Rotary speed reducer device for rotating hanging basket of mobile vehicle-mounted aerial vehicle

Abstract

The utility model relates to the field of rotary speed reducers, in particular to a rotary speed reducer device for rotating a movable vehicle-mounted overhead vehicle hanging basket, which is characterized in that rolling steel balls are mounted between a rotary support inner ring raceway and a rotary support outer ring raceway, and a gap is reserved between the rotary support inner ring raceway and the rotary support outer ring raceway; a box body oil injection hole runner is formed in one side of the box body, lubricating grease is directly injected into a slewing bearing inner ring raceway through the box body oil injection hole runner, a slewing bearing upper dustproof ring and a slewing bearing lower dustproof ring are installed on the upper portion and the lower portion of the slewing bearing inner ring raceway respectively, and the left side of the box body is designed into an integrated bearing hole. Only one end of the right side of the box body is provided with the end cover fixing plate and the tapered roller bearing, the worm can only be inserted from the right side to be installed, the design enables lubrication to be more convenient, meanwhile, the light-weight design reduces unnecessary structures, and cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of slewing reducers, in particular to a slewing reducer device for the rotation of a suspended basket of a mobile vehicle-mounted aerial work platform. Background Art

[0002] For a mobile vehicle-mounted aerial work platform, when working at height, the boom, the slewing reducer at the front end of the boom and the suspended basket of the aerial work platform need to extend outwards according to the distance requirements. Therefore, the longer the distance extends and the greater the overall weight of the suspended basket and the slewing reducer, the higher the requirement for the tipping moment of the entire boom.

[0003] For a mobile vehicle-mounted aerial work platform, when working at height, the suspended basket needs to rotate according to the angle change requirements of the operation. A slewing reducer device is installed at the bottom of the suspended basket. After the slewing reducer device works for 500 hours or 12 months, lubricating oil needs to be added to the raceway of the slewing bearing inside the slewing reducer device, the meshing part of the slewing bearing gear ring and the worm, and the tapered roller bearings at both ends of the worm, so as to reduce the wear generated during the rotation of the slewing reducer device, thereby extending the service life of the slewing reducer device. At present, the lubricating oil filling holes of the slewing reducer device used for the suspended basket of the mobile vehicle-mounted aerial work platform are arranged on the top end face of the outer gear ring of the slewing bearing, the inner wall of the inner ring of the slewing bearing or the bottom end face. During the process of adding lubricating oil to the slewing reducer device, it is necessary to first open the dust cover above the fixed plate of the suspended basket and the slewing reducer or remove the fixed base of the slewing reducer to add lubricating oil to the raceway of the slewing bearing inside the slewing reducer device. Otherwise, it is impossible to directly add lubricating oil to the raceway of the slewing bearing inside the slewing reducer. The slewing reducer device needs to be filled with lubricating oil regularly, and each time it is necessary to open the dust cover above the fixed plate of the suspended basket and the slewing reducer or add lubricating oil from the fixed base of the slewing reducer. The above two methods of adding lubricating oil are both inconvenient, time-consuming and laborious. For a mobile vehicle-mounted aerial work platform, when the vehicle is used for 6 to 7 months, the power supply voltage of the drive motor of the slewing reducer often drops in some vehicles, resulting in the drive motor of the slewing reducer rotating weakly. Therefore, we have made an optimized improvement on the traditional slewing reduction product and proposed a lightweight slewing reducer device for the rotation of a suspended basket of a mobile vehicle-mounted aerial work platform. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the deficiencies existing in the prior art and propose a slewing reducer device for the rotation of a suspended basket of a mobile vehicle-mounted aerial work platform.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A slewing speed reducer device for the rotation of a mobile vehicle-mounted aerial work basket includes a box body, an inner raceway of a slewing bearing, and an outer raceway of the slewing bearing. Rolling steel balls are installed between the inner raceway of the slewing bearing and the outer raceway of the slewing bearing. There is a gap between the inner raceway of the slewing bearing and the outer raceway of the slewing bearing. An oil injection hole passage is opened on one side of the box body. The oil injection hole passage of the box body is connected to the inner raceway of the slewing bearing and the outer raceway of the slewing bearing through an oil injection hole passage of the slewing bearing. Lubricating grease is directly injected into the inner raceway of the slewing bearing through the oil injection hole passage of the box body. A top dust-proof ring of the slewing bearing and a bottom dust-proof ring of the slewing bearing are respectively installed above and below the inner raceway of the slewing bearing. The left side of the box body adopts an integrated bearing hole design. Only one end on the right side of the box body is provided with an end cover fixing plate and a tapered roller bearing. The worm can only be inserted and installed from the right side.

