CN209781591U - tensioning device with transmission mechanism - Google Patents
tensioning device with transmission mechanism Download PDFInfo
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- CN209781591U CN209781591U CN201920407163.XU CN201920407163U CN209781591U CN 209781591 U CN209781591 U CN 209781591U CN 201920407163 U CN201920407163 U CN 201920407163U CN 209781591 U CN209781591 U CN 209781591U
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Abstract
the utility model relates to the technical field of mechanical transmission, and provides a tensioning device with a transmission mechanism, which comprises a driving device and a tensioning adjusting device, wherein the driving device comprises an installation bottom plate, a motor bracket, a driving motor, a rotating shaft, a bearing seat and a belt transmission component; the driving motor is supported on the motor bracket, and the bearing pedestal is sleeved on the rotating shaft and is fixedly connected with the mounting bottom plate. The tensioning adjusting device comprises an adjusting base plate and a positioning base block arranged on the adjusting base plate, and the positioning base block is provided with a positioning hole for placing a motor shaft of the driving motor; the adjusting base plate is provided with a guide groove, and the inner wall of the guide groove is provided with a guide flange which is used for being abutted against the outer peripheral wall of the bearing seat. Compared with the prior art, the tension degree consistency of the belt transmission assembly is guaranteed, and the belt transmission assembly is convenient to install, simple in structure and low in cost.
Description
Technical Field
the utility model belongs to the technical field of mechanical transmission's technique and specifically relates to a take drive mechanism's overspeed device tensioner is related to.
Background
the belt transmission is a mechanical transmission which utilizes a flexible belt tensioned on a belt wheel to carry out motion or power transmission, has the characteristics of simple structure, stable transmission, capability of buffering and absorbing vibration, capability of transmitting power between large shaft distance and multiple shafts, low manufacturing cost, no need of lubrication, easy maintenance and the like, and is widely applied to the fields of industry, automobiles, agricultural machinery, household appliances and the like.
For a driving device with a belt transmission mechanism, before the belt driving device is produced, each driving device needs to be debugged so as to have a certain tension degree, and the traditional tensioning debugging modes mainly comprise three types: the first is to use a tension wheel to press the transmission belt by means of a spring or gravity to prevent the transmission belt from loosening and slipping in use, however, the structure is complex and the cost is relatively high; the second is to manually adjust the relative position of the driving pulley and the driven pulley to achieve the purpose of tensioning the transmission belt, however, the tightness degree of the transmission belt is difficult to keep consistent for mass production; the third is that the empirically designed driving pulley and driven pulley center distances are relatively fixed, which, however, makes the drive belt difficult to install.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a take drive mechanism's overspeed device tensioner to solve the tensioning structure that has the drive arrangement of taking drive mechanism who exists among the prior art complicated relatively, the cost is higher, and the tensioning degree of drive belt is difficult to keep unanimous, the difficult technical problem who installs of drive belt.
In order to achieve the above object, the utility model adopts the following technical scheme: there is provided a tensioner with a transmission mechanism comprising a drive means and a tension adjustment means for adjusting the tension of the drive means, wherein the drive means comprises:
Mounting a bottom plate;
The motor bracket is supported on the mounting bottom plate, and a connecting structure is arranged between the motor bracket and the mounting bottom plate so that the motor bracket and the mounting bottom plate can move relatively;
A drive motor supported on the motor bracket, the drive motor having a motor shaft extending toward the mounting base plate in a direction perpendicular to the surface of the mounting base plate;
A rotating shaft;
The bearing block is sleeved on the rotating shaft and is fixedly connected with the mounting bottom plate; and
A belt transmission assembly connected between the rotating shaft and the motor shaft;
The tension adjusting device includes:
An adjustment base plate for supporting the mounting base plate; and
The positioning base block is arranged on the adjusting base plate and is provided with a positioning hole for placing the motor shaft;
The adjusting base plate is provided with a guide groove for the bearing seat to be placed in, the inner wall of the guide groove is provided with a guide flange for abutting against the outer peripheral wall of the bearing seat, and the bearing seat winds the axis of the motor shaft and adjusts the distance between the central line of the bearing seat and the axis of the motor shaft when the adjusting base plate rotates relative to the axis of the motor shaft.
