CN116771869A - Tensioning device for endless rope traction transmission mechanism - Google Patents
Tensioning device for endless rope traction transmission mechanism Download PDFInfo
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- CN116771869A CN116771869A CN202311037424.0A CN202311037424A CN116771869A CN 116771869 A CN116771869 A CN 116771869A CN 202311037424 A CN202311037424 A CN 202311037424A CN 116771869 A CN116771869 A CN 116771869A
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Abstract
The invention relates to the technical field of endless rope traction transmission, and particularly discloses a tensioning device for an endless rope traction transmission mechanism, which comprises the following components: the device comprises a spring balancer, a tensioning traction steel wire rope, a tensioning guide wheel set, a tensioning slideway, a tensioning pulley and a mounting plate; the spring balancer, the tensioning guide wheel set and the tensioning slide way are respectively fixed on the mounting plate, a coil spring is arranged in the spring balancer, a tensioning wheel is arranged on the tensioning pulley, one end of the tensioning traction steel wire rope is fixed on the coil spring, the other end of the tensioning traction steel wire rope is connected with the tensioning pulley after being guided by the tensioning guide wheel set, and the tensioning pulley is movably arranged on the tensioning slide way, and the endless steel wire rope is wound on the tensioning wheel. The invention continuously loads the energy of the spring in the spring balancer to the tensioning pulley, so that the tension of the spring is balanced with the tension of the tensioning of the electrodeless steel wire rope, and then the constant tension and self-adaptive floating tensioning of the electrodeless steel wire rope are realized.
Description
Technical Field
The invention relates to the technical field of endless rope traction transmission, in particular to a tensioning device for an endless rope traction transmission mechanism.
Background
In order to solve the problems of high dangerous coefficient and poor inspection effect in manual inspection, an inspection robot pulled by an electrodeless steel wire rope is adopted in the prior art to effectively inspect a fully-mechanized coal mining working face. In the coal mining process, the coal mining machine, the scraper conveyor and the hydraulic support continuously advance and the roadway is fluctuated, the tracks of the fully mechanized mining working face in the horizontal and vertical directions are dynamically changed, so that the length of the towed endless steel wire rope is dynamically changed, and the endless steel wire rope is driven to continuously move by friction force in the endless steel wire rope transmission process, if the endless steel wire rope is not tensioned, effective friction is not generated, and the transmission is affected. In this regard, the prior art adopts the mode of weight tensioning, hydraulic tensioning to carry out tensioning to electrodeless wire rope. However, both weight tensioning and hydraulic tensioning require a certain operating space, which is obviously unsuitable for a very limited space inspection environment. The tensioning device for the endless rope traction transmission mechanism, which occupies small space, is significant.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides a tensioning device for an endless rope traction transmission mechanism.
The invention is realized in the following way:
a tensioning device for an endless rope traction drive mechanism for tensioning an endless wire rope, comprising: the device comprises a spring balancer, a tensioning traction steel wire rope, a tensioning guide wheel set, a tensioning slideway, a tensioning pulley and a mounting plate; the spring balancer, the tensioning guide wheel set and the tensioning slide way are respectively fixed on the mounting plate, a coil spring is arranged in the spring balancer, a tensioning wheel is arranged on the tensioning pulley, one end of the tensioning traction steel wire rope is fixed on the coil spring, the other end of the tensioning traction steel wire rope is connected with the tensioning pulley after being guided by the tensioning guide wheel set, and the tensioning pulley is movably arranged on the tensioning slide way, and the endless steel wire rope is wound on the tensioning wheel.
Preferably, the tensioning guide wheel set comprises: the guide wheel body is fixed on the guide wheel frame.
Further preferably, the guide wheel body includes: the guide wheel is rotatably connected with the guide wheel seat through the guide wheel shaft.
