Traction machine

Abstract

The invention discloses a traction machine, which belongs to the technical field of elevators, and comprises a supporting main body, a bearing and a traction wheel axle, the supporting main body comprises a first supporting seat, a second supporting seat, a first supporting beam, a second supporting beam and a third supporting beam, and the two ends of the traction wheel axle are respectively mounted on the first supporting seat and the second supporting seat; the traction wheel shaft is rotationally connected with the first supporting seat and the second supporting seat through bearings; the two ends of the first supporting beam, the second supporting beam and the third supporting beam are fixed to the first supporting base and the second supporting base respectively, and the upper end face of the third supporting beam is sunken downwards to form an oil containing groove. The outer wall of the traction wheel shaft is provided with an oil separation groove, the oil separation groove extends in the circumferential direction of the traction wheel shaft, the oil separation groove is close to the bearing, and the oil separation groove is formed above the oil containing groove. The oil separating groove prevents grease from flowing into the brake disc and the traction rope, the oil containing groove collects oil leaked from the bearing, the deposited grease is not prone to volatilizing in the oil containing groove, and maintenance personnel can maintain the traction machine at regular intervals.

Description

Technical Field

[0001] The present invention relates to the technical field of elevators, and particularly to a traction machine. Background Art

[0002] A permanent magnet synchronous traction machine, also known as a non-reduction gearbox drive, is used to be installed in an elevator machine room or an elevator hoistway, generally above the top floor of a building or inside the hoistway, and is the power system of the elevator. The permanent magnet synchronous traction machine drives the traction wheel shaft to rotate by a rotor structure and has no reduction gearbox device. With the rapid development of the elevator market, the application volume of permanent magnet synchronous traction machines is increasing, accounting for more than 70% of all elevator traction machines.

[0003] At present, most traction machines in the industry have deficiencies in the anti-oil leakage structure design and structural matching. During the long-term operation of the main shaft, there is a high risk of oil leakage, and the leaked grease will flow onto the brake disc and the traction rope. Once there is oil on the braking surface of the brake disc, the braking torque will be insufficient, posing a serious safety hazard to the operation of the traction machine. During the operation of the elevator, the traction rope needs to rely on the friction force between it and the rope groove of the traction wheel to lift the car. If grease flows onto the traction rope on the traction wheel shaft, the oil on the surface of the traction rope will reduce the friction force, causing the traction rope to slip on the circumference of the traction wheel, and in severe cases, even causing the elevator to run away. Summary of the Invention

[0004] The purpose of the present invention is to improve the problem of relatively high production cost of the motor in the existing escalator, and to provide a traction machine.

[0005] The technical solutions for achieving the above purpose include the following:

[0006] A traction machine, comprising a support main body, bearings, and a traction wheel shaft. The support main body includes a first support seat, a second support seat, and a third support beam. The two ends of the traction wheel shaft are respectively installed on the first support seat and the second support seat, and the traction wheel shaft is rotationally connected to the first support seat and the second support seat through bearings;

[0007] The two ends of the third support beam are respectively fixed to the first support seat and the second support seat, and the third support beam is arranged at the bottom of the first support seat and the second support seat. The third support beam is arranged close to the outer edge of the bearing, and the upper end surface of the third support beam is recessed downward to form an oil storage groove;

[0008] The outer wall of the traction wheel shaft has an oil separation groove, which extends along the circumferential direction of the traction wheel shaft. The oil separation groove is arranged close to the bearing and is arranged above the oil storage groove.

[0009] In one embodiment, the third support beam has a first oil-receiving surface and a second oil-receiving surface. The first oil-receiving surface and the second oil-receiving surface are disposed on the upper end surface of the third support beam. An oil-receiving groove is formed between the first oil-receiving surface and the second oil-receiving surface, and the angle between the first oil-receiving surface and the second oil-receiving surface is an obtuse angle.

[0010] In one embodiment, the traction machine further has two felts, and the two felts are installed at both ends of the bearing;

[0011] The number of the oil separation grooves is at least two. The two oil separation grooves are disposed at both ends of the bearing, and the felts are located between the oil separation grooves and the bearing.

