Electric operation and maintenance platform suitable for floor type handcart circuit breaker

Abstract

The invention relates to an electric operation and maintenance platform suitable for a floor type handcart circuit breaker. A gantry linear guide rail system is installed in the middle of an operation and maintenance platform frame system, and handcart type circuit breaker bottom limiting systems are symmetrically installed on the two sides of the operation and maintenance platform frame system; the switching operation tool placing plate and the electroscope placing plate are fixed on the operation and maintenance platform frame system through screws. The operation and maintenance platform limiting and fixing system is installed at the front end of a bottom plate of the operation and maintenance platform frame system. According to the invention, the electric delivery of the handcart type circuit breaker is realized by controlling the gantry linear guide rails in the X and Y axial directions and the electric telescopic module, and the delivery speed of the handcart type circuit breaker can be controlled; the operation plane of the platform is completely parallel to the ground, when the trolley leaves the warehouse, the toppling and stall risks do not exist, the personal injury threat to operation and maintenance personnel is avoided, the position limitation of the handcart type circuit breaker after the handcart type circuit breaker leaves the warehouse is ensured, and the stability of the handcart type circuit breaker in the moving process of the platform is also ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of high-voltage circuit breaker maintenance, and in particular relates to an electric operation and maintenance platform suitable for a floor-standing trolley circuit breaker. Background Art

[0002] With the improvement of power system structure and the increasing requirements for power quality, in order to meet the needs of modern power supply, the main and auxiliary equipment of substations need more sophisticated maintenance and more accurate inspection. The maintenance and overhaul of substations mainly involve daily inspections of main and auxiliary equipment, planned switching operations, accident handling, various special patrols and power supply maintenance, basic data maintenance, and equipment overhaul. Among them, daily inspections of main and auxiliary equipment, planned switching operations, accident handling, various special patrols and power supply maintenance, and basic data maintenance require operation and maintenance personnel to invest a lot of time and energy, which leads to the situation that the operation and maintenance personnel are often insufficient during the spring and autumn inspections; secondly, due to the deepening of population aging in recent years, the average age of operation and maintenance personnel in some substations has reached 50 years old, which also leads to the heavy responsibility of some basic data maintenance, detailed investigation, etc. falling on a few young people; in addition, for some switching operations that may cause mechanical personal injury incidents, such as the operation of floor-standing trolley circuit breaker out of the warehouse (pulling from the "test" position to the "run" position), in addition to the operator and the guardian, 1-2 people are also needed to perform auxiliary operations. When the floor-standing trolley circuit breaker is out of the warehouse, the operation and maintenance personnel need to help on both sides to prevent the trolley switch from tipping over and causing personal injury. In this situation, in order to improve the efficiency of switching operations of trolley-type circuit breakers in substations, reduce the input of personnel during the operation, and reduce the risk of personal injury and death of operation and maintenance personnel, there is an urgent need for a safe, reliable, and electric switching operation tool suitable for trolley-type circuit breakers to improve the problem of insufficient carrying capacity of existing switching operators.

[0003] The existing auxiliary tool for trolley-type circuit breakers to exit the warehouse is a flat ramp device with double guide rails. When the trolley-type circuit breaker needs to be pulled from the "test" position to the "running" position, first open the switch cabinet door, clamp the flat ramp with guide rails on the edge of the switch cabinet body, connect the guide rails on the flat ramp with the guide rails inside the switch cabinet body, and then manually pull the trolley-type circuit breaker from the "test" position to the "running" position (from the position inside the switch cabinet to the position outside the cabinet) by the operation and maintenance personnel. In this process, since the flat ramp with double guide rails has no limit device, the trolley-type circuit breaker exits the warehouse too fast and the exit angle is skewed, which may cause the trolley-type circuit breaker to tip forward or to the left or right, causing equipment damage; in addition, since the trolley-type circuit breaker has a risk of tipping over during the process of exiting the warehouse, 1-2 operation and maintenance personnel are required to assist during the operation, which also leads to the problem of insufficient personnel carrying capacity during the spring and autumn inspections when switching operations are concentrated. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide an electric operation and maintenance platform suitable for floor-standing trolley circuit breakers.

