CN219181012U - Metering box structure - Google Patents

Abstract

The utility model relates to a metering box structure, which comprises a box body, wherein the front side of the box body is provided with a front opening and a front door body, and the rear side of the box body is provided with a rear opening and a rear door body; an interlocking component is arranged in the box body and comprises an interlocking control part arranged towards the front opening side and an interlocking linkage part arranged towards the rear opening side, a locking piece is arranged at the inner side of the rear door body, and an interlocking relation is formed between the interlocking linkage part and the locking piece; when the interlocking linkage part is in locking fit with the locking piece, the rear door body is locked with the box body; when the interlocking control part is driven to perform control action, the interlocking linkage part is unlocked with the locking piece along with the action of the interlocking control part, and the rear door body and the box body are unlocked. Based on the setting of the interlocking component applied between the front door body and the rear door body of the metering box structure, the characteristic of sequential relevance of unlocking between the front door body and the rear door body can be effectively realized.

Description

Metering box structure

Technical Field

The utility model relates to the technical field of application of electric power facility equipment, in particular to a metering box structure.

Background

With the vigorous development of economy and science and technology in China and the continuous increase of electricity demand for production and living of the national people, the improvement of the distribution network power supply technology is greatly promoted. The distribution metering box is used as an important power device of a power supply enterprise, and the running condition of the distribution metering box directly determines whether power supply is safe and reliable. The distribution box is used for: and the electric energy is reasonably distributed, so that the opening and closing operation of the circuit is convenient. The circuit has higher safety protection level and can intuitively display the conduction state of the circuit.

In prior art batch tank applications, there is typically a certain volume, internally divided by a plurality of functional spaces for different internal equipment arrangements; in order to maintain the convenience, the opening is usually selected to be arranged at each functional area on the periphery of the box body of the metering box, and a door body is arranged; the maintenance personnel can correspond to the door body of the corresponding functional area in the maintenance process.

However, if the external lock body for unlocking the metering box is arranged on the corresponding door body, the control of the key electricity transmission device can be realized by disassembling the lock body to directly open the door body of the region, and the key electricity transmission device is at risk of being stolen.

Based on the quality standard requirement of the batch meter that the open air set up, under the prerequisite of guaranteeing the door body quality in the batch meter structure, the material selection material of corresponding door body is all comparatively abundant, so door body self will have the great defect of weight. For the door body that adopts vertical hinged door structure to set up, the hinge structure that is connected between its door body and the box and sets up long-time bearing great dead weight's door body, causes hinge structure's damage easily.

Disclosure of Invention

The utility model aims to provide a metering box structure for overcoming the defects in the prior art.

The metering box structure comprises a box body, wherein the front side of the box body is provided with a front opening, a front door body is arranged on the front opening in an attached mode, the rear side of the box body is provided with a rear opening, and a rear door body is arranged on the rear opening in an attached mode; an interlocking component is arranged in the box body and comprises an interlocking control part arranged towards the front opening side and an interlocking linkage part arranged towards the rear opening side, a locking piece is arranged at the inner side of the rear door body, and an interlocking relation is formed between the interlocking linkage part and the locking piece; when the interlocking linkage part is in locking fit with the locking piece, the rear door body is locked with the box body; when the interlocking control part is driven to perform control action, the interlocking linkage part is unlocked with the locking piece along with the action of the interlocking control part, and the rear door body and the box body are unlocked.

Further, a side opening is arranged beside the front opening of the box body, and a side door body is arranged on the side opening in an attached mode; the side door lock is arranged between the front opening and the side opening, a side door lock catch is arranged on the inner side of the side door body, and the side door lock is in locking connection with the side door lock catch.

Further, the side door lock comprises a supporting part arranged between the front opening and the side opening, a latch body is arranged in the supporting part, one end of the latch body is provided with a handle towards the front opening side, the other end of the latch body is provided with a side lock tongue towards the side opening side, and a side lock spring is connected between the latch body and the supporting part; the side lock bolt is matched with the side door lock catch in a locking way.

Further, a front door lock is arranged at the inner side of the front door body, a front lock catch is arranged at the front opening side of the box body, and the front door lock is in locking connection with the front lock catch; the front door lock is provided with an unlocking outer structure which is used for unlocking and controlling the front door lock on the outer side of the front door lock.

Further, the rear door is arranged in a closed manner relative to the arrangement range of the interlocking assembly.

