Double-machine transmission mechanism with inner sleeve shaft and outer sleeve shaft

Abstract

The utility model discloses an inner and outer sleeve shaft double-machine transmission mechanism which comprises an outer sleeve shaft, a core shaft, a first sleeve, a second sleeve, a driven wheel, a first power source, a driving wheel, a third sleeve, a second power source and a transmission short shaft, the core shaft is sleeved with the outer sleeve shaft, the first sleeve is fixedly sleeved at the rear end of the outer sleeve shaft, one end of the second sleeve is fixed with the first sleeve, and the other end of the second sleeve is fixed with the driving wheel. The output shaft of the first power source is provided with a driving wheel, the driving wheel and the driven wheel are connected through a belt or a chain, the output shaft of the second power source is fixedly sleeved with a third sleeve, and the rear end of a transmission short shaft is fixedly connected with the front end of the third sleeve. And the front end of the transmission short shaft is fixedly connected with the rear end of the mandrel. Two power sources are adopted to drive the outer sleeve shaft and the core shaft to rotate respectively, double-machine transmission of the outer sleeve shaft and the core shaft is achieved, the outer sleeve shaft and the core shaft independently operate and do not interfere with each other, and a double-machine transmission mechanism is provided for the spiral feeding machine with the scattering function.

Description

Technical Field

[0001] This utility model relates to the field of spiral feeder technology, specifically to a dual-machine transmission mechanism with inner and outer shafts. Background Technology

[0002] Screw conveyors are widely used in industrial production, using an electric motor to drive a screw shaft to continuously transport materials. Most common feeders on the market employ either shaftless or single-shaft screw designs. Shaftless screw conveyors use shaftless screw blades to move materials forward within the feeding cylinder, effectively preventing material entanglement and making them suitable for transporting sticky or granular materials. Single-shaft screw conveyors have a rotating shaft; by optimizing the angle of the screw blades along the shaft, conveying efficiency can be effectively improved. However, when conveying highly adhesive lumpy or paste-like materials (such as chemical raw materials and high-viscosity food slurries), these shaftless or single-shaft screw conveyors lack the ability to break up or have insufficient breaking up capabilities. Incompletely broken-up sticky materials directly enter downstream equipment (such as reaction vessels and mixing devices), easily causing localized accumulation and uneven mixing, increasing the burden on downstream processes.

[0003] To address this issue, a screw feeder with a dispersing function is proposed. It employs an outer shaft sleeved with an inner shaft, with the outer shaft performing screw conveying and the inner shaft having a dispersing mechanism at its front end. This screw feeder requires dual-shaft drive, necessitating the development of a dual-shaft drive mechanism. Utility Model Content

[0004] Therefore, this utility model provides an inner and outer shaft dual-machine transmission mechanism to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A dual-motor transmission mechanism with inner and outer shafts includes an outer shaft, a spindle, a first sleeve, a second sleeve, a driven wheel, a first power source, a driving wheel, a third sleeve, a second power source, and a short transmission shaft. The outer shaft is sleeved outside the spindle. The first sleeve is fixedly sleeved on the rear end of the outer shaft. One end of the second sleeve is fixed to the first sleeve, and the other end extends rearward. The driven wheel is fixedly sleeved on the rear end of the second sleeve. The output shaft of the first power source is provided with the driving wheel. The driving wheel and the driven wheel are connected by a belt or chain. The third sleeve is fixedly sleeved on the output shaft of the second power source. The rear end of the short transmission shaft is fixedly connected to the front end of the third sleeve, and the front end of the short transmission shaft is fixedly connected to the rear end of the spindle.

[0007] Furthermore, the first sleeve includes a first sleeve portion and a first flange portion that protrudes radially outward from the middle section of the first sleeve portion. The front end of the first sleeve portion is sleeved on the rear end of the outer sleeve shaft and fixed by welding after being positioned by a locating pin. The front end of the second sleeve is sleeved on the rear end of the first sleeve portion, and the front end face of the second sleeve abuts against the first flange portion and is connected by bolts.

[0008] Furthermore, the inner and outer sleeve dual-machine transmission mechanism also includes a first bearing seat fixed to the platform plate, and the front end of the second sleeve is rotatably fixed in the first bearing seat through a bearing.

[0009] Furthermore, the transmission short shaft passes through the second sleeve, and at least two sets of bearings are provided between the transmission short shaft and the second sleeve.

