A kind of integrated transmission line compression type strain clamp thickness adjustable hydraulic die
By designing an integrated hydraulic mold with adjustable thickness for compression tension clamps in transmission lines, the problem of insufficient crimping tightness was solved, achieving higher mechanical performance and durability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ELECTRIC POWER RES INST CHINA SOUTHERN POWER GRID CO LTD
- Filing Date
- 2023-08-18
- Publication Date
- 2026-08-04
AI Technical Summary
Existing compression-type tension clamps do not provide sufficient tightness at the aluminum tube tip, which can easily lead to conductor strand breakage and other mechanical property degradation.
An integrated hydraulic mold with adjustable thickness for compression tension clamps of transmission lines was designed. Through the groove and slide structure of the upper and lower molds, combined with the thickness adjustment component and thickening block, the shape of the crimping can be freely switched and the tightness can be adjusted.
It enhances the tightness of the crimping at the tip, reduces problems such as poor wire contact, corrosion, and frost heave, and improves mechanical load-bearing capacity.
Smart Images

Figure CN117039722B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of overhead transmission line construction technology, and in particular to an integrated hydraulic mold for adjustable thickness of compression tension clamps for transmission lines. Background Technology
[0002] The compression type tension clamp for transmission lines is the most widely used type of tension clamp for transmission lines. It uses hydraulic pressure to ensure a tight connection between all parts, thus guaranteeing the mechanical load-bearing capacity and current-carrying capacity of the tension clamp during use.
[0003] Although the technology for compression-type tension clamps is relatively mature, the crimping process is manually operated, leading to frequent crimping defects such as missed crimping, under-crimping, and incorrect crimping parameters. This is especially true at the aluminum tube extension point of the tension clamp, where cross-sectional changes result in insufficient crimping tightness when using the same mold for hydraulic operation. This reduces the crimped length of the aluminum tube conductor, weakening the clamp's grip and increasing the risk of broken strands in the extension conductor. Therefore, this invention proposes an integrated hydraulic mold with adjustable thickness for compression-type tension clamps used in power transmission lines. Summary of the Invention
[0004] This application provides an integrated hydraulic mold for adjustable thickness of compression tension clamps for power transmission lines, which effectively solves the problem of poor crimping effect at the tip of aluminum tubes.
[0005] In view of this, this application provides an integrated hydraulic mold for adjustable thickness of compression tension clamps for power transmission lines, comprising: an upper mold and a lower mold;
[0006] The upper mold and the lower mold have the same structure and are arranged symmetrically.
[0007] The bottom of the upper mold and the top of the lower mold are both provided with grooves;
[0008] The groove at the bottom of the upper mold and the groove at the top of the lower mold form a cavity with a hexagonal cross-section when the mold is closed;
[0009] The groove has symmetrical sliding grooves on both sides of its sidewalls;
[0010] A thickness adjustment component is slidably connected within the groove via the slide rail;
[0011] The thickness adjustment assembly includes a first filler and a second filler rotatably connected to the first filler;
[0012] The shapes of the first filler and the second filler are both matched to the shape of the groove, and the first filler and the second filler are both slidably connected to the groove;
[0013] The second filler is provided with a thickening block for changing the depth of the groove;
[0014] The upper mold and the lower mold have slots on their front and rear side walls for positioning the first filler and the second filler, respectively.
[0015] Optionally, the first filler includes a first left side groove filler strip and a first right side groove filler strip;
[0016] The second filler includes a second left-side groove filler strip and a second right-side groove filler strip;
[0017] The thickening block is fixed between the second left side slide groove filling strip and the second right side slide groove filling strip;
[0018] The first left-side slide filler strip and the second left-side slide filler strip, as well as the first right-side slide filler strip and the second right-side slide filler strip, are rotatably connected by a rotating shaft.
[0019] Optionally, the thickening block is integrally formed with the second filler.
[0020] Optionally, the thickening block is a trapezoidal thickening block;
[0021] The trapezoidal thickened block is slidably connected to the groove.
[0022] Optionally, the lengths of both the first filler and the second filler are equal to the length of the groove.
[0023] Optionally, both the first filler and the second filler have a snap-fit portion at their ends for engaging with the slot.
[0024] Optionally, the groove is an L-shaped groove.
