Lifting in-place device for indoor installation of GIS (Gas Insulated Switchgear) equipment

Abstract

The invention relates to a GIS equipment indoor installation device, and discloses a lifting in-place device for GIS equipment indoor installation. The device comprises two lifting in-place assemblies which are the same in structure and used in a relatively matched mode, each lifting in-place assembly comprises a base assembly, each base assembly comprises two bottom plates distributed at the two ends of the corresponding lifting in-place assembly, and lifting frames capable of moving up and down are arranged on the two bottom plates; the lifting frame comprises a frame body which is of a U-shaped frame structure, and one end of the frame body forms an equipment entering opening end. When the two lifting in-place assemblies are used in cooperation, the equipment entering opening ends of the frame body are oppositely arranged. The lifting frame further comprises an equipment supporting plate and universal wheels which are arranged at the bottom of the frame body. When the lifting frame descends to the lowest point, the lower end faces of the universal wheels are lower than the lower end face of the base. According to the GIS equipment carrying device, the GIS equipment can be conveniently carried by supporting the GIS equipment, meanwhile, horizontal movement cannot occur in the carrying process, and the GIS equipment carrying device has high installation in-place accuracy.

Description

Technical Field

[0001] The present invention relates to an indoor installation device for GIS equipment, and particularly to a lifting and positioning device for indoor installation of GIS equipment. Background Art

[0002] The all - indoor substation is the future development trend. Due to the small floor area of the all - indoor substation, the building structure design is compact, the indoor space is narrow. When electrical equipment such as GIS and switchgear is installed indoors, it is impossible to directly position it with a crane and there is no overhead crane installed indoors.

[0003] Currently, the common practice in indoor substations is to use flat - bed mobile transportation equipment to transport and position GIS equipment. However, after the equipment is transported and positioned, during the installation process, multiple operators are still required to detach it from the flat - bed transportation equipment, which is difficult to operate and it is difficult to ensure the accuracy of the installation position after detachment. Summary of the Invention

[0004] Aiming at the problems of large operation difficulty and low installation position accuracy existing in the indoor handling and installation process of GIS equipment in the prior art, the present invention provides a lifting and positioning device for indoor installation of GIS equipment.

[0005] In order to solve the above - mentioned technical problems, the present invention is solved by the following technical solutions: A lifting and positioning device for indoor installation of GIS equipment includes two lifting and positioning components with the same structure and used in relative cooperation. The lifting and positioning component includes a base component. The base component includes two bottom plates distributed at both ends of the lifting and positioning component. An elevating frame capable of moving up and down is provided on the two bottom plates. The elevating frame includes a frame body in a U - shaped frame structure with one end forming an equipment entry opening end. When the two lifting and positioning components are used in cooperation, the equipment entry opening ends of the frame bodies are arranged opposite to each other; the elevating frame further includes an equipment support plate and universal wheels provided at the bottom of the frame body. When the elevating frame descends to the lowest point, the lower end surface of the universal wheels is lower than the lower end surface of the base. A width positioning mechanism is further installed on the elevating frame. The width positioning mechanism includes two positioning plates installed on the frame body and capable of moving towards or away from each other in the horizontal plane along the equipment width direction. A positioning portion is formed between the two positioning plates for relatively positioning the equipment ends at the center position of the frame body based on the equipment width.

[0006] Preferably, the lifting and positioning component further includes a four - axis lifting mechanism for driving the elevating frame to move up and down. The four - axis lifting mechanism includes four lifting screws vertically arranged with their bottoms installed on the base, a threaded sleeve rod fixed on the elevating frame and thread - connected with the lifting screws, and a lifting screw driving mechanism for driving the four lifting screws to rotate synchronously.

[0007] Preferably, the lifting screw driving mechanism includes a servo motor fixedly installed on the lifting frame and a lifting screw transmission mechanism connected to the servo motor. The servo motor is arranged at the middle position between the two bottom plates. The lifting screw transmission mechanism includes a horizontally arranged driving transmission shaft and two driven transmission shafts connected to the driving transmission shaft through steering gears. The two driven transmission shafts are respectively connected to the lifting screws on the two bottom plates through steering gears. The setting of the lifting screw driving mechanism can effectively realize the synchronous driving of the four lifting screws to automatically lift the equipment.

