CN214699138U - Mini-tiller box - Google Patents

Abstract

The utility model relates to a field of mini-tiller, in particular to a mini-tiller box body, which comprises a flange plate, an upper box body and a lower box body, wherein the bottom of the upper box body is provided with an upper box body connecting seat, the bottom of the lower box body is provided with a lower box body connecting seat, and the upper box body connecting seat and the lower box body connecting seat are detachably connected; go up the box and include the case main part, go up and be equipped with speed change chamber and power input chamber in the case main part, go up and be equipped with the link that is used for flange dish in the case main part, the opening in power input chamber is located the link, its characterized in that: the upper box main body is also provided with a heat dissipation cavity, an opening of the heat dissipation cavity is positioned on the connecting end, and the heat dissipation cavity is communicated with the power input cavity. This scheme has improved the heat-sinking capability of last box.

Description

Mini-tiller box

Technical Field

The utility model relates to a plough the machine field a little, concretely relates to plough quick-witted box a little.

Background

The box body of the mini-tiller comprises an upper box body and a lower box body, wherein parts such as a transmission are installed in the upper box body, only a circular cavity is usually arranged on the upper box body of the current mini-tiller (the circular cavity is used for accommodating, installing the parts such as the transmission and enabling a shaft for transmitting power to pass through, the space of the circular cavity can be used for installing the parts such as the transmission), parts such as the transmission are installed in the upper box body, then a flange plate is used for covering the circular cavity of the upper box body, the flange plate seals the upper box body, the space of the circular cavity in the upper box body can be used for installing the parts such as the transmission, and therefore, more heat dissipation spaces are not arranged on the upper box body, heat dissipation of the transmission in the upper box body during working is not facilitated, and the service life of the transmission is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a machine box is ploughed a little to improve the heat-sinking capability of last box.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a mini-tiller box body comprises a flange plate, an upper box body and a lower box body, wherein an upper box body connecting seat is arranged at the bottom of the upper box body; go up the box and include the case main part, go up and be equipped with speed change chamber and power input chamber in the case main part, go up and be equipped with the link that is used for flange dish in the case main part, the opening in power input chamber is located the link, its characterized in that: the upper box main body is also provided with a heat dissipation cavity, an opening of the heat dissipation cavity is positioned on the connecting end, and the heat dissipation cavity is communicated with the power input cavity.

The principle and the advantages of the scheme are as follows: the upper box body and the lower box body are assembled together through the connection of the upper box body connecting seat and the lower box body connecting seat. The speed changing cavity is used for mounting parts such as a speed changer and the like, and the power input cavity is used for enabling the shaft to penetrate through, so that power is transmitted between the upper box body and the box body of the engine of the mini-tiller. The connecting end is used for being connected with the flange plate, and the power input cavity and the heat dissipation cavity are covered through the flange plate. In the scheme, the heat dissipation cavity is additionally arranged on the upper box body, so that the heat dissipation space is increased, heat dissipation is facilitated, the heat dissipation capacity of the upper box body is improved, and the service life of parts such as a transmission is prolonged.

Preferably, as an improvement, the heat dissipation cavity is located below the power input cavity, the power input cavity is located between the transmission cavity and the connecting end, and the upper box connecting seat is located below the power input cavity.

Because it does not set up the heat dissipation chamber on the last box among the prior art, therefore the bottom at the position at power input chamber place is higher than the bottom of last box, go up the position at power input chamber place between the bottom of box and the link like this, thereby make the bottom of going up the box apart from the link far away, it is far away from the link to go up the box connecting seat like this, the variable speed chamber of going up the box is far away to the distance between the quick-witted engine box of ploughing a little, also be exactly the focus of going up the box and to ploughing a little distance between the quick-witted engine box far, the peasant is more hard when controlling the machine of ploughing a little like this, the operation is inconvenient.

In this scheme, because the heat dissipation chamber is located the below in power input chamber, the heat dissipation chamber not only can play the effect that improves the heat dissipation like this, the setting in heat dissipation chamber simultaneously, make the position at power input chamber place extend downwards, the high sum that also is power input chamber and heat dissipation chamber is greater than the height in power input chamber among the prior art, the position of heat dissipation chamber bottom can be exactly the bottom of last box like this, consequently, it can directly set up on the bottom in heat dissipation chamber to go up the box connecting seat, it is less to go up the distance between the link to go up the box connecting seat, thereby it is nearer to the distance between the quick-witted engine box of machine of ploughing a little to make the focus of last box, the peasant is more laborsaving when controlling the machine of ploughing a little like this, it is more convenient to operate.

