CN216279235U

CN216279235U - Gap eliminating mechanism and conveying device

Info

Publication number: CN216279235U
Application number: CN202122981663.4U
Authority: CN
Inventors: 高超; 张晨宇; 王健
Original assignee: Sany Robot Technology Co Ltd
Current assignee: Sany Robot Technology Co Ltd
Priority date: 2021-11-30
Filing date: 2021-11-30
Publication date: 2022-04-12
Anticipated expiration: 2031-11-30

Abstract

The utility model provides a gap eliminating mechanism and a conveying device. When the anti-backlash mechanism is used, the first meshing component is arranged at the driving end of the first driving mechanism, the first meshing component is located at the bottom of the supporting seat component and located on one side of the second meshing component, the elastic component applies pressing force towards the second meshing component to the supporting seat component, the supporting seat component rotates around the first end of the supporting seat component, the second end of the supporting seat component rotates towards the second meshing component and synchronously drives the first meshing component to deflect towards the second meshing component, the first meshing component automatically presses towards the second meshing component, so that the gap between the first meshing component and the second meshing component is automatically adjusted, accurate meshing of the first meshing component and the second meshing component is achieved, manual operation is not needed, the gap between the first meshing component and the second meshing component is adjusted conveniently and quickly, and the meshing degree and the transmission precision between the first meshing component and the second meshing component can be effectively guaranteed.

Description

Gap eliminating mechanism and conveying device

Technical Field

The utility model relates to the technical field of gear meshing adjustment, in particular to a clearance eliminating mechanism and a conveying device.

Background

Some transportation devices, such as robotic ground rails, include a track, a support plate slidably disposed on the track, and a drive assembly including a rotary drive mechanism, a gear disposed at a drive end of the rotary drive mechanism, and a rack disposed on the track. In order to ensure the normal transmission of the gear and the rack, the clearance between the gear and the rack needs to be adjusted in a proper range so as to ensure that the reference circles of the gear and the rack are superposed.

The gear rack clearance adjusting mechanism in the prior art adjusts the clearance between the gear and the rack by manually screwing a screw, the manual adjustment of the distance is difficult, the operation is time-consuming, the adjustment can be completed after a long time by a skillful worker during equipment debugging, and the unreasonable clearance adjustment condition still exists after the adjustment, so that the support plate is inaccurate in the reciprocating movement process of the gear rack transmission, and the clearance between the gear and the rack needs to be adjusted again.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model aims to overcome the defects that the gap adjusting mechanism in the prior art adjusts the gap between the gear and the rack in a way of manually screwing a screw, so that the adjustment is difficult and time-consuming, and provides the gap eliminating mechanism and the conveying device.

In order to solve the problems, the utility model provides a gap eliminating mechanism which comprises a supporting plate, a supporting seat assembly, a first driving mechanism and a pressing assembly. The first end of the supporting seat assembly is rotatably arranged on the supporting plate; the first driving mechanism is arranged on the supporting seat component; the pressing assembly comprises a first fixed seat, a fixed shaft and an elastic part; the first fixing seat is fixedly arranged on the supporting plate, the fixing shaft penetrates through the second end of the supporting seat component and the first fixing seat, the elastic component is sleeved on the fixing shaft, and two ends of the elastic component are respectively abutted against the supporting seat component and one end of the fixing shaft, which is far away from the first fixing seat.

Optionally, in the gap eliminating mechanism, the driving mechanism is arranged on the supporting seat; the supporting seat comprises a supporting seat outer wall, a first fixing seat, a fixed shaft, an abutting piece, an elastic piece and a second fixing seat, wherein the abutting piece is convexly arranged on the outer wall of the supporting seat and is arranged opposite to the first fixing seat, the fixed shaft penetrates through the abutting piece and the first fixing seat, and two ends of the elastic piece are abutted to the abutting piece and the fixed shaft respectively.

Optionally, the gap eliminating mechanism further comprises a rotating shaft arranged on the supporting plate, and the supporting seat is rotatably sleeved on the rotating shaft.

Optionally, the gap eliminating mechanism further includes a buffer mechanism disposed on the support plate, and one end of the buffer mechanism is connected to the support seat assembly to reduce the impact of the starting impact force on the support seat assembly when the first driving mechanism is started.

