Lifting and positioning device for indoor installation of GIS equipment

Abstract

This invention relates to an indoor installation device for GIS equipment, disclosing a lifting and positioning device for indoor installation of GIS equipment. It includes two identical lifting and positioning components that cooperate with each other. Each lifting and positioning component includes a base assembly, which comprises two base plates distributed at both ends of the lifting and positioning component. The two base plates are equipped with lifting frames capable of vertical movement. Each lifting frame has a U-shaped frame structure, with one end forming the equipment entry opening. When the two lifting and positioning components are used together, the equipment entry openings of the frames are positioned opposite each other. The lifting frame also includes an equipment support plate and casters at the bottom of the frame. When the lifting frame is lowered to its lowest point, the lower surface of the casters is lower than the lower surface of the base. This invention enables convenient handling of GIS equipment by lifting it, while preventing horizontal movement during handling, resulting in high installation and positioning accuracy.

Description

Technical Field

[0001] This invention relates to an indoor installation device for GIS equipment, and more particularly to a lifting and positioning device for indoor GIS equipment installation. Background Technology

[0002] Indoor substations represent the future trend. Because indoor substations have a small footprint, compact building structure, and limited interior space, electrical equipment such as GIS and switchgear cannot be directly positioned by cranes, and no overhead cranes are installed indoors.

[0003] Currently, the common practice in indoor substations is to use flatbed mobile transport equipment to transport and position GIS equipment. However, after the equipment is transported and positioned, multiple operators are still required to detach it from the flatbed transport equipment during the installation process. This is difficult to operate and makes it hard to guarantee the accuracy of the installation position after detachment. Summary of the Invention

[0004] This invention addresses the problems of high operational difficulty and low installation accuracy in the indoor handling and installation of GIS equipment in existing technologies by providing a lifting and positioning device for indoor installation of GIS equipment.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0006] The indoor installation lifting and positioning device for GIS equipment includes two identical lifting and positioning components that work together. Each lifting and positioning component includes a base assembly, which includes two base plates distributed at both ends of the lifting and positioning component. The two base plates are equipped with lifting frames that can move up and down. Each lifting frame includes a U-shaped frame structure with one end forming the equipment entry opening. When the two lifting and positioning components are used together, the equipment entry openings of the frames are positioned opposite each other. The lifting frame also includes an equipment support plate and casters at the bottom of the frame. When the lifting frame is lowered to its lowest point, the lower end of the casters is lower than the lower end of the base.

[0007] The lifting frame is also equipped with a width positioning mechanism, which includes two positioning plates installed on the frame that can move towards or away from each other in the horizontal plane along the width of the equipment. The two positioning plates together form a positioning part that can position the end of the equipment relative to the center of the frame based on the width of the equipment.

[0008] Preferably, the lifting and positioning assembly also includes a four-axis lifting mechanism for driving the lifting frame to move up and down. The four-axis lifting mechanism includes four vertically arranged lifting screws mounted on the base, a threaded sleeve fixed on the lifting frame and threadedly connected to the lifting screws, and a lifting screw drive mechanism for driving the four lifting screws to rotate synchronously.

[0009] Preferably, the lifting screw drive mechanism includes a servo motor fixedly mounted on the lifting frame and a lifting screw transmission mechanism connected to the servo motor. The servo motor is positioned in the middle between the two base plates. The lifting screw transmission mechanism includes a horizontally arranged drive shaft and two driven drive shafts connected to the drive shaft via steering gears. The two driven drive shafts are respectively connected to the lifting screws on the two base plates via steering gears. This lifting screw drive mechanism effectively enables synchronous driving of the four lifting screws, achieving automatic lifting of the equipment.

[0010] Preferably, a positioning plate drive mechanism is installed on the frame. This mechanism includes a positioning screw axially aligned along the width of the equipment and a positioning plate drive motor for rotating the screw. Two positioning plate mounting seats with opposite thread directions are threaded onto the positioning screw. One end of the positioning plate is mounted on the mounting seat, and the other end extends towards the equipment's entry opening. This width positioning mechanism effectively prevents imbalance when the lifting and positioning assembly lifts the GIS equipment.

[0011] Preferably, the system also includes a positioning plate calibration mechanism, which includes a calibration scale line set on the frame and located above the positioning screw, and a calibration rod that moves with the positioning plate. The frame has a long groove along the calibration scale line for the upper end of the calibration rod to pass through, and the lower end of the calibration rod is connected to the positioning plate mounting base.

