through explosion-proof mechanisms.
Smart Images
Figure CN223107879U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of power frequency withstand voltage testing, and particularly relates to an auxiliary tooling for power frequency withstand voltage testing. Background Art
[0002] Power frequency withstand voltage testing is a method to test the insulation characteristics of various electrical products, electrical components, and insulating materials through high voltage. Power frequency withstand voltage testing mainly adopts two methods: DC withstand voltage test and AC withstand voltage test. Power frequency withstand voltage testing ensures that electrical products can work in a safe state during operation.
[0003] During the power frequency withstand voltage testing process, during the testing of large products such as cables and transformers, since the product needs to be moved during the testing process to facilitate the testing of different parts of the product, it is necessary to move the heavy electrical product during the testing process to facilitate the electrical connection between the testing product and the testing instrument and to ground the testing product. However, it is very difficult to move the heavy testing product during the process of changing its orientation.
[0004] During the testing process, in order to better move the heavy testing product to change its orientation and facilitate the electrical connection with electrical equipment, it is necessary for multiple operators to synchronously move the heavy electrical equipment. Obviously, this method leads to too low testing efficiency and relatively high testing labor intensity.
[0005] At the same time, during the testing process, once the testing product, such as a defective product, is under high voltage testing, the product is easily broken down by high voltage electricity and even has the risk of explosion. Therefore, during the testing process, a safe distance needs to be maintained between the testing product and the testing personnel. However, in the actual testing process, although the safe distance greatly improves the protection of the testing personnel, under high voltage testing, the explosion causes the product fragments to fly, and the flying product fragments and pieces are very likely to splash and hit the testing personnel, and the testing is also relatively dangerous. Summary of the Utility Model
[0006] Based on the above background, the purpose of the utility model is to provide an auxiliary tooling for power frequency withstand voltage testing.
[0007] To achieve the above purpose, the utility model adopts the following technical solutions:
[0008] An auxiliary tooling for power frequency withstand voltage testing, including an annular tooling base, a rotating mechanism is rotatably connected to the top of the annular tooling base, the rotating mechanism includes a central rotating seat, and a plurality of supporting rolling arms for supporting the testing product are fixedly connected to the outer side wall of the central rotating seat;
[0009] A locking structure for locking the testing product is assembled and connected to the supporting rolling arm;
[0010] The power frequency withstand voltage test auxiliary tooling further includes an explosion-proof mechanism, and the explosion-proof mechanism includes an explosion-proof cylinder covering the top of the annular tooling base;
[0011] The top of the explosion-proof cylinder is connected with an explosion-proof plate through a plurality of spring members;
[0012] A plurality of annular explosion-proof springs are sleeved on the explosion-proof cylinder.
[0013] Preferably, a support bottom beam is fixedly connected to the central part of the annular tooling base, a rotating shaft is rotatably connected to the center of the top of the support bottom beam, and the rotating shaft is fixedly assembled on the central rotating seat.
[0014] Preferably, an annular rib plate is fixedly connected to the top of the annular tooling base, and the outer end of the support rolling arm is assembled and connected with a contact roller that contacts and rolls on the inner side wall of the annular rib plate.
[0015] Preferably, a support rolling ball component is assembled and connected to the bottom of the support rolling arm. The support rolling ball component includes a rolling ball seat fixedly connected to the support rolling arm, a rolling ball is rotatably connected in the rolling ball seat, and the rolling ball supports and rolls on the top of the annular tooling base.
[0016] Preferably, the outer side wall of the central rotating seat is fixedly connected to the inner end part of the support rolling arm through a plurality of fixed connecting rods.
[0017] Preferably, the locking structure includes a chute opened on the support rolling arm, an internal sliding rod is fixedly connected in the chute, a locking plate is slidably connected on the internal sliding rod, and a pushing nut for pushing the locking plate is threadedly connected on the internal sliding rod.
[0018] Preferably, a plurality of ear plates are fixedly connected to the lower end of the outer side wall of the explosion-proof cylinder, and bolts for fastening to the top of the annular tooling base are threadedly connected to the ear plates.
[0019] Preferably, the spring member includes a spring sliding rod fixedly connected to the top of the explosion-proof cylinder barrel opening, and the spring sliding rod is slidably connected to the explosion-proof plate;
[0020] A retaining seat is threadedly connected to the top of the spring sliding rod.