In addition, the upper box connecting seat is located at the bottom of the position of the heat dissipation cavity, the upper box connecting seat can be closer to the box of the mini-tiller engine, so that the length of the upper box is not restricted by the position of the upper box connecting seat any more, the length of the upper box can be reduced, the size of the upper box can be reduced, and the internal structure of the upper box is more compact.

Preferably, as an improvement, be equipped with a plurality of first mounting holes on the upper box connecting seat, be equipped with a plurality of second mounting holes on the lower box connecting seat, a plurality of first mounting holes dislocation set on the upper box connecting seat, a plurality of second mounting holes dislocation set on the box connecting seat down.

The staggered arrangement of the plurality of first mounting holes on the upper box body connecting seat means that the plurality of first mounting holes are asymmetrically arranged with the center of the upper box body connecting seat, the staggered arrangement of the plurality of second mounting holes on the lower box body connecting seat means that the plurality of second mounting holes are asymmetrically arranged with the center of the lower box body connecting seat, therefore, when the upper box body and the lower box body are assembled together through the bolts, if the assembling direction of the lower box body and the upper box body is incorrect, the second mounting hole of the lower box connecting seat is not opposite to the first mounting hole of the upper box connecting seat, the bolt cannot penetrate through the first mounting hole of the upper box connecting seat and the second mounting hole of the lower box connecting seat, an assembler can find that the assembling direction of the upper box and the lower box is incorrect in time and only under the condition that the assembling direction of the upper box and the lower box is correct, the bolt can pass through the first mounting hole on the upper box connecting seat and the second mounting hole on the lower box connecting seat smoothly. In conclusion, by the scheme, the situation that the assembling directions of the upper box body and the lower box body are wrong is avoided.

Preferably, as an improvement, the upper box main body is provided with a main shaft hole, an auxiliary shaft hole and a reverse blocking hole. The main shaft hole is used for accommodating the main shaft, the auxiliary shaft hole is used for accommodating the auxiliary shaft, and the reverse gear hole is used for installing a reverse gear. The machine is ploughed a little on current market does not set up the hole of backing a gear, and in this scheme through setting up the hole of backing a gear on last box to can install the gear that backs, make to plough a little like this and have the function of backing a gear, the operation of the machine is ploughed a little more to be convenient for.

Preferably, as an improvement, the lower box body includes the lower box main part, is equipped with a plurality of strengthening ribs on the side of lower box main part, and the strengthening rib is cylindric. Therefore, the design of the cylindrical reinforcing ribs reduces the weight of the lower box body and increases the strength, so that the lower box body is attractive and durable.

Preferably, as an improvement, the ring flange includes the ring flange body, is equipped with a plurality of engaging lugs on the edge of ring flange body, is equipped with the first heat dissipation chamber of circular shape on the ring flange body, fixedly connected with annular boss in the first heat dissipation chamber, and the both ends of boss link up, are equipped with the extension on the ring flange body, are equipped with the second heat dissipation chamber on the extension, and first heat dissipation chamber and second heat dissipation chamber communicate.

The connecting lug is used for being connected with the upper box body of the mini-tiller, so that the flange plate is connected to the upper box body of the mini-tiller. The first heat dissipation cavity and the second heat dissipation cavity are arranged to dissipate heat. The boss has an inner bore for passing a shaft therethrough, thereby enabling power to be transmitted between the engine and the transmission.

In order to increase the heat dissipation space of the upper box body of the mini-tiller, the heat dissipation cavity is additionally arranged on the upper box body of the mini-tiller, so that the size of the upper box body of the mini-tiller is increased, and the conventional flange plate cannot be matched with the improved upper box body of the mini-tiller due to the small size, so that the upper box body of the mini-tiller cannot be covered. And be equipped with the extension on the ring flange body in this scheme, the setting of extension makes the ring flange body and plough the area of contact grow of quick-witted upper box a little, and the extension is used for covering the heat dissipation cavity of ploughing the machine of ploughing a little and add on the box, and the ring flange can cover like this and close on the last box of ploughing a little after the improvement to make plough quick-witted box a little and improve the assembly ring flange that can be normal when the heat-sinking capability.

