An adjustable height meter box

Abstract

This invention relates to the field of meter box technology, specifically to an adjustable-height meter box. An adjustable-height meter box includes a housing, a connecting mechanism, and an adjusting mechanism. The connecting mechanism includes an upper crossbar and a lower crossbar. The adjusting mechanism includes a drive assembly and two adjusting assemblies, each including a swing tube, a wire rope, and a pulley. The drive assembly drives the pulley to rotate forward, which in turn moves the housing upward via the wire rope. Once the housing reaches a predetermined height, the pulley stops rotating. When the housing needs to be removed or moved downward, the pulley rotates in the opposite direction, moving the housing downward via the wire rope. The height of the housing is arbitrarily adjustable and the adjustment is simple and convenient. This invention provides an adjustable-height meter box to solve the problems of existing meter boxes having difficulty in adjusting their height, poor flexibility, and the ease with which dust can enter the box, which is detrimental to electrical stability.

Description

Technical Field

[0001] This invention relates to the field of meter box technology, and more specifically to an adjustable-height meter box. Background Technology

[0002] An electricity meter box is a specialized enclosure used to centrally install electricity meters, circuit breakers, residual current devices (RCDs), and other power distribution equipment. It is a core device in the power system connecting user equipment to the power supply network. Its core functions include: electricity metering: recording user electricity consumption through the meter; circuit protection: preventing overload or short circuits through circuit breakers, fuses, etc.; safety management: isolating live parts to prevent electric shock or fire; and centralized management: facilitating meter reading, inspection, and maintenance by the power supply department. The enclosure uses ventilation components (such as vents at the top and bottom of the cabinet door) to achieve air circulation, preventing condensation buildup and reducing the risk of metal component corrosion and leakage current.

[0003] The main drawbacks of existing meter boxes are: Because meter boxes are typically installed in the middle of a pole and suspended in mid-air, installation, replacement, and maintenance usually require maintenance personnel to use a specialized ladder to reach them. This increases the difficulty of operating the meter boxes and poses safety concerns. Existing meter boxes use a fixed installation method, which lacks flexibility and is difficult to adjust in height. In actual use, installation and disassembly are difficult, thus delaying emergency repairs and increasing labor costs. This also leads to longer power outage times for users.

[0004] Existing meter boxes are difficult and unstable to fix on various surfaces (smooth, rough, flat, and column-shaped). The unevenness of the wall surface makes fixing the meter box challenging. Fixing the meter box to a wall or column surface also makes it difficult for the box to dissipate heat from the wall or its interior. This can accelerate the aging of electronic components, leading to metering errors or circuit breaker malfunctions.

[0005] For example, the invention patent with announcement number CN112698069B provides a novel outdoor pole-mounted combined low-voltage meter box. A guide mechanism is designed on the back of the meter box, working in conjunction with a built-in drive mechanism, facilitating the operation and adjustment of the meter box's position by staff from the bottom. However, since the meter box is located outdoors, its ventilation holes or surface will accumulate a large amount of dust and debris, which reduces overall heat dissipation efficiency, is detrimental to electrical stability, and can easily lead to short circuits, leakage, corrosion of the metal box, and deformation of the plastic box. Summary of the Invention

[0006] This invention provides an adjustable-height meter box to solve the problems of existing meter boxes having difficulty in adjusting their height, poor flexibility, and the ease with which dust can enter the meter box, which is detrimental to electrical stability.

[0007] The present invention provides an adjustable-height meter box, which adopts the following technical solution: An adjustable-height meter box includes a shell, a connecting mechanism, and an adjusting mechanism. The connecting mechanism includes an upper crossbar and a lower crossbar, both of which are arranged along a first direction, which is horizontal, and are both fixedly installed on the wall. The upper crossbar is located above the lower crossbar.

[0008] The adjustment mechanism includes a drive assembly and two adjustment assemblies, which are sequentially distributed along a first direction. Each adjustment assembly includes a swing tube, a wire rope, and a pulley. The upper end of each swing tube is mounted on an upper crossbar, allowing the swing tube to swing. Each swing tube has multiple vent holes, which are sequentially distributed along the axial direction of the swing tube. Along the first direction, multiple heat dissipation holes are provided on both sides of the outer casing, which are sequentially distributed along the vertical direction. The vent holes and heat dissipation holes are connected, and the number of vent holes is greater than the number of heat dissipation holes.