[0005] The present invention solves the technical problem by the following technical solutions:

[0006] An electric operation and maintenance platform suitable for a floor-standing trolley circuit breaker comprises a gantry linear guide system, a trolley circuit breaker bottom limit system, a gate operating tool placement plate, a tester placement plate, an operation and maintenance platform limit fixing system and an operation and maintenance platform frame system; the gantry linear guide system is installed in the middle of the operation and maintenance platform frame system, the trolley circuit breaker bottom limit system is symmetrically installed on both sides of the bottom plate of the operation and maintenance platform frame system to limit the position of the trolley circuit breaker on the operation and maintenance platform; the gate operating tool placement plate and the tester placement plate are respectively fixed to the left and right cross bars of the operation and maintenance platform frame system by screws; the operation and maintenance platform limit fixing system is installed at the front end of the bottom plate of the operation and maintenance platform frame system to fix the operation and maintenance platform on the trolley circuit breaker switch cabinet.

[0007] Moreover, the gantry linear guide system is divided into an X-axis direction system and a Y-axis direction system, wherein the Y-axis direction system includes a Y-axis left linear guide, a Y-axis right linear guide, a transmission rod, a Y-axis left linear guide slider, a Y-axis right linear guide slider, and a Y-axis servo motor; in the Y-axis direction, the Y-axis servo motor drives the Y-axis left linear guide slider and the Y-axis right linear guide slider to move simultaneously through the transmission rod, so as to drive the X-axis direction system to move forward and backward;

[0008] The X-axis direction system includes an X-axis linear guide, an X-axis left slider, an X-axis right slider, an X-axis left telescopic rod, an X-axis right telescopic rod, an X-axis left servo motor, and an X-axis right servo motor; in the X-axis direction, the X-axis left slider and the X-axis right slider are driven by the X-axis left servo motor and the X-axis right servo motor respectively to drive the X-axis left telescopic rod and the X-axis right telescopic rod to move left and right, and the X-axis left telescopic rod and the X-axis right telescopic rod are respectively fixed on the X-axis left slider and the X-axis right slider to realize Y-axis telescopic extension.

[0009] Moreover, the bottom limit system of the trolley-type circuit breaker is symmetrically arranged on both sides of the bottom plate of the operating and maintenance platform frame system, and includes 2 limiter upper main boards, 2 limiter lower auxiliary boards, 10 trapezoidal fixers, 12 movable bolts with springs and 2 limit pins;

[0010] When the trolley circuit breaker is out of the warehouse, the front end limiter, the rear end limiter and the lower end limiter of the trolley circuit breaker press the upper main board of the limiter downward to make the movable bolt with a spring produce elastic deformation. When reaching a certain position, the movable bolt with a spring releases elastic potential energy to make the upper main board of the limiter bounce up, and the front end limiter and the rear end limiter are clamped into the long strip limit groove of the bottom limit system of the trolley circuit breaker; the lower end limiter of the trolley circuit breaker is clamped into the rectangular limit groove to ensure the stability of the trolley circuit breaker on the operation and maintenance platform after the trolley circuit breaker is out of the warehouse;

[0011] When the trolley circuit breaker is pushed into the switch cabinet from the operating and maintenance platform frame system, the upper main board of the limiter needs to be manually pressed down, and the limit pin is inserted into the limit pin slot box in the upper main board of the limiter to fix the upper main board of the limiter, so that the trolley circuit breaker can smoothly leave the operating and maintenance platform frame system and be pushed into the switch cabinet. The bottom limit system of the trolley circuit breaker is fixed on the bottom plate of the operating and maintenance platform frame system by a trapezoidal fixer.

[0012] Moreover, the switching operating tool placement plate is composed of an earthing knife switch operating rod, a trolley crank handle and an operating tool back plate. Two brackets are opened in the central area of ​​the operating tool back plate to place the earthing knife switch operating rod and the trolley crank handle. The switching operating tool placement plate is connected to the left cross bar of the operating and maintenance platform frame system by screws.

