A protective metering box with staggered joint bite anti-prying structure

Abstract

The present application relates to the technical field of metering box, and proposes a protective metering box with misaligned occlusion pry-resistant structure, which comprises a metering box body, a fixed frame, a movable frame, a positioning frame, a door frame, a primary locking assembly, a position adjusting assembly and a secondary locking assembly, the fixed frame is fixedly arranged in the metering box body, the movable frame is slidably arranged on the metering box body, the positioning frame is fixedly arranged on the fixed frame, the positioning frame is internally fixedly provided with a partition plate, the partition plate divides the interior of the positioning frame into a positioning area and a transmission area, the door frame is rotatably arranged on the movable frame by means of a hinge, the primary locking assembly is arranged in the positioning area, the position adjusting assembly is arranged in the transmission area, and the secondary locking assembly is arranged in the positioning area, through the above technical scheme, the technical problem that the door body and the box body in the prior art are difficult to ensure close contact, thereby being prone to deformation of the four corners of the door body under external force when being pried and the pry-resistant capacity being relatively insufficient is solved.

Description

Technical Field

[0001] This invention relates to the field of metering box technology, specifically to a protective metering box with a staggered interlocking anti-pry structure. Background Technology

[0002] A metering box is an electrical device typically used to measure and record electrical parameters such as current, voltage, and power. It is commonly used in power systems, industrial automation control systems, building automation systems, and other fields. It is one of the important devices for realizing electrical measurement and is widely used in power systems, industrial automation control systems, building automation systems, and other fields.

[0003] The structure of a metering box generally consists of a box body, an internal circuit board, a power supply module, and an interface module. The box body is usually made of materials such as aluminum alloy and steel plate. The internal circuit board is responsible for collecting, processing, and storing electrical parameter data. The power supply module provides the power required by the metering box, and the interface module is responsible for data communication and control between the metering box and other systems.

[0004] Metering boxes are typically installed outdoors or in public areas. To ensure safe operation and prevent unauthorized access, the doors of these boxes are usually equipped with locks. For example, a key drives the lock cylinder to rotate, causing the bolt to extend into the keyhole on the door frame, thus locking the door to the box and preventing electricity theft and unauthorized entry. However, in current technology, the bolt of this type of lock is usually only located on one edge of the door. When locked, there are fewer points of force between the door and the box, especially for large metering boxes with multiple meters installed inside. The door area of ​​such boxes is large, and the lever arms of the four corners of the door relative to the locking position are long. Traditional single-point locking methods cannot guarantee a tight fit between the door and the box after the door is closed. Gaps may exist between the door and the box, making it easy for unauthorized personnel to insert tools such as pry bars from the edge of the door and apply external force, causing door deformation or lock damage, thus affecting the protective reliability of the metering box. Summary of the Invention

[0005] This invention proposes a protective metering box with a staggered interlocking anti-pry structure to solve the technical problem in the prior art where it is difficult to ensure a tight fit between the metering box door and the box body, which makes the four corners of the door susceptible to deformation under external force when pried, resulting in relatively insufficient anti-pry capability.

[0006] The technical solution of the present invention is as follows:

[0007] A protective metering box with a staggered interlocking anti-pry structure includes a metering box body and further includes:

[0008] A fixed frame and a movable frame are provided, wherein the fixed frame is fixedly installed inside the metering box body, and the movable frame is slidably installed on the metering box body;

[0009] A positioning frame is fixedly mounted on a fixed frame. A partition is fixedly mounted inside the positioning frame, which divides the interior of the positioning frame into a positioning area and a transmission area.

[0010] A door frame, wherein the door frame is rotatably mounted on the movable frame via hinges, and a door panel is fixedly mounted on the door frame;

[0011] A primary locking component is disposed within the positioning area and is used to fix the relative position between the door frame and the positioning frame when the movable frame is in the locked position.

[0012] A positioning component is disposed in the transmission area and is used to drive the first-level locking component to operate;

[0013] A secondary locking component is disposed within the positioning area to further fix the relative position between the door frame and the positioning frame.

[0014] When the movable frame moves to the locked position, the door frame is located outside the positioning frame, and the movable frame abuts against the fixed frame. When the movable frame moves to the open position, the movable frame disengages from the fixed frame, and the door frame can open and close normally.

[0015] To fix the relative position between the door frame and the positioning frame when the active frame is in the locked position, the primary locking component includes:

[0016] The positioning frame has four locking frames symmetrically fixed inside, and the output ends of the four locking frames correspond to the four corners inside the door frame, respectively.

