Driving device of large roller

Abstract

The utility model discloses a large roller driving device which comprises a power driving source and a power transmission mechanism, and the power transmission mechanism is in transmission connection between the power driving source and a roller so as to transmit torque of the power driving source to the roller. The power transmission mechanism comprises a box body, a transmission shaft rotationally arranged in the box body, a first tooth-shaped chain wheel, a second tooth-shaped chain wheel and a chain combined with the first tooth-shaped chain wheel and the second tooth-shaped chain wheel. The box body comprises a first end face and a second end face which are oppositely arranged. The power driving source is installed on the side where the first end face is located. One end part of the transmission shaft extends out of the first end surface and is connected with a power driving source; the first tooth-shaped chain wheel coaxially sleeves the transmission shaft and synchronously rotates along with the transmission shaft; the axis of the second tooth-shaped chain wheel is parallel to the axis of the first tooth-shaped chain wheel and can be coaxially connected with the roller. The ratio of the tooth number of the first tooth-shaped chain wheel to the tooth number of the second tooth-shaped chain wheel is 1: 2, and the transmission shaft can be close to and away from the second tooth-shaped chain wheel in the first direction.

Description

Technical Field

[0001] The present application relates to the technical field of roller drive equipment, and in particular to a driving device for a large roller. Background Art

[0002] A reducer is connected between the roller and the drive motor, and the power of the drive motor is converted according to the speed ratio through the reducer and transmitted to the roller, thereby reducing the speed and increasing the output torque. In the drive of large rollers, in order to drive large rollers with large mass, the reducer has a complex structure and high cost. Summary of the invention

[0003] In order to solve the above technical problems, the purpose of this application is to provide a driving device for a large roller.

[0004] To achieve the above-mentioned purpose, the present application adopts the following technical solution: a driving device for a large roller, comprising a power driving source and a power transmission mechanism, wherein the power transmission mechanism is transmission-connected between the power driving source and the roller to transmit the torque of the power driving source to the roller, and the power transmission mechanism comprises:

[0005] The box body comprises a first end face and a second end face which are arranged opposite to each other, and the power driving source is installed on the side where the first end face is located;

[0006] A transmission shaft is rotatably mounted in the housing around its own axis, one end of the transmission shaft extends from the first end surface and is connected to the power driving source, and the transmission shaft is perpendicular to the first end surface and the second end surface;

[0007] A first toothed sprocket is coaxially sleeved on the transmission shaft, and the first toothed sprocket is configured to rotate synchronously with the transmission shaft;

[0008] A second toothed sprocket is rotatably mounted in the housing about its own axis, the axis of the second toothed sprocket is parallel to the axis of the first toothed sprocket, and the second toothed sprocket is configured to be coaxially connected to the roller; and

[0009] a chain, combined with the first toothed sprocket and the second toothed sprocket;

[0010] Among them, the ratio of the number of teeth of the first toothed sprocket to the number of teeth of the second toothed sprocket is 1:2, and the transmission shaft is configured to be able to approach and move away from the second toothed sprocket along a first direction, and the first direction is perpendicular to the axial direction of the transmission shaft.

[0011] In the above technical solution, further preferably, a notch is respectively formed in the first end face and the second end face, and a pair of the notches are arranged opposite to each other along the axial direction of the transmission shaft. A sliding bearing seat is arranged at the notch of the second end face, and at least one first bearing is installed in the sliding bearing seat. The first bearing is coaxially sleeved on the transmission shaft, and the sliding bearing seat is configured to be arranged on the box body so as to move back and forth along the first direction.

[0012] In the above technical solution, further preferably, a connecting flange is arranged at the notch of the first end face. The connecting flange is connected between the box body and the power driving source and allows the transmission shaft to pass through to the power driving source, and the connecting flange is configured to be arranged on the box body so as to move back and forth along the first direction.

[0013] In the above technical solution, further preferably, at least a pair of guide bars are arranged at each of the notches. Each of the guide bars extends along the first direction. The sliding bearing seat is in sliding fit with the guide bars at the second end face, and the connecting flange is in sliding fit with the guide bars at the first end face.