[0012] In one embodiment, the traction machine further has a brake disc and a brake. The outer wall of the traction wheel shaft has a plurality of rope grooves, and the rope grooves extend along the circumferential direction of the traction wheel shaft. The plurality of rope grooves are disposed near the middle section of the traction wheel shaft;

[0013] The brake disc is installed at the first end of the traction wheel shaft, the brake is installed on the first support seat, and the brake cooperates with the brake disc;

[0014] One of the oil separation grooves is disposed between the brake disc and the bearing, and the other oil separation groove is disposed between the bearing and the rope groove.

[0015] In one embodiment, the traction machine further has a rotor structure, a stator structure, a first housing, and a second housing. The first housing is installed on the side wall of the first support seat, and the brake is located inside the first housing; the second housing is installed on the side wall of the second support seat, and the first housing and the second housing are disposed opposite to each other;

[0016] The rotor structure is installed at the second end of the traction wheel shaft, the stator structure is installed on the second support seat and is located inside the second housing, and the rotor structure and the stator structure are rotationally matched;

[0017] Both the first housing and the second housing include a first plate and four second plates. The first ends of the four second plates are respectively installed on the four side edges of the first plate, and the second ends of the four second plates are installed on the side walls of the first support seat or the second support seat. A chamber is formed between the first plate, the inner sides of the four second plates, and the first support seat;

[0018] The first plate has a plurality of first rib strips and second rib strips. The first rib strips extend along the width direction of the first plate, and the second rib strips extend along the length direction of the first plate;

[0019] The plurality of first rib strips and the plurality of second rib strips are distributed in a crisscross manner and form a plurality of sound absorption areas.

[0020] In one embodiment, the second plate has at least one third rib, the third rib is arranged parallel to the first rib, and the third rib is arranged staggeredly with the first rib.

[0021] In one embodiment, the traction machine further has a protection structure, and the protection structure includes two first protection plates and a second protection plate. The two first protection plates are installed on both sides of the support body, and the two first protection plates are respectively located on both sides of the traction wheel shaft. The second protection plate is installed at the upper end of the support body;

[0022] The first protection plate is in a bent shape, the first protection plate has at least one bending point, the traction wheel shaft has a traction end, and the bending point is arranged close to the traction end.

[0023] In one embodiment, the first protection plate includes a first baffle and a second baffle. The first end of the first baffle is connected to the second baffle. The first baffle and the second baffle form a bent structure. A first fold angle is formed between the first baffle and the second baffle, and the opening direction of the first fold angle faces away from the traction end;

[0024] The degree of the first fold angle is 30 degrees to 70 degrees.

[0025] In one embodiment, the first protection plate further includes a third baffle. The second end of the third baffle is connected to the second baffle. A second fold angle is formed between the third baffle and the second baffle, and the opening direction of the second fold angle is opposite to the opening direction of the first fold angle;

[0026] The degree of the second fold angle is greater than the degree of the first fold angle.

[0027] In one embodiment, fixing plates are arranged at both ends of the first baffle and the second baffle. The fixing plates are provided with mounting holes through which fasteners pass, so that both ends of the first baffle and the second baffle are fixed on the first support seat and the second support seat through the fasteners.

[0028] The technical solution provided by the present invention has the following advantages and effects:

[0029] On the one hand, an oil separation groove is provided on the outer wall of the traction wheel shaft. This oil separation groove is arranged at the end close to the bearing. Brake discs and traction ropes are provided at both ends of the traction wheel shaft. Therefore, when the bearing leaks oil, the grease flows along the outer wall of the traction wheel shaft to the oil separation groove, and the oil separation groove isolates the grease, preventing the grease from flowing into the brake discs and the traction ropes. Moreover, centrifugal force will be generated during the rotation of the traction wheel shaft, and this centrifugal force throws out the oil, further preventing the grease from flowing onto the brake discs and the traction ropes.