[0009] A pulley is rotatably mounted on the upper crossbar. One end of a steel wire rope is connected to the upper side of the housing, and the other end of the steel wire rope is wound around the pulley, passes through a swing tube, and connects to the lower side of the housing. The drive assembly drives the pulley to rotate. When the pulley rotates forward, it moves the housing upward via the steel wire rope; when the pulley rotates in the reverse direction, it allows the housing to move downward via the steel wire rope.

[0010] Furthermore, each adjusting component also includes a connecting block, on which a connecting post is fixedly mounted. The connecting post has an arc-shaped groove, coaxially arranged with the arc-shaped groove. Connecting grooves are respectively formed at both ends of the upper crossbar, and a limiting block is fixedly mounted in each connecting groove. Each connecting post is rotatably mounted in a connecting groove to adjust the relative position of the connecting block and the upper crossbar. After adjustment, the connecting block and the upper crossbar are locked by a first screw. Each limiting block is slidably mounted in an arc-shaped groove. The upper end of the swing tube is rotatably connected to the connecting block.

[0011] Two swing tubes are positioned on both sides of the outer casing along a first direction. Two first baffles are fixedly mounted on the connecting block, each positioned on one side of the connecting block. The adjustment assembly has a first state and a second state. In the first state, the two first baffles are sequentially distributed along a second direction, which is horizontal and perpendicular to the first direction. Along the second direction, the two sides of the outer casing are the first side and the second side, respectively, with the second side of the outer casing closer to the wall. A vent is located on one side of the swing tube along the second direction, and the vent is close to the first side of the outer casing. The swing tubes can swing along the first direction, and the lower ends of the two swing tubes can move away from or towards each other. In the second state, the two first baffles are sequentially distributed along the first direction, and the vent is located on one side of the swing tube along the first direction, and the vent is close to the outer casing. The swing tubes no longer swing along the first direction.

[0012] Furthermore, the drive assembly includes two transmission units. The two transmission units are respectively located at both ends of the upper crossbar. Each transmission unit includes a first ratchet, a first spring, a second ratchet, and a second spring. Each first ratchet is rotatably mounted on a swing tube, and the first spring connects the first ratchet and the swing tube. The axis of the sliding wheel is arranged along a second direction, and a gear ring is fixedly mounted on the sliding wheel, coaxially arranged with the sliding wheel. The first ratchet meshes with the gear ring. The second ratchet is rotatably mounted on the upper crossbar, located above the gear ring, and meshes with the gear ring. The second spring connects the second ratchet and the upper crossbar. When the lower ends of the two swing tubes move away from each other, the swing tubes drive the gear ring to rotate forward via the first ratchet. The second ratchet meshes with the gear ring, thereby limiting the reverse rotation of the gear ring.

[0013] Furthermore, a limit plate is fixedly installed at the lower end of each swing tube. The drive assembly also includes a drive unit, which includes a fixed rod, a sliding rod, a third spring, and two hinged rods. The fixed rod is fixedly installed on the lower crossbar and is vertically positioned. The sliding rod is positioned along the second direction, and a connecting ring is fixedly installed at one end of the sliding rod, which is slidably mounted on the fixed rod. One end of each of the two hinged rods is rotatably connected to the connecting ring, and the other end of each hinged rod is fixedly installed with a connecting ball, each connecting ball being hinged to a limit plate ball. The third spring connects the fixed rod and the connecting ring.

[0014] Furthermore, the adjustment mechanism also includes an unlocking component, which includes an unlocking rod. The unlocking rod includes a first connecting rod and a second connecting rod. The first connecting rod is vertically arranged, and its lower end is slidably disposed on the lower crossbar. The second connecting rod is arranged along a second direction, and its upper end is fixedly connected to the first connecting rod. The second connecting rod abuts against a second ratchet, and the second connecting rod is positioned between the second ratchet and the gear ring.

[0015] Furthermore, each swing tube is equipped with a fixed rubber pad and multiple sliding rubber pads. The multiple sliding rubber pads are distributed sequentially along the axial direction of the swing tube and are slidably disposed within the swing tube. The fixed rubber pad is fixedly disposed within the swing tube and is located at the lower end of the sliding rubber pads. The steel wire rope passes sequentially through the fixed rubber pad and the multiple sliding rubber pads.

[0016] Furthermore, each adjustment assembly also includes a tension wheel, a base, and a fourth spring. The base is slidably mounted on the lower crossbar, and the fourth spring connects the base and the lower crossbar. The tension wheel is rotatably mounted on the base, with its axis aligned along a second direction, and a steel wire rope is wound around the tension wheel.