More preferably, the method further comprises: the guide wheel shaft sleeve, the check ring I for the hole, the deep groove ball bearing and the check ring for the shaft; two connecting lugs are oppositely arranged on the guide wheel seat, and the guide wheel shaft penetrates through the two connecting lugs and is positioned by a shaft retainer ring; the guide wheel shaft sleeve is sleeved outside the guide wheel shaft and is tightly attached to the inner ring of the deep groove ball bearing, and the deep groove ball bearing is axially pressed and matched with the inner cavity of the guide wheel along the guide wheel shaft and is positioned by the check ring I for the hole.
Preferably, the tensioning slide comprises: slide body, slide mount pad, slide bottom plate and slide limiting plate, two slide bodies are fixed in on the slide bottom plate relatively, and the slide bottom plate is fixed to be set up on the slide mount pad, and the slide limiting plate is fixed in the terminal of slide body.
Preferably, the tensioning pulley comprises: tensioning pulley, tensioning saddle and tensioning pulley axle, the tensioning pulley sets up in the one end of tensioning saddle, and the relative other end of tensioning saddle is provided with tensioning rings, and tensioning pulley axle sets up on tensioning saddle, and tensioning pulley sets up in tensioning pulley axle's both ends, and tensioning pulley passes through tensioning pulley and tensioning slide sliding connection.
Further preferably, the method further comprises: the tensioning lifting ring comprises a lifting ring body and a lifting bolt, wherein the lifting ring body is fixedly connected with the tensioning pulley seat, the tensioning lifting ring is fixedly connected with the lifting ring fixing block through the lifting bolt, a threaded hole is formed in the upper surface of the lifting ring fixing block, and the lifting bolt penetrates through the threaded hole to compress a screw rod of the lifting ring bolt.
Further preferably, the tension pulley includes: the rolling element, aligning ball bearing and hole check ring II for, the both ends of tensioning pulley axle are provided with the step face, aligning ball bearing installs in the rolling element inner chamber and through hole check ring II location, and the inner circle of aligning ball bearing is inserted respectively and is passed through step face axial positioning to tensioning pulley axle's both ends.
More preferably, the method further comprises: the tensioning pulley fixing seat I and the tensioning pulley fixing seat II are respectively provided with a semicircular groove for the tensioning pulley shaft to pass through on the opposite sides of the tensioning pulley fixing seat I and the tensioning pulley fixing seat II, the tensioning pulley fixing seat I is fixed on a tensioning pulley seat, and the tensioning pulley fixing seat II is fixed on the tensioning pulley fixing seat I.
Most preferably, the method further comprises: the tensioning wheel bearing seat is fixedly arranged on a tensioning saddle, the tensioning wheel shaft is fixedly connected with the tensioning wheel and can be rotatably arranged in the tensioning wheel bearing seat, and the tensioning wheel bearing seat is an outer spherical ball bearing.
The invention continuously loads the energy of the spring in the spring balancer to the tensioning pulley, so that the tension of the spring is balanced with the tension of the tensioning of the electrodeless steel wire rope, and then the constant tension and self-adaptive floating tensioning of the electrodeless steel wire rope are realized.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the tensioning guide wheel set of FIG. 1;
FIG. 3 is a cross-sectional view of the guide wheel body of FIG. 2;
FIG. 4 is a schematic view of the tensioning slide of FIG. 1;
FIG. 5 is a schematic view of the tensioning block of FIG. 1;
FIG. 6 is a second schematic view of the tensioning block of FIG. 1;
fig. 7 is a cross-sectional view of the tension pulley of fig. 5.
