Conveyor shell

Abstract

The utility model relates to a conveyor shell which 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] This utility model relates to conveyor structure, specifically to a conveyor housing, belonging to the technical field of standardized pallet conveying systems built on the basis of standard aluminum profiles. Background Technology

[0002] In the standardized pallet conveyor system industry, a linear conveyor system typically consists of a drive module at one end, a driven module at the other end, and a line assembly connecting the drive and driven modules. The line profile within the line assembly passes through the housings of the drive module and the driven module via an upper outgoing chain and a lower return chain, respectively. The upper outgoing chain of the line profile travels above both the drive and driven module housings, while the return chain passes through slots in the side walls of both the drive and driven module housings.

[0003] However, depending on the operating conditions of the conveyor, different conveyors require different conveyor profiles, and replacing different conveyor profiles requires matching chains of different specifications. For chains with different multipliers, the gear diameters are different, which means that the design cannot meet compatibility requirements for different chain positions passing through the slots in the side wall of the housing.

[0004] Taking single-number chains and 2.5-number chains as examples, the height of the slot on the side wall of the housing is designed with the gear (with a relatively small diameter) of the single-number chain passing through as the standard design height. Therefore, the gear (with a relatively large diameter) of the 2.5-number chain cannot pass through the slot. So, the problem is that the replacement of the line profile and chain requires the corresponding housing to be set up, which cannot meet the requirements of universality. Summary of the Invention

[0005] In view of the defects of the prior art, the purpose of this utility model is to provide a conveyor housing. By setting three fixed points inside the housing and setting a universal groove at the joint between the linear profile and the housing, the housing can be used for different specifications of chains of different linear profiles. It can also be used for the drive module and driven module of the conveyor drive end, with strong versatility.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a conveyor housing, wherein the housing is a square octagonal frame inner shell with an internal cavity, the bottom, outer side wall, and back plate of the inner shell are all closed structures, and the upper part, inner side wall, and front of the inner shell are open and hollow structures; one end of the inner shell that connects to the linear profile is the inner side wall, and the opposite end is the outer side wall; the inner side wall is also provided with a horizontal extension platform protruding towards the linear profile, and the back plate forms 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;

[0007] Furthermore, a slot A is provided on the inner wall of the inner shell at the same height as the horizontal extension platform, which is in the upward direction. The slot A is connected to the internal cavity of the inner shell, and the top surface of the slot A is set as a recessed groove structure. A slot B is also provided on the inner wall of the inner shell at the same height as the horizontal extension platform, which is in the downward direction. The slot B is connected to the internal cavity of the inner shell.

[0008] Furthermore, a base is provided on the back plate corresponding to the slot B at the lower part of the horizontal extension platform, extending towards the front of the inner shell;

[0009] Furthermore, the front of the inner shell is a hollowed-out frame, and bolt stops are provided around the frame. The bolt stops are fitted with the outer protective plate unit on the outside of the front of the inner shell by bolts, thereby forming an internal cavity of the shell with the back plate.

[0010] Furthermore, three wheel axle fixing points are provided in the internal accommodating cavity of the aforementioned housing: a return wheel axle fixing point, a tension wheel axle fixing point, and a drive / driven wheel axle fixing point. The return wheel axle fixing point is located near slot A on the inner wall of the inner housing above the horizontal extension platform. The tension wheel axle fixing point is located below the return wheel axle fixing point. The drive / driven wheel axle fixing point is located near the outer wall of the inner housing.

[0011] Furthermore, the chain in the linear profile is divided into an upper chain and a lower chain according to the outward and return directions. The chain includes a chain body with several gears connected in series. A heavy-duty friction strip is provided below the upper chain body. The upper chain, together with the heavy-duty friction strip below it, passes through the top surface of the slot A above the horizontal extension platform on the inner shell side wall and is fitted into the lower groove on the top surface of the slot by friction blocks. A return friction strip is provided below the lower chain body. The two ends of the return friction strip are also provided with return friction strip stops. The lower chain passes through the slot and passes through the fixed point of the return wheel axle.