[0017] Furthermore, a second baffle is fixedly provided on both sides of the outer casing along the first direction, and the second baffle is vertically arranged. Along the second direction, the second baffle is eccentrically arranged relative to the outer casing, and the second baffle is biased towards the first side of the outer casing.

[0018] Furthermore, multiple electricity meters are fixedly installed inside the casing.

[0019] Furthermore, each swing tube has a fixing hole at its lower end, and the lower crossbar has mating holes at both ends. When the adjustment assembly is in the second state, each fixing hole corresponds to one mating hole, and the swing tube and the lower crossbar are connected by a second screw.

[0020] The beneficial effects of this invention are as follows: In this adjustable-height meter box, through the provided connecting and adjusting mechanisms, during installation, the upper and lower crossbars are first fixed to the wall, with the upper crossbar positioned above the lower crossbar and the lower crossbar close to the ground. Then, both ends of the steel wire rope are connected to the upper and lower sides of the outer casing, respectively.

[0021] The drive assembly rotates the pulleys in the forward direction, which in turn moves the outer casing upward via a steel cable. Once the casing reaches the designated height, the pulleys stop rotating. When the casing needs to be removed or moved downward, the pulleys rotate in the reverse direction, moving the casing downward via the steel cable. The height of the casing is adjustable and simple to adjust without requiring complete disassembly and reinstallation, making it more efficient and convenient to use.

[0022] In the use of an adjustable-height meter box, because the number of vents is greater than the number of heat dissipation holes, the heat generated by the meter enters the swing tube from the heat dissipation holes on the outer shell and the vents on the swing tube corresponding to the heat dissipation holes, and then exits the swing tube from the vents on the swing tube that do not correspond to the heat dissipation holes. Its heat dissipation channel is tortuous, forming a static pressure zone inside the swing tube, which reduces the probability of dust entering the outer shell under windy conditions. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 A schematic diagram of an adjustable-height meter box provided for an embodiment of the present invention;

[0025] Figure 2 A side view of an adjustable-height meter box provided in an embodiment of the present invention;

[0026] Figure 3 for Figure 2 Sectional view along the middle AA direction;

[0027] Figure 4 for Figure 3 Enlarged view of point B in the middle;

[0028] Figure 5 for Figure 3 Enlarged view of point C in the middle;

[0029] Figure 6 A schematic diagram of the structure of an adjustable meter box in its first state, provided by an embodiment of the present invention;

[0030] Figure 7 A schematic diagram of the structure of an adjustable meter box in a second state, provided in an embodiment of the present invention;

[0031] Figure 8 for Figure 7 Sectional view along the DD direction;

[0032] Figure 9 for Figure 8 Enlarged view at point E in the middle;

[0033] Figure 10 This is a schematic diagram of the structure of an adjustable-height meter box casing provided in an embodiment of the present invention.

[0034] In the diagram: 100, upper crossbar; 102, limiting block; 110, connecting block; 111, arc groove; 112, first screw; 113, first baffle; 120, swing tube; 121, vent hole; 122, fixing hole; 123, limiting plate; 1231, connecting ball; 124, first ratchet; 125, first spring; 126, fixing rubber pad; 127, sliding rubber pad; 130, lower crossbar. ; 131. Mating hole; 140. Sliding wheel; 141. Second ratchet; 142. Second spring; 143. Gear ring; 150. Tensioning wheel; 151. Base; 152. Fourth spring; 160. Sliding rod; 161. Fixing rod; 162. Third spring; 163. Hinge rod; 170. Unlocking rod; 200. Outer shell; 201. Heat dissipation hole; 202. Second baffle; 300. Steel wire rope. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Reference Figures 1 to 10As shown in the figure, an adjustable-height meter box provided by an embodiment of the present invention includes a housing 200, a connecting mechanism, and an adjusting mechanism. The connecting mechanism includes an upper crossbar 100 and a lower crossbar 130, both of which are arranged along a first direction, which is a horizontal direction, and are both fixedly installed on the wall. The upper crossbar 100 is located above the lower crossbar 130.