[0021] Preferably, a spring is sleeved on the spring sliding rod, and the upper and lower ends of the spring respectively abut against the top of the explosion-proof plate and the bottom of the retaining seat.
[0022] The utility model has the following beneficial effects:
[0023] 1. The heavy test product can be placed and supported on the support roller arm. The support roller arm can carry the test product to rotate, which is convenient for the electrical connection between different parts of the product and the test instrument during the test, and for the grounding of the test product, which is convenient for testing. At the same time, it is used to reduce the test workload during the test to improve the test efficiency. During the test, since the resistance roller rolls on the annular rib plate, it ensures that the heavy test product can be stable during the test experiment and can be flexibly rotated and moved.
[0024] 2. A number of annular explosion-proof springs are sleeved on the explosion-proof tube. The annular explosion-proof spring is clamped on the explosion-proof tube, and under the elastic locking, the explosion-proof tube is kept elastically tightened. When the test product is not pressure-resistant and explodes, once the explosion-proof tube explodes, the explosion-proof tube and the exploded product fragments hit the annular explosion-proof spring. At this time, the impact force of the explosion fragments is buffered under the elastic deformation of the annular explosion-proof spring. In this way, the fragments that explode, with the cooperation of multiple annular explosion-proof springs distributed up and down, form an elastic "retaining wall" and thus greatly reduce the explosion kinetic energy of the explosion fragments, thereby reducing the kinetic energy of the explosion fragments, protecting the test personnel and test equipment, and avoiding damage to personnel and products caused by the fragments splashed by the explosion.
[0025] 3. The explosion-proof plate is used to form protection from the top of the explosion-proof tube, further avoiding the technical defect that the product fragments that are shattered by the test equipment due to the pressure-resistant explosion burst out from the explosion-proof tube and cause damage to equipment and personnel. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.
[0027] Figure 1 It is a schematic diagram of the overall structure in an embodiment of the utility model;
[0028] Figure 2 This is a schematic diagram of the structure of the supporting roller arm in the embodiment of the utility model;
[0029] Figure 3 This is a structural schematic diagram of the locking structure in the embodiment of the utility model;
[0030] Figure 4 For the utility model embodiment Figure 2 A schematic diagram of the structure from another perspective;
[0031] Figure 5 For the utility model embodiment Figure 2The top view in
[0032] The realization of the purpose, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings in conjunction with the embodiments. Specific embodiments
[0033] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.
[0034] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.
[0035] In addition, in the present utility model, descriptions such as "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.
[0036] Embodiment 1
[0037] As Figures 1-5 shown, a power frequency withstand voltage test auxiliary tooling includes an annular tooling base 1, and the central part of the annular tooling base 1 has an annular hole.
[0038] The top of the annular tooling base 1 is rotatably connected with a rotating mechanism. The rotating mechanism includes a central rotating seat 51. Specifically, a supporting bottom beam 12 is fixedly connected to the central part of the annular tooling base 1. The top center of the supporting bottom beam 12 is rotatably connected with a rotating shaft (in the existing conventional manner, the rotating shaft is rotatably connected to a bearing at the top center position of the supporting bottom beam 12), and the rotating shaft is fixedly assembled on the central rotating seat 51.
[0039] A plurality of supporting rolling arms 52 for supporting test products are fixedly connected to the outer side wall of the central rotating seat 51 (specifically, the outer side wall of the central rotating seat 51 is fixedly connected to the inner end part of the supporting rolling arms 52 through a plurality of fixed connecting rods).
[0040] Specifically, a circular rib plate 11 is fixedly connected to the top of the circular tooling base 1, and a contact roller 55 that contacts and rolls on the inner side wall of the circular rib plate 11 is assembled and connected to the outer end of the support rolling arm 52. At the same time, in order to improve the flexibility of rotation, a support rolling ball component is assembled and connected to the bottom of the support rolling arm 52. The support rolling ball component includes a rolling ball seat 54 fixedly connected to the support rolling arm 52 (a groove for limiting the rolling ball 541 is provided on the rolling ball seat 54), a rolling ball 541 is rotatably connected in the rolling ball seat 54, and the rolling ball 541 supports and rolls on the top of the circular tooling base 1.
