Adjustable fixing device for an electricity metering box

Abstract

The application provides an adjustable fixing device for an electric energy metering box, and relates to the technical field of electric energy metering box installation and fixing. The adjustable fixing device comprises an adjustable support, and the adjustable support comprises a pair of main support rods arranged in an up-down manner, and an adjusting connecting rod fixedly installed on the inner sides of the two main support rods. The adjustable support comprises a pair of adjusting hollow rods, and the adjusting hollow rods are longitudinally and slidingly installed between the adjusting connecting rods on the two main support rods. The two ends of the main support rods are hingedly connected with side support rods through connecting short rods. The other ends of the side support rods are provided with mounting grooves. The mounting grooves on the side support rods are fixedly installed with hoop connecting plates. The hoop connecting plates can be installed in a forward or reverse direction according to requirements. Hoop clamping jaws are hingedly connected to the hoop connecting plates. Elastic hoops are movably installed between the hoop clamping jaws located at the two ends of the same main support rod. According to the application, the main support rods and the side support rods can be used to install hoops at the rear ends of the side support rods according to requirements, and the installation positions can be selected according to convenience.

Description

Technical Field

[0001] This invention relates to the field of electrical energy metering box installation and fixing technology, and in particular to an adjustable fixing device for electrical energy metering boxes. Background Technology

[0002] An electricity metering box is a specialized enclosure used to install electricity metering devices, protect electrical components, and connect wires. It is widely used in residential communities, industrial plants, rural power grids, and outdoor power distribution lines. The installation and fixing method of the electricity metering box directly affects its safety, metering accuracy, and ease of maintenance. In practical engineering applications, the installation environment of electricity metering boxes is complex and diverse. Common installation scenarios include wall mounting on buildings, mounting on cylindrical poles such as utility poles or concrete poles, and the installation conditions vary significantly depending on the scenario.

[0003] For wall-mounted installations, prefabricated brackets or expansion bolts are typically used to fix the metering box's back mounting plate to the wall. In these methods, the brackets are often integrally welded structures with fixed mounting hole positions and support spacing, only compatible with metering boxes of specific sizes. When replacing a metering box with a different height, it's often necessary to fabricate a new bracket or drill new holes in the wall, increasing construction costs and installation time. Repeated drilling can also damage the wall structure. Furthermore, existing wall-mounted brackets generally lack lateral adjustment capabilities, preventing flexible adjustment of the metering box's horizontal position according to actual wiring requirements. If a positional deviation is found after installation, disassembly and reinstallation are necessary, a cumbersome process.

[0004] For installations on utility poles or cylindrical poles, clamps are typically used to secure the metering box to the pole. A common practice is to use multiple individual clamps, each tightened onto the pole, and then attach the metering box to the clamps via connectors. However, this installation method usually results in a rigid connection between the clamps and the metering box, lacking angle adjustment capability. If the utility pole itself is tilted or the metering box's orientation needs to be adjusted after installation, the clamps must be loosened for readjustment, which is inconvenient and poses safety hazards.

[0005] Existing power meter box fixing devices suffer from numerous problems in their structural design, including poor adaptability, limited adjustment functions, incompatibility between wall-mounted and pole-mounted installations, and inconvenience in adjusting the installation angle. Therefore, there is an urgent need to develop a structurally sound, flexible, versatile, and reliable adjustable power meter box fixing device to meet the needs of different installation scenarios. Summary of the Invention

[0006] To address the aforementioned technical problems, this invention provides an adjustable fixing device for an electricity metering box, including an adjustable bracket. An electricity metering box is movably mounted on the front end of the adjustable bracket. The adjustable bracket includes a pair of main support rods arranged vertically. Adjustable connecting rods are fixedly installed on the inner sides of the two main support rods. The adjustable bracket also includes a pair of adjustable hollow rods, which are longitudinally slidably mounted between the adjusting connecting rods on the upper and lower main support rods. Side support rods are hinged to both ends of the main support rods via connecting short rods. The other end of each side support rod has a mounting groove, and a clamp connecting plate is fixedly installed in the mounting groove. The clamp connecting plate can be installed in either direction as needed. Clamping claws are hinged to the clamp connecting plate, and an elastic clamp is movably mounted between the clamping claws located at both ends of the same main support rod.