Wherein: 1. a spring balancer; 2. tensioning the traction wire rope; 3. tensioning a guide wheel set; 31. a guide wheel set frame; 32. a guide wheel body; 321. a guide wheel seat; 322. a guide wheel shaft; 323. a guide wheel shaft sleeve; 324. a retainer ring I for holes; 325. deep groove ball bearings; 326. a guide wheel; 327. a retainer ring for the shaft; 33. a set screw; 4. tensioning the slideway; 41. a slideway body; 42. a slideway mounting seat; 43. a slideway bottom plate; 44. a slide way limiting plate; 5. endless steel wire rope; 6. tensioning pulley; 61. tensioning the hanging ring; 62. a hanging ring fixing block; 63. a tensioning pulley; 631. a rolling element; 632. a self-aligning ball bearing; 633. a retainer ring II for holes; 64. tensioning the saddle; 65. a tensioning wheel; 66. a tensioning wheel bearing seat; 67. tensioning the wheel axle; 68. tensioning pulley fixing seat I; 69. tensioning pulley fixing seat II; 610. tensioning pulley shafts; 7. and (3) mounting a plate.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown collectively in fig. 1-7: a tensioning device for an endless rope traction transmission mechanism for tensioning an endless steel wire rope 5, comprising: the device comprises a spring balancer 1, a tensioning traction steel wire rope 2, a tensioning guide wheel set 3, a tensioning slideway 4, a tensioning pulley 6 and a mounting plate 7;
the spring balancer 1, the tensioning guide wheel set 3 and the tensioning slide way 4 are respectively fixed on the mounting plate 7, a coil spring is arranged in the spring balancer 1, a tensioning wheel 65 is arranged on the tensioning pulley 6, one end of the tensioning traction steel wire rope 2 is fixed on the coil spring, the other end of the tensioning traction steel wire rope is connected with the tensioning pulley 6 after being guided by the tensioning guide wheel set 3, the tensioning pulley 6 is movably arranged on the tensioning slide way 4, and the endless steel wire rope 5 is wound on the tensioning wheel 65.
The spring balancer 1 is the prior art, and the energy of the spring and the weight of the suspended articles are utilized to achieve force balance, so that an operator can walk the suspended articles up and down or stay at a certain position in the spring balancer easily with a small force, thereby being beneficial to saving labor time, improving working efficiency and saving working space. The present embodiment preferably employs Hebei Ai Puda lifting apparatus to manufacture EW-60, EW-80 spring balancers from Limited.
The invention is installed and fixed through the mounting plate 7, and a plurality of mounting holes are arranged on the mounting plate 7. Working principle: the energy of the springs in the spring balancer 1 is continuously loaded to the tensioning pulley 6 through the tensioning traction steel wire rope 2, and the tensioning pulley 6 is connected with the endless steel wire rope 5 through the tensioning wheel 65, so that the tension of the springs in the spring balancer 1 is balanced with the tension of the endless steel wire rope 5, and the constant tension and self-adaptive floating tensioning of the endless steel wire rope 5 are realized. Compared with the traditional heavy hammer tensioning and hydraulic tensioning, the hydraulic tensioning device has the advantages of simple and compact structure, small space occupation, simplicity in maintenance, economy and practicability.
The tensioning guide wheel set 3 is arranged between the spring balancer 1 and the tensioning pulley 6 and plays a role in guiding and bearing the tensioning traction steel wire rope 2. Illustratively, the tensioning guide wheel set 3 comprises: the guide wheel assembly comprises a guide wheel assembly frame 31 and a guide wheel body 32, wherein the guide wheel body 32 is used for guiding the tensioning traction steel wire rope 2, the guide wheel assembly frame 31 is fixedly connected with the guide wheel assembly frame 31 through a fixing screw 33, and the guide wheel assembly frame 31 is used for installing the guide wheel body 32 on one hand and realizing the fixed connection of the tensioning guide wheel assembly 3 and the mounting plate 7 on the other hand; of course, other existing fixing methods, such as welding, may be used for the fixing method.
On the basis of the above embodiment, the guide wheel body 32 includes: the guide wheel seat 321, the guide wheel shaft 322 and the guide wheel 326, the guide wheel 326 is rotatably connected with the guide wheel seat 321 through the guide wheel shaft 322.
Further, the method further comprises the steps of: a guide wheel sleeve 323, a hole retainer I324, a deep groove ball bearing 325 and a shaft retainer 327; two connecting lugs are oppositely arranged on the guide wheel seat 321, the guide wheel shaft 322 penetrates through the two connecting lugs, one end face of the guide wheel shaft 322 is tightly attached to the outer side of the lug of the guide wheel seat 321, and the other end of the guide wheel shaft is axially positioned through the shaft retainer ring 327; the guide wheel shaft sleeve 323 is sleeved outside the guide wheel shaft 322 and is tightly attached to the inner ring of the deep groove ball bearing 325, and the deep groove ball bearing 325 is axially press-fitted into the inner cavity of the guide wheel 326 along the guide wheel shaft 322 and is axially positioned through the hole retainer ring I324.
