CN210734344U - Wheel assembly switching mechanism - Google Patents
Wheel assembly switching mechanism Download PDFInfo
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- CN210734344U CN210734344U CN201921415477.0U CN201921415477U CN210734344U CN 210734344 U CN210734344 U CN 210734344U CN 201921415477 U CN201921415477 U CN 201921415477U CN 210734344 U CN210734344 U CN 210734344U
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Abstract
The utility model provides a wheel component switching mechanism, which comprises a mounting frame, a first connecting frame, a second connecting frame and a lifting structure; the lifting structure comprises a lifting device and a lifting connecting rod, the middle part of the lifting connecting rod is hinged with the mounting frame, and the first connecting frame and the second connecting frame are respectively arranged on the front side and the rear side of the middle part of the lifting connecting rod; the lifting device is used for driving the lifting connecting rod to swing back and forth around the hinged position of the lifting connecting rod and the mounting frame so as to enable the first connecting frame and the second connecting frame to descend in turn; the utility model discloses a wheel subassembly switching mechanism is equipped with two links to through two link up-and-down motion of elevation structure drive, thereby make the AGV that uses this wheel subassembly switching mechanism can land according to the wheel that actual production needs switched different specifications.
Description
Technical Field
The utility model relates to a AGV drive arrangement field especially indicates wheel subassembly switching mechanism.
Background
AGV is a transport speed is fast, and the automatic transportation equipment that material capacity is big, but current AGV equipment has following problem: when the AGV equipment needs to translate or turn around and steer, the AGV equipment can be subjected to rolling resistance, gradient resistance, acceleration resistance, convolution resistance and other resistance from wheels arranged at the bottom, and in order to improve the starting speed and the accuracy of a stopping position of the AGV equipment, the wheels with smaller diameters need to be selected to move; however, when the AGV equipment needs to move linearly for a long distance, the AGV equipment is limited by the size of the wheels, and the moving speed of the AGV equipment cannot be further increased, so that the transportation efficiency of the AGV equipment cannot be maximized.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's is not enough, provides a wheel subassembly switching mechanism, is equipped with two links to through two link up-and-down motion of elevation structure drive, thereby make the AGV that uses this wheel subassembly switching mechanism can switch the wheel of different specifications according to the actual production needs and land.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the wheel assembly switching mechanism comprises a mounting frame, a first connecting frame, a second connecting frame and a lifting structure; the lifting structure comprises a lifting device and a lifting connecting rod, the middle part of the lifting connecting rod is hinged with the mounting frame, and the first connecting frame and the second connecting frame are respectively arranged on the front side and the rear side of the middle part of the lifting connecting rod; the lifting device is used for driving the lifting connecting rod to swing back and forth around the hinged position of the lifting connecting rod and the mounting frame, so that the first connecting frame and the second connecting frame descend in turn.
Compared with the prior art, the wheel assembly switching mechanism of the utility model has the technical effects of simple structure and high response speed by using the lifting structure consisting of the lifting device and the lifting connecting rod to lift the first connecting frame and the second connecting frame in turn to make the first connecting frame and the second connecting frame descend in turn; through respectively at first link set up the wheel on the second link, can realize two wheel actions of simultaneous operation, realize the switching of wheel, and when enabling one of them wheel to be in the decline state, another wheel is in the state of rising, ensures the synchronism of two wheel motions, avoids appearing because two wheels land simultaneously, causes the speed difference of a plurality of contact points of wheel subassembly switching mechanism to ground and the unable normal condition of removing of AGV equipment appears.
Preferably, the lifting device is an electric push rod or an electric cylinder, the lifting device is arranged on the mounting frame, and the telescopic end of the lifting device is hinged with the front end or the rear end of the lifting connecting rod; during the elevating gear function, elevating gear lifts or drop-down the front end or the rear end of lift connecting rod make the lift connecting rod around its with the articulated department luffing motion of mounting bracket, this kind of mode of setting simple structure, low cost, the installation and the adjustment of being convenient for, and electric putter, electric cylinder lifting capacity are stronger to can stabilize the great wheel of lifting diameter, improve the switching speed of wheel.
