Conveyor shell

Abstract

The shell is an octahedral frame inner shell with an inner cavity, the bottom, the outer side wall and a back plate of the inner shell are all of a closed structure, and the upper portion, the inner side wall and the front face of the inner shell are of an open hollow structure; the end, connected with the line body profile, of the inner shell is an inner side wall, and the opposite end is an outer side wall. The inner side wall is further provided with a horizontal extending table protruding in the direction of the line body profile. Three-position fixing points are arranged in the shell, and universal notches are formed in the butt joint positions of the line body profiles and the shell, so that the shell is suitable for chains of different specifications of different line body profiles and is also suitable for a driving end driving module and a driven end module of a conveyor, and universality is high; the shell can be used as a driving end of one chain and can also be used as a driven end of the other chain; when the conveyor shell is produced, a plurality of mirror-symmetrical inner shells can be copied and can be mounted at will; batch production of the shells is achieved, rapid assembly of the conveyor is achieved, and the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to a conveyor structure, in particular to a conveyor shell, and belongs to the technical field of standardized pallet conveying systems based on standard aluminum profiles. Background Art

[0002] In the standardized pallet conveyor system industry, the overall structure of a linear conveyor consists of a driving module at one end, a driven module at the other end, and a line assembly connected between the driving module and the driven module. The line profile in the line assembly passes through the housing of the driving module and the housing of the driven module through the upper outbound chain and the lower return chain respectively. The upper outbound chain in the line profile runs above the housing of the driving module and the housing of the driven module, while the return chain needs to pass through the side wall notches of the housing of the driven module and the housing of the driving module.

[0003] However, according to the working requirements of the conveyor, different conveyors need to match different wire profiles, and the replacement of different wire profiles requires matching chains of different specifications. For chains of different multiples, the diameters of the chain gears are different, so the settings for the positions of the slots on the side wall of the housing for different chains cannot meet compatibility; If a single-number chain and a 2.5-number chain are taken as examples, the height of the slot on the side wall of the shell is designed based on the standard height for the gears of the single-number chain (with a relatively small diameter), and the gears of the 2.5-number chain (with a relatively large diameter) cannot pass through the slot; therefore, the problem is that the replacement of the wire profile and the chain requires the setting of a corresponding shell, which cannot meet the universal requirements. Summary of the invention

[0004] In view of the defects of the above-mentioned prior art, the purpose of the present invention is to provide a conveyor shell, which adopts three-position fixed points in the shell and sets a universal groove at the joint between the linear profile and the shell, so that the shell is suitable for chains of different specifications with different linear profiles, and is also suitable for the driving end drive module and the driven end module of the conveyor, and has strong versatility.