[0012] Furthermore, a set of circular connecting holes is provided horizontally on the vertical extension of the back plate in the direction of the linear profile, and a set of waist-shaped connecting holes are respectively provided below the circular connecting holes.

[0013] Furthermore, the height of the slot above the horizontal extension platform on the inner shell sidewall is set to accommodate the diameters of different chain gears, and a universal slot height is adopted; this prevents the return friction strip stop below the chain from conflicting with the lower edge of slot A when using a large chain gear diameter; that is, the universal slot height setting is applicable to both single-number chains and 2.5-number chains.

[0014] Furthermore, the aforementioned inner shell structure is applicable to both the conveyor drive module and the driven end module; however, the inner shell structure of the drive module located on the same chain is mirrored with that of the driven module.

[0015] When the housing is used in the drive module, the outer protective plate unit needs to be replaced and a tensioning structure needs to be added;

[0016] The structure of the drive module includes: an inner shell, an outer protective plate unit, and a tensioning structure; a return wheel is installed on the return wheel shaft in the inner shell cavity, and a drive sprocket is installed on the drive shaft; the tensioning structure includes: a first tensioning wheel, a second tensioning wheel, and the first tensioning wheel is installed at the fixed point of the tensioning wheel shaft via 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 passes through the tensioning wheel bracket, and the second tensioning wheel is connected to the tensioner wheel shaft;

[0017] In the tensioning structure, the first tensioning wheel is located in the inner shell, and part of the tensioning structure passes through the slot B on the inner sidewall of the inner shell and is set in the tensioning shell outside the inner shell; the tensioning shell includes an inner tensioner plate, a tensioner bracket and an outer tensioner plate, and the tensioning shell and the inner shell are fixed together by screws.

[0018] The outer protective 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 that match the bolt stops corresponding to the front of the inner shell; in use, the motor mounting plate and the protective sub-side plate are installed side by side on the inner shell by screws.

[0019] Both of the aforementioned tensioning wheels are circular structures, not semi-circular. The purpose of this design is to replace sliding friction with rolling friction in heavy-duty equipment chains, which experience severe wear on the slider due to the high tension. This increases the service life. At the same time, it improves mechanical efficiency. The bending radius of this tensioning method is relatively large, and the use of a circular wheel design increases mechanical efficiency and reduces resistance.

[0020] The chain travel process in the aforementioned drive module is as follows: the return chain enters from slot A above the horizontal extension platform on the inner side wall of the inner shell, and sequentially winds around the return wheel, the second tension wheel, the first tension wheel, and the drive sprocket; after passing the drive sprocket, it leaves the inner shell from the upper part of the inner shell.

[0021] Screw holes are also added to the front surface of the aforementioned tension wheel shaft fixing point and the outer wall of the inner shell at the same height as the tension wheel shaft fixing point.

[0022] When using the housing driven module, the tensioning structure is removed and the matching outer protective plate unit is replaced.

[0023] The housing is in the driven module structure, including: inner shell, outer protective plate unit; a return wheel is set on the return wheel shaft in the inner shell cavity, and a driven idler wheel is set on the driven shaft; the slot B below the horizontal extension platform on the inner side wall of the inner shell is blocked by the driven side sealing plate.

[0024] The outer protective plate unit includes: a protective side plate, the area of ​​which is the same as the area of ​​the front of the inner shell; the protective side plate is provided with mounting holes that match the bolt stops corresponding to the front of the inner shell; in use, the protective side plate is installed on the inner shell by screws.

[0025] The chain travel process in the aforementioned driven module is as follows: the outgoing chain enters from the groove on the top surface of slot A above the horizontal extension platform on the inner side wall of the inner shell, first goes around the top of the driven idler wheel, then goes back from below the driven idler wheel and travels above the return wheel, and exits through slot A on the horizontal extension platform on the inner side wall of the inner shell.

