CN210680946U

CN210680946U - Battery refrigeration transport vehicle

Info

Publication number: CN210680946U
Application number: CN201921591416.XU
Authority: CN
Inventors: 王鸿恩
Original assignee: Henan Hengshun International Freight Forwarding Co Ltd
Current assignee: Henan Hengshun International Freight Forwarding Co Ltd
Priority date: 2019-09-23
Filing date: 2019-09-23
Publication date: 2020-06-05
Anticipated expiration: 2029-09-23

Abstract

The utility model relates to a battery refrigerated transport vehicle, which comprises a square box body and a refrigerator, wherein the box body is horizontally arranged, the box body comprises a top plate above, a bottom plate below, side plates at two sides, a front plate at one end of a carriage and a box door at the other end of the box body, and the box door is hinged on the side plates; the refrigerator is vertically arranged on the front plate and comprises a refrigerator body, an air inlet and an air outlet, the refrigerator body is vertically arranged on the front plate, the air inlet faces the refrigerator door, and the refrigerator is provided with a drying device which is opposite to the air inlet. The utility model discloses an install drying device outside the refrigerator air intake, when the refrigerant refrigeration, the advanced type of air that gets into the air intake is dry, has the interior humidity of reduction refrigerator car, avoids the effect that wets such as battery and electronic equipment.

Description

Battery refrigeration transport vehicle

Technical Field

The utility model belongs to the technical field of the technique of refrigerated transport and specifically relates to a battery refrigerated transport car is related to.

Background

The refrigerator car is a closed van-type transport vehicle for maintaining the temperature of freezing or keeping fresh of goods, a refrigerating device is arranged in the refrigerator car, the refrigerator car is often used for transporting dairy products, vegetables, fruits, vaccines, medicines and the like, besides, the temperature of batteries, electronic equipment and the like is not too high in the transportation process, and particularly when the outside temperature is high in summer, the batteries, the electronic equipment and the like are overheated due to normal-temperature transportation, so that potential risks of explosion exist, and the refrigerator car is also commonly used for transporting.

Patent document CN207129026U discloses a sealed refrigerator car, which is provided with a plurality of interlayer assemblies in a box body, and an anti-collision plate and a drain hole are arranged on the interlayer assemblies to prevent water drops on upper-layer goods from flowing down to lower-layer goods.

Among the above-mentioned prior art, when transporting the battery with this sealed refrigerator car, the door is in the open mode during goods handling, leads to in the great air admission refrigerator car of external humidity, especially summer, and external air humidity is generally higher, leads to the air humidity in the refrigerator car big, and battery and electronic equipment etc. wet easily.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a battery refrigerated transport vechicle through installation dehydrating unit in the refrigerator car, makes it have the humidity in the reduction refrigerator car, avoids the effect that wets such as battery and electronic equipment.

The above object of the present invention is achieved by the following technical solutions:

a battery refrigerated transport vehicle comprises a square box body and a refrigerator, wherein the box body is horizontally arranged and comprises an upper top plate, a lower bottom plate, side plates on two sides, a front plate positioned at one end of a carriage and a box door positioned at the other end of the box body, and the box door is hinged on the side plates; the refrigerator is vertically arranged on the front plate and comprises a refrigerator body, an air inlet and an air outlet, the refrigerator body is vertically arranged on the front plate, the air inlet faces the refrigerator door, and the refrigerator is provided with a drying device which is opposite to the air inlet.

Through adopting above-mentioned technical scheme, the staff opens the refrigerator, and the refrigerator begins the air inlet, and the air is earlier through setting up the drying device outside the air intake before getting into the air intake, and drying device carries out the drying back to the air, and dry air gets into and refrigerates in the refrigerator and obtains dry cold air and discharge through the air outlet, reaches the effect of carrying out drying and dehumidification to the air in the box.

The utility model discloses further set up to: the drying device comprises a drying assembly and a connecting assembly, the connecting assembly is connected with the drying assembly and the refrigerator, the drying assembly comprises a lifting rod and a drying bag, the drying bag is net-shaped, the drying bag is hung on the lifting rod, a drying agent is arranged in the drying bag, and the drying assembly is arranged on the connecting assembly and is opposite to the air inlet.