[0025] As can be seen from the above technical solutions, the embodiments of this application have the following advantages: This hydraulic mold is integrated with the mold by setting a thickness adjustment component, which makes it easy to freely switch the shape of the mold during the pressing process. Furthermore, by using the thickening block to change the groove depth, the distance between the edges at the end of the drawing tip can be effectively reduced, increasing the tightness of the pressing at that point and avoiding poor contact at the drawing tip. At the same time, it can also reduce problems such as corrosion or frost heave caused by contaminants or moisture entering the wire clamp. Attached Figure Description
[0026] Figure 1 This is a schematic diagram illustrating the use of the integrated transmission line compression type tension clamp thickness adjustable hydraulic mold in the embodiments of this application;
[0027] Figure 2This is a schematic diagram of the upper mold structure when the second filler is used in an embodiment of this application;
[0028] Figure 3 This is a front view of the upper mold when the second filler is used in the embodiments of this application;
[0029] Figure 4 This is a bottom view of the upper mold when the second filler is used in the embodiments of this application;
[0030] Figure 5 This is a schematic diagram of the upper mold after the thickness adjustment component is removed in an embodiment of this application;
[0031] Figure 6 This is a front view of the upper mold after the thickness adjustment component has been removed in the embodiment of this application;
[0032] Figure 7 This is a schematic diagram of the thickness adjustment component in an embodiment of this application;
[0033] Figure 8 This is a schematic diagram of the upper mold structure when the first filler is used in an embodiment of this application;
[0034] The attached figures are labeled as follows:
[0035] 1-Upper mold, 2-Lower mold, 3-First filler, 31-First left side groove filler strip, 32-First right side groove filler strip, 4-Second filler, 41-Second left side groove filler strip, 42-Second right side groove filler strip, 5-Thickening block, 6-Groove, 7-Snap-fit part, 8-Groove, 9-Slot, 10-Rotating shaft. Detailed Implementation
[0036] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.
[0037] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0038] Unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0039] This application provides an embodiment of an integrated hydraulic mold for adjustable thickness of compression-type tension clamps for power transmission lines. Please refer to the following for details. Figures 1 to 8 .
[0040] The integrated hydraulic mold for adjustable thickness of compression tension clamps for transmission lines in this embodiment includes an upper mold 1 and a lower mold 2. The upper mold 1 and the lower mold 2 have the same structure and are arranged symmetrically. The bottom of the upper mold 1 and the top of the lower mold 2 are provided with grooves 6. When the mold is closed, the grooves 6 at the bottom of the upper mold 1 and the grooves 6 at the top of the lower mold 2 form a cavity with a hexagonal cross-section. The two sides of the groove 6 are symmetrically provided with sliding grooves 8. A thickness adjustment component is slidably connected in the groove 6 through the sliding grooves 8. The thickness adjustment component includes a first filler 3 and a second filler 4 rotatably connected to the first filler 3. The shapes of the first filler 3 and the second filler 4 are both matched with the shape of the sliding grooves 8, and the first filler 3 and the second filler 4 are slidably connected to the sliding grooves 8. The second filler 4 is provided with a thickening block 5 for changing the depth of the groove 6. The front and rear side walls of the upper mold 1 and the lower mold 2 are respectively provided with slots 9 for positioning the first filler 3 and the second filler 4.
[0041] It should be noted that this hydraulic mold is assembled with a thickness adjustment component, which allows for easy switching of the mold shape during the pressing process. Furthermore, by using the thickening block 5 to change the depth of the groove 6, the distance between the edges at the end of the drawing tip can be effectively reduced, increasing the tightness of the pressing at that point and preventing poor contact at the drawing tip. It can also reduce problems such as corrosion or frost heave caused by contaminants or moisture entering the wire clamp.
[0042] The above is Embodiment 1 of an integrated hydraulic mold for adjustable thickness of compression-type tension clamps for transmission lines, provided in this application. The following is Embodiment 2 of an integrated hydraulic mold for adjustable thickness of compression-type tension clamps for transmission lines, provided in this application. Please refer to the following for details. Figures 1 to 8 .
[0043] The integrated hydraulic mold for adjustable thickness of compression tension clamps for transmission lines in this embodiment includes an upper mold 1 and a lower mold 2. The upper mold 1 and the lower mold 2 have the same structure and are arranged symmetrically. The bottom of the upper mold 1 and the top of the lower mold 2 are provided with grooves 6. When the mold is closed, the grooves 6 at the bottom of the upper mold 1 and the grooves 6 at the top of the lower mold 2 form a cavity with a hexagonal cross-section. The two sides of the groove 6 are symmetrically provided with sliding grooves 8. A thickness adjustment component is slidably connected in the groove 6 through the sliding grooves 8. The thickness adjustment component includes a first filler 3 and a second filler 4 rotatably connected to the first filler 3. The shapes of the first filler 3 and the second filler 4 are matched with the shape of the sliding grooves 8, and the first filler 3 and the second filler 4 are slidably connected to the sliding grooves 8. The second filler 4 is provided with a thickening block 5 for changing the depth of the groove 6. The shape of the mold can be changed by the thickening block 5. The front and rear side walls of the upper mold 1 and the lower mold 2 are respectively provided with slots 9 for positioning the first filler 3 and the second filler 4.