The extension part is provided with the second heat dissipation cavity, so that the extension part is provided with a certain heat dissipation space, the heat dissipation capacity of the extension part is improved, and the influence on the heat dissipation capacity of the flange plate due to the addition of the extension part is avoided. Simultaneously, first heat dissipation chamber and second heat dissipation chamber dispel the heat simultaneously, compare current ring flange, the obvious grow in space in heat dissipation chamber has improved the heat-sinking capability of ring flange, is favorable to improving the life of the derailleur of ploughing quick-witted box inside a little.

Preferably, as an improvement, a plurality of reinforcing ribs are arranged between the inner wall of the first heat dissipation cavity and the outer wall of the boss. Through addding the strengthening rib for the overall structure of ring flange obtains strengthening, and the overall structure of ring flange is more stable, has improved the life of ring flange, and the ring flange is more durable. Meanwhile, the reinforcing ribs are equivalent to radiating fins, and the arrangement of the reinforcing ribs is favorable for radiating heat of the upper box body of the mini-tiller.

Preferably, as an improvement, the thickness of the reinforcing rib is 1-3mm, the length of the reinforcing rib is 19-21mm, and the depth of the reinforcing rib is 21-23 mm. From this, the thickness setting of strengthening rib is in this within range, and the strengthening rib can not be too thin and influence the enhancement effect of strengthening rib, and the strengthening rib also can not be too thick and influence the radiating effect of strengthening rib simultaneously. The length setting of strengthening rib is in this within range, and the strengthening rib is strengthened stable effect better. The degree of depth setting of strengthening rib is in this within range, and the strengthening rib is strengthened stable effect and is better.

Preferably, as an improvement, the flange plate body is fixedly provided with an annular protruding part on the side surface departing from the first heat dissipation cavity, and the protruding part and the boss are coaxially arranged. The distance between the flange plate and the engine box body is reduced due to the arrangement of the protruding parts, and the flange plate is convenient to connect with the engine box body.

Preferably, as a modification, the first heat dissipation chamber extends to the projection. From this, the degree of depth grow of the first heat dissipation chamber of setting up of bulge to make the space grow in first heat dissipation chamber, further improved the heat-sinking capability of ring flange.

Drawings

Fig. 1 is a perspective view of a flange, which mainly illustrates the structures of a first heat dissipation chamber, a second heat dissipation chamber, a reinforcing rib and the like.

Fig. 2 is a perspective view of the flange, mainly illustrating the structure of the projection.

Fig. 3 is a perspective view of the upper case.

Fig. 4 is a front view of fig. 3.

Fig. 5 is a rear view of fig. 3.

Fig. 6 is a bottom view of fig. 3.

Fig. 7 is a perspective view of the lower case.

Fig. 8 is a perspective view of the lower case from another perspective.

Fig. 9 is a top view of fig. 8.

FIG. 10 is a perspective view of a chamber cover.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the flange plate comprises a flange plate body 1, a second heat dissipation cavity 2, an extension part 3, a connecting part 4, a reinforcing rib 5, a first heat dissipation cavity 6, a boss 7, a protruding part 8, an upper box main body 11, a power input cavity 12, a heat dissipation cavity 13, a connecting end 14, an upper box connecting seat 15, a speed change cavity 16, a main shaft hole 17, an auxiliary shaft hole 18, a reverse gear hole 19, a first mounting hole 20, a lower box main body 21, a lower box connecting seat 22, a second mounting hole 23, a sleeve 24, a cylindrical reinforcing rib 25, a cavity 26, a shaft barrel 27, a cavity cover 28 and a cover closing surface 29.

The embodiments are substantially as shown in figures 1 to 10 of the accompanying drawings: a mini-tiller box body comprises a flange plate in figures 1-2, an upper box body in figures 3-6 and a lower box body in figures 7-9.