By adopting the technical scheme, the wet air enters the drying device, and the drying agent dries and dehumidifies the wet air, so that the humidity of the air entering the air inlet is reduced.

The utility model discloses further set up to: the connecting assembly consists of a fixing frame and a storage frame, and the fixing frame is arranged on the periphery of the air inlet; the vertical installation of storage frame is on fixed frame, and the storage frame includes dead lever and hold up tank, and the dead lever has two, and two vertical installations of dead lever are just located the both sides of air intake on fixed frame, and the hold up tank is vertical to be installed between two dead levers, has seted up netted bleeder vent on the vertical lateral wall of hold up tank, and in the hold up tank was arranged in to dry package, the notch top at the hold up tank was erect to the shadoof, drier can reuse through the drying after using many times.

Through adopting above-mentioned technical scheme, coupling assembling sets up fixed frame and storage frame, stores and sets up the hold up, and the hold up has netted bleeder vent, arranges dry package in the hold up, and the shadoof erects in the notch top of hold up, when the drier needs drying, carry the dry package of carrying in the shadoof with the hold up and propose can, reached the demountable installation of dry subassembly, be convenient for carry on reprocessing with recycling to the drier.

The utility model discloses further set up to: the horizontal cross sections of the two fixing rods are cross-shaped, sliding grooves are vertically formed in the two sides of the air inlet on the side wall of the fixing frame, the bottoms of the sliding grooves do not penetrate through the bottom of the fixing frame, the cross section shapes of the sliding grooves are matched with the cross section shapes of the fixing rods, and the fixing rods can be vertically inserted into the sliding grooves.

Through adopting above-mentioned technical scheme, through dead lever and fixed frame sliding fit, make to store the frame and can dismantle with fixed frame and be connected, when needs wash the hold up tank, take out the dead lever from the spout and can separate fixed frame and hold up tank.

The utility model discloses further set up to: the air outlet sets up in the upper end of fuselage and towards the roof, and the below laminating roof of roof is provided with the air diffuser that has the cavity, and the one end and the air outlet fixed connection of air diffuser, the other end of air diffuser extend to the one end that is equipped with the chamber door of box, have seted up a plurality of air diffusers on the air diffuser, and a plurality of air diffusers all communicate with the air outlet of refrigerator through the inner tube way of air diffuser, and a plurality of air diffusers evenly distributed on the length direction of air diffuser.

Through adopting above-mentioned technical scheme, a plurality of air diffusers all communicate with the air outlet and a plurality of air diffusers evenly distributed on the length direction of air diffuser plate, blow off from a plurality of air diffusers after the air business turn over wind gap after the drying discharges, make dry air evenly distributed in the box.

The utility model discloses further set up to: every a plurality of slides have been seted up along the equal level of box length direction on the curb plate, the opening of slide is relative and set up with high on two curb plates, and goods shelves have been placed to equal level between two slides that two curb plates are relative.

Through adopting above-mentioned technical scheme, set up multilayer goods shelves, avoid the goods case that loads the battery on the goods shelves to pile up, increased the space between the goods case, promote the circulation of dry air in the box.

The utility model discloses further set up to: the goods shelf comprises an outer frame and supporting rods, the supporting rods are arranged in the outer frame at intervals, and the goods shelf is erected between two opposite slideways.

Through adopting above-mentioned technical scheme, the branch interval sets up in the frame, has reduced the contact surface of goods bottom of the case portion and goods shelves, promotes the circulation of dry air between goods case and goods shelves.

The utility model discloses further set up to: the limiting device is mounted at one end, close to the box door, in the slide way and comprises a clamping plate and a clamping groove, the clamping plate is an I-shaped plate and comprises a first baffle and a second baffle which are oppositely arranged, the length direction of the connecting plate is parallel to the side plates, the two ends of the connecting plate are respectively connected with the first baffle and the second baffle, and the first baffle is located at one end, close to the front plate, of the clamping plate; the draw-in groove includes draw-in groove and lower draw-in groove, and lower draw-in groove level is seted up on the lower surface of slide, and draw-in groove and cardboard correspond down, goes up the draw-in groove and sets up on the upper surface of slide, goes up the draw-in groove and is the T-slot, goes up the draw-in groove and corresponds with the connecting plate and the baffle one of cardboard.

