Speed reduction transmission device and crane

Abstract

The utility model discloses a speed reduction transmission device and a crane, and relates to the technical field of speed reducers, the speed reduction transmission device comprises a main box body, and a first cavity and a second cavity which are communicated with each other are arranged in the main box body; the first transmission assembly comprises a worm and an input flange, the worm is rotatably arranged in the first cavity, the input flange is arranged in the first cavity, and the input flange is connected with the power input end of the worm; the second transmission assembly comprises a worm gear and an output flange, the worm gear and the output flange are both arranged in the second cavity, the worm gear is in power connection with the worm, and the output flange is connected with the power output end of the worm gear. The input flange and the output flange are integrated in the main box body, so that the overall size of the speed reduction transmission device is reduced, the mounting precision and the matching precision in the speed reduction transmission device are improved, and the transmission efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of speed reducer, especially a speed reduction transmission device and crane. BACKGROUND

[0002] Speed reducer is an essential component in production machinery, at present, speed reducer and motor are connected through input flange, and are connected with power output equipment through output flange, the input flange and output flange are arranged on the outside of speed reducer, so that the space occupied by speed reduction is larger, and the appearance is not compact, and the matching precision is poor. In the flexible crane, the speed reducer is the core power transmission component, and its role is crucial, the installation space in the compact flexible crane is smaller, and the power transmission requirement is high, and the existing speed reducer cannot better meet the demand. SUMMARY

[0003] The utility model discloses in order to solve the defects of prior art, provide a kind of speed reduction transmission device and crane, reduce the overall size of speed reduction transmission device, improve the installation precision and matching precision in speed reduction transmission device, improve transmission efficiency.

[0004] In order to solve the above technical problems, the utility model provides a kind of speed reduction transmission device in the first aspect, comprising: main box, the first cavity and the second cavity are communicated in the main box;First transmission assembly, including worm and input flange, the worm is rotatably arranged in the first cavity, the input flange is arranged in the first cavity, and the input flange is connected with the power input end of the worm;Second transmission assembly, including worm wheel and output flange, the worm wheel and output flange are arranged in the second cavity, the worm wheel is connected with the power of the worm, and the output flange is connected with the power output end of the worm wheel.

[0005] As the improvement of the above scheme, the first cavity and the second cavity are cylindrical, and the axial direction of the first cavity and the second cavity is perpendicular.

[0006] As the improvement of the above scheme, the worm wheel and the worm are connected through friction transmission;The friction transmission surface of the worm wheel and the worm is involute tooth shape or circular arc tooth shape.

[0007] As the improvement of the above scheme, the first transmission assembly further includes first bearing, the both sides of the worm are respectively provided with the first bearing, and the worm is rotatably arranged in the first cavity through the first bearing.

[0008] As the improvement of the above-mentioned scheme, the inner wall of the first cavity is provided with an annular mounting groove, the first transmission assembly further comprises a hole card, the outer side of the hole card is in abutment with the mounting groove, the inner side of the hole card is connected with any one of the first bearings in the first cavity, and the hole card is used for axially positioning the worm.

[0009] As the improvement of the above-mentioned scheme, the second transmission assembly further comprises a second bearing, the transmission shafts at the two ends of the worm gear are respectively sleeved with the second bearings, and the worm gear is rotatably arranged in the second cavity through the second bearings.

[0010] As the improvement of the above-mentioned scheme, the second transmission assembly further comprises an oil seal, the oil seal is sleeved on the transmission shafts at the two sides of the worm gear, and the oil seal is located outside the second bearing.

[0011] As the improvement of the above-mentioned scheme, the second transmission assembly further comprises a sealing unit, and the sealing unit is used for sealing the second transmission assembly in the second cavity.

[0012] As the improvement of the above-mentioned scheme, the sealing unit comprises a sealing plate and an output cover, the sealing plate is sleeved on the transmission shaft away from the output flange at the side of the worm gear, and the output cover is sleeved on the second transmission shaft away from the output flange at the side of the worm gear, one end of the output cover is in abutment with the sealing plate, and the other end of the output cover is in abutment with the inner wall of the second cavity.