[0041] Specifically, heavy test products such as cable coils and electrical equipment are placed and supported on the support rolling arm 52. Then, the operator rotates the support rolling arm 52. During the actual working process, in order to facilitate the rotation of the support rolling arm 52, a driving hand rod 521 is fixedly connected to the top of the support rolling arm 52. The operator drives the support rolling arm 52 to rotate the test product by the driving hand rod 521, which is convenient for making electrical connections between different parts of the product and the test instrument during the test, and for grounding the test product, thus facilitating the test. At the same time, it is used to reduce the test workload during the test to improve the test efficiency.
[0042] During the test, since the contact roller 55 contacts and rolls on the circular rib plate 11, it is ensured that the heavy test product can rotate smoothly and flexibly to move its position during the test experiment.
[0043] Embodiment 2
[0044] As Figures 1-5 shown, on the basis of the structure of Embodiment 1, in order to ensure that the test product can be moved smoothly in a positioned state when moving the test product during the test experiment, a locking structure for locking the test product is assembled and connected to each support rolling arm 52. The test product is locked by the cooperation of the locking structures on each support rolling arm 52.
[0045] Specifically, the locking structure includes a chute opened on the support rolling arm 52, an internal sliding rod 531 is fixedly connected in the chute, a locking plate 53 is slidably connected to the internal sliding rod 531, and a pushing nut 5311 for pushing the locking plate 53 is threadedly connected to the internal sliding rod.
[0046] The test product is loaded on the support rolling arm 52, the locking plate 53 is pressed against the outer side wall of the test product, and then the pushing nut 5311 is pushed inwards to press against the locking plate 53, so as to realize full contact and locking of the test product, ensuring that when the product needs to be rotated and adjusted in position during the test, the product can rotate and move its position smoothly.
[0047] At the same time, the purpose of this method is to lock the product. Once the product explodes due to high - voltage intolerance during the test, the locked product is not likely to disperse, thus protecting the test personnel.
[0048] Embodiment 3
[0049] As Figures 1-5 shown, on the basis of the structure of Embodiment 2, the above - mentioned power - frequency withstand voltage test auxiliary tooling further includes an explosion - proof mechanism. The explosion - proof mechanism includes an explosion - proof cylinder 2 covering the top of the annular tooling base 1.
[0050] Specifically, a plurality of ear plates 21 are fixedly connected to the lower end of the outer side wall of the explosion - proof cylinder 2, and bolts tightened at the top of the annular tooling base 1 are thread - connected to the ear plates 21. During the test, the explosion - proof cylinder 2 is covered on the top of the annular tooling base 1. At this time, the test product is covered inside the explosion - proof cylinder 2. After the bolts penetrate through the ear plates 21, they are tightened into the corresponding threaded grooves at the top of the annular tooling base 1 to realize the covering of the explosion - proof cylinder 2.
[0051] At the same time, in order to improve the explosion - proof effect, a plurality of annular explosion - proof springs 3 are sleeved on the above - mentioned explosion - proof cylinder 2. The annular explosion - proof springs 3 are hoop - shaped on the explosion - proof cylinder 2 and, under the elastic locking, keep the explosion - proof cylinder 2 elastically tightened. When the test product explodes due to pressure intolerance, once the explosion - proof cylinder 2 explodes, the explosion - proof cylinder 2 and the broken pieces of the exploded product impact the annular explosion - proof springs 3. At this time, under the elastic deformation of the annular explosion - proof springs 3, the impact force of the explosion fragments is buffered (using the deformation of the spring to form a buffer is a conventional application of the inherent properties of the spring in the prior art). Through this method, the exploded fragments, with the cooperation of a plurality of annular explosion - proof springs 3 distributed up and down, form an elastic "barrier wall", thereby greatly reducing the explosion kinetic energy of the explosion fragments, achieving the reduction of the kinetic energy of the explosion fragments, and realizing the protection of the test personnel and test equipment, and avoiding damage to personnel and products caused by the flying fragments of the explosion.
[0052] Similarly, in order to prevent the broken pieces of the product from splashing from the top of the explosion - proof cylinder 2, an explosion - proof plate 4 is connected to the top of the above - mentioned explosion - proof cylinder 2 through a plurality of spring members; the cross - sectional shape of the explosion - proof plate 4 is circular.