By adopting the technical scheme, when goods are loaded and unloaded and the goods shelf is required to be moved along the length direction of the box body, the clamping plate is pushed into the upper clamping groove, so that the clamping plate does not block the movement of the goods shelf; in the transportation process, place the cardboard in lower draw-in groove and the cardboard stretches out the worker's groove, prevent that goods shelves from sliding along box length direction.

The utility model discloses further set up to: and a spring bolt is arranged on the second baffle plate, a second stop block is arranged at one end of the side plate facing the box door, and the second stop block is positioned at the lower end of the upper clamping groove.

Through adopting above-mentioned technical scheme, when the goods handling need follow box length direction and remove goods shelves, push the cardboard to last draw-in groove in, pop out the spring bolt and support in the top of dog two, prevent the cardboard whereabouts.

To sum up, the utility model discloses a beneficial technological effect does:

1. the side wall of the refrigerator, which is provided with the air inlet, is provided with the drying device, the drying device is arranged outside the air inlet and opposite to the air inlet, air is dried by the drying device and then enters the refrigerator for refrigeration, and dry cold air is obtained and discharged through the air outlet, so that the effect of drying and dehumidifying the air in the refrigerator body is achieved;

2. the drying device comprises a storage frame, a lifting rod, a drying bag, a fixing frame, a lifting rod, a drying component and a storage groove, wherein the storage frame comprises two fixing rods and the storage groove, the two fixing rods are vertically arranged on the fixing frame and are positioned at two sides of an air inlet, the storage groove is vertically arranged between the two fixing rods, two side walls of the storage groove, which are opposite to the air inlet, are respectively provided with a reticular air hole, the drying bag is arranged in the storage groove, the lifting rod is erected above a notch of the storage groove, and the drying agent can be reused after being dried after being used for multiple times, so that the drying;

3. through every a plurality of slides have been seted up along the equal level of box length direction on the curb plate, the opening of slide is relative and with high setting on two curb plates, has all placed a goods shelves between two relative slides, and the goods case that loads the battery on the goods shelves is avoided in the setting of multilayer goods shelves piles up, has increased the space between the goods case, promotes the circulation of dry air in the box.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic view of the internal structure of the present invention;

FIG. 3 is an exploded view of a refrigerator and dryer apparatus;

FIG. 4 is a schematic perspective view of the storage tank;

FIG. 5 is a partially enlarged schematic view of portion A of FIG. 1;

FIG. 6 is a perspective view of the card;

fig. 7 is a partially enlarged structural view of a portion B in fig. 2.

In the figure, 1, a box body; 11. a top plate; 12. a base plate; 13. a front plate; 14. a side plate; 15. a box door; 2. a refrigerator; 21. a body; 22. an air inlet; 23. an air outlet; 3. a drying device; 31. a fixing frame; 311. a chute; 32. a storage rack; 321. fixing the rod; 322. a storage tank; 323. a groove; 33. a drying assembly; 331. lifting a rod; 332. drying the bag; 4. a diffuser plate; 5. a diffuser; 6. a slideway; 61. a first stop block; 7. a limiting device; 71. clamping a plate; 711. a first baffle plate; 7111. a spring bolt; 712. a second baffle plate; 713. a connecting plate; 72. a card slot; 721. an upper clamping groove; 722. a lower clamping groove; 8. a shelf; 81. an outer frame; 82. a strut; 9. and a second stop block.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, for the utility model discloses a battery refrigerated transport vehicle, which comprises a square box body 1 and a refrigerator 2, wherein the box body 1 is horizontally arranged, the box body 1 comprises an upper top plate 11, a lower bottom plate 12 and side plates 14 at two sides, a front plate 13 at one end of a carriage and a box door 15 at the other end of the box body, the box door 15 is hinged on the side plates, and the box door is positioned at one end of the box body; the refrigerator 2 is vertically mounted on the front plate 13.

