CN219605955U - Front folding type turnover-preventing worm gear reducer for electric wheelchair - Google Patents

Abstract

The utility model relates to the technical field of speed reducers, in particular to a worm gear speed reducer for a forward folding type anti-overturning electric wheelchair, which comprises a chassis, wherein an opening is formed in the outer wall of the chassis, and an end cover is arranged at the opening; the worm wheel is rotatably arranged below the inner part of the case; the worm is rotatably arranged above the inside of the case and meshed with the worm wheel; the movable block is slidably arranged in the case along the axis direction of the worm, the movable block is positioned above the worm, and the instillation head is arranged at the bottom end of the movable block. According to the utility model, the lubricating oil in the oil storage shell enters the instilling head through the hose and drips out onto the worm from the output end at the bottom of the instilling head, and the worker drives the moving block to slide back and forth along the axis direction of the worm through the driving component, so that the lubricating oil dribbling out from the output end at the bottom of the instilling head can be distributed on the worm more uniformly, the adding time of the lubricating oil can be reduced, the time is saved, the operation is convenient, and the efficiency is higher.

Description

Front folding type turnover-preventing worm gear reducer for electric wheelchair

Technical Field

The utility model relates to the technical field of speed reducers, in particular to a worm gear speed reducer for a forward folding type anti-overturning electric wheelchair.

Background

The worm gear speed reducer is a power transmission mechanism, a speed converter of a gear is utilized to reduce the revolution number of a motor to a required revolution number and obtain a mechanism with larger torque, the worm gear speed reducer is widely applied to a mechanism for transmitting power and motion, and because a transmission contact mode of a worm gear is in rigid meshing contact, in order to keep the smoothness of worm gear transmission, lubricating oil needs to be periodically added to the worm gear, at present, the conventional lubricating oil adding mode is to set an oil filling port at the top of a machine box, the lubricating oil is instilled on the worm positioned above through the oil filling port, and the lubricating effect is achieved through the transmission of the worm gear;

however, the conventional method of adding lubricating oil has certain drawbacks: the position of the lubricating oil instilling on the worm is fixed, and the lubricating oil instilling is only carried out at the local position of the worm, so that the lubricating oil needs to be slowly paved on the contact surface of the whole worm gear through the transmission of the worm, the process of adding the lubricating oil is longer in time consumption and lower in efficiency.

Disclosure of Invention

The utility model mainly aims to provide a worm gear reducer for a forward-folding type anti-overturning electric wheelchair, so that the problems pointed out in the background art are effectively solved.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

a worm gear reducer for a forward folding type anti-overturning electric wheelchair, comprising:

the outer wall of the case is provided with an opening, and an end cover is arranged at the opening;

the worm wheel is rotatably arranged below the inner part of the case;

the worm is rotatably arranged above the inside of the case and meshed with the worm wheel;

the moving block is arranged in the case in a sliding manner along the axis direction of the worm, and is positioned above the worm, and the bottom end of the moving block is provided with a instillation head;

an oil storage shell is fixedly arranged at the top end of the case, a hose is communicated between the oil storage shell and the instillation head, and a control valve is arranged on the hose;

the chassis is provided with a driving component for driving the moving block to slide back and forth along the axis direction of the worm.

Preferably, the drive assembly comprises a drive shaft, the drive shaft is arranged on the case along the axis direction of the worm, one end of the drive shaft rotates to penetrate through the outer wall of the case, a roller is sleeved on the circumferential outer wall of the drive shaft, which is positioned in the case, a spiral groove is formed in the circumferential outer wall of the roller, a guide column is fixedly arranged on one side of the moving block, facing the roller, of the guide column, and one end of the guide column, facing away from the moving block, slides and stretches into the spiral groove.

Preferably, two limit posts are fixedly arranged in the case along the axis direction of the worm, the two limit posts are located above the worm, and the moving block is slidably sleeved on the two limit posts.