[0037] The adjustment mechanism includes a drive assembly and two adjustment assemblies, which are sequentially distributed along a first direction. Each adjustment assembly includes a swing tube 120, a wire rope 300, and a pulley 140. The upper end of each swing tube 120 is mounted on the upper crossbar 100, and the swing tube 120 is capable of swinging. The lower ends of the two swing tubes 120 can move closer to or further away from each other. Each swing tube 120 has multiple vent holes 121, which are sequentially distributed along the axial direction of the swing tube 120. Along the first direction, multiple heat dissipation holes 201 are respectively provided on both sides of the outer casing 200, which are sequentially distributed along the vertical direction. The vent holes 121 and the heat dissipation holes 201 are connected, and the number of vent holes 121 is greater than the number of heat dissipation holes 201.

[0038] A pulley 140 is rotatably mounted on the upper crossbar 100. One end of a wire rope 300 is connected to the upper side of the housing 200, and the other end of the wire rope 300 is wound around the pulley 140, passes through a swing tube 120, and connects to the lower side of the housing 200. A drive assembly drives the pulley 140 to rotate. When the pulley 140 rotates forward, it moves the housing 200 upward via the wire rope 300; when the pulley 140 rotates in the reverse direction, it allows the wire rope 300 to move the housing 200 downward. Figure 4 As shown, the forward rotation of the pulley 140 is counterclockwise rotation, and the reverse rotation of the pulley 140 is counterclockwise rotation.

[0039] First, fix the upper horizontal bar 100 and the lower horizontal bar 130 to the wall, with the upper horizontal bar 100 above the lower horizontal bar 130 and the lower horizontal bar 130 close to the ground. Next, fix one end of the steel wire rope 300 to the upper end of the outer casing 200. The other end of the steel wire rope 300 passes over the sliding wheel 140, enters the swing tube 120, and finally passes out from the lower part of the swing tube 120 and is fixedly connected to the lower side of the outer casing 200.

[0040] The drive assembly rotates the pulley 140 clockwise, which in turn moves the outer casing 200 upward via the wire rope 300. Once the outer casing 200 reaches the specified height, the pulley 140 stops rotating. When the outer casing 200 needs to be removed or moved downward, the pulley 140 rotates in the opposite direction, thus moving the outer casing 200 downward via the wire rope 300. The height of the outer casing 200 is adjustable and simple to adjust without requiring complete removal and reinstallation, making it more efficient and convenient to use.

[0041] In the use of an adjustable-height meter box, since the number of vents 121 is greater than the number of heat dissipation holes 201, the heat generated by the meter enters the swing tube 120 from the heat dissipation holes 201 of the outer casing 200 and the vents 121 on the swing tube 120 corresponding to the heat dissipation holes 201, and then exits the swing tube 120 from the vents 121 corresponding to the heat dissipation holes 201. Its heat dissipation channel is tortuous, forming a static pressure zone inside the swing tube 120, which reduces the probability of dust entering the inner casing 200 under windy conditions.

[0042] In this embodiment, each adjustment component further includes a connecting block 110, on which a connecting post is fixedly mounted. An arc-shaped groove 111 is formed on the connecting post, coaxially arranged with the connecting post, and the central angle of the arc-shaped groove 111 is 90°. Connecting grooves are formed at both ends of the upper crossbar 100, and a limiting block 102 is fixedly mounted in each connecting groove. Each connecting post is rotatably mounted in a connecting groove to adjust the relative position of the connecting block 110 and the upper crossbar 100. After adjustment, the connecting block 110 and the upper crossbar 100 are locked by a first screw 112. Each limiting block 102 is slidably mounted in an arc-shaped groove 111. The upper end of the swing tube 120 is rotatably connected to the connecting block 110.

[0043] Two swing tubes 120 are disposed on both sides of the outer casing 200 along a first direction. Two first baffles 113 are fixedly disposed on the connecting block 110, and the two first baffles 113 are respectively disposed on both sides of the connecting block 110. The adjustment assembly has a first state and a second state. In the first state, the two first baffles 113 are distributed sequentially along a second direction, which is horizontal and perpendicular to the first direction. Along the second direction, the two sides of the outer casing 200 are respectively the first side and the second side, with the second side of the outer casing 200 closer to the wall. A vent 121 is located on one side of the swing tube 120 along the second direction and is close to the first side of the outer casing 200. The swing tubes 120 can swing along the first direction, and the lower ends of the two swing tubes 120 can move away from or closer to each other. In the second state, the two first baffles 113 are distributed sequentially along the first direction, and the vent 121 is located on one side of the swing tube 120 along the first direction and is close to the outer casing 200. The oscillating tube 120 no longer oscillates in the first direction.