[0010] Furthermore, the inner and outer sleeve dual-machine transmission mechanism also includes a second bearing seat fixed to the platform plate, and the third sleeve is rotatably fixed in the second bearing seat by a bearing.

[0011] Furthermore, the rear end of the second sleeve is fixed with a first positioning end cap by bolts.

[0012] Furthermore, the central hole of the third sleeve is a two-stage stepped hole with a larger front and a smaller rear. The front end of the output shaft of the second power source is fixed with a second positioning end cap by bolts. The second positioning end cap is located in the larger hole of the two-stage stepped hole.

[0013] Furthermore, the third sleeve includes a third sleeve portion and a third flange portion that protrudes radially outward from the middle section of the third sleeve portion. The rear end of the transmission short shaft is provided with a circular groove. The rear end of the transmission short shaft is sleeved on the front end of the third sleeve portion, and the rear end face of the transmission short shaft abuts against the third flange portion and is connected by bolts.

[0014] Furthermore, the first power source includes a first motor and a first speed reducer that is driven by the first motor.

[0015] Furthermore, the second power source includes a second motor and a second speed reducer that is drively connected to the second motor.

[0016] This utility model has the following advantages:

[0017] This utility model provides a dual-machine transmission mechanism for inner and outer shafts, which uses two power sources to drive the outer shaft and the spindle to rotate respectively. Specifically, the first power source drives the second sleeve to rotate via a belt or chain, the second sleeve drives the first sleeve connected to it to rotate, the first sleeve drives the outer shaft connected to it to rotate, the second power source drives the third sleeve to rotate, the third sleeve drives the short transmission shaft connected to it to rotate, and the short transmission shaft drives the spindle connected to it to rotate. In this way, dual-machine transmission of the outer shaft and the spindle is realized, and the outer shaft and the spindle operate independently without interfering with each other, providing a dual-machine transmission mechanism for a screw feeder with a dispersing function.

[0018] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of this application will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0019] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0020] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0021] Figure 1 A schematic diagram of the structure of an inner and outer shaft dual-machine transmission mechanism provided in an embodiment of this utility model;

[0022] Figure 2 for Figure 1 A magnified view of A in the middle.

[0023] In the diagram: 1. Outer sleeve; 2. Mandrel; 3. First sleeve; 4. Second sleeve; 5. Driven wheel; 6. First motor; 7. First reducer; 8. Drive wheel; 9. Third sleeve; 10. Second motor; 11. Second reducer; 12. Transmission short shaft; 13. First bearing housing; 14. Second bearing housing; 15. First positioning end cover; 16. Second positioning end cover; 17. Limit sleeve; 18. Platform plate. Detailed Implementation

[0024] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] This embodiment provides an inner and outer shaft dual-machine transmission mechanism, which is the transmission part of a screw feeder with a dispersing function, aiming to realize the independent operation of the two shafts of the screw feeder with a dispersing function. However, the screw feeder with the dispersing function is not the subject of this application, therefore its structure will not be described in detail here.

[0026] like Figure 1 and 2 As shown, the inner and outer sleeve dual-machine transmission mechanism provided in this embodiment includes an outer sleeve shaft 1, a spindle 2, a first sleeve 3, a second sleeve 4, a driven wheel 5, a first power source, a driving wheel 8, a third sleeve 9, a second power source, and a transmission short shaft 12.

[0027] The outer sleeve shaft 1 is fitted outside the core shaft 2, and the two rotate independently. Spiral blades are provided outside the outer sleeve shaft 1 to form a spiral conveying shaft, which passes through the feeding cylinder. This part is the conveying part of the screw feeder, and other details will not be repeated.

[0028] The first sleeve 3 is fixedly sleeved on the rear end of the outer sleeve shaft 1. Specifically, the first sleeve 3 includes a first sleeve 3 part and a first flange part that protrudes radially outward from the middle section of the first sleeve 3 part. The front end of the first sleeve 3 part is sleeved on the rear end of the outer sleeve shaft 1 and fixed by welding after being positioned by a locating pin.