Further, a bearing wheel assembly is arranged at the lower part of the inner side edge of the rear door body, and a bearing part is arranged at the lower part of the rear opening side of the box body; when the back door body is closed and covered at the back opening position, the bearing wheel assembly is supported and supported on the bearing part.

Further, a first positioning bracket is arranged in the box body, the interlocking assembly comprises a first interlocking assembly, the first interlocking assembly comprises a first interlocking rod arranged along the front-back direction of the box body, the first interlocking rod is movably arranged on the first positioning bracket in a penetrating way along the front-back direction, and a first interlocking spring is connected between the first interlocking rod and the first positioning bracket; a pressing plate is arranged at one end, facing the front opening, of the first interlocking rod to serve as the interlocking control part, and a pushing part is arranged at one end, facing the rear door body, of the first interlocking rod to serve as the interlocking part; the locking piece comprises a rear locking piece arranged at the inner side of the rear door body, and a rear lock catch is arranged at one side of the box body corresponding to the rear opening; when the rear locking piece and the rear lock catch form lock catch matching, the rear door body and the box body are in a locking state; when the pressing plate is pressed to enable the pressing part to be pressed to the rear lock piece, the rear lock piece is unlocked on the rear lock catch.

Further, the rear locking piece comprises a locking bracket arranged at the inner side of the rear door body, a first bracket hole is formed in the locking bracket towards one side of the box body, and a second bracket hole is formed in the peripheral side of the locking bracket; the lock bracket is provided with a lock pressing piece in an attaching way, the second bracket hole is provided with a rear lock tongue in an attaching way, a rear lock spring is connected between the lock bracket and the lock pressing piece, and the lock pressing piece is movably associated with the rear lock tongue; when the lock pressing piece is forced to push towards the rear door body, the rear lock tongue is retracted into the lock bracket, the rear lock tongue and the rear lock catch are unlocked, and the rear lock spring has reset potential energy; when the lock pressing piece is subjected to withdrawal force, the rear lock spring releases reset potential energy, and the rear lock tongue extends out of the lock bracket and is locked on the rear lock buckle.

Further, a second positioning bracket is arranged in the box body, the interlocking assembly comprises a second interlocking assembly, the second interlocking assembly comprises a second interlocking rod arranged along the front-back direction of the box body, the second interlocking rod is rotatably connected to the second positioning bracket, and a second interlocking spring is connected between the second interlocking rod and the second positioning bracket; a rotary handle is arranged at one end, facing the front opening, of the second interlocking rod to serve as the interlocking control part, and a lock hook is arranged at one end, facing the rear door body, of the second interlocking rod to serve as the interlocking part; the locking piece comprises a locking bracket arranged at the inner side of the rear door body, when the locking bracket is abutted to the moving range of the locking hook and enables the locking hook to be in a first station position, the locking hook and the locking bracket form locking fit, and the rear door body and the box body are in a locking state; when the rotating handle is rotated to enable the lock hook to be in the second station position, the lock hook is separated from the locking support, and the lock hook is unlocked on the locking support.

Further, the whole cuboid form that is of box, the box top side has the slope top structure that the slope set up, box both sides lateral wall has the couple structure.

The utility model has the beneficial effects that:

based on the setting of the interlocking component applied between the front door body and the rear door body of the metering box structure, the characteristic of sequential relevance of unlocking between the front door body and the rear door body can be effectively realized.

In practice, the basic functional area may be arranged at a proximal position on the front side of the meter box structure, while the important functional area is arranged at a distal position on the rear side of the meter box. When overhauling, the functional area door body at the near end position is opened firstly, and then the functional area door body at the far end position can be opened by pushing the pushing part arranged at the near end of the combined lock structure, so that overhauling application of the functional area at the far end position is met. On the other hand, the door body of the functional area at the far end position is not provided with an external lock body, so that the possibility that a non-staff directly operates at the far end position of the box body can be avoided, and effective guarantee is provided for preventing the key electricity consumption transmission equipment from being stolen.

In the vertical hinged door structure applied to the door body, based on the arrangement of the bearing wheel assembly, the door body can be effectively formed with a balanced and stable bearing relationship under the condition of being closed to the box body, and the possibility of damage to the structure due to uneven weight is reduced.