[0005] Taking the example of realizing the above-mentioned purpose, the technical scheme adopted by the present invention is: a conveyor shell, the shell is a square octahedral frame inner shell with an internal cavity, the bottom, outer wall and back plate of the inner shell are all closed structures, and the upper part, inner wall and front of the inner shell are open hollow structures; the end of the inner shell connected with the wire body profile is the inner wall, and the opposite end is the outer wall; the inner wall is also provided with a horizontal extension platform protruding in the direction of the wire body profile, and the back plate is formed with a vertical extension portion in the direction of the wire body profile and corresponds to the position of the horizontal extension platform; the end of the wire body profile is mounted on the horizontal extension platform of the inner shell and the side surface of one side of the wire body profile corresponds to the vertical extension portion of the back plate; Furthermore, a notch A is provided upwardly on the inner side wall of the inner shell at the same height as the horizontal extension platform, the notch A is communicated with the inner cavity of the inner shell, and the top surface of the notch A is provided with a lower groove structure; a notch B is also provided downwardly on the inner side wall of the inner shell at the height of the horizontal extension platform, the notch B is communicated with the inner cavity of the inner shell; Furthermore, a base is provided on the back plate corresponding to the notch B at the lower part of the horizontal extension platform and extending toward the front direction of the inner shell; Furthermore, the front of the inner shell is a hollow frame, and bolt stops are arranged around the frame. The bolt stops are covered with the outer guard plate unit outside the front of the inner shell by bolts, so as to form an internal accommodating cavity of the shell with the back plate; Furthermore, three wheel axle fixing points are arranged in the internal accommodating cavity of the shell, namely, a return wheel axle fixing point, a tension wheel axle fixing point and a driving / driven wheel axle fixing point; the return wheel axle fixing point is close to the notch A position of the inner side wall of the inner shell above the horizontal extension platform, the tension wheel axle fixing point is below the return wheel axle fixing point, and the driving / driven wheel axle fixing point is close to the outer side wall direction of the inner shell; Furthermore, the chain in the line body profile is respectively an upper chain and a lower chain according to the outward direction and the return direction; the chain comprises a chain body connected in series with a plurality of gears, a heavy-load friction strip is arranged below the upper chain body, the upper chain together with the heavy-load friction strip below it is passed through the upper top surface of the notch A above the horizontal extension platform of the inner shell side wall, and is fitted in the lower groove of the upper top surface of the notch through the friction block; a return friction strip is arranged below the lower chain body, and return friction strip stops are also arranged at both ends of the return friction strip, and the lower chain passes through the notch and passes through the return wheel shaft fixed point position; Furthermore, a group of circular connection holes are horizontally arranged on the vertical extension portion formed by the back plate in the direction of the linear profile, and a group of waist-shaped connection holes are respectively arranged below the circular connection holes; Furthermore, the height setting of the notch above the horizontal extension platform of the inner shell side wall meets the diameters of different chain gears and adopts a universal notch height to prevent the return friction bar stopper under the chain from colliding with the lower edge of the notch A when a large chain gear diameter is used; that is, the universal notch height setting is suitable for both single-number chains and 2.5-multiple chains.

[0006] Furthermore, the inner shell structure described above is applicable to both the conveyor drive module and the driven end module; however, the inner shell structure of the drive module and the inner shell structure of the driven module on the same chain are mirror-imaged.

[0007] When the housing is used in the drive module, it is necessary to replace the outer guard plate unit and add a tensioning structure; When the shell is in the structure of the driving module, it includes: an inner shell, an outer guard plate unit and a tensioning structure; a return wheel is arranged on the return wheel shaft in the inner shell accommodating cavity, and a driving sprocket is arranged on the driving shaft; the tensioning structure includes: a first tensioning wheel, a second tensioning wheel, and a first tensioning wheel is arranged at a fixed point of the tensioning wheel shaft through a bearing, a connecting hole is opened on the base of the back plate, a tensioner screw is connected in the connecting hole, the outside of the tensioner screw is connected to the tensioning wheel bracket, a tensioner wheel shaft is passed through the tensioning wheel bracket, and the tensioner wheel shaft is connected to the second tensioning wheel; In the tensioning structure, the first tensioning wheel is located in the inner shell, and part of the tensioning structure passes through the notch B on the inner side wall of the inner shell downward and is arranged in the tensioning shell outside the inner shell; the tensioning shell includes a tensioner inner guard plate, a tensioner bracket and a tensioner outer guard plate, and the tensioning shell and the inner shell are fixed by screws; The outer guard plate unit includes: a motor mounting plate and a protective sub-side plate; the motor mounting plate and the protective sub-side plate are provided with mounting holes matching the bolt stops corresponding to the front side of the inner shell; when in use, the motor mounting plate and the protective sub-side plate are installed side by side on the inner shell by screws.

[0008] The two tensioning wheels mentioned above are both whole circle structures, not semi-circular forms. The purpose of this design is that the chain tension of heavy-duty equipment is large, which causes serious wear on the slider, so rolling is used instead of sliding friction to increase the service life. At the same time, it improves mechanical efficiency. The bending radius of this tensioning form is larger, and the circular wheel design is adopted, which will improve mechanical efficiency and reduce resistance.