Further, the positioning base block surface has a lateral direction and a longitudinal direction perpendicular to each other; the guide groove comprises an embedding area and a positioning area which are communicated with each other, the guide retaining side comprises a first straight line section, a second straight line section, a first circular arc section located in the embedding area, a second circular arc section located in the positioning area, and a transition circular arc section located between the first circular arc section and the second circular arc section, the first straight line section extends to the transition circular arc section from the first circular arc section along the direction parallel to the longitudinal direction, and the second straight line section extends to the second circular arc section from the transition circular arc section along the direction parallel to the transverse direction; the length dimension of the first straight line segment is greater than the length dimension of the second straight line segment.
Furthermore, the adjusting substrate is provided with a mounting chute, and the mounting chute extends from the middle part of the adjusting substrate to the periphery of the adjusting substrate along a direction parallel to the longitudinal direction; the positioning base block is arranged in the mounting chute in a sliding mode, and the positioning base block and the adjusting base plate are provided with distance adjusting structures so that the positioning base block and the adjusting base plate can move relatively.
Further, the roll adjustment structure is including offering base block fixed orifices on the regulation base plate, and offer on the location base block and with the base block waist shape hole that the base block fixed orifices corresponds.
Furthermore, the side wall of the positioning base block is provided with a limiting convex part in an outward protruding mode so as to limit the relative movement of the positioning base block and the adjusting base plate in the thickness direction of the adjusting base plate.
Furthermore, a plurality of avoiding grooves independent from the guide grooves are formed in the adjusting substrate.
Further, the connection structure comprises a support fixing hole formed in the mounting base plate and a support waist-shaped hole formed in the motor support and corresponding to the support fixing hole.
Further, the belt transmission assembly comprises a driving wheel in key connection with the motor shaft, a driven wheel in key connection with the rotating shaft, and a transmission belt wrapped between the driving wheel and the driven wheel.
Further, a bearing assembly is arranged between the bearing seat and the rotating shaft, and the bearing assembly comprises two bearings arranged at intervals along the axial direction of the rotating shaft and a shaft end retainer ring arranged between the two bearings.
furthermore, the rotating shaft comprises a supporting part and a connecting part which are connected with each other, the bearing seat is sleeved on the supporting part, the connecting part is provided with an axial limiting surface which is positioned at the top end of the connecting part and used for supporting the bearing, and the axial limiting surface is arranged around the supporting part; the supporting part is provided with an axial limiting groove, the axial limiting groove is arranged along the whole circumferential extension of the supporting part, and a clamping ring part used for limiting the movement of the bearing is clamped in the axial limiting groove of the supporting part.
compared with the prior art, the utility model provides a take drive mechanism's overspeed device tensioner adopts drive arrangement and tensioning adjusting device, tensioning adjusting device is including adjusting base plate and location base block, the locating hole that can utilize the location base block makes the motor support, driving motor's position keeps, through the bearing frame along the removal of direction flange in the guide way, adjust the relative position of mounting plate and motor support, adjust driving motor's motor shaft and the relative position of axis of rotation promptly, thereby guarantee the uniformity of take drive assembly's tensioning degree, and the installation is convenient, moreover, the steam generator is simple in structure, and is low in cost.
drawings
Fig. 1 is a schematic perspective view of a tensioner with a transmission according to an embodiment of the present invention;
Fig. 2 is a schematic bottom view of a tensioner with a drive mechanism according to an embodiment of the present invention;
3 FIG. 33 3 is 3 a 3 schematic 3 cross 3- 3 sectional 3 view 3 taken 3 along 3 plane 3 A 3- 3 A 3 of 3 FIG. 32 3; 3
Fig. 4 is a first exploded schematic view of a tensioner with a belt drive according to an embodiment of the present invention;
Fig. 5 is a second exploded schematic view of a tensioning device of a belt drive according to an embodiment of the present invention.