[0007] Furthermore, the main support rod and the side support rod are provided with adjustment grooves, and a pair of support components are slidably installed in the adjustment groove of each main support rod. The power metering box is fixedly installed at the front end of multiple support components.

[0008] Furthermore, the support assembly includes a support circular plate, with a pair of adjusting rods hinged to both sides of the rear end of the support circular plate. Support rollers are laterally rotatably mounted on the bottom of the adjusting rods, and the support rollers are rotatably mounted in adjusting grooves on the main support rod and the side support rod. Adjusting sliders are laterally rotatably mounted on the bottom of the adjusting rods, and adjusting screws are screwed together between the adjusting sliders on the two adjusting rods. The threads at both ends of the adjusting screws are in opposite directions.

[0009] Furthermore, the adjusting screw shaft is provided with a multi-faceted through hole, and the support assembly includes an adjusting key rod, which is laterally slidably installed in the through hole on the adjusting screw. The length of the adjusting key rod can pass through two adjusting screws on the same main support rod.

[0010] Furthermore, the rear end of the energy metering box is fixedly equipped with multiple connecting slots, which correspond to the positions of the supporting circular plates installed on the two main support rods and slide in cooperation with the supporting circular plates. The inner side of the energy metering box is provided with multiple connecting holes, which correspond to the positions of the connecting slots. The front end of the supporting circular plate is provided with assembly holes, which correspond to the connecting holes. The energy metering box is fixedly installed on the front end of the supporting circular plate by bolts.

[0011] Furthermore, a manual adjustment rod is longitudinally rotatably installed inside the hollow adjustment rod. The manual adjustment rod has threads at both ends, and the threads on the manual adjustment rod cooperate with the adjustment connecting rod screws on the upper and lower main support rods.

[0012] Furthermore, the upper and lower sides of the main support rod adjusting slide are respectively horizontally hinged with limiting connecting plates. The upper and lower sides of the side support rod adjusting slide near the main support rod are provided with positioning grooves. The limiting connecting plate is L-shaped with a bent short plate at the bottom of the long plate. The bent part of the limiting connecting plate slides in cooperation with the positioning groove on the main support rod. The long plate of the limiting connecting plate is provided with bolt holes for installing bolts between it and the side support rod. The short plate of the limiting connecting plate is provided with bolt holes for installing bolts between them, thus fixing the two limiting connecting plates at the same end of the main support rod together.

[0013] Furthermore, the outer ring of the elastic clamp is provided with an annular adjustment groove, the clamp claw is V-shaped, and two pairs of rollers are fixedly installed at the front end of the clamp claw. The rollers at the front end of the clamp claw roll in cooperation with the annular adjustment groove of the outer ring of the elastic clamp.

[0014] Furthermore, a limiting protrusion is fixedly installed on the clamp connecting plate. When the clamp connecting plate is installed in the forward direction, the limiting protrusion on the clamp connecting plate faces the rear side of the adjusting connecting rod. The clamp claw and the limiting protrusion on the clamp connecting plate are hinged by a cylindrical bolt. When the clamp connecting plate is installed in the reverse direction, the limiting protrusion on the clamp connecting plate faces the front side of the adjusting connecting rod.

[0015] The advantages of this invention compared with the prior art are: (1) This invention provides adjustable side support rods on both sides of the main support rod. Hoops can be installed at the rear end of the side support rods as needed. The installation can be chosen to be on the wall or a cylindrical rod according to convenience, thus improving the applicability of the fixing device; (2) This invention provides adjustable height support components. After the electricity metering box is installed, the height of the corresponding support plate can be adjusted to straighten the tilted electricity metering box, making it easy to check; (3) This invention provides moving space for the support components through the adjustment grooves on the main support rod and the side support rods. After the electricity metering box is installed, the sliding position of the electricity metering box can be adjusted as needed, making it easy to check or place in a safe position. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the top structure of the present invention.