The tensioning slide 4 is used for providing linear guiding and bearing for the forward and backward movement of the tensioning trolley 6. Illustratively, the tensioning slide 4 includes: the two slide bodies 41 are relatively fixed on the slide bottom plate 43, the slide bottom plate 43 is fixedly arranged on the slide mounting seat 42, and the slide limiting plate 44 is fixed at the tail end of the slide body 41.
Specifically, the slideway body 41 is formed by processing a channel steel with a concave cross section of 5# and the slideway limiting plate 44 is welded at the tail end of the slideway body to prevent the tensioning pulley 6 from sliding out of the tensioning slideway 4; the slideway bottom plate 43 is formed by processing steel plates, the two slideway bodies 41 are welded on the slideway bottom plate 43 relatively, the slideway bottom plate 43 and the slideway mounting seat 42 can be welded, and the slideway mounting seat 42 can also be fixedly connected by adopting the existing fixing piece, so that the tensioning slideway 4 and the mounting plate 7 are fixedly connected.
The tensioning pulley 6 is used for realizing connection between the tensioning traction steel wire rope 2 and the endless steel wire rope 5. Illustratively, the tensioning trolley 6 comprises: the tensioning pulley 63, the tensioning pulley seat 64 and the tensioning pulley shaft 610, wherein the tensioning pulley 65 is arranged at one end of the tensioning pulley seat 64, the tensioning hanging ring 61 is arranged at the other end of the tensioning pulley seat 64 opposite to the tensioning pulley seat, the tensioning pulley shaft 610 is arranged on the tensioning pulley seat 64, and the tensioning pulley 63 is arranged at two ends of the tensioning pulley shaft 610; preferably, two tensioning pulley shafts 610 are arranged side by side, and one tensioning pulley 63 is arranged at each end of each tensioning pulley shaft 610. The tensioning pulley 6 slides on the tensioning slideway 4 linearly through the tensioning pulley 63, one end of the tensioning pulley 6 is connected with the tensioning traction steel wire rope 2 through the tensioning hanging ring 61, and the other end of the tensioning pulley 6 is connected with the endless steel wire rope 5 through the tensioning wheel 65, so that the tension of the spring in the spring balancer 1 and the tension of the endless steel wire rope 5 act on the tensioning pulley at the same time and achieve force balance.
Specifically, still include rings fixed block 62 and jack-up bolt, tensioning rings 61 is including being used for the rings body of being connected with tensioning traction wire rope 2 and being used for the rings bolt of being connected with tensioning rings 61 and rings fixed block 62, rings fixed block 62 is fixed in tensioning saddle 64 through the bolt on, rings bolt and rings fixed block 62 threaded connection, the upper surface of rings fixed block 62 is provided with the screw hole, jack-up bolt passes the screw rod that the screw hole compressed rings bolt in order to further consolidate the connection steadiness of rings bolt and rings fixed block 62, avoid the rings bolt pine to take off.
Specifically, the tension pulley 63 includes: the rolling body 631, the aligning ball bearing 632 and the hole retainer II 633 are provided with step surfaces at two ends of the tensioning pulley shaft 610, the aligning ball bearing 632 is installed in the inner cavity of the rolling body 631 and is positioned through the hole retainer II 633, two ends of the tensioning pulley shaft 610 are respectively inserted into the inner ring of the aligning ball bearing 632 and are axially positioned through the step surfaces, and therefore the central symmetry and the central distance dimension tolerance of the tensioning pulley 63 relative to the tensioning pulley seat 64 are ensured. The outer contour structure of the rolling body 631 is matched with the channel steel structure with the concave cross section of the No. 5, and the aligning ball bearing 632 is used for realizing the self-adaptive rolling of the tensioning pulley 6 in the tensioning slide 4, so that the blocking phenomenon is avoided.