[0017] The first helical gear is rotatably provided at the end of each locking frame away from the door frame;

[0018] A drive shaft is provided on the partition plate, and a plurality of drive shafts are rotatably arranged thereon. Each drive shaft is coaxially fixed with a second helical gear, and the plurality of first helical gears mesh with the plurality of second helical gears respectively.

[0019] A locking mechanism is provided inside each of the locking frames to lock the relative position between the door frame and the positioning frame;

[0020] A shifting mechanism is provided inside each of the locking frames to adjust the position of the locking mechanism.

[0021] Furthermore, the locking mechanism includes:

[0022] A pusher frame is slidably disposed inside each of the locking frames;

[0023] The inner frame and the outer frame are provided. Each push frame is fixedly provided with the inner frame, and the outer frame is slidably sleeved on each inner frame. A positioning spring is fixedly provided between the inner frame and the outer frame, and a primary locking block is fixedly provided on each outer frame.

[0024] The door frame has a first-level locking groove at a position corresponding to the first-level locking block, and the first-level locking groove is adapted to the first-level locking block.

[0025] Furthermore, the shifting mechanism includes an adjusting screw, and each of the locking frames is rotatably provided with the adjusting screw. Each adjusting screw is threaded with an adjusting nut, and the adjusting nut is fixedly connected to the push frame.

[0026] In order to simultaneously drive each drive shaft to rotate in the same direction, the adjustment assembly includes:

[0027] A drive motor is fixedly mounted on the positioning frame, and the output end of the drive motor is coaxially and fixedly connected to one of the transmission shafts.

[0028] A sprocket is coaxially fixedly mounted on each of the drive shafts, and the sprocket is located in the transmission area;

[0029] The chain is tensioned and meshed between the four sprockets.

[0030] In order to further fix the relative position between the door frame and the positioning frame after fixing the relative position between the door frame and the positioning frame, the secondary locking component includes a driving component. Several driving components are spaced apart between every two adjacent pushing frames. Each driving component is fixedly installed inside the positioning area, and a secondary locking block is fixedly installed at the output end of each driving component.

[0031] The door frame has a secondary locking groove at a position corresponding to the secondary locking block, and the secondary locking groove is adapted to the secondary locking block.

[0032] The working principle and beneficial effects of this invention are as follows:

[0033] 1. In this invention, the drive motor synchronously drives four transmission shafts to rotate in the same direction through sprockets and chains. The transmission shafts drive the adjusting screw to rotate through the meshing of the second helical gear and the first helical gear. The adjusting nut drives the push frame to move towards the door frame, so that the four primary locking blocks are synchronously inserted into the corresponding primary locking slots. The four locking points act simultaneously, and the four corners of the door frame are subjected to force at the same time. Compared with the prior art, the fit between each part of the door and the box is better, and it is not easy to deform when subjected to local force, thus improving the anti-pry capability of the door frame.

[0034] 2. In this invention, after the primary locking component completes locking, the driving component pushes the secondary locking block into the secondary locking slot, making the force distribution between the door frame and the positioning frame more uniform. Even if the drive motor or the transmission between the sprocket and the chain fails, the secondary locking component can still complete locking independently, enhancing the overall locking effect. Attached Figure Description

[0035] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0036] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0037] Figure 2 This is a schematic diagram of the overall structure from another angle in this invention;

[0038] Figure 3 This is a schematic cross-sectional view of the overall structure of the movable frame when it is moved to the locked position in this invention.

[0039] Figure 4 For the present invention Figure 3 A magnified schematic diagram of the partial structure at point A in the middle;

[0040] Figure 5 This is a schematic cross-sectional view of the overall structure of the movable frame when it is moved to the open position in this invention.

[0041] Figure 6 For the present invention Figure 5 A magnified schematic diagram of the local structure at point B;

[0042] Figure 7 This is a cross-sectional view of the overall structure of the door frame in the open state in this invention.

[0043] Figure 8 This is a cross-sectional structural diagram showing the cooperation of the fixed frame, positioning frame, partition, and adjustment component in this invention.

[0044] Figure 9 This is a cross-sectional view of the fixed frame, positioning frame, partition, and adjustment assembly from another angle in the present invention.