Optionally, in the above anti-backlash mechanism, the damping mechanism is a hydraulic damper.

Optionally, the gap eliminating mechanism further includes a rotation limiting member disposed on the supporting plate, and the rotation limiting member is disposed at one side of the supporting seat assembly at an interval so as to limit a rotation angle of the supporting seat assembly when the first driving mechanism is started.

Optionally, the gap eliminating mechanism further comprises a vertical limiting part arranged on the supporting plate, and the top of the vertical limiting part is located outside the top surface of the supporting seat so as to limit the vertical moving distance of the supporting seat.

Optionally, in the gap eliminating mechanism, the support seat is provided with a yielding hole, the vertical limiting member is arranged in the yielding hole in a penetrating manner, the top of the vertical limiting member is located outside the yielding hole, and the yielding hole can allow the support seat assembly to rotate around the vertical limiting member.

The utility model provides a transportation device which comprises any one of the gap eliminating mechanisms, a track, a first meshing part arranged at the driving end of the first driving mechanism and a second meshing part meshed with the first meshing part and arranged in the track, wherein the supporting plate is arranged on the track in a sliding mode.

Optionally, in the transportation device, the first driving mechanism is a rotary driving mechanism, the first engaging member is a gear, and the second engaging member is a rack.

The utility model has the following advantages:

1. by utilizing the technical scheme of the utility model, when the gap eliminating mechanism is used, the first meshing component is arranged at the driving end of the first driving mechanism, the first meshing component is positioned at the bottom of the supporting seat component, the first meshing component is positioned at one side of the second meshing component, the elastic component applies pressing force towards the second meshing component to the supporting seat component, the supporting seat component rotates around the first end of the supporting seat component, the second end of the supporting seat component rotates towards the second meshing component, and synchronously drives the first meshing component to deflect towards the second meshing component, so that the first meshing component automatically presses towards the second meshing component, the gap between the first meshing component and the second meshing component is automatically adjusted, accurate meshing between the first meshing component and the second meshing component is realized, manual operation is not needed, the gap between the first meshing component and the second meshing component is conveniently and quickly adjusted, and the meshing degree and the transmission precision between the first meshing component and the second meshing component can be effectively ensured.

2. The both ends of elastic component butt piece and fixed axle respectively are convenient for wear to establish the fixed axle on butt piece and first fixing base.

3. One end of the buffer mechanism is connected with the supporting seat assembly so as to reduce the impact of the starting impact force on the supporting seat assembly when the first driving mechanism is started, and protect the first driving mechanism and the supporting seat assembly.

4. The rotating limiting parts are arranged on one side of the supporting seat assembly at intervals so as to limit the rotating angle of the supporting seat assembly when the first driving mechanism is started, and the supporting seat is prevented from driving the first meshing part to be back to the second meshing part to cause the first meshing part and the second meshing part to be disengaged from each other due to the fact that the rotating angle of the first meshing part is too large.

5. The top of the vertical locating part is positioned outside the top surface of the supporting seat so as to limit the vertical moving distance of the supporting seat.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic perspective view illustrating a backlash mechanism provided in embodiment 1 of the present invention;

fig. 2 is a front view showing an anti-backlash mechanism provided in embodiment 1 of the present invention;

fig. 3 is a plan view showing the backlash mechanism provided in embodiment 1 of the present invention.

Description of reference numerals:

1-a support base assembly; 11-a support seat; 111-abdication holes; 12-an abutment; 2-a first drive mechanism; 31-a first fixed seat; 32-a fixed shaft; 33-an elastic member; 4-a rotating shaft; 5-a buffer mechanism; 6-rotation limiting piece; 7-a vertical stop; 8-a second fixed seat; 9-gear; 10-rack.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Example 1

As shown in fig. 1 to 3, the present embodiment provides a backlash eliminating mechanism, which includes a supporting plate (not shown), a supporting seat assembly, a first driving mechanism 2 and a pressing assembly, wherein a first end of the supporting seat assembly is rotatably disposed on the supporting plate; the first driving mechanism 2 is arranged on the supporting seat component; the compressing assembly comprises a first fixed seat 31, a fixed shaft 32 and an elastic piece 33; the first fixing seat 31 is fixedly arranged on the supporting plate, the fixing shaft 32 penetrates through the second end of the supporting seat assembly and the first fixing seat 31, the elastic element 33 is sleeved on the fixing shaft 32, and two ends of the elastic element 33 are respectively abutted to one ends of the supporting seat assembly and the fixing shaft 32, which are deviated from the first fixing seat 31.