[0008] Preferably, a positioning plate driving mechanism is installed on the frame body. The positioning plate driving mechanism includes a positioning screw axially arranged along the width direction of the equipment and a positioning plate driving motor for driving the positioning screw to rotate. Two positioning plate mounting seats with opposite thread directions are threadedly connected to the positioning screw. One end of the positioning plate is installed on the positioning plate mounting seat, and the other end extends towards the equipment inlet opening end. The setting of the width positioning mechanism can effectively prevent the lifting and positioning assembly from being unbalanced when lifting the GIS equipment.

[0009] Preferably, a positioning plate calibration mechanism is further included. The positioning plate calibration mechanism includes a calibration scale line arranged on the frame body above the positioning screw and a calibration benchmark following the movement of the positioning plate. A long slot for the upper end of the calibration benchmark to pass through is provided on the frame body along the calibration scale line, and the lower end of the calibration benchmark is connected to the positioning plate mounting seat.

[0010] 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 driving motor is connected to the width positioning branch. The setting of the width positioning branch can enable the positioning plate to automatically run to the corresponding position according to the equipment width for accurate positioning.

[0011] Preferably, a depth positioning mechanism is further included. The depth positioning mechanism includes an indicator light arranged on the lifting frame and a cascade detection mechanism for generating an indication instruction sent to the indicator light. The cascade detection mechanism includes a depth positioning branch connected to the main power supply branch. The depth positioning branch includes two detection switches connected in series. The depth positioning branch is used to connect to the main power supply branch when both detection switches are in the closed state to generate an indication instruction. The setting of the depth positioning mechanism can enable the staff to intuitively judge whether it is pushed in place according to whether the indicator light is on.

[0012] Preferably, the cascade detection mechanism further includes two switch mounting seats respectively installed on two positioning plates. The switch mounting seat includes a fixed plate and a movable plate capable of moving towards or away from the fixed plate. The fixed plate and the movable plate are arranged parallel to each other and the length direction is along the height direction of the positioning plate. The plate surface of the movable plate and the plate 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 piece and a second contact piece. The movable plate can move to a position where the first contact piece is in contact with the second contact piece to close the detection switch. The setting of the cascade detection mechanism can further determine whether the positioning part is accurately positioned and whether the device is at the central position of the positioning part.

[0013] Preferably, a guide plate is connected to the end of the positioning plate far from the positioning plate mounting seat. 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 for driving the guide plate to flip away from the positioning part is provided on the first connecting shaft. The setting of the torsion spring can make the guide plate automatically turn outwards to the maximum angle, so that the operator does not need to overly consider whether the positioning part is aligned with the equipment mounting plate during the process of pushing in the lifting and positioning component.

[0014] Preferably, a receiving groove is provided on the end face of the positioning plate facing away from the positioning part. The guide plate can be flipped into the receiving groove. A second connecting shaft for connecting the positioning plate and a second limiting mechanism for limiting the rotation of the second connecting shaft are provided on the positioning plate mounting seat. The setting of the first limiting mechanism can position the guide plate to prevent the guide plate from directly flipping into the receiving groove and losing its guiding function.

[0015] Due to the adoption of the above technical solutions, the present invention has remarkable technical effects: The present invention provides a lifting and positioning device, which can conveniently carry the GIS device by lifting it, and at the same time, there will be no horizontal movement during the carrying process, and it has high installation and positioning accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the working state of the present invention.

[0017] Figure 2 is a schematic diagram of the state where the GIS device is lifted by the present invention.

[0018] Figure 3 is a schematic diagram of the structure of the lifting and positioning device of the present invention.

[0019] Figure 4 is Figure 3 a schematic diagram of the structure from another perspective.

[0020] Figure 5 is a schematic diagram of the structure of the present invention after removing the lifting frame and the base assembly.