[0026] The upper part of the inner shell of this design is also provided with a U-shaped top cover plate, which is connected to the upper part of the inner shell by screws; guide strips are provided on the top of the profiles.

[0027] The beneficial effects of the utility model are:

[0028] By employing three fixed points within the housing and a universal slot at the interface between the linear profile and the housing, the housing becomes suitable for chains of different specifications made of different linear profiles. It is also compatible with both the drive and driven modules of the conveyor, offering strong versatility. The housing can be used as the drive end of one chain or as the driven end of another. Multiple mirror-symmetrical inner housings can be replicated during the production of the conveyor housing, allowing for arbitrary installation. This enables mass production of the housing, facilitates rapid assembly of the conveyor, and improves production efficiency. Attached Figure Description

[0029] Figure 1 This is a structural diagram of the conveyor housing of this utility model.

[0030] Figure 2 For Figure 1 A diagram of the conveyor housing structure in a mirror configuration.

[0031] Figure 3 for Figure 1 The housing is suitable for the structural diagram in the conveyor drive module (first chain specification).

[0032] Figure 4 for Figure 3 Enlarged view of point A.

[0033] Figure 5 for Figure 2 The housing is suitable for the structural diagram in the driven module of the conveyor (first chain specification).

[0034] Figure 6 for Figure 5 Another view from this angle.

[0035] Figure 7 for Figure 3The diagram shows the structure of the outer protective plate unit installed in the drive module's housing.

[0036] Figure 8 for Figure 4 The structural diagram shows the housing of the driven module with the outer protective plate unit installed in it.

[0037] Figure 9 for Figure 1 The housing is suitable for the structural diagram in the conveyor drive module (second chain specification).

[0038] Figure 10 for Figure 2 The housing is suitable for the structural diagram in the driven module of the conveyor (second chain specification).

[0039] In the diagram, 1. Inner shell bottom, 2. Outer wall, 3. Back plate, 4. Horizontal extension platform, 5. Vertical extension, 6. Groove A, 7. Lower groove, 8. Groove B, 9. Base, 10. Bolt stop, 11. Return wheel axle fixing point, 12. Tensioning wheel axle fixing point, 13. Drive / driven wheel axle fixing point, 14. Heavy-duty friction strip, 15. Friction block, 16. Return friction strip, 17. Return friction strip stop, 18. Circular connection 19. Hole, waist-shaped connecting hole, 20. Return wheel, 21. Drive sprocket, 22. First tensioning wheel, 23. Second tensioning wheel, 24. Connecting hole, 25. Tensioning wheel bracket, 26. Tensioner wheel axle, 27. Tensioner inner guard plate, 28. Tensioner bracket, 29. Tensioner outer guard plate, 30. Motor mounting plate, 31. Protective secondary side plate, 32. Screw hole, 33. Driven idler wheel, 34. Driven side sealing plate, 35. Protective side plate. Detailed Implementation

[0040] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0041] Example 1

[0042] like Figure 1As shown in Figure 2, the conveyor housing is a square octagonal 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, while the upper part, inner side wall, and front of the inner shell are open and hollow structures. The end of the inner shell that connects to the linear 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 towards the linear profile. The back plate forms a vertical extension 5 in the direction of the linear profile and corresponds to the position of the horizontal extension platform 4. The end of the linear profile is mounted on the horizontal extension platform 4 of the inner shell, and one side of the linear profile corresponds to the vertical extension 5 of the back plate 3.

[0043] A slot A6 is provided on the inner side wall of the inner shell at the same height as the horizontal extension platform 4, and the slot A6 is connected to the internal cavity of the inner shell. The top surface of the slot A6 is set as a lower groove 7 structure. A slot B8 is also provided on the inner side wall of the inner shell at the same height as the horizontal extension platform 4, and the slot B8 is connected to the internal cavity of the inner shell.