Preferably, the lifting device is a forward and reverse rotation motor, and the lifting device is arranged at the hinged position of the lifting connecting rod and the mounting frame; when the lifting device operates, the lifting connecting rod swings back and forth around the hinged position of the lifting connecting rod and the mounting frame. The arrangement mode enables the internal structure of the wheel assembly switching mechanism to be more compact, so that the space occupied by the wheel assembly switching mechanism is reduced, a manufacturer can install the wheel assembly switching mechanism on AGV equipment conveniently, in addition, the forward and reverse rotation of the output end of the forward and reverse rotating motor is controlled to drive the lifting connecting rod to swing back and forth, the operation is simple, and the control difficulty is effectively reduced.
Preferably, the first connecting frame comprises a first main body and a first fastener, and the first fastener is arranged on the upper part of the first main body; the second connecting frame comprises a second main body and a second fastening piece, and the second fastening piece is arranged on the second main body; a first connecting piece and a second connecting piece are arranged on the lifting connecting rod and positioned at the front side and the rear side of the middle part of the lifting connecting rod; the first connecting frame is arranged on the first connecting piece, and the second connecting frame is arranged on the second connecting piece.
In addition, the first connecting frame is connected with the lifting connecting rod through a first fastening piece, the second connecting frame is connected with the lifting connecting rod through a second fastening piece, and a manufacturer can connect the first connecting frame/the second connecting frame with the lifting connecting rod in multiple modes by adjusting the structure of the first fastening piece/the second fastening piece, so that the setting difficulty is reduced; in addition, supply through setting up first connecting piece, second connecting piece first link, second link connection installation can avoid the body of rod lug connection of first link, second link and lift connecting rod, lead to the in-process of lift connecting rod fore-and-aft swing, first link, second link are impaired because of friction, collision with the junction of lift connecting rod to reduce the maintenance cost, prolong the life of spare part simultaneously.
The first connecting pieces and the second connecting pieces are respectively provided with two, and the two first connecting pieces and the two second connecting pieces are oppositely arranged on the left side and the right side of the lifting connecting rod; the first fastening pieces are connected with the two first connecting pieces, and the second fastening pieces are connected with the two second connecting pieces.
The arrangement mode enables the first connecting frame and the second connecting frame to be connected with two sides of the lifting connecting rod, so that the connection strength of the first connecting frame and the second connecting frame with the lifting connecting rod is improved, and the first connecting frame and the second connecting frame are connected with the lifting connecting rod more stably.
The utility model provides a connected mode of two kinds of first link, second link and lifting connection rod:
the first method comprises the following steps: the first buckling piece is hinged with the lifting connecting rod, and can rotate around the hinged position of the first buckling piece and the lifting connecting rod; the second fastening piece is hinged with the lifting connecting rod, and can rotate around the hinged position of the second fastening piece and the lifting connecting rod; the arrangement mode is low in cost, assembly difficulty is effectively reduced, assembly time is shortened, and production efficiency is improved.
And the second method comprises the following steps: the first connecting piece and the second connecting piece are rollers; the first buckling groove is formed in the first buckling piece, and the first buckling piece is buckled into the first buckling groove; and a second buckling groove is formed in the second buckling piece, and the second connecting piece is buckled into the second buckling groove.
Because first connecting piece, second connecting piece are the gyro wheel, but relative lift connecting rod rotates, make first connecting piece second connecting piece with lift connecting rod swing joint to offset produced lateral shifting weight when the lift connecting rod swings, make the lift connecting rod under the condition of any angle of slope, first connecting piece second connecting piece all the time with first link span, second link span firm the connection, avoid first link span second link span takes place to loosen with the lift connecting rod, thereby make first link span second link span only does the luffing motion relative lift connecting rod.
Preferably, the connection point of the first connecting piece and the lifting connecting rod, the connection point of the second connecting piece and the lifting connecting rod, and the hinge point of the lifting connecting rod and the mounting rack are located on the same straight line.