Referring to fig. 3 to 6, the upper box body includes an upper box body 11, a transmission cavity 16 and a power input cavity 12 are provided on the upper box body 11, the power input cavity 12 is communicated with the transmission cavity 16, a connection end 14 for connecting the flange shown in fig. 1 is provided on the upper box body 11, four connection lugs are provided on the connection end 14, and holes for connecting with the flange shown in fig. 1 are provided on the connection lugs. The opening of power input chamber 12 is located connecting end 14, still is equipped with heat dissipation chamber 13 on last case main part 11, and the opening of heat dissipation chamber 13 also is located connecting end 14, and heat dissipation chamber 13 is located the below of power input chamber 12, and the top in heat dissipation chamber 13 and the bottom in power input chamber 12 communicate. The power input chamber 12 is located between the shift chamber 16 and the connecting end 14, and the bottom of the upper case body 11 is provided with an upper case body connecting seat 15 for connecting with the lower case body. The upper box body in the embodiment is additionally provided with the heat dissipation cavity 13, so that the heat dissipation space is increased, heat dissipation is facilitated, the heat dissipation capacity of the upper box body is improved, and the service life of parts such as a transmission is prolonged.

In the prior art, the upper box body is not provided with the heat dissipation cavity 13, a certain distance is reserved between the position of the power input cavity 12 and the bottom of the box main body, therefore, an upper box body connecting seat 15 cannot be directly arranged on the position of the power input cavity 12, the connecting seat is far away from a connecting end 14, the gravity center of the upper box body is far away from the box body of the mini-tiller engine, and therefore, a farmer is more labor-consuming when operating the mini-tiller and the operation is inconvenient. And this scheme is through setting up heat dissipation chamber 13, make the position at power input chamber 12 place obtain the extension downwards, link 14 downwardly extending and make vertical height grow, set up the below at heat dissipation chamber 13 apart from 14 upper box connecting seats 15 far away of link on the bottom of upper box main part 11 before like this, upper box connecting seat 15 is nearer apart from link 14, thereby it is nearer to the distance of ploughing between the quick-witted engine box to make the focus of upper box to plough the machine a little, the peasant is more laborsaving when controlling the machine a little like this, it is more convenient to operate.

The material of the whole upper box body in this embodiment is aluminum alloy, and the upper box body made of aluminum alloy is lighter in weight. The whole upper box body is integrally formed.

Referring to fig. 6, the upper case connecting seat 15 is provided with four first mounting holes 20, and the first mounting holes 20 are arranged in a staggered manner. The staggered arrangement means that the four first mounting holes 20 are asymmetrically arranged, specifically, the distances from the two first mounting holes 20 on the upper side and the two first mounting holes 20 on the lower side to the horizontal center line of the upper box connecting seat 15 in fig. 6 are different, or the distances from the two first mounting holes 20 on the left side and the two first mounting holes 20 on the right side to the vertical center line of the upper box connecting seat 15 are different.

As shown in fig. 5, the upper case body 11 of the present embodiment is provided with a main shaft hole 17 for mounting a main shaft, a sub shaft hole 18 for mounting a sub shaft, and a reverse gear hole 19 for mounting a reverse gear. The mini-tiller on the existing market is not provided with a reverse gear, and in the scheme, the reverse gear hole 19 is formed in the upper box body, so that the reverse gear can be installed, the mini-tiller has a reverse function, and the mini-tiller is convenient to operate.

Referring to fig. 7-9, the lower case includes a lower case main body 21, and the entire lower case is made of aluminum alloy. Integrated into one piece is equipped with down box connecting seat 22 on the top of lower box main part 21, is equipped with a plurality of second mounting holes 23 on the lower box connecting seat 22, and the quantity of second mounting hole 23 in this embodiment is four, and a plurality of second mounting holes 23 dislocation set, dislocation set mean a plurality of second mounting holes 23 do not set up about the central symmetry of lower box connecting seat 22 on box connecting seat 22 down, and specific dislocation set is in this embodiment: in fig. 9, the distance between the two second mounting holes 23 on the upper side and the distance between the two second mounting holes 23 on the lower side to the horizontal center line of the lower box connecting seat 22 are different, or the distance between the two second mounting holes 23 on the left side and the distance between the two second mounting holes 23 on the right side to the vertical center line of the lower box connecting seat 22 are different. Because the second mounting hole 23 dislocation set on lower box connecting seat 22, first mounting hole 20 dislocation set on last box connecting seat 15, if box and last box assembly direction are incorrect down like this, then the second mounting hole 23 of lower box connecting seat 22 is not relative with the first mounting hole 20 of last box connecting seat 15, the bolt can not pass first mounting hole 20 of last box connecting seat 15 and the second mounting hole 23 of lower box connecting seat 22, thereby the emergence of the case of making mistakes of last box and lower box assembly direction has been avoided, make last box and lower box assembly direction never make mistakes.