Further, the method further comprises the steps of: the tensioning pulley fixing seat I68 and the tensioning pulley fixing seat II 69 are provided with semicircular grooves on the opposite surfaces of the tensioning pulley fixing seat I68 and the tensioning pulley fixing seat II 69, the tensioning pulley fixing seat I68 is fixed on the tensioning pulley seat 64, the tensioning pulley shaft 610 is placed into the semicircular grooves between the two tensioning pulley fixing seats I68 and II 69 which are oppositely arranged, and the tensioning pulley fixing seat II 69 is fixedly connected with the tensioning pulley fixing seat I68 through bolts, so that the tensioning pulley shaft 610 is pressed; moreover, the step surface of the tensioning pulley shaft 610 is simultaneously attached to the outer side surface of the tensioning pulley fixing seat I68, so that the central symmetry and the central distance dimension tolerance of the tensioning pulley 63 relative to the tensioning pulley seat 64 are further ensured.
Specifically, the method further comprises the steps of: tensioning wheel bearing seat 66 and tensioning wheel axle 67, tensioning wheel bearing seat 66 is fixed to be set up on tensioning saddle 64, tensioning wheel axle 67 and tensioning wheel 65 fixed connection just rotatable setting in tensioning wheel bearing seat 66, tensioning wheel bearing seat 66 is the ectosphere ball bearing. The tensioning wheel 65 is preferably formed by combining a steel structure hub and a polyurethane wheel bushing, the tensioning wheel shaft 67 and the tensioning wheel 65 are in clearance fit and positioning, then are fixedly connected through bolts, the upper part and the lower part of the tensioning wheel shaft 67 are respectively inserted into the inner ring of the tensioning wheel bearing seat 66, the tensioning wheel bearing seat 66 is fixed on the tensioning pulley seat 64 through bolts, and the tensioning wheel bearing seat 66 can adapt to the working condition of floating up and down when the electrodeless steel wire rope 5 works due to the aligning function of the spherical ball bearing.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium; may be a communication between two elements or an interaction between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present specification, the terms "one embodiment," "some embodiments," "examples," "particular examples," or "some examples," etc., refer to particular features, structures, materials, or characteristics described in connection with the embodiment or example as being included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that alterations, modifications, substitutions and variations may be made in the above embodiments by those skilled in the art within the scope of the invention.
Claims (10)
1. The tensioning device for the endless rope traction transmission mechanism is used for tensioning an endless steel wire rope (5), and is characterized in that: comprising the following steps: the device comprises a spring balancer (1), a tensioning traction steel wire rope (2), a tensioning guide wheel set (3), a tensioning slideway (4), a tensioning pulley (6) and a mounting plate (7);
the spring balancer (1), the tensioning guide wheel set (3) and the tensioning slide way (4) are respectively fixed on the mounting plate (7), coil springs are arranged in the spring balancer (1), tensioning pulleys (6) are provided with tensioning wheels (65), one ends of tensioning traction steel wire ropes (2) are fixed on the coil springs, the other ends of the tensioning traction steel wire ropes are connected with the tensioning pulleys (6) after being guided by the tensioning guide wheel set (3), the tensioning pulleys (6) are movably arranged on the tensioning slide way (4), and the endless steel wire ropes (5) are wound on the tensioning wheels (65).
2. The tensioner for an endless rope traction drive as recited in claim 1, wherein: the tensioning guide wheel set (3) comprises: the guide wheel assembly comprises a guide wheel assembly frame (31) and a guide wheel body (32), wherein the guide wheel body (32) is fixed on the guide wheel assembly frame (31).
3. The tensioning device for an endless rope traction drive as recited in claim 2 wherein: the guide wheel body (32) includes: the guide wheel seat (321), the guide wheel shaft (322) and the guide wheel (326), wherein the guide wheel (326) is rotatably connected with the guide wheel seat (321) through the guide wheel shaft (322).
