CN207518059U - A kind of clamping device of 110KV substation bus bars - Google Patents

Abstract

The utility model provides a clamping device for a 110KV substation busbar. The device includes a porcelain bottle, a column, a clamping mechanism and a straining mechanism. The clamping mechanism includes a bearing, and the bearing includes an inner ring, an outer ring, and a Between the rollers, the outer ring is fixedly connected with the upper end of the column, the inner wall of the inner ring is evenly provided with internal teeth parallel to the busbar, and there are evenly distributed in the inner ring a number of pressure wheels that are pressed against the busbar. The pressing wheel 1 is connected by a short shaft, and the short shaft is fixed with a transmission gear 1 that cooperates with the internal teeth. The pressing wheel 1 is located between the two transmission gears 1, and the peripheral surface of the pressing wheel 1 has a gradient part, the distance between the gradual change part and the axis of the pinch wheel one is greater than the radius of the pinch wheel one, and the transition between the gradual change part and the outer wall of the pinch wheel one is smooth. The utility model has the advantages of firm clamping, allowing displacement of the busbar and the like.

Description

A Clamping Device for 110KV Substation Busbar

technical field

The utility model relates to a clamping device, in particular to a clamping device for a bus bar of a 110KV substation.

Background technique

The tubular busbars in the 110KV substation are moving due to thermal expansion and contraction under the influence of different environments, different climates (such as high temperature and heat, rain, snow and freezing), short-circuit faults near the busbar and busbar hardware faults. Friction will cause the supporting porcelain bottle below to be under greater stress, shorten the service life of the porcelain bottle, and even cause the busbar pillar porcelain bottle to break.

Contents of the invention

The purpose of this utility model is to provide a clamping device for a 110KV substation busbar for the above-mentioned problems existing in the existing technology. The technical problem to be solved by this utility model is how to clamp the busbar without hindering the movement of the busbar axis.

The purpose of this utility model can be achieved through the following technical solutions: a clamping device for a 110KV substation busbar, characterized in that the device includes a porcelain bottle, a column, a clamping mechanism and a strain mechanism, and the clamping mechanism includes a bearing, The bearing includes an inner ring, an outer ring and a roller located between the inner ring and the outer ring, the outer ring is fixedly connected to the upper end of the column, and the inner wall of the inner ring is evenly provided with internal teeth parallel to the generatrix , there are evenly distributed in the inner ring a number of pressure wheels one tightly pressed on the busbar, and the pressure wheels one is connected by a short shaft, and the transmission gear cooperating with the inner teeth is fixedly arranged on the short shaft 1. The pressure wheel 1 is located between the two transmission gears 1. There is a gradual change portion on the peripheral surface of the pressure wheel 1. The distance between the gradual change portion and the axis of the pressure wheel 1 is greater than that of the pressure wheel 1. The radius of wheel one, the smooth transition between the gradual change part and the outer wall of pinch wheel one; when the bus bar radially expands or contracts, the strain mechanism can drive pinch wheel one to rotate, so that pinch wheel one and the busbar Appropriate compression force.

The bus bar is wrapped by the pinch wheel to fix it in the gap between the pinch wheels. If the bus bar moves in the axial direction due to thermal expansion and contraction, the bus bar can roll within a small range under the rolling of the pinch wheel. Move, so as to avoid damage to the porcelain bottle due to stress concentration; the thermal expansion and contraction in the radial direction of the busbar are transmitted to the compression wheel through the strain mechanism, so that the compression wheel can rotate adaptively, and change the pressure of each compression wheel. The gap between them makes the pressing force of the busbar moderate and does not hinder the movement of the busbar axis.

In the above-mentioned clamping device for a 110KV substation busbar, the strain mechanism includes an outer bushing and an inner bushing, the outer peripheral surface of the outer bushing has outer teeth that cooperate with the inner teeth, and the inner shaft The sleeve is fixedly connected with the column, the inner shaft sleeve is evenly opened with a mounting hole penetrating the inner and outer walls of the inner shaft sleeve, a swing arm is inserted in the mounting hole, and a pin is passed between the swing arm and the inner wall of the mounting hole. The shaft is rotatably connected, the inner end of the swing arm has a pressing surface against the outer wall of the busbar, and the outer end of the swing arm is connected to the outer bushing through a tension spring that drives the pressing surface close to the outer wall of the busbar.