[0044] Understandably, this hydraulic mold uses the slide groove 8 to replace the first filler 3 and the second filler 4. When crimping the aluminum tube wire crimping area, the aluminum tube is crimped at the non-tip point. The second filler 4 is replaced with the first filler 3. The second filler 4 can be rotated and suspended in the slot 9 on the back of the mold. At this time, the first filler 3 fills the slide groove 8 on both sides of the groove 6, preventing metal from entering the slide groove 8 and blocking it during crimping. At the same time, it ensures that the aluminum tube is pressed into a hexagon when the upper mold 1 and lower mold 2 are closed. When performing the final tip crimping, the second filler 4 is taken out from the slot 9 and rotated to a horizontal position. The first filler 3 is pushed into the slide groove 8. Then, the first filler 3 is rotated and suspended in the slot 9 on the front of the mold. At this time, the thickening block 5 on the second filler 4 will reduce the edge distance of the tip crimping, thereby making the tip crimping tighter.
[0045] Specifically, the first filler 3 includes a first left side groove filler strip 31 and a first right side groove filler strip 32, the second filler 4 includes a second left side groove filler strip 41 and a second right side groove filler strip 42, the thickening block 5 is fixed between the second left side groove filler strip 41 and the second right side groove filler strip 42, and the first left side groove filler strip 31 and the second left side groove filler strip 41, as well as the first right side groove filler strip 32 and the second right side groove filler strip 42, are rotatably connected by a rotating shaft 10.
[0046] The thickening block 5 can be integrally formed with the second filler 4.
[0047] The thickening block 5 can be a trapezoidal thickening block 5, which is slidably connected to the groove 6.
[0048] The lengths of the first filler 3 and the second filler 4 are both equal to the length of the groove 6.
[0049] Both the first filler 3 and the second filler 4 have a snap-fit part 7 at their ends for snapping into the slot 9.
[0050] The slide 8 can be an L-shaped slide 8.
[0051] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.
Claims
1. A hydraulic die for adjusting the thickness of a compression type strain clamp for an integrated power transmission line, characterized by, include: Upper mold and lower mold; The upper mold and the lower mold have the same structure and are arranged symmetrically. The bottom of the upper mold and the top of the lower mold are both provided with grooves; The groove at the bottom of the upper mold and the groove at the top of the lower mold form a cavity with a hexagonal cross-section when the mold is closed; The groove has symmetrical sliding grooves on both sides of its sidewalls; A thickness adjustment component is slidably connected within the groove via the slide rail; The thickness adjustment assembly includes a first filler and a second filler rotatably connected to the first filler; The shapes of the first filler and the second filler are both matched to the shape of the groove, and the first filler and the second filler are slidably connected to the groove. The second filler is provided with a thickening block for changing the depth of the groove; The upper mold and the lower mold have slots on their front and rear side walls for positioning the first filler and the second filler, respectively.
2. The hydraulic die for the thickness-adjustable compression-type strain clamp of the integrated power transmission line according to claim 1, characterized in that, The first filler includes a first left side groove filler strip and a first right side groove filler strip; The second filler includes a second left-side groove filler strip and a second right-side groove filler strip; The thickening block is fixed between the second left side slide groove filling strip and the second right side slide groove filling strip; The first left-side slide filler strip and the second left-side slide filler strip, as well as the first right-side slide filler strip and the second right-side slide filler strip, are rotatably connected by a rotating shaft.
3. The hydraulic die for the compression type strain clamp of the integrated power transmission line according to claim 1, wherein The thickening block is integrally formed with the second filler.
4. The hydraulic die for the compression type strain clamp of the integrated power transmission line according to claim 1, wherein The thickening block is a trapezoidal thickening block; The trapezoidal thickened block is slidably connected to the groove.
5. The hydraulic die for the compression type strain clamp of the integrated power transmission line according to claim 1, wherein The lengths of the first filler and the second filler are both equal to the length of the groove.
6. The hydraulic die for the compression type strain clamp of the integrated power transmission line according to claim 1, wherein Both the first filler and the second filler have snap-fit portions at their ends for engaging with the slot.
7. The hydraulic die of claim 1, wherein, The slide is an L-shaped slide.