Referring to fig. 8, a sleeve 24 is coaxially fixed on the top of the lower case connecting seat 22, and the sleeve 24 can be inserted into the shaft hole of the upper case connecting seat 15, so that the fit between the lower case connecting seat 22 and the upper case connecting seat 15 is better.

As shown in fig. 7 and 8, in the present embodiment, a plurality of vertically distributed cylindrical reinforcing ribs 25 are integrally formed on two side surfaces of the lower box main body 21, a plurality of reinforcing bars connected to the cylindrical reinforcing ribs 25 are further integrally formed on the lower box main body 21, and the reinforcing bars and the cylindrical reinforcing ribs 25 are connected to form an R shape, so that the reinforcing effect is better and the appearance is more attractive.

The bottom end of the lower box main body 21 is integrally connected with a cavity 26, and the side surface of the cavity 26 is integrally provided with a convex shaft barrel 27. The side surface of the cavity 26 far away from the shaft cylinder 27 is a covering surface 29, the covering surface 29 of the cavity 26 is detachably connected with a cavity cover 28 shown in fig. 10, and the specific detachable connection mode is as follows: the cavity 26 is provided with a plurality of connecting lugs which are uniformly distributed on the circumference, and the cavity cover 28 is also provided with a plurality of connecting lugs which are uniformly distributed on the circumference; through holes are formed in the connecting lugs of the cavity cover 28 and the cavity body 26, and bolts simultaneously penetrate through the through holes in the connecting lugs of the cavity cover 28 and the cavity body 26, so that the cavity body 26 and the cavity cover 28 are connected.

Referring to fig. 1-2, the flange plate comprises a flange plate body 1, wherein four connecting portions 4 are arranged on the edge of the flange plate body 1, the connecting portions 4 are connecting lugs, and connecting holes are formed in the connecting portions 4, so that the connecting ends of the upper box body of the mini-tiller can be conveniently connected through bolts.

Be equipped with first circular shape heat dissipation chamber 6 on the ring flange body 1, fixedly connected with annular boss 7 in the first heat dissipation chamber 6, two sides of ring flange body 1 are link up at the both ends of boss 7, and annular boss 7 and first heat dissipation chamber 6 concentric setting. The flange body 1 is provided with an extension portion 3, and the extension portion 3 extends towards the side far away from the first heat dissipation cavity 6, so that the shape of the whole flange body 1 is similar to a rectangle. The extension part 3 is arranged for covering a heat dissipation cavity additionally arranged on the mini-tiller upper box body, the extension part 3 enables the area of the flange plate to be increased, and the flange plate can be covered on the mini-tiller upper box body additionally provided with the heat dissipation cavity and large in size.

The extension part 3 is provided with a second heat dissipation cavity 2, and the first heat dissipation cavity 6 is communicated with the second heat dissipation cavity 2. Like this, first heat dissipation chamber 6 and second heat dissipation chamber 2 dispel the heat simultaneously, compare current ring flange, and the obvious grow in space in heat dissipation chamber has improved the heat-sinking capability of ring flange, is favorable to improving the life of the derailleur of ploughing the internal portion of box a little.