[0029] One end of the second sleeve 4 is fixed to the first sleeve 3, and the other end extends a certain distance to allow the second sleeve 4 to install a bearing and a driven wheel 5. The driven wheel 5 is sleeved on the rear end of the second sleeve 4, and the two are connected by a key to transmit circumferential load. Specifically, the front end of the second sleeve 4 is sleeved on the rear end of the first sleeve 3, and the front end face of the second sleeve 4 abuts against the first flange and is connected by bolts. The outer periphery of the second sleeve 4 is divided into a journal, a shoulder, and a head from front to back. The journal is used to install a bearing, and the head is used to install the driven wheel 5. The rear end of the second sleeve 4 is fixed with a first positioning end cover 15 by bolts. The outer diameter of the first positioning end cover 15 is larger than the outer diameter of the head of the second sleeve 4, thereby using the first positioning end cover 15 and the shoulder to restrict the axial movement of the driven wheel 5. The bearing at the journal is limited on one side by the shoulder and on the other side by a limiting step in the bearing housing.

[0030] The output shaft of the first power source is equipped with a drive wheel 8, which is connected to the driven wheel 5 via a belt or chain. Belt drive is generally used, requiring no lubrication and providing smooth operation with low noise. Specifically, the first power source includes a first motor 6 and a first reducer 7 connected to the first motor 6. The drive wheel 8 is mounted on the output shaft of the first reducer 7.

[0031] The third sleeve 9 is fitted onto the output shaft of the second power source, and the two are connected by a key to transmit circumferential loads. Specifically, the second power source includes a second motor 10 and a second reducer 11 that is driven by the second motor 10; the center hole of the third sleeve 9 is a two-stage stepped hole with a larger diameter at the front and a smaller diameter at the back. The inner diameter of the smaller hole of the two-stage stepped hole is adapted to the output shaft of the second reducer 11. The front end of the output shaft of the second reducer 11 is fixed with a second positioning end cover 16 by bolts. The second positioning end cover 16 is located in the larger hole of the two-stage stepped hole, and the outer diameter of the second positioning end cover 16 is between the diameter of the larger hole and the diameter of the smaller hole of the two-stage stepped hole. In this way, the third sleeve 9 can be effectively prevented from falling off the output shaft of the second reducer 11.

[0032] The rear end of the transmission short shaft 12 is fixedly connected to the front end of the third sleeve 9. The transmission short shaft 12 passes through the cavity of the second sleeve 4, and its front end is fixedly connected to the rear end of the spindle 2. Specifically, the third sleeve 9 includes a third sleeve 9 section and a third flange section that protrudes radially outward from the middle section of the third sleeve 9 section. The rear end of the transmission short shaft 12 is provided with a circular groove. The rear end of the transmission short shaft 12 is sleeved on the front end of the third sleeve 9 section, and the rear end face of the transmission short shaft 12 abuts against the third flange section and is connected by bolts. At least two sets of bearings are provided between the transmission short shaft 12 and the second sleeve 4. For example, the inner diameters of the inner rings of the two sets of bearings are equal, but the outer diameters are different (i.e., the two sets of bearings have different specifications). The outer diameter of the bearing in front is smaller. A shoulder is provided on the transmission short shaft 12, and a limiting sleeve 17 is fitted on it. 7 is located between the two bearings and the two ends of the limiting sleeve 17 abut against the inner ring ends of the two bearings respectively. The inner part of the second sleeve 4 is provided with four stepped holes that increase in size from back to front. The first and third holes from back to front are used to install the two bearings. The steps between the holes limit the bearings. The bearing on the rear side is limited by the first positioning end cover 15. The front end of the transmission short shaft 12 is provided with a positioning head. The spindle 2 is a hollow shaft or has a positioning center hole at the rear end. The diameter of the positioning head is adapted to the inner diameter of the hollow shaft or the positioning center hole. The positioning head is inserted into the rear end of the spindle 2 for positioning. Then the transmission short shaft 12 is welded and fixed to the spindle 2.

[0033] The entire set of equipment is installed on the platform plate 18, that is, the feeding cylinder, the first power source, and the second power source are all installed on the platform plate 18. The platform plate 18 is also equipped with a first bearing seat 13 and a second fixed seat. The front end of the second sleeve 4 is rotatably fixed in the first bearing seat 13 through a bearing, and the third sleeve 9 is rotatably fixed in the second bearing seat 14 through a bearing.

