Speed optimizing device of truck-mounted crane slewing mechanism

Abstract

The utility model discloses a speed optimizing device for a truck-mounted crane slewing mechanism, and relates to the technical field of slewing mechanisms. The device comprises a base, outer teeth are rotationally installed at the top end of the base, inner ring rolling bodies used in cooperation with the outer teeth are arranged in the outer teeth, a first gear is rotationally installed on one side of the base and connected with the outer teeth in a meshed mode, and a protection box is fixedly installed on the side, close to the first gear, of the bottom end of the base. A first rotating shaft fixedly penetrates through the middle of the first gear, the first rotating shaft rotationally penetrates through the protection box, the bottom of the first rotating shaft is fixedly sleeved with a second gear, and the outer side of the second gear is connected with a third gear in an engaged mode. Through the arrangement of the first spiral gear and the second spiral gear, the overlap ratio is increased, loads of other gears are reduced, and therefore the bearing capacity of the gear is improved, the service life is prolonged, meanwhile, transmission can be more stable, and the influence on the rotation speed is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of slewing mechanisms, in particular to a speed optimization device for a slewing mechanism of a truck crane. Background Art

[0002] The slewing mechanism is a mechanism that enables the slewing part of the truck crane or other machinery to rotate around its rotation center line to achieve rotational motion; it cooperates with other mechanisms to complete the spatial transportation task of goods or other work cycles; it is composed of a drive device, a transmission device and a slewing bearing; the power of the drive device is transmitted to the large gear ring fixed on the frame through the output pinion of the transmission device, so that the turntable rotates around its rotation center line; according to different transmission methods, it can be divided into mechanical transmission, electric transmission and hydraulic transmission;

[0003] The rotary mechanism in the prior art usually uses a worm gear to drive the output gear when in use, but relying solely on the worm gear is likely to cause a large load on it, reducing the service life of the worm gear, and in the long run it is likely to affect the rotation speed;

[0004] In view of the above problems, the inventor proposes a speed optimization device for a slewing mechanism of a truck crane to solve the above problems. Utility Model Content

[0005] In order to solve the problem that relying only on the worm gear easily causes a heavy load thereon, the utility model aims to provide a speed optimization device for the slewing mechanism of a truck crane.

[0006] In order to solve the above technical problems, the utility model adopts the following technical scheme: a speed optimization device for the slewing mechanism of a truck crane, comprising a base, the top of the base is rotatably installed with an external tooth, the inner ring rolling body used in conjunction with the external tooth is arranged inside the external tooth, a first gear is rotatably installed on one side of the base, the first gear and the external tooth are meshingly connected, a protection box is fixedly installed on the side of the bottom end of the base close to the first gear, a first rotating shaft is fixedly passed through the middle of the first gear, the first rotating shaft rotates through the protection box, a second gear is fixedly sleeved at the bottom of the first rotating shaft, a third gear is meshingly connected to the outer side of the second gear, a second rotating shaft is fixedly passed through the middle of the third gear, the second rotating shaft rotates through the protection box, a first helical gear is fixedly sleeved at the top of the second rotating shaft, a second helical gear is meshingly connected to the outer side of the first helical gear, a third rotating shaft is fixedly passed through the middle of the second helical gear, the third rotating shaft rotates through the protection box, a first worm gear is fixedly sleeved at the bottom of the third rotating shaft, and a first worm is meshingly connected to the outer side of the first worm gear.

[0007] Preferably, the top end of the external tooth is fixedly penetrated by an oiling nozzle, and a positioning plate is fixedly installed on the side of the top end of the external tooth close to the oiling nozzle, and a bracket is fixedly installed on the side of the base away from the positioning plate, and the bracket is distributed in an L-shaped state, and the top of the bracket is rotatably penetrated by a second worm, and the outer side of the second worm is meshed with a second worm wheel, and the top end of the second worm wheel is fixedly installed with a hollow tube, and the top end of the hollow tube is rotatably installed on the upper surface of the inner wall of the bracket, and the middle thread of the hollow tube is penetrated by a threaded rod, and the threaded rod rotatably penetrates the top of the bracket, and a blocking block is fixedly installed on the top end of the threaded rod, and a lifting plate for matching use is provided at the bottom end of the threaded rod, and a contact block is provided on the side of the lifting plate away from the second worm, and a cavity is opened inside the lifting plate, and evenly distributed springs are fixedly installed on the inner wall of the cavity, and the number of the springs is three, and the spring is fixedly connected to the contact block, and a soft pad is fixedly installed on the side of the contact block away from the spring.