[0044] Initially, the adjusting component is in the first state, and the swing tube 120 can swing along the second direction. When the housing 200 is raised to the specified height, the connecting block 110 is rotated. Under the restriction of the limiting block 102 and the arc groove 111, the connecting block 110 can only rotate 90°. At this time, the adjusting component is in the second state, and the two first baffles 113 restrict the swing tube 120 from swinging along the second direction. At the same time, the vent 121 and the heat dissipation hole 201 are aligned for better heat dissipation.

[0045] In this embodiment, the drive assembly includes two transmission units. The two transmission units are respectively disposed at both ends of the upper crossbar 100. Each transmission unit includes a first ratchet 124, a first spring 125, a second ratchet 141, and a second spring 142. Each first ratchet 124 is rotatably mounted on a swing tube 120, and the first spring 125 connects the first ratchet 124 and the swing tube 120. The axis of the sliding wheel 140 is arranged along a second direction, and a gear ring 143 is fixedly mounted on the sliding wheel 140. The gear ring 143 and the sliding wheel 140 are coaxially arranged, and the first ratchet 124 meshes with the gear ring 143. The second ratchet 141 is rotatably mounted on the upper crossbar 100, and the second ratchet 141 is located above the gear ring 143, meshing with the gear ring 143. The second spring 142 connects the second ratchet 141 and the upper crossbar 100.

[0046] When the lower ends of the two swing tubes 120 move away from each other, the swing tubes 120 drive the gear ring 143 to rotate forward via the first ratchet 124. The gear ring 143 drives the sliding wheel 140 to rotate forward synchronously, and the wire rope 300 drives the outer casing 200 to move upward. The second ratchet 141 meshes with the gear ring 143, thereby restricting the reverse rotation of the gear ring 143.

[0047] In this embodiment, a limiting plate 123 is fixedly installed at the lower end of each swing tube 120. The drive assembly also includes a drive unit, which includes a fixed rod 161, a sliding rod 160, a third spring 162, and two hinge rods 163. The fixed rod 161 is fixedly installed on the lower crossbar 130 and is vertically arranged. The sliding rod 160 is arranged along the second direction, and a connecting ring is fixedly installed at one end of the sliding rod 160, which is slidably installed on the fixed rod 161. One end of each of the two hinge rods 163 is rotatably connected to the connecting ring, and a connecting ball 1231 is fixedly installed at the other end of each hinge rod 163. Each connecting ball 1231 is hinged to a limiting plate 123. The third spring 162 connects the fixed rod 161 and the connecting ring.

[0048] Stepping down on the sliding rod 160 causes the two hinged rods 163 to move away from each other via the connecting ring, which in turn causes the lower ends of the two swing tubes 120 to move away from each other.

[0049] In this embodiment, the adjustment mechanism further includes an unlocking component, which includes an unlocking rod 170. The unlocking rod 170 includes a first connecting rod and a second connecting rod. The first connecting rod is vertically arranged, and its lower end is slidably disposed on the lower crossbar 130. The second connecting rod is arranged along a second direction, and its upper end is fixedly connected to the first connecting rod. The second connecting rod abuts against the second ratchet 141, and the second connecting rod is located between the second ratchet 141 and the gear ring 143. The second connecting rod moves upward to push the second ratchet 141 to rotate away from the gear ring 143, thereby disengaging the second ratchet 141 and the gear ring 143.

[0050] In this embodiment, each swing tube 120 is provided with a fixed rubber pad 126 and a plurality of sliding rubber pads 127. The plurality of sliding rubber pads 127 are distributed sequentially along the axial direction of the swing tube 120, and the sliding rubber pads 127 are slidably disposed within the swing tube 120. The fixed rubber pad 126 is fixedly disposed within the swing tube 120, and the fixed rubber pad 126 is located at the lower end of the sliding rubber pads 127. The steel wire rope 300 passes sequentially through the fixed rubber pad 126 and the plurality of sliding rubber pads 127.

[0051] As the outer casing 200 moves downward, the steel wire rope 300 inside the swing tube 120 moves upward. The steel wire rope 300 drives the sliding rubber pad 127 upward, and the sliding rubber pad 127 discharges the gas inside the swing tube 120 outward through the vent 121. The airflow at the vent 121 cleans the surface of the outer casing 200. At the same time, the adjustment component is in the first state. Since the vent 121 and the heat dissipation hole 201 are not directly aligned, the airflow at the vent 121 will not blow dust from the surface of the outer casing 200 into the outer casing 200.