Description of the main elements
100: belt drive tensioner 10: drive device
11: mounting the base plate 111: first through hole
112: second through hole
12: the motor bracket 121: cover part
122: leg 123: containing space
13: driving the motor 131: motor shaft
132: motor fastener 133: third through hole
14: rotation shaft 141: transmission part
142: support portion 143: connecting part
144: axial stopper surface 145: axial limiting groove
15: bearing seat 151: bearing seat fastener
16: belt drive assembly 161: driving wheel
162: the driven wheels 163: transmission belt
17: the connecting structure 171: support fixing hole
172: bracket waist-shaped hole 173: bracket fastener
18: bearing assembly 181: bearing assembly
182: shaft end retainer ring 183: snap ring piece
20: tension adjusting device
21: the adjustment substrate 211: guide groove
211 a: insertion region 211 b: location area
212: guide rib 213: first arc segment
214: first straight line segment 215: transition arc section
216: second straight line segment 217: second arc segment
218: mounting the sliding groove 219: dodging groove
22: positioning base block 221: locating hole
222: limiting convex part
23: the pitch adjusting structure 231: base block fixing hole
232: waist-shaped hole of base block
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It is to be understood that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive work based on the described embodiments of the present invention, belong to the protection scope of the present invention.
in order to make those skilled in the art better understand the technical solution of the present invention, the following detailed description is provided for the implementation of the present invention with reference to the specific drawings.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one.
As shown in fig. 1 to 5, a preferred embodiment of the present invention is provided.
The tensioning device 100 of the belt transmission mechanism provided by the embodiment comprises a driving device 10 and a tensioning adjusting device 20 for adjusting the tensioning degree of the driving device 10, wherein the driving device 10 comprises a mounting base plate 11, a motor bracket 12, a driving motor 13, a rotating shaft 14, a bearing seat 15 and a belt transmission assembly 16, the motor bracket 12 is supported on the mounting base plate 11, and a connecting structure 17 is arranged between the motor bracket 12 and the mounting base plate 11, so that the motor bracket 12 and the mounting base plate 11 can move relatively; the driving motor 13 is supported on the motor bracket 12, the driving motor 13 has a motor shaft 131, the motor shaft 131 extends toward the mounting base plate 11 in a direction perpendicular to the surface of the mounting base plate 11; the bearing seat 15 is sleeved on the rotating shaft 14 and is fixedly connected with the mounting bottom plate 11; the belt transmission assembly 16 is connected between the rotating shaft 14 and the motor shaft 131. The tension adjusting device 20 includes an adjusting base plate 21 and a positioning base block 22, the adjusting base plate 21 is used for supporting the mounting baseplate 11; the positioning base block 22 is arranged on the adjusting base plate 21, and the positioning base block 22 is provided with a positioning hole 221 for the motor shaft 131 to be placed in; the adjusting base plate 21 is provided with a guide groove 211 for placing the bearing seat 15, and the inner wall of the guide groove 211 is provided with a guide rib 212 for abutting against the outer peripheral wall of the bearing seat 15, and adjusting the distance between the center line of the bearing seat 15 and the axis of the motor shaft 131 when the bearing seat 15 rotates around the axis of the motor shaft 131 relative to the adjusting base plate 21.
the tensioning device 100 with the transmission mechanism adopts the driving device 10 and the tensioning adjusting device 20, the tensioning adjusting device 20 comprises an adjusting base plate 21 and a positioning base block 22, and the adjusting base plate 21 is used for supporting the mounting base plate 11; the positioning base block 22 is arranged on the adjusting base plate 21, and the positioning base block 22 is provided with a positioning hole 221 for the motor shaft 131 to be placed in; the adjusting base plate 21 is provided with a guide groove 211 for placing the bearing seat 15, the inner wall of the guide groove 211 is provided with a guide rib 212 for abutting against the outer peripheral wall of the bearing seat 15, and when the bearing seat 15 rotates around the axis of the motor shaft 131 relative to the adjusting base plate 21, the distance between the central line of the bearing seat 15 and the axis of the motor shaft 131 is adjusted, thus, the positions of the motor support 12 and the driving motor 13 can be kept by utilizing the positioning hole 221 of the positioning base block 22, the relative positions of the mounting base plate 11 and the motor support 12, namely, the relative positions of the motor shaft 131 and the rotating shaft 14 of the driving motor 13 are adjusted through the movement of the bearing seat 15 in the guide groove 211 along the guide rib 212, so that the consistency of the tensioning degree of the belt transmission assembly 16 is ensured, the installation is convenient, the structure is simple, and.
Referring to fig. 1 to 5, the driving apparatus 10 of the present embodiment includes a mounting base plate 11, a motor bracket 12, a driving motor 13, a rotating shaft 14, a bearing seat 15 and a belt transmission assembly 16, wherein the rotating shaft 14 is used for connecting a rotating portion of a robot, such as a shoulder, an arm, etc., and the rotating portion is driven to rotate by the driving motor 13 through the rotating shaft 14.