Through making first connecting piece, second connecting piece and the pin joint of lifting connecting rod and mounting bracket is located same axis, inject first connecting piece, second connecting piece and arrive the distance of the pin joint of lifting connecting rod and mounting bracket to the moment of adjustment first link, second link reduces the required power of elevating gear drive lifting connecting rod luffing motion, reduces the energy consumption.
Preferably, the bicycle further comprises a first wheel assembly and a second wheel assembly; the first connecting frame is arranged on the lower side of the lifting connecting rod, and the first wheel body is arranged on the lower side of the lifting connecting rod through the first connecting frame; the second connecting frame is arranged on the upper side of the lifting connecting rod, and the second wheel body is arranged on the outer side of the lifting connecting rod through the second connecting frame.
Through with first link sets up the lifting connecting rod downside, the second link sets up the lifting connecting rod outside, can make full use of wheel subassembly switching mechanism's inner space, make first link and the setting of staggering of second link, effectively reduce the space that wheel subassembly switching mechanism occupy, simultaneously, the second link sets up lifting connecting rod upside, can avoid the second link rise or when descending with the lifting connecting rod takes place to interfere to ensure wheel subassembly switching mechanism's normal use.
Preferably, a first guide mechanism is arranged between the mounting frame and the first wheel assembly, and a second guide mechanism is arranged between the mounting frame and the second wheel assembly; the first guide mechanism comprises a first guide piece and a first sliding piece; the first guide piece is vertically arranged on the mounting frame, and the first sliding piece is arranged on the first wheel assembly corresponding to the first guide piece, or the first sliding piece is arranged on the mounting frame, the first guide piece is vertically arranged on the first wheel assembly corresponding to the first sliding piece, and the first sliding piece is connected with the first guide piece in a sliding manner; the second guide mechanism comprises a second guide piece and a second sliding piece, the second guide piece is vertically arranged on the mounting frame, the second sliding piece is arranged on the second wheel assembly corresponding to the second guide piece, or the second sliding piece is arranged on the mounting frame, the second guide piece is vertically arranged on the second wheel assembly corresponding to the second sliding piece, and the second sliding piece is connected with the second guide piece in a sliding mode.
In the above setting mode, through the mounting bracket with set up guiding mechanism between first wheel subassembly, the second wheel subassembly, thereby it is right the range of motion of first wheel subassembly, second wheel subassembly is restricted, makes first wheel subassembly, second wheel subassembly are relative vertical up-and-down motion can only be made to the mounting bracket, ensures that wheel subassembly switching mechanism can the stable drive first wheel subassembly, second wheel subassembly are to appointed orientation up-and-down motion, improve the reliability of wheel subassembly switching mechanism, in addition, this kind of setting mode can avoid because first wheel subassembly, second wheel subassembly are to the non-directional motion of a plurality of directions, lead to the unable normal drive AGV of actuating mechanism to remove.
Drawings
Fig. 1 is a schematic top view of the present invention;
FIG. 2 is a schematic view of the first wheel assembly of the present invention in operation at ground contact;
FIG. 3 is a schematic view of the second wheel assembly landing operation of the present invention;
fig. 4 is an exploded top view of the present invention;
fig. 5 is an exploded bottom view of the present invention;
FIG. 6 is a schematic view of a first link frame and a first wheel assembly;
FIG. 7 is a cross-sectional view of a first wheel assembly;
FIG. 8 is a schematic view of the mounting bracket and lifting structure assembly;
FIG. 9 is a top angled cross-sectional view of the mounting bracket and lifting structure assembled;
FIG. 10 is a horizontal angled cross-sectional view of the mounting bracket and lifting structure assembled;
FIG. 11 is an assembled schematic view of the second attachment bracket and the second wheel assembly;
FIG. 12 is a schematic view of a second attachment bracket and a second wheel assembly;
FIG. 13 is a schematic view of a second wheel assembly;
FIG. 14 is a cross-sectional view of a second wheel assembly;
FIG. 15 is an operational schematic of a first wheel assembly landing of the straddle-variable drive mechanism;
FIG. 16 is a cross-sectional view of a first wheel assembly landing of the straddle-variable drive mechanism;
FIG. 17 is a ground-engaging operational schematic of the second wheel assembly of the straddle-variable drive mechanism;
FIG. 18 is a cross-sectional view of a second wheel assembly landing of the straddle variable speed drive mechanism;
FIG. 19 is an assembled schematic view of the first wheel assembly and the drive device;
FIG. 20 is an assembled schematic view of the second wheel assembly and the drive train;
FIG. 21 is a schematic view of a second wheel assembly, drive train.