[0009] The chain travel process in the above-mentioned drive module is that the return chain enters from the slot A above the horizontal extension platform on the inner side wall of the inner shell, and respectively goes around the return wheel, the second tensioning wheel, the first tensioning wheel and the driving sprocket; after going around the driving sprocket, it leaves the inner shell from the upper part of the inner shell.

[0010] Screw holes are also added on the front end surface of the tension wheel shaft fixing point and the outer side wall of the inner shell at the same height as the tension wheel shaft fixing point.

[0011] When the housing driven module is used, the setting of the tensioning structure is removed and the outer guard plate unit matched therewith is replaced; When the shell is in the structure of the driven module, it includes: an inner shell and an outer guard plate unit; a return wheel is set on the return wheel shaft in the inner shell accommodating cavity, and a driven idler wheel is set on the driven shaft; the slot B below the horizontal extension platform of the inner side wall of the inner shell is blocked by the driven side sealing plate.

[0012] The outer guard plate unit includes: a protective side plate, the area of ​​the protective side plate is the same as the area of ​​the front side of the inner shell; the protective side plate is provided with a mounting hole matching the bolt stop corresponding to the front side of the inner shell; when in use, the protective side plate is installed on the inner shell by screws.

[0013] The chain travel process in the above-mentioned driven module is that the outgoing chain enters from the lower groove position on the top surface of the slot A above the horizontal extension platform on the inner side wall of the inner shell, first bypasses the top of the driven idler wheel, then goes back from the bottom of the driven idler wheel and travels from the top of the return wheel and passes through the slot A on the horizontal extension platform on the inner side wall of the inner shell.

[0014] The upper part of the inner shell of the present invention is also provided with a U-shaped upper cover plate, which is connected to the upper part of the inner shell by screws; guide strips are provided on the upper part of the profiles.

[0015] The beneficial effects of the present invention are: By adopting three-position fixed points in the shell and setting a universal notch at the joint between the line profile and the shell, the shell is suitable for chains of different specifications with different line profiles, and is also suitable for the drive module and the driven end module of the conveyor, with strong versatility; the shell can be used as the drive end of one chain, and can also be used as the driven end of another chain; when producing the conveyor shell, multiple sets of mirror-symmetrical inner shells can be copied and installed arbitrarily; mass production of the shell is realized, rapid assembly of the conveyor is realized, and production efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the conveyor housing of the present invention.

[0017] Figure 2 For Figure 1 Mirror image of the conveyor housing structure.

[0018] Figure 3 for Figure 1 The housing is suitable for the structural diagram in the conveyor drive module (first chain specification).

[0019] Figure 4 for Figure 3 Enlarged view of point A.

[0020] Figure 5 for Figure 2 The housing is suitable for the structural diagram in the conveyor driven module (first chain specification).

[0021] Figure 6 for Figure 5 Another view of the .

[0022] Figure 7 for Figure 3 The structural diagram of the outer shield unit is installed in the structure of the drive module.

[0023] Figure 8 for Figure 4 The structural diagram of the outer guard plate unit is installed in the structure of the driven module.

[0024] Fig. 9 for Figure 1 The housing is suitable for the structural diagram in the conveyor drive module (second chain specification).

[0025] Fig.10 for Figure 2 The housing is suitable for the structural diagram in the conveyor driven module (second chain specification).