Referring to fig. 1 to 5, a mounting base plate 11, which is a substantially rectangular flat plate, is supported on the mounting base plate 11, and a motor bracket 12 and a bearing seat 15 are supported on the mounting base plate 11, and the mounting base plate 11 is provided with a first through hole 111 and a second through hole 112 that are independent of each other.
Referring to fig. 1 to 5, a motor bracket 12 is disposed on the mounting base plate 11 and corresponds to the first through hole 111, and a connection structure 17 is disposed between the motor bracket 12 and the mounting base plate 11 so that the two can move relatively. In the present embodiment, the connecting structure 17 includes a bracket fixing hole 171 formed on the mounting base plate 11, and a bracket waist-shaped hole 172 formed on the motor bracket 12 and corresponding to the bracket fixing hole 171, and the bracket fastening member 173 is, but not limited to, a screw, and passes through the bracket waist-shaped hole 172 and the bracket fixing hole 171 in sequence, and is screwed and fixed with a nut to connect and fix the motor bracket 12 and the mounting base plate 11. It will be readily appreciated that after the bracket fastener 173 is loosened, the motor bracket 12 and the mounting base plate 11 can be moved relative to each other through the bracket slot 172 to adjust the relative position of the motor bracket 12 and the mounting base plate 11. The bracket waist-shaped hole 172 is designed to facilitate the adjustment of the position of the motor bracket 12 and the mounting base plate 11, so as to adjust the tightness of the belt transmission assembly 16.
Specifically, the motor bracket 12 includes a cover portion 121 and a foot portion 122 connected to a bottom end of the cover portion 121 and extending outward, a bracket waist-shaped hole 172 is formed on the foot portion 122, and an accommodating space 123 is formed between the cover portion 121 and the mounting base plate 11 and is communicated with the first through hole 111.
Referring to fig. 1 to 5, the driving motor 13 is supported on the motor bracket 12, and the driving motor 13 has a motor shaft 131, and the motor shaft 131 extends toward the mounting baseplate 11 in a direction perpendicular to the surface of the mounting baseplate 11. In this embodiment, the driving motor 13 is fixedly mounted on the cover portion 121 of the motor bracket 12 by a motor fastener 132, and the cover portion 121 is provided with a third through hole 133 for the motor shaft 131 to extend into the accommodating space 123.
Referring to fig. 1 to 5, the bearing seat 15, which has a circular cross section, is fixedly connected to the mounting base plate 11, in this embodiment, the bearing seat 15 is fixedly mounted on the bottom surface of the mounting base plate 11 by a bearing seat fastening member 151, and corresponds to the second through hole 112, and the bearing seat fastening member 151 is, but not limited to, a screw.
Referring to fig. 1 to 5, the rotating shaft 14 is connected to the motor shaft 131 of the driving motor 13 through the belt transmission assembly 16, the bearing seat 15 is sleeved on the rotating shaft 14, the rotating shaft 14 and the bearing seat 15 are coaxially arranged, two ends of the rotating shaft 14 respectively extend out of the end portions of the bearing seats 15, the rotating shaft 14 and the bearing seats 15 can rotate relatively, and the axis of the rotating shaft 14 is parallel to the axis of the motor shaft 131. Between the bearing housing 15 and the rotating shaft 14, a bearing assembly 18 is provided, and in the present embodiment, the bearing assembly 18 includes two bearings 181 provided at intervals in the axial direction of the rotating shaft 14, and a shaft end collar 182 provided between the two bearings 181. The rotating shaft 14 is a stepped shaft and comprises a transmission part 141, a supporting part 142 and a connecting part 143 which are sequentially connected, the bearing seat 15 is sleeved on the supporting part 142, the connecting part 143 is provided with an axial limiting surface 144 which is positioned at the top end of the connecting part and is used for supporting a bearing, and the axial limiting surface 144 is arranged around the supporting part 142; the axial limiting groove 145 is formed in the supporting portion 142, the axial limiting groove 145 extends along the whole circumferential direction of the supporting portion 142, and the snap ring component 183 used for limiting the movement of the bearing is clamped in the axial limiting groove 145 of the supporting portion 142. It will be readily understood that the snap ring member 183 axially limits the rotational shaft 14 with the axial direction limiting surface 144 of the connecting portion 143, thereby maintaining the relative position of the rotational shaft 14 and the bearing housing 15.
