A mechanical arm for assembling a porcelain column type circuit breaker

Abstract

The application relates to a mechanical arm for assembling a porcelain column type circuit breaker, which comprises a base, the base comprises a walking support, walking rollers are installed on the walking support, and a grabbing assembly is installed on the base, the grabbing assembly comprises a grabbing support and a pair of grabbing clamps installed on the grabbing support, wherein the grabbing support is driven to move up and down by a lifting mechanism installed on the walking support, and the two grabbing clamps are driven to move close to or away from each other by a clamping mechanism installed on the grabbing support, so that the porcelain column is grabbed or released. The mechanical arm has the following advantages: the base is combined with the grabbing assembly, the porcelain column is grabbed and clamped by the grabbing assembly, the porcelain column is lifted and horizontally moved by the cooperation of the walking trolley, the porcelain column is limited by the two grabbing clamps during the movement, the phenomenon that the porcelain column swings is avoided, the stable movement of the porcelain column is ensured, and a good foundation is provided for the automatic assembly of the circuit breaker.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of circuit breaker processing, in particular to a mechanical arm for assembling a porcelain column type circuit breaker. BACKGROUND

[0002] High-voltage circuit breakers (or high-voltage switches) not only can cut off or close the no-load current and load current in high-voltage circuits, but also can cut off the overload current and short-circuit current when a system fault occurs through the action of a relay protection device, and have a quite perfect arc extinguishing structure and sufficient breaking capacity. High-voltage circuit breakers can be divided into porcelain column type and tank type according to the structure type. The tank type circuit breaker is suitable for high seismic intensity, high cold and high altitude, and seriously polluted areas. The porcelain column type is suitable for general areas.

[0003] The porcelain column type circuit breaker is a circuit breaker applied in high-voltage power grids, and generally includes a base, a porcelain column installed on the base, and an operating mechanism installed in the base. In the production process of the porcelain column type circuit breaker, the porcelain column needs to be assembled, that is, the porcelain column needs to be installed on the base. This process inevitably involves the movement of the porcelain column. Due to the structure of the circuit breaker, the porcelain column type circuit breaker has a large size and a long length, and the corresponding porcelain column also has a large size and a long length. When the porcelain column is moved, it needs to be moved by hoisting. Since the porcelain column has a large size, it brings great inconvenience to carrying and hoisting, especially during hoisting. The porcelain column is prone to damage. In the conventional hoisting method, the top end of the porcelain column is first hoisted by a hoisting device. As the hoisting height increases, the bottom end of the porcelain column will roll and slide on the ground, which is easy to collide with surrounding objects. As the hoisting height further increases, the bottom end of the porcelain column is hoisted and suspended, and the entire porcelain column will swing in the air, which poses a risk of breaking and damaging the circuit breaker. At the same time, since the porcelain column type circuit breaker has a large size, it is very laborious for workers to manually protect it, and it is difficult to control, which brings great difficulty to hoisting and carrying.

[0004] In view of the above phenomenon, a porcelain column type circuit breaker hoisting tool is proposed in patent CN203079510U, which includes a bent U-shaped bend pipe. The two ends of the U-shaped bend pipe are respectively welded and fixed with a connecting plate. The connecting plate is provided with a mounting hole for connecting the circuit breaker. During hoisting, the bolt is connected with one end of the circuit breaker by penetrating the mounting hole. The worker fixes the other end of the circuit breaker which is not hoisted by stepping on the middle position of the U-shaped pipe to prevent the circuit breaker from rolling and sliding on the ground. After the circuit breaker is hoisted to a certain distance from the ground, the tool is separated from the circuit breaker to avoid the problem of damaging the circuit breaker due to the swinging of the circuit breaker in the air.

[0005] The above-mentioned lifting tooling only plays a protective role when lifting the porcelain column when it leaves the ground. After lifting, the porcelain column still adopts the traditional lifting scheme, that is, the lifting device is still used to lift one end of the porcelain column, and the other end of the porcelain column naturally hangs down under the action of its own weight. This movement method will still cause the porcelain column to swing in the air during the movement, and there will still be adverse phenomena such as the porcelain column being broken, which will affect the assembly of the porcelain column. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a mechanical arm for assembling a porcelain column type circuit breaker, which can clamp a large porcelain column type circuit breaker and facilitate the lifting and movement of the porcelain column type circuit breaker.