When the gap eliminating mechanism is used, the first meshing part is arranged at the driving end of the first driving mechanism 2 and is positioned at the bottom of the supporting seat assembly 1, the first meshing part is positioned on one side of the second meshing part, the elastic part 33 applies pressing force towards the second meshing part to the supporting seat assembly 1, the supporting seat assembly 1 rotates around the first end of the supporting seat assembly, the second end of the supporting seat assembly 1 rotates towards the second meshing part and synchronously drives the first meshing part to deflect towards the second meshing part, the first meshing part automatically presses towards the second meshing part, so that a gap between the first meshing part and the second meshing part is automatically adjusted, accurate meshing of the first meshing part and the second meshing part is achieved, manual operation is not needed, the gap between the first meshing part and the second meshing part is adjusted conveniently and rapidly, and the meshing degree and the transmission precision between the first meshing part and the second meshing part can be effectively guaranteed.

Further, referring to fig. 1, the supporting seat assembly includes a supporting seat 11 and an abutting piece 12 disposed on the supporting seat 11; the first driving mechanism 2 is arranged on the supporting seat 11; the abutting part 12 is convexly arranged on the outer wall of the supporting base 11 and is arranged opposite to the first fixing base 31, the fixing shaft 32 is arranged on the abutting part 12 and the first fixing base 31 in a penetrating mode, two ends of the elastic part 33 abut against the abutting part 12 and the fixing shaft 32 respectively, and the fixing shaft 32 is convenient to penetrate through the abutting part 12 and the first fixing base 31.

Alternatively, the supporting seat 11 is flat, the abutting member 12 and the first fixing seat 31 are rectangular blocks, the first fixing seat 31 is fixed on the supporting plate by screws, the abutting member 12 is welded on the side wall of the supporting seat 11, and the abutting member 12 is firmly fixed with the supporting seat 11. The elastic member 33 is a spring, a gap between the first engaging member and the second engaging member is adjustable by an elastic force of the spring, when the gap between the first engaging member and the second engaging member is required to be small, the spring having a large elastic coefficient is used to press the first engaging member more toward the second engaging member, and when the gap between the first engaging member and the second engaging member is required to be large, the spring having a slightly small elastic coefficient is used to maintain a desired proper gap between the first engaging member and the second engaging member. The fixing shaft 32 is a long bolt, the long bolt penetrates through the first fixing seat 31 and the abutting part 12, a nut is screwed at one end of the long bolt far away from the first fixing seat 31, and two ends of the spring abut against the abutting part 12 and the nut respectively. As a modification, the elastic member 33 may be any other structure capable of applying the pressing force to the contact member 12.

Referring to fig. 1, the anti-backlash mechanism further includes a rotating shaft 4 disposed on the supporting plate, the supporting seat 11 is rotatably sleeved on the rotating shaft 4, so that the first end of the supporting seat 11 is rotatably disposed on the supporting plate, and the spring applies a pressing force to the abutting member 12, so that the supporting seat 11 rotates around the rotating shaft 4. Referring to fig. 3, the supporting seat 11 is a square plate, the first protruding portion and the second protruding portion are respectively disposed on the oblique opposite angles of the supporting seat 11, the rotating shaft 4 penetrates through the first protruding portion, the abutting member 12 is disposed on the second protruding portion, the first protruding portion is a first end of the supporting seat 11, the second protruding portion is a second end of the supporting seat 11, the first end and the second end of the supporting portion are diagonally disposed, and the spring applies a small force to the first end of the supporting seat 11 to enable the supporting seat 11 to deflect at a large angle, so that the first engaging member presses the second engaging member.