[0013] Moreover, the electroscope placement plate is composed of an electroscope and an electroscope back plate, a bracket is opened in the middle of the electroscope back plate to place the electroscope, and the electroscope placement plate is connected to the right crossbar of the operating and maintenance platform frame system through screws.

[0014] Moreover, the operating and maintenance platform frame system includes a bottom plate, 4 universal wheels, 4 universal wheel fixing plates, a left frame, a right frame, a left support rod, a right support rod, a front cross bar, a left cross bar, a right cross bar, a left "L"-shaped limit plate, a right "L"-shaped limit plate, 2 front end fixings of gantry linear guides, 2 left fixings of the middle section of gantry linear guides and 2 right fixings of the middle section of gantry linear guides. The left frame, left support rod, left cross bar and left "L"-shaped limit plate are respectively mirror images of the right frame, right support rod, right cross bar and right "L"-shaped limit plate Arranged on the left and right sides of the operating and maintenance platform frame system, the operating and maintenance platform frame system fixes the gantry linear guide system through two gantry linear guide front end fixings, two gantry linear guide middle left side fixings and two gantry linear guide middle right side fixings to ensure the stability of the entire system; the universal wheel is fixed to the four corners of the bottom plate through the universal wheel fixing plate, and the left "L"-shaped limit plate and the right "L"-shaped limit plate have semi-grooves at the lower ends, which cooperate with the trolley-type circuit breaker to limit the position of the trolley-type circuit breaker on the operating and maintenance platform.

[0015] Moreover, the operating and maintenance platform limit fixing system includes a limiter housing and a limiter pin. When in the limit state, the limiter pin will be stuck to the lower part of the external switch cabinet of the trolley-type circuit breaker to ensure the stability of the operating and maintenance platform.

[0016] The advantages and beneficial effects of the present invention are:

[0017] 1. The present invention can realize the electric exit of the trolley-type circuit breaker by controlling the gantry linear guide rails in the X and Y axes and the electric telescopic module, and can control the exit speed of the trolley-type circuit breaker

[0018] 2. Different from the ramp-type trolley circuit breaker exit tool, the operating plane of the floor-standing trolley circuit breaker electric operation and maintenance platform of the present invention is completely parallel to the ground. There is no risk of tipping and stalling when the trolley is exiting the warehouse, avoiding the threat of personal injury to the operation and maintenance personnel.

[0019] 3. The present invention has two position limiting measures for the trolley-type circuit breaker, namely, the bottom limiting system of the trolley-type circuit breaker arranged on the bottom plate and the limiting holes of the "L"-shaped limiting plates on the left and right sides, which not only ensure the position limitation of the trolley-type circuit breaker after it leaves the warehouse, but also ensure the stability of the trolley-type circuit breaker during the electric operation of the floor-standing trolley circuit breaker and the movement of the maintenance platform.

[0020] 4. Compared with the difficulty in moving and turning of the trolley-type circuit breaker, the mobile system of the present invention adopts a universal wheel method, which can achieve 360° obstacle-free rotation.

[0021] 5. The present invention is provided with a tester placement plate and a switch operation tool placement plate, which solves the problem of placing tools anywhere during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 It is a structural schematic diagram of the present invention (with a trolley circuit breaker);

[0024] Figure 3 It is a schematic diagram of the gantry linear guide system of the present invention;

[0025] Figure 4 It is the layout diagram of the limit system of the present invention;

[0026] Figure 5 It is a partial enlarged view of the limiting system of the present invention;

[0027] Figure 6 It is a schematic diagram of the use and coordination of a trolley-type circuit breaker and the bottom limit system of the trolley-type circuit breaker of the present invention;

[0028] Figure 7 This is a schematic diagram of the cooperation between the trolley-type circuit breaker and the bottom limit system of the trolley-type circuit breaker when the trolley-type circuit breaker is pushed into the switch cabinet;

[0029] Figure 8 It is a schematic diagram of the structure of the switch operation tool placement plate of the present invention;