Referring to fig. 2 and 3, the refrigerator 2 includes a body 21, an air inlet 22 and an air outlet 23, the body 21 is attached to the front plate 13, the air inlet 22 faces the door 15, the drying device 3 is installed on a side wall of the refrigerator 2 where the air inlet 22 is provided, the drying device 3 is opposite to the air inlet 22, the drying device 3 includes a fixing frame 31, a storage frame 32 and a drying assembly 33, the fixing frame 31 is a square frame, the fixing frame 31 is installed on a side wall of the refrigerator 2, and the fixing frame 31 is located at the periphery of the air inlet 22; the storage rack 32 is vertically installed on the fixed frame 31, the storage rack 32 comprises two fixing rods 321 and two storage tanks 322, the horizontal sections of the two fixing rods 321 are cross-shaped, the storage tanks 322 are vertically installed between the two fixing rods 321, and meshed air holes are formed between the two side walls of the storage tanks 322 opposite to the air inlets 22; the drying component 33 comprises a lifting rod 331 and a drying bag 332, the drying bag 332 is in a net shape, the drying bag 332 is hung on the lifting rod 331, a drying agent is filled in the drying bag 332, the drying agent can be recycled for many times, when the using time of the drying agent is long, the drying agent and the drying bag 332 are placed in an oven to be dried and then can be used again, and the drying bag 332 is placed in the storage tank 322; referring to fig. 4, grooves 323 are formed on both sides of the notch above the storage groove 322; when the drying assembly 33 is installed, the drying bag 332 is placed in the storage tank 322, the lifting rod 331 is arranged above the groove 323, and when the drying agent needs to be reprocessed, the lifting rod 331 is lifted to lift the drying bag 332 out of the storage tank 322 and process the drying bag.

Referring to fig. 3, two vertical frames of the fixing frame 31 are provided with sliding grooves 311, the sliding grooves 311 are vertically provided, the bottom of the sliding grooves 311 does not penetrate through the bottom of the fixing frame 31, referring to fig. 4, the cross-sectional shape of the sliding grooves 311 is matched with the cross-sectional shape of the fixing rods 321, the fixing rods 321 can be vertically inserted into the sliding grooves 311, after the drying agent is placed into the storage groove 322, the two fixing rods 321 are respectively vertically inserted into the sliding grooves 311, when the storage frame 32 is used for a long time, dust may be accumulated on the storage frame 32 to prevent air from passing through the storage frame 32 and entering the air inlet 22, and therefore frequent cleaning is required, when the storage frame 32 needs to be cleaned, the fixing rods 321 are drawn out of the sliding grooves 311, the drying assemblies 33.

Referring to fig. 2, an air outlet 23 is arranged at the upper end of the refrigerator 2, the air outlet 23 faces the top plate 11, an air diffuser plate 4 is horizontally arranged on the top plate 11, the air diffuser plate 4 is provided with a cavity, one end of the air diffuser plate 4 is fixedly connected with the air outlet 23, and the other end of the air diffuser plate 4 extends to one end of the refrigerator body 1 provided with the refrigerator door 15; a plurality of square air diffusers 5 are arranged on the air diffuser plate 4, the air diffusers 5 are communicated with an air outlet 23 of the refrigerator 2 through an internal pipeline of the air diffuser plate 4, and the air diffusers 5 are uniformly arranged on the air diffuser plate.

Referring to fig. 1 and 2, during the battery transportation, when the goods case of loading the battery was put through the mode of piling up, the air between the goods case is difficult to circulate, for promoting the circulation of air between the battery goods case, and then carry out drying and refrigeration to the air in the box 1 better, a plurality of slides 6 have been seted up along the equal level of box length direction on two curb plates 14, the opening of slide 6 is relative and with high setting on two curb plates, vertically in every slide 6 install a dog 61, dog 61 is located the one end that slide 6 is close to the front bezel. The goods shelves 8 are horizontally arranged between two opposite slideways 6 with the same height on the two side plates, each goods shelf 8 comprises an outer frame 81 and a supporting rod 82, the supporting rods 82 are arranged in the outer frames 81 at intervals, the outer frames 81 are erected on the two opposite slideways 6, a plurality of goods shelves 8 are horizontally arranged between every two opposite slideways, and the goods shelves 8 are arranged along the length direction of the box body; during the battery transportation, place in the goods case after packing the battery, pull out goods shelves 8 in the refrigerator car one by one, place the goods case on goods shelves 8, use tools such as fork truck to place goods shelves 8 level on slide 6, to 1 front bezel 13 orientation propelling movement of box to the propelling movement of goods shelves 8 one end stop the propelling movement when a dog 61, accomplish the loading of first part goods, continue to place the goods case on other goods shelves 8 afterwards, place this goods shelves 8 and push away to the box on slide 6, stop the loading until this goods shelves 8 contact the place ahead goods shelves 8.