[0021] Figure 6 It is a partial enlarged view of the width positioning mechanism of the present invention. Specific embodiments

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0023] The lifting and positioning device for indoor installation of GIS equipment, as Figures 1-6 shown, includes two lifting and positioning components 1 with the same structure and used in relative cooperation. The lifting and positioning component 1 includes a base component. The base component includes two base plates 101 distributed at both ends of the lifting and positioning component 1. A lifting frame 102 capable of moving up and down is provided on the two base plates 101. The lifting frame 102 includes a frame body 104 having a U-shaped frame structure and one end forming an equipment entry opening end 103. The frame body 104 includes a frame body base 136 and guardrails 137 provided on the frame body base 136. When the two lifting and positioning components 1 are used in cooperation, the equipment entry opening ends 103 of the frame bodies 104 are arranged oppositely; the lifting frame 102 further includes an equipment support plate 105 and universal wheels 106 provided at the bottom of the frame body 104. When the lifting frame 102 descends to the lowest point, the lower end surface of the universal wheel 106 is lower than the lower end surface of the base.

[0024] During the working process, in the initial state, the universal wheels 106 are in a state of supporting on the ground. At this time, two workers push the equipment entry opening ends 103 of the two lifting and positioning components 1 towards both ends of the GIS equipment 2, so that the equipment ends enter the equipment entry opening ends 103 and the support plate is located below the GIS equipment 2; Then drive the lifting frame 102 to rise. As the lifting frame 102 is lifted, the universal wheels 106 leave the ground, and the base plates 101 support on the ground. The equipment support plate 105 can lift the GIS equipment 2. At this time, the flatbed transporter 3 at the bottom of the GIS equipment 2 can be removed. Then move the lifting frame 102 downward so that the GIS equipment 2 is lapped on the corresponding installation brackets on the indoor ground. At this time, the two lifting and positioning components 1 can be removed, and the same operation can be performed subsequently to install other parallel equipment one by one.

[0025] 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 lifting screws 107 vertically arranged with their bottoms mounted on the base, a threaded sleeve rod 108 fixed on the lifting frame 102 and threadedly connected to the lifting screws 107, and a lifting screw driving mechanism for driving the four lifting screws 107 to rotate synchronously. The threaded sleeve rod 108 is provided with internal threads matching the lifting screws 107. The top of the threaded sleeve rod 108 is fixed on the railing 137, and the bottom is provided with an outward flange, which is fixed on the frame base 136 through bolts connected to the outward flange. The upper end of the lifting screw 107 passes through the frame base 136 and is threadedly connected inside the threaded sleeve rod 108.

[0026] Among them, the lifting screw driving mechanism includes a servo motor 109 fixedly installed on the lifting frame 102 and a lifting screw transmission mechanism connected to the servo motor 109. The servo motor 109 is arranged at the middle position between the two bottom 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.

[0027] The lifting screw transmission mechanism includes a horizontally arranged driving transmission shaft 110 and two driven transmission shafts 111 connected to the driving transmission shaft 110 through steering gears. The two driven transmission shafts 111 are respectively connected to the lifting screws 107 on the two bottom plates 101 through steering gears.

[0028] The GIS device 2 belongs to large indoor equipment, which is generally integrated on a mounting plate. The length and width of the whole device are generally greater than the length of the flatbed transporter 3. During transportation, it is first transported to a designated indoor position by the flatbed transporter 3. Generally, two corresponding equipment towing rods will be set at this position. The flatbed transporter 3 can run between the two equipment towing rods to prepare for the subsequent separation of the equipment transportation device.

[0029] During the lifting process, the servo motor 109 drives the driving transmission shaft 110 to rotate through its motor shaft and corresponding gears. The driving transmission wheel drives the driven transmission shafts 111 to rotate through corresponding steering gears, such as two meshing bevel gears. Similarly, the two driven transmission shafts 111 respectively drive the two lifting screws 107 on the two bottom plates 101 to rotate. As the lifting screws 107 rotate, the lifting frame 102 moves up and down to drive the GIS device 2 to move up and down through the equipment support plate 105, thereby completing the convenient installation of the GIS device 2. At the same time, for the installation and positioning of the GIS device 2 realized by this kind of electric equipment, there will be no horizontal movement during the handling process, but a straight up and down handling, which has higher positioning accuracy compared with manual handling or other handling methods.