[0030] On the other hand, the third support beam is arranged at the bottoms of the first support base and the second support base, and the third support beam is arranged close to the outer edge of the bearing. The oil separation groove is arranged above the oil storage groove of the third support beam. The oil in the oil separation groove will drip into the oil storage groove, and the oil storage groove collects the oil leaked from the bearing. Grease accumulates in the oil storage groove. Within a certain period of time, the deposited grease is not easy to volatilize in the oil storage groove. Maintenance personnel can regularly inspect the traction machine and timely detect whether there is any oil leakage in the bearing of the traction machine. When there is a relatively serious oil leakage in the bearing, maintenance personnel can timely repair the traction machine to avoid affecting the normal operation of the equipment. Description of the Drawings

[0031] The drawings herein show specific examples of the technical solutions of the present invention and form a part of the description together with the specific implementation manners, and are used to explain the technical solutions, principles and effects of the present invention.

[0032] Unless otherwise specified or defined, in different drawings, the same reference numerals represent the same or similar technical features, and for the same or similar technical features, different reference numerals may also be used for representation.

[0033] Figure 1 is a schematic diagram of a traction machine in an embodiment of the present invention;

[0034] Figure 2 is a cross-section of a traction machine in an embodiment of the present invention Figure 1 ;

[0035] Figure 3 is a cross-section of a traction machine in an embodiment of the present invention Figure 2 ;

[0036] Figure 4 is an enlarged view of part A in an embodiment of the present invention Figure 2 ;

[0037] Figure 5 is an enlarged view of part B in an embodiment of the present invention Figure 3 ;

[0038] Figure 6 is a schematic structural diagram of a first protective plate in an embodiment of the present invention;

[0039] Figure 7 is a side view of a first protective plate in an embodiment of the present invention;

[0040] Figure 8 is a schematic diagram of a first housing or a second housing in an embodiment of the present invention;

[0041] Description of the Reference Numerals:

[0042] 100, Traction machine; 1, Support main body; 11, First support base; 12, Second support base; 13, First outer shell; 131, First plate; 132, Second plate; 133, First rib; 134, Second rib; 135, Sound absorption area; 136, Third rib; 14, Second outer shell; 15, First support beam; 16, Second support beam; 17, Third support beam; 171, First oil receiving surface; 172, Second oil receiving surface; 21, Felt; 22, Oil separation groove; 23, Oil storage groove; 31, Brake disc; 32, Traction rope; 33, Traction end; 4, Bearing; 5, Traction wheel shaft; 51, Rope groove; 6, Protection structure; 61, First protection plate; 611, First baffle; 612, Second baffle; 613, Third baffle; 614, Fixed plate; 615, Bending point; 616, First folding angle; 617, Second folding angle; 62, Second protection plate; 7, Brake; 8, Rotor structure; 9, Stator structure. Detailed implementation manners

[0043] For the convenience of understanding the present invention, the specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings of the specification.

[0044] Unless otherwise specified or defined, the "first, second..." used herein is only for distinguishing names and does not represent a specific quantity or order.

[0045] Unless otherwise specified or defined, the term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0046] It should be noted that when an element is considered to be "fixed to" another element, it can be directly fixed to the other element or there can be an intermediate element; when an element is considered to be "connected to" another element, it can be directly connected to the other element or there can be an intermediate element at the same time; when an element is considered to be "mounted on" another element, it can be directly mounted on the other element or there can be an intermediate element at the same time. When an element is considered to be "provided in" another element, it can be directly provided in the other element or there can be an intermediate element at the same time.

[0047] The present invention provides a traction machine 100, as Figures 1 to 5As shown in the figure, it includes a support body 1, a bearing 4, and a traction wheel shaft 5. The support body 1 includes a first support seat 11, a second support seat 12, a first support beam 15, a second support beam 16, and a third support beam 17. Both ends of the traction wheel shaft 5 are respectively installed on the first support seat 11 and the second support seat 12, and the traction wheel shaft 5 is rotatably connected to the first support seat 11 and the second support seat 12 through the bearing 4. Both ends of the first support beam 15, the second support beam 16, and the third support beam 17 are respectively fixed to the first support seat 11 and the second support seat 12. The first support beam 15 and the second support beam 16 are arranged above the traction wheel shaft 5, and the third support beam 17 is arranged at the bottom of the first support seat 11 and the second support seat 12. The third support beam 17 is arranged close to the outer edge of the bearing 4. The upper end face of the third support beam 17 is recessed downward to form an oil storage groove 23. The outer wall of the traction wheel shaft 5 has an oil separation groove 22, and the oil separation groove 22 extends along the circumferential direction of the traction wheel shaft 5. The oil separation groove 22 is arranged close to the bearing 4 and is arranged above the oil storage groove 23.