[0044] The base 9 is provided on the back plate 3 extending towards the front of the inner shell in the slot B8 at the lower part of the horizontal extension platform 4.

[0045] The inner shell has a hollowed-out frame on the front side, and bolt stops 10 are provided around the frame. The bolt stops 10 are covered by bolts to the outer protective plate unit on the front side of the inner shell, thereby forming an internal cavity of the shell with the back plate 3.

[0046] The internal cavity of the aforementioned housing is provided with three wheel axle fixing points: return wheel axle fixing point 11, tension wheel axle fixing point 12, and drive / driven wheel axle fixing point 13. The return wheel axle fixing point 11 is located near the slot A6 on the inner wall of the inner housing above the horizontal extension platform 4. The tension wheel axle fixing point 12 is located below the return wheel axle fixing point 11. The drive / driven wheel axle fixing point 13 is located near the outer wall 2 of the inner housing.

[0047] The chain in the linear profile is divided into an upper chain and a lower chain according to the outward and return directions. The chain includes a chain body with several gears connected in series. A heavy-duty friction strip 14 is provided below the upper chain body. The upper chain and the heavy-duty friction strip 14 below it pass through the top surface of the slot A6 above the horizontal extension platform 4 on the inner shell side wall, and are engaged in the lower groove 7 on the top surface of the slot A6 by friction blocks 15. A return friction strip 16 is provided below the lower chain body. The two ends of the return friction strip 16 are also provided with return friction strip stops 17. The lower chain passes through the slot A6 and passes through the return wheel axle fixing point 11.

[0048] A set of circular connecting holes 18 are provided horizontally on the vertical extension 5 formed by the back plate 3 towards the linear profile direction. A set of waist-shaped connecting holes 19 are also provided below the circular connecting holes 18. The purpose of this design is to ensure the connection between the linear profile and the vertical extension 5 when the conveyor changes to different types of linear profiles due to different height positions.

[0049] The height of the slot A6 above the horizontal extension platform 4 on the inner shell sidewall is set to accommodate different chain gear diameters, adopting a universal slot height. This prevents the return friction strip stop 17 below the chain from interfering with the lower edge of the slot A6 when using a chain with a large gear diameter. In other words, the universal slot height setting is suitable for both single-number chains and 2.5-number chains. It should be noted that when replacing the chain, the wheels on each axle in the internal cavity of the profile and shell are also replaced accordingly.

[0050] like Figure 3 , 4 The inner shell shown in 5, 6, 7, and 8 is applicable to a structural style of a conveyor type (first chain specification). This chain specification is a single-number chain, and the chain is a 12BS chain. In this structure, the diameter of the chain gears is relatively small, and the stop 17 on the return friction strip 16 under the lower chain is at a certain height from the lower surface of the groove A6; as shown in 5, 6, 7, and 8, the inner shell is applicable to a structural style of a conveyor type (first chain specification). Figure 9-10 The inner shell shown is applicable to another type of conveyor (a second chain specification, which is a 2.5 multiple chain, and the chain is BS25-C212A). In this structure, the chain gears are relatively large, and the stop 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. Therefore, the inner shell of this solution has a universal slot design.

[0051] The aforementioned inner shell structure is applicable to both the conveyor drive module and the driven end module; however, the inner shell structure of the drive module located on the same chain is mirrored in the inner shell structure of the driven module.