[0030] To prevent the lifting and positioning assembly 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 device 2 is at the center position of the lifting and positioning assembly 1, ensuring balanced forces at both ends of the unilateral lifting and positioning assembly 1 and also ensuring the overall handling balance of the two-sided lifting and positioning assemblies 1.

[0031] Specifically, the width positioning mechanism includes two positioning plates 112 installed on the frame body 104 that can move towards or away from each other in the horizontal plane along the width direction of the device. A positioning portion is formed between the two positioning plates 112 to relatively position the end of the device at the center position of the frame body 104 based on the width of the device. A positioning plate driving mechanism is installed on the frame body 104. The positioning plate driving mechanism includes a positioning screw 113 with its axis along the width direction of the device and a positioning plate driving 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 installed on the positioning plate mounting seat 114, and the other end extends towards the device inlet opening end 103. Corresponding chutes are also provided on the positioning plate mounting seat 114, and slide rails matching the chutes are arranged on the frame body 104 along the axial direction of the positioning screw 113.

[0032] The lifting and positioning assembly 1 further 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 driving motor 132 is connected to the width positioning branch.

[0033] During the working process, the staff can obtain the number of rotation turns of the positioning plate driving motor 132 based on the width of the mounting plate of the GIS device 2. A corresponding input display screen can be set in the control system. By inputting the width of the mounting plate of the GIS device 2, the data processing unit in the control system can automatically obtain the number of rotation turns of the positioning plate driving motor 132 according to the pitch of the positioning screw 113 and the width of the mounting plate of the GIS device 2, that is, the linear displacement of the positioning plate mounting seat 114. As a result, the two positioning plates 112 can accurately move to positions suitable for different widths of the GIS device 2, so as to form a positioning portion at a suitable position, ensuring that the end of the GIS device 2 can be at the center position of the lifting and positioning assembly 1 and preventing the situation of imbalance at both ends when lifting the GIS device 2.

[0034] This embodiment further includes a positioning plate calibration mechanism. The positioning plate calibration mechanism includes a calibration scale line 115 provided on the frame body 104 and located above the positioning screw 113, and a calibration benchmark 116 that moves with the positioning plate 112. A long slot 117 is provided on the frame body 104 along the calibration scale line 115 for the upper end of the calibration benchmark 116 to pass through. The lower end of the calibration benchmark 116 is connected to the positioning plate mounting seat 114. Specifically, a threaded hole is provided on the positioning plate mounting seat 114, and the bottom of the calibration rod is threadedly connected to this threaded hole. The setting of the positioning plate calibration mechanism enables the operator to more intuitively observe whether the positioning part is at the central position of the lifting and positioning assembly 1, and at the same time, it can directly record this position. So that when facing equipment mounting plates of the same width subsequently, the positioning plate 112 can be directly adjusted to the required position manually, enabling it to better face different situations, such as when the positioning plate driving motor 132 fails to work due to a certain unexpected situation or when the display screen cannot input the corresponding width value, etc.

[0035] In this embodiment, in order to enable the operator to more intuitively observe whether the lifting and positioning assembly 1 is pushed in place when pushing in the end of the equipment, a depth positioning mechanism is also provided. The depth positioning mechanism includes an indicator light 118 provided on the lifting frame 102 and a cascading detection mechanism for generating an indication instruction sent to the indicator light 118. The cascading 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 access the main power supply branch when both detection switches 119 are in the closed state to generate an indication instruction.

[0036] Among them, the cascading detection mechanism further includes two switch mounting seats respectively installed on the two positioning plates 112. The switch mounting seat includes a fixed plate 120 and a movable plate 121 that can move towards or away from the fixed plate 120. A connecting column passing through the movable plate 121 is connected between the movable plate 121 and the fixed plate 120, and a return spring for resetting the movable plate 121 is provided on the connecting column. The fixed plate 120 and the movable plate 121 are arranged parallel to each other and the 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; a first contact piece 123 and a second contact piece 124 are respectively provided on the fixed plate 120 and the movable plate 121. The first contact piece 123 and the second contact piece 124 are respectively arranged at the upper end surfaces of the movable plate 121 and the fixed plate 120. The movable plate 121 can move to a position where the first contact piece 123 is in contact with the second contact piece 124 to close the detection switch 119.