[0017] Figure 2 This is a schematic diagram of the rear structure of the present invention.

[0018] Figure 3 This is a schematic diagram of the overall structure of the present invention.

[0019] Figure 4 This is a schematic diagram of the assembly structure of the support component of the present invention.

[0020] Figure 5 This is a schematic diagram of a partial cross-sectional view of the side support rod of the present invention.

[0021] Figure 6 This is a schematic diagram of the clamping claw assembly structure of the present invention.

[0022] Figure 7 This is a schematic diagram of the assembly structure of the limiting connecting plate of the present invention.

[0023] Figure 8 for Figure 4 Enlarged structural diagram at point A1.

[0024] Reference numerals: 1-Adjustable bracket; 2-Electricity metering box; 3-Support assembly; 4-Connecting groove; 5-Connecting hole; 101-Main support rod; 102-Side support rod; 103-Adjusting connecting rod; 104-Adjusting hollow rod; 105-Connecting short rod; 106-Elastic clamp; 107-Clamp connecting plate; 108-Manual adjustment rod; 109-Limit connecting plate; 110-Clamp gripper; 301-Supporting circular plate; 302-Adjusting connecting rod; 303-Adjusting screw; 304-Adjusting slider; 305-Supporting roller; 306-Adjusting key lever. Detailed Implementation

[0025] The technical solution provided by the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0026] like Figures 1 to 8 As shown, an adjustable fixing device for an electricity metering box includes an adjustable bracket 1. An electricity metering box 2 is movably mounted on the front end of the adjustable bracket 1. The adjustable bracket 1 includes a pair of main support rods 101 arranged vertically. Adjustable connecting rods 103 are fixedly installed inside the two main support rods 101. The adjustable bracket 1 also includes a pair of adjustable hollow rods 104. The adjustable hollow rods 104 are longitudinally slidably mounted between the adjusting connecting rods 103 on the upper and lower main support rods 101. A manual adjustment mechanism is longitudinally rotatably mounted inside the adjustable hollow rods 104. The manual adjustment rod 108 has threads at both ends. The threads on the manual adjustment rod 108 are engaged with the lead screws of the adjusting connecting rods 103 on the upper and lower main support rods 101. When in use, rotating the manual adjustment rod 108 causes the adjusting connecting rods 103 on both ends of the hollow rod 104 to slide longitudinally within the hollow rod 104 through the threads at both ends. This is used to adjust the distance between the two main support rods 101 according to the height of the electricity metering box, so as to facilitate more stable support and fixation of the electricity metering box.

[0027] like Figures 1 to 8As shown, the two ends of the main support rod 101 are hinged to the side support rods 102 via connecting short rods 105. The main support rod 101 and the side support rods 102 are provided with adjusting grooves. A pair of support components 3 are laterally slidably installed in the adjusting grooves on each main support rod 101. The electricity metering box 2 is fixedly installed at the front end of multiple support components 3. The support components 3 can slide laterally in the adjusting grooves on the main support rod 101 and the side support rods 102 to adjust the lateral position of the electricity metering box 2.

[0028] like Figures 1 to 8 As shown, the other end of the side support rod 102 is provided with a mounting groove. A clamp connecting plate 107 is fixedly installed in the mounting groove of the side support rod 102 by bolts. A limiting protrusion is fixedly installed on the clamp connecting plate 107. The clamp connecting plate 107 can be installed in both directions as needed. When the clamp connecting plate 107 is installed in the forward direction, the limiting protrusion on the clamp connecting plate 107 faces the rear side of the adjusting connecting rod 103. At this time, the clamp clamp 110 can be hinged to the limiting protrusion of the clamp connecting plate 107. The limiting protrusion on the clamp connecting plate 107 is hinged to the clamp by a cylindrical bolt. An elastic clamp 106 is movably installed between the clamp claws 110 at both ends of the same main support rod 101. There are two elastic clamps 106 in total. The distance between the elastic clamps 106 can be adjusted synchronously with the distance between the two main support rods 101 through the connection of the clamp connecting plate 107. The elastic clamps 106 can be installed around the utility pole or cement pole and fixed on it with bolts.