[0012] Preferably, the lifting and positioning assembly includes a control system electrically connected to the servo motor. The control system includes a power supply and a main power supply branch connected to the power supply. The main power supply branch is connected to a width positioning branch, and the positioning plate drive motor is connected to the width positioning branch. The width positioning branch enables the positioning plate to automatically move to the corresponding position for accurate positioning based on the width of the equipment.

[0013] Preferably, the system also includes a depth positioning mechanism. This mechanism comprises an indicator light mounted on the lifting frame and a cascaded detection mechanism for generating and sending instructions to the indicator light. The cascaded detection mechanism includes a depth positioning branch connected to the main power supply branch. This branch includes two detection switches connected in series. The depth positioning branch connects to the main power supply branch when both detection switches are closed to generate an indication instruction. This depth positioning mechanism allows workers to visually determine whether the device has been pushed into place based on whether the indicator light is illuminated.

[0014] Preferably, the cascaded detection mechanism also includes two switch mounting bases respectively mounted on two positioning plates. Each switch mounting base includes a fixed plate and a movable plate that can move towards or away from the fixed plate. The fixed plate and the movable plate are arranged parallel to each other, with their length direction aligned with the height direction of the positioning plates. The surface of the movable plate and the surface of the positioning plate together form an L-shaped positioning groove. The fixed plate and the movable plate are respectively provided with a first contact and a second contact. The movable plate can move to the position where the first and second contact contacts, thereby closing the detection switch. The cascaded detection mechanism can further determine whether the positioning part is accurately positioned and whether the equipment is centered within the positioning part.

[0015] Preferably, a guide plate is connected to the end of the positioning plate away from the positioning plate mounting base. A rotatable first connecting shaft and a first limiting mechanism for limiting the rotation of the first connecting shaft are provided between the positioning plate and the guide plate. A torsion spring is provided on the first connecting shaft for driving the guide plate to flip away from the positioning part. The torsion spring allows the guide plate to automatically turn outward to its maximum angle, so that the operator does not need to worry too much about whether the positioning part and the equipment mounting plate are aligned when pushing in the lifting and positioning assembly.

[0016] Preferably, the positioning plate has a receiving groove on its end face facing away from the positioning part, allowing the guide plate to flip into the receiving groove. The positioning plate mounting base is provided with a second connecting shaft for connecting the positioning plate and a second limiting mechanism for limiting the rotation of the second connecting shaft. The first limiting mechanism can position the guide plate and prevent it from flipping directly into the receiving groove and losing its guiding function.

[0017] This invention, by adopting the above technical solutions, has significant technical effects:

[0018] This invention provides a lifting and positioning device that can conveniently transport GIS equipment by lifting it, while preventing horizontal movement during transport and achieving high installation and positioning accuracy. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the working state of the present invention.

[0020] Figure 2 This is a schematic diagram showing the state in which the GIS equipment is lifted up according to the present invention.

[0021] Figure 3 This is a schematic diagram of the lifting and positioning device of the present invention.

[0022] Figure 4 yes Figure 3 Another perspective structural diagram.

[0023] Figure 5This is a schematic diagram of the structure of the present invention after the lifting frame and base assembly have been removed.

[0024] Figure 6 This is a partially enlarged view of the width positioning mechanism of the present invention. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0026] Lifting and positioning devices for indoor installation of GIS equipment, such as Figures 1-6 As shown, the device includes two identical lifting and positioning components 1 that work together. Each lifting and positioning component 1 includes a base assembly, which comprises two base plates 101 distributed at both ends of the lifting and positioning component 1. A lifting frame 102 capable of vertical movement is mounted on each base plate 101. The lifting frame 102 includes a frame body 104 with a U-shaped frame structure, one end of which forms an equipment entry opening 103. The frame body 104 includes a frame base 136 and a guardrail 137 mounted on the frame base 136. When the two lifting and positioning components 1 are used together, the equipment entry openings 103 of the frame body 104 are positioned opposite each other. The lifting frame 102 also includes an equipment support plate 105 and casters 106 located at the bottom of the frame body 104. When the lifting frame 102 descends to its lowest point, the lower surface of the casters 106 is lower than the lower surface of the base.

[0027] During operation, in the initial state, the caster wheel 106 is supported on the ground. At this time, two workers push the two lifting and positioning components 1 into the device entry openings 103 towards the two ends of the GIS device 2, so that the device ends enter the device entry openings 103 and the tray is below the GIS device 2.