[0014] In the above technical solution, further preferably, a bushing is rotatably arranged in the box body. The second toothed sprocket, the bushing and the roller are coaxially arranged from outside to inside. The bushing is connected between the second toothed sprocket and the roller to enable the roller to rotate synchronously with the second toothed sprocket.

[0015] In the above technical solution, further preferably, a mounting hole is respectively formed in the first end face and the second end face, and a pair of the mounting holes are arranged opposite to each other along the extending direction of the bushing. A fixed bearing seat is respectively installed at each of the pair of mounting holes, and at least one second bearing is installed in each of the fixed bearing seats. The second bearing is coaxially sleeved on the bushing.

[0016] In the above technical solution, further preferably, both the first bearing and the second bearing are deep groove ball bearings.

[0017] In the above technical solution, further preferably, a pair of spacer rings are sleeved on the bushing, and the pair of spacer rings are respectively arranged along the axial direction of the bushing. Each of the spacer rings is located between the end face of the second toothed sprocket and the corresponding fixed bearing seat.

[0018] The present application has the following beneficial effects compared with the prior art:

[0019] The driving device of the present application has a simple structure, is easy to manufacture, and has a low manufacturing cost. Description of the Drawings

[0020] Figure 1 FIG. is a schematic perspective view of a driving device provided by an embodiment of the present application;

[0021] Figure 2 is Figure 1 a side view of the driving device in

[0022] Figure 3 is Figure 2 a cross-sectional view taken along line A-A in

[0023] Figure 4 is Figure 3 a partially enlarged schematic view at B in

[0024] Figure 5 is Figure 3 a partially enlarged schematic view at C in

[0025] Wherein: 100, driving device; 10, power driving source; 20, power transmission mechanism; 1, box body; 101, first end face; 102, second end face; 103, notch; 2, transmission shaft; 3, first toothed sprocket; 4, second toothed sprocket; 6, sliding bearing seat; 61, first bearing; 7, guide bar; 8, bushing; 9, fixed bearing seat; 91, second bearing; 92, gland; 12, spacer ring; 30, connecting flange. Detailed Description of the Embodiment

[0026] In order to describe in detail the technical content, structural features, achieved objectives and effects of the application, the technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. In the following description, for the purpose of explanation, many specific details are set forth to provide a detailed description of various exemplary embodiments or implementations of the invention. However, various exemplary embodiments may also be implemented without these specific details or in one or more equivalent arrangements. In addition, various exemplary embodiments may be different, but not necessarily exclusive. For example, without departing from the inventive concept, the specific shapes, structures and characteristics of the exemplary embodiments may be used or implemented in another exemplary embodiment.

[0027] As used in the present application, "front", "rear", "left", "right", "upper" and "lower" are in accordance with the Figure 1 front, rear, left, right, upper and lower shown in the

[0028] The embodiment of the present application provides a driving device for a large roller, wherein the driving device 100 is drivingly connected to the roller to drive the roller to rotate around its own axis.

[0029] like Figure 1 , 2 As shown, the driving device 100 includes a power source 10 and a power transmission mechanism 20, and the power transmission mechanism 20 is connected between the power source 10 and the roller to transmit the torque of the power source 10 to the roller, so that the roller rotates under the action of the torque. In the embodiment of the present application, the power source 10 and the power transmission mechanism 20 are arranged in sequence from left to right.

[0030] like Figure 1 , 3 As shown, the power transmission mechanism 20 includes: a housing 1, a transmission shaft 2, a first toothed sprocket 3, a second toothed sprocket 4 and a chain (not shown in the figure). The first toothed sprocket 3, the second toothed sprocket 4 and the chain are all contained in the housing 1, the transmission shaft 2 is rotatably arranged on the housing 1 around its own axis, and is in transmission connection with the power driving source 10; the first toothed sprocket 3 is coaxially sleeved on the transmission shaft 2, the axis of the second toothed sprocket 4 is parallel to the axis of the first toothed sprocket 3, and the second toothed sprocket 4 is located in front of the first toothed sprocket 3; the chain is combined with the first toothed sprocket 3 and the second toothed sprocket 4 to transmit the rotation of the first toothed sprocket 3 to the second toothed sprocket 4.

[0031] The housing 1 comprises a first end surface 101 and a second end surface 102 which are arranged opposite to each other on the left and right sides. The power driving source 10 is installed on the side where the first end surface 101 is located, and the roller is installed on the side where the second end surface is located.