[0029] like Figures 1 to 8 As shown, when the clamp connecting plate 107 is installed in reverse, the limiting protrusion on the clamp connecting plate 107 faces the front side of the adjusting connecting rod 103, which can provide a limit for the sliding adjustment of the support component 3 and prevent the support component 3 from falling out of the adjusting groove on the main support rod 101 and the side support rod 102.

[0030] like Figures 1 to 8As shown, the upper and lower sides of the adjusting slide of the main support rod 101 are respectively horizontally hinged with limiting connecting plates 109. The adjusting slide of the side support rod 102 has positioning grooves on the upper and lower sides of the end near the main support rod 101. The limiting connecting plate 109 is L-shaped with a bent short plate at the bottom of the long plate. The bent part on the limiting connecting plate 109 slides in cooperation with the positioning groove on the main support rod 101. The long plate of the limiting connecting plate 109 has bolt holes for installing bolts between it and the side support rod 102. The short plate of the limiting connecting plate 109 has bolt holes for installing bolts between itself and the side support rod 102. The two limiting connecting plates 109 at the same end of the main support rod 101 are fixedly connected together. When the side support rods 102 on both sides are fixed together, the two limiting connecting plates 109 at the same end of the main support rod 101 are fixedly connected together. When the main support rod 101 is aligned with the main support rod 101, the limiting connecting plates 109 on both sides of the adjusting slide of the main support rod 101 are flipped up and down respectively, so that the short plates on the limiting connecting plates 109 on both sides slide into the positioning grooves on both sides of the side support rod 102. The long plate of the limiting connecting plate 109 is fixed to the inner wall of the adjusting slide of the side support rod 102 by bolts. The side support rod 102 is fixed to the two ends of the main support rod 101 in a straight line and is no longer flipped. At this time, the main support rod 101 with the adjusted spacing can be fixed to the wall by bolts, and the power metering box 2 is installed on the support component 3 that is movably installed in the main support rod 101. At the same time, the range of motion of the support component 3 is limited by the reverse installation of the clamp connecting plate 107.

[0031] like Figures 1 to 8 As shown, when the support assembly 3 needs to be installed on a utility pole or other cylindrical pole, the side support rod 102 is flipped to the rear of the main support rod 101, and the clamp connecting plate 107 is installed facing forward. Clamping claws 110 are installed on the limiting protrusion of the clamp connecting plate 107. Elastic clamps 106 are installed between the clamping claws 110 on both sides of the same main support rod 101. The elastic clamps 106 are fixed to the utility pole with bolts, allowing the main support rod 101 to be installed on the utility pole. Simultaneously, the side support rod 102 is flipped to the rear of the main support rod 101. The limiting connecting plates 109 on the upper and lower sides of the adjusting slide of the main support rod 101 are flipped so that the two limiting connecting plates 109 are at a vertical angle and the short plates on the two limiting connecting plates 109 are in contact and engaged. The short plates on the two limiting connecting plates 109 are fixedly connected by bolts, so that the two limiting connecting plates 109 are installed as limiting plates at both ends of the main support rod 101, limiting the support component 3 that is movably installed inside the main support rod 101 and preventing the support component 3 from falling off the main support rod 101.