[0013] The utility model provides a kind of crane in the second aspect, the crane is equipped with the described speed reducer.

[0014] The beneficial effects of the present application are as follows:

[0015] The speed reducer device in the utility model integrates the input flange and the output flange in the main box, reduces the overall size of the speed reducer device, improves the installation accuracy and matching accuracy in the speed reducer device, and improves the transmission efficiency.

[0016] The crane in the utility model sets the speed reducer device, improves the space utilization rate inside the crane, and improves the transmission efficiency inside the crane. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is one of the partial structure sectional views of the speed reducer device in the embodiment of the present application;

[0018] Figure 2 is the second partial structure sectional view of the speed reducer device in the embodiment of the present application.

[0019] The reference signs are explained as follows: 100, main box body; 110, first cavity; 120, second cavity; 210, worm; 220, input flange; 230, first bearing; 240, hole card; 310, worm wheel; 320, output flange; 330, second bearing; 340, oil seal; 350, sealing plate; 360, output cover. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the utility model more clear, the utility model will be described in further detail below with reference to the drawings.

[0021] Referring to Figure 1 , Figure 1 is one of the partial structure sectional views of a speed reduction transmission device in the embodiment of the application; Figure 2 is the second partial structure sectional view of a speed reduction transmission device in the embodiment of the application; the speed reduction transmission device is used for transmitting power to a compact flexible crane; as shown in the figure, the device comprises a main box body 100, the main box body 100 is provided with a first cavity 110 and a second cavity 120 which are communicated; a first transmission assembly comprising a worm 210 and an input flange 220, the worm 210 is rotatably arranged in the first cavity 110, the input flange 220 is arranged in the first cavity 110, and the input flange 220 is connected with a power input end of the worm 210; a second transmission assembly comprising a worm wheel 310 and an output flange 320, the worm wheel 310 and the output flange 320 are both arranged in the second cavity 120, the worm wheel 310 is connected with the worm 210 in power, and the output flange 320 is connected with a power output end of the worm wheel 310. By integrating the input flange 220 and the output flange 320 in the main box body 100, the overall size of the speed reduction transmission device is reduced, the installation precision and the matching precision in the speed reduction transmission device are improved, and the transmission efficiency is improved.

[0022] Preferably, the first cavity 110 and the second cavity 120 are both cylindrical, which can make the overall profile of the first cavity 110 and the second cavity 120 more fit the worm 210 and the worm wheel 310, so that the structure of the speed reduction transmission device is more compact and occupies less space; the first cavity 110 and the second cavity 120 are arranged vertically in the axial direction. In other embodiments, the direction of the first cavity 110 and the second cavity 120 can be arranged according to actual needs.

[0023] Preferably, the worm wheel 310 and the worm 210 are connected through friction transmission; the friction transmission surfaces of the worm wheel 310 and the worm 210 are involute tooth shapes or circular arc tooth shapes.

[0024] Preferably, the meshing surface of the worm wheel 310 and the worm 210 is covered with a friction-enhancing layer made of tin bronze or silicon carbide composite material.

[0025] Referring to Figure 1 Further, in the embodiment, the first transmission assembly further comprises first bearings 230, the worm 210 is rotatably arranged in the first cavity 110 via the first bearings 230 arranged on both sides of the worm 210.

[0026] Preferably, the first bearings 230 are angular contact ball bearings capable of bearing large radial and axial combined loads.

[0027] Referring to Figure 1 Further, in the embodiment, the first cavity 110 is provided with an annular mounting groove on the inner wall, and the first transmission assembly further comprises a hole card 240, the outer side of the hole card 240 abuts against the mounting groove, and the inner side of the hole card 240 is connected with any one of the first bearings 230 in the first cavity 110, the hole card 240 is used for axially positioning the worm 210. Specifically, the hole card 240 is connected with the first bearing 230 close to the input flange 220.

[0028] Referring to Figure 2 Further, in the embodiment, the second transmission assembly further comprises second bearings 330, the transmission shafts on both ends of the worm wheel 310 are respectively sleeved with the second bearings 330, and the worm wheel 310 is rotatably arranged in the second cavity 120 via the second bearings 330.