[0007] In order to solve the above technical problems, the technical solution of the present invention is: a mechanical arm for assembling a porcelain column type circuit breaker, the innovation of which is that it includes:

[0008] A base, the base including a walking frame, on which walking rollers are mounted;

[0009] A grabbing assembly includes a grabbing bracket and a pair of grabbing clamps installed on the grabbing bracket, wherein the grabbing bracket is driven to move up and down by a lifting mechanism installed on the walking bracket, and the two grabbing clamps are driven to move closer to or away from each other by a clamping mechanism installed on the grabbing bracket, thereby achieving the grabbing or release of the porcelain column.

[0010] Furthermore, the base includes a walking bracket and a walking roller. The walking bracket is rectangular in shape. A pair of walking roller groups are installed on both sides of the long axis direction of the top of the walking bracket. Each pair of walking roller groups consists of two walking rollers distributed on both sides of the width direction of the walking bracket.

[0011] The grabbing assembly includes a grabbing bracket and a grabbing splint. The grabbing bracket is a rectangular bracket. There is a pair of grabbing splints, which are respectively mounted on the grabbing bracket through a splint mounting seat. The splint mounting seats are mounted on the grabbing bracket through a clamping mechanism and are driven by the clamping mechanism to move closer or farther away from each other, thereby driving the two grabbing splints to move closer or farther away.

[0012] The clamping mechanism is as follows: a pair of clamping guide rails are respectively installed on both sides of the bottom end of the grabbing bracket, and the two pairs of clamping guide rails correspond to the two clamping plate mounting seats one-to-one. Each pair of clamping guide rails is composed of two clamping guide rails distributed in parallel along the width direction of the grabbing bracket, and the clamping guide rails extend along the long axis direction of the grabbing bracket. A clamping slider corresponding to the two clamping guide rails is also installed on the top of the clamping plate mounting seat. The clamping plate mounting seat is driven by a clamping cylinder installed on the grabbing bracket to reciprocate along the clamping guide rails.

[0013] The grabbing splint is a composite plate formed by connecting a central plate and oblique side plates distributed on both sides of the central plate. The central plate and the oblique side plates extend in the vertical direction. The oblique side plates are obliquely connected to the side ends of the central plate, and the angle formed at the connection between the oblique side plates and the central plate is an obtuse angle. A clamping pad is also installed on the inner wall of the two oblique side plates. The inner wall of the clamping pad is in an arc shape. A plurality of clamping positioning grooves are opened on the inner wall of the clamping pad and are distributed sequentially from top to bottom, and each clamping positioning groove corresponds one by one to the shed skirt of the porcelain sleeve.

[0014] The lifting mechanism includes an electric hoist installed on a traveling bracket, which is driven by a motor installed on the traveling bracket. A lifting ring that matches the electric hoist is also installed on the top of the grabbing bracket. The hook of the electric hoist is buckled into the lifting ring, thereby pulling the grabbing bracket up and down.

[0015] Furthermore, a guide mechanism is provided between the walking bracket and the grabbing bracket, and the guide mechanism is: four vertically arranged limit guide rods are installed at the bottom end of the walking bracket, and the four limit guide rods are respectively located around the grabbing bracket, and a guide limit ring is also installed at the top of the grabbing bracket. The diameter of the guide limit ring is larger than the width of the grabbing bracket and smaller than the length of the grabbing bracket, and the outer wall of the guide limit ring is in contact with the inner walls of the four limit guide rods.

[0016] Furthermore, an adjustment mechanism is provided between the limiting guide rod and the traveling bracket, and the adjustment mechanism is as follows: a pair of adjustment guide rails are respectively installed at the bottom ends on both sides of the long axis direction of the traveling bracket, and each pair of adjustment guide rails is composed of two adjustment guide rails distributed on both sides of the width direction of the traveling bracket. An adjustment slider matching the adjustment guide rail is installed at the top of the limiting guide rod, and the limiting guide rod is driven by an adjustment cylinder installed on the traveling bracket to reciprocate along the extension direction of the adjustment guide rail, thereby realizing the adjustment of the distance between the two limiting guide rods of the same pair.

