Light-load speed chain driving unit with tensioning structure

Abstract

The utility model discloses a light-load speed chain driving unit with a tensioning structure, which relates to the technical field of chain transportation and comprises two driving components and a die-casting shell, the driving assembly comprises driving chain wheels which are in transmission through a chain and are rotationally connected into the die-casting shells, the tops of the die-casting shells are open, a driving shaft is arranged between the two die-casting shells, the two ends of the driving shaft are fixedly connected with the two driving chain wheels respectively, one side of each die-casting shell is fixedly connected with a driving motor, and the other side of each die-casting shell is fixedly connected with the driving motor. An output shaft of the driving motor extends into the die-casting shell and is fixedly connected with the driving chain wheel, a tensioning structure used for tensioning the chain is arranged in the die-casting shell and comprises a tensioning block movably connected into the die-casting shell, and the tensioning block is arranged on the inner side of the chain and makes contact with the inner side wall of the chain. And by arranging the tensioning structure, the tensioning degree of the chain is guaranteed, and therefore the chain can move more stably.

Description

Technical Field

[0001] The utility model relates to a drive unit, and more particularly to a light-load speed-multiplying chain drive unit with a tensioning structure. Background Art

[0002] Existing double-speed chain conveyor drive units on the market are machined or made of sheet metal, resulting in poor operational stability and high production costs. Parts are easily damaged over time, and traceability after damage is poor, hindering standardized management. Secondly, traditional double-speed chains utilize mechanical tensioning at the tail end, which requires regular maintenance and high frequency.

[0003] Therefore, a new solution is needed to solve this problem Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a light-load double-speed chain drive unit with a tensioning structure.

[0005] The technical solution of the utility model is:

[0006] A light-load double-speed chain drive unit with a tensioning structure includes two drive components symmetrically arranged and a die-cast shell for installing the drive components, the drive component includes a driving sprocket that is rotatably connected to the die-cast shell through chain transmission, the top of the die-cast shell is open, and a drive shaft is provided between the two die-cast shells, the two ends of the drive shaft are respectively fixedly connected to the two driving sprockets, a drive motor is fixedly connected to one side of the die-cast shell, the output shaft of the drive motor extends into the die-cast shell and is fixedly connected to the driving sprocket, a tensioning structure for tensioning the chain is provided in the die-cast shell, the tensioning structure includes a tensioning block movably connected to the die-cast shell, the tensioning block is provided on the inner side of the chain and contacts the inner side wall of the chain.

[0007] The present invention is further configured such that the tensioning structure further includes an elastic member arranged on the inner side of the chain, and the elastic member has elastic deformation potential energy for driving the tensioning block to move toward the outer side of the chain.

[0008] The utility model is further configured such that the tensioning structure also includes a support rod fixedly connected to the die-cast shell and a guide sleeve sleeve mounted on the support rod, the guide sleeve is fixedly connected to the side of the tensioning block facing away from the chain, the elastic member is sleeved on the support rod, and one end of the elastic member extends through the support rod and is inserted into the guide sleeve.

[0009] The utility model is further configured such that one end of the tensioning block facing away from the guide sleeve is arranged in an arc shape and contacts the chain.

[0010] The utility model is further configured such that a reinforcing rib is fixedly connected between the two die-cast shells.

[0011] The utility model is further configured such that one side of the tensioning block is fixedly connected to a limiting rod, one end of the limiting rod extends toward the outside of the die-cast shell and passes through the die-cast shell, a strip hole for the limiting rod to pass through is provided on the driving inner plate, a gasket is sleeved on the limiting rod, the gasket is fit with the outer side wall of the die-cast shell, and the end of the limiting rod away from the tensioning block is bolted to a locking sleeve, and the locking sleeve is fit with the gasket.