Preferably, one end of the driving shaft, which is positioned outside the case, is fixedly provided with a knob, and the circumferential outer wall of the knob is provided with anti-skid patterns.

Preferably, the worm and the rotational connection of the worm and the case are provided with bearing assemblies.

Preferably, the bottom end of the case is provided with an oil drain hole, and an oil drain bolt is arranged at the oil drain hole in a tightly threaded connection manner.

Preferably, the top end of the case is provided with a breather in a communicating manner.

Preferably, an observation hole is formed in the outer wall of the case, a transparent plate is arranged at the observation hole, and the observation hole is positioned at the right front side of the worm.

After the technical scheme is adopted, the utility model has the beneficial effects that:

the lubricating oil in the oil storage shell enters the instilling head through the hose and drips out onto the worm from the output end at the bottom of the instilling head, and the worker drives the moving block to slide back and forth along the axis direction of the worm through the driving component, so that the lubricating oil dribbling out from the output end at the bottom of the instilling head is more uniformly distributed on the worm, the adding time of the lubricating oil can be reduced, the time is saved, the operation is convenient, and the efficiency is higher.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.

FIG. 1 is an isometric view of the overall structure of the present utility model;

FIG. 2 is a schematic isometric exploded view of the structure and other parts of the structure of the drive assembly of the present utility model;

FIG. 3 is a schematic isometric view of the meshing of the worm gear and worm of the present utility model;

fig. 4 is an isometric view of the connection structure of the reservoir housing, hose, control valve and drip head of the present utility model;

reference numerals: 1. a chassis; 2. an end cap; 3. a worm wheel; 4. a worm; 5. a moving block; 6. a drip head; 7. an oil storage shell; 8. a hose; 9. a control valve; 10. a drive assembly; 1001. a drive shaft; 1002. a roller; 1003. a spiral groove; 1004. a guide post; 11. a limit column; 12. a knob; 13. a bearing assembly; 14. an oil drain bolt; 15. an aerator; 16. and (5) observing the hole.

Detailed Description

The following describes in further detail the embodiments of the present utility model with reference to the drawings and examples. The following examples are illustrative of the utility model and are not intended to limit the scope of the utility model.

The installation mode, the connection mode or the setting mode of all the components are common mechanical modes, and the specific structure, the model and the coefficient index of all the components are of the technology of the worm and gear reducer for the front folding type anti-overturning electric wheelchair, so long as the beneficial effects can be achieved, the worm and gear reducer is not repeated.

In the worm gear reducer for the front folding type anti-overturning electric wheelchair, unless stated otherwise, the azimuth terms such as "up, down, left, right, front, back, inner and outer, vertical and horizontal" and the like contained in terms only represent the azimuth of the term under the normal use state or are commonly understood by those skilled in the art, and should not be construed as limiting the term, meanwhile, the numerical terms such as "first", "second", and "third" do not represent specific numbers and sequences, only for distinguishing the names, and the terms such as "comprising", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or apparatus including a series of elements includes not only those elements, but also other elements not explicitly listed, or also elements inherent to such process, method, article or apparatus.

As shown in fig. 1 to 4, a worm gear reducer for a forward folding type anti-overturning electric wheelchair comprises: the case 1 is provided with an opening on the outer wall and an end cover 2 at the opening; the worm wheel 3 is rotatably arranged below the inner part of the case 1; a worm 4 rotatably installed above the inside of the casing 1 and engaged with the worm wheel 3; the moving block 5 is slidably arranged in the case 1 along the axis direction of the worm 4, the moving block 5 is positioned above the worm 4, and the instillation head 6 is arranged at the bottom end of the moving block 5; an oil storage shell 7 is fixedly arranged at the top end of the case 1, a hose 8 is communicated between the oil storage shell 7 and the instillation head 6, and a control valve 9 is arranged on the hose 8; the case 1 is provided with a driving component 10 for driving the moving block 5 to slide back and forth along the axis direction of the worm 4;