Referring to fig. 5 and 6, during transportation, the goods shelf 8 may slide towards one end of the box door 15 due to bumping of vehicles, in order to prevent the goods shelf 8 from sliding along the length direction of the box body, a limiting device 7 is arranged on one end, close to the box door, of each slide 6, the limiting device 7 comprises a clamping plate 71 and a clamping groove 72, the clamping plate 71 is an i-shaped plate, the clamping plate 71 is located in the slide 6 and close to one end of the box door, the clamping plate 71 comprises a first baffle 711, a second baffle and a connecting plate 713, the first baffle 711 and the second baffle 712 are arranged opposite to each other, the connecting plate 713 connects the first baffle 711 and the second baffle 712, and in combination with fig. 7, the connecting plate 713 is parallel to the side plate 14 in; the clamping groove 72 comprises an upper clamping groove 721 and a lower clamping groove 722, the lower clamping groove 722 is an I-shaped groove, the lower clamping groove 722 is horizontally arranged on the lower surface of the slide 6, the lower clamping groove 722 corresponds to the clamping plate 71, the upper clamping groove 721 is arranged on the upper surface of the slide 6, the upper clamping groove 721 is a T-shaped groove, and the upper clamping groove 721 corresponds to the connecting plate 713 and the first baffle 711 of the clamping plate 71. In the transportation process, the goods shelf 8 is placed on the slide 6, the clamping plate 71 is placed in the lower clamping groove 722, the lower clamping groove 722 is exposed at the upper end of the clamping plate 71, the sliding of the goods shelf 8 along the length direction of the slide 6 is blocked, when the goods shelf 8 needs to be taken out for loading and unloading goods, the clamping plate 71 is lifted out from the lower clamping groove 722, the upper clamping groove 721 moves upwards, the connecting plate 713 and the first baffle 711 of the clamping plate 71 extend into the upper clamping groove 721, and the clamping plate 71 cannot shield the goods shelf 8 to move along the length direction of the slide 6 at the. The second baffle 712 is provided with a spring bolt 7111, the spring bolt 7111 can extend out towards the side plate 14 or rebound towards the direction far away from the side plate 14, the side plate 14 is provided with a plurality of second baffles 9 towards one end of the box door 15, each second baffle 9 is positioned at the lower end of one upper clamping groove 721, when the goods shelf 8 is moved, the clamping plate 71 slides to the upper clamping groove 721, the first baffle 711 and the connecting plate 713 enter the upper clamping groove 721, the spring bolt 7111 is pushed to enable the spring bolt 7111 to abut against the second baffles 9, the clamping plate 71 is prevented from falling down, and at the moment, the goods shelf 8 can be pushed or pulled out along the length direction of the slide 6 to load and.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A battery refrigerated transport vehicle comprises a square box body (1) and a refrigerator (2), wherein the box body (1) is horizontally arranged, the box body (1) comprises a top plate (11) above, a bottom plate (12) below, side plates (14) on two sides, a front plate (13) positioned at one end of a carriage and a box door (15) positioned at the other end of the box body (1), and the box door (15) is hinged on the side plates (14); refrigerator (2) vertical installation is on front bezel (13), its characterized in that: the refrigerator (2) comprises a refrigerator body (21), an air inlet (22) and an air outlet (23), the refrigerator body (21) is vertically arranged on the front plate (13), the air inlet (22) faces the refrigerator door (15), the refrigerator (2) is provided with the drying device (3), and the drying device (3) is opposite to the air inlet (22).

2. A battery refrigerated transport vehicle as claimed in claim 1 wherein: the drying device (3) comprises a drying component (33) and a connecting component, the connecting component is connected with the drying component (33) and the refrigerating machine (2), the drying component (33) comprises a lifting rod (331) and a drying bag (332), the drying bag (332) is net-shaped, the drying bag (332) is hung on the lifting rod (331), a drying agent is filled in the drying bag (332), the drying component (33) is installed on the connecting component, and the drying component (33) is opposite to the air inlet (22).