[0048] Specifically, the first support seat 11 and the second support seat 12 are used to support both ends of the traction wheel shaft 5, so that the traction wheel shaft 5 can rotate stably on the support body 1 through the bearing 4. The tops of the first support seat 11 and the second support seat 12 are fixed by the first support beam 15 and the second support beam 16, and the bottoms of the first support seat 11 and the second support seat 12 are fixed by the third support beam 17, which increases the torsional resistance of the support body 1 and improves the stability of the overall structure of the support body 1. When hoisting the traction machine 100, the first support beam 15 and the second support beam 16 can also be the load-bearing parts, which is convenient for hoisting and transporting the traction machine 100.

[0049] Furthermore, on the one hand, the outer wall of the traction wheel shaft 5 has an oil separation groove 22, and this oil separation groove 22 is arranged close to the end of the bearing 4. Both ends of the traction wheel shaft 5 have a brake disc 31 and a traction rope 32. Therefore, when the bearing 4 has an oil leakage phenomenon, the grease flows along the outer wall of the traction wheel shaft 5 to the oil separation groove 22, and the oil separation groove 22 isolates the grease to prevent the grease from flowing into the brake disc 31 and the traction rope 32. Moreover, the traction wheel shaft 5 will generate centrifugal force during rotation, and this centrifugal force will throw the oil out, further preventing the grease from flowing onto the brake disc 31 and the traction rope 32.

[0050] On the other hand, the third support beam 17 is disposed at the bottoms of the first support base 11 and the second support base 12, and the third support beam 17 is disposed close to the outer edge of the bearing 4. The oil separation groove 22 is disposed above the oil storage groove 23 of the third support beam 17. The oil in the oil separation groove 22 will drip into the oil storage groove 23. The oil storage groove 23 collects the oil leaked from the bearing 4. The grease accumulates in the oil storage groove 23. Within a certain period of time, the deposited grease is not easily volatilized in the oil storage groove 23. The maintenance personnel can regularly inspect the traction machine 100 and timely detect whether there is an oil leakage phenomenon in the bearing 4 of the traction machine 100. When the bearing 4 has a relatively serious oil leakage phenomenon, the maintenance personnel can timely repair the traction machine 100 to avoid affecting the normal operation of the equipment.

[0051] Preferably, as Figure 5 shown, the third support beam 17 has a first oil receiving surface 171 and a second oil receiving surface 172. The first oil receiving surface 171 and the second oil receiving surface 171 are disposed on the upper end surface of the third support beam 17. An oil storage groove 23 is formed between the first oil receiving surface 171 and the second oil receiving surface 172. The angle between the first oil receiving surface 171 and the second oil receiving surface 172 is an obtuse angle.

[0052] Specifically, the first oil receiving surface 171 faces the first traction end of the traction wheel shaft 5, and the second oil receiving surface 172 faces the second traction end of the traction wheel shaft 5. When the traction wheel shaft 5 rotates, a centrifugal force will be generated. According to the self-weight of the oil and the centrifugal force at the traction end, the oil in the oil separation groove 22 generally splashes at the traction end of the traction wheel shaft 5. When the traction wheel shaft 5 rotates clockwise, the oil splashed from the oil separation groove 22 at its second traction end falls onto the second oil receiving surface 172; when the traction wheel shaft 5 rotates counterclockwise, the oil splashed from the oil separation groove 22 at its first traction end falls onto the first oil receiving surface 171. Since the angle between the first oil receiving surface 171 and the second oil receiving surface 172 is an obtuse angle, therefore, the unfolded surface of the upper end surface of the third support beam 17 is increased as much as possible, the receiving area of the oil storage groove 23 is increased, and at the same time, it also meets the design requirements of the support strength of the third support beam 17. Moreover, the oil on the first oil receiving surface 171 and the second oil receiving surface 172 will also flow into the oil storage groove 23 to achieve the collection of the grease splashed from the oil separation groove 22.