[0030] Fig. 9 It is a schematic diagram of the structure of the switch electroscope placement plate of the present invention;

[0031] Fig.10 It is a schematic diagram of the framework structure of the present invention;

[0032] Fig.11 It is a partial enlarged view of the left and right fixing parts of the middle section of the frame gantry linear guide rail of the present invention;

[0033] Fig.12 It is a partial enlarged view of the cooperation between the left "L"-shaped limit plate and the trolley-type circuit breaker of the present invention;

[0034] Fig.13 It is a structural schematic diagram of the limiting and fixing system (non-limiting) of the present invention;

[0035] Fig.14 It is a structural schematic diagram of the position limiting and fixing system (position limiting) of the present invention;

[0036] Fig.15 It is a partial enlarged view of the fixing of the limit fixing system of the present invention and the external switch cabinet of the trolley type circuit breaker;

[0037] Fig.16 It is a schematic diagram of the overall coordination of the platform, trolley-type circuit breaker and external switch cabinet of the present invention. DETAILED DESCRIPTION

[0038] The present invention is further described in detail below through specific examples. The following examples are only illustrative and not restrictive, and the protection scope of the present invention cannot be limited thereto.

[0039] The present invention provides an electric operation and maintenance platform (hereinafter referred to as the operation and maintenance platform) suitable for floor-standing handcart circuit breakers. Figures 1 to 16, including a gantry linear guide system 1, a trolley-type circuit breaker bottom limit system 2, a switching operation tool placement plate 3, a tester placement plate 4, an operation and maintenance platform limit fixing system 5 and an operation and maintenance platform frame system 6. The gantry linear guide system 1 is installed in the middle of the operation and maintenance platform frame system 6, wherein the Y-axis left linear guide 7 and the Y-axis right linear guide 8 are stuck in the middle of the operation and maintenance platform frame system 6, and are connected to the operation and maintenance platform frame system 6 by the right fixing piece 48 of the middle section of the gantry linear guide. The gantry linear guide system 1 is supported by a left support rod 39 and a right support rod 40, and is connected to the operation and maintenance platform frame system 6 by the front end fixing piece 46 of the gantry linear guide and the left fixing piece 47 of the middle section of the gantry linear guide to maintain the stability of the gantry linear guide system 1. The bottom limit system 2 of the trolley-type circuit breaker is mirror-mounted on the left and right sides of the bottom plate 25 of the operating and maintenance platform frame system 6 to limit the position of the trolley-type circuit breaker on the operating and maintenance platform; the switching operation tool placement plate 3 is fixed to the left crossbar 42 of the operating and maintenance platform frame system 6 by screws; the electroscope placement plate 4 is fixed to the right crossbar 43 of the operating and maintenance platform frame system 6 by screws; the operating and maintenance platform limit fixing system 5 is installed at the front end position of the bottom plate 25 of the operating and maintenance platform frame system 6 to fix the operating and maintenance platform on the trolley-type circuit breaker switch cabinet.

[0040] The gantry linear guide system 1 is divided into two directional systems, the X-axis and the Y-axis. The Y-axis directional system includes the Y-axis left linear guide 7, the Y-axis right linear guide 8, the transmission rod 9, the Y-axis left linear guide slider 10, the Y-axis right linear guide slider 11, and the Y-axis servo motor 12; the X-axis directional system includes the X-axis linear guide 13, the X-axis left slider 14, the X-axis right slider 15, the X-axis left telescopic rod 16, the X-axis right telescopic rod 17, the X-axis left servo motor 18, and the X-axis right servo motor 19. In the Y-axis direction, the Y-axis servo motor 12 drives the Y-axis left linear guide slider 10 and the Y-axis right linear guide slider 11 to move simultaneously through the transmission rod 9 to drive the X-axis directional system to move forward and backward. In the X-axis direction, the X-axis left slider 14 and the X-axis right slider 15 are driven by the X-axis left servo motor 18 and the X-axis right servo motor 19 to drive the X-axis left telescopic rod 16 and the X-axis right telescopic rod 17 to move left and right. The X-axis left telescopic rod 16 and the X-axis right telescopic rod 17 are respectively fixed on the X-axis left slider 14 and the X-axis right slider 15 to realize the Y-axis telescopic function.