The thermal expansion and contraction of the busbar make the swing arm swing around the pin shaft, thereby pushing the outer sleeve to rotate around the axis of the busbar, driving the transmission gear in the inner ring to rotate, changing the position of the gradient part, and adjusting the gap between the pressing wheels , so that the bus bar will not be crushed by the pressing force one, so as not to hinder the main axis of the bus bar from moving between the pressing wheels one.

In this solution, the device can be used to clamp the middle part of the busbar.

In the above-mentioned clamping device for a 110KV substation busbar, the inner wall of the outer bushing is provided with a one-to-one corresponding bar with the swing arm, and the tension spring is connected to the outer end of the swing arm and corresponds to the swing arm. between the side walls of the bar.

In the above-mentioned clamping device for a 110KV substation busbar, there are four pressing wheels one.

In the above-mentioned clamping device for a 110KV substation busbar, the inner wall of the outer sleeve is provided with a limit bar corresponding to the swing arm one by one, and the limit bar and the stop bar are respectively located on the corresponding swing arm. sides.

The limit bar is used to prevent the inclination angle of the swing arm from exceeding the radial line, so as not to affect the installation.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the clamping device.

Fig. 2 is a structural schematic diagram of the strain mechanism.

Fig. 3 is a structural schematic diagram of the pressure wheel one.

In the figure, 1, porcelain bottle; 2, column; 31, inner ring; 32, outer ring; 33, roller; 41, pressure wheel one; 42, transmission gear one; 51, pressure wheel two; 52, transmission gear 2; 6. Gradient part; 71. Outer bushing; 72. Inner bushing; 73. Mounting hole; 74. Stop bar; 8. Swing arm; 81. Compression surface; 82. Extension spring; 83. Limiting bar ; a, busbar.

Detailed ways

The following are specific embodiments of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model is not limited to these embodiments.

Implementation mode one:

As shown in Fig. 1 and Fig. 3, this fixing device comprises porcelain bottle 1, column 2, clamping mechanism and strain mechanism, and clamping mechanism comprises a bearing, and bearing comprises inner ring 31, outer ring 32 and is positioned at inner ring 31 and outer ring The roller 33 between 32, the outer ring 32 is fixedly connected with the upper end of the column 2, the inner wall of the inner ring 31 is evenly provided with internal teeth parallel to the bus bar a, and several inner teeth are evenly distributed in the inner ring 31 and pressed against the bus bar The pressing wheel one 41 on a, the pressing wheel one 41 is connected by a short shaft, the transmission gear one 42 that cooperates with the internal teeth is fixedly arranged on the short shaft, and the pressing wheel one 41 is located between the two transmission gears one 42 Between, there is a gradual change portion 6 on the peripheral surface of the pressure wheel one 41, the distance between the gradual change portion 6 and the axis of the pressure wheel one 41 is greater than the radius of the pressure wheel one 41, the gradual change portion 6 and the pressure wheel one 41 There is a smooth transition between the outer walls; when the busbar a radially expands or contracts, the strain mechanism can drive the compression wheel 41 to rotate, so that the pressing force of the compression wheel 41 and the busbar a is suitable.

The bus bar a is wrapped by the pinch wheel 41 so that it is fixed in the gap between the pinch wheels 41. If the bus bar a moves in the axial direction due to thermal expansion and contraction, the bus bar a can be moved between the pinch wheels 41. Rolling and moving within a small range, so as to avoid damage to the porcelain bottle 1 due to stress concentration; the thermal expansion and contraction in the radial direction of the busbar a is transmitted to the compression wheel 41 through the strain mechanism, so that the compression wheel 1 41 is adaptive Rotate to change the gap between the pressing wheels 41, so that the pressing force of the busbar a is moderate and does not hinder the movement of the busbar a in the axial direction.