[0052] In this embodiment, each adjustment component further includes a tensioning wheel 150, a base 151, and a fourth spring 152. The base 151 is slidably mounted on the lower crossbar 130, and the fourth spring 152 connects the base 151 and the lower crossbar 130. The tensioning wheel 150 is rotatably mounted on the base 151, and the axial direction of the tensioning wheel 150 is arranged along the second direction. The wire rope 300 is wound around the tensioning wheel 150.

[0053] In this embodiment, a second baffle 202 is fixedly disposed on both sides of the outer casing 200 along the first direction, and the second baffle 202 is vertically disposed. Along the second direction, the second baffle 202 is eccentrically disposed relative to the outer casing 200, and the second baffle 202 is biased towards the first side of the outer casing 200. Under the action of the second baffle 202, dust will not be scattered.

[0054] In this embodiment, multiple electricity meters are fixedly installed inside the outer casing 200.

[0055] In this embodiment, each swing tube 120 has a fixing hole 122 at its lower end, and the lower crossbar 130 has mating holes 131 at both ends. When the adjustment assembly is in the second state, each fixing hole 122 corresponds to one mating hole 131, and the swing tube 120 and the lower crossbar 130 are connected by a second screw. Each swing tube 120 has a first mounting hole at its upper end and a second mounting hole at its lower end. The wire rope 300 enters the swing tube 120 through the first mounting hole and exits through the second mounting hole to the outside of the swing tube 120.

[0056] Working process: First, fix the upper crossbar 100 and lower crossbar 130 to the wall, with the upper crossbar 100 above the lower crossbar 130 and the lower crossbar 130 close to the ground. In the initial state, the adjusting component is in the first state, with the two first baffles 113 respectively located on both sides of the connecting block 110 along the second direction. At this time, the swing tube 120 can swing along the first direction. The first ratchet 124 and the second ratchet 141 both mesh with the gear ring 143.

[0057] Next, one end of the wire rope 300 is fixedly connected to the upper end of the outer casing 200. The other end of the wire rope 300 passes over the sliding wheel 140, enters the swing tube 120 through the first mounting hole, passes through the fixed rubber pad 126 and multiple sliding rubber pads 127, and then comes to the outside of the swing tube 120 through the second mounting hole. After passing over the tension wheel 150, it is fixedly connected to the lower side of the outer casing 200. Then, the sliding rod 160 is stepped down, and the sliding rod 160 drives the two hinge rods 163 away from each other through the connecting ring, thereby causing the lower ends of the two swing tubes 120 to move away from each other.

[0058] like Figure 4As shown, when the lower ends of the two swing tubes 120 move away from each other, the swing tubes 120 drive the gear ring 143 to rotate in the forward direction through the first ratchet 124, that is, the gear ring 143 rotates counterclockwise. The gear ring 143 drives the sliding wheel 140 to rotate synchronously. When the sliding wheel 140 rotates counterclockwise, it drives the outer shell 200 to move upward through the wire rope 300.

[0059] Next, the sliding rod 160 is released. Under the action of the third spring 162, the sliding rod 160 moves upward to reset, and through the hinge rod 163, it drives the lower ends of the two swing tubes 120 to move closer to each other to reset. After one tooth of the first ratchet 124 and the gear ring 143 disengages, it makes contact with the next tooth. Under the action of the second ratchet 141, the gear ring 143 is locked, and the gear ring 143 can only rotate counterclockwise, thus preventing the sliding wheel 140 from rotating clockwise under the action of the wire rope 300, which would cause the outer shell 200 to move downward. Each time the sliding rod 160 descends, the gear ring 143 and the sliding wheel 140 rotate once, thereby driving the outer shell 200 to move upward a certain distance through the wire rope 300. The outer shell 200 stops after being raised to the specified height.

[0060] Then, the connecting block 110 is rotated 90°. At this time, the adjusting component is in the second state, and the vent 121 is located on one side of the swing tube 120 along the first direction, and the vent 121 is close to the outer casing 200. Since the number of vents 121 is greater than the number of heat dissipation holes 201, the heat generated by the meter enters the swing tube 120 from the heat dissipation holes 201 of the outer casing 200 and the vents 121 on the swing tube 120 corresponding to the heat dissipation holes 201, and then exits the swing tube 120 from the vents 121 corresponding to the heat dissipation holes 201. Its heat dissipation channel is tortuous, forming a static pressure zone inside the swing tube 120, which reduces the probability of dust entering the inner casing 200 under windy conditions.