[0028] Then drive the lifting frame 102 to rise. As the lifting frame 102 rises, the casters 106 leave the ground, the base plate 101 is supported on the ground, and the equipment tray 105 can lift the GIS equipment 2. At this time, the flatbed transport vehicle 3 at the bottom of the GIS equipment 2 can be moved out. Then move the lifting frame 102 down so that the GIS equipment 2 is attached to the corresponding installation bracket on the indoor ground. At this time, the two lifting and positioning components 1 can be moved out. The same operation is then performed to install other parallel equipment one by one.

[0029] In this embodiment, the lifting and positioning assembly 1 further includes a four-axis lifting mechanism for driving the lifting frame 102 to move up and down. The four-axis lifting mechanism includes four vertically arranged lifting screws 107 with their bottoms mounted on the base, a threaded sleeve 108 fixed to the lifting frame 102 and threadedly connected to the lifting screws 107, and a lifting screw drive mechanism for driving the four lifting screws 107 to rotate synchronously. The threaded sleeve 108 is provided with an internal thread that mates with the lifting screws 107. The top of the threaded sleeve 108 is fixed to the fence post 137, and the bottom is provided with an outer flange, which is fixed to the frame base 136 by bolts connected to the outer flange. The upper end of the lifting screw 107 passes through the frame base 136 and is threadedly connected to the threaded sleeve 108.

[0030] The lifting screw drive mechanism includes a servo motor 109 fixedly mounted on the lifting frame 102 and a lifting screw transmission mechanism connected to the servo motor 109. The servo motor 109 is located at the middle position between the two base plates 101, which can maintain the balance of both ends of the lifting and positioning assembly 1 as much as possible in terms of structure.

[0031] The lifting screw transmission mechanism includes a horizontally arranged active drive shaft 110 and two driven drive shafts 111 connected to the active drive shaft 110 via steering gears. The two driven drive shafts 111 are respectively connected to the lifting screws 107 on the two base plates 101 via steering gears.

[0032] GIS equipment 2 is a large indoor device, which is generally integrated on a mounting plate. The length and width of the entire device are generally greater than the length of the flatbed transport vehicle 3. During transportation, it is first transported to the designated indoor location by the flatbed transport vehicle 3. There are usually two equipment towing poles at this location. The flatbed transport vehicle 3 can run between the two equipment towing poles to prepare for the subsequent disengagement of the equipment transport device.

[0033] During the lifting process, the servo motor 109 drives the active transmission shaft 110 to rotate through its motor shaft and corresponding gears. The active transmission wheel drives the driven transmission shaft 111 to rotate through corresponding steering gears, such as two meshing bevel gears. Similarly, the two driven transmission shafts 111 drive the two lifting screws 107 on the two base plates 101 to rotate. As the lifting screws 107 rotate, the lifting frame 102 moves up and down, thereby driving the GIS equipment 2 to move up and down through the equipment tray 105, thus completing the convenient installation of the GIS equipment 2. At the same time, this method of installing and positioning the GIS equipment 2 based on electric equipment does not involve horizontal movement during transportation, but rather vertical transportation, which has higher positioning accuracy compared to manual transportation or other transportation methods.

[0034] To prevent the lifting and positioning component 1 from becoming unbalanced during installation, a width positioning mechanism is also installed on the lifting frame 102. This width positioning mechanism can ensure that the GIS equipment 2 is located at the center of the lifting and positioning component 1, ensure that the forces on both ends of the lifting and positioning component 1 on one side are balanced, and also ensure the overall transport balance of the lifting and positioning components 1 on both sides.

[0035] Specifically, the width positioning mechanism includes two positioning plates 112 mounted on the frame 104 that can move towards or away from each other in the horizontal plane along the width direction of the equipment. The two positioning plates 112 together form a positioning part that can position the ends of the equipment relative to each other at the center of the frame 104 based on the width of the equipment.

[0036] A positioning plate drive mechanism is installed on the frame 104. The positioning plate drive mechanism includes a positioning screw 113 axially arranged along the width direction of the equipment and a positioning plate drive motor 132 for driving the positioning screw 113 to rotate. Two positioning plate mounting seats 114 with opposite thread directions are threadedly connected to the positioning screw 113. One end of the positioning plate 112 is mounted on the positioning plate mounting seat 114, and the other end extends toward the equipment entry opening end 103. The positioning plate mounting seat 114 is also provided with a corresponding slide groove. A slide rail that cooperates with the slide groove is provided on the frame 104 along the axial direction of the positioning screw 113.