[0012] The utility model is further configured as follows: a transition wheel is provided on the side of the die-cast shell close to the feeding end, the transition wheel is located outside the chain and extends out of the open part of the die-cast shell, one side of the driving sprocket is fixedly connected to a driving synchronous wheel, one end of the transition wheel is fixedly connected to a driven synchronous wheel, and the driving synchronous wheel and the driven synchronous wheel are connected by a synchronous belt transmission.

[0013] The utility model is further configured such that the top open portion of the die-cast shell is detachably connected to an upper cover plate, the top of the upper cover plate is fixedly connected to a guide plate, and the upper cover plate is provided with a first opening for the chain to pass through and a second opening for the transition wheel to pass through.

[0014] The beneficial technical effects of the utility model are:

[0015] By setting up a tensioning structure and using elastic parts to push the tensioning block to tension the chain, the chain transmission is made more stable, preventing the chain from loosening, causing poor engagement and vibration, and improving transmission efficiency;

[0016] By setting up a transition wheel, the feeding end can also transport materials, thereby achieving the transition power effect, compensating for the power loss of the bending part of the chain end, and making the transportation of materials more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 This is a structural diagram of the hidden side cover of the utility model;

[0019] Figure 3 It is an exploded view of the hidden side cover of the utility model;

[0020] Figure 4 This is a schematic structural diagram of the die-cast housing of the utility model;

[0021] Figure 5 It is an exploded view of the die-cast housing of the utility model;

[0022] In the figure, 1. driving inner plate; 11. side cover plate; 12. upper cover plate; 121. guide plate; 13. strip hole; 2. driving sprocket; 21. driving synchronous wheel; 22. driving shaft; 3. transition wheel; 31. driven synchronous wheel; 4. tensioning block; 41. elastic member; 42. support rod; 43. guide sleeve; 44. support block; 45. limiting rod; 451. gasket; 452. locking sleeve; 5. driving bearing block; 6. return transfer block; 7. driving motor; 8. reinforcing rib. DETAILED DESCRIPTION

[0023] In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the specific implementation methods of the present invention are further described in detail below in conjunction with the drawings and examples. The following examples are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0024] A light-load double-speed chain drive unit with a tensioning structure, such as Figure 1-Figure 5 As shown, it includes two drive components arranged symmetrically with each other and a die-cast shell for installing the drive components. The drive component includes a driving sprocket 2 that is connected to the die-cast shell through chain transmission and rotation. The top of the die-cast shell is open, and the chain extends out of the open part. The die-cast shell includes a driving inner plate 1 and a side cover plate 11 that are detachably connected to each other by bolts. A drive shaft 22 is provided between the two die-cast shells. The two ends of the drive shaft 22 are respectively fixedly connected to the two driving sprockets 2. A drive motor 7 is fixedly connected to one side of the die-cast shell. The output shaft of the drive motor 7 extends into the die-cast shell and is fixedly connected to the driving sprocket 2. A tensioning structure for tensioning the chain is provided in the die-cast shell. The tensioning structure is used to tension the chain, so that the chain transmission is more stable, the chain is prevented from loosening, and poor engagement and vibration occur, thereby improving the transmission efficiency.

[0025] The two die-cast shells are connected together by reinforcing ribs 8. The setting of the reinforcing ribs 8 can make the connection between the two die-cast shells more stable, ensuring the stability of the overall structure; the tensioning structure includes a tensioning block 4, an elastic member 41, a support rod 42 and a guide sleeve 43, which is movably connected to the tensioning block 4 in the die-cast shell. The tensioning block 4 is set on the inner side of the chain and contacts the inner side wall of the chain. A support block 44 is fixedly connected to the side of the driving inner plate 1 toward the side cover plate 11 and extends toward the inside of the chain. One end of the support rod 42 is fixedly connected to one side of the support block 44. The elastic member 41 adopts a spring and is sleeved on the outer peripheral wall of the support rod 42. A guide hole for inserting the support rod 42 is opened on the guide sleeve 43, and the aperture of the guide hole is larger than The outer diameter of the spring, one end of the spring extends out of the support rod 42 and is also inserted into the guide hole, and conflicts with the inner bottom wall of the guide hole. The end of the guide sleeve 43 away from the support rod 42 is fixedly connected to one side of the tensioning block 4, and the other side of the tensioning block 4 is set to an arc surface and contacts the inner side of the chain. The elastic part 41 has elastic deformation potential energy for driving the guide sleeve 43 away from the support rod 42, causing the tensioning block 4 to move away from the support rod 42 toward the outside of the chain, thereby squeezing the chain, changing the path and causing the chain to be tensioned; the setting of the support rod 42 and the guide sleeve 43 limits the moving trajectory of the tensioning block 4, avoids the tensioning block 4 from being skewed, and can also support the elastic part 41, avoid the elastic part 41 from bending, and affect the quality of the elastic part 41.