Referring to fig. 1 to 5, the belt drive assembly 16 includes a driving pulley 161 keyed on the motor shaft 131, a driven pulley 162 keyed on the rotating shaft 14, and a driving belt 163 wrapped between the driving pulley 161 and the driven pulley 162. In the present embodiment, the driven pulley 162 is keyed to the transmission section 141 of the rotating shaft 14, the transmission belt 163 is, but not limited to, a timing belt, and the driving pulley 161 and the driven pulley 162 are, but not limited to, timing pulleys.
Referring to fig. 1 to 5, a tension adjusting device 20 for adjusting the tension of the driving device 10 includes an adjusting base plate 21 and a positioning base block 22.
referring to fig. 1 to 5, an adjustment substrate 21 for supporting the mounting baseplate 11, in the present embodiment, the adjustment substrate 21 is a substantially rectangular flat plate, and when the drive device 10 needs to be adjusted, the mounting baseplate 11 of the drive device 10 is placed on the adjustment substrate 21.
Referring to fig. 1 to 5, a positioning base block 22 is provided on the adjustment base plate 21, and the positioning base block 22 has a positioning hole 221 into which the motor shaft 131 is inserted. In the present embodiment, the cross-sectional shape of the positioning hole 221 matches the cross-sectional shape of the motor shaft 131, and it is understood that the mounting baseplate 11 of the driving device 10 is placed on the adjustment baseplate 21, the motor shaft 131 is partially placed in the positioning hole 221, the center axis of the positioning hole 221 is arranged coaxially with the axis of the motor shaft 131, and the motor shaft 131 can rotate about the center axis of the positioning hole 221 relative to the positioning base block 22.
Referring to fig. 1 to 5, the adjusting base plate 21 is provided with a guide groove 211 for placing the bearing seat 15 therein, and the inner wall of the guide groove 211 is provided with a guide rib 212 for abutting against the outer peripheral wall of the bearing seat 15, and adjusting the distance between the center line of the bearing seat 15 and the axis of the motor shaft 131 when the bearing seat 15 rotates around the axis of the motor shaft 131 relative to the adjusting base plate 21. In the present embodiment, the surface of the positioning base block 22 has a transverse direction (shown as direction D1, hereinafter collectively referred to as a first direction D1) and a longitudinal direction (shown as direction D2, hereinafter collectively referred to as a second direction D2) perpendicular to each other, and the guide groove 211 includes an insertion region 211a and a positioning region 211b communicating with each other, the insertion region 211a being for insertion of the bearing housing 15 when the driving device 10 is placed on the adjustment substrate 21. The guide rib 212 comprises a first straight line segment 214, a second straight line segment 216, a first circular arc segment 213 positioned in the embedding region 211a, a second circular arc segment 217 positioned in the positioning region 211b, and a transition circular arc segment 215 positioned between the first circular arc segment 213 and the second circular arc segment 217, wherein the first straight line segment 214 extends from the first circular arc segment 213 to the transition circular arc segment 215 along a direction parallel to the second direction D2, and the second straight line segment 216 extends from the transition circular arc segment 215 to the second circular arc segment 217 along a direction parallel to the first direction D1; the first linear segment 214 has a length dimension greater than the length dimension of the second linear segment 216.
Specifically, the first arc segment 213 and the second arc segment 217 are both curved toward the center of the guide groove 211, and the central angles of the first arc segment 213 and the second arc segment 217 are both 90 °. The transition circular arc segment 215 is curved toward the outside of the guide groove 211 with a central angle of 90 °, and the radius of the first circular arc segment 213 is the same as that of the second circular arc segment 217 and smaller than that of the transition circular arc segment 215. It should be noted that, when the bearing seat 15 is located in the embedding region 211a, the outer peripheral wall of the bearing seat 15 is tangent to the first straight line segment 214, when the bearing seat 15 slides into the positioning region 211b, the outer peripheral wall of the bearing seat is tangent to the second straight line segment 216, the preset distance L1 between the center of the positioning hole 221 and the first straight line segment 214 is smaller than the adjusting distance L2 between the center of the positioning hole 221 and the second straight line segment 216, and after the bearing seat 15 slides into the positioning region 211b from the embedding region 211a along the guide rib 212, the distance between the central axis of the bearing seat 15 and the central axis of the positioning hole 221 is the radius of the bearing seat 15 plus the adjusting distance L2.