[0026] In the figure, 1, bottom of inner shell, 2, outer side wall, 3, back plate, 4, horizontal extension platform, 5, vertical extension part, 6, notch A, 7, lower groove, 8, notch B, 9, base, 10, bolt stop, 11, return wheel shaft fixing point, 12, tensioning wheel shaft fixing point, 13, driving / driven wheel shaft fixing point, 14, heavy-duty friction strip, 15, friction block, 16, return friction strip, 17, return friction strip stopper, 18, circular connection hole, 19, waist-shaped connecting hole, 20, return wheel, 21, driving sprocket, 22, first tensioning wheel, 23, second tensioning wheel, 24, connecting hole, 25, tensioning wheel bracket, 26, tensioner wheel shaft, 27, tensioner inner guard plate, 28, tensioner bracket, 29, tensioner outer guard plate, 30, motor mounting plate, 31, protective sub-side plate, 32, screw hole, 33, driven idler wheel, 34, driven side sealing plate, 35, protective side plate. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0028] Example 1 like Figure 1 The conveyor shell shown in or 2, the shell is a square octahedral frame inner shell with an internal cavity, the bottom 1, outer side wall 2 and back plate 3 of the inner shell are all closed structures, and the upper part, inner side wall and front of the inner shell are open hollow structures; the end of the inner shell connected to the wire body profile is the inner side wall, and the opposite end is the outer side wall 2; the inner side wall is also provided with a horizontal extension platform 4 protruding in the direction of the wire body profile, and the back plate is formed with a vertical extension part 5 in the direction of the wire body profile and corresponds to the position of the horizontal extension platform 4; the end of the wire body profile is mounted on the horizontal extension platform 4 of the inner shell and one side of the wire body profile corresponds to the vertical extension part 5 of the back plate 3; A notch A6 is provided on the inner side wall of the inner shell at the same height as the horizontal extension platform 4 in an upward direction, and the notch A6 is communicated with the internal cavity of the inner shell, and the top surface of the notch A6 is provided with a lower groove 7 structure; a notch B8 is also provided on the inner side wall of the inner shell at the height of the horizontal extension platform 4 in a downward direction, and the notch B8 is communicated with the internal cavity of the inner shell; A base 9 is provided on the back plate 3 corresponding to the notch B8 at the bottom of the horizontal extension platform 4 and extending toward the front direction of the inner shell; The front of the inner shell is a hollow frame, and bolt stops 10 are arranged around the frame. The bolt stops 10 are covered with the outer guard plate unit outside the front of the inner shell by bolts, so as to form an internal accommodating cavity of the shell with the back plate 3; Three wheel axle fixing points are arranged in the internal accommodating cavity of the shell, namely, a return wheel axle fixing point 11, a tension wheel axle fixing point 12 and a driving / driven wheel axle fixing point 13; the return wheel axle fixing point 11 is close to the notch A6 position of the inner side wall of the inner shell above the horizontal extension platform 4, the tension wheel axle fixing point 12 is below the return wheel axle fixing point 11, and the driving / driven wheel axle fixing point 13 is close to the outer side wall 2 of the inner shell; The chain in the line body profile is respectively an upper chain and a lower chain according to the outward direction and the return direction; the chain includes a chain body with a plurality of gears connected in series, a heavy-duty friction strip 14 is arranged below the upper chain body, the upper chain together with the heavy-duty friction strip 14 below it is passed through the upper top surface of the notch A6 above the horizontal extension platform 4 of the inner shell side wall, and is matched in the lower groove 7 of the upper top surface of the notch A6 through the friction block 15; a return friction strip 16 is arranged below the lower chain body, and return friction strip stoppers 17 are also arranged at both ends of the return friction strip 16, and the lower chain passes through the notch A6 and passes through the return wheel shaft fixing point 11; A group of circular connection holes 18 are arranged horizontally on the vertical extension part 5 formed by the back plate 3 in the direction of the wire body profile, and a group of waist-shaped connection holes 19 are arranged correspondingly below the circular connection holes 18; the purpose of this design is to facilitate the connection between the wire body profile and the vertical extension part 5 when the conveyor replaces different types of wire body profiles due to different height positions; The height setting of the notch A6 above the horizontal extension platform 4 of the inner shell side wall meets the diameters of different chain gears and adopts a universal notch height; to prevent the return friction bar stopper 17 under the chain from colliding with the lower edge of the notch A6 when the large chain gear diameter is adopted; that is, the universal notch height setting is applicable to both single-number chains and 2.5-number chains. It should be noted that when the above chain is replaced, the wheels on each axle in the internal accommodating cavity of the profile and the shell are replaced accordingly; like Figure 3 , 4The inner shell shown in , 5, 6, 7, and 8 is applicable to a structural style of a conveyor model (the first chain specification), the chain specification is a single-number chain, the chain is a 12BS chain, the chain gear diameter in this structure is relatively small, and the stopper 17 on the return friction strip 16 under the lower chain has a certain height from the lower surface of the notch A6; Figure 9-10 The inner shell shown is applicable to the structural style of another conveyor model (the second chain specification, which is a 2.5-fold chain, and the chain is BS25-C212A). The chain gears in this structure are relatively large, and the stopper 17 on the return friction strip 16 under the lower chain is close to the lower surface of the slot A6, but does not conflict with the lower surface of the slot A6, so the inner shell of this scheme has a universal slot design.

