Precast device of dropper
By designing fasteners for the support and limiting parts, the problems of heart-shaped ring misalignment and loosening during the prefabrication of the dropper were solved, achieving efficient and accurate dropper prefabrication and improving the stability and electrical performance of the contact network system.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-13
- Publication Date
- 2026-03-24
AI Technical Summary
Traditional dropper positioning columns are prone to displacement, loosening, or even falling off during the prefabrication process, as well as problems such as extrusion deformation of the thread and difficulty in ensuring the gap between the press-fit pipe and the heart-shaped ring.
Design a fastener comprising a support part, a contact part, and a limiting part. The support part and the limiting part form a guiding and limiting mechanism to ensure accurate positioning of the heart-shaped ring. The heart-shaped ring is fixed by the contact part and the limiting part to prevent displacement and loosening.
Significantly improves the accuracy and pass rate of dropper prefabrication, increases the one-time prefabrication compliance rate to 95%, ensures the stable operation and electrical conductivity of the contact network system, and reduces operational difficulty and cost.
Smart Images
Figure CN224028835U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to high speed railway overhead line system equipment technical field especially is involved in a kind of precasting device of pendant. BACKGROUND
[0002] In the operation system of modern electrified railway and urban rail transit, the overhead line system is the core link of electric traction. As the key equipment connecting the contact wire and the messenger wire, the core task of the pendant of overhead line system is to ensure that the contact wire is maintained at a reasonable height and appropriate sag state. This requirement is crucial to ensure stable current collection between the pantograph and the contact wire, continuous power supply, because slight deviation of the height and sag of the contact wire may cause poor contact between the pantograph and the contact wire, and further abnormal phenomena such as arcing, off-line, etc., which seriously affect the current collection quality and power transmission stability.
[0003] However, the current high-speed rail overhead line pendant precasting link faces many challenges. The traditional pendant positioning column is in the shape of a cylinder, and this structure has obvious defects when fixing the heart-shaped ring. During the precasting process, when the pre-tension is tightened, the heart-shaped ring is prone to deviation, loosening or even falling off, accompanied by problems such as wire compression deformation and difficulty in ensuring the gap between the compression pipe and the heart-shaped ring. SUMMARY
[0004] The utility model provides a kind of precasting device of pendant to solve the technical problem that heart-shaped ring is prone to deviation, loosening or even falling off in the process of assembling pendant in prior art.
[0005] The utility model provides a kind of precasting device of pendant, the precasting device includes fixed fastener, for fixing pendant heart-shaped ring, the fixed fastener includes:
[0006] supporting part, for fixing the fixed fastener;
[0007] contact part, in the shape of a cylinder, and connected to the supporting part in the height direction;And
[0008] limiting part, gradually decreasing in width along the first direction, and connected to the supporting part in the height direction;
[0009] Wherein, the limiting part is connected to the contact part in the first direction, the width of the limiting part is not greater than the diameter of the contact part, and the heart-shaped ring is sleeved on the contact part and the limiting part.
[0010] In a further aspect of the utility model, the height of the contact part is greater than the height of the limiting part and less than twice the height of the limiting part.
[0011] In the further scheme of the utility model, the contact part is symmetrically arranged, and the symmetry axis of the contact part is perpendicular to the center axis of the supporting part.
[0012] In the further scheme of the utility model, the outer contour of the supporting part is cylindrical, the center axis of the supporting part is collinear with the center axis of the contact part, and the contact part does not protrude from the peripheral surface of the supporting part.
[0013] In the further scheme of the utility model, the prefabricating device further comprises a scale table and a mounting column, and the mounting column is detachably connected to the scale table.
[0014] The supporting part is provided with a blind hole, and the supporting part is sleeved on the mounting column through the blind hole.
[0015] In the further scheme of the utility model, a sliding groove is formed in the scale table, and part of the mounting column is clamped into the sliding groove.
[0016] The prefabricating device provided by the utility model can achieve the following beneficial effects:
[0017] 1. Efficient fixing and accurate prefabrication: the contact part and the limiting part can firmly fix the heart-shaped ring in the horizontal direction, the limiting part can ensure that the tip of the heart-shaped ring faces the mounting direction, thereby effectively ensuring the gap value between the crimping pipe and the heart-shaped ring, greatly improving the accuracy and qualified rate of the dropper prefabrication, and significantly saving the prefabrication time.