the specific working principle is as follows: firstly, the oil storage shell 7 is filled with lubricating oil, when the worm 4 of the worm wheel 3 is required to be instilled with lubricating oil, the control valve 9 is opened, the lubricating oil in the oil storage shell 7 enters the instilling head 6 through the hose 8 and drips out of the output end at the bottom of the instilling head 6 onto the worm 4, and a worker drives the moving block 5 to slide back and forth along the axis direction of the worm 4 through the driving component 10, so that the lubricating oil dribbling out of the output end at the bottom of the instilling head 6 is more uniformly distributed on the worm 4, the adding time of the lubricating oil can be reduced, the time is saved, the operation is convenient, and the efficiency is higher.

Based on the above embodiment, the driving assembly 10 includes a driving shaft 1001, the driving shaft 1001 is mounted on the chassis 1 along the axis direction of the worm 4, one end of the driving shaft 1001 rotates to penetrate through the outer wall of the chassis 1, the circumferential outer wall of the driving shaft 1001 is fixedly sleeved with a roller 1002 at a position inside the chassis 1, a spiral groove 1003 is formed on the circumferential outer wall of the roller 1002, a guide post 1004 is fixedly arranged on one side of the moving block 5 facing the roller 1002, and one end of the guide post 1004 facing away from the moving block 5 slides and stretches into the spiral groove 1003;

in the specific implementation process, in the process of dropping out the lubricating oil from the bottom output end of the instillation head 6, a worker rotates the roller 1002 through the driving shaft 1001, and because the guide post 1004 slides and stretches into the spiral groove 1003 on the roller 1002, in the process of rotating the spiral groove 1003, the guide post 1004 moves along the axis direction of the roller 1002, and because the driving shaft 1001 and the roller 1002 are arranged on the case 1 along the axis direction of the worm 4, the guide post 1004 drives the moving block 5 to move along the axis direction of the worm 4, the worker performs forward and reverse reciprocating rotation on the driving shaft 1001, so that the instillation head 6 can realize the reciprocating movement above the worm 4, the instillation time of the lubricating oil can be shortened, and the efficiency is improved.

Based on the above embodiment, two limit posts 11 are fixedly arranged in the case 1 along the axis direction of the worm 4, the two limit posts 11 are all positioned above the worm 4, and the movable block 5 is slidably sleeved on the two limit posts 11;

during operation, the two limit posts 11 play a role in limiting and guiding the movable block 5, so that the movable block 5 moves smoothly in the reciprocating movement process and moves along the axis direction of the worm 4 all the time, and the stability is improved.

Based on the above embodiment, one end of the driving shaft 1001, which is located outside the chassis 1, is fixedly provided with a knob 12, and the circumferential outer wall of the knob 12 is provided with anti-skid patterns; the driving shaft 1001 is convenient to rotate through the knob 12, and the anti-slip effect can be achieved through the arrangement of the anti-slip patterns, so that the stability is improved.

Based on the embodiment, the worm 4 and the rotating connection part of the worm 4 and the case 1 are provided with bearing assemblies 13;

in the specific implementation process, the main function of the bearing assembly 13 is to support the mechanical rotating body, reduce the friction coefficient in the motion process and ensure the rotation precision, and the arrangement of the bearing assembly 13 reduces the friction resistance of the rotation of the worm wheel 3 and the worm 4, so as to improve the smoothness.

Based on the embodiment, the bottom end of the case 1 is provided with an oil drain hole, and an oil drain bolt 14 is arranged at the oil drain hole in a tightly threaded connection manner;

in the specific implementation process, the oil drain bolt 14 is screwed out of the oil drain hole, so that waste oil at the bottom end inside the case 1 can be discharged, and the operation is convenient.