[0017] Furthermore, the grabbing splint and the splint mounting seat are movably connected, and the connection structure is as follows:

[0018] A gap is left between the grabbing splint and the splint mounting seat;

[0019] A mounting plate is installed at the middle position of the outer side wall of the grabbing splint, and a through hole for the mounting plate to pass through is opened on the splint mounting seat, and the mounting plate is connected to the splint mounting seat through a mounting shaft after passing through the through hole on the splint mounting seat, and a through hole for the mounting shaft to pass through is opened on the mounting plate, and the mounting plate and the mounting shaft are movably connected, and shaft mounting plates are respectively provided on both sides of the through hole on the splint mounting seat, and both sides of the mounting shaft are respectively fixed to the two shaft mounting plates, so that the grabbing splint is hinged on the splint mounting seat;

[0020] An upper limit bolt is also installed on the upper end of the clamping plate mounting seat. After the upper limit bolt passes through the clamping plate mounting seat horizontally, the top end of the upper limit bolt extends into the gap between the grabbing clamping plate and the clamping plate mounting seat. A threaded through hole that matches the upper limit bolt is opened on the clamping plate mounting seat.

[0021] A lower limit bolt is also installed at the bottom end of the splint mounting seat. After the lower limit bolt passes through the splint mounting seat horizontally, the top end of the lower limit bolt extends into the gap between the grabbing splint and the splint mounting seat. A threaded through hole matching the lower limit bolt is opened on the splint mounting seat.

[0022] Furthermore, a pair of arc-shaped holding plates are provided on the clamping plate mounting seat above the grabbing clamping plate. The two arc-shaped holding plates are driven by horizontal cylinders installed on the clamping plate mounting seat to move closer to or away from each other, thereby tightening or loosening the top of the porcelain column.

[0023] Furthermore, the travel roller includes a roller seat, the bottom end of which is hinged to the travel bracket, and a plurality of rollers distributed in parallel are installed on the roller seat, and each roller is arranged in an arc shape on the roller seat.

[0024] The advantages of the present invention are: in the present invention, the base is combined with the grabbing assembly, the grabbing assembly is used to realize the grabbing and clamping of the porcelain column, and then the cooperation of the walking trolley is used to realize the lifting and horizontal movement of the porcelain column. During the movement, the two grabbing clamps are used to limit the porcelain column, avoiding the swinging phenomenon of the porcelain column, ensuring the stable movement of the porcelain column, and providing a good foundation for the subsequent automatic assembly of the circuit breaker.

[0025] The design of the grabbing assembly uses the cooperation of two grabbing splints to achieve the grabbing of the porcelain column. In this structure, the grabbing splint adopts a combined plate structure composed of a center plate and an inclined side plate, so that when the two grabbing splints are closed, a polygonal cavity for grabbing the porcelain column can be formed, and then combined with the clamping positioning grooves on the clamping pad that correspond one-to-one with the umbrella skirt of the porcelain column to achieve the positioning clamping of the porcelain column, avoiding the porcelain column from moving back and forth relative to the grabbing splint after clamping, and ensuring the stability of the porcelain column after clamping.

[0026] The guide mechanism arranged between the walking bracket and the grabbing bracket utilizes the mutual cooperation between the limit guide rod and the guide limit ring to play a guiding and limiting role in the up and down lifting of the grabbing bracket, thereby avoiding the swinging of the grabbing bracket when the electric hoist is used to pull the grabbing bracket for lifting or horizontal movement, thereby ensuring the stable movement of the grabbing bracket and thus ensuring the stable movement of the porcelain column.

[0027] The design of the adjustment mechanism between the limit guide rod and the walking bracket uses the mutual cooperation of the adjustment guide rail, the adjustment slider, and the adjustment cylinder to adjust the spacing between the limit guide rods, so that the limit guide rod can cooperate well with the guide limit ring, providing a basis for the subsequent stable movement of the grabbing bracket.

[0028] The connection between the grabbing splint and the splint mounting seat is achieved by leaving a gap between the grabbing splint and the splint mounting seat, and then coordinating the hinge between the middle position of the grabbing splint and the splint mounting seat, as well as the upper limit bolt at the upper end of the splint mounting seat and the lower limit bolt at the bottom end, so that the amplitude of the grabbing splint can be adjusted within a certain range, making it convenient for the grabbing splint to cooperate with the porcelain column and realize the grabbing of the porcelain column.