[0041] The bottom limit system 2 of the trolley type circuit breaker is a trolley limit device arranged in a mirror image on the left and right sides of the bottom plate 25 of the operating and maintenance platform frame system 6, which includes 2 limiter upper main boards 20 (1 on each side), 2 limiter lower auxiliary boards 22 (1 on each side), 10 trapezoidal fixers 23 (5 on each side), 12 spring-loaded movable bolts 24 (6 on each side) and 2 limit pins 21 (1 on each side). Figure 5 and Figure 6 As shown, when the trolley circuit breaker is out of the warehouse, the front end limiter 26, the rear end limiter 27 and the lower end limiter 28 of the trolley circuit breaker press the upper main board 20 of the limiter downward to make the movable bolt 24 with a spring produce elastic deformation. When reaching a certain position, the movable bolt 24 with a spring releases elastic potential energy to make the upper main board 20 of the limiter bounce up, and the front end limiter 26 and the rear end limiter 27 are stuck in the long strip limit groove 30 of the bottom limit system 2 of the trolley circuit breaker; the lower end limiter 28 of the trolley circuit breaker is stuck in the rectangular limit groove 29 to ensure the stability of the trolley circuit breaker on the operation and maintenance platform after it is out of the warehouse. Figure 7 As shown, when the trolley circuit breaker is pushed into the switch cabinet from the operating and maintenance platform frame system 6, the upper main board 20 of the limiter needs to be manually pressed downward, and the limit pin 21 is inserted into the limit pin slot box in the upper main board 20 of the limiter to fix the upper main board 20 of the limiter, so that the trolley circuit breaker can smoothly leave the operating and maintenance platform frame system 6 and be pushed into the switch cabinet. The bottom limit system of the trolley circuit breaker is fixed on the bottom plate 25 of the operating and maintenance platform frame system 6 by the trapezoidal fixer 23.

[0042] The switch operating tool placement plate 3 is composed of a grounding knife switch operating rod 31, a trolley crank 32 and an operating tool back plate 30. The operating tool back plate 30 has two brackets in the center area to place the grounding knife switch operating rod 31 and the trolley crank 32. Figure 2 As shown, the switching operating tool placement plate 3 is connected to the left cross piece 42 of the operating and maintenance platform frame system 6 by screws.

[0043] The electroscope placement plate 4 is composed of an electroscope 34 and an electroscope back plate 33. A bracket is provided in the middle of the electroscope back plate 33 to place the electroscope 34. Figure 1 As shown, the electroscope placement plate 4 is connected to the right crossbar 43 of the operating and maintenance platform frame system 6 by screws.

[0044] The operating and maintenance platform frame system 6 includes a bottom plate 25, four universal wheels 35, four universal wheel fixing plates 36, a left frame 37, a right frame 38, a left support rod 39, a right support rod 40, a front crossbar 41, a left crossbar 42, a right crossbar 43, a left "L"-shaped limit plate 44, a right "L"-shaped limit plate 45, two gantry linear guide front end fixing parts 46, two gantry linear guide middle section left side fixing parts 47 and two gantry linear guide middle section right side fixing parts 48. The left frame 37, the left support rod 39, the left crossbar 42, and the left "L"-shaped limit plate 44 are mirror-arranged on the left and right sides of the operating and maintenance platform frame system 6 respectively with the right frame 38, the right support rod 40, the right crossbar 43, and the right "L"-shaped limit plate 45. The operating and maintenance platform frame system 6 fixes the gantry linear guide system 1 through two gantry linear guide front end fixings 46, two gantry linear guide middle left side fixings 47 and two gantry linear guide middle right side fixings 48 to ensure the stability of the entire V system. The universal wheel 35 is fixed to the four corners of the bottom plate 25 through the universal wheel fixing plate 36. The left "L"-shaped limit plate 44 and the right "L"-shaped limit plate 45 have semi-grooves at their lower ends, such as Fig.12 As shown, it cooperates with the trolley-type circuit breaker to limit the position of the trolley-type circuit breaker on the operation and maintenance platform.