[0037] During the process of pushing the lifting and positioning assembly 1 into the end of the device, the device mounting plate will squeeze the movable plate 121, causing it to move towards the fixed plate 120, and then making the first contact piece 123 contact the second contact piece 124 to close the detection switch 119. When both detection switches 119 are closed, it indicates that the lifting and positioning assembly 1 has been pushed in place. At this time, the detection switch 119 generates an indication instruction, and the indicator light 118 lights up. The staff can intuitively judge whether it has been pushed in place based on whether the indicator light 118 is on. And because both detection switches 119 need to be closed to make the indicator light 118 light up, it can further judge whether the positioning part is accurately positioned and whether the device is at the central position of the positioning part.

[0038] In this embodiment, a guide plate 125 is connected to the end of the positioning plate 112 far from the positioning plate mounting seat 114. The setting of the guide plate 125 can achieve the guiding effect during the process of pushing the lifting and positioning assembly 1 into the end of the device, enabling the device 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 a rubber outer surface are also provided on both the guide plate 125 and the positioning plate 112 to reduce the wear on the surface of the device mounting plate.

[0039] In addition, in this embodiment, a rotatable first connecting shaft 126 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. A torsion spring 128 for driving the guide plate 125 to flip away from the positioning part is provided on the first connecting shaft 126. The setting of the torsion spring 128 can make the guide plate 125 automatically flip outwards, and the end of the guide plate 125 far from the positioning plate 112 can rest on the frame body 104, and under the limiting action of the frame body 104, the guide plate 125 automatically flips outwards to the maximum angle, so that the operator does not need to overly consider whether the positioning part is aligned with the device mounting plate during the process of pushing the lifting and positioning assembly 1, but naturally guides it into the positioning part.

[0040] A receiving groove 129 is provided on the end face of the positioning plate 112 facing away from the positioning part. The guide plate 125 can be flipped into the receiving groove 129. 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 are provided on the positioning plate mounting seat 114.

[0041] 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. A plurality of positioning holes 134 are evenly arranged circumferentially on the outer side wall of the positioning post 133. It also includes a positioning bolt 135 whose end can be inserted into the positioning holes 134. By cooperating the positioning bolt 135 with different positioning holes 134, the rotational limitation of the first connecting shaft 126 or the second connecting shaft 130 can be achieved.

[0042] The setting of the first limiting mechanism 127 can 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 body 104, preventing the guide plate 125 from directly flipping into the receiving groove 129 and losing its guiding function. The positioning plate 112 is installed by means of a connecting shaft and a limiting mechanism, which can achieve that when the width of the equipment installation plate of the device reaches the width of the equipment entry opening end 103 of the frame body 104, at this time, the positioning plate 112 will occupy a certain space at the entry opening end. Therefore, for the equipment installation plate with such an extreme width, the operator can first receive the guide plate 125 in the receiving groove 129, then release the second limiting mechanism 131, so that the whole positioning plate 112 rotates to the rear side of the U-shaped frame, that is, the side opposite to the equipment entry opening end 103, so that the positioning plate 112 does not affect the entry of the equipment installation plate.

[0043] It is easy to understand that those skilled in the art can combine, split, reorganize, etc. the embodiments of the present application based on one or several embodiments provided by the present application to obtain other embodiments, and these embodiments do not exceed the protection scope of the present application.

[0044] In summary, the above are only the preferred embodiments of the present invention, and all equivalent changes and modifications made according to the scope of the patent application of the present invention shall fall within the scope covered by the patent of the present invention.

