A molded busbar clamp

Abstract

The utility model relates to a bus clamp of mould pressing, belong to bus clamp technical field, this bus clamp of mould pressing includes: upper clamp piece, lower clamp piece and the number is two's threaded sleeve, upper clamp piece and lower clamp piece opposite side, in this scheme upper clamp piece and lower clamp piece adopt high temperature high pressure one mould pressing, can realize large -scale production, production efficiency is higher, and production cost is moderate, when fixing to bus, only need to install threaded sleeve with upper clamp piece, lower clamp piece and use bolt and corresponding threaded sleeve to tighten can form multiple accommodation slot for bus to penetrate, and the installation step is more convenient, can realize the purpose of saving production cost and realizing convenient installation, and the setting of limiting mechanism, through the end of limiting frame and the joint of card frame, the joint of card bar and card hole, be favorable to the limiting of bolt after tightening, avoid bolt loosening in the process of fixing to bus, thereby strengthen the stability of the device in the process of fixing to bus.

Description

Technical Field

[0001] This utility model relates to the field of busbar clamp technology, and in particular to a molded busbar clamp. Background Technology

[0002] Busbar clamps are key clamps used in power systems to fix and protect busbars. They prevent busbar swaying, improve system stability and reliability, and are widely used in substations, power plants, distribution stations, and industrial fields.

[0003] The currently mainstream busbar clamps include: 1. Conductive type: aluminum alloy busbar clamps, stainless steel busbar clamps, etc. This type of busbar clamp has a high manufacturing cost; 2. Non-conductive type: engineering plastic busbar clamps. This type of busbar clamp has a lower cost, but when fixing the busbar, multiple busbar clamps need to be fixed one by one, which is inconvenient. The two mainstream busbar clamps cannot meet the dual requirements of manufacturing cost and easy installation. Utility Model Content

[0004] Therefore, it is necessary to provide a molded busbar clamp to address the issue that the two types of busbar clamps used cannot simultaneously meet the dual requirements of production cost and ease of installation.

[0005] It includes: an upper clamping block, a lower clamping block, and two threaded sleeves. The upper clamping block and the lower clamping block each have three grooves at fixed intervals along their length on opposite sides. The upper clamping block and the lower clamping block each have two through holes in their middle. Bolts are installed in the through holes. The upper clamping block and the lower clamping block are fixedly connected to the threaded sleeves by bolts. It also includes a limiting mechanism, which comprises multiple rings. One end of each ring is fixedly connected to a limiting frame, and both ends of the threaded sleeve are fixedly connected to a retaining frame. A retaining rod is slidably connected to the upper surface of each ring, and a retaining hole is provided on the inner wall of the bolt and nut.

[0006] In one embodiment, a spring is fixedly connected to one side of the lever, and the other end of the spring is fixedly connected to the inner wall of the ring. This facilitates the application of force to the lever to engage with the locking hole.

[0007] In one embodiment, the vertical cross-section of both the limiting frame and the card frame is hexagonal, and the shape of the surface of the limiting frame matches the overall shape of the inner wall of the card frame. This ensures the connection between the end of the limiting frame and the card frame, preventing rotation after the limiting frame is connected to the card rod.

[0008] In one embodiment, the overall shape of one side of the inner wall of the through hole is hexagonal, and the overall shape of the surface of the threaded sleeve is hexagonal. This helps to ensure the stability of the connection between the threaded sleeve and the through hole and prevents the threaded sleeve from rotating.

[0009] In one embodiment, the distance between the diagonals of the inner wall of the limiting frame is greater than the diameter of the bolt, and the inner edge diameter of the ring is greater than the diameter of the bolt. This avoids interference between the bolt and the limiting frame during the installation of the bolt and threaded sleeve.

[0010] In one embodiment, a contact pad, which is a rubber component, is fixedly connected to the other end of the ring. This increases the friction between the bolt and the contact surface of the ring when the bolt is tightened, thus enhancing the stability of the bolt after tightening.