[0029] The design of the curved holding plate is to hold and fix the top of the porcelain column.

[0030] The design of the walking roller adopts the cooperation of an articulated roller seat and several rollers distributed in parallel in an arc shape, so that the walking roller can swing relative to the walking bracket, so that the subsequent walking bracket can smoothly cooperate with the guide rail to achieve smooth horizontal movement of the walking bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Figure 1 Schematic diagram of a mechanical arm for assembling a porcelain column circuit breaker according to the present invention.

[0033] Figure 2 Schematic diagram of the base in the present invention.

[0034] Figure 3 It is a front view of the base in the present invention.

[0035] Figure 4 It is a side view of the base in the present invention.

[0036] Figure 5 It is a top view of the base in the present invention.

[0037] Figure 6 Schematic diagram of the grabbing component in the present invention.

[0038] Figure 7 It is a front view of the grabbing assembly in the present invention.

[0039] Figure 8 It is a side view of the grabbing assembly of the present invention.

[0040] Figure 9 It is a top view of the grabbing assembly in the present invention.

[0041] Figure 10 This is a schematic diagram of the state in which the porcelain column is not grasped in the present invention.

[0042] Figure 11 It is a schematic diagram of the state of grabbing the porcelain column in the present invention. DETAILED DESCRIPTION

[0043] The following embodiments may enable those skilled in the art to more fully understand the present invention, but the present invention is not limited to the scope of the embodiments.

[0044] like Figures 1-11 The robot arm shown is for assembling a porcelain column type circuit breaker and includes a base 1 and a grabbing assembly 2 .

[0045] like Figures 2-5 As shown in the schematic diagram, the base 1 includes a walking bracket 101, which is a rectangular frame structure formed by welding a number of horizontal bars and vertical bars together. A pair of walking roller groups are installed on both sides of the long axis direction of the top of the walking bracket 101. Each pair of walking roller groups consists of two walking rollers distributed on both sides of the width direction of the walking bracket 101.

[0046] The travel rollers include a roller seat 102, the bottom end of which is hingedly connected to the travel frame 101. Several rollers 103 are mounted on the roller seat 102 in parallel. There are two sets of rollers, one on each side of the roller seat 102, and the rollers 103 in each set are arranged in an arc shape on the roller seat 102. The design of the travel rollers uses the articulated roller seat 102 and the several rollers 103 arranged in parallel in an arc shape to enable the travel rollers to swing relative to the travel frame 101, so that the travel frame 101 can subsequently smoothly dock with the guide rail, achieving smooth horizontal movement of the travel frame 101.

[0047] like Figures 6-9 As can be seen from the schematic diagram, the grabbing assembly 2 includes a grabbing bracket 201 and a pair of grabbing clamps 202 mounted on the grabbing bracket 201 .

[0048] The grabbing support 201 is a rectangular support formed by welding a plurality of horizontal rods and vertical rods together. The grabbing support 201 is driven to move up and down by a lifting mechanism installed on the walking support 101. The lifting mechanism comprises an electric hoist 104 installed on the walking support 101. The electric hoist 104 is fixed on the walking support 101 by a hoist mounting support 106. The electric hoist 104 is driven to work by a motor 105 installed on the walking support 101. A lifting ring 203 cooperating with the electric hoist 104 is also installed on the top end of the grabbing support 201. The hook of the electric hoist 104 is buckled into the lifting ring 203, thereby pulling the grabbing support 201 to move up and down.