[0061] When the adjustment component is in the second state, each fixing hole 122 corresponds to a mating hole 131, and then the swing tube 120 and the lower crossbar 130 are fixedly connected by the second screw. Furthermore, when in use, the housing 200 is isolated from the wall, resulting in better heat dissipation and preventing heat conduction from the wall to the housing under high-temperature conditions, and is unaffected by the wall surface.

[0062] When it is necessary to remove the housing 200 or move the housing 200 downward, remove the second screws at the fixing hole 122 and the mating hole 131. Then rotate the connecting block 110 again so that the adjusting component is in the first state, the two first baffles 113 are distributed sequentially along the second direction, the vent 121 is located on one side of the swing tube 120 along the second direction, and the vent 121 is close to the first side of the housing 200.

[0063] Next, hold down the sliding lever 160 to disengage the first ratchet 124 from the gear ring 143. Simultaneously, raise the unlocking lever 170, causing the second connecting rod to move upward and push the second ratchet 141 to rotate away from the gear ring 143, thus disengaging the second ratchet 141 from the gear ring 143. At this point, the sliding wheel 140 can rotate freely, and the outer casing 200 moves downward under gravity, with the sliding wheel 140 rotating in the opposite direction. Furthermore, with the support of the fixed rubber pad 126 and multiple sliding rubber pads 127, the outer casing 200 descends slowly, preventing excessive impact on the outer casing 200 and thus avoiding damage to the outer casing 200 and injury to the operator. The height of the outer casing 200 is adjustable arbitrarily and the adjustment is simple and convenient, without requiring complete removal and reinstallation of the outer casing 200, making it more convenient to use.

[0064] Simultaneously, as the outer casing 200 moves downward, the steel wire rope 300 inside the swing tube 120 moves upward. The steel wire rope 300 drives the sliding rubber pad 127 to move upward. The sliding rubber pad 127 discharges the gas inside the swing tube 120 outward through the vent 121. The airflow at the vent 121 cleans the surface of the outer casing 200. Since the vent 121 and the heat dissipation hole 201 are not directly opposite each other, the airflow at the vent 121 will not blow dust from the surface of the outer casing 200 into the outer casing 200. Furthermore, under the action of the second baffle 202, the dust will not scatter.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An adjustable-height meter box, characterized in that: It includes a housing, a connecting mechanism, and an adjusting mechanism; the connecting mechanism includes an upper crossbar and a lower crossbar, both of which are arranged along a first direction, which is horizontal, and are both fixedly installed on the wall, with the upper crossbar located above the lower crossbar; The adjustment mechanism includes a drive assembly and two adjustment assemblies, which are arranged sequentially along a first direction. Each adjustment assembly includes a swing tube, a wire rope, and a pulley. The upper end of each swing tube is mounted on an upper crossbar, and the swing tube is capable of swinging. Each swing tube has multiple vent holes, which are arranged sequentially along the axial direction of the swing tube. Along the first direction, multiple heat dissipation holes are provided on both sides of the outer casing, which are arranged sequentially along the vertical direction. The vent holes and heat dissipation holes are connected, and the number of vent holes is greater than the number of heat dissipation holes. The pulley is rotatably mounted on the upper crossbar; one end of the steel wire rope is connected to the upper side of the housing, and the other end of the steel wire rope is wound around the pulley, passes through a swing tube and is connected to the lower side of the housing; the drive assembly drives the pulley to rotate, and when the pulley rotates in the forward direction, it drives the housing to move upward through the steel wire rope, and when the pulley rotates in the reverse direction, it allows the housing to move downward through the steel wire rope. Each adjustment component also includes a connecting block, on which a connecting post is fixedly mounted. The connecting post has an arc-shaped groove, and the arc-shaped groove and the connecting post are coaxially arranged. Connecting grooves are respectively opened at both ends of the upper crossbar, and a limiting block is fixedly mounted in each connecting groove. Each connecting post is rotatably mounted in a connecting groove to adjust the relative position of the connecting block and the upper crossbar. After adjustment, the connecting block and the upper crossbar are locked by a first screw. Each limiting block is slidably mounted in an arc-shaped groove. The upper end of the swing tube is rotatably connected to the connecting block. Two swing tubes are arranged on both sides of the outer casing along a first direction; two first baffles are fixedly arranged on the connecting block, and the two first baffles are respectively arranged on both sides of the connecting block; the adjustment component has a first state and a second state. In the first state of the adjustment component, the two first baffles are distributed sequentially along the second direction, which is horizontal and perpendicular to the first direction; along the second direction, the two sides of the outer casing are the first side and the second side, respectively, and the second side of the outer casing is close to the wall; the vent is located on one side of the swing tube along the second direction and is close to the first side of the outer casing; the swing tube can swing along the first direction, and the lower ends of the two swing tubes can move away from or close to each other; in the second state of the adjustment component, the two first baffles are distributed sequentially along the first direction, the vent is located on one side of the swing tube along the first direction and is close to the outer casing; the swing tube no longer swings along the first direction.