[0011] In one embodiment, the overall shape of the locking rod is "L"-shaped, and the shape of the vertical cross-section of the locking hole matches the shape of the end of the locking rod. This ensures a good connection between the locking rod and the locking hole, preventing the end of the locking rod from having any room to move within the locking hole.

[0012] In one embodiment, a groove is formed on the upper end of the inner wall of the ring, and the spring is disposed in the groove. This helps to limit the movement path of the clamping rod and ensures that the clamping rod maintains its original path during movement, thereby ensuring that the end of the clamping rod enters the clamping hole after the bolt is tightened.

[0013] Beneficial effects 1. In this solution, the upper and lower clamping blocks are formed by high temperature and high pressure in one molding process, which can achieve mass production, high production efficiency, and moderate production cost. When fixing the busbar, it is only necessary to install the threaded sleeve with the upper and lower clamping blocks and tighten the bolts with the corresponding threaded sleeves to form multiple receiving slots for the busbar to pass through. The installation steps are relatively convenient, which can save production costs and achieve the purpose of convenient installation. In addition, the setting of the limiting mechanism, through the end of the limiting frame engaging with the card frame and the card rod engaging with the card hole, is conducive to limiting the bolts after tightening, preventing the bolts from loosening during the fixing of the busbar, thereby enhancing the stability of the device in the process of fixing the busbar. 2. The contact pad in the above-mentioned limiting mechanism helps to increase the friction between the bolt and the contact surface of the ring when the bolt is tightened, thereby enhancing the stability of the bolt after tightening. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is an exploded view of the structure of this utility model; Figure 3 This is a schematic diagram of the limiting mechanism and the lower clamping block installation structure of this utility model; Figure 4 This is a schematic diagram of the locking rod structure of this utility model; Figure 5 This is a cross-sectional view of the ring and the locking rod of this utility model.

[0016] Figure label: 100. Upper clamping block; 200. Lower clamping block; 300. Threaded sleeve; 400. Groove; 500. Through hole; 600. Bolt; 700. Limiting mechanism; 710. Ring; 711. Locking rod; 712. Spring; 720. Limiting frame; 730. Locking frame; 740. Locking hole; 750. Contact pad. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0018] The following is combined Figures 1-5 This invention describes a molded busbar clamp.

[0019] In one embodiment, a molded busbar clamp includes: an upper clamping block 100, a lower clamping block 200, and two threaded sleeves 300. The upper clamping block 100 and the lower clamping block 200 each have three grooves 400 at fixed intervals along their length on opposite sides. The upper clamping block 100 and the lower clamping block 200 each have two through holes 500 in their middle portions. Bolts 600 are installed in the through holes 500. The upper clamping block 100 and the lower clamping block 200 are fixedly connected to the threaded sleeves 300 by the bolts 600. It also includes a limiting mechanism 700, which includes multiple rings 710. One end of the ring 710 is fixedly connected to a limiting frame 720. Both ends of the threaded sleeve 300 are fixedly connected to a retaining frame 730. A retaining rod 711 is slidably connected to the upper surface of the ring 710. The inner wall of the nut of the bolt 600 is provided with a retaining hole 740.

[0020] In this embodiment, the upper clamping block 100 and the lower clamping block 200 are made of sheet molding compound (SMC). Manufacturing process of upper clamping block 100 and lower clamping block 200: high temperature and high pressure molding technology; When manufacturing the upper clamping block 100 and the lower clamping block 200: the metal mold for manufacturing the upper clamping block 100 and the lower clamping block 200 is heated and pressurized by a hydraulic press, a specified weight of BMC material is placed in it, and after heat preservation and pressure preservation, the mold is demolded and the surface is treated after demolding to obtain the finished product.

[0021] The upper clamping block 100 and the lower clamping block 200 have the same shape. The number of rings 710 is set to four, and the outer diameter of the rings 710 is greater than the maximum diameter of the through hole 500.