[0049] A guide mechanism is also arranged between the walking support 101 and the grabbing support 201. The guide mechanism comprises four vertical limiting guide rods 107 installed on the bottom end of the walking support 101 and located around the grabbing support 201. A guide limiting ring 204 is also installed on the top end of the grabbing support 201. The guide limiting ring 204 comprises two annular guide plates distributed vertically. The two annular guide plates are connected by a plurality of vertical connecting rods. The upper and lower sides of the connecting rods are welded and fixed with the two annular guide plates, thereby forming the guide limiting ring 204. The lower annular guide plate of the guide limiting ring 204 is directly fixed on the top end of the grabbing support 201. The diameter of the guide limiting ring 204 is greater than the width of the grabbing support 201, and the diameter of the guide limiting ring 204 is less than the length of the grabbing support 201. The outer wall of the guide limiting ring 204 is in close contact with the inner wall of the four limiting guide rods 107, thereby guiding and limiting the up and down movement of the guide limiting ring 204, and achieving the guiding and limiting of the grabbing support 201. The guide mechanism arranged between the walking support 101 and the grabbing support 201 guides and limits the up and down movement of the grabbing support 201 by the cooperation between the limiting guide rods 107 and the guide limiting ring 204, thereby avoiding the swinging of the grabbing support 201 when the electric hoist 104 pulls the grabbing support 201 to move up and down or horizontally, ensuring the stable movement of the grabbing support 201 and the porcelain column. Since the electric hoist 104 hoists the workpiece by the steel wire rope, the steel wire rope itself has uncertainty, i.e. the workpiece will swing when hoisted and moved. Therefore, the swinging phenomenon is eliminated by adding the limiting guide rods 107 and the guide limiting ring 204, achieving the stable movement of the grabbing support and the porcelain column.

[0050] An adjustment mechanism is also provided between the limiting guide rod 107 and the walking bracket 101. The adjustment mechanism is as follows: a pair of adjustment guide rails are respectively installed at the bottom ends on both sides of the long axis direction of the walking bracket 101, and each pair of adjustment guide rails is composed of two adjustment guide rails 108 distributed on both sides of the width direction of the walking bracket. An adjustment slider 109 matching the adjustment guide rail 108 is installed at the top of the limiting guide rod 107. The limiting guide rod 107 is driven by the adjustment cylinder 110 installed on the bottom end of the walking bracket 101 to reciprocate along the extension direction of the adjustment guide rail 108, thereby realizing the adjustment of the distance between the two limiting guide rods 107 of the same pair. The tail end of the adjusting cylinder 110 is hinged to the walking bracket 101, and the top end of the piston rod of the adjusting cylinder 110 is hinged to the adjusting slider 109. The design of the adjustment mechanism between the limit guide rod 107 and the walking bracket 101 utilizes the mutual cooperation of the adjustment guide rail 108, the adjustment slider 109, and the adjustment cylinder 110 to adjust and change the spacing between the limit guide rods 107, so that the limit guide rod 107 can cooperate well with the guide limit ring 204, providing a basis for the subsequent stable movement of the grabbing bracket 201.

[0051] There is a pair of grabbing splints 202, which are combined plates connected by a center plate 2021 and oblique side plates 2022 distributed on both sides of the center plate 2021. The center plate 2021 and the oblique side plates 2022 are both rectangular plates. The center plate 2021 and the oblique side plates extend in the vertical direction. The oblique side plates 2022 are obliquely connected to the side ends of the center plate 2021. The inclination direction of the oblique side plates 2022 is gradually inclined toward the other grabbing splint 202 from the connection between the oblique side plates 2022 and the center plate 2021, and the angle formed by the connection between the oblique side plates 2022 and the center plate 2021 is an obtuse angle, so that when the two grabbing splints 202 are closed, a hexagonal cavity for clamping porcelain columns can be formed.

[0052] A clamping pad 2023 is also installed on the inner wall of the two inclined side plates 2022. The clamping pad 2023 is also a rectangular plate. The inner wall of the clamping pad 2023 is arc-shaped. This design enables better cooperation with the porcelain column when clamping the porcelain column. Several clamping positioning grooves 2024 are distributed from top to bottom on the inner wall of the clamping pad 2023, and each clamping positioning groove 2024 corresponds one by one to the umbrella skirt of the porcelain sleeve. The design of the grabbing assembly adopts the cooperation of two grabbing splints 202 to realize the grabbing of the porcelain column. In this structure, the grabbing splint 202 adopts a combined plate structure formed by connecting a center plate 2021 and an inclined side plate 2022, so that when the two grabbing splints 202 are closed, a polygonal cavity for grabbing the porcelain column can be formed, and then the clamping positioning groove 2024 on the clamping pad 2023 corresponding to the umbrella skirt of the porcelain column can be used to realize the positioning and clamping of the porcelain column, thereby avoiding the porcelain column from moving back and forth relative to the grabbing splint after clamping, and ensuring the stability of the porcelain column after clamping.