Referring to fig. 1 to 5, in this embodiment, after the positioning base block 22 is located, the adjusting distance L2 between the center of the positioning hole 221 and the second straight line segment 216 is set to be a set value, before the driving device 10 is adjusted, the bracket fastener 173 is loosened, that is, the motor bracket 12 and the mounting base plate 11 can move relatively in the bracket waist-shaped hole 172 of the motor bracket 12, the motor shaft 131 is inserted into the positioning hole 221 of the positioning base block 22, and at the same time, the bearing seat 15 is inserted into the insertion region 211a, the bearing seat 15 is pushed to slide into the positioning region 211b along the guide rib 212, while the bearing seat 15 slides, the whole driving device 10 swings around the center line of the positioning hole 221, since the relative positions of the motor bracket 12, the driving motor 13 and the driving wheel 161 are maintained by the positioning base block 22, the bearing seat 15, the rotating shaft 14 and the mounting base plate 11 will move relatively to the motor bracket 12 while swinging, and after the bearing seat 15 slides into the positioning region 211b, the bracket fastener 173 is tightened to connect and fix the motor bracket 12 and the mounting base plate 11. It will be appreciated that the drive assemblies 10 are adjusted using the tension adjustment assembly 20 to ensure that the spacing between the axis of the motor shaft 131 and the axis of the rotating shaft 14 is uniform and the tension of the belt drive assembly 16 is consistent for each drive assembly 10 after adjustment.
referring to fig. 1 to 5, the adjusting base plate 21 of the present embodiment is provided with a mounting chute 218, and the mounting chute 218 extends from the middle of the adjusting base plate 21 to the periphery of the adjusting base plate 21 along a direction parallel to the second direction D2; the positioning base block 22 is slidably disposed in the mounting chute 218, and the positioning base block 22 and the adjusting base plate 21 are provided with a distance adjusting structure 23 so that the positioning base block 22 and the adjusting base plate can move relatively. In the present embodiment, the distance adjusting structure 23 includes a base block fixing hole 231 formed on the adjusting base plate 21, and a base block waist-shaped hole 232 formed on the positioning base block 22 and corresponding to the base block fixing hole 231, and the positioning base block 22 and the adjusting base plate 21 are connected and fixed by a base block fastener (not shown) through the base block waist-shaped hole 232 and the base block fixing hole 231 in sequence, and after being screwed and fixed with a nut, the base block fastener is but not limited to a screw.
Referring to fig. 1 to 5, a limiting protrusion 222 is disposed on a side wall of the positioning base block 22 and protrudes outward to limit relative movement between the positioning base block 22 and the adjusting base plate 21 in the thickness direction of the adjusting base plate 21, the limiting protrusion 222 abuts against a bottom surface of the adjusting base plate 21, and a base block kidney-shaped hole 232 is formed on the limiting protrusion 222.
Referring to fig. 1 to 5, the adjusting substrate 21 is provided with an avoiding groove 219 independent from the guide groove 211, in this embodiment, the number of the avoiding grooves 219 is not limited to two, and it is easy to understand that, by providing the avoiding groove 219, after the bearing seat 15 slides into the positioning region 211b, the nut can be conveniently operated from below the adjusting substrate 21, so as to screw the nut and the bracket fastening member 173, thus, the motor bracket 12 and the mounting base plate 11 can be easily mounted, and the assembling effect is improved.
the above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the present invention.
Claims (10)
1. A tensioner with a transmission mechanism, comprising a drive and a tension adjustment device for adjusting the tension of the drive, characterized in that the drive comprises:
mounting a bottom plate;
The motor bracket is supported on the mounting bottom plate, and a connecting structure is arranged between the motor bracket and the mounting bottom plate so that the motor bracket and the mounting bottom plate can move relatively;
A drive motor supported on the motor bracket, the drive motor having a motor shaft extending toward the mounting base plate in a direction perpendicular to the surface of the mounting base plate;
A rotating shaft;
The bearing block is sleeved on the rotating shaft and is fixedly connected with the mounting bottom plate; and
A belt transmission assembly connected between the rotating shaft and the motor shaft;
the tension adjusting device includes:
an adjustment base plate for supporting the mounting base plate; and
The positioning base block is arranged on the adjusting base plate and is provided with a positioning hole for placing the motor shaft;
The adjusting base plate is provided with a guide groove for the bearing seat to be placed in, the inner wall of the guide groove is provided with a guide flange for abutting against the outer peripheral wall of the bearing seat, and the bearing seat winds the axis of the motor shaft and adjusts the distance between the central line of the bearing seat and the axis of the motor shaft when the adjusting base plate rotates relative to the axis of the motor shaft.