[0029] Preferably, the second bearings 330 are angular contact ball bearings capable of bearing large radial and axial combined loads.

[0030] Referring to Figure 2 Further, in the embodiment, the second transmission assembly further comprises an oil seal 340, the oil seal 340 is sleeved on the transmission shafts on both sides of the worm wheel 310, and the oil seal 340 is located outside the second bearings 330. The oil seal 340 seals the lubricating oil, prevents external contaminants from entering, protects the second bearings 330 and the worm wheel 310, and reduces the maintenance requirement.

[0031] Referring to Figure 2The second transmission assembly further comprises a sealing unit for sealing the second transmission assembly in the second cavity 120. Specifically, the sealing unit comprises a sealing plate 350 sleeved on the transmission shaft away from the output flange 320 of the worm wheel 310, and an output cover 360 sleeved on the second transmission shaft away from the output flange 320 of the worm wheel 310, one end of the output cover 360 abutting against the sealing plate 350, and the other end of the output cover 360 abutting against the inner wall of the second cavity 120. The transmission shaft of the worm wheel 310 is covered by the output cover 360 and the sealing plate 350, so as to prevent dust from entering or lubricating oil from leaking.

[0032] Further, in the embodiment, a plurality of heat dissipation fins are arranged on the outer wall of the main box 100, and the heat dissipation fins are uniformly distributed along the circumference of the main box 100, and the height of the heat dissipation fins is 5mm-8mm, so as to dissipate heat of the main box 100.

[0033] The embodiment provides a crane in the second aspect, the crane is a compact flexible crane, and the crane is provided with the speed reduction transmission device; by arranging the speed reduction transmission device, the space utilization rate in the crane is improved, and the transmission efficiency in the crane is improved.

[0034] As can be seen from the above, the speed reduction transmission device has the advantages that the input flange and the output flange are integrated in the main box, the overall size of the speed reduction transmission device is reduced, the installation precision and the matching precision in the speed reduction transmission device are improved, and the transmission efficiency is improved.

[0035] The preferred embodiments of the utility model are described above, and it should be noted that, for ordinary skilled persons in the technical field, some improvements and decorations can be made without departing from the principles of the utility model, and these improvements and decorations are also regarded as the protection scope of the utility model.

Claims

1. A reduction gear characterized by comprising: The application relates to a speed reduction transmission device for a crane. The speed reduction transmission device comprises a main box, a first cavity and a second cavity in the main box, a first transmission assembly, a second transmission assembly and a sealing unit. The first cavity and the second cavity are both cylindrical, and the first cavity and the second cavity are arranged vertically. The first transmission assembly further comprises a first bearing, and the two sides of the worm are sleeved with the first bearings, so that the worm is rotatably arranged in the first cavity through the first bearings.

2. The reduction gear according to claim 1, characterized in that The first cavity is provided with an annular mounting groove on the inner wall, and the first transmission assembly further comprises a hole card, the outer side of the hole card is in abutment with the mounting groove, the inner side of the hole card is connected with any one of the first bearings in the first cavity, and the hole card is used for axially positioning the worm.

3. The reduction gear according to claim 1, characterized in that The second transmission assembly further comprises a second bearing, and the transmission shafts at the two ends of the worm gear are sleeved with the second bearings, so that the worm gear is rotatably arranged in the second cavity through the second bearings.

4. The reduction gear according to claim 1, characterized in that The second transmission assembly further comprises an oil seal, and the oil seal is sleeved on the transmission shafts at the two sides of the worm gear, and the oil seal is located outside the second bearing.

5. The reduction gear according to claim 4, characterized in that The second transmission assembly further comprises a sealing unit, and the sealing unit is used for sealing the second transmission assembly in the second cavity.

6. The reduction gear of claim 1, wherein The sealing unit comprises a sealing plate and an output cover.

7. The reduction gear according to claim 6, characterized in that The crane is provided with the speed reduction transmission device as claimed in any one of claims 1 to 9.

8. The reduction gear according to claim 7, characterized in that ​ 9. The reduction gear according to claim 8, characterized in that ​ ​ ​ 10. A crane, characterized in that ​

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