[0053] The two grabbing splints 202 are respectively installed on the grabbing bracket 201 through a splint mounting seat 205. The splint mounting seat 205 is installed on the grabbing bracket 201 through a clamping mechanism, and the splint mounting seat 205 is driven by the clamping mechanism to move closer or farther away from each other, thereby driving the two grabbing splints 202 closer or farther away, thereby achieving the grabbing or release of the porcelain column.

[0054] The clamping mechanism is as follows: a pair of clamping rails are installed on both sides of the bottom end of the grabbing bracket 201, and the two pairs of clamping rails correspond one-to-one to the two clamping plate mounting seats 205 respectively. Each pair of clamping rails is composed of two clamping rails 206 distributed side by side along the width direction of the grabbing bracket 201. The clamping rails 206 are directly fixed on the bottom end surface of the grabbing bracket 201, and the clamping rails 206 extend along the long axis direction of the grabbing bracket 201. A clamping slider 207 corresponding to the two clamping rails 206 is also installed on the top of the clamping plate mounting seat 205. The clamping plate mounting seat 205 is driven by the clamping cylinder installed on the grabbing bracket 201 to move back and forth along the long axis direction of the clamping rails 206, thereby realizing the two grabbing clamps 202 approaching or moving away from each other.

[0055] The grabbing splint 202 and the splint mounting seat 205 are movably connected, and the connection structure is as follows:

[0056] There is a gap between the central plate 2022 of the grabbing splint 202 and the splint mounting seat 205 , and the existence of the gap provides a basis for the subsequent grabbing splint 202 to swing to a certain extent.

[0057] A mounting plate 208 is installed in the middle position of the outer wall of the center plate 2022 of the grabbing splint 202. The mounting plate 208 is an ear plate. A through hole is opened on the splint mounting seat 205 for the mounting plate 208 to pass through. After passing through the through hole on the splint mounting seat 205, the mounting plate 208 is connected to the splint mounting seat 205 through a mounting shaft 209. A through hole is opened on the mounting plate 208 for the mounting shaft 209 to pass through, and the mounting plate 208 and the mounting shaft 209 are movably connected. Axle mounting plates 210 are also provided on both sides of the through hole on the splint mounting seat 205. The shaft mounting plates 210 are also ear plates. The shaft mounting plates 210 are directly fixed on the splint mounting seat 205, and the two sides of the mounting shaft 209 are respectively fixed on the two shaft mounting plates 210, thereby realizing the hinge between the grabbing splint 202 and the splint mounting seat 205.

[0058] An upper limit bolt 211 is also installed at the upper end of the splint mounting seat 205. After the upper limit bolt 211 passes horizontally through the splint mounting seat 205, the top end of the upper limit bolt 211 extends into the gap between the grabbing splint 202 and the splint mounting seat 205, and the upper limit bolt 211 rests on the upper side wall of the center plate 2021 of the grabbing splint 202. A threaded through hole is opened on the splint mounting seat 205 for the upper limit bolt 211 to pass through and threadedly engage.

[0059] A lower limit bolt 212 is also installed at the bottom end of the splint mounting seat 205. After the lower limit bolt 212 passes through the splint mounting seat 205 horizontally, the top end of the lower limit bolt 212 extends into the gap between the grabbing splint 202 and the splint mounting seat 205, and the lower limit bolt 212 rests on the lower side wall of the new version 2021 of the grabbing splint 202. A threaded through hole is opened on the splint mounting seat 205 for the lower limit bolt 212 to pass through and threadedly engage with. The connection between the grabbing splint 202 and the splint mounting seat 205 is achieved by leaving a gap between the grabbing splint 202 and the splint mounting seat 205, and then coordinating the hinge between the middle position of the grabbing splint 202 and the splint mounting seat 205, as well as the design of the upper limit bolt 211 at the upper end and the lower limit bolt 212 at the bottom end of the splint mounting seat 205, so that the amplitude of the grabbing splint 202 can be adjusted within a certain range, making it convenient for the grabbing splint 202 to cooperate with the porcelain column and realize the grabbing of the porcelain column.