[0008] Preferably, a limiting rod is fixedly mounted on the upper surface of the inner wall of the bracket, and the limiting rod passes through the lifting plate.

[0009] Preferably, a motor is fixedly mounted on one side of the protective box, and the output end of the motor and the first worm are coaxially fixedly mounted.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] 1. The first helical gear and the second helical gear are set to increase the overlap and reduce the load on other gears, thereby improving their carrying capacity and extending their service life. At the same time, the transmission can be made more stable and avoid affecting the rotation speed;

[0012] 2. By driving the outer teeth to rotate, the second worm is driven to rotate at the same time, so that it drives the second worm wheel to rotate, and the second worm wheel drives the hollow tube to rotate. At this time, the threaded rod that penetrates the hollow tube moves downward, driving the lifting plate and the contact block to move downward. When the outer teeth rotate to a certain extent, the positioning plate and the contact block come into contact, and the rotation of the outer teeth is stopped at this time, so that the position of the oiling nozzle can be positioned, which is convenient for people to oil it at the appropriate position, thereby improving the efficiency of oiling. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1It is a schematic diagram of the overall structure of the utility model.

[0015] Figure 2 It is a schematic diagram of the structure inside the protective box of the utility model.

[0016] Figure 3 It is a structural schematic diagram of the bracket in the utility model.

[0017] Figure 4 It is a structural schematic diagram of the lifting plate in the utility model.

[0018] Figure 5 It is a structural schematic diagram of the spring in the utility model.

[0019] In the figure: 1. base; 11. outer teeth; 12. inner ring rolling element; 13. first gear; 14. protective box; 15. first rotating shaft; 16. second gear; 17. third gear; 18. second rotating shaft; 19. first helical gear; 191. second helical gear; 192. third rotating shaft; 193. first worm gear; 194. first worm; 2. oiling nozzle; 21. positioning plate; 22. bracket; 23. second worm; 24. second worm gear; 25. hollow tube; 26. threaded rod; 27. lifting plate; 28. contact block; 3. cavity; 31. spring; 4. cushion; 5. limit rod; 6. blocking block; 7. motor. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Example: Figure 1-5As shown, the utility model provides a speed optimization device for the slewing mechanism of a truck crane, comprising a base 1, an outer tooth 11 is rotatably installed on the top of the base 1, an inner ring rolling body 12 is arranged inside the outer tooth 11 for use with the base 1, a first gear 13 is rotatably installed on one side of the base 1, the first gear 13 and the outer tooth 11 are meshingly connected, a protection box 14 is fixedly installed on one side of the bottom end of the base 1 close to the first gear 13, a first rotating shaft 15 is fixedly penetrated in the middle of the first gear 13, the first rotating shaft 15 rotatably penetrates the protection box 14, a second gear 16 is fixedly sleeved on the bottom of the first rotating shaft 15, a third gear 17 is meshingly connected on the outer side of the second gear 16, a second rotating shaft 18 is fixedly penetrated in the middle of the third gear 17, the second rotating shaft 18 rotatably penetrates the protection box 14, a first helical gear 19 is fixedly sleeved on the top of the second rotating shaft 18, a second helical gear 19 is meshingly connected on the outer side of the first helical gear 19, a third rotating shaft 192 is fixedly penetrated in the middle of the second helical gear 191, the third rotating shaft 192 rotatably penetrates Wearing the protective box 14, the bottom fixed sleeve of the third rotating shaft 192 is provided with a first worm gear 193, and the outer side of the first worm gear 193 is meshedly connected with the first worm 194. In actual use, by driving the first worm 194, the first worm gear 193 is driven to rotate, the first worm gear 193 drives the third rotating shaft 192 to rotate, the third rotating shaft 192 drives the second helical gear 191 to rotate, the second helical gear 191 drives the first helical gear 19 to rotate, the first helical gear 19 drives the second rotating shaft 18 to rotate, the second rotating shaft 18 drives the third gear 17 to rotate, the third gear 17 drives the second gear 16 to rotate, and the second gear 16 drives the first rotating shaft 15 to rotate, so that the first gear 13 rotates and drives the outer tooth 11 to rotate, thereby improving the stability of power transmission, and by setting the first helical gear 19 and the second helical gear 191, the overlap is increased, and the load of other gears is reduced, thereby improving their bearing capacity and extending their service life. At the same time, the transmission can be made smoother to avoid affecting the rotation speed.