[0029] The inner shell structure described above is applicable to both the conveyor drive module and the driven end module; however, the inner shell structure of the drive module and the inner shell structure of the driven module on the same chain are arranged in a mirror image.

[0030] Example 2 On the basis of the housing structure of Example 1, when the housing is used in the driving module, it is necessary to replace the outer guard plate unit and add a tensioning structure; like Figure 3 , 4 , when the shell is in the structure of the driving module, it includes: an inner shell, an outer guard plate unit and a tensioning structure; a return wheel 20 is arranged on the return wheel shaft in the inner shell accommodating cavity, and a driving sprocket 21 is arranged on the driving shaft; the tensioning structure includes: a first tensioning wheel 22, a second tensioning wheel 23, and a first tensioning wheel 22 is arranged at the position of the tensioning wheel shaft fixing point 11 through a bearing, a connecting hole 24 is opened on the base of the back plate 3, a tensioner screw is connected in the connecting hole 24, the outside of the tensioner screw is connected to the tensioning wheel bracket 25, a tensioner wheel shaft 26 is passed through the tensioning wheel bracket 25, and the tensioner wheel shaft 26 is connected to the second tensioning wheel 23; In the tensioning structure, the first tensioning wheel 22 is located in the inner shell, and part of the tensioning structure passes through the notch B8 of the inner side wall of the inner shell downward and is arranged in the tensioning shell outside the inner shell; the tensioning shell includes a tensioner inner guard plate 27, a tensioner bracket 28 and a tensioner outer guard plate 29, and the tensioning shell and the inner shell are fixed by screws; like Figure 7 The outer guard plate unit includes: a motor mounting plate 30 and a protective sub-side plate 31; the motor mounting plate 30 and the protective sub-side plate 31 are provided with mounting holes matching the bolt stop 10 corresponding to the front side of the inner shell; when in use, the motor mounting plate 30 and the protective sub-side plate 31 are installed side by side on the inner shell by screws.

[0031] The chain travel process in the above-mentioned drive module is that the return chain enters from the slot A6 above the horizontal extension platform 4 on the inner side wall of the inner shell, and respectively goes around the return wheel 20, the second tensioning wheel 23, the first tensioning wheel 22 and the driving sprocket 21; after going around the driving sprocket 21, it leaves the inner shell from the upper part of the inner shell.

[0032] A screw hole 32 is also added on the front end surface of the tension wheel shaft fixing point 12 and the outer wall 2 of the inner shell at the same height as the tension wheel shaft fixing point 12, the purpose of which is to strengthen the strength of the external motor mounting plate 30 and make it have a large bearing capacity; at the same time, in order to strengthen the strength of the tension wheel shaft fixing point 12 position, the tension wheel shaft is stronger; In the above scheme, the second tensioning wheel 23 is supported by an external tensioning wheel bracket 25; the difference from the prior art is that both tensioning wheels are of a whole circle structure, not a semicircular form; the purpose of this design is that the chain tension of heavy-duty equipment is large, and the wear of the slider is serious, so rolling is used instead of sliding friction to increase the service life; at the same time, the mechanical efficiency is improved. The bending radius of this tensioning form is larger, and the design form of a circular wheel is adopted, the mechanical efficiency will be improved, and the resistance will be reduced.