[0060] When adjusting the vertical amplitude of the grabbing splint 202, the upper limit bolt 211 and the lower limit bolt 212 are rotated respectively to control the length of the upper limit bolt 211 and the lower limit bolt 212 extending between the grabbing splint 202 and the splint mounting seat 205. By changing the different lengths of the upper limit bolt 211 and the lower limit bolt 212 extending into the gap, the vertical amplitude of the grabbing splint 202 is adjusted, so that the grabbing splint 202 can achieve a certain inclination, which facilitates the subsequent cooperation between the grabbing splint 202 and the porcelain column to achieve the grabbing of the porcelain column.

[0061] A pair of curved holding plates 213 are also provided on the plate mounting base 205 above the grabbing plate 202. These two curved holding plates 213 are driven toward or away from each other by horizontal cylinders 214 mounted on the plate mounting base 205, thereby tightening or loosening the top of the porcelain column. The curved holding plates 213 are designed to secure the top of the porcelain column. Porcelain columns typically have flanges on both the top and bottom, which are metal components. Therefore, directly securing the top of the porcelain column with the holding plates does not cause any damage to the metal components and reduces the clamping force of the grabbing plates on the porcelain column's sheds. Since the porcelain column sheds are made of porcelain, reducing the clamping force prevents damage to the sheds.

[0062] Working principle: When the mechanical arm of the present invention is used to grab the porcelain column, first, the grabbing assembly moves down along the limiting guide rod 107 under the action of the electric hoist 104 until the grabbing assembly moves to the grabbing position. The two clamping plate mounting seats 205 are driven to move closer to each other by the two clamping cylinders, so that the two grabbing clamps 202 are used to grab the porcelain sleeve. When grabbing, the umbrella skirt structure of the porcelain sleeve is embedded in the clamping positioning groove 2024 on the clamping pad 2023 in a one-to-one correspondence. At the same time, the two arc-shaped holding plates 213 are driven to move closer to each other by the two horizontal cylinders 214, and the two arc-shaped holding plates 213 are used to clamp the flange structure at the upper end of the porcelain sleeve. Figure 11 As shown, the porcelain sleeve is grasped, and then the electric hoist 104 pulls the grasping bracket 201 upward, and finally the horizontal movement of the walking bracket 101 realizes the movement of the porcelain sleeve, so that the porcelain sleeve is moved to the assembly position for assembly.

[0063] When there is no need to grab the porcelain column, the grabbing assembly moves upward under the pull of the electric hoist 104, so that the grabbing bracket 201 is as close to the walking bracket 101 as possible. Figure 10 As shown, the overall movement is facilitated.

[0064] Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application, and various changes and improvements can be made without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A mechanical arm for assembling a column type circuit breaker, characterized in that: include A base, the base including a walking frame, on which walking rollers are mounted; A grabbing assembly, comprising a grabbing bracket and a pair of grabbing clamps mounted on the grabbing bracket, wherein the grabbing bracket is driven to move up and down by a lifting mechanism mounted on the traveling bracket, and the two grabbing clamps are driven to move closer to or away from each other by a clamping mechanism mounted on the grabbing bracket, thereby achieving grabbing or releasing of the porcelain column; The base includes a walking bracket and a walking roller. The walking bracket is rectangular in shape. A pair of walking roller groups are installed on both sides of the long axis direction of the top of the walking bracket. Each pair of walking roller groups consists of two walking rollers distributed on both sides of the width direction of the walking bracket. The grabbing bracket is a rectangular bracket, and the pair of grabbing splints are respectively mounted on the grabbing bracket via a splint mounting seat, and the splint mounting seats are mounted on the grabbing bracket via a clamping mechanism and driven to move closer to or away from each other by the clamping mechanism, thereby driving the two grabbing splints to move closer to or away from each other; The clamping mechanism is as follows: a pair of clamping guide rails are respectively installed on both sides of the bottom end of the grabbing bracket, and the two pairs of clamping guide rails correspond to the two clamping plate mounting seats one-to-one. Each pair of clamping guide rails is composed of two clamping guide rails distributed in parallel along the width direction of the grabbing bracket, and the clamping guide rails extend along the long axis direction of the grabbing bracket. A clamping slider corresponding to the two clamping guide rails is also installed on the top of the clamping plate mounting seat. The clamping plate mounting seat is driven by a clamping cylinder installed on the grabbing bracket to reciprocate along the clamping guide rails. The grabbing splint is a composite plate formed by connecting a central plate and oblique side plates distributed on both sides of the central plate. The central plate and the oblique side plates extend in the vertical direction. The oblique side plates are obliquely connected to the side ends of the central plate, and the angle formed at the connection between the oblique side plates and the central plate is an obtuse angle. A clamping pad is also installed on the inner wall of the two oblique side plates. The inner wall of the clamping pad is in an arc shape. A plurality of clamping positioning grooves are opened on the inner wall of the clamping pad and are distributed sequentially from top to bottom, and each clamping positioning groove corresponds one by one to the shed skirt of the porcelain sleeve. The lifting mechanism includes an electric hoist installed on a traveling bracket, which is driven by a motor installed on the traveling bracket. A lifting ring that matches the electric hoist is also installed on the top of the grabbing bracket. The hook of the electric hoist is buckled into the lifting ring, thereby pulling the grabbing bracket up and down.