Drawings

FIG. 1 is a schematic view of the internal arrangement of a batch tank structure of the present utility model;

FIG. 2 is a partial schematic view of FIG. 1;

FIG. 3 is a partial schematic view of B of FIG. 1;

FIG. 4 is a schematic view showing the arrangement of the opening state of the front door body and the side door body of the metering box structure of the utility model;

FIG. 5 is a schematic view showing the arrangement of the open state of the rear door body of the metering box structure of the present utility model;

FIG. 6 is a partial schematic view of FIG. 5C;

FIG. 7 is a partial schematic view of D of FIG. 5;

FIG. 8 is a partial schematic view of E of FIG. 5;

fig. 9 is a schematic diagram of a side door lock and side lock of a metering box structure according to the present utility model.

Reference numerals illustrate:

the box 1, the hinge mounting position 101, the link mounting position 102, the positioning pin 103, the positioning plate 104, the positioning guide groove 105, the grip recess 106, the support position 107, the front opening 11, the front door body 110, the rear opening 12, the rear door body 120, the side opening 13, the side door body 130, the front door lock 14, the slope roof structure 15, the hook structure 16, the first interlocking assembly 2, the first positioning bracket 20, the pressing plate 21, the pressing part 22, the first interlocking rod 23, the first interlocking spring 24, the rear lock catch 25, the rear lock 26, the lock bracket 261, the lock pressing piece 262, the rear lock tongue 263, the second interlocking assembly 3, the second positioning bracket 30, the guide groove 301, the rotating handle 31, the positioning rod 311, the lock hook 32, the second lock rod 33, the second interlocking spring 34, the lock bracket 35, the bracket positioning member 351, the bracket rod 352, the side door lock 4, the support part 40, the latch body 401, the handle 402, the side lock 403, the side lock catch 41, the support wheel assembly 5, the support bracket 51, the support shaft 52, the roller 53, the structure 6, and the support connecting rod 7.

Detailed Description

In order to make the technical scheme, the purpose and the advantages of the utility model more clear, the utility model is further explained below with reference to the drawings and the embodiments.

As shown in fig. 1 to 9, the metering box structure of the present utility model comprises a box 1, wherein a front opening 11 is formed on the front side of the box 1, a front door body 110 is attached to the front opening 11, a rear opening 12 is formed on the rear side of the box 1, a rear door body 120 is attached to the rear opening 12, a side opening 13 is formed beside the front opening 11 in the box 1, and a side door body 130 is attached to the side opening 13.

The front door body, the rear door body and the side door body are all in a vertical hinged door structure, and are connected through a door hinge structure in the prior art, so that the installation and application requirements of the corresponding door body on the vertical hinged door corresponding to each opening position are met.

In the following description of the structure, the structure is defined by taking the side of the structure facing the inside of the case 1 as the inner side and the side facing away from the inside of the case 1 as the outer side.

A front door lock 14 is arranged on the inner side of the front door body 110, a front lock catch is arranged on the front opening 11 side of the box body 1, and the front door lock 14 is in locking fit with the front lock catch; the front door lock 14 is provided with an unlocking external structure for unlocking the front door lock 14 outside the front door body 110; specifically, the unlocking outer structure can be a key hole in the prior art.

A plurality of interlocking components associated with the rear door body 120 and the side door body 130 are arranged in the box body 1, and when the corresponding interlocking components are in a locking state, the rear door body 120 and/or the side door body 130 are locked relative to the box body 1 and close the corresponding openings; the rear door 120 and the side door 130 have no exposed unlocking outer structure corresponding to the door locking structure.

Therefore, only when a user unlocks the locking condition of the front door lock 14 structure on the front door body 110, the front door body 110 can be unlocked to open the front opening 11; the user can further control or overhaul the devices in the functional area of the box 1 located in the setting range of the front opening 11 through the exposed front opening 11.

After the front opening 11 is opened, a user operates the corresponding interlocking assembly in the box body 1, so that the rear door body 120 or the side door body 130 can be unlocked, and the rear opening 12 or the side opening 13 is opened, thereby meeting the application requirements of control operation or maintenance operation of each part of equipment in the functional area where the rear opening 12 or the side opening 13 is arranged. The above is the basic application setting of the scheme of the present utility model.

Example 1:

in this embodiment, an application description is made to an interlocking component structure applied to the rear door body 120.