[0032] like Figures 1 to 8As shown, the support assembly 3 includes a support circular plate 301. Multiple connecting slots 4 are fixedly installed at the rear end of the power metering box 2. The connecting slots 4 correspond to the positions of the support circular plates 301 installed on the two main support rods 101 and slide in cooperation with the support circular plates 301. A pair of adjusting rods 302 are hinged to both sides of the rear end of the support circular plate 301. Support rollers 305 are laterally rotatably mounted at the bottom of the adjusting rods 302. The support rollers 305 are rotatably mounted in the adjusting grooves on the main support rods 101 and the side support rods 102. Adjusting sliders 304 are laterally rotatably mounted at the bottom of the adjusting rods 302. An adjusting screw 303 is screwed between the adjusting sliders 304 on the two adjusting rods 302. The threads at both ends of the adjusting screw 303 are in opposite directions. The adjusting screw 303 is used to adjust the distance between the two support rollers 305, thereby adjusting the included angle between the two adjusting rods 302, adjusting the distance between the support circular plate 301 and the support rollers 305, and changing the height supported by the support circular plate 301.

[0033] like Figures 1 to 8 As shown, the adjusting screw 303 has a multi-faceted through hole at its shaft. The support assembly 3 includes an adjusting key rod 306, which is laterally slidably installed in the through hole on the adjusting screw 303. The length of the adjusting key rod 306 can pass through two adjusting screws 303 on the same main support rod 101. When the adjusting key rod 306 passes through the through hole on the two adjusting screws 303 on the same main support rod 101, by rotating the adjusting key rod 306, the adjusting screw 303 can be rotated, thereby adjusting the distance between the two support rollers 305, and thus adjusting the height of the support circular plate 301. According to the above steps, the support assembly 3 on the other main support rod 101 is adjusted synchronously to adjust the height of the power metering box 2 supported by the support circular plate 301.

[0034] like Figures 1 to 8 As shown, when the adjusting key lever 306 passes through the through hole of a single adjusting screw 303 on the same main support rod 101, turning the adjusting key lever 306 causes the single adjusting screw 303 to rotate, adjusting the height of the single support plate 301. According to the above steps, the support assembly 3 on the same side of the other main support rod 101 is adjusted simultaneously. In this way, the angle of the electricity metering box 2 during assembly is adjusted according to the different heights of the support plates 301 on both sides of the main support rod 101. This allows the angle of the electricity metering box 2 to be adjusted when it is assembled on an inclined utility pole, so that the electricity metering box 2 can be adjusted to an angle that is convenient for use.

[0035] like Figures 1 to 8 As shown, the inner side of the power metering box 2 is provided with multiple connection holes 5, the position of the connection holes 5 corresponds to the connection groove 4, the front end of the support circular plate 301 is provided with an assembly hole, the assembly hole corresponds to the connection hole 5, and the power metering box 2 is fixedly installed on the front end of the support circular plate 301 by bolts.

[0036] like Figures 1 to 8 As shown, the elastic clamp 106 has an annular adjustment groove on its outer ring, and the clamp claw 110 is V-shaped. Two pairs of rollers are fixedly installed at the front end of the clamp claw 110. The rollers at the front end of the clamp claw 110 roll into the annular adjustment groove on the outer ring of the elastic clamp 106. After the power meter box 2 is installed on the utility pole, the power meter box 2 can be rotated to a convenient viewing position and fixed by the rolling engagement of the clamp claw 110 and the annular adjustment groove on the elastic clamp 106. Furthermore, the power meter box 2 can be rotated to other positions for protection and viewing at any time after changes in the surrounding environment.

[0037] Working principle: When the electricity metering box 2 needs to be fixed to the wall, move the side support rod 102 to make it fit against the two ends of the clamp claw 110 so that it is in the same straight line as the main support rod 101. Then, move the limiting connecting plate 109 to flip it so that it fits against the inner wall of the adjusting slide groove of the side support rod 102. Then, fix the limiting connecting plate 109 and the side support rod 102 with bolts so that the side support rod 102 is fixed at both ends of the main support rod 101 and can no longer be flipped. Then, rotate the manual adjusting rod 108 to adjust the distance between the two main support rods 101, and fix the main support rod 101 with the adjusted distance to the wall with bolts.