[0033] Example 3 On the basis of the housing structure of Example 1, when the housing driven module is used, the tensioning structure is removed and the outer guard plate unit matched therewith is replaced; like Figure 5 , 6 When the shell is in the structure of the driven module, it includes: an inner shell and an outer guard plate unit; a return wheel 20 is set on the return wheel shaft in the inner shell accommodating cavity, and a driven idler wheel 33 is set on the driven shaft; the slot B8 below the horizontal extension platform 4 on the inner side wall of the inner shell is blocked by the driven side sealing plate 34.

[0034] like Figure 8 The outer guard plate unit includes: a protective side plate 35, the area of ​​the protective side plate 35 is the same as the area of ​​the front of the inner shell; the protective side plate 35 is provided with a mounting hole matching the bolt stop 10 corresponding to the front of the inner shell; when in use, the protective side plate 35 is installed on the inner shell by screws.

[0035] The chain travel process in the above-mentioned driven module is that the outbound chain enters from the lower groove 7 on the top surface of the slot A6 above the horizontal extension platform 4 on the inner side wall of the inner shell, first bypasses the top of the driven idler wheel 33, then goes back from the bottom of the driven idler wheel 33 and travels from the top of the return wheel 20 and passes through the slot A6 on the horizontal extension platform 4 on the inner side wall of the inner shell.

[0036] It should be noted that, in the accommodating cavity of the inner shell of the driven module, no tensioning wheel is installed at the position of the tensioning wheel shaft fixing point 12 , and no tensioning structure needs to be installed in the connecting hole 24 of the base 9 on the back plate 3 .

[0037] It should be noted that the parts not described in detail in the present invention are prior art.

[0038] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0040] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0042] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0043] The above examples are only the best embodiments of the present invention. Obviously, the present invention is not limited to the above embodiments, and many variations are possible. All variations that can be directly derived or associated with the contents disclosed by a person skilled in the art should be considered as the protection scope of the present invention.

Claims

1. Conveyor housing, characterized in that: The shell is a square octahedral frame inner shell with an internal cavity, the bottom, outer wall and back plate of the inner shell are all closed structures, and the upper part, inner wall and front of the inner shell are open hollow structures; the end of the inner shell connected to the linear profile is the inner wall, and the opposite end is the outer wall; the inner wall is also provided with a horizontal extension platform protruding in the direction of the linear profile, and the back plate is formed with a vertical extension portion in the direction of the linear profile and corresponds to the position of the horizontal extension platform; the end of the linear profile is mounted on the horizontal extension platform of the inner shell and one side of the linear profile corresponds to the vertical extension portion of the back plate.

2. The conveyor housing according to claim 1, characterized in that: A slot A is provided upward on the inner wall of the inner shell at the same height as the horizontal extension platform, and the slot A is connected to the internal cavity of the inner shell. The top surface of the slot A is set as a lower groove structure; a slot B is also provided downward on the inner wall of the inner shell at the height of the horizontal extension platform, and the slot B is connected to the internal cavity of the inner shell.

3. The conveyor housing according to claim 2, characterized in that: A base is provided on the back plate corresponding to the notch B at the lower part of the horizontal extension platform and extending toward the front direction of the inner shell.

4. The conveyor housing according to claim 1, characterized in that: The front of the inner shell is a hollow frame, and bolt stops are arranged around the frame. The bolt stops are covered with the outer guard plate unit outside the front of the inner shell by bolts, so as to form an internal accommodating cavity of the shell with the back plate.