Claims

1. Lifting and positioning device for indoor installation of GIS equipment, characterized in that: It includes two lifting and positioning components (1) with the same structure and used in relative cooperation. The lifting and positioning component (1) includes a base component. The base component includes two base plates (101) distributed at both ends of the lifting and positioning component (1). A lifting frame (102) capable of moving up and down is provided on the two base plates (101). The lifting frame (102) includes a frame body (104) in a U-shaped frame structure, and one end forms an equipment entry opening end (103). When the two lifting and positioning components (1) are used in cooperation, the equipment entry opening ends (103) of the frame bodies (104) are arranged oppositely; the lifting frame (102) further includes an equipment support plate (105) and universal wheels (106) arranged at the bottom of the frame body (104). When the lifting frame (102) descends to the lowest point, the lower end surface of the universal wheels (106) is lower than the lower end surface of the base. A width positioning mechanism is further installed on the lifting frame (102). The width positioning mechanism includes two positioning plates (112) installed on the frame body (104) and capable of moving towards or away from each other in the horizontal plane along the width direction of the equipment. A positioning part is formed between the two positioning plates (112) for relatively positioning the end of the equipment at the central position of the frame body (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 component (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 lifting screw rods (107) vertically arranged with their bottoms installed on the base component, a threaded sleeve rod (108) fixed on the lifting frame (102) and threadedly connected with the lifting screw rods (107), and a lifting screw rod driving mechanism for driving the four lifting screw rods (107) to rotate synchronously.

3. The lifting and positioning device for indoor installation of GIS equipment according to claim 2, characterized in that: The lifting screw rod driving mechanism includes a servo motor (109) fixedly installed on the lifting frame (102) and a lifting screw rod transmission mechanism connected with the servo motor (109). The servo motor (109) is arranged at the middle position between the two base plates (101). The lifting screw rod transmission mechanism includes a horizontally arranged main driving shaft (110) and two driven transmission shafts (111) connected with the main driving shaft (110) through steering gears. The two driven transmission shafts (111) are respectively connected with the lifting screw rods (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 driving mechanism is installed on the frame body (104). The positioning plate driving mechanism includes a positioning screw rod (113) axially arranged along the width direction of the equipment and a positioning plate driving motor (132) for driving the positioning screw rod (113) to rotate. Two positioning plate mounting seats (114) with opposite thread directions are threadedly connected on the positioning screw rod (113). One end of the positioning plate (112) is installed on the positioning plate mounting seat (114), and the other end extends towards the equipment entry opening end (103).

5. The lifting and positioning device for indoor installation of GIS equipment according to claim 4, characterized in that: It further includes a positioning plate calibration mechanism. The positioning plate calibration mechanism includes a calibration scale line (115) disposed on the frame body (104) and above the positioning screw (113), and a calibration benchmark (116) that moves along with the positioning plate (112). A long slot (117) for the upper end of the calibration benchmark (116) to pass through is provided on the frame body (104) along the calibration scale line (115), and the lower end of the calibration benchmark (116) is connected to the positioning plate mounting seat (114).

6. The lifting and positioning device for indoor installation of GIS equipment according to claim 4, characterized in that: The lifting and positioning assembly (1) 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 with a width positioning branch, and the positioning plate driving motor (132) is connected to the width positioning branch.

7. The lifting and positioning device for indoor installation of GIS equipment according to claim 6, characterized in that: It further includes a depth positioning mechanism. The depth positioning mechanism includes an indicator light (118) disposed on the lifting frame (102) and a cascaded detection mechanism for generating an indication instruction 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 in the closed state to generate an indication instruction.

8. The lifting and positioning device for indoor installation of GIS equipment according to claim 7, characterized in that: The cascaded detection mechanism further includes two switch mounting seats respectively installed on the two positioning plates (112). The switch mounting seat includes a fixed plate (120) and a movable plate (121) that can move towards or away from the fixed plate (120). The fixed plate (120) and the movable plate (121) are arranged in parallel and the 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); a first contact piece (123) and a second contact piece (124) are respectively provided on the fixed plate (120) and the movable plate (121), and the movable plate (121) can move to a position where the first contact piece (123) is in contact with the second contact piece (124) to close the detection switch (119).

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

10. The lifting and positioning device for indoor installation of GIS equipment according to claim 9, characterized in that: A receiving groove (129) is provided on the end face of the positioning plate (112) facing away from the positioning part. The guide plate (125) can flip into the receiving groove (129). 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) are provided on the positioning plate mounting seat (114).

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