The interlocking assembly comprises an interlocking control part arranged towards the front opening 11 side and an interlocking linkage part arranged towards the rear opening 12 side, the inner side of the rear door body 120 is provided with a locking piece, and the interlocking linkage part and the locking piece are in interlocking relation; when the interlocking linkage part is in locking fit with the locking piece, the rear door body 120 is locked with the box body 1; when the interlocking control part is driven to perform control action, the interlocking linkage part is unlocked with the locking piece along with the action of the interlocking control part, and the rear door 120 is unlocked with the box body 1.

The above-mentioned interlocking assembly applied between the rear door 120 and the case 1 includes a first interlocking assembly 2 application scheme.

Specifically, the first interlocking component 2 includes a first interlocking rod 23 movably connected to the first connecting piece in a penetrating manner, and a first interlocking spring 24 is connected between the first interlocking rod 23 and the first connecting piece; the interlocking control part comprises a pressing plate 21 arranged at one end of the first interlocking rod 23, and the interlocking linkage part comprises a pushing part 22 arranged at the other end of the first connecting rod and a rear lock catch 25 arranged beside the pushing part 22; the locking element comprises a rear locking element 26 arranged on the second connecting element; when the rear lock piece 26 is abutted against the rear lock catch 25, the rear lock piece 26 is in a locking state in lock catch fit with the rear lock catch 25; when the pressing plate 21 is pressed to press the pressing portion 22 against the rear lock 26, the rear lock 26 is unlocked from the rear lock 25, and the first interlock spring 24 has a reset potential.

In practical application of the metering box structure based on the present solution, in the application of the first interlocking assembly 2, the first connecting piece includes first positioning brackets 20 disposed on two sides in the front-rear direction between the front opening 11 and the rear opening 12 in the box body 1, so that the first interlocking rod 23 installed in a penetrating manner extends in the front-rear direction of the box body 1, the pressing plate 21 is disposed towards the front opening 11, and the pressing part 22 is disposed towards the rear opening 12; the second connecting piece is the rear door 120 itself, and the rear lock 26 is disposed on the inner side of the rear door 120.

The rear lock piece 26 comprises a lock bracket 261, a first bracket hole is formed in the lock bracket 261 towards one side of the rear lock catch 25, and a second bracket hole is formed in the periphery of the lock bracket 261; the lock bracket 261 is provided with a lock pressing piece 262 in an attaching way, the second bracket hole is provided with a rear lock tongue 263 in an attaching way, a rear lock spring is connected between the lock bracket 261 and the lock pressing piece 262, and the lock pressing piece 262 is movably associated with the rear lock tongue 263; when the pressing plate 21 is pressed to press the pressing part 22 to the lock pressing part 262, the rear lock tongue 263 is retracted into the lock bracket 261, the rear lock tongue 263 is unlocked from the rear lock catch 25, and the rear lock spring has reset potential energy; when the lock pressing piece 262 is de-stressed, the rear lock spring releases reset potential energy, and the rear lock tongue 263 extends out of the lock bracket 261; when the rear lock tongue 263 abuts against the rear lock catch 25, the rear lock tongue 263 is locked to the rear lock catch 25 to form a locking fit.

The rear door 120 is arranged in a closed manner with respect to the arrangement range of the first interlocking assembly 2, and the outside of the rear door 120 is not provided with a control structure for controlling the unlocking of the first interlocking assembly 2.

When the user opens the front door body 110, the pressing plate 21 is pressed by applying force to press the first interlocking rod 23, and the first interlocking rod 23 is pushed to the rear side, so that the pushing part 22 touches the lock pressing piece 262 to unlock the rear lock tongue 263 from the rear lock catch 25, and the rear door body 120 is unlocked relative to the box body 1; the pressing portion 22 is pushed further rearward to push the rear door 120, and the rear opening 12 is opened.

When the pressing plate 21 is biased, the first interlock lever 23 is returned to the forward side by the rear lock spring.

Example 2:

in this embodiment 2, the interlocking assembly used between the rear door 120 and the case 1 includes a second interlocking assembly 3 application scheme.

In the second interlock assembly 3, the interlock control portion includes a rotation handle 31 provided on the first connection member, and the interlock portion includes a latch hook 32 coupled to the rotation handle 31; the locking piece comprises a locking bracket 35 arranged on the second connecting piece, when the locking bracket 35 is abutted to the movable range of the locking hook 32, the rotating handle 31 is rotated to enable the locking hook 32 to be in a first station position, and the locking hook 32 and the locking bracket 35 are in locking fit; when the rotating handle 31 is rotated to enable the lock hook 32 to be in the second station position, the lock hook 32 is separated from the locking bracket 35, and the lock hook 32 is unlocked from the locking bracket 35.