As shown in Figure 2, the strain mechanism includes an outer shaft sleeve 71 and an inner shaft sleeve 72, the outer peripheral surface of the outer shaft sleeve 71 has external teeth that cooperate with the inner teeth, the inner shaft sleeve 72 is fixedly connected with the column 2, and the inner shaft sleeve 72 is uniformly provided with a mounting hole 73 that runs through the inner and outer walls of the inner shaft sleeve 72, and a swing arm 8 is inserted in the mounting hole 73. The inner end has a pressing surface 81 that abuts against the outer wall of the busbar a, and the outer end of the swing arm 8 is connected to the outer bushing 71 through a tension spring 82 that drives the pressing surface 81 to the outer wall of the busbar a.

The thermal expansion and contraction of the busbar a causes the swing arm 8 to swing around the pin shaft, thereby pushing the outer bushing 71 to rotate around the axis of the busbar a, driving the transmission gear 142 located in the inner ring 31 to rotate, changing the position of the gradient part 6, and adjusting each pressure The gap between the pinch wheels-41 prevents the bus bar a from being crushed to death by the compressing force, so as not to hinder the main axis of the bus bar a from moving between each pinch wheel-41.

In this solution, the device can be used to clamp the middle part of the busbar a.

The inner wall of the outer bushing 71 is provided with a bar 74 corresponding to the swing arm 8 one by one, and the tension spring 82 is connected between the outer end of the swing arm 8 and the side wall of the bar 74 corresponding to the swing arm 8; One 41 has four; Compression wheel two 51 has four.

The inner wall of the outer bushing 71 is provided with a limit bar 83 corresponding to the swing arm 8 one by one, and the limit bar 83 and the stop bar 74 are respectively located on both sides of the corresponding swing arm 8; the limit bar 83 is used to prevent the swing arm from The inclination angle of 8 exceeds radial line, so as not to affect installation.

Implementation mode two:

As shown in Fig. 1 and Fig. 3, this fixing device comprises porcelain bottle 1, column 2, clamping mechanism and strain mechanism, and clamping mechanism comprises a bearing, and bearing comprises inner ring 31, outer ring 32 and is positioned at inner ring 31 and outer ring The roller 33 between 32, the outer ring 32 is fixedly connected with the upper end of the column 2, the inner wall of the inner ring 31 is evenly provided with internal teeth parallel to the bus bar a, and several inner teeth are evenly distributed in the inner ring 31 and pressed against the bus bar The pressing wheel one 41 on a, the pressing wheel one 41 is connected by a short shaft, the transmission gear one 42 that cooperates with the internal teeth is fixedly arranged on the short shaft, and the pressing wheel one 41 is located between the two transmission gears one 42 Between, there is a gradual change portion 6 on the peripheral surface of the pressure wheel one 41, the distance between the gradual change portion 6 and the axis of the pressure wheel one 41 is greater than the radius of the pressure wheel one 41, the gradual change portion 6 and the pressure wheel one 41 There is a smooth transition between the outer walls of the inner ring 31; there are evenly distributed in the inner ring 31 a number of pressure wheels 51 that are pressed tightly on the busbar a, and the pressure wheels 51 are connected with the short shaft, and the short shaft is fixedly provided with The second transmission gear 52, the second pinch wheel 51 is located between the two two pinion gears 52, the peripheral surface of the second pinch wheel 51 has a gradual change portion 6, the distance between the gradual change portion 6 and the axis of the second pinch wheel 51 The distance is greater than the radius of the pinch wheel 2 51, and there is a smooth transition between the gradual change portion 6 and the outer wall of the pinch wheel 2 51; when the busbar a radially expands or contracts, the strain mechanism can drive the pinch wheel 2 51 to rotate, so that the pinch wheel Wheel one 41 and pinch wheel two 51 are suitable for the pressing force of busbar a; the gradual change portion 6 on the pinch wheel one 41 is opposite to the direction of the gradient portion 6 on the pinch wheel two 51 .

In this scheme, this device can be used for the end of busbar a, and the gradual change part 6 on the first pressing wheel 41 and the sputtering part on the second pressing wheel 51 will block the busbar a, so that the busbar a is not allowed to move along the axis Moving in the inner ring 31, the pressing force is more reliable, and the gap between each pressing wheel 1 41 and each pressing wheel 2 51 can still be controlled by the strain mechanism.