[0045] Figure 10 For the present invention Figure 9 A magnified schematic diagram of the structure at point C in the middle;

[0046] Figure 11 This is a cross-sectional view of the cooperation between the partition and the primary locking assembly in this invention.

[0047] Figure 12 This is a cross-sectional view of the partition and primary locking assembly from another angle in this invention.

[0048] Figure 13 This is a schematic diagram of the door frame, door panel, primary locking groove, and secondary locking groove in this invention.

[0049] In the diagram: 1. Metering box body; 2. Fixed frame; 3. Movable frame; 4. Positioning frame; 5. Partition; 6. Door frame; 7. Hinge; 8. Door panel;

[0050] 101. Locking frame; 102. First helical gear; 103. Drive shaft; 104. Second helical gear; 105. Push frame; 106. Inner sleeve frame; 107. Outer sleeve frame; 108. Positioning spring; 109. Primary locking block; 110. Primary locking groove; 111. Adjusting screw; 112. Adjusting nut;

[0051] 201. Drive motor; 202. Sprocket; 203. Chain;

[0052] 301. Driving component; 302. Secondary locking block; 303. Secondary locking slot. Detailed Implementation

[0053] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. 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 of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0054] like Figures 1 to 13As shown, this embodiment proposes a protective metering box with a staggered interlocking anti-pry structure, including a metering box body, a fixed frame 2, a movable frame 3, a positioning frame 4, a door frame 6, a primary locking component, an adjustment component, and a secondary locking component. The fixed frame 2 is fixedly installed inside the metering box body 1, and the movable frame 3 is slidably installed on the metering box body 1. The positioning frame 4 is fixedly installed on the fixed frame 2, and a partition 5 is fixedly installed inside the positioning frame 4, dividing the interior of the positioning frame 4 into a positioning area and a transmission area. The door frame 6 is rotatably installed on the movable frame 3 via a hinge 7, and a door panel 8 is fixedly installed on the door frame 6. When the movable frame 3 moves to the locked position, the door frame 6 is located outside the positioning frame 4, and the movable frame 3 abuts against the fixed frame 2. When the movable frame 3 moves to the open position, the movable frame 3 disengages from the fixed frame 2, and the door frame 6 can open and close normally. The primary locking component is located inside the positioning area and is used to fix the relative position between the door frame 6 and the positioning frame 4 when the movable frame 3 is in the locked position. Figures 8 to 12 As shown, the primary locking assembly includes a locking frame 101, a first helical gear 102, a transmission shaft 103, a locking mechanism, and a shifting mechanism. Four locking frames 101 are symmetrically fixed inside the positioning frame 4. The output ends of the four locking frames 101 correspond to the four corners inside the door frame 6, respectively. A first helical gear 102 is rotatably mounted on the end of each locking frame 101 away from the door frame 6. Several transmission shafts 103 are rotatably mounted on the partition 5. A second helical gear 104 is coaxially fixed on each transmission shaft 103. Several first helical gears 102 mesh with several second helical gears 104 respectively. A locking mechanism is provided inside each locking frame 101 for locking the relative position between the door frame 6 and the positioning frame 4. A shifting mechanism is provided inside each locking frame 101 for adjusting the position of the locking mechanism.

[0055] like Figure 6 As shown, when the movable frame 3 is in the open position, the door frame 6 is not locked and can be freely opened for maintenance and other operations on the electrical components inside the metering box 1. When it is necessary to close the door frame 6, first close the door frame 6 and the door panel 8. At this time, the door frame 6 abuts against the movable frame 3. Then push the movable frame 3 to move it until it is moved to the locked position, as shown. Figure 4 As shown, at this time, the door frame 6 is located outside the positioning frame 4, and the movable frame 3 abuts against the fixed frame 2. Then, the relative position between the door frame 6 and the positioning frame 4 can be fixed.

[0056] When locking the relative position between the door frame 6 and the positioning frame 4, the adjustment component is activated to synchronously drive the four transmission shafts 103 to rotate in the same direction. The transmission shafts 103 drive the second helical gear 104 to rotate, and the second helical gear 104 drives the first helical gear 102 to rotate. Thus, the first helical gear 102 drives the shifting mechanism to move, which in turn drives the locking mechanism to move synchronously, thereby fixing the relative position between the door frame 6 and the positioning frame 4. Then, the secondary locking component is activated to further fix the relative position between the door frame 6 and the positioning frame 4.