[0022] An oiling nozzle 2 is fixedly penetrated at the top of the external tooth 11, a positioning plate 21 is fixedly installed on the side of the top of the external tooth 11 close to the oiling nozzle 2, a bracket 22 is fixedly installed on the side of the base 1 away from the positioning plate 21, the bracket 22 is distributed in an L-shaped state, a second worm 23 is rotatably penetrated at the top of the bracket 22, a second worm wheel 24 is meshingly connected to the outer side of the second worm 23, a hollow tube 25 is fixedly installed at the top of the second worm wheel 24, the top of the hollow tube 25 is rotatably installed on the upper surface of the inner wall of the bracket 22, a threaded rod 26 is threadedly penetrated in the middle of the hollow tube 25, the threaded rod 26 rotatably penetrates the top of the bracket 22, a lifting plate 27 is provided at the bottom end of the threaded rod 26 for matching use, and a contact block 28 is provided on the side of the lifting plate 27 away from the second worm 23.

[0023] By adopting the above technical solution, when oiling is needed, the outer teeth 11 are driven to rotate, and the second worm 23 is driven to rotate at the same time, so that it drives the second worm wheel 24 to rotate, and the second worm wheel 24 drives the hollow tube 25 to rotate. At this time, the threaded rod 26 that passes through the hollow tube 25 moves downward, driving the lifting plate 27 and the contact block 28 to move downward. When the outer teeth 11 rotate to a certain extent, the positioning plate 21 and the contact block 28 come into contact, and the rotation of the outer teeth 11 is stopped at this time, so that the position of the oiling nozzle 2 can be positioned, which is convenient for people to oil it at a suitable position, thereby improving the efficiency of oiling.

[0024] A cavity 3 is formed inside the lifting plate 27 , and springs 31 evenly distributed are fixedly mounted on the inner wall of the cavity 3 . The springs 31 are fixedly connected to the contact block 28 .

[0025] By adopting the above technical solution, by setting the cavity 3 and the spring 31, when the contact block 28 and the positioning plate 21 come into contact, the spring 31 is deformed, thereby being able to absorb a certain impact force and reduce the friction generated when the contact block 28 and the positioning plate 21 come into contact.

[0026] A soft pad 4 is fixedly mounted on a side of the contact block 28 away from the spring 31 .

[0027] By adopting the above technical solution and providing the soft pad 4, the wear on the contact block 28 and the positioning plate 21 can be reduced.

[0028] A limit rod 5 is fixedly mounted on the upper surface of the inner wall of the bracket 22 , and the limit rod 5 passes through the lifting plate 27 .

[0029] By adopting the above technical solution and setting the limit rod 5, the lifting plate 27 is prevented from shifting when descending, so that the contact block 28 can contact the positioning plate 21 smoothly, making it convenient for people to oil the oiling nozzle 2 at a suitable position.

[0030] A blocking block 6 is fixedly mounted on the top end of the threaded rod 26 .

[0031] By adopting the above technical solution and setting the blocking block 6, the threaded rod 26 can be prevented from falling off due to excessive descent, and the threaded rod 26 can be limited so that the lifting plate 27 and the positioning plate 21 are on the same horizontal line.

[0032] A motor 7 is fixedly mounted on one side of the protection box 14 , and an output end of the motor 7 and the first worm 194 are coaxially fixedly mounted.

[0033] By adopting the above technical solution and providing the motor 7, it is convenient to drive the first worm 194 to rotate, thereby enabling a smoother transmission.

[0034] The number of springs 31 is three.

[0035] By adopting the above technical solution, it is possible to absorb more impact force and reduce the friction generated when the contact block 28 and the positioning plate 21 are in contact.

[0036] Working principle: In actual use, by driving the first worm 194 to drive the first worm wheel 193 to rotate, the first worm wheel 193 drives the third shaft 192 to rotate, the third shaft 192 drives the second helical gear 191 to rotate, the second helical gear 191 drives the first helical gear 19 to rotate, the first helical gear 19 drives the second shaft 18 to rotate, the second shaft 18 drives the third gear 17 to rotate, the third gear 17 drives the second gear 16 to rotate, the second gear 16 drives the first shaft 15 to rotate, so that the first gear 13 rotates and drives the outer tooth 11 to rotate, thereby improving the stability of power transmission, and by setting the first helical gear 19 and the second helical gear 191, the overlap is increased and the reduction is reduced. The load of other gears is reduced, thereby improving their load-bearing capacity and extending their service life. At the same time, it can make the transmission more stable and avoid affecting the rotation speed. When oiling is needed, the outer teeth 11 are driven to rotate, and the second worm 23 is driven to rotate at the same time, so that it drives the second worm wheel 24 to rotate, and the second worm wheel 24 drives the hollow tube 25 to rotate. At this time, the threaded rod 26 that penetrates the hollow tube 25 moves downward, driving the lifting plate 27 and the contact block 28 to move downward. When the outer teeth 11 rotate to a certain extent, the positioning plate 21 and the contact block 28 come into contact, and the rotation of the outer teeth 11 is stopped at this time, so that the position of the oiling nozzle 2 can be positioned, which is convenient for people to oil it at a suitable position, thereby improving the efficiency of oiling.