[0038] At the same time, the clamp connecting plate 107 is installed in the opposite direction, so that the limiting protrusion on the clamp connecting plate 107 faces the front end of the side support rod 102 and is located in the adjusting groove on the side support rod 102, thereby limiting the range of motion of the support component 3 and preventing the support component 3 from falling off.

[0039] Then, according to the spacing between the connecting slots 4 on the power metering box 2, move the two support components 3 on the same main support rod 101 to adjust the distance between the two support components 3. Then, pass the adjusting key rod 306 through the two adjusting screws 303 on the same main support rod 101 and rotate the adjusting key rod 306 to adjust the height of the support circular plate 301. Then, hang the connecting slot 4 on the rear side of the power metering box 2 on the support circular plate 301, and fix the power metering box 2 on the support circular plate 301 by passing the bolt through the connecting hole 5 on the inner side of the power metering box 2.

[0040] When assembling the electricity metering box 2 on the utility pole or cylindrical pole, install the clamp connecting plate 107 on the side support rod 102 in the forward direction, so that the limiting protrusion on the clamp connecting plate 107 faces the rear side of the side support rod 102, and hinge the clamp claw 110 on the limiting protrusion. Then, flip the side support rod 102 backward on the main support rod 101, install the elastic clamp 106 between the two clamp claws 110 on the same main support rod 101, and fix the elastic clamp 106 on the utility pole with bolts. Then, flip the limiting connecting plates 109 at both ends of the main support rod 101, and fix the two mutually contacting limiting connecting plates 109 with bolts, so that the openings at both ends of the adjusting groove of the main support rod 101 restrict the support assembly 3 through the limiting connecting plates 109 to prevent the support assembly 3 from sliding out. Then, install the electricity metering box 2 on the support assembly 3 according to the previous steps.

[0041] If the utility pole or other cylindrical pole has a certain tilt angle, pass the adjusting key lever 306 through the adjusting screw 303 on one side of the main support rod 101, and rotate the adjusting key lever 306 to adjust the height of the support plate 301. If the adjusted support plate 301 is at the lowest point of the tilt, raise it; if it is at the highest point, lower it. Simultaneously adjust the support plate 301 at the same position on the other main support rod 101 to adjust the energy metering box 2 to an angle that is easy to view. At the same time, during daily use, the energy metering box 2 can be moved to make the clamping claw 110 roll on the elastic clamp 106, so that the energy metering box 2 can rotate around the cylindrical pole and rotate it to the desired position for easy viewing or to place it in a safe position to prevent damage to the energy metering box 2.

Claims

1. An adjustable fixing device for an electricity metering box, comprising an adjustable bracket (1), an electricity metering box (2) movably mounted at the front end of the adjustable bracket (1), the adjustable bracket (1) comprising a pair of main support rods (101) arranged vertically, an adjusting connecting rod (103) fixedly mounted on the inner side of the two main support rods (101), the adjustable bracket (1) comprising a pair of adjusting hollow rods (104), the adjusting hollow rods (104) being longitudinally slidably mounted between the adjusting connecting rods (103) on the upper and lower main support rods (101), characterized in that, The main support rod (101) has side support rods (102) hinged at both ends by connecting short rods (105). The other end of the side support rod (102) is provided with an installation groove. A clamp connecting plate (107) is fixedly installed in the installation groove on the side support rod (102). The clamp connecting plate (107) can be installed in the forward and reverse directions as required. A clamp claw (110) is hinged on the clamp connecting plate (107). An elastic clamp (106) is movably installed between the clamp claws (110) at both ends of the same main support rod (101). The main support rod (101) and the side support rod (102) are provided with adjustment grooves. A pair of support components (3) are slidably installed in the adjustment groove of each main support rod (101). The power metering box (2) is fixedly installed at the front end of multiple support components (3).