[0057] When it is necessary to open door frame 6, retract the secondary locking component and reverse the driving adjustment component, thereby retracting the locking mechanism. Then, grasp the movable frame 3 and pull it outward until the movable frame 3 is moved to the open position. Figure 6 As shown, at this time, the movable frame 3 is separated from the fixed frame 2, and the door frame 6 can be opened and closed normally.

[0058] The locking mechanism includes a push frame 105, an inner frame 106, and an outer frame 107, such as Figure 11 , Figure 12 As shown, each locking frame 101 has a sliding push frame 105 inside, each push frame 105 has an inner sleeve frame 106 fixedly mounted on it, each inner sleeve frame 106 has an outer sleeve frame 107 slidably mounted on it, a positioning spring 108 is fixedly mounted between the inner sleeve frame 106 and the outer sleeve frame 107, and each outer sleeve frame 107 has a primary locking block 109 fixedly mounted on it. A primary locking groove 110 is opened inside the door frame 6 at a position corresponding to the primary locking block 109, and the primary locking groove 110 is adapted to the primary locking block 109.

[0059] Under the action of the shifting mechanism, the shifting mechanism drives the pusher 105 to move within the locking frame 101. At the same time, the inner frame 106 and the outer frame 107 move accordingly until the first-level locking block 109 on the outer frame 107 is pushed into the first-level locking groove 110, thus locking the relative position between the door frame 6 and the positioning frame 4.

[0060] During the locking process, the positioning spring 108 between the inner sleeve 106 and the outer sleeve 107 plays an automatic adjustment role. At the same time, if there is a slight positional deviation between the first-level locking block 109 and the first-level locking groove 110, the positioning spring 108 can absorb the deviation by compression deformation, ensuring that all first-level locking blocks 109 can smoothly enter the corresponding first-level locking groove 110. The elastic force provided by the positioning spring can tightly abut the first-level locking block 109 against the inside of the first-level locking groove 110 and keep it in close contact, preventing the lock from loosening due to vibration or impact.

[0061] The shifting mechanism includes an adjusting screw 111, such as Figure 11 , Figure 12As shown, each locking frame 101 has an adjusting screw 111 rotatably installed inside, and each adjusting screw 111 is threaded with an adjusting nut 112, which is fixedly connected to the push frame 105.

[0062] When the four drive shafts 103 rotate synchronously in the same direction, the drive shafts 103 drive the second helical gear 104 to rotate, the second helical gear 104 drives the first helical gear 102 to rotate, and the first helical gear 102 can drive the corresponding adjusting screw 111 to rotate. As the adjusting screw 111 rotates, the adjusting nut 112 moves along the screw axis. Since the adjusting nut 112 is fixedly connected to the push frame 105, when the adjusting nut 112 moves, it drives the push frame 105 to move together, thereby realizing the advancement or retraction of the locking mechanism.

[0063] When the adjusting screw 111 rotates in the forward direction, the adjusting nut 112 moves towards the door frame 6. The pusher 105 then moves towards the door frame 6. When the adjusting screw 111 rotates in the reverse direction, the adjusting nut 112 moves away from the door frame 6, and the pusher 105 then retracts.

[0064] The adjustment component is located in the transmission area and is used to drive the action of the primary locking component, such as... Figures 8 to 12 As shown, the positioning assembly includes a drive motor 201, a sprocket 202, and a chain 203. The drive motor 201 is fixedly mounted on the positioning frame 4. The output end of the drive motor 201 is coaxially fixedly connected to one of the transmission shafts 103. A sprocket 202 is coaxially fixedly mounted on each transmission shaft 103. The sprocket 202 is located in the transmission area. A chain 203 is tensioned and meshed between the four sprockets 202.

[0065] When it is necessary to lock the relative position between the door frame 6 and the positioning frame 4, after the door frame 6 moves to the outside of the positioning frame 4 and the position of the first-level locking groove 110 corresponds to the position of the first-level locking block 109, the drive motor 201 is turned on. The drive motor 201 directly drives the transmission shaft 103, which is fixedly connected to it on the same axis, to rotate. A sprocket 202 is fixedly installed on the transmission shaft 103. The corresponding sprocket 202 rotates together with the transmission shaft 103. At the same time, under the action of the chain 203, other sprockets 202 can be synchronously driven to rotate in the same direction. Each sprocket 202 can drive its corresponding transmission shaft 103 to rotate.