[0037] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A speed optimization device for a slewing mechanism of a truck-mounted crane, comprising a base (1), characterized in that: An outer tooth (11) is rotatably mounted on the top of the base (1), and an inner ring rolling body (12) for use with the outer tooth (11) is arranged inside the outer tooth (11). A first gear (13) is rotatably mounted on one side of the base (1), and the first gear (13) and the outer tooth (11) are meshingly connected. A protective box (14) is fixedly mounted on the side of the bottom end of the base (1) close to the first gear (13). A first rotating shaft (15) is fixedly passed through the middle of the first gear (13), and the first rotating shaft (15) rotatably passes through the protective box (14). A second gear (16) is fixedly sleeved on the bottom of the first rotating shaft (15), and the outer side of the second gear (16) is meshingly connected with a third gear (14). Gear (17), a second rotating shaft (18) is fixedly passed through the middle of the third gear (17), the second rotating shaft (18) rotates and passes through the protective box (14), the top fixed sleeve of the second rotating shaft (18) is provided with a first helical gear (19), the outer side of the first helical gear (19) is meshedly connected with a second helical gear (191), the middle part of the second helical gear (191) is fixedly passed through the third rotating shaft (192), the third rotating shaft (192) rotates and passes through the protective box (14), the bottom fixed sleeve of the third rotating shaft (192) is provided with a first worm gear (193), the outer side of the first worm gear (193) is meshedly connected with a first worm (194).

2. The speed optimization device for the slewing mechanism of a truck crane according to claim 1, characterized in that: The top end of the external tooth (11) is fixedly penetrated by an oiling nozzle (2); a positioning plate (21) is fixedly mounted on the side of the top end of the external tooth (11) close to the oiling nozzle (2); a bracket (22) is fixedly mounted on the side of the base (1) away from the positioning plate (21); the bracket (22) is distributed in an L-shaped state; a second worm (23) is rotatably penetrated at the top of the bracket (22); the outer side of the second worm (23) is meshingly connected with a second worm wheel (24); the second A hollow tube (25) is fixedly mounted on the top of the worm gear (24), and the top of the hollow tube (25) is rotatably mounted on the upper surface of the inner wall of the bracket (22). A threaded rod (26) is threadedly penetrated through the middle of the hollow tube (25), and the threaded rod (26) rotatably penetrates the top of the bracket (22). A lifting plate (27) for use with the lifting plate (26) is disposed at the bottom end of the threaded rod (26), and a contact block (28) is disposed on a side of the lifting plate (27) away from the second worm gear (23).

3. The speed optimization device for the slewing mechanism of a truck crane according to claim 2, characterized in that: A cavity (3) is provided inside the lifting plate (27), and evenly distributed springs (31) are fixedly mounted on the inner wall of the cavity (3), and the springs (31) are fixedly connected to the contact block (28).

4. The speed optimization device for the slewing mechanism of a truck crane as claimed in claim 3, characterized in that: A soft pad (4) is fixedly mounted on the side of the contact block (28) away from the spring (31).

5. The speed optimization device for the slewing mechanism of a truck crane as claimed in claim 3, characterized in that: A limiting rod (5) is fixedly mounted on the upper surface of the inner wall of the bracket (22), and the limiting rod (5) passes through the lifting plate (27).

6. The speed optimization device for the slewing mechanism of a truck mounted crane according to claim 2, characterized in that: A blocking block (6) is fixedly mounted on the top end of the threaded rod (26).

7. The speed optimization device for the slewing mechanism of a truck crane according to claim 1, characterized in that: A motor (7) is fixedly mounted on one side of the protection box (14), and an output end of the motor (7) and a first worm gear (194) are coaxially fixedly mounted.

8. The speed optimization device for the slewing mechanism of a truck-mounted crane according to claim 3, characterized in that: The number of the springs (31) is three.

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