[0045] The operating and maintenance platform limit fixing system 5 includes a limiter housing 49 and a limiter pin 50. Fig.13 This is a schematic diagram of the non-limiting state of the operating and maintenance platform limit fixing system 5. Fig.14 The diagram of the limiting state of the limiting fixing system 5 of the operation and maintenance platform is shown in FIG. When in the limiting state, the limiter pin 50 will be stuck to the lower part of the external switch cabinet 51 of the handcart type circuit breaker to ensure the stability of the operation and maintenance platform. Fig.15 shown.

[0046] Although the embodiments and drawings of the present invention are disclosed for illustrative purposes, those skilled in the art will appreciate that various substitutions, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. An electric operation and maintenance platform suitable for floor-standing trolley circuit breakers, characterized in that: The invention comprises a gantry linear guide rail system (1), a bottom limit system (2) for a trolley type circuit breaker, a gate operating tool placement plate (3), a tester placement plate (4), an operating and maintenance platform limit fixing system (5) and an operating and maintenance platform frame system (6); the gantry linear guide rail system (1) is installed in the middle of the operating and maintenance platform frame system (6); the bottom limit system (2) for the trolley type circuit breaker is symmetrically installed on both sides of a bottom plate (25) of the operating and maintenance platform frame system (6) to limit the position of the trolley type circuit breaker on the operating and maintenance platform; the gate operating tool placement plate (3) and the tester placement plate (4) are respectively fixed to the left crossbar (42) and the right crossbar (43) of the operating and maintenance platform frame system (6) by screws; the operating and maintenance platform limit fixing system (5) is installed at the front end of the bottom plate (25) of the operating and maintenance platform frame system (6) to fix the operating and maintenance platform on the trolley type circuit breaker switch cabinet.

2. The electric operation and maintenance platform for floor-standing trolley circuit breakers according to claim 1 is characterized in that: The gantry linear guide system (1) is divided into an X-axis direction system and a Y-axis direction system, wherein the Y-axis direction system comprises a Y-axis left linear guide (7), a Y-axis right linear guide (8), a transmission rod (9), a Y-axis left linear guide slider (10), a Y-axis right linear guide slider (11), and a Y-axis servo motor (12); in the Y-axis direction, the Y-axis servo motor (12) drives the Y-axis left linear guide slider (10) and the Y-axis right linear guide slider (11) to move simultaneously via the transmission rod (9), thereby driving the X-axis direction system to move forward and backward; The X-axis direction system comprises an X-axis linear guide rail (13), an X-axis left slider (14), an X-axis right slider (15), an X-axis left telescopic rod (16), an X-axis right telescopic rod (17), an X-axis left servo motor (18) and an X-axis right servo motor (19); in the X-axis direction, the X-axis left slider (14) and the X-axis right slider (15) are driven by the X-axis left servo motor (18) and the X-axis right servo motor (19) respectively to drive the X-axis left telescopic rod (16) and the X-axis right telescopic rod (17) to move left and right, and the X-axis left telescopic rod (16) and the X-axis right telescopic rod (17) are respectively fixed on the X-axis left slider (14) and the X-axis right slider (15) to realize Y-axis telescopic movement.