2. the belt drive tensioner of claim 1, wherein the positioning block surface has a lateral direction and a longitudinal direction perpendicular to each other; the guide groove comprises an embedding area and a positioning area which are communicated with each other, the guide retaining side comprises a first straight line section, a second straight line section, a first circular arc section located in the embedding area, a second circular arc section located in the positioning area, and a transition circular arc section located between the first circular arc section and the second circular arc section, the first straight line section extends to the transition circular arc section from the first circular arc section along the direction parallel to the longitudinal direction, and the second straight line section extends to the second circular arc section from the transition circular arc section along the direction parallel to the transverse direction; the length dimension of the first straight line segment is greater than the length dimension of the second straight line segment.
3. The belt drive tensioner as in claim 2, wherein the adjustment base plate defines a mounting slot extending from a middle portion of the adjustment base plate to a periphery of the adjustment base plate in a direction parallel to the longitudinal direction; the positioning base block is arranged in the mounting chute in a sliding mode, and the positioning base block and the adjusting base plate are provided with distance adjusting structures so that the positioning base block and the adjusting base plate can move relatively.
4. The belt drive tensioner of claim 3, wherein the pitch adjustment structure comprises a base block fixing hole formed in the adjustment base plate, and a base block kidney-shaped hole formed in the positioning base block and corresponding to the base block fixing hole.
5. The belt drive tensioner as claimed in claim 3, wherein a limiting protrusion is formed on a side wall of the positioning base block so as to protrude outward, so as to limit the relative movement between the positioning base block and the adjustment base plate in the thickness direction of the adjustment base plate.
6. The belt drive tensioner as claimed in claim 1, wherein the adjustment base plate has a plurality of relief grooves formed therein, the relief grooves being independent of the guide grooves.
7. The belt drive tensioner of any of claims 1 to 6, wherein the connecting structure comprises a bracket fixing hole provided on the mounting base plate, and a bracket waist-shaped hole provided on the motor bracket and corresponding to the bracket fixing hole.
8. the belt drive tensioner as in any one of claims 1-6, wherein the belt drive assembly comprises a drive pulley keyed to the motor shaft, a driven pulley keyed to the rotating shaft, and a drive belt wrapped between the drive pulley and the driven pulley.
9. The belt drive tensioner of any one of claims 1 to 6, wherein a bearing assembly is disposed between the bearing housing and the rotating shaft, the bearing assembly comprising two bearings spaced apart in an axial direction of the rotating shaft and an end collar disposed between the two bearings.
10. The belt drive tensioner as claimed in any one of claims 1 to 6, wherein the rotating shaft includes a support portion and a connecting portion connected to each other, the bearing housing is fitted over the support portion, the connecting portion has an axial restraining surface at a top end thereof for supporting a bearing, the axial restraining surface is disposed around the support portion; the supporting part is provided with an axial limiting groove, the axial limiting groove is arranged along the whole circumferential extension of the supporting part, and a clamping ring part used for limiting the movement of the bearing is clamped in the axial limiting groove of the supporting part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920407163.XU CN209781591U (en) | 2019-03-28 | 2019-03-28 | tensioning device with transmission mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920407163.XU CN209781591U (en) | 2019-03-28 | 2019-03-28 | tensioning device with transmission mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN209781591U true CN209781591U (en) | 2019-12-13 |
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ID=68800115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920407163.XU Active CN209781591U (en) | 2019-03-28 | 2019-03-28 | tensioning device with transmission mechanism |
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| Country | Link |
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| CN (1) | CN209781591U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113417980A (en) * | 2021-05-31 | 2021-09-21 | 上海二十冶建设有限公司 | Tension adjusting device of belt transmission motor and mounting method |
-
2019
- 2019-03-28 CN CN201920407163.XU patent/CN209781591U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113417980A (en) * | 2021-05-31 | 2021-09-21 | 上海二十冶建设有限公司 | Tension adjusting device of belt transmission motor and mounting method |
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