Description of reference numerals:
1 wheel assembly switching mechanism, 11 mounting bracket, 12 mounting cross bar, 13 connecting frame, 2 first wheel assembly, 21 first wheel, 22 first connecting bracket, 23 first body, 24 first fastening piece, 25 first fastening groove, 3 second wheel assembly, 31 second wheel, 32 second connecting bracket, 33 second body, 34 second fastening piece, 35 second fastening groove, 4 lifting structure, 41 lifting device, 42 lifting connecting rod, 43 first connecting piece, 44 second connecting piece, 5 cross-gear variable speed driving mechanism, 51 driving device, 52 first driving friction piece, 53 driving friction piece, 541 second driving friction piece, 542 second driving friction piece, 55 fixing bracket, 56 fixing part, 57 connecting part, 6 first guiding mechanism, 61 first guiding piece, 62 first sliding piece, 7 second guiding mechanism, 71 second guiding piece, 72 second sliding piece, 8 first floating supporting mechanism, 81 first mounting plate, 82 first guard plate, 83 first elastic piece, 84 first guide post, 85 first locking piece, 86 first mounting seat, 87 first mounting part, 88 first mounting protrusion, 89 first guide sleeve, 9 second floating support mechanism, 91 second mounting plate, 92 second guard plate, 93 second elastic piece, 94 second guide post, 95 second locking piece, 96 second mounting seat, 960 second mounting part, 97 second mounting protrusion and 98 second guide sleeve.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings:
example one
Referring to fig. 1 to 14, a wheel assembly switching mechanism 1 of the present embodiment includes a mounting bracket 11, a first wheel assembly 2, a second wheel assembly 3, a first connecting bracket 22, a second connecting bracket 32, and a lifting structure 4; the lifting structure 4 comprises a lifting device 41 and a lifting connecting rod 42, the middle part of the lifting connecting rod 42 is hinged with the mounting frame 11, and the first connecting frame 22 and the second connecting frame 32 are respectively arranged at the front side and the rear side of the middle part of the lifting connecting rod 42; the lifting device 41 is used for driving the lifting connecting rod 42 to swing back and forth around the hinged position of the lifting connecting rod and the mounting frame 11, so that the first connecting frame 22 and the second connecting frame 32 descend in turn.
The first wheel body 21 is connected to the lifting link rod 42 through the first connecting frame 22, and the second connecting frame 32 is connected to the lifting link rod 42 through the second connecting frame 32. Through setting up first link 22, second link 32, be convenient for the production personnel to install first wheel subassembly 2, second wheel subassembly 3 to and through choosing for use first link 22, the second link 32 of different specifications, can adjust first wheel subassembly 2 the relative position of second wheel subassembly 3 and lifting link 42 reduces the adjustment degree of difficulty of the setting position of the spare part of wheel subassembly switching mechanism 1.
Specifically, the mounting frame 11 is a hollow frame, the mounting frame 11 is provided with a mounting cross rod 12, and the lifting connecting rod 32 is hinged to the mounting cross rod 12.
The lifting device 41 is an electric push rod or an electric cylinder, the lifting device 41 is arranged on the mounting frame 11, and the telescopic end of the lifting device 41 is hinged with the front end or the rear end of the lifting connecting rod 42; when the lifting device 41 operates, the lifting device 41 lifts or pulls down the front end or the rear end of the lifting connecting rod 42, so that the lifting connecting rod 42 swings back and forth around the hinged position of the lifting connecting rod and the mounting frame 11; the arrangement mode has the advantages of simple structure, low cost, convenience in installation and adjustment, and stronger lifting capacity of the electric push rod and the electric cylinder, so that wheels with larger diameters can be stably lifted, and the switching speed of the wheels is improved.