As shown in Figure 2, the strain mechanism includes an outer shaft sleeve 71 and an inner shaft sleeve 72, the outer peripheral surface of the outer shaft sleeve 71 has external teeth that cooperate with the inner teeth, the inner shaft sleeve 72 is fixedly connected with the column 2, and the inner shaft sleeve 72 is uniformly provided with a mounting hole 73 that runs through the inner and outer walls of the inner shaft sleeve 72, and a swing arm 8 is inserted in the mounting hole 73. The inner end has a pressing surface 81 that is close to the outer wall of the bus bar a, and the outer end of the swing arm 8 is connected to the outer bushing 71 through a tension spring 82 that drives the pressing surface 81 to the outer wall of the bus bar a; the thermal expansion of the bus bar a The cold shrinkage makes the swing arm 8 swing around the pin shaft, thereby pushing the outer bushing 71 to rotate around the axis of the busbar a, driving the transmission gear 142 located in the inner ring 31 to rotate, changing the position of the gradual change part 6, and adjusting each pressing wheel 141 The gap between makes busbar a unlikely to be crushed to death by pressing force, so as not to hinder busbar a to want the axis to move between each pressing wheel-41. In this solution, the device can be used to clamp the middle part of the busbar a.

The specific embodiments described herein are only examples to illustrate the spirit of the present invention. Those skilled in the technical field to which the utility model belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the utility model or go beyond the appended claims defined range.

Claims (5)

1. A clamping device for a 110KV substation busbar (a), characterized in that the device comprises a porcelain bottle (1), a column (2), a clamping mechanism and a strain mechanism, and the clamping mechanism comprises a bearing, and the The bearing comprises an inner ring (31), an outer ring (32) and a roller (33) located between the inner ring (31) and the outer ring (32), and the outer ring (32) is fixed to the upper end of the column (2) connected, the inner wall of the inner ring (31) is evenly provided with internal teeth parallel to the busbar (a), and there are evenly distributed in the inner ring (31) a number of pressing teeth that are pressed tightly on the busbar (a). Wheel one (41), the pressure wheel one (41) is connected by a short shaft, the transmission gear one (42) which is fixedly arranged on the short shaft and the internal teeth, and the pressure wheel one (41 ) is located between the two transmission gears one (42), the peripheral surface of the pressure wheel one (41) has a gradual change portion (6), the gradual change portion (6) and the pressure wheel one (41) The distance between the axes is greater than the radius of the pinch wheel one (41), and the transition between the gradual change portion (6) and the outer wall of the pinch wheel one (41) is smooth; when the generatrix (a) expands or contracts radially, The strain mechanism can drive the first pressing wheel (41) to rotate, so that the pressing force between the first pressing wheel (41) and the busbar (a) is suitable. 2. A clamping device for a 110KV substation busbar according to claim 1, characterized in that, the strain mechanism includes an outer bushing (71) and an inner bushing (72), and the outer bushing (71) The outer peripheral surface has outer teeth that cooperate with the inner teeth, the inner bushing (72) is fixedly connected with the column (2), and the inner bushing (72) is evenly opened with a The mounting hole (73), the mounting hole (73) is inserted with a swing arm (8), the swing arm (8) is connected to the inner wall of the mounting hole (73) through a pin rotation, the The inner end of the swing arm (8) has a pressing surface (81) that abuts against the outer wall of the busbar (a), and a driving pressing surface is passed between the outer end of the swing arm (8) and the outer shaft sleeve (71). (81) link to each other to the extension spring (82) that busbar (a) outer wall approaches. 3. A clamping device for a 110KV substation busbar according to claim 2, characterized in that, the inner wall of the outer bushing (71) is provided with a retaining strip (74) corresponding to the swing arm (8) one-to-one , the tension spring (82) is connected between the outer end of the swing arm (8) and the side wall of the bar (74) corresponding to the swing arm (8). 4. The clamping device for a 110KV substation busbar according to claim 3, characterized in that there are four pressing wheels one (41). 5. A clamping device for a 110KV substation busbar according to claim 4, characterized in that, the inner wall of the outer bushing (71) is provided with a limit strip (83) corresponding to the swing arm (8) one-to-one ), the limit bar (83) and the retaining bar (74) are respectively located on both sides of the corresponding swing arm (8).