[0022] The upper clamping block 100 and the lower clamping block 200 are formed by high temperature and high pressure in one molding process, which can realize mass production, with high production efficiency and moderate production cost. When installing the upper clamping block 100 and the lower clamping block 200, the threaded sleeve 300 is inserted through the through hole 500 of the upper clamping block 100 and the lower clamping block 200, and the opposite sides of the upper clamping block 100 and the lower clamping block 200 are fitted together. The upper clamping block 100 and the lower clamping block 200 are formed as a whole by tightening the four bolts 600 to the ends of the two threaded sleeves 300 respectively. At the same time, the grooves 400 of the upper clamping block 100 and the lower clamping block 200 clamp each other to form a receiving groove.

[0023] like Figure 5 As shown, a spring 712 is fixedly connected to one side of the lever 711, and the other end of the spring 712 is fixedly connected to the inner wall of the ring 710.

[0024] In this embodiment, when the device is in its initial state, the spring 712 is in the released state, and at this time, one end of the locking rod 711 passes through the ring 710. When the bolt 600 passes through the limiting frame 720 and is installed with the threaded sleeve 300, it is necessary to pull the locking rod 711 to squeeze the spring 712.

[0025] like Figure 4 and Figure 5 As shown, the vertical cross-section of the limiting frame 720 and the vertical cross-section of the card frame 730 are both hexagonal, and the shape of the surface of the limiting frame 720 matches the overall shape of the inner wall of the card frame 730.

[0026] In this embodiment, when the end of the limiting frame 720 is inserted into the card frame 730, the surface of the limiting frame 720 is in contact with the inner wall of the card frame 730. Therefore, when the end of the limiting frame 720 is engaged with the card frame 730, the limiting frame 720 cannot rotate.

[0027] like Figure 2 As shown, the overall shape of one side of the inner wall of the through hole 500 is hexagonal, and the overall shape of the surface of the threaded sleeve 300 is hexagonal.

[0028] In this embodiment, the size of the vertical cross section of the clamping frame 730 is the same as the size of the hammer cross section of the threaded sleeve 300. When the threaded sleeve 300 is inserted into the through hole 500, the surfaces of both the clamping frame 730 and the threaded sleeve 300 are in contact with the inner wall of the hexagon of the through hole 500, so that neither the clamping frame 730 nor the threaded sleeve 300 can rotate. After the upper clamping block 100 and the lower clamping block 200 are connected by the threaded sleeve 300, when the opposite sides of the upper clamping block 100 and the lower clamping block 200 are in contact, the clamping frames 730 at both ends of the threaded sleeve 300 will abut against the inner walls of the upper clamping block 100 and the lower clamping block 200, respectively.

[0029] Taking the installation of one of the limiting frames 720 and the lower clamping block 200 as an example, when the upper clamping block 100 and the lower clamping block 200 are attached to each other, the limiting frame 720 is inserted through one open end of one of the through holes 500 of the lower clamping block 200. During the insertion process, when the ring 710 and the lower clamping block 200 are pressed together, the end of the limiting frame 720 away from the ring 710 will enter the corresponding clip frame 730 and press against one end of the threaded sleeve 300. After pressing, the bolt 600 is inserted through the limiting frame 720 and the bolt 600 is rotated to tighten the bolt 600 and one end of the threaded sleeve 300.

[0030] like Figure 3 and Figure 4 As shown, the distance between the diagonals of the inner wall of the limiting frame 720 is greater than the diameter of the bolt 600, and the inner diameter of the ring 710 is greater than the diameter of the bolt 600.

[0031] In this embodiment, during the process of the bolt 600 passing through the limiting frame 720 and rotating the bolt 600 to tighten the threaded sleeve 300, there is a small gap between the surface of the bolt 600 and the inner wall of the limiting frame 720, thereby avoiding the limiting frame 720 from affecting the tightening of the bolt 600.

[0032] like Figure 5 As shown, a contact pad 750 is fixedly connected to the other end of the ring 710. The contact pad 750 is a rubber component. When the bolt 600 is tightened, one end of the bolt 600 nut contacts the contact pad 750.

[0033] like Figure 5 As shown, the overall shape of the locking rod 711 is "L" shaped, and the shape of the vertical section of the locking hole 740 matches the shape of the end of the locking rod 711. After the bolt 600 is tightened, one end of the locking rod 711 is aligned with the locking hole 740.