As a preferred embodiment, the first connecting piece comprises a second positioning bracket 30 arranged in the box body, the second interlocking assembly 3 comprises a second interlocking rod 33 rotatably connected on the second positioning bracket 30, and a second interlocking spring 34 is connected between the second interlocking rod 33 and the second positioning bracket 30; one end of the second interlocking rod 33 is provided with the rotating handle 31, and the other end of the second interlocking rod 33 is provided with the locking hook 32; when the rotating handle 31 is rotated to bring the latch hook 32 to the second station position, the second interlock spring 34 has a reset potential to reset the latch hook 32 to the first station position. When the rotational force applied to the rotary handle 31 is canceled, the second interlock spring 34 releases the return potential energy, and the rotary handle 31 returns to rotate to link the lock hook 32 to the first station position.

The second positioning bracket 30 is provided with an arc-shaped guiding groove 301, the rotating handle 31 is provided with a positioning rod 311, the positioning rod 311 is connected in the guiding groove 301 in a penetrating way, and when the rotating handle 31 is rotated, the positioning rod 311 performs guiding movement along the guiding direction of the guiding groove 301; when the rotational force is removed, the rotational handle 31 is guided by the guide groove 301 to perform a stable restoring rotational movement along with the positioning lever 311.

The second interlock assembly 3 is optionally provided between the rear door 120 and the case 1, either alone or in combination with the first interlock assembly 2.

In the process of using the first interlocking component 2 and the second interlocking component 3 in combination, the second interlocking component 3 needs to be unlocked first, and then the pressing plate 21 is pressed by applying force to push the back door 120 back to open.

Example 3:

in the present embodiment, an application description is made to an interlocking assembly structure applied to the side door body 130.

Inside the case 1, a side door lock 4 is disposed between the front opening 11 and the side opening 13, a side lock catch 41 is disposed inside the side door 130, and the side door lock 4 and the side lock catch 41 are locked and matched to form the interlocking assembly.

Specifically, the side door lock 4 includes a support portion 40 disposed between the front opening 11 and the side opening 13, a latch body 401 disposed in the support portion 40, a handle 402 disposed at one end of the latch body 401 and facing the front opening 11, a side lock tongue 403 disposed at the other end of the latch body 401 and facing the side opening 13, and a side lock spring connected between the latch body 401 and the support portion 40; the side lock tongue 403 is in locking engagement with the side lock catch 41.

When the handle 402 is pulled to move towards the front opening 11 side, the side lock spring has reset potential, the side lock bolt 403 is pulled away from the side lock catch 41, the side lock 4 and the side lock catch 41 are in an unlocking state, and the side door body 130 can be opened; when the pulling force pulling the handle 402 is cancelled, the side lock spring releases the reset potential energy to reset the side lock tongue 403 towards the side opening 13, so that the application requirement of locking the side lock tongue 403 to the side lock 41 when the side door body 13 is closed can be met.

Based on the above arrangement of the side door lock, the application of a scheme of opening the side door body 130 by opening the front door body 110 and then opening the side door body 130 can be satisfied.

Example 4:

as a preferable embodiment of the box body structure, the box body 1 is in a cuboid shape as a whole, a slope top structure 15 which is obliquely arranged is arranged on the top side of the box body 1, and a hook structure 16 is arranged on the side walls of two sides of the box body 1.

The front door body 110 and/or the rear door body 120 may preferably be configured in a vertical hinged door structure.

Specifically, the vertical hinged door structure comprises a door body, wherein the door body is integrally rectangular, and one end of a short side of the door body is provided with a hinge installation position 101 for installing a hinge structure 6; and a supporting wheel assembly 5 is arranged at the lower part of the inner side of the door body far away from one end of the hinge installation position 101, and locking pieces are arranged at the upper part and the lower part of the inner side of the door body. A connecting rod installation position 102 for supporting movable attachment of the connecting rod 7 is arranged at the inner side of the door body at a position, which is close to the hinge installation position 101, of the lower part of the door body; in the connecting rod installation position 102 position of the door body, the door body inboard is provided with the multiunit locating pin 103 that arranges along the door body length limit direction, the dress is provided with the locating plate 104 that the cross-section is L shape on the locating pin 103, be provided with the location guide way 105 that extends along the door body length limit direction on the locating plate 104 and set up. The bearing wheel assembly 5 comprises a bearing bracket 51 which is arranged at the lower position of the inner side of the door body, the bearing bracket 51 is connected with a bearing shaft 52 in a penetrating way, and the bearing shaft 52 is rotatably connected with a roller 53.