[0032] The connection flange 30 is configured to be slidably mounted on the first end surface 101 in the front-rear direction, and the connection flange 30 is connected between the housing 1 and the power driving source 10 .

[0033] The transmission shaft 2 is passed through the housing 1 from right to left, and the left end of the transmission shaft 2 is passed through the connecting flange 30 and connected to the power driving source 10. The transmission shaft 2 rotates around its own axis under the drive of the power driving source 10, and the first toothed sprocket 3 rotates with the transmission shaft 2. The chain transmits the movement of the first toothed sprocket 3 to the second toothed sprocket 4.

[0034] A pair of notches 103 which are arranged oppositely left and right are formed in the box body 1. The pair of notches 103 are respectively formed in the first end face 101 and the second end face 102, and the pair of notches 103 are for a transmission shaft 2 to pass through and be arranged inside the box body 1. At the notch 103 of the second end face 102, a sliding bearing seat 6 is arranged. The sliding bearing seat 6 is configured to be movably arranged in the notch 103 along the front-back direction; at least one first bearing 61 is arranged inside the sliding bearing seat 6, and a first bearing 61 is also arranged inside the connecting flange 30. The first bearings 61 are coaxially sleeved on the transmission shaft 2. The transmission shaft 2 is rotatably mounted on the connecting flange 30 and the sliding bearing seat 6 around its own axis, and is arranged on the box body 1 so as to be movable along the front-back direction together with the connecting flange and the sliding bearing seat 6.

[0035] As Figures 3 - 5 shown, a pair of guide bars 7 extending along the front-back direction are arranged at each notch 103. A pair of guide bars 7 on the same side are arranged oppositely up and down on the upper side and the lower side of the corresponding notch 103. The sliding bearing seat 6 is in sliding fit with the pair of guide bars 7 on the second end face 102, and the connecting flange 30 is in sliding fit with the pair of guide bars 7 on the first end face 101. The connecting flange 30 and the sliding bearing seat 6 carry the transmission shaft 2 passing through the pair of notches 103 to move back and forth along the corresponding guide bars 7, so as to adjust the distance between the first toothed sprocket 3 and the second toothed sprocket 4 on the transmission shaft 2.

[0036] A pair of mounting holes which are arranged oppositely left and right are formed in the box body 1. The pair of mounting holes are respectively formed in the first end face 101 and the second end face 102. A bushing 8 parallel to the transmission shaft 2 is rotatably arranged at the pair of mounting holes of the box body 1. A fixed bearing seat 9 is arranged at each mounting hole. The bushing 8 is rotatably mounted on the box body 1 around its own axis through the pair of fixed bearing seats 9; at least one second bearing 91 is arranged inside each fixed bearing seat 9. The second bearings 91 are all sleeved on the bushing 8, so that the bushing 8 can be rotatably arranged on the box body 1 around its own axis; in the embodiment of the present application, the first bearing 61 and the second bearing 91 are both deep groove ball bearings. The second toothed sprocket 4 is coaxially sleeved on the bushing 8, and the bushing 8 is key-connected to the second toothed sprocket 4 so as to be able to rotate synchronously with the second toothed sprocket 4.

[0037] The bushing 8 is a hollow cylinder. The inside of the bushing 8 can be coaxially penetrated by the end of a roller. The second toothed sprocket 4, the bushing 8 and the roller are coaxially arranged from outside to inside. The bushing 8 is between the second toothed sprocket 4 and the roller, so that the second toothed sprocket 4 and the roller are coaxial and rotate synchronously; when the second toothed sprocket 4 rotates under the drive of the first toothed sprocket 3, the bushing 8 and the roller rotate synchronously.

[0038] The ratio of the number of teeth of the first toothed sprocket 3 to the number of teeth of the second toothed sprocket 4 is 1:2. The tooth number ratio of the two sprockets reduces the rotational speed output by the power drive source 10 when output by the roller, playing a role in speed reduction.