[0018] 2. Significantly improving the one-time prefabrication compliance rate: by using the prefabricating device, the one-time prefabrication compliance rate of the dropper can be improved to about 95%, which lays a solid foundation for the high-quality prefabrication of the catenary dropper related structure and effectively guarantees the stable operation and electrical conduction performance of the whole catenary system.
[0019] 3. Convenient operation and low technical threshold: the fixed fastener structure is reasonable, the material is solid, and the manufacturing cost is low, and it is suitable for various dropper prefabricating tables. The operation method is simple and easy to learn, and the operating personnel only need to understand the working principle and operation process, and can quickly start, easily and standardly complete the dropper prefabrication work, greatly reducing the technical requirements for the operating personnel and reducing the work burden.
[0020] Other features and advantages of the embodiments of the utility model will be described in the subsequent specific implementation manner part. DRAWINGS
[0021] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.
[0022] Fig. 1 It is a structure diagram of one of the fixed fasteners of the present application.
[0023] Fig. 2 It is a structure diagram of the prefabrication device of one of the hangers of the present application.
[0024] Reference signs
[0025] 100, fixed fastener; 110A, blind hole; 110, support part; 120, contact part; 130, limiting part; 200, scale table; 300, mounting column; 200A, sliding groove. Specific embodiments
[0026] In order to make the above and other features and advantages of the present application clearer, the present application will be further described below with reference to the drawings. It should be understood that the specific embodiments given herein are for the purpose of explanation and are only exemplary, but are not limiting.
[0027] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.
[0028] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.
[0029] In the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix" and so on should do the broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be direct connection, also can indirectly connect through the intermediate medium, can be the communication of two elements or the interaction of two elements, unless another definite limitation.For the ordinary skilled person in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0030] In the utility model, unless another definite provision and limitation, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium.Moreover, the first feature "above", "above" and "on" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature.The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.
[0031] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model.In this specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example.Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.In addition, the skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of different embodiments or examples without contradiction.
[0032] Please refer to Figs. 1-2 The utility model provides a kind of precasting device of sling, the precasting device includes fixed fastener 100, for fixing sling core ring, the fixed fastener 100 includes:
[0033] Supporting portion 110 is used for fixing the fixed fastener 100;
[0034] Contact portion 120 is cylindrical, and is connected in the height direction on the supporting portion 110;And
[0035] Limiting portion 130 is gradually reduced in width along the first direction, and is connected in the height direction on the supporting portion 110;
[0036] The limiting part 130 is connected with the contact part 120 in the first direction, the width of the limiting part 130 is not greater than the diameter of the contact part 120, and the heart-shaped ring is sleeved on the contact part 120 and the limiting part 130.
[0037] In the scheme, the limiting part 130 is connected with the supporting part 110 in the height direction, and the width gradually decreases in the first direction, and the unique structure design forms a natural guiding and limiting mechanism. When the heart-shaped ring is sleeved on the contact part 120, the width gradually decreasing side of the limiting part 130 can guide the heart-shaped ring to smoothly slide to the predetermined position, and the heart-shaped ring is fixed by using the width decreasing characteristic, so that displacement and rotation of the heart-shaped ring in the first direction in subsequent operation or use process are effectively prevented, the positioning accuracy of the heart-shaped ring is ensured, and the whole hanging line is conveniently prefabricated.
[0038] It should be noted that the first direction is the direction of the view. Fig. 2
[0039] In the further scheme of the utility model, the height of the contact part 120 is greater than the height of the limiting part 130 and less than twice the height of the limiting part 130.
[0040] In the further scheme of the utility model, the contact part 120 is symmetrically arranged, and the symmetry axis of the contact part 120 is perpendicular to the center axis of the supporting part 110.
[0041] In the further scheme of the utility model, the outer contour of the supporting part 110 is cylindrical, the center axis of the supporting part 110 is coaxial with the center axis of the contact part 120, and the contact part 120 does not protrude from the peripheral surface of the supporting part 110.