Referring to fig. 1 and 3, the gap eliminating mechanism further includes a second fixing seat 8 fixedly disposed on the supporting plate and a buffering mechanism 5 disposed on the supporting plate, one end of the buffering mechanism 5 is connected to the supporting seat assembly to reduce the impact of the starting impact force on the supporting seat assembly when the first driving mechanism 2 is started, so as to protect the first driving mechanism 2 and the supporting seat assembly. Optionally, the buffering mechanism 5 is a hydraulic buffer, one end of the hydraulic buffer is inserted into the second fixing seat 8, and the other end of the hydraulic buffer is connected to the abutting member 12. The buffer mechanism 5 may be any member having a buffer function, such as a spring, a rubber ring, or a sponge ring.

Preferably, referring to fig. 1 and 3, the backlash eliminating mechanism further includes a rotation limiting member 6 disposed on the support plate and a vertical limiting member 7 disposed on the support plate, wherein the rotation limiting member 6 is disposed at an interval on one side of the support seat assembly to limit a rotation angle of the support seat assembly when the first driving mechanism 2 is started, so as to prevent the support seat 11 from driving the first engaging member to rotate away from the second engaging member by an excessively large rotation angle, which results in disengagement of the first engaging member and the second engaging member. For example, the rotation limiting member 6 is disposed on a side of the supporting seat 11, the rotation limiting member 6 is a screw penetrating through the second fixing seat 8, and a disc-shaped stopping portion is disposed at an end of the rotation limiting member 6 close to the supporting seat 11, and when the first driving mechanism 2 is started to cause the supporting seat 11 to jump away from the second engaging member, the supporting seat 11 abuts against the disc-shaped stopping portion to limit the rotation angle of the supporting seat 11 to be too large.

The top of the vertical limiting part 7 is located outside the top of the supporting seat 11 to limit the vertical moving distance of the supporting seat 11. When the first driving mechanism 2 is started, the supporting seat 11 vibrates up and down due to vibration of the first driving mechanism, and at the moment, the top of the vertical limiting part 7 abuts against the top surface of the supporting seat 11, so that the supporting seat 11 is prevented from moving upwards for too long distance.

Further, referring to fig. 1 and 3, the support seat 11 is provided with a yielding hole 111, the vertical limiting member 7 is inserted into the yielding hole 111, and the top of the vertical limiting member is located outside the yielding hole, and the yielding hole 111 is used for the support seat assembly to rotate around the vertical limiting member 7. For example, the receding hole 111 is an arc-shaped hole, the vertical limiting member 7 is an equal-height bolt, a screw end of the equal-height bolt is screwed on the supporting seat 11, a head of the equal-height bolt is located above the supporting seat 11, and the head of the equal-height bolt abuts against the top surface of the supporting seat 11 to prevent the supporting seat 11 from jumping upwards for an excessively large distance.

The anti-backlash mechanism further comprises a mounting plate, the mounting plate is fixed on the supporting seat 11 through bolts, the first driving mechanism 2 is mounted on the mounting plate, a driving shaft of the first driving mechanism extends to the bottom of the supporting seat 11, and the first engaging piece is suitable for being mounted at a driving end of the first driving mechanism.

Example 2

This embodiment provides a transportation apparatus, which includes the backlash eliminating mechanism in embodiment 1, a rail, a first engaging member provided at a driving end of the first driving mechanism 2, and a second engaging member engaged with the first engaging member and provided in the rail, wherein the support plate is slidably provided on the rail.

The conveying device presses the first meshing part to the second meshing part through the pressing force of the spring so as to adjust the gap between the first meshing part and the second meshing part, accurate meshing of the first meshing part and the second meshing part is achieved, manual operation is not needed, the gap between the first meshing part and the second meshing part is convenient and rapid to debug, and the meshing degree and the transmission precision between the first meshing part and the second meshing part can be effectively guaranteed.

The first driving mechanism is a rotation driving mechanism, for example, the rotation driving mechanism is a speed reducing motor, the first meshing part is a gear 9, the second meshing part is a rack 10, the transportation device is a robot ground rail, the rack 10 is arranged in a track of the robot ground rail, and the gear 9 is arranged on a driving shaft of the speed reducing motor. The spring applies a pressing force to the abutment 12 towards the rack 10 to rotate the support 11 about the rotation axis 4 towards the rack 10, thereby pressing the gear 9 towards the rack 10 to keep the two in an effective meshing state. The distance between the rotation limiting piece 6 and the supporting seat 11 is enough to ensure that the rotating distance of the supporting seat 11 back to the rack 10 is not more than the length of one gear tooth of the gear 9, so that the gear 9 is prevented from jumping when being impacted.