4. A tensioner for endless rope traction means as claimed in claim 3, wherein: further comprises: a guide wheel shaft sleeve (323), a check ring I (324) for holes, a deep groove ball bearing (325) and a check ring (327) for shafts;
two connecting lugs are oppositely arranged on the guide wheel seat (321), and a guide wheel shaft (322) penetrates through the two connecting lugs and is positioned through a shaft retainer ring (327);
the guide wheel shaft sleeve (323) is sleeved outside the guide wheel shaft (322) and is tightly attached to the inner ring of the deep groove ball bearing (325), and the deep groove ball bearing (325) is axially pressed and matched with the inner cavity of the guide wheel (326) along the guide wheel shaft (322) and is positioned by the check ring I (324) for the hole.
5. The tensioner for an endless rope traction drive as recited in claim 1, wherein: the tensioning slide (4) comprises: slide body (41), slide mount pad (42), slide bottom plate (43) and slide limiting plate (44), two slide bodies (41) are fixed in slide bottom plate (43) relatively, and slide bottom plate (43) are fixed to be set up on slide mount pad (42), and slide limiting plate (44) are fixed in the terminal of slide body (41).
6. The tensioner for an endless rope traction drive as recited in claim 1, wherein: the tensioning pulley (6) comprises: tensioning pulley (63), tensioning pulley seat (64) and tensioning pulley shaft (610), tensioning pulley (65) set up in tensioning pulley seat (64) one end, tensioning pulley seat (64) opposite other end is provided with tensioning rings (61), tensioning pulley shaft (610) set up on tensioning pulley seat (64), tensioning pulley (63) set up in tensioning pulley shaft (610) both ends, tensioning pulley (6) are through tensioning pulley (63) and tensioning slide (4) sliding connection.
7. The tensioner for an endless rope traction drive as recited in claim 6, wherein: further comprises: lifting ring fixed block (62) and jack bolt, tensioning lifting ring (61) include lifting ring body and jack bolt, and lifting ring fixed block (62) and tensioning saddle (64) fixed connection, tensioning lifting ring (61) are passed through jack bolt and lifting ring fixed block (62) fixed connection, the upper surface of lifting ring fixed block (62) is provided with the screw hole, jack bolt passes the screw hole compresses tightly the screw rod of jack bolt.
8. The tensioner for an endless rope traction drive as recited in claim 7, wherein: the tensioning pulley (63) comprises: the self-aligning device comprises a rolling body (631), a self-aligning ball bearing (632) and a hole retainer ring II (633), wherein step surfaces are arranged at two ends of a tensioning pulley shaft (610), the self-aligning ball bearing (632) is installed in an inner cavity of the rolling body (631) and is positioned through the hole retainer ring II (633), and two ends of the tensioning pulley shaft (610) are respectively inserted into an inner ring of the self-aligning ball bearing (632) and are axially positioned through the step surfaces.
9. The tensioner for an endless rope traction drive as recited in claim 8, wherein: further comprises: the tensioning pulley fixing seat I (68) and the tensioning pulley fixing seat II (69), semicircular grooves for the tensioning pulley shaft (610) to pass through are formed in the opposite faces of the tensioning pulley fixing seat I (68) and the tensioning pulley fixing seat II (69), the tensioning pulley fixing seat I (68) is fixed on the tensioning pulley seat (64), and the tensioning pulley fixing seat II (69) is fixed on the tensioning pulley fixing seat I (68).
10. The tensioner for an endless rope traction drive as recited in claim 6, wherein: further comprises: tensioning wheel bearing frame (66) and tensioning shaft (67), tensioning wheel bearing frame (66) are fixed to be set up on tensioning saddle (64), tensioning shaft (67) and tensioning wheel (65) fixed connection just rotatable set up in tensioning wheel bearing frame (66), and tensioning wheel bearing frame (66) are outer spherical ball bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202311037424.0A CN116771869B (en) | 2023-08-17 | 2023-08-17 | Tensioning device for endless rope traction transmission mechanism |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311037424.0A CN116771869B (en) | 2023-08-17 | 2023-08-17 | Tensioning device for endless rope traction transmission mechanism |
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| CN116771869A true CN116771869A (en) | 2023-09-19 |
| CN116771869B CN116771869B (en) | 2023-10-20 |
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