[0026] A transition wheel 3 is provided on one side of the die-casting shell near the feeding end, and the transition wheel 3 is rotatably connected to the side of the driving inner plate 1 facing the side cover plate 11, and the transition wheel 3 is located outside the chain and extends out of the open part of the die-casting shell, and ensures that the feeding surface at the top of the chain is tangent to the outer wall of the transition wheel 3. The top opening of the die-casting shell is fixedly connected to an upper cover plate 12, and the upper cover plate 12 is provided with a through-port 1 for the chain to pass through and a through-port 2 for the transition wheel 3 to pass through. A guide plate 121 is fixedly connected to the top of the upper cover plate 12, and the guide plates 121 on the tops of the two die-casting shells that are symmetrically arranged are also symmetrically arranged. An inclined guide surface is provided on one end of the guide plate 121 near the transition wheel 3; by setting The guide plate 121 is arranged to limit the transportation direction of the material, and through the guiding effect, the material can be transported more smoothly between the two guide plates 121; the driving sprocket 2 is fixedly connected to the side of the side cover plate 11 with a driving synchronous wheel 21, and the transition wheel 3 is fixedly connected to the end of the side cover plate 11 with a driven synchronous wheel 31. The driving synchronous wheel 21 and the driven synchronous wheel 31 are connected by a synchronous belt transmission. When the driving sprocket 2 rotates, the transition wheel 3 is driven to rotate at the same time. The transition wheel 3 can be used to transport the material at the feeding end, thereby achieving the transition power providing effect, making up for the power loss of the bending part of the chain end, and making the transportation of the material more stable.

[0027] The tensioning block 4 is fixedly connected to a limit rod 45 on one side of the driving inner plate 1. One end of the limit rod 45 extends toward the outside of the die-cast shell and passes through the die-cast shell. A strip hole 13 for the limit rod 45 to pass through is provided on the driving inner plate 1, and the limit rod 45 can also move. A gasket 451 is sleeved on the limit rod 45, and the gasket 451 fits the outer wall of the die-cast shell. The end of the limit rod 45 away from the tensioning block 4 is bolted to a locking sleeve 452, which is locked. The sleeve 452 fits with the gasket 451. When the locking sleeve 452 is locked, it can squeeze the gasket 451, so that the gasket 451 squeezes the side wall of the driving inner plate 1, so that the tensioning block 4 is fixed in the corresponding position. When the locking sleeve 452 is loosened, the limit rod 45 can be moved to drive the tensioning block 4 to move, compressing the elastic part 41. The tensioning block 4 is now away from the chain, making the chain loose, and the chain can be easily removed from the sprocket, which is convenient for replacement or maintenance.

[0028] A driving bearing block 5 is fixedly connected to the top of the support block 44 and contacts the inner side of the chain, which can support the chain and ensure the stability of the chain movement; a return transfer block 6 with an arc-shaped cross-section is also fixedly connected to the driving inner plate 1, which can bend and guide the chain, ensuring the stability of the chain return movement.