[0037] The lifting and positioning assembly 1 also includes a control system electrically connected to the servo motor 109. The control system includes a power supply and a main power supply branch connected to the power supply. The main power supply branch is connected to a width positioning branch, and the positioning plate drive motor 132 is connected to the width positioning branch.

[0038] During operation, the operator can determine the number of rotations of the positioning plate drive motor 132 based on the width of the GIS equipment 2 mounting plate. The control system can be equipped with a corresponding input display screen. By inputting the width of the GIS equipment 2 mounting plate, the data processing unit in the control system can automatically determine the number of rotations of the positioning plate drive motor 132 based on the pitch of the positioning screw 113 and the width of the GIS equipment 2 mounting plate, i.e., the linear displacement of the positioning plate mounting seat 114. This allows the two positioning plates 112 to move accurately to positions suitable for the different widths of the GIS equipment 2, thus forming a suitable positioning part. This ensures that the end of the GIS equipment 2 is at the center of the lifting and positioning assembly 1, preventing imbalance at both ends when the GIS equipment 2 is lifted.

[0039] This embodiment also includes a positioning plate calibration mechanism. The positioning plate calibration mechanism includes a calibration scale line 115 disposed on the frame 104 and located above the positioning screw 113, and a calibration rod 116 that moves with the positioning plate 112. The frame 104 has an elongated groove 117 along the calibration scale line 115 for the upper end of the calibration rod 116 to pass through. The lower end of the calibration rod 116 is connected to the positioning plate mounting base 114. Specifically, a threaded hole is provided on the positioning plate mounting base 114, and the bottom of the calibration rod is threaded into the threaded hole. The positioning plate calibration mechanism allows the operator to more intuitively observe whether the positioning part is at the center position of the lifting and positioning component 1, and can also directly record the position. This allows the positioning plate 112 to be manually adjusted to the required position when facing equipment mounting plates of the same width, so that it can better cope with different situations, such as when the positioning plate drive motor 132 fails to work due to a sudden situation or when the display screen cannot input the corresponding width value.

[0040] In this embodiment, in order to enable the operator to more intuitively observe whether the lifting and positioning component 1 is pushed into place when it is pushed into the end of the equipment, a depth positioning mechanism is also provided. The depth positioning mechanism includes an indicator light 118 set on the lifting frame 102 and a cascade detection mechanism for generating an indication command sent to the indicator light 118. The cascade detection mechanism includes a depth positioning branch connected to the main power supply branch. The depth positioning branch includes two detection switches 119 connected in series. The depth positioning branch is used to connect to the main power supply branch when both detection switches 119 are in the closed state, so as to generate an indication command.

[0041] The cascaded detection mechanism also includes two switch mounting bases respectively mounted on two positioning plates 112. Each switch mounting base includes a fixed plate 120 and a movable plate 121 that can move towards or away from the fixed plate 120. A connecting post passing through the movable plate 121 connects the movable plate 121 and the fixed plate 120, and a return spring is provided on the connecting post for resetting the movable plate 121. The fixed plate 120 and the movable plate 121 are arranged parallel to each other, with their length direction along the height direction of the positioning plate 112. The surface of the movable plate 121 and the surface of the positioning plate 112 together form an L-shaped positioning groove 122. The fixed plate 120 and the movable plate 121 are respectively provided with a first contact piece 123 and a second contact piece 124, which are respectively located on the upper end surfaces of the movable plate 121 and the fixed plate 120. The movable plate 121 can move to the position where the first contact piece 123 and the second contact piece 124 contact each other, so that the detection switch 119 is closed.

[0042] During the process of pushing the lifting and positioning assembly 1 into the end of the equipment, the equipment mounting plate will squeeze the movable plate 121, causing it to move towards the fixed plate 120. Then, the first contact piece 123 and the second contact piece 124 will come into contact, causing the detection switch 119 to close. When both detection switches 119 are closed, it indicates that the lifting and positioning assembly 1 has been pushed into place. At this time, the detection switch 119 generates an indication command, and the indicator light 118 lights up. The operator can intuitively judge whether it has been pushed into place based on whether the indicator light 118 is lit. Furthermore, since both detection switches 119 need to be closed for the indicator light 118 to light up, it is also possible to further determine whether the positioning part is accurately positioned and whether the equipment is in the center position of the positioning part.