The first connecting frame 22 comprises a first main body 23 and a first fastener 24, and the first fastener 24 is arranged on the upper part of the first main body 23; the second connecting frame 32 comprises a second main body 33 and a second fastener 34, and the second fastener 34 is arranged at the lower part of the second main body 33; a first connecting piece 43 and a second connecting piece 44 are arranged on the lifting connecting rod 42 and positioned at the front side and the rear side of the middle part of the lifting connecting rod; the first connecting frame 22 is disposed on the first connecting member 43, and the second connecting frame 32 is disposed on the second connecting member 44.
In addition, the first connecting frame 22 and the second connecting frame 32 are connected with the lifting connecting rod 42 through the first fastening piece 24, the second connecting frame 32 is connected with the lifting connecting rod 42 through the second fastening piece 34, and a manufacturer can adjust the structure of the first fastening piece 24/the second fastening piece 34 to enable the first connecting frame 22/the second connecting frame 32 to be connected with the lifting connecting rod 42 in multiple modes and reduce the setting difficulty, in addition, the first connecting piece 43 and the second connecting piece 44 are arranged for connecting and mounting the first connecting frame 22 and the second connecting frame 32, so that the rod body direct connection of the first connecting frame 22 and the second connecting frame 32 and the lifting connecting rod 42 can be avoided, and the connection positions of the first connecting frame 22 and the second connecting frame 32 and the lifting connecting rod 42 can be avoided in the process of front-back swinging of the lifting connecting rod 42 due to friction, And the parts are damaged due to collision, so that the maintenance cost is reduced, and the service life of the parts is prolonged.
The number of the first connecting pieces 43 and the number of the second connecting pieces 44 are two, and the two first connecting pieces 43 and the two second connecting pieces 44 are oppositely arranged on the left side and the right side of the lifting connecting rod 42; the first fastening member 24 is connected to two of the first connecting members 43, and the second fastening member 34 is connected to two of the second connecting members 44.
The arrangement mode can enable the first connecting frame 22 and the second connecting frame 32 to be connected with two sides of the lifting connecting rod 42, so that the connection strength of the first connecting frame 22, the second connecting frame 32 and the lifting connecting rod 42 is improved, and the connection of the first connecting frame 22, the second connecting frame 32 and the lifting connecting rod 42 is more stable.
The first connecting piece 43 and the second connecting piece 44 are rollers; a first buckling groove 25 is formed in the first buckling piece 24, and the first connecting piece 43 is buckled into the first buckling groove 25; the second fastening member 34 is provided with a second fastening groove 35, and the second connecting member 44 is fastened into the second fastening groove 35.
Because the first connecting piece 43 and the second connecting piece 44 are rollers and can rotate relative to the lifting connecting rod 42, the first connecting piece 43 and the second connecting piece 44 are movably connected with the lifting connecting rod 42, so that a transverse movement component generated when the lifting connecting rod 42 swings is offset, the first connecting piece 43 and the second connecting piece 44 are always stably connected with the first connecting frame 22 and the second connecting frame 32 under the condition that the lifting connecting rod 42 inclines at any angle, the first connecting frame 22/the second connecting frame 32 is prevented from loosening from the lifting connecting rod 42, and the first connecting frame 22/the second connecting frame 32 only swings up and down relative to the lifting connecting rod 42.
The connection point of the first connection member 43 and the lifting link 42, the connection point of the second connection member 44 and the lifting link 42, and the hinge point of the lifting link 42 and the mounting bracket 11 are located on the same straight line.
The distances from the first connecting piece 43 and the second connecting piece 44 to the hinge point of the lifting connecting rod 41 and the mounting frame 11 are limited by enabling the first connecting piece 43 and the second connecting piece 44 and the hinge point of the lifting connecting rod 41 and the mounting frame 11 to be located on the same axis, so that the moments of the first connecting frame 22 and the second connecting frame 32 are adjusted, the power required by the lifting device 41 to drive the lifting connecting rod 41 to swing back and forth is reduced, and the energy consumption is reduced.