[0039] A pair of spacer rings 12 are also sleeved on the bushing 8. The pair of spacer rings 12 are arranged in sequence along the axial direction of the bushing 8, and the pair of spacer rings 12 are respectively located at the left end and the right end of the second toothed sprocket 4. Each spacer ring 12 abuts between the end of the second toothed sprocket 4 and the corresponding fixed bearing seat 9, thereby limiting the position of the second toothed sprocket 4 on the bushing 8 on the left and right sides of the second toothed sprocket 4.

[0040] The left end of the transmission shaft 2 extends out from the left side of the box body 1; the roller extends out from the right side of the box body 1, and a gland 92 is installed on the fixed bearing seat 9 on the left side of the box body 1.

[0041] The design of the drive device of the present application can drive a large roller with a large mass, and has a simple structure, is easy to manufacture, and has a low manufacturing cost.

[0042] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art of this industry should understand that the present application is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present application. Without departing from the spirit and scope of the present application, the present application will have various changes and improvements. The scope of protection required by the present application is defined by the appended claims, the specification and their equivalents.

Claims

1. A driving device for a large roller, comprising a power driving source and a power transmission mechanism, wherein the power transmission mechanism is connected between the power driving source and the roller to transmit the torque of the power driving source to the roller, characterized in that: The power transmission mechanism comprises: The box body comprises a first end face and a second end face which are arranged opposite to each other, and the power driving source is installed on the side where the first end face is located; A transmission shaft is rotatably mounted in the housing around its own axis, one end of the transmission shaft extends from the first end surface and is connected to the power driving source, and the transmission shaft is perpendicular to the first end surface and the second end surface; A first toothed sprocket is coaxially sleeved on the transmission shaft, and the first toothed sprocket is configured to rotate synchronously with the transmission shaft; A second toothed sprocket is rotatably mounted in the housing about its own axis, the axis of the second toothed sprocket is parallel to the axis of the first toothed sprocket, and the second toothed sprocket is configured to be coaxially connected to the roller; and a chain, combined with the first toothed sprocket and the second toothed sprocket; Among them, the ratio of the number of teeth of the first toothed sprocket to the number of teeth of the second toothed sprocket is 1:2, and the transmission shaft is configured to be able to approach and move away from the second toothed sprocket along a first direction, and the first direction is perpendicular to the axial direction of the transmission shaft.

2. The driving device according to claim 1, characterized in that: The first end face and the second end face are respectively provided with a notch, and a pair of the notches are arranged opposite to each other along the axial direction of the transmission shaft. A sliding bearing seat is arranged at the notch of the second end face, and at least one first bearing is installed in the sliding bearing seat. The first bearing is coaxially sleeved on the transmission shaft, and the sliding bearing seat is configured to be arranged on the box body so as to move back and forth along the first direction.

3. The driving device according to claim 2, characterized in that: A connecting flange is provided at the notch of the first end face, the connecting flange is connected between the housing and the power driving source and allows the transmission shaft to pass through the power driving source, and the connecting flange is configured to be arranged on the housing so as to move back and forth along the first direction.

4. The driving device according to claim 3, characterized in that: At least one pair of guide strips is arranged at each of the notches, each of the guide strips extends along the first direction, the sliding bearing seat is slidably matched with the guide strip at the second end surface, and the connecting flange is slidably matched with the guide strip at the first end surface.

5. The driving device according to claim 2, characterized in that: A shaft sleeve is also rotatably arranged in the box body, and the second toothed sprocket, the shaft sleeve and the roller are coaxially arranged from the outside to the inside, and the shaft sleeve is connected between the second toothed sprocket and the roller to allow the roller to rotate synchronously with the second toothed sprocket.

6. The driving device according to claim 5, characterized in that: A mounting hole is respectively provided on the first end face and the second end face, and a pair of the mounting holes are arranged relatively to each other along the extension direction of the sleeve, and a fixed bearing seat is respectively installed at the pair of mounting holes, and at least one second bearing is installed in each of the fixed bearing seats, and the second bearing is coaxially sleeved on the sleeve.

7. The driving device according to claim 6, characterized in that: The first bearing and the second bearing are both deep groove ball bearings.

8. The driving device according to claim 6, characterized in that: A pair of spacers are sleeved on the shaft sleeve, and the pair of spacers are arranged respectively along the axial direction of the shaft sleeve, and each of the spacers is located between the end face of the second toothed sprocket and the corresponding fixed bearing seat.

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