[0034] like Figure 5As shown, a groove is provided on the upper end of the inner wall of the ring 710, and the spring 712 is disposed in the groove. The surface of the locking rod 711 is slidably connected to the inner wall of the groove. During the process of the bolt 600 passing through the limiting frame 720 and tightening, the locking rod 711 is moved into the groove, the spring 712 is compressed, and after the bolt 600 is tightened, the force on the locking rod 711 is released, the spring 712 returns to its original position and drives the locking rod 711 to return to its original position, so that one end of the locking rod 711 enters the locking hole 740.

[0035] Working principle: During installation, the device is positioned so that the upper clamping block 100 and lower clamping block 200 of the two threaded sleeves 300 are inserted into the through holes 500, and the opposite sides of the upper clamping block 100 and lower clamping block 200 are in contact. At this time, the three grooves 400 of the upper clamping block 100 and lower clamping block 200 clamp each other to form three receiving grooves. The receiving grooves are used for the busbar to pass through and fix the fixed busbar. After the opposite sides of the upper clamping block 100 and lower clamping block 200 are in contact, one of the limiting frames 720 is first inserted through one of the through holes 500 and locked into the corresponding locking frame 730. Next, one of the bolts 600 is passed through the limiting frame 720 and tightened to the end of the corresponding threaded sleeve 300. After tightening, the clamping rod 711 automatically engages with the clamping hole 740 to limit the bolt 600. The other three bolts 600 are installed in the same way. When the four bolts 600 are tightened to the two ends of the two threaded sleeves 300 respectively, the upper clamping block 100 and the lower clamping block 200 are fixedly connected to form a busbar clamp, and the bolts 600 are fixed at the same time. The entire busbar clamp forms a ring-shaped square frame structure with the ends connected.

[0036] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model 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 will 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 utility model.

Claims

1. A molded busbar clamp, characterized in that, include: The upper clamping block (100), the lower clamping block (200), and two threaded sleeves (300) are provided. The upper clamping block (100) and the lower clamping block (200) are provided with three grooves (400) at fixed intervals along the length direction on opposite sides. The upper clamping block (100) and the lower clamping block (200) are provided with two through holes (500) in the middle. Bolts (600) are provided in the through holes (500). The upper clamping block (100) and the lower clamping block (200) are fixedly connected to the threaded sleeves (300) by the bolts (600). It also includes a limiting mechanism (700), which includes multiple rings (710). One end of the ring (710) is fixedly connected to a limiting frame (720). Both ends of the threaded sleeve (300) are fixedly connected to a retaining frame (730). A retaining rod (711) is slidably connected to the upper surface of the ring (710). The inner wall of the bolt (600) nut is provided with a retaining hole (740).

2. The busbar clamp molded according to claim 1, characterized in that, A spring (712) is fixedly connected to one side of the lever (711), and the other end of the spring (712) is fixedly connected to the inner wall of the ring (710).

3. The busbar clamp molded according to claim 1, characterized in that, The vertical cross-section of the limiting frame (720) and the vertical cross-section of the card frame (730) are both hexagonal, and the shape of the surface of the limiting frame (720) matches the overall shape of the inner wall of the card frame (730).

4. The molded busbar clamp according to claim 1, characterized in that, The overall shape of one side of the inner wall of the through hole (500) is hexagonal, and the overall shape of the surface of the threaded sleeve (300) is hexagonal.

5. The molded busbar clamp according to claim 1, characterized in that, The distance between the diagonals of the inner wall of the limiting frame (720) is greater than the diameter of the bolt (600), and the inner diameter of the ring (710) is greater than the diameter of the bolt (600).

6. The molded busbar clamp according to claim 1, characterized in that, The other end of the ring (710) is fixedly connected to a contact pad (750), which is a rubber component.

7. The molded busbar clamp according to claim 1, characterized in that, The overall shape of the lever (711) is "L" shaped, and the shape of the vertical cross section of the locking hole (740) matches the shape of the end of the lever (711).

8. The molded busbar clamp according to claim 2, characterized in that, The inner wall of the ring (710) has a groove at the upper end, and the spring (712) is disposed in the groove.

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