3. A battery refrigerated transport vehicle as claimed in claim 2 wherein: the connecting assembly consists of a fixed frame (31) and a storage frame (32), and the fixed frame (31) is arranged on the periphery of the air inlet (22); storage rack (32) are vertical to be installed on fixed frame (31), storage rack (32) are including dead lever (321) and hold up tank (322), dead lever (321) have two, two dead lever (321) are vertical to be installed on fixed frame (31) and are located the both sides of air intake (22), hold up tank (322) are vertical to be installed between two dead lever (321), netted bleeder vent has been seted up on the vertical lateral wall of hold up tank (322), hold up tank (322) are arranged in to dry package (332), notch top at hold up tank (322) is erect in lifter (331), the drier can reuse through drying after using many times.

4. A battery refrigerated transport vehicle as claimed in claim 3 wherein: the horizontal cross sections of the two fixing rods (321) are cross-shaped, sliding grooves (311) are vertically formed in the two sides of the air inlet (22) on the side wall of the fixing frame (31), the bottoms of the sliding grooves (311) do not penetrate through the bottom of the fixing frame (31), the cross section shapes of the sliding grooves (311) are matched with the cross section shapes of the fixing rods (321), and the fixing rods (321) are vertically inserted into the sliding grooves (311).

5. A battery refrigerated transport vehicle as claimed in claim 1 wherein: the air outlet (23) is arranged at the upper end of the machine body (21) and the air inlet faces the top plate (11), an air diffuser plate (4) is arranged below the top plate (11), a cavity is formed in the air diffuser plate (4), one end of the air diffuser plate (4) is fixedly connected with the air outlet (23), the other end of the air diffuser plate (4) extends to one end, provided with a box door (15), of the box body (1), a plurality of air diffusers (5) are arranged on the air diffuser plate (4), the air diffusers (5) are communicated with the air outlet (23) of the refrigerator (2) through inner pipelines of the air diffuser plate (4), and the air diffusers (5) are uniformly arranged on the air diffuser plate (4).

6. A battery refrigerated transport vehicle as claimed in claim 1 wherein: every a plurality of slides (6) have been seted up along the equal level of box (1) length direction on curb plate (14), and the opening of slide (6) is relative and sets up with high on two curb plates (14), and the equal vertical dog (61) of installing of one end near the front bezel in every slide (6), and goods shelves (8) have been placed to equal level between two relative slides (6) on two curb plates (14).

7. A battery refrigerated transport vehicle as claimed in claim 6 wherein: the goods shelf (8) comprises an outer frame (81) and supporting rods (82), wherein the supporting rods (82) are arranged in the outer frame (81) at intervals, and the outer frame (81) is erected on two opposite slideways (6).

8. A battery refrigerated transport vehicle as claimed in claim 7 wherein: a limiting device (7) is mounted at one end, close to the box door, in the slide way (6), the limiting device (7) comprises a clamping plate (71) and a clamping groove (72), the clamping plate (71) is an I-shaped plate, the clamping plate (71) comprises a first baffle (711) and a second baffle (712) which are oppositely arranged, the length direction of the connecting plate (713) is parallel to the side plate (14), two ends of the connecting plate (713) are respectively connected with the first baffle (711) and the second baffle (712), and the first baffle (711) is located at one end, close to the front plate (13), of the clamping plate (71); the clamping groove (72) comprises an upper clamping groove (721) and a lower clamping groove (722), the lower clamping groove (722) is an I-shaped groove, the lower clamping groove (722) is horizontally arranged on the upper side wall of the slide way (6), the lower clamping groove (722) corresponds to the clamping plate (71), the upper clamping groove (721) is arranged on the lower side wall of the slide way (6), the upper clamping groove (721) is a T-shaped groove, and the upper clamping groove (721) corresponds to the connecting plate (713) and the first baffle plate (711) of the clamping plate (71).

9. A battery refrigerated transport vehicle as claimed in claim 8 wherein: and a spring bolt (7111) is arranged on the second baffle plate (712), a second stop block (9) is arranged at one end of the side plate facing the box door, and the second stop block (9) is positioned at the lower end of the upper clamping groove (721).