In addition, a plurality of reinforcing ribs 5 are uniformly and fixedly arranged between the inner wall of the first heat dissipation cavity 6 and the outer wall of the boss 7, the number of the reinforcing ribs 5 is 6-10, and preferably eight in the embodiment. The reinforcing ribs 5 are evenly distributed around the circumference of the boss 7. The arrangement of the reinforcing ribs 5 strengthens the structure of the whole flange plate, so that the flange plate is not easy to deform and damage, and the service life is prolonged. Meanwhile, the reinforcing ribs 5 are equivalent to radiating fins and can also play a role in radiating. The thickness of the reinforcing ribs 5 in this embodiment is 1 to 3mm, preferably 2 mm. The length of the reinforcing ribs 5 in the radial direction of the first heat dissipation chamber 6 is 19-21mm, preferably 20 mm. The depth of the reinforcing ribs 5 in the depth direction of the first heat dissipation chamber 6 is 21-23mm, preferably 22 mm. Above-mentioned parameter so sets up, and the heat dissipation of strengthening rib 5, strengthen the effect better. In addition, the whole flange plate in the embodiment is formed by integrally molding (can be die-cast, poured or forged) aluminum alloy, the structural stability of the flange plate is further ensured, and meanwhile, the flange plate is made of aluminum alloy and is light in weight.

Referring to fig. 2, an annular protrusion 8 is fixedly disposed on a side surface of the flange body 1 away from the first heat dissipation cavity 6, and the protrusion 8 and the boss 7 are coaxially disposed. The arrangement of the convex part 8 reduces the distance between the flange plate body 1 and the box body of the engine on the mini-tiller, and the flange plate is convenient to be connected with the box body of the engine on the mini-tiller. First heat dissipation chamber 6 extends to on the bulge 8, compares like this and does not set up bulge 8, the degree of depth grow of first heat dissipation chamber 6 to make first heat dissipation chamber 6 space grow, further improved radiating effect.

The above description is only an example of the present invention, and the detailed technical solutions and/or characteristics known in the solutions are not described too much here. It should be noted that, for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims (10)

1. A mini-tiller box body comprises a flange plate, an upper box body and a lower box body, wherein an upper box body connecting seat is arranged at the bottom of the upper box body, a lower box body connecting seat is arranged at the bottom of the lower box body, and the upper box body connecting seat and the lower box body connecting seat are detachably connected; go up the box and include the case main part, upward be equipped with speed change chamber and power input chamber in the case main part, upward be equipped with the link that is used for the flange dish in the case main part, the opening in power input chamber is located the link, its characterized in that: the upper box main body is further provided with a heat dissipation cavity, an opening of the heat dissipation cavity is located on the connecting end, and the heat dissipation cavity is communicated with the power input cavity.

2. The micro-cultivator box body of claim 1, wherein: the heat dissipation cavity is located below the power input cavity, the power input cavity is located between the speed change cavity and the connecting end, and the upper box body connecting seat is located below the power input cavity.

3. The micro-cultivator box body of claim 1, wherein: the upper box body connecting seat is provided with a plurality of first mounting holes, the lower box body connecting seat is provided with a plurality of second mounting holes, the first mounting holes are arranged on the upper box body connecting seat in a staggered mode, and the second mounting holes are arranged on the lower box body connecting seat in a staggered mode.

4. The micro-cultivator box body of claim 1, wherein: the upper box main body is provided with a main shaft hole, an auxiliary shaft hole and a reverse blocking hole.

5. The micro-cultivator box body of claim 1, wherein: the lower box body comprises a lower box main body, a plurality of reinforcing ribs are arranged on the side face of the lower box main body, and the reinforcing ribs are cylindrical.

6. The micro-cultivator box body of claim 1, wherein: the flange plate comprises a flange plate body, a plurality of connecting lugs are arranged on the edge of the flange plate body, a first circular heat dissipation cavity is formed in the flange plate body, an annular boss is fixedly connected in the first heat dissipation cavity, the two ends of the boss are communicated, an extension portion is arranged on the flange plate body, a second heat dissipation cavity is formed in the extension portion, and the first heat dissipation cavity is communicated with the second heat dissipation cavity.

7. The micro-cultivator box body of claim 6, wherein: a plurality of reinforcing ribs are arranged between the inner wall of the first heat dissipation cavity and the outer wall of the boss.

8. The micro-cultivator box body of claim 7, wherein: the thickness of the reinforcing rib is 1-3mm, the length of the reinforcing rib is 19-21mm, and the depth of the reinforcing rib is 21-23 mm.

9. The micro-cultivator box body of claim 6, wherein: the flange plate body is fixedly provided with an annular protruding portion on the side face deviating from the first heat dissipation cavity, and the protruding portion and the boss are coaxially arranged.

10. The micro-cultivator box of claim 9, wherein: the first heat dissipation cavity extends to the projection.

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