[0007] In addition, the preferred structure is that the inner raceway of the slewing bearing and the outer raceway of the external gear ring of the slewing bearing are the same, and the inner raceway of the slewing bearing and the outer raceway of the external gear ring of the slewing bearing are at the same height. Rolling steel balls and rolling element steel ball spacers of the slewing bearing are arranged between the inner raceway of the slewing bearing and the outer raceway of the external gear ring of the slewing bearing.

[0008] In addition, the preferred structure is that a stainless steel grease nipple is installed at the injection port of the oil injection hole passage of the box body.

[0009] In addition, the preferred structure is that an excessive flange of the external gear ring of the slewing bearing is installed on the external gear ring of the slewing bearing, and the excessive flange of the external gear ring of the slewing bearing is made of nylon material.

[0010] The beneficial effects of the utility model are as follows:

[0011] (1) Connect an oil gun and align it with the stainless steel grease nipple to inject lubricating grease. The lubricating grease will enter between the outer raceway of the external gear ring of the slewing bearing and the inner race of the slewing bearing through the oil injection hole passage of the box body and the oil injection hole passage of the slewing bearing to lubricate the rolling steel balls. The slewing speed reducer device sets the stainless steel grease nipple at the lower left center outside the box body of the slewing speed reducer device. When injecting oil to lubricate the rolling steel balls between the outer raceway of the external gear ring of the slewing bearing and the inner race of the slewing bearing of the slewing speed reducer device, it is not necessary to open the upper dust-proof cover of the aerial work basket and the slewing speed reducer fixing plate or add lubricating oil from the fixed base of the slewing speed reducer, and the lubrication of the rolling steel balls can be easily and conveniently realized.

[0012] (2) The excessive flange of the external gear ring of the slewing bearing is made of high-strength nylon material. When the excessive flange of the external gear ring of the slewing bearing is connected and installed with the aerial work basket, it can play an insulating role to effectively ensure the personal safety of the operators when they are working in the aerial work basket, and make the overall weight of the slewing speed reducer lighter than that of the traditional slewing speed reducer, thereby effectively reducing the requirement for the tipping moment of the entire boom after the boom of the aerial vehicle extends outward.

[0013] (3) The left side of the box body adopts an integrated bearing hole design. The worm is inserted into the box body from the right side, and only the end cover at one end on the right side is needed to fix the tapered roller bearing, thus reducing the need to install an end cover at the left end to fix the tapered roller bearing in the traditional slewing reducer. As a result, the overall structure of the slewing reducer is more compact, the structure is simpler, the assembly is faster, and the weight is lighter. At the same time, the worm adopts a double-helix lead design, which improves the transmission efficiency of the outer gear ring of the slewing bearing, thereby reducing the power demand of the driving motor when the slewing reducer rotates, and enabling the vehicle power supply system to solve the problem of good voltage drop of the power supply voltage of the driving motor of the slewing reducer. Description of the Drawings

[0014] Figure 1 It is a schematic side sectional structure view of a slewing reducer device for the rotation of a mobile vehicle-mounted aerial work platform basket proposed by the present utility model;

[0015] Figure 2 It is a schematic front sectional structure view of a slewing reducer device for the rotation of a mobile vehicle-mounted aerial work platform basket proposed by the present utility model;

[0016] Figure 3 It is a schematic overall structure view of a slewing reducer device for the rotation of a mobile vehicle-mounted aerial work platform basket proposed by the present utility model.

[0017] In the figure: 1, box body; 2, inner raceway of slewing bearing; 3, outer raceway of slewing bearing; 4, rolling steel ball; 5, oil injection hole flow channel of box body; 6, upper dust-proof ring of slewing bearing; 7, lower dust-proof ring of slewing bearing; 8, end cover fixing plate; 9, tapered roller bearing; 10, worm; 11, oil injection hole flow channel of slewing bearing; 12, transition flange of outer gear ring of slewing bearing; 13, stainless steel grease nipple. Detailed Embodiment