[0052] Example 2

[0053] Based on the housing structure of Example 1, when the housing is used in the drive module, the outer protective plate unit needs to be replaced and a tensioning structure needs to be added;

[0054] like Figure 3 , 4The structure of the drive module includes: an inner shell, an outer protective plate unit, and a tensioning structure; a return wheel 20 is provided on the return wheel shaft in the inner shell cavity, and a drive sprocket 21 is provided on the drive shaft; the tensioning structure includes: a first tensioning wheel 22, a second tensioning wheel 23, and the first tensioning wheel 22 is provided at the tensioning wheel shaft fixing point 11 via a bearing; a connecting hole 24 is provided 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 tensioner wheel bracket 25, and the second tensioning wheel 23 is connected to the tensioner wheel shaft 26;

[0055] In the tensioning structure, the first tensioning wheel 22 is located in the inner shell, and part of the tensioning structure passes through the slot B8 on the inner sidewall of the inner shell and is set in the tensioning shell outside the inner shell; the tensioning shell includes the inner guard plate 27 of the tensioner, the tensioner bracket 28 and the outer guard plate 29 of the tensioner, and the tensioning shell is fixed to the inner shell by screws.

[0056] like Figure 7 The outer protective 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 that match the bolt stops 10 corresponding to the front of the inner shell; in use, the motor mounting plate 30 and the protective sub-side plate 31 are mounted side by side on the inner shell by screws.

[0057] The chain travel process in the aforementioned drive module is as follows: the return chain enters from the slot A6 above the horizontal extension platform 4 on the inner side wall of the inner shell, and sequentially winds around the return wheel 20, the second tension wheel 23, the first tension wheel 22 and the drive sprocket 21; after passing the drive sprocket 21, it leaves the inner shell from the upper part of the inner shell.

[0058] Screw holes 32 are added to the front surface of the aforementioned 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 is to strengthen the external motor mounting plate 30 and make it more resistant to loads; at the same time, in order to strengthen the position of the tension wheel shaft fixing point 12 and make the tension wheel shaft more robust.

[0059] 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 full circles, not semicircles. The purpose of this design is to replace sliding friction with rolling friction in heavy-duty equipment chains with large tension forces, which cause severe wear on the slider and increase service life. At the same time, it improves mechanical efficiency. The bending radius of this tensioning method is large. The use of a circular wheel design will improve mechanical efficiency and reduce resistance.

[0060] Example 3

[0061] Based on the housing structure of Embodiment 1, when the housing driven module is used, the tensioning structure is removed and the matching outer protective plate unit is replaced.

[0062] like Figure 5 , 6 The structure of the driven module includes: an inner shell and an outer protective plate unit; a return wheel 20 is provided on the return wheel shaft in the inner shell cavity, and a driven idler wheel 33 is provided 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.

[0063] like Figure 8 The outer protective plate unit includes: a protective side plate 35, the area of ​​which is the same as the area of ​​the front of the inner shell; the protective side plate 35 is provided with mounting holes that match the bolt stops 10 corresponding to the front of the inner shell; in use, the protective side plate 35 is installed on the inner shell by screws.

[0064] The chain travel process in the aforementioned driven module is as follows: the outgoing 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 goes around the top of the driven idler wheel 33, then goes back from below the driven idler wheel 33 and travels above the return wheel 20, and then passes through the slot A6 on the horizontal extension platform 4 on the inner side wall of the inner shell.

[0065] It should be noted that the tension wheel is not installed at the tension wheel shaft fixing point 12 in the inner shell of the driven module, and the tensioning structure does not need to be installed in the connection hole 24 of the base 9 on the back plate 3.

[0066] It should be noted that the parts of this utility model not described in detail are existing technologies.

[0067] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0068] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0069] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0070] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0071] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0072] The above-listed embodiments are merely preferred embodiments of this utility model. Obviously, this utility model is not limited to the above embodiments and many variations are possible. All variations that can be directly derived or conceived by those skilled in the art from the disclosure of this utility model should be considered within the protection scope of this utility model.

Claims

1. A conveyor housing, characterized in that: The shell is an octagonal frame inner shell with an internal cavity. The bottom, outer side wall, and back plate of the inner shell are closed structures, while the upper part, inner side wall, and front of the inner shell are open and hollow structures. The end of the inner shell that connects to the linear profile is the inner side wall, and the opposite end is the outer side wall. The inner side wall is also provided with a horizontal extension platform protruding towards the linear profile. The back plate forms a vertical extension portion in the direction of the linear profile, which 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 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 recessed structure. A slot B is also provided on the inner wall of the inner shell at the same height as the horizontal extension platform, and the slot B is connected to the internal cavity of the inner shell.