[0053] Preferably, the traction machine 100 further has two felts 21, and the two felts 21 are installed at both ends of the bearing 4; the number of the oil separation grooves 22 is at least two, the two oil separation grooves 22 are disposed at both ends of the bearing 4, and the felt 21 is located between the oil separation groove 22 and the bearing 4.

[0054] Specifically, the bearing 4 has a self-structured oil seal, which provides the first seal for the interior of the bearing 4. Felt 21 is provided at both ends of the bearing 4, which provides the second seal for both ends of the bearing 4, further preventing oil leakage from the bearing 4. Even if oil leakage occurs in the bearing 4, the grease can be isolated by the oil separation groove 22, preventing the grease from spreading along the outer wall of the traction wheel shaft 5.

[0055] Preferably, the traction machine 100 further includes a brake disc 31 and a brake 7. The outer wall of the traction wheel shaft 5 has a plurality of rope grooves 51, which extend circumferentially along the traction wheel shaft 5. The plurality of rope grooves 51 are arranged close to the middle section of the traction wheel shaft 5. The brake disc 31 is installed at the first end of the traction wheel shaft 5, and the brake 7 is installed on the first support seat 11. The brake 7 cooperates with the brake disc 31. One of the oil separation grooves 22 is provided between the brake disc 31 and the bearing 4, and the other oil separation groove 22 is provided between the bearing 4 and the rope groove 51.

[0056] Specifically, the brake 7 is used to cooperate with the brake disc 31 to achieve emergency braking of the traction wheel shaft 5. One of the oil separation grooves 22 is provided between the bearing 4 and the brake disc 31, and the oil separation groove 22 is used to prevent the grease of the bearing 4 from flowing onto the braking surface of the brake disc 31, avoiding affecting the braking torque of the brake disc 31 and preventing serious safety hazards to the operation of the traction machine 100. The traction rope 32 is used to wind around the rope groove 51 of the traction wheel shaft 5, and the traction rope 32 is used to tow the car. The other oil separation groove 22 is provided between the bearing 4 and the rope groove 51, and the oil separation groove 22 is used to prevent the grease of the bearing 4 from flowing into the rope groove 51, isolating the grease from contacting the traction rope 32, avoiding the traction rope 32 from slipping on the traction wheel shaft 5, and preventing the phenomenon of the elevator slipping.

[0057] Preferably, the traction machine 100 further includes a rotor structure 8, a stator structure 9, a first housing 13, and a second housing 14. The first housing 13 is installed on the side wall of the first support seat 11, and the brake 7 is located inside the first housing 13. The second housing 14 is installed on the side wall of the second support seat 12, and the first housing 13 and the second housing 14 are arranged opposite to each other. The rotor structure 8 is installed at the second end of the traction wheel shaft 5, and the stator structure 9 is installed on the second support seat 12 and is located inside the second housing 14. The rotor structure 8 and the stator structure 9 are rotationally matched.

[0058] Specifically, the brake 7 and the brake disc 31 are configured to be accommodated within the first housing 13 to prevent the external environment from affecting the cooperation between the brake 7 and the brake disc 31; the rotor structure 8 and the stator structure 9 are accommodated within the second housing 14 to prevent the external environment from affecting the cooperation between the stator structure 9 and the rotor structure 8. Moreover, the first housing 13 and the second housing 14 are disposed opposite to each other. Therefore, the brake disc 31, the rope groove 51, and the rotor structure 8 are sequentially distributed in the axial direction of the traction wheel shaft 5, rationally utilizing the traction wheel shaft 5 to support each component and improving the compactness of each component on the traction machine 100.

[0059] In some embodiments, as Figure 8 shown, both the first housing 13 and the second housing 14 include a first plate 131 and four second plates 132. The first ends of the four second plates 132 are respectively mounted on the four side edges of the first plate 131, and the second ends of the four second plates 132 are mounted on the side walls of the first support base 11 or the second support base 12. A cavity is formed among the first plate 131, the inner sides of the four second plates 132, and the first support base 11; the first plate 131 has a plurality of first rib strips 133 and second rib strips 134. The first rib strips 133 extend along the width direction of the first plate 131, and the second rib strips 134 extend along the length direction of the first plate 131; the plurality of first rib strips 133 and the plurality of second rib strips 134 are distributed in a crisscross pattern and form a plurality of sound absorption areas 135.