[0043] In this embodiment, a guide plate 125 is connected to the end of the positioning plate 112 furthest from the positioning plate mounting base 114. The guide plate 125 guides the equipment during the process of pushing the lifting and positioning assembly 1 into the end of the equipment, allowing the equipment mounting plate to enter between the two positioning plates 112 better and faster. To further improve the stability and smoothness of the pushing process, rubber rollers with rubber outer surfaces are also provided on both the guide plate 125 and the positioning plate 112 to reduce wear on the surface of the equipment mounting plate.

[0044] In addition, in this embodiment, a first connecting shaft 126 capable of rotation and a first limiting mechanism 127 for limiting the rotation of the first connecting shaft 126 are provided between the positioning plate 112 and the guide plate 125. The first connecting shaft 126 is provided with a torsion spring 128 for driving the guide plate 125 to flip away from the positioning part. The torsion spring 128 enables the guide plate 125 to automatically flip outward, and the end of the guide plate 125 away from the positioning plate 112 can rest on the frame 104. Under the limiting action of the frame 104, the guide plate 125 automatically flips outward to the maximum angle, so that the operator does not need to worry too much about whether the positioning part and the equipment mounting plate are aligned when pushing in the lifting and positioning assembly 1, but is naturally guided into the positioning part.

[0045] The positioning plate 112 has a receiving groove 129 on the end face facing away from the positioning part. The guide plate 125 can be flipped into the receiving groove 129. The positioning plate mounting base 114 is provided with a second connecting shaft 130 for connecting the positioning plate 112 and a second limiting mechanism 131 for limiting the rotation of the second connecting shaft 130.

[0046] The first limiting mechanism 127 and the second limiting mechanism 131 have the same structure. Both include a positioning post 133 coaxially arranged on the first connecting shaft 126 or the second connecting shaft 130. The outer wall of the positioning post 133 is provided with a plurality of positioning holes 134 evenly arranged around the circumference. It also includes a positioning bolt 135 whose end can be inserted into the positioning hole 134. By cooperating with different positioning holes 134, the rotation of the first connecting shaft 126 or the second connecting shaft 130 can be limited.

[0047] The first limiting mechanism 127 is designed to position the guide plate 125 when the distance between the two positioning plates 112 is small and the end of the guide plate 125 cannot rest on the frame 104, preventing the guide plate 125 from flipping directly into the receiving groove 129 and losing its guiding function. The positioning plate 112 is installed by connecting shaft and limiting mechanism. When the width of the equipment mounting plate reaches the width of the equipment entry opening 103 of the frame 104, the positioning plate 112 will occupy a certain space at the entry opening. Therefore, for equipment mounting plates with such extreme widths, the operator can first store the guide plate 125 in the receiving groove 129, and then release the second limiting mechanism 131, so that the positioning plate 112 rotates to the rear side of the U-shaped frame, that is, the side opposite to the equipment entry opening 103, so that the positioning plate 112 does not affect the entry of the equipment mounting plate.

[0048] It is readily understood that those skilled in the art can combine, split, or reorganize the embodiments provided in this application to obtain other embodiments, none of which exceed the protection scope of this application.

[0049] In summary, the above description is only a preferred embodiment of the present invention. All equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the present invention.

Claims

1. A lifting and positioning device for indoor installation of GIS equipment, characterized in that: The system includes two identical lifting and positioning components (1) that work together. Each lifting and positioning component (1) includes a base assembly, which includes two base plates (101) distributed at both ends of the lifting and positioning component (1). The two base plates (101) are equipped with lifting frames (102) that can move up and down. Each lifting frame (102) includes a frame (104) with a U-shaped frame structure and one end forming an equipment entry opening (103). When the two lifting and positioning components (1) work together, the equipment entry openings (103) of the frame (104) are positioned opposite each other. The lifting frame (102) also includes an equipment support plate (105) and casters (106) located at the bottom of the frame (104). When the lifting frame (102) descends to its lowest point, the lower end of the casters (106) is lower than the lower end of the base. The lifting frame (102) is also equipped with a width positioning mechanism, which includes two positioning plates (112) installed on the frame (104) that can move towards or away from each other in the horizontal plane along the width direction of the equipment. The two positioning plates (112) together form a positioning part that can position the end of the equipment relative to the center of the frame (104) based on the width of the equipment.