The first wheel assembly 2 is provided with a first wheel 21, and the second wheel assembly 3 is provided with a second wheel 31; the diameter of the first wheel body 21 is smaller than that of the second wheel body 31; the first connecting frame 22 is arranged at the lower side of the lifting link 42, and the first wheel assembly 2 is arranged at the lower side of the lifting link 42 through the first connecting frame 22; the second link 32 is disposed at an upper side of the lifting link 42, and the second wheel assembly 3 is disposed at an outer side of the lifting link 42 through the second link 32.
Because the diameter of the first wheel body 21 is smaller than the diameter of the second wheel body 31, the volume of the first wheel body 21 is smaller than that of the second wheel body 31, the first connecting frame 22 is arranged at the lower side of the lifting connecting rod 42, and the second connecting frame 32 is arranged at the outer side of the lifting connecting rod 42, so that the first connecting frame 22 and the second connecting frame 32 are arranged in a staggered manner, the internal space of the wheel assembly switching mechanism 1 can be fully utilized, the space occupied by the wheel assembly switching mechanism 1 is effectively reduced, meanwhile, the second connecting frame 32 is arranged at the upper side of the lifting connecting rod 42, the second connecting frame 32 can be prevented from interfering with the lifting connecting rod 42 when ascending or descending, and the normal use of the wheel assembly switching mechanism 1 is ensured.
Specifically, since the first wheel 21 is disposed at the lower side of the lifting link 32, in order to facilitate the installation of the first guide mechanism 6, the lower portion of the mounting frame 11 is provided with the connecting frame 13 corresponding to the first wheel assembly 2; in this embodiment, in order to improve the connection strength between the first wheel assembly 2 and the mounting frame 11, two connecting frames 13 are provided, and the two connecting frames 13 are located at the front side and the rear side of the mounting frame 11, so as to connect the front side and the rear side of the first wheel 21.
Specifically, two first wheel assemblies 2 are arranged on two sides of the middle of the mounting frame 11, and the two first wheel assemblies 2 are fixedly arranged through a first connecting frame 22; the number of the second wheel assemblies 3 is two, the two second wheel assemblies 3 are respectively arranged at the outer sides of the two first wheel assemblies 2, and the two second wheel assemblies 3 are connected through the second connecting frame 32. The first wheel assembly 2 and the second wheel assembly 3 are arranged in pairs, so that contact points which are contacted with the ground are respectively arranged on two sides of the middle part of the wheel assembly switching mechanism 1, on one hand, the stability of the wheel assembly switching mechanism 1 during operation can be improved, and the phenomenon that the AGV equipment deviates from a preset route due to the fact that the wheel assembly switching mechanism 1 deviates to the left side or the right side of the mounting rack 11 when the AGV equipment does linear motion is avoided; on the other hand, when AGV equipment was the curvilinear motion, wheel subassembly switching mechanism 1's the axis of following vertical direction axial pivoted was located two first wheel body 21 central points that touch down, when AGV equipment turned to, two first wheel body 21 carried out clockwise or anticlockwise rotation around the axis respectively, made first wheel body 21 and the friction type on ground change into sliding friction from static friction to the gyration resistance that receives when the wheel subassembly switching mechanism 1 that significantly reduces rotated, speed when improving AGV equipment omni-directional movement.
A first guide mechanism 6 is arranged between the mounting frame 11 and the first wheel assembly 2, and a second guide mechanism 7 is arranged between the mounting frame 11 and the second wheel assembly 3; the first guide mechanism 6 includes a first guide piece 61 and a first slide piece 62; a first guide 61 is vertically arranged on the mounting frame 11, and a first slide 62 is arranged on the first wheel assembly 2 corresponding to the first guide 61, or a first slide 62 is arranged on the mounting frame 11, and a first guide 61 is vertically arranged on the first wheel assembly 2 corresponding to the first slide 62, and the first slide 62 is slidably connected with the first guide 61; the second guiding mechanism 7 includes a second guiding element 71 and a second sliding element 72, the second guiding element 71 is vertically disposed on the mounting bracket 11, the second sliding element 72 is disposed on the second wheel assembly 3 corresponding to the second guiding element 71, or the second sliding element 72 is disposed on the mounting bracket 11, the second guiding element 71 is vertically disposed on the second wheel assembly 3 corresponding to the second sliding element 72, and the second sliding element 72 is slidably connected with the second guiding element 71.