[0060] Specifically, the first housing 13 or the second housing 14 is mounted on the support body 1 of the traction machine 100. When the traction machine 100 is operating, the traction wheel shaft 5 rotates and vibrates on the support body 1, and the vibration generates low-frequency noise that is transmitted into the cavity of the first housing 13 or the second housing 14; and the first plate 131 has a plurality of first rib strips 133 and second rib strips 134, and the plurality of first rib strips 133 and the plurality of second rib strips 134 are distributed in a crisscross pattern and form a plurality of sound absorption areas 135. The plurality of sound absorption areas 135 are used to isolate and differentiate the sound waves in the cavity to prevent the sound waves in the cavity from being superimposed. The plurality of sound absorption areas 135 will prevent the sound waves from resonating in the cavity, thereby reducing the noise of the noise source by 5% to 15%.

[0061] Preferably, as Figure 8As shown, the second plate 132 has at least one third rib 136, the third rib 136 is arranged in parallel with the first rib 133, and the third rib 136 is staggered with the first rib 133. Specifically, the third rib 136 is used to increase the structural strength of the second plate 132, improve the stability of the first shell 13 or the second shell 14, the third rib 136 is staggered with the first rib 133, and the third rib 136 and the inner wall of the second plate 132 form an area that can further differentiate the sound waves, further avoid the superposition of the sound waves of the first shell 13 or the second shell 14, and improve the noise reduction effect. Therefore, in this embodiment, the first shell 13 and the second shell 14 have a certain noise reduction function, reducing the impact of the traction machine 100 on the surrounding environment.

[0062] In some embodiments, Figure 3 , Figure 6 , Figure 7 As shown, the traction machine 100 also has a protective structure 6, which includes two first protective plates 61 and a second protective plate 62. The two first protective plates 61 are installed on both sides of the support body 1, and the two first protective plates 61 are respectively located on both sides of the traction wheel shaft 5, and the second protective plate 62 is installed on the upper end of the support body 1; the first protective plate 61 is bent, and the first protective plate 61 has at least one bending point 615, the traction wheel shaft 5 has a traction end 33, and the bending point 615 is arranged close to the traction end 33.

[0063] Specifically, two first protective plates 61 are arranged on both sides of the traction wheel shaft 5, and the first protective plates 61 are bent. The structure of the bent first protective plates 61 is enhanced. The first protective plates 61 are preferably steel plates. The enhancement is mainly due to the plastic deformation of the steel plates during the bending process, which leads to the reorganization of their internal crystal structure and forms a tighter arrangement, thereby improving the strength and hardness of the steel plates. In addition, the bending process can also improve the toughness and ductility of the steel plates, making them more durable when subjected to external forces, thereby improving the protective performance of the protective structure 6.

[0064] Moreover, the bending point 615 of the first protective plate 61 is close to the traction end 33 . In the present embodiment, the traction end 33 is the tangent point between the traction wheel shaft 5 and the traction rope 32 .

[0065] Since the traction rope 32 generally breaks at the traction end 33, the destructive force of the traction end 33 is the greatest, and the structural strength of the first protective plate 61 after bending is the greatest at its bending point 615. The bending point 615 of the first protective plate 61 can fully withstand the reaction force generated after the traction rope 32 breaks at the traction end 33. The first protective plate 61 absorbs the reaction force to prevent the broken traction rope 32 from damaging the first protective plate 61 and also to prevent the broken traction rope 32 from damaging other components of the traction machine 100.

[0066] In addition, a second protective plate 62 is provided at the upper end of the support body 1 and is located above the traction wheel shaft 5. The second protective plate 62 has a shielding function. The two first protective plates 61 and the second protective plate 62 protect the top and both sides of the traction wheel shaft 5 to prevent external debris from falling onto the traction wheel shaft 5 and prevent the debris from interfering with the traction of the traction rope 32.