2. The lifting and positioning device for indoor installation of GIS equipment according to claim 1, characterized in that: The lifting and positioning assembly (1) also includes a four-axis lifting mechanism for driving the lifting frame (102) to move up and down. The four-axis lifting mechanism includes four vertically arranged lifting screws (107) with their bottoms mounted on the base assembly, a threaded sleeve (108) fixed on the lifting frame (102) and threadedly connected to the lifting screws (107), and a lifting screw drive mechanism for driving the four lifting screws (107) to rotate synchronously.

3. The indoor installation lifting and positioning device for GIS equipment according to claim 2, characterized in that: The lifting screw drive mechanism includes a servo motor (109) fixedly mounted on the lifting frame (102) and a lifting screw transmission mechanism connected to the servo motor (109). The servo motor (109) is located at the middle position between the two base plates (101). The lifting screw transmission mechanism includes a horizontally arranged active drive shaft (110) and two driven drive shafts (111) connected to the active drive shaft (110) through a steering gear. The two driven drive shafts (111) are respectively connected to the lifting screws (107) on the two base plates (101) through steering gears.

4. The lifting and positioning device for indoor installation of GIS equipment according to claim 1, characterized in that: A positioning plate drive mechanism is installed on the frame (104). The positioning plate drive mechanism includes a positioning screw (113) axially arranged along the width direction of the equipment and a positioning plate drive motor (132) for driving the positioning screw (113) to rotate. Two positioning plate mounting seats (114) with opposite thread directions are threaded on the positioning screw (113). One end of the positioning plate (112) is installed on the positioning plate mounting seat (114), and the other end extends toward the equipment entry opening end (103).

5. The indoor installation lifting and positioning device for GIS equipment according to claim 4, characterized in that: It also includes a positioning plate calibration mechanism, which includes a calibration scale line (115) set on the frame (104) and located above the positioning screw (113) and a calibration rod (116) that moves with the positioning plate (112). The frame (104) has a long groove (117) along the calibration scale line (115) for the upper end of the calibration rod (116) to pass through. The lower end of the calibration rod (116) is connected to the positioning plate mounting base (114).

6. The indoor installation lifting and positioning device for GIS equipment according to claim 4, characterized in that: The lifting and positioning assembly (1) includes a control system electrically connected to a servo motor (109). The control system includes a power supply and a main power supply branch connected to the power supply. The main power supply branch is connected to a width positioning branch, and the positioning plate drive motor (132) is connected to the width positioning branch.

7. The indoor installation lifting and positioning device for GIS equipment according to claim 6, characterized in that: It also includes a depth positioning mechanism, which includes an indicator light (118) mounted on the lifting frame (102) and a cascaded detection mechanism for generating an indication command sent to the indicator light (118). The cascaded detection mechanism includes a depth positioning branch connected to the main power supply branch. The depth positioning branch includes two detection switches (119) connected in series. The depth positioning branch is used to connect to the main power supply branch when both detection switches (119) are closed, so as to generate an indication command.

8. The indoor installation lifting and positioning device for GIS equipment according to claim 7, characterized in that: The cascaded detection mechanism also includes two switch mounting bases respectively mounted on two positioning plates (112). The switch mounting base includes a fixed plate (120) and a movable plate (121) that can move toward or away from the fixed plate (120). The fixed plate (120) and the movable plate (121) are arranged parallel to each other and their length direction is along the height direction of the positioning plate (112). The plate surface of the movable plate (121) and the plate surface of the positioning plate (112) together form an L-shaped positioning groove (122). The fixed plate (120) and the movable plate (121) are respectively provided with a first contact piece (123) and a second contact piece (124). The movable plate (121) can move to the position where the first contact piece (123) and the second contact piece (124) are in contact, so that the detection switch (119) is closed.

9. The indoor installation lifting and positioning device for GIS equipment according to claim 4, characterized in that: A guide plate (125) is connected to the end of the positioning plate (112) away from the positioning plate mounting base (114). A first connecting shaft (126) that can rotate is provided between the positioning plate (112) and the guide plate (125), and a first limiting mechanism (127) for limiting the rotation of the first connecting shaft (126) is provided on the first connecting shaft (126). A torsion spring (128) is provided on the first connecting shaft (126) for driving the guide plate (125) to flip away from the positioning part.

10. The indoor installation lifting and positioning device for GIS equipment according to claim 9, characterized in that: The positioning plate (112) has a receiving groove (129) on the end face facing away from the positioning part. The guide plate (125) can be flipped into the receiving groove (129). The positioning plate mounting base (114) is provided with a second connecting shaft (130) for connecting the positioning plate (112) and a second limiting mechanism (131) for limiting the rotation of the second connecting shaft (130).

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