2. The adjustable height meter box according to claim 1, characterized in that: The drive assembly includes two transmission units, which are respectively located at both ends of the upper crossbar. Each transmission unit includes a first ratchet, a first spring, a second ratchet, and a second spring. Each first ratchet is rotatably mounted on a swing tube, and the first spring connects the first ratchet and the swing tube. The axis of the sliding wheel is set along a second direction, and a gear ring is fixedly mounted on the sliding wheel. The gear ring and the sliding wheel are coaxially arranged, and the first ratchet meshes with the gear ring. The second ratchet is rotatably mounted on the upper crossbar, located above the gear ring, and meshes with the gear ring. The second spring connects the second ratchet and the upper crossbar. When the lower ends of the two swing tubes move away from each other, the swing tubes drive the gear ring to rotate in the forward direction through the first ratchet. The second ratchet meshes with the gear ring, thereby limiting the reverse rotation of the gear ring.

3. The adjustable height meter box according to claim 2, characterized in that: Each swing tube has a fixed limit plate at its lower end; the drive assembly also includes a drive unit, which includes a fixed rod, a sliding rod, a third spring, and two hinge rods; the fixed rod is fixedly mounted on the lower crossbar and is vertically mounted; the sliding rod is mounted along the second direction, and a connecting ring is fixedly mounted on one end of the sliding rod, which is slidably mounted on the fixed rod; one end of each of the two hinge rods is rotatably connected to the connecting ring, and the other end of each hinge rod is fixedly mounted with a connecting ball, and each connecting ball is hinged to a limit plate ball; the third spring connects the fixed rod and the connecting ring.

4. The adjustable height meter box according to claim 2, characterized in that: The adjustment mechanism also includes an unlocking component, which includes an unlocking rod. The unlocking rod includes a first connecting rod and a second connecting rod. The first connecting rod is vertically arranged, and its lower end is slidably arranged on the lower crossbar. The second connecting rod is arranged along a second direction, and its upper end is fixedly connected to the first connecting rod. The second connecting rod abuts against the second ratchet, and the second connecting rod is located between the second ratchet and the gear ring.

5. The height-adjustable meter box according to claim 1, characterized in that: Each swing tube is equipped with a fixed rubber pad and multiple sliding rubber pads; the multiple sliding rubber pads are distributed sequentially along the axial direction of the swing tube and are slidably disposed inside the swing tube; the fixed rubber pad is fixedly disposed inside the swing tube and is located at the lower end of the sliding rubber pad; the steel wire rope passes through the fixed rubber pad and multiple sliding rubber pads in sequence.

6. The height-adjustable meter box according to claim 1, characterized in that: Each adjustment assembly also includes a tension wheel, a base, and a fourth spring; the base is slidably mounted on the lower crossbar, and the fourth spring connects the base and the lower crossbar; the tension wheel is rotatably mounted on the base, with its axis aligned along a second direction, and a wire rope is wound around the tension wheel.

7. The height-adjustable meter box according to claim 1, characterized in that: A second baffle is fixedly provided on both sides of the outer casing along the first direction, and the second baffle is vertically arranged; along the second direction, the second baffle is eccentrically arranged relative to the outer casing, and the second baffle is biased towards the first side of the outer casing.

8. The height-adjustable meter box according to claim 1, characterized in that: Multiple electricity meters are fixedly installed inside the casing.

9. The height-adjustable meter box according to claim 1, characterized in that: Each swing tube has a fixing hole at its lower end, and the lower crossbar has mating holes at both ends. When the adjustment assembly is in the second state, each fixing hole corresponds to a mating hole, and the swing tube and the lower crossbar are connected by a second screw.

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