5. The conveyor housing according to claim 4, characterized in that: Three wheel axle fixing points are set in the internal accommodating cavity of the shell, namely the return wheel axle fixing point, the tensioning wheel axle fixing point and the driving / driven wheel axle fixing point; the return wheel axle fixing point is close to the slot A position on the inner wall of the inner shell above the horizontal extension platform, the tensioning wheel axle fixing point is below the return wheel axle fixing point, and the driving / driven wheel axle fixing point is close to the outer wall direction of the inner shell.

6. The conveyor housing according to claim 1, characterized in that: The chains in the line profile are respectively an upper chain and a lower chain according to the outward and return directions; the chain comprises a chain body with a number of gears connected in series, a heavy-loaded friction strip is arranged below the upper chain body, the upper chain together with the heavy-loaded friction strip below it are passed through the upper top surface of the slot A above the horizontal extension platform of the inner shell side wall, and are engaged in the lower groove of the upper top surface of the slot A through a friction block; a return friction strip is arranged below the lower chain body, and return friction strip stops are also arranged at both ends of the return friction strip, and the lower chain passes through the slot A and passes through the fixed point of the return wheel axle.

7. The conveyor housing according to claim 2, characterized in that: The height of the notch above the horizontal extension platform of the inner shell side wall is set to meet the diameters of different chain gears, and a universal notch height is adopted.

8. The conveyor housing according to claim 1, characterized in that: A group of circular connection holes are horizontally arranged on the vertical extension portion formed by the back plate in the direction of the linear profile, and a group of waist-shaped connection holes are correspondingly arranged below the circular connection holes.

9. The conveyor housing according to claim 2, characterized in that: When the housing is used in the drive module of the conveyor, it is necessary to match the outer guard plate unit and add a tensioning structure; Its specific structure includes: an inner shell, an outer guard plate unit and a tensioning structure; a return wheel is arranged on the return wheel shaft in the inner shell accommodating cavity, and a driving sprocket is arranged on the driving shaft; the tensioning structure includes: a first tensioning wheel, a second tensioning wheel, and a first tensioning wheel is arranged at a fixed point of the tensioning wheel shaft through a bearing, a connecting hole is opened on the base of the back plate, a tensioner screw is connected in the connecting hole, the outside of the tensioner screw is connected to the tensioning wheel bracket, a tensioner wheel shaft is passed through the tensioning wheel bracket, and the tensioner wheel shaft is connected to the second tensioning wheel; In the tensioning structure, the first tensioning wheel is located in the inner shell, and part of the tensioning structure passes through the notch B on the inner side wall of the inner shell downward and is arranged in the tensioning shell outside the inner shell; the tensioning shell includes a tensioner inner guard plate, a tensioner bracket and a tensioner outer guard plate, and the tensioning shell and the inner shell are fixed by screws; The outer guard plate unit includes: a motor mounting plate and a protective sub-side plate; the motor mounting plate and the protective sub-side plate are provided with mounting holes matching the bolt stops corresponding to the front of the inner shell; the motor mounting plate and the protective sub-side plate are installed side by side on the inner shell by screws; the two tensioning wheels of the tensioning structure are both full circular structures.

10. The conveyor housing according to claim 2, characterized in that: When the housing is used in the driven module of the conveyor, an outer guard plate unit is required; the structure of the housing in the driven module includes: an inner housing and an outer guard plate unit; a return wheel is arranged on the return wheel shaft in the accommodating cavity of the inner housing, and a driven idler wheel is arranged on the driven shaft; the slot B below the horizontal extension platform of the inner side wall of the inner housing is blocked by a driven side sealing plate; The outer guard plate unit includes: a protective side plate, the area of ​​the protective side plate is the same as the area of ​​the front side of the inner shell; the protective side plate is provided with a mounting hole matching the bolt stop corresponding to the front side of the inner shell; the protective side plate is mounted on the inner shell by screws.

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