3. The electric operation and maintenance platform for floor-standing trolley circuit breakers according to claim 1 is characterized in that: The bottom limit system (2) of the trolley-type circuit breaker is symmetrically arranged on both sides of the bottom plate (25) of the operating and maintenance platform frame system (6), and comprises two limiter upper main plates (20), two limiter lower auxiliary plates (22), ten trapezoidal fixers (23), twelve spring-loaded movable bolts (24) and two limit pins (21); When the trolley-type circuit breaker is out of the warehouse, the front-end limiter (26), the rear-end limiter (27) and the lower-end limiter (28) of the trolley-type circuit breaker press the upper main board (20) of the limiter downward to make the movable bolt (24) with a spring produce elastic deformation. When reaching a certain position, the movable bolt (24) with a spring releases elastic potential energy to make the upper main board (20) of the limiter bounce up, and the front-end limiter (26) and the rear-end limiter (27) are inserted into the long strip limit groove (30) of the bottom limit system (2) of the trolley-type circuit breaker; the lower-end limiter (28) of the trolley-type circuit breaker is inserted into the rectangular limit groove (29) to ensure the stability of the trolley-type circuit breaker on the operation and maintenance platform after the trolley-type circuit breaker is out of the warehouse; When the trolley circuit breaker is pushed into the switch cabinet from the operating and maintenance platform frame system (6), the upper main board (20) of the limiter needs to be manually pressed downward, and the limit pin (21) is inserted into the limit pin slot box in the upper main board (20) of the limiter to fix the upper main board (20), so that the trolley circuit breaker can smoothly leave the operating and maintenance platform frame system (6) and be pushed into the switch cabinet. The bottom limit system of the trolley circuit breaker is fixed on the bottom plate (25) of the operating and maintenance platform frame system (6) by a trapezoidal fixer (23).

4. The electric operation and maintenance platform for floor-standing trolley circuit breakers according to claim 1 is characterized in that: The switch operating tool placement plate (3) is composed of an earthing knife switch operating rod (31), a trolley crank handle (32) and an operating tool back plate (30). Two brackets are opened in the central area of ​​the operating tool back plate (30) to place the earthing knife switch operating rod (31) and the trolley crank handle (32). The switch operating tool placement plate (3) is connected to the left cross bar (42) of the operating and maintenance platform frame system (6) through screws.

5. The electric operation and maintenance platform for floor-standing trolley circuit breakers according to claim 1 is characterized in that: The electroscope placement plate (4) is composed of an electroscope (34) and an electroscope back plate (33). A bracket is provided in the middle of the electroscope back plate (33) for placing the electroscope (34). The electroscope placement plate (4) is connected to a right crossbar (43) of an operating and maintenance platform frame system (6) by means of screws.

6. The electric operation and maintenance platform for floor-standing trolley circuit breakers according to claim 1 is characterized in that: The operating and maintenance platform frame system (6) comprises a bottom plate (25), four universal wheels (35), four universal wheel fixing plates (36), a left frame (37), a right frame (38), a left support rod (39), a right support rod (40), a front cross bar (41), a left cross bar (42), a right cross bar (43), a left "L"-shaped limit plate (44), a right "L"-shaped limit plate (45), two front end fixing parts (46) of gantry linear guide rails, two left side fixing parts (47) of the middle section of gantry linear guide rails, and two right side fixing parts (48) of the middle section of gantry linear guide rails. The left frame (37), the left support rod (39), the left cross bar (42), and the left "L"-shaped limit plate (44) are respectively connected to the right frame (38), the right support rod (4 0), right cross bar (43), and right "L" shaped limit plate (45) are arranged in mirror image on the left and right sides of the operating and maintenance platform frame system (6); the operating and maintenance platform frame system (6) fixes the gantry linear guide system (1) through two gantry linear guide front end fixing parts (46), two gantry linear guide middle section left side fixing parts (47), and two gantry linear guide middle section right side fixing parts (48) to ensure the stability of the entire system; the universal wheel (35) is respectively fixed to the four corners of the bottom plate (25) through the universal wheel fixing plate (36); the left "L" shaped limit plate (44) and the right "L" shaped limit plate (45) have semi-grooves at their lower ends, which cooperate with the trolley type circuit breaker to limit the position of the trolley type circuit breaker on the operating and maintenance platform.

7. The electric operation and maintenance platform for floor-standing trolley circuit breakers according to claim 1 is characterized in that: The operating and maintenance platform limit fixing system (5) comprises a limiter housing (49) and a limiter pin (50). When in a limit state, the limiter pin (50) is clamped to the lower part of the external switch cabinet (51) of the trolley-type circuit breaker to ensure the stability of the operating and maintenance platform.

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