[0067] Preferably, Figure 6 and Figure 7 As shown, the first protective plate 61 includes a first baffle plate 611 and a second baffle plate 612. The first end of the first baffle plate 611 is connected to the second baffle plate 612. The first baffle plate 611 and the second baffle plate 612 form a bending structure. A first fold angle 616 is formed between the first baffle plate 611 and the second baffle plate 612. The opening direction of the first fold angle 616 is away from the traction end 33.

[0068] Specifically, a first angle 616 is formed between the first baffle 611 and the second baffle 612, and the first angle 616 is less than 90 degrees. The first baffle 611 and the second baffle 612 can be an integrated structure, and a bending structure is formed by subsequent bending processing. Moreover, the bending angle has a direct impact on the strength. As the bending angle increases, the stress on the steel will gradually increase. When the bending angle reaches a certain value, the steel may exceed its yield point, resulting in obvious plastic deformation or even damage, thereby reducing the strength of the steel. Therefore, the first angle 616 formed between the first baffle 611 and the second baffle 612 can avoid excessive bending angles, improve its strength and avoid damaging the first protective plate 61.

[0069] Moreover, the degree of the first fold angle 616 is 30 degrees to 70 degrees. Through experimental tests, and in order to make the first protective plate 61 have a certain deployment area, the protection area of the first protective plate 61 on the side of the traction wheel shaft 5 is increased as much as possible. In this embodiment, the first fold angle 616 is set to 50 degrees, which can take into account both the protection area and protection performance of the first protective plate 61.

[0070] Preferably, the first protective plate 61 further includes a third baffle 613. The third baffle 613 is connected to the second end of the second baffle 612. A second fold angle 617 is formed between the third baffle 613 and the second baffle 612. The opening direction of the second fold angle 617 is opposite to the opening direction of the first fold angle 616. Specifically, in order to further increase the protective area of the first protective plate 61, the third baffle 613 is connected to the second baffle 612. A Z-shaped blocking structure is formed among the first baffle 611, the second baffle 612, and the third baffle 613. The third baffle 613 can further increase the protective area of the first protective plate 61. Moreover, a second fold angle 617 is formed between the third baffle 613 and the second baffle 612, and the second fold angle 617 is also less than 90 degrees, further increasing the structural strength of the first protective plate 61.

[0071] Further, the degree of the second fold angle 617 is greater than the degree of the first fold angle 616. This can increase the unfolded area between the third baffle 613 and the second baffle 612, and further improve the protective area of the two first protective plates 61.

[0072] Preferably, as Figure 6 and Figure 7 shown, fixing plates 614 are provided at both ends of the first baffle 611 and the second baffle 612. The fixing plates 614 are provided with mounting holes through which fasteners pass, so that both ends of the first baffle 611 and the second baffle 612 are fixed to the first support seat 11 and the second support seat 12 by the fasteners. Specifically, the first baffle 611 and the second baffle 612 are fixed through the fixing plates 614 at both ends. The fixing plates 614 have mounting holes through which the first ends of the fasteners pass, so that the first protective plate 61 is fixed to the support main body 1 by the fasteners, improving the structural stability between the first protective plate 61 and the support main body 1.

[0073] When referring to the drawings, new features that appear are described. To avoid the description from being less concise due to repeated reference to the drawings, features that have been described clearly will not be referred to in the drawings one by one.

[0074] The purpose of the above embodiments is to exemplarily reproduce and deduce the technical solutions of the present invention, and to completely describe the technical solutions, purposes, and effects of the present invention. The purpose is to make the public understand the disclosed content of the present invention more thoroughly and comprehensively, and does not limit the protection scope of the present invention thereby.

[0075] The above embodiments are not exhaustive listings based on the present invention. Besides, there may be multiple other embodiments not listed. Any substitution and improvement made on the basis of not violating the concept of the present invention fall within the protection scope of the present invention.

Claims

1. A traction machine, characterized in that, It includes a support body, a bearing, and a traction wheel shaft. The support body includes a first support seat, a second support seat, and a third support beam. The two ends of the traction wheel shaft are respectively installed on the first support seat and the second support seat, and the traction wheel shaft is rotatably connected with the first support seat and the second support seat through the bearing; The two ends of the third support beam are respectively fixed to the first support seat and the second support seat, and the third support beam is arranged at the bottom of the first support seat and the second support seat, and the third support beam is arranged close to the outer edge of the bearing, and the upper end surface of the third support beam is concave downward to form an oil containing groove; The outer wall of the traction wheel shaft is provided with an oil separation groove, the oil separation groove is extended along the circumference of the traction wheel shaft, the oil separation groove is arranged close to the bearing, and the oil separation groove is arranged above the oil containing groove.