In the case 1, the opening is rectangular, a hinge structure 6 is attached to the edge position of one end of the short side of the opening of the case 1, and the hinge structure 6 is connected with a hinge mounting position 101 of the door body in a mounting manner; the inner side of the door body is arranged towards the opening; the box 1 is provided with a bearing position 107 below the opening, and when the door body is closed and jointed to the opening, the bearing wheel assembly 5 is supported by the upper side of the bearing position 107.

In the application of the front door body 110 or the rear door body 120, based on the arrangement of the hinge mounting position 101 on the door body and the combined application of the hinge structure 6 in the prior art, the door body can be attached to the opening edge side of the box body 1 at the short side position, and the application form of the vertical hinged door can be realized by the pivot overturning movement of the door body through the movement of the hinge.

On the premise of ensuring the quality of the door body in the metering box structure, the materials of the corresponding door body are sufficient, so that the door body has the defect of larger weight. The hinge structure 6 can support the door body with larger dead weight for a long time, and the hinge structure 6 is easy to damage.

Therefore, in the door body of this embodiment, a supporting wheel assembly 5 is disposed at one end far from the hinge mounting position 101; the roller 53 of the supporting wheel assembly 5 is arranged with the periphery facing downwards; the box 1 is provided with bearing position 107 below the opening of corresponding door body, and under the normal application that the door body was closed in box 1, this bearing position 107 will support the bearing to bearing wheel subassembly 5 effectively to form the support bearing effect of keeping away from hinge installation position 101 one end to the door body, make the door body can form balanced bearing relation of arranging in bearing position 107 and hinge installation position 101 on both ends position, avoided only by the hinge structure 6 support bearing on hinge installation position 101 and the structural damage condition that causes.

A structure of the rear door 120 will be described as an example. That is, the door body is the rear door body 120, and in the middle position of the door body far away from one end of the hinge mounting position 101 in the application case that the opening is the rear opening, the locking bracket is disposed on the inner side of the door body, so as to meet the application requirement of setting the second interlocking component between the rear door body 120 and the box body 1.

The locking bracket comprises bracket locating pieces 351 arranged at the upper end and the lower end of the inner side of the door body, bracket rods 352 are connected between the bracket locating pieces 351 at the two ends, the extending direction of the bracket rods 352 is along the short side direction of the door body, and a space is reserved between the bracket rods 352 and the door body.

A grip concave position 106 is concavely arranged at one end of the door body far away from the hinge mounting position 101 and the outer side of the door body faces to the inner side; the grip recess 106 is located between the bracket positioning members 351 at both ends. Based on the arrangement of the grip concave 106, the application requirement that the rear door 120 is further opened from the rear side of the box 1 after the rear door 120 is opened by a worker can be met.

In the above-described side-hung door structure, the lock of the door body is provided as the rear lock structure in embodiment 1.

The foregoing is merely a preferred embodiment of the present utility model, and modifications of the embodiments described above can be made by those skilled in the art without departing from the implementation principles of the present utility model, and the corresponding modifications should also be considered as the protection scope of the present utility model.

Claims (10)

1. The metering box structure is characterized by comprising a box body, wherein the front side of the box body is provided with a front opening, a front door body is arranged on the front opening in an attached mode, the rear side of the box body is provided with a rear opening, and a rear door body is arranged on the rear opening in an attached mode; an interlocking component is arranged in the box body and comprises an interlocking control part arranged towards the front opening side and an interlocking linkage part arranged towards the rear opening side, a locking piece is arranged at the inner side of the rear door body, and an interlocking relation is formed between the interlocking linkage part and the locking piece; when the interlocking linkage part is in locking fit with the locking piece, the rear door body is locked with the box body; when the interlocking control part is driven to perform control action, the interlocking linkage part is unlocked with the locking piece along with the action of the interlocking control part, and the rear door body and the box body are unlocked.

2. The metering box structure of claim 1, wherein the box body is provided with a side opening beside the front opening, and a side door body is arranged on the side opening in an attached mode; the side door lock is arranged between the front opening and the side opening, a side door lock catch is arranged on the inner side of the side door body, and the side door lock is in locking connection with the side door lock catch.