[0029] Working principle: Move the limit rod 45 to make the tensioning block 4 close to the support block 44. At this time, the elastic part 41 is deformed by the external force, and the locking sleeve 452 is tightened to fix the tensioning block 4 in the corresponding position. After the chain is installed, the locking sleeve 452 is loosened, and the elastic part 41 is not subject to external force. Through its own elasticity, it drives the tensioning block 4 away from the support rod 42 toward the outside of the chain, thereby squeezing the chain and tensioning the chain, making the chain transmission more stable, preventing the chain from loosening, poor engagement and vibration, and improving transmission efficiency.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A light-load double-speed chain drive unit with a tensioning structure, characterized by: The invention comprises two drive assemblies symmetrically arranged with respect to each other and a die-cast shell for mounting the drive assemblies, wherein the drive assembly comprises a driving sprocket (2) connected to the die-cast shell by chain transmission and rotation, the top of the die-cast shell is open, a drive shaft (22) is provided between the two die-cast shells, the two ends of the drive shaft (22) are respectively fixedly connected to the two driving sprockets (2), a drive motor (7) is fixedly connected to one side of the die-cast shell, the output shaft of the drive motor (7) extends into the die-cast shell and is fixedly connected to the driving sprocket (2), a tensioning structure for tensioning the chain is provided in the die-cast shell, the tensioning structure comprises a tensioning block (4) movably connected to the die-cast shell, the tensioning block (4) is provided on the inner side of the chain and contacts the inner side wall of the chain.

2. The light-load double-speed chain drive unit with a tensioning structure according to claim 1, characterized in that: The tensioning structure further comprises an elastic member (41) arranged on the inner side of the chain, wherein the elastic member (41) has elastic deformation potential energy for driving the tensioning block (4) to move toward the outer side of the chain.

3. The light-load double-speed chain drive unit with a tensioning structure according to claim 2, characterized in that: The tensioning structure also includes a support rod (42) fixedly connected to the die-cast shell and a guide sleeve (43) sleeved on the support rod (42), wherein the guide sleeve (43) is fixedly connected to the side of the tensioning block (4) facing away from the chain, and the elastic member (41) is sleeved on the support rod (42), and one end of the elastic member (41) extends through the support rod (42) and is inserted into the guide sleeve (43).

4. The light-load double-speed chain drive unit with a tensioning structure according to claim 3, characterized in that: The end of the tensioning block (4) facing away from the guide sleeve (43) is arranged in an arc shape and contacts the chain.

5. The light-load double-speed chain drive unit with a tensioning structure according to claim 1, characterized in that: A reinforcing rib (8) is fixedly connected between the two die-cast shells.

6. The light-load double-speed chain drive unit with a tensioning structure according to claim 1, characterized in that: A limiting rod (45) is fixedly connected to one side of the tensioning block (4), one end of the limiting rod (45) extends toward the outside of the die-cast shell and passes through the die-cast shell, a strip hole (13) is provided on the die-cast shell for the limiting rod (45) to pass through, a gasket (451) is sleeved on the limiting rod (45), and the gasket (451) is in contact with the outer wall of the die-cast shell, and a locking sleeve (452) is bolted to one end of the limiting rod (45) away from the tensioning block (4), and the locking sleeve (452) is in contact with the gasket (451).

7. The light-load double-speed chain drive unit with a tensioning structure according to claim 1, characterized in that: A transition wheel (3) is provided on one side of the die-casting shell near the feeding end. The transition wheel (3) is located outside the chain and extends out of the open part of the die-casting shell. One side of the driving sprocket (2) is fixedly connected to a driving synchronous wheel (21). One end of the transition wheel (3) is fixedly connected to a driven synchronous wheel (31). The driving synchronous wheel (21) and the driven synchronous wheel (31) are connected through a synchronous belt transmission.

8. The light-load double-speed chain drive unit with a tensioning structure according to claim 7, characterized in that: The top open portion of the die-cast shell is detachably connected to an upper cover plate (12), the top of the upper cover plate (12) is fixedly connected to a guide plate (121), and the upper cover plate (12) is provided with a first opening for the chain to pass through and a second opening for the transition wheel (3) to pass through.

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