2. The traction machine according to claim 1, wherein The third support beam has a first oil receiving surface and a second oil receiving surface. The first oil receiving surface and the second oil receiving surface are arranged on the upper end surface of the third support beam. The oil containing groove is formed between the first oil receiving surface and the second oil receiving surface. The angle between the first oil receiving surface and the second oil receiving surface is an obtuse angle.

3. The traction machine according to claim 1, wherein, The traction machine also has two felts, which are installed at both ends of the bearing; There are at least two oil separation grooves, which are arranged at two ends of the bearing, and the felt is located between the oil separation groove and the bearing.

4. The traction machine according to claim 3, characterized in that, The traction machine also has a brake disc and a brake, and the outer wall of the traction wheel shaft has a plurality of rope grooves, the rope grooves are arranged extending along the circumference of the traction wheel shaft, and the plurality of rope grooves are arranged near the middle section of the traction wheel shaft; The brake disc is mounted on the first end of the traction sheave shaft, the brake is mounted on the first support seat, and the brake cooperates with the brake disc; One of the oil separation grooves is arranged between the brake disc and the bearing, and the other oil separation groove is arranged between the bearing and the rope groove.

5. The traction machine according to claim 4, characterized in that, The traction machine also has a rotor structure, a stator structure, a first shell, and a second shell. The first shell is installed on the side wall of the first support seat, and the brake is located in the first shell. The second shell is installed on the side wall of the second support seat, and the first shell and the second shell are arranged opposite to each other. The rotor structure is mounted on the second end of the traction wheel shaft, the stator structure is mounted on the second support seat and is located in the second housing, and the rotor structure is rotationally matched with the stator structure; The first shell and the second shell each include a first plate and four second plates, the first ends of the four second plates are respectively mounted on the four sides of the first plate, the second ends of the four second plates are mounted on the side wall of the first support seat or the second support seat, and a chamber is formed between the first plate, the inner sides of the four second plates and the first support seat; The first plate has a plurality of first ribs and second ribs, the first ribs are extended along the width direction of the first plate, and the second ribs are extended along the length direction of the first plate; The plurality of first ribs and the plurality of second ribs are distributed in a crisscross pattern to form a plurality of sound-absorbing areas.

6. The traction machine according to claim 5, wherein, The second plate has at least one third rib, the third rib is arranged parallel to the first rib, and the third rib is staggered with the first rib.

7. The traction machine according to any one of claims 1 to 6, characterized in that, The traction machine further has a protection structure, which includes two first protection plates and a second protection plate. The two first protection plates are installed on both sides of the support body, and the two first protection plates are respectively located on both sides of the traction wheel shaft. The second protection plate is installed on the upper end of the support body; The first protection plate is bent, and the first protection plate has at least one bending point. The traction wheel shaft has a traction end, and the bending point is arranged close to the traction end.

8. The traction machine according to claim 7, wherein The first protection plate includes a first baffle and a second baffle. The first end of the first baffle is connected to the second baffle. The first baffle and the second baffle form a bending structure, and a first folding angle is formed between the first baffle and the second baffle. The opening direction of the first folding angle faces away from the traction end; The degree of the first folding angle is 30 degrees to 70 degrees.

9. The traction machine according to claim 8, wherein, The first protection plate further includes a third baffle. The third baffle is connected to the second end of the second baffle. A second folding angle is formed between the third baffle and the second baffle. The opening direction of the second folding angle is opposite to the opening direction of the first folding angle; The degree of the second folding angle is greater than the degree of the first folding angle.

10. The traction machine according to claim 8, characterized in that, Fixing plates are arranged at both ends of the first baffle and the second baffle. The fixing plates are provided with installation holes through which fasteners pass, so that both ends of the first baffle and the second baffle are fixed on the first support seat and the second support seat through the fasteners.

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