3. The metering box structure as claimed in claim 2, wherein said side door lock includes a support portion provided between said front opening and said side opening, a latch body provided in said support portion, one end of said latch body being provided with a pull handle toward said front opening side, the other end of said latch body being provided with a side lock tongue toward said side opening side, a side lock spring being connected between said latch body and said support portion; the side lock bolt is matched with the side door lock catch in a locking way.

4. The metering box structure of claim 1, wherein a front door lock is arranged at the inner side of the front door body, a front lock catch is arranged at the front opening side of the box body, and the front door lock is in locking connection fit with the front lock catch; the front door lock is provided with an unlocking outer structure which is used for unlocking and controlling the front door lock on the outer side of the front door lock.

5. The metering box structure of claim 1, wherein the rear door is disposed in a closed relationship with respect to the range of disposition of the interlock assembly.

6. The metering box structure of claim 1, wherein a supporting wheel assembly is arranged at the lower part of the inner side edge position of the rear door body, and a supporting part is arranged at the lower part of the rear opening side of the box body; when the back door body is closed and covered at the back opening position, the bearing wheel assembly is supported and supported on the bearing part.

7. The metering box structure according to any one of claims 1 to 6, wherein a first positioning bracket is provided in the box body, the interlocking assembly comprises a first interlocking assembly, the first interlocking assembly comprises a first interlocking rod provided along the front-rear direction of the box body, the first interlocking rod is movably connected to the first positioning bracket in a penetrating manner along the front-rear direction, and a first interlocking spring is connected between the first interlocking rod and the first positioning bracket; a pressing plate is arranged at one end, facing the front opening, of the first interlocking rod to serve as the interlocking control part, and a pushing part is arranged at one end, facing the rear door body, of the first interlocking rod to serve as the interlocking part; the locking piece comprises a rear locking piece arranged at the inner side of the rear door body, and a rear lock catch is arranged at one side of the box body corresponding to the rear opening; when the rear locking piece and the rear lock catch form lock catch matching, the rear door body and the box body are in a locking state; when the pressing plate is pressed to enable the pressing part to be pressed to the rear lock piece, the rear lock piece is unlocked on the rear lock catch.

8. The metering box structure of claim 7, wherein the rear locking piece comprises a lock bracket arranged on the inner side of the rear door body, a first bracket hole is formed in the lock bracket towards one side of the box body, and a second bracket hole is formed in the periphery of the lock bracket; the lock bracket is provided with a lock pressing piece in an attaching way, the second bracket hole is provided with a rear lock tongue in an attaching way, a rear lock spring is connected between the lock bracket and the lock pressing piece, and the lock pressing piece is movably associated with the rear lock tongue; when the lock pressing piece is forced to push towards the rear door body, the rear lock tongue is retracted into the lock bracket, the rear lock tongue and the rear lock catch are unlocked, and the rear lock spring has reset potential energy; when the lock pressing piece is subjected to withdrawal force, the rear lock spring releases reset potential energy, and the rear lock tongue extends out of the lock bracket and is locked on the rear lock buckle.

9. The metering box structure according to any one of claims 1 to 6, wherein a second positioning bracket is arranged in the box body, the interlocking assembly comprises a second interlocking assembly, the second interlocking assembly comprises a second interlocking rod arranged along the front-back direction of the box body, the second interlocking rod is rotatably connected to the second positioning bracket, and a second interlocking spring is connected between the second interlocking rod and the second positioning bracket; a rotary handle is arranged at one end, facing the front opening, of the second interlocking rod to serve as the interlocking control part, and a lock hook is arranged at one end, facing the rear door body, of the second interlocking rod to serve as the interlocking part; the locking piece comprises a locking bracket arranged at the inner side of the rear door body, when the locking bracket is abutted to the moving range of the locking hook and enables the locking hook to be in a first station position, the locking hook and the locking bracket form locking fit, and the rear door body and the box body are in a locking state; when the rotating handle is rotated to enable the lock hook to be in the second station position, the lock hook is separated from the locking support, and the lock hook is unlocked on the locking support.

10. The metering box structure of claim 1, wherein the box body is integrally rectangular, the top side of the box body is provided with a slope top structure which is obliquely arranged, and the side walls of the two sides of the box body are provided with hook structures.

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