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

4. A conveyor housing according to claim 1, characterized in that: The inner shell has a hollowed-out frame on the front, and bolt stops are provided around the frame. The bolt stops are fitted with the outer protective plate unit on the front of the inner shell through bolts, thereby forming an internal cavity for the shell with the back plate.

5. A conveyor housing according to claim 4, characterized in that: The internal cavity of the housing has three wheel axle fixing points: a return wheel axle fixing point, a tension wheel axle fixing point, and a drive / driven wheel axle fixing point. The return wheel axle fixing point is located near slot A on the inner wall of the inner housing above the horizontal extension platform. The tension wheel axle fixing point is located below the return wheel axle fixing point. The drive / driven wheel axle fixing point is located near the outer wall of the inner housing.

6. A conveyor housing according to claim 1, characterized in that: The chain in the linear profile is divided into an upper chain and a lower chain according to the outward and return directions. The chain includes a chain body with several gears connected in series. A heavy-duty friction strip is set below the upper chain body. The upper chain, together with the heavy-duty friction strip below it, passes through the top surface of slot A above the horizontal extension platform on the inner shell side wall and is fitted into the lower groove on the top surface of slot A by friction blocks. A return friction strip is set below the lower chain body. The two ends of the return friction strip are also provided with return friction strip stops. The lower chain passes through slot A and passes through the fixed point of the return wheel axle.

7. A conveyor housing according to claim 2, characterized in that: The height of the slot above the horizontal extension platform on the inner shell sidewall is set to accommodate the diameters of different chain gears, and a universal slot height is adopted.

8. A conveyor housing according to claim 1, characterized in that: A set of circular connecting holes is provided horizontally on the vertical extension of the back plate towards the linear profile, and a set of waist-shaped connecting holes are provided below the circular connecting holes respectively.

9. A conveyor housing according to claim 2, characterized in that: When the housing is used in the drive module of the conveyor, an outer protective plate unit is required and a tensioning structure is added; Its specific structure includes: an inner shell, an outer protective plate unit, and a tensioning structure; a return wheel is installed on the return wheel shaft in the inner shell cavity, and a drive sprocket is installed on the drive shaft; the tensioning structure includes: a first tensioning wheel, a second tensioning wheel, and the first tensioning wheel is installed at the fixed point of the tensioning wheel shaft via 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 passes through the tensioning wheel bracket, and the second tensioning wheel is connected to the tensioner wheel shaft; In the tensioning structure, the first tensioning wheel is located in the inner shell, and part of the tensioning structure passes through the slot B on the inner sidewall of the inner shell and is set in the tensioning shell outside the inner shell; the tensioning shell includes an inner tensioner plate, a tensioner bracket and an outer tensioner plate, and the tensioning shell and the inner shell are fixed together by screws. The outer protective 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 that match the bolt stops corresponding to the front of the inner shell; in use, 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 circular structures.

10. A conveyor housing according to claim 2, characterized in that: When the housing is used in the driven module of the conveyor, an outer protective plate unit is required; the structure of the housing in the driven module includes: an inner housing and an outer protective plate unit; a return wheel is installed on the return wheel shaft in the inner housing cavity, and a driven idler wheel is installed on the driven shaft; the slot B below the horizontal extension platform on the inner side wall of the inner housing is sealed by the driven side sealing plate; The outer protective plate unit includes: a protective side plate, the area of ​​which is the same as the area of ​​the front of the inner shell; the protective side plate is provided with mounting holes that match the bolt stops corresponding to the front of the inner shell; in use, the protective side plate is installed on the inner shell by screws.

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