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0019] Refer to Figures 1 - 3, A slewing reducer device for the rotation of the basket of a mobile vehicle-mounted aerial work platform, comprising a housing 1, an inner raceway 2 of a slewing bearing and an outer raceway 3 of the slewing bearing. Rolling steel balls 4 are installed between the inner raceway 2 of the slewing bearing and the outer raceway 3 of the slewing bearing. There is a gap between the inner raceway 2 of the slewing bearing and the outer raceway 3 of the slewing bearing. A housing oil filling hole passage 5 is provided on one side of the housing 1. The housing oil filling hole passage 5 is connected to the inner raceway 2 of the slewing bearing and the outer raceway 3 of the slewing bearing through a slewing bearing oil filling hole passage 11. Lubricating grease is directly injected into the inner raceway 2 of the slewing bearing through the housing oil filling hole passage 5. A top dust-proof ring 6 of the slewing bearing and a bottom dust-proof ring 7 of the slewing bearing are respectively installed above and below the inner raceway 2 of the slewing bearing. The left side of the housing 1 adopts an integrated bearing hole design. Only one end on the right side of the housing 1 is provided with an end cover fixing plate 8 and a tapered roller bearing 9. The worm 10 can only be inserted and installed from the right side. A stainless steel grease nipple 13 is installed at the injection port of the housing oil filling hole passage 5. Connect an oil gun and align it with the stainless steel grease nipple 13 to inject lubricating grease. The lubricating grease will enter the space between the outer raceway 3 of the slewing bearing and the inner raceway 2 of the slewing bearing through the housing oil filling hole passage 5 and the slewing bearing oil filling hole passage 11 to lubricate the rolling steel balls 4. This slewing reducer device sets the stainless steel grease nipple 13 at the lower left center outside the housing of the slewing reducer device. When injecting oil to lubricate the rolling steel balls 4 between the outer raceway 3 of the slewing bearing and the inner raceway 2 of the slewing bearing of the slewing reducer device, it is not necessary to open the upper dust-proof cover of the aerial work platform basket and the slewing reducer fixing plate or add lubricating oil from the slewing reducer fixed base. Lubricating grease can be injected through the stainless steel grease nipple, and the lubrication of the rolling steel balls can be easily and conveniently achieved.

[0020] An over-flange 12 of the outer gear ring of the slewing bearing is installed on the outer raceway 3 of the slewing bearing. The over-flange 12 of the outer gear ring of the slewing bearing is made of nylon material. When the over-flange 12 of the outer gear ring of the slewing bearing is connected and installed with the aerial work platform basket, it can play an insulating role to effectively ensure the personal safety of the operators when they are working in the aerial work platform basket, and make the overall weight of the slewing reducer lighter than that of the traditional slewing reducer, thereby effectively reducing the requirement for the tipping moment of the entire boom after the boom of the aerial work vehicle extends outwards.

[0021] The left side of the housing 1 adopts an integrated bearing hole design. The worm 10 is inserted into the housing from the right side. Only one end on the right side needs to be provided with an end cover fixing plate 8 and a tapered roller bearing 9. (Traditionally, end cover fixing plates 8 and tapered roller bearings 9 are installed on both sides, and the worm 10 can be inserted from either end), thereby reducing the need to install end cover fixed tapered roller bearings at the left end of the traditional slewing reducer, making the overall structure of the slewing reducer more compact, the structure simpler, the assembly faster, and the weight lighter.

[0022] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. A slewing speed reducer device for the rotation of a mobile vehicle-mounted aerial work platform basket, comprising a box body, an inner raceway of a slewing bearing and an outer raceway of the slewing bearing, characterized in that, There are rolling steel balls installed between the raceway of the inner ring of the slewing bearing and the raceway of the outer ring of the slewing bearing. There is a gap between the raceway of the inner ring of the slewing bearing and the raceway of the outer ring of the slewing bearing. There is a lubricating oil injection hole flow channel on one side of the box body. The lubricating oil injection hole flow channel of the box body is connected to the raceway of the inner ring of the slewing bearing and the raceway of the outer ring of the slewing bearing through the lubricating oil injection hole flow channel of the slewing bearing. The lubricating grease is directly injected into the raceway of the inner ring of the slewing bearing through the lubricating oil injection hole flow channel of the box body. A dust-proof ring on the upper part and a dust-proof ring on the lower part of the slewing bearing are installed above and below the raceway of the inner ring of the slewing bearing respectively. The left side of the box body adopts an integrated bearing hole design. Only one end on the right side of the box body is installed with an end cover fixing plate and a tapered roller bearing. The worm can only be inserted and installed from the right side.

2. The rotary speed reducer device for the rotation of the aerial work platform basket of a mobile vehicle-mounted aerial work platform according to claim 1, characterized in that, The raceway of the inner ring of the slewing bearing is the same as the raceway of the external gear ring of the slewing bearing, and the raceway of the inner ring of the slewing bearing and the raceway of the external gear ring of the slewing bearing are at the same height. There are rolling element steel balls and slewing bearing rolling element steel ball spacers arranged between the raceway of the inner ring of the slewing bearing and the raceway of the external gear ring of the slewing bearing.

3. A rotary speed reducer device for the rotation of the gondola of a mobile vehicle-mounted aerial work platform according to claim 1, characterized in that, A stainless steel grease nipple is installed at the injection port of the lubricating oil injection hole flow channel of the box body.

4. A rotary reducer device for the rotation of the basket of a mobile vehicle-mounted aerial work platform according to claim 1, characterized in that, An excessive flange of the external gear ring of the slewing bearing is installed on the raceway of the outer ring of the slewing bearing.

5. A rotary speed reducer device for the rotation of a high-altitude work platform basket on a mobile vehicle-mounted aerial work platform according to claim 4, characterized in that, The excessive flange of the external gear ring of the slewing bearing is made of nylon material.

Images