[0066] The secondary locking component is located inside the positioning area to further secure the relative position between the door frame 6 and the positioning frame 4, such as... Figure 4 , Figure 6As shown, the secondary locking assembly includes a drive component 301, which is preferably an electric cylinder. Several drive components 301 are spaced apart between every two adjacent push frames 105. Each drive component 301 is fixedly installed inside the positioning area. A secondary locking block 302 is fixedly installed at the output end of each drive component 301. A secondary locking groove 303 is provided inside the door frame 6 at the position corresponding to the secondary locking block 302. The secondary locking groove 303 is adapted to the secondary locking block 302.

[0067] After the primary locking component completes locking, the secondary locking block 302 aligns with the corresponding secondary locking groove 303 on the door frame 6. At this time, the drive unit 301 is activated to push the secondary locking block 302 towards the door frame 6. As the drive unit 301 continues to extend, the secondary locking block 302 is inserted into the secondary locking groove 303. When the secondary locking block 302 is fully inserted into the secondary locking groove 303, the relative position between the door frame 6 and the positioning frame 4 is further fixed.

[0068] Because several secondary locking slots 303 are arranged at intervals and staggered from the primary locking slots 110, the force points between the door frame 6 and the positioning frame 4 are more evenly distributed, resulting in a better overall locking effect. Even if the drive motor or the transmission between the sprocket 202 and the chain 203 fails, the secondary locking block can still complete the locking, improving the reliability of the entire anti-pry system.

[0069] The working principle or usage procedure of the protective metering box with staggered interlocking anti-pry structure is as follows:

[0070] When the movable frame 3 is in the open position, the door frame 6 is not locked and can be opened freely to perform maintenance and other operations on the electrical components inside the metering box body 1. When it is necessary to close the door frame 6, first close the door frame 6 and the door panel 8. At this time, the door frame 6 abuts against the movable frame 3. Then push the movable frame 3 to move it until the movable frame 3 is moved to the locked position. At this time, the door frame 6 is located outside the positioning frame 4, and the movable frame 3 abuts against the fixed frame 2. Then, the relative position between the door frame 6 and the positioning frame 4 can be fixed.

[0071] When the relative position between the locked door frame 6 and the positioning frame 4 is reached, the drive motor 201 is turned on. The drive motor 201 directly drives the transmission shaft 103, which is fixedly connected to it on the same axis, to rotate. A sprocket 202 is fixedly installed on the transmission shaft 103. The corresponding sprocket 202 rotates together with the transmission shaft 103. At the same time, under the action of the chain 203, other sprockets 202 can be driven to rotate synchronously in the same direction. Each sprocket 202 can drive its corresponding transmission shaft 103 to rotate.

[0072] When the four drive shafts 103 rotate synchronously in the same direction, the drive shafts 103 drive the second helical gear 104 to rotate, and the second helical gear 104 drives the first helical gear 102 to rotate. The first helical gear 102 then drives the corresponding adjusting screw 111 to rotate. As the adjusting screw 111 rotates, the adjusting nut 112 moves along the screw axis, thereby driving the push frame 105 to move together. At this time, the inner sleeve frame 106 and the outer sleeve frame 107 move accordingly until the first-level locking block 109 on the outer sleeve frame 107 is pushed into the first-level locking groove 110. The elastic force provided by the positioning spring can lock the first-level locking block 109 into the first-level locking groove 110. 09 is tightly abutted against the inside of the primary locking groove 110 and kept in close contact to prevent the lock from loosening due to vibration or impact, thus locking the relative position between the door frame 6 and the positioning frame 4. At this time, the secondary locking block 302 is aligned with the corresponding secondary locking groove 303 on the door frame 6. The drive member 301 is activated to push the secondary locking block 302 towards the door frame 6. As the drive member 301 continues to extend, the secondary locking block 302 is inserted into the secondary locking groove 303. When the secondary locking block 302 is fully inserted into the secondary locking groove 303, the relative position between the door frame 6 and the positioning frame 4 is further fixed.

[0073] When it is necessary to open the door frame 6, the drive unit 301 is retracted and the corresponding transmission shaft 103 is rotated in the reverse direction by the drive motor 201, thereby retracting the first-level locking block 109 and the second-level locking block 302. Then, the movable frame 3 is grasped and pulled outward until the movable frame 3 is moved to the open position. At this time, the movable frame 3 is disengaged from the fixed frame 2, and the door frame 6 can be opened and closed normally.