As a variant, the first engagement member may be a worm gear, and correspondingly the second engagement member is a worm; or the first meshing part is a gear 9, and the second meshing part is the gear 9, namely the first meshing part and the second meshing part can be any parts capable of meshing with each other, and the anti-backlash mechanism can be used for any part needing to adjust the meshing clearance.

According to the above description, the present patent application has the following advantages:

1. the anti-backlash mechanism can be perfectly combined with a ground rail, a truss and other moving unit mechanisms, so that the gap between the gear 9 and the rack 10 can be automatically adjusted, impact can be prevented, and a protective effect is realized on a speed reduction motor and the like;

2. the time waste caused by adjusting the clearance of the gear 9 for multiple times is avoided, the working efficiency is improved, the installation operation is easy, and the technical threshold of structure installation and debugging is reduced.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the utility model.

Claims

1. A gap eliminating mechanism is characterized by comprising

A support plate;

the first end of the supporting seat assembly is rotatably arranged on the supporting plate;

the first driving mechanism (2) is arranged on the supporting seat component;

the pressing assembly comprises a first fixed seat (31), a fixed shaft (32) and an elastic piece (33); the first fixing seat (31) is fixedly arranged on the supporting plate, the fixing shaft (32) penetrates through the second end of the supporting seat assembly and the first fixing seat (31), the elastic piece (33) is sleeved on the fixing shaft (32), and two ends of the elastic piece (33) are respectively abutted to the supporting seat assembly and one end, deviating from the first fixing seat (31), of the fixing shaft (32).

2. The anti-backlash mechanism according to claim 1, wherein the shoe assembly comprises a shoe (11) and an abutment (12) provided on the shoe (11); the first driving mechanism (2) is arranged on the supporting seat (11); the abutting part (12) is convexly arranged on the outer wall of the supporting seat (11) and is opposite to the first fixing seat (31), the fixing shaft (32) penetrates through the abutting part (12) and the first fixing seat (31), and two ends of the elastic part (33) are respectively abutted against the abutting part (12) and the fixing shaft (32).

3. The backlash mechanism according to claim 2, further comprising a rotating shaft (4) provided on the support plate, wherein the support seat (11) is rotatably fitted over the rotating shaft (4).

4. The backlash mechanism according to claim 2 or 3, further comprising a damping mechanism (5) provided on the support plate, wherein one end of the damping mechanism (5) is connected to the shoe assembly to reduce the impact of the starting impact force on the shoe assembly when the first drive mechanism (2) is started.

5. The backlash mechanism according to claim 4, wherein said damping mechanism (5) is a hydraulic damper.

6. The backlash mechanism according to any one of claims 1 to 3, further comprising a rotation limiter (6) provided on the support plate, wherein the rotation limiter (6) is spaced apart from one side of the support seat assembly to limit a rotation angle of the support seat assembly when the first drive mechanism (2) is activated.

7. The anti-backlash mechanism according to any one of claims 1 to 3, further comprising a vertical limiting member (7) provided on the support plate, wherein the top of the vertical limiting member (7) is located outside the top surface of the support seat (11) to limit the vertical moving distance of the support seat (11).

8. The backlash mechanism according to claim 7, wherein the supporting seat (11) is provided with a yielding hole (111), the vertical limiting member (7) is inserted into the yielding hole (111) and the top of the vertical limiting member is located outside the yielding hole, and the yielding hole (111) allows the supporting seat assembly to rotate around the vertical limiting member (7).

9. A transport device, characterized in that it comprises an anti-backlash mechanism according to any one of claims 1 to 8, a track, a first engaging member provided at the drive end of the first drive mechanism (2), and a second engaging member engaging with the first engaging member and provided in the track, and the support plate is slidably provided on the track.

10. A transportation device according to claim 9, characterized in that the first drive mechanism (2) is a rotary drive mechanism, the first engagement member is a gear wheel (9) and the second engagement member is a rack (10).