2. The adjustable fixing device for an electricity metering box according to claim 1, characterized in that, The support assembly (3) includes a support circular plate (301). A pair of adjusting rods (302) are hinged to both sides of the rear end of the support circular plate (301). A support roller (305) is rotatably mounted on the bottom of the adjusting rod (302). The support roller (305) is rotatably mounted in the adjusting groove on the main support rod (101) and the side support rod (102). An adjusting slider (304) is rotatably mounted on the bottom of the adjusting rod (302). An adjusting screw (303) is assembled between the adjusting sliders (304) on the two adjusting rods (302). The threads at both ends of the adjusting screw (303) are in opposite directions.

3. The adjustable fixing device for an electricity metering box according to claim 2, characterized in that, The adjusting screw (303) has a multi-faceted through hole at its shaft center. The support assembly (3) includes an adjusting key rod (306). The adjusting key rod (306) is laterally slidably installed in the through hole on the adjusting screw (303). The length of the adjusting key rod (306) can pass through two adjusting screws (303) on the same main support rod (101).

4. The adjustable fixing device for an electricity metering box according to claim 3, characterized in that, The power metering box (2) has multiple connecting slots (4) fixedly installed at its rear end. The connecting slots (4) correspond to the positions of the support circular plates (301) installed on the two main support rods (101) and slide with the support circular plates (301). The power metering box (2) has multiple connecting holes (5) on its inner side. The positions of the connecting holes (5) correspond to the connecting slots (4). The support circular plate (301) has an assembly hole at its front end. The assembly hole corresponds to the connecting hole (5). The power metering box (2) is fixedly installed at the front end of the support circular plate (301) by bolts.

5. The adjustable fixing device for an electricity metering box according to claim 1, characterized in that, A manual adjustment rod (108) is longitudinally rotatably installed inside the hollow adjustment rod (104). The upper and lower ends of the manual adjustment rod (108) are threaded, and the thread on the manual adjustment rod (108) is engaged with the screw of the adjustment connecting rod (103) on the upper and lower main support rods (101).

6. The adjustable fixing device for an electricity metering box according to claim 1, characterized in that, The upper and lower sides of the adjusting slide of the main support rod (101) are respectively horizontally hinged to limit connecting plates (109). The upper and lower sides of the adjusting slide of the side support rod (102) near the main support rod (101) are provided with positioning grooves. The limit connecting plate (109) is an L-shaped long plate with a bent short plate at the bottom. The bent part on the limit connecting plate (109) slides with the positioning groove on the main support rod (101). The long plate of the limit connecting plate (109) is provided with bolt holes. The bolt holes on the limit connecting plate (109) are used to install bolts between it and the side support rod (102). The short plate of the limit connecting plate (109) is provided with bolt holes. The bolt holes on the short plate of the limit connecting plate (109) are used to install bolts between them. The two limit connecting plates (109) at the same end of the main support rod (101) are fixedly connected together.

7. The adjustable fixing device for an electricity metering box according to claim 1, characterized in that, The elastic clamp (106) has an annular adjustment groove on its outer ring. The clamp claw (110) is V-shaped. Two pairs of rollers are fixedly installed at the front end of the clamp claw (110). The rollers at the front end of the clamp claw (110) roll in cooperation with the annular adjustment groove on the outer ring of the elastic clamp (106).

8. The adjustable fixing device for an electricity metering box according to claim 1, characterized in that, A limiting protrusion is fixedly installed on the clamp connecting plate (107). When the clamp connecting plate (107) is installed in the forward direction, the limiting protrusion on the clamp connecting plate (107) faces the rear side of the adjusting connecting rod (103). The clamp clamp (110) is hinged to the limiting protrusion on the clamp connecting plate (107) through a cylindrical bolt. When the clamp connecting plate (107) is installed in the reverse direction, the limiting protrusion on the clamp connecting plate (107) faces the front side of the adjusting connecting rod (103).

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