[0042] In the further scheme of the utility model, the prefabricating device further comprises a scale table 200 and a mounting column 300, and the mounting column 300 is detachably connected to the scale table 200.
[0043] The supporting part 110 is provided with a blind hole 110A, and the supporting part 110 is sleeved on the mounting column 300 through the blind hole 110A.
[0044] In the further scheme of the utility model, the scale table 200 is provided with a sliding groove 200A, and part of the mounting column 300 is clamped into the sliding groove 200A.
[0045] The prefabricating device provided by the utility model can achieve the following beneficial effects:
[0046] 1. High efficiency fixation and precision pre-fabrication: the contact part 120 and the limiting part 130 can firmly fix the heart-shaped ring, effectively ensure the gap value between the crimping tube and the heart-shaped ring, greatly improve the accuracy and qualified rate of the pendant pre-fabrication, and significantly save the pre-fabrication time.
[0047] 2. Significantly improve the one-time pre-fabrication compliance rate: after using the pre-fabrication device of the application, the one-time pre-fabrication compliance rate of the pendant can be improved to about 95%, which lays a solid foundation for high-quality pre-fabrication of the overhead contact system related structure, and effectively guarantees the stable operation and electrical conduction performance of the entire overhead contact system.
[0048] 3. Convenient operation and low technical threshold: the fixed fastener 100 has reasonable structure, solid material and low manufacturing cost, and is suitable for various pendant pre-fabrication tables. Its operation method is simple and easy to learn, and the operating personnel only need to understand its working principle and operation process, and can quickly start, easily and standardly complete the pendant pre-fabrication work, greatly reducing the technical requirements for the operating personnel and reducing the work burden. Among them, the material is preferably 25 steel, which has high strength and high adaptability.
[0049] When installing the pendant by using the utility model:
[0050] First, the heart-shaped ring is sleeved on the limiting part 130 and the contact part 120, and then when the tension pre-tension operation is performed, due to the stable effect of the fixed fastener 100 and the limiting effect of the limiting part 130, the heart-shaped ring can remain stationary, effectively avoiding the occurrence of deviation, loosening and falling off. In this process, the connection operation of the crimping tube and the pendant wire and other components can be conveniently performed, and the gap value between the crimping tube and the heart-shaped ring can be accurately controlled to ensure that it meets the pre-fabrication standard. After completing the connection, the pendant meeting the high-quality standard requirements is successfully pre-fabricated and can be directly applied to the overhead contact system installation.
[0051] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the utility model, and the ordinary skilled in the art can change, modify, replace and modify the above-mentioned embodiments within the scope of the utility model.
Claims
1. A prefabricated device for a suspension string, characterized in that, The prefabricated device includes a fixing fastener for fixing the suspension wire heart-shaped ring, the fixing fastener comprising: Support portion, used to fix the fastener; The contact portion is cylindrical and is connected to the support portion in the height direction; and The limiting part gradually decreases in width along the first direction and is connected to the support part in the height direction; The limiting part is connected to the contact part in a first direction, the width of the limiting part is not greater than the diameter of the contact part, and the heart-shaped ring is sleeved on the contact part and the limiting part.
2. The prefabrication device for the suspension wire according to claim 1, characterized in that, The height of the contact portion is greater than the height of the limiting portion but less than twice the height of the limiting portion.
3. The prefabrication device for the suspension cable according to claim 1, characterized in that, The contact portions are symmetrically arranged, and the axis of symmetry of the contact portions is perpendicular to the central axis of the support portion.
4. The prefabrication device for the suspension cable according to claim 1, characterized in that, The outer contour of the support is cylindrical, the central axis of the support is the same straight line as the central axis of the contact part, and the contact part does not protrude from the circumference of the support.
5. The prefabrication device for the suspension cable according to claim 1, characterized in that, The prefabrication device also includes a scale platform and a mounting column, the mounting column being detachably connected to the scale platform; The support part has a blind hole, and the support part is fitted onto the mounting column through the blind hole.
6. The prefabrication device for the suspension wire according to claim 5, characterized in that, The scale platform is provided with a sliding groove, and part of the mounting column is inserted into the sliding groove.