Based on the embodiment, the top end of the case 1 is provided with a ventilator 15 in a communicating way; when the speed reducer runs, the temperature in the case 1 is increased due to friction heating, the air pressure is increased, and lubricating oil leaks outwards from the gap, so that the ventilator 15 is arranged at the top of the case 1, hot expanding air in the case 1 can escape freely, the air pressure inside and outside the case 1 is equal, and the sealing performance of the gap of the case 1 is improved.

Based on the embodiment, an observation hole 16 is formed in the outer wall of the case 1, a transparent plate is arranged at the observation hole 16, and the observation hole 16 is positioned at the right front side of the worm 4; the observation of the instillation condition of the lubricating oil is facilitated through the observation hole 16, and the controllability is improved.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present utility model, and these modifications and variations should also be regarded as the scope of the utility model.

Claims (8)

1. The utility model provides a roll over formula is worm gear reduction gear for electronic wheelchair of preventing turning over forward which characterized in that includes:

the case (1) is provided with an opening on the outer wall and an end cover (2) at the opening;

the worm wheel (3) is rotatably arranged below the inner part of the chassis (1);

the worm (4) is rotatably arranged above the inside of the case (1) and meshed with the worm wheel (3);

the moving block (5) is slidably arranged in the case (1) along the axis direction of the worm (4), the moving block (5) is positioned above the worm (4), and the instillation head (6) is arranged at the bottom end of the moving block (5);

an oil storage shell (7) is fixedly arranged at the top end of the case (1), a hose (8) is communicated between the oil storage shell (7) and the instillation head (6), and a control valve (9) is arranged on the hose (8);

the case (1) is provided with a driving component (10) for driving the moving block (5) to slide back and forth along the axis direction of the worm (4).

2. The worm gear reducer for a forward folding type anti-overturning electric wheelchair according to claim 1, wherein the driving assembly (10) comprises a driving shaft (1001), the driving shaft (1001) is arranged on the chassis (1) along the axis direction of the worm (4), one end of the driving shaft (1001) rotates to penetrate through the outer wall of the chassis (1), a roller (1002) is sleeved on the circumferential outer wall of the driving shaft (1001) at a position inside the chassis (1), a spiral groove (1003) is formed in the circumferential outer wall of the roller (1002), a guide post (1004) is fixedly arranged on one side, facing the roller (1002), of the moving block (5), and one end, facing away from the moving block (5), of the guide post (1004) slides into the spiral groove (1003).

3. The worm and gear reducer for the forward folding type anti-overturning electric wheelchair according to claim 1 is characterized in that two limit posts (11) are fixedly arranged in the chassis (1) along the axis direction of the worm (4), the two limit posts (11) are located above the worm (4), and the moving block (5) is slidably sleeved on the two limit posts (11).

4. The worm gear reducer for the forward folding type anti-overturning electric wheelchair according to claim 2, wherein a knob (12) is fixedly arranged at one end of the driving shaft (1001) positioned outside the chassis (1), and anti-skidding patterns are arranged on the circumferential outer wall of the knob (12).

5. The worm gear reducer for the forward folding type anti-overturning electric wheelchair according to claim 1 is characterized in that a bearing assembly (13) is arranged at the rotating connection part of the worm (4) and the case (1) and the worm (4).

6. The worm gear reducer for the forward folding type anti-overturning electric wheelchair according to claim 1, wherein an oil drain hole is formed in the bottom end of the chassis (1), and an oil drain bolt (14) is arranged at the oil drain hole in a tightly threaded connection mode.

7. The worm gear reducer for the forward folding type anti-overturning electric wheelchair according to claim 1, wherein a breather (15) is arranged at the top end of the case (1) in a communicating manner.

8. The worm gear reducer for the forward folding type anti-overturning electric wheelchair according to claim 1, wherein an observation hole (16) is formed in the outer wall of the chassis (1), a transparent plate is arranged at the observation hole (16), and the observation hole (16) is positioned at the right front side of the worm (4).