[0034] The inner and outer sleeve shaft dual-machine transmission mechanism provided in this embodiment uses two power sources to drive the outer sleeve shaft 1 and the spindle 2 to rotate respectively. Specifically, the first power source drives the second sleeve 4 to rotate via a belt or chain. The second sleeve 4 drives the first sleeve 3 connected to it to rotate. The first sleeve 3 drives the outer sleeve shaft 1 connected to it to rotate. The second power source drives the third sleeve 9 to rotate. The third sleeve 9 drives the transmission short shaft 12 connected to it to rotate. The transmission short shaft 12 drives the spindle 2 connected to it to rotate. In this way, the dual-machine transmission of the outer sleeve shaft 1 and the spindle 2 is realized. The outer sleeve shaft 1 and the spindle 2 can operate independently without interfering with each other, providing a dual-machine transmission mechanism for a screw feeder with a dispersing function.

[0035] Although the present invention has been described in detail above with general descriptions and specific embodiments, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A double drive mechanism for an in-out sleeve shaft, characterized by, The assembly includes an outer sleeve (1), a spindle (2), a first sleeve (3), a second sleeve (4), a driven wheel (5), a first power source, a driving wheel (8), a third sleeve (9), a second power source, and a transmission short shaft (12). The outer sleeve (1) is sleeved outside the spindle (2). The first sleeve (3) is fixedly sleeved at the rear end of the outer sleeve (1). One end of the second sleeve (4) is fixed to the first sleeve (3), and the other end extends backward. The driven wheel (5) is fixedly sleeved at the rear end of the second sleeve (4). The output shaft of the first power source is provided with the driving wheel (8). The driving wheel (8) and the driven wheel (5) are connected by a belt or chain. The third sleeve (9) is fixedly sleeved on the output shaft of the second power source. The rear end of the transmission short shaft (12) is fixedly connected to the front end of the third sleeve (9), and the front end of the transmission short shaft (12) is fixedly connected to the rear end of the spindle (2).

2. The inner and outer shaft dual-motor transmission mechanism according to claim 1, characterized in that, The first sleeve (3) includes a first sleeve (3) part and a first flange part that protrudes radially outward from the middle section of the first sleeve (3) part. The front end of the first sleeve (3) part is sleeved on the rear end of the outer sleeve shaft (1) and fixed by welding after being positioned by a positioning pin. The front end of the second sleeve (4) is sleeved on the rear end of the first sleeve (3) part, and the front end face of the second sleeve (4) abuts against the first flange part and is connected by bolts.

3. The inner and outer shaft dual-motor transmission mechanism according to claim 1, characterized in that, The inner and outer sleeve dual-machine transmission mechanism also includes a first bearing seat (13) fixed on the platform plate (18), and the front end of the second sleeve (4) is rotatably fixed in the first bearing seat (13) by a bearing.

4. The inner and outer shaft dual-motor transmission mechanism according to claim 1, characterized in that, The transmission short shaft (12) passes through the second sleeve (4), and at least two sets of bearings are provided between the transmission short shaft (12) and the second sleeve (4).

5. The double drive mechanism of a bushing and a sleeve shaft according to claim 1, wherein The inner and outer shaft dual-machine transmission mechanism also includes a second bearing seat (14) fixed on the platform plate (18), and the third sleeve (9) is rotatably fixed in the second bearing seat (14) by bearing.

6. The double drive mechanism of a bushing and a sleeve shaft according to claim 1, wherein The rear end of the second sleeve (4) is fixed with a first positioning end cap (15) by bolts.

7. The inner and outer shaft dual-motor transmission mechanism according to claim 1, characterized in that, The center hole of the third sleeve (9) is a two-stage stepped hole with a larger front and a smaller rear. The front end of the output shaft of the second power source is fixed with a second positioning end cap (16) by bolts. The second positioning end cap (16) is located in the larger hole of the two-stage stepped hole.

8. The inner and outer shaft dual-motor transmission mechanism according to claim 1, characterized in that, The third sleeve (9) includes a third sleeve (9) part and a third flange part that protrudes radially outward from the middle section of the third sleeve (9) part. The rear end of the transmission short shaft (12) is provided with a circular groove. The rear end of the transmission short shaft (12) is sleeved on the front end of the third sleeve (9) part, and the rear end face of the transmission short shaft (12) abuts against the third flange part and is connected by bolts.

9. The double drive mechanism of a bushing and a sleeve shaft according to claim 1, wherein The first power source includes a first motor (6) and a first reducer (7) that is connected to the first motor (6) in a transmission.

10. The double drive mechanism of a bushing and a sleeve shaft according to claim 1, wherein The second power source includes a second motor (10) and a second reducer (11) that is connected to the second motor (10) for transmission.

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