[0074] The above are merely preferred embodiments of the present invention and are 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. A protective metering box with a staggered interlocking anti-pry structure, comprising a metering box body (1), characterized in that, Also includes: Fixed frame (2) and movable frame (3), the fixed frame (2) is fixedly installed inside the metering box body (1), and the movable frame (3) is slidably installed on the metering box body (1). Positioning frame (4), the positioning frame (4) is fixedly installed on the fixed frame (2), and a partition (5) is fixedly installed inside the positioning frame (4), the partition (5) divides the inside of the positioning frame (4) into a positioning area and a transmission area; Door frame (6), the door frame (6) is rotatably mounted on the movable frame (3) via a hinge (7), and a door panel (8) is fixedly mounted on the door frame (6); A primary locking component is disposed inside the positioning area and is used to fix the relative position between the door frame (6) and the positioning frame (4) when the active frame (3) is in the locked position. A positioning component is disposed in the transmission area and is used to drive the first-level locking component to operate; A secondary locking component is disposed inside the positioning area to further fix the relative position between the door frame (6) and the positioning frame (4).

2. The protective metering box with a staggered interlocking anti-pry structure according to claim 1, characterized in that, When the movable frame (3) moves to the locked position, the door frame (6) is located outside the positioning frame (4), and the movable frame (3) abuts against the fixed frame (2). When the movable frame (3) moves to the open position, the movable frame (3) disengages from the fixed frame (2), and the door frame (6) can open and close normally.

3. A protective metering box with a staggered interlocking anti-pry structure according to claim 1, characterized in that, The primary locking component includes: Locking frame (101), four locking frames (101) are symmetrically fixed inside the positioning frame (4), and the output ends of the four locking frames (101) correspond to the four corners inside the door frame (6); The first helical gear (102) is rotatably provided at the end of each locking frame (101) away from the door frame (6); A drive shaft (103) is rotatably mounted on the partition plate (5). Each drive shaft (103) is coaxially fixed with a second helical gear (104). A plurality of first helical gears (102) mesh with a plurality of second helical gears (104). The locking mechanism is provided inside each of the locking frames (101) for locking the relative position between the door frame (6) and the positioning frame (4); The shifting mechanism is provided inside each of the locking frames (101) for adjusting the position of the locking mechanism.

4. A protective metering box with a staggered interlocking anti-pry structure according to claim 3, characterized in that, The locking mechanism includes: Push frame (105), each of the locking frames (101) has the push frame (105) slidably disposed inside. The inner frame (106) and the outer frame (107) are provided. The inner frame (106) is fixedly provided on each of the push frames (105). The outer frame (107) is slidably sleeved on each of the inner frame (106). A positioning spring (108) is fixedly provided between the inner frame (106) and the outer frame (107). A first-level locking block (109) is fixedly provided on each of the outer frames (107).

5. A protective metering box with a staggered interlocking anti-pry structure according to claim 4, characterized in that, A first-level locking groove (110) is provided inside the door frame (6) at a position corresponding to the first-level locking block (109), and the first-level locking groove (110) is adapted to the first-level locking block (109).

6. A protective metering box with a staggered interlocking anti-pry structure according to claim 4, characterized in that, The shifting mechanism includes an adjusting screw (111), and each of the locking frames (101) is rotatably provided with the adjusting screw (111). Each adjusting screw (111) is threaded with an adjusting nut (112), and the adjusting nut (112) is fixedly connected to the push frame (105).

7. A protective metering box with a staggered interlocking anti-pry structure according to claim 6, characterized in that, The adjustment component includes: A drive motor (201) is fixedly mounted on the positioning frame (4), and the output end of the drive motor (201) is coaxially and fixedly connected to one of the transmission shafts (103). A sprocket (202) is coaxially fixedly mounted on each of the drive shafts (103), and the sprocket (202) is located in the transmission area; The chain (203) is tensioned and meshed between the four sprockets (202).

8. A protective metering box with a staggered interlocking anti-pry structure according to claim 7, characterized in that, The secondary locking component includes a drive element (301). Several drive elements (301) are spaced apart between every two adjacent push frames (105). Each drive element (301) is fixedly disposed inside the positioning area. A secondary locking block (302) is fixedly disposed at the output end of each drive element (301).

9. A protective metering box with a staggered interlocking anti-pry structure according to claim 8, characterized in that, The door frame (6) has a secondary locking groove (303) at the position corresponding to the secondary locking block (302), and the secondary locking groove (303) is adapted to the secondary locking block (302).

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