[0053] Specifically, the spring members include spring slide rods 41 fixedly connected to the top opening of the explosion - proof cylinder 2. The spring slide rods 41 are slidably connected to the explosion - proof plate 4; a retaining seat 42 is thread - connected to the top of the spring slide rods 41. A spring 43 is sleeved on the spring slide rods 41, and the upper and lower ends of the spring 43 respectively abut against the top of the explosion - proof plate 4 and the bottom of the retaining seat 42.
[0054] During operation, after installing the explosion-proof cylinder 2, slide the explosion-proof plate 4 along the spring slide rod 41, then put the spring onto the spring slide rod 41, and then threadedly fasten the retaining seat 42 to the upper end of the spring slide rod 41. During the test, high voltage electricity is introduced into the test equipment. Once the test equipment explodes, the fragments of the explosion impact the explosion-proof plate 4 at this time. At this time, the explosion-proof plate 4 rebounds. During the rebounding process, the explosion-proof plate 4 squeezes a plurality of springs 43. Similarly, the elastic deformation of the springs 43 is used to buffer the greater impact force of the explosion-proof plate 4.
[0055] Through the above method, it is further realized that once the product cannot withstand pressure and explodes during the test, the explosion energy of the explosion fragments is buffered, so as to protect the test personnel and test equipment.
[0056] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by those skilled in the art within the essence of the present invention should also fall within the protection scope of the present invention.
Claims
1. An auxiliary tooling for power frequency withstand voltage test, characterized in that It includes a circular tooling base, and a rotating mechanism is rotatably connected to the top of the circular tooling base. The rotating mechanism includes a central rotating base, and a plurality of supporting rolling arms for supporting test products are fixedly connected to the outer side wall of the central rotating base; A locking structure for locking the test product is assembled and connected to the supporting rolling arm; The power frequency withstand voltage test auxiliary tooling further includes an explosion-proof mechanism, and the explosion-proof mechanism includes an explosion-proof cylinder covering the top position of the circular tooling base; The top of the explosion-proof cylinder is connected to an explosion-proof plate through a plurality of spring members; A plurality of annular explosion-proof springs are sleeved on the explosion-proof cylinder.
2. The power frequency withstand voltage test auxiliary tooling according to claim 1, wherein A supporting bottom beam is fixedly connected to the central part of the circular tooling base, and a rotating shaft is rotatably connected to the center of the top of the supporting bottom beam. The rotating shaft is fixedly assembled on the central rotating base.
3. The auxiliary tooling for power frequency withstand voltage test according to claim 1, characterized in that, An annular rib plate is fixedly connected to the top of the circular tooling base, and a contact roller that contacts and rolls on the inner side wall of the annular rib plate is assembled and connected to the outer end of the supporting rolling arm.
4. The power frequency withstand voltage test auxiliary tooling according to claim 3, characterized in that A supporting rolling ball component is assembled and connected to the bottom of the supporting rolling arm. The supporting rolling ball component includes a rolling ball seat fixedly connected to the supporting rolling arm, a rolling ball is rotatably connected in the rolling ball seat, and the rolling ball supports and rolls on the top of the circular tooling base.
5. The power frequency withstand voltage test auxiliary tooling according to claim 1, wherein The outer side wall of the central rotating base is fixedly connected to the inner end part of the supporting rolling arm through a plurality of fixed connecting rods.
6. The power frequency withstand voltage test auxiliary tooling according to claim 1, wherein The locking structure includes a chute opened on the supporting rolling arm, an inner sliding rod is fixedly connected in the chute, a locking plate is slidably connected to the inner sliding rod, and a pushing nut for pushing the locking plate is threadedly connected to the inner sliding rod.
7. The power frequency withstand voltage test auxiliary tooling according to claim 1, wherein A plurality of ear plates are fixedly connected to the lower end of the outer side wall of the explosion-proof cylinder, and bolts for fastening to the top position of the circular tooling base are threadedly connected to the ear plates.
8. The auxiliary tooling for power frequency withstand voltage test according to claim 1, wherein The spring member includes a spring sliding rod fixedly connected to the top barrel opening of the explosion-proof cylinder, and the spring sliding rod slidably connects the explosion-proof plate; A retaining seat is threadedly connected to the top of the spring sliding rod.
9. The power frequency withstand voltage test auxiliary tooling according to claim 8, characterized in that, A spring is sleeved on the spring sliding rod, and the upper and lower ends of the spring respectively abut against the top of the explosion-proof plate and the bottom of the retaining seat.