2. The mechanical arm for assembling a porcelain column type circuit breaker according to claim 1, characterized in that: A guide mechanism is also provided between the walking bracket and the grabbing bracket. The guide mechanism is as follows: four vertically arranged limit guide rods are installed at the bottom end of the walking bracket, and the four limit guide rods are respectively located around the grabbing bracket. A guide limit ring is also installed at the top of the grabbing bracket. The diameter of the guide limit ring is larger than the width of the grabbing bracket and smaller than the length of the grabbing bracket. The outer wall of the guide limit ring fits with the inner walls of the four limit guide rods.

3. The mechanical arm for assembling a porcelain column type circuit breaker according to claim 2, characterized in that: An adjustment mechanism is also provided between the limiting guide rod and the traveling bracket, and the adjustment mechanism is as follows: a pair of adjusting guide rails are respectively installed at the bottom ends on both sides of the long axis direction of the traveling bracket, and each pair of adjusting guide rails is composed of two adjusting guide rails distributed on both sides of the width direction of the traveling bracket. An adjusting slider that cooperates with the adjusting guide rail is installed at the top end of the limiting guide rod, and the limiting guide rod is driven by the adjusting cylinder installed on the traveling bracket to reciprocate along the extension direction of the adjusting guide rail, thereby realizing the adjustment of the distance between the two limiting guide rods of the same pair.

4. The mechanical arm for assembling a column type circuit breaker according to claim 1, characterized in that: The grabbing splint and the splint mounting seat are movably connected, and the connection structure is as follows: A gap is left between the grabbing splint and the splint mounting seat; A mounting plate is installed at the middle position of the outer side wall of the grabbing splint, and a through hole for the mounting plate to pass through is opened on the splint mounting seat, and the mounting plate is connected to the splint mounting seat through a mounting shaft after passing through the through hole on the splint mounting seat, and a through hole for the mounting shaft to pass through is opened on the mounting plate, and the mounting plate and the mounting shaft are movably connected, and shaft mounting plates are respectively provided on both sides of the through hole on the splint mounting seat, and both sides of the mounting shaft are respectively fixed to the two shaft mounting plates, so that the grabbing splint is hinged on the splint mounting seat; An upper limit bolt is also installed on the upper end of the clamping plate mounting seat. After the upper limit bolt passes through the clamping plate mounting seat horizontally, the top end of the upper limit bolt extends into the gap between the grabbing clamping plate and the clamping plate mounting seat. A threaded through hole that matches the upper limit bolt is opened on the clamping plate mounting seat. A lower limit bolt is also installed at the bottom end of the splint mounting seat. After the lower limit bolt passes through the splint mounting seat horizontally, the top end of the lower limit bolt extends into the gap between the grabbing splint and the splint mounting seat. A threaded through hole matching the lower limit bolt is opened on the splint mounting seat.

5. The mechanical arm for assembling a column type circuit breaker according to claim 1, characterized in that: A pair of arc-shaped holding plates are provided on the clamping plate mounting seat above the grabbing clamping plate. The two arc-shaped holding plates are driven by horizontal cylinders installed on the clamping plate mounting seat to move closer to or away from each other, thereby tightening or loosening the top of the porcelain column.

6. The mechanical arm for assembling a column type circuit breaker according to claim 1, characterized in that: The traveling roller comprises a roller seat, the bottom end of which is hinged to the traveling bracket, and a plurality of rollers distributed in parallel are mounted on the roller seat, and each roller is arranged in an arc shape on the roller seat.

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