In the above setting mode, through mounting bracket 11 with set up guiding mechanism between first wheel subassembly 2, the second wheel subassembly 3, thereby it is right the range of motion of first wheel subassembly 2, the second wheel subassembly 3 is restricted, makes first wheel subassembly 2, the second wheel subassembly 3 is relative vertical up-and-down motion can only be made to mounting bracket 11, ensures that wheel subassembly switching mechanism 1 can the steady drive first wheel subassembly 2, the second wheel subassembly 3 is to the up-and-down motion of appointed direction, improves the reliability of wheel subassembly switching mechanism 1, and in addition, this kind of setting mode can avoid because first wheel subassembly 2, the non-directional motion of second wheel subassembly 3 to a plurality of directions, leads to the unable normal drive AGV of actuating mechanism to remove.
Specifically, a first floating support mechanism 8 is arranged on the first connecting frame 22, and a second floating support mechanism 8 is arranged on the second connecting frame 32.
The first floating support mechanism 8 includes a first elastic assembly and a first mounting seat 86, the first wheel 21 is disposed on the first mounting seat 86, the first mounting seat 86 is connected to the wheel assembly switching mechanism 1 through the first elastic assembly, and the first elastic assembly is configured to apply a downward force to the first wheel 21; the second floating support mechanism 9 includes a second elastic assembly and a second mounting seat 96, the second wheel 31 is disposed on the second mounting seat 96, the second mounting seat 96 is connected to the wheel assembly switching mechanism 1 through the second elastic assembly, and the second elastic assembly is configured to apply a downward force to the second wheel 31.
Specifically, the first elastic assembly comprises a first mounting plate 81, a first elastic member 83 and a first guide post 84, the first mounting plate 81 is arranged above the first mounting seat 86, two sides of the first mounting plate 81 extend downwards to form a first guard plate 82, and the first guard plate 82 surrounds the outer side of the first mounting seat 86; by arranging the first protection plates 82, on one hand, the moving range of the first installation seats 86 can be limited, and the first installation seats 86 can be ensured to move between the two first protection plates 82, and on the other hand, the first protection plates can play a role in blocking, so that external pollutants are prevented from entering the first elastic assembly and affecting the normal use of the first elastic assembly; a first mounting portion 87 is arranged at the upper part of the first mounting seat 86, a first mounting protrusion 88 is arranged at the upper side of the first mounting portion 87 or the lower side of the first mounting plate 81, and the first elastic member 83 is sleeved on the first mounting protrusion 88, so that the first elastic member 83 is prevented from loosening, and the service life of the first elastic assembly is prolonged; the first mounting part 87 is provided with a first guide sleeve 89, the first guide post 84 is arranged at the lower part of the first mounting plate 81 and inserted into the first guide sleeve 89, and the arrangement mode can ensure that the first elastic component and the first mounting seat 86 move up and down along the same direction, so that the damage caused by mutual collision of parts due to displacement of the parts is avoided; the first guide post 84 is provided with a first locking member 85 at the lower end thereof, so as to prevent the first guide post 84 from falling out of the first guide sleeve 89.
Specifically, the second elastic assembly comprises a second mounting plate 91, a second elastic member 93 and a second guide post 94, the second mounting plate 91 is arranged above the second mounting seat 96, two sides of the second mounting plate 91 extend downwards to form a second guard plate 92, and the second guard plate 92 surrounds the outside of the second mounting seat 96; by arranging the second guard plates 92, on one hand, the moving range of the second mounting seats 96 can be limited, and the second mounting seats 96 can be ensured to move between the two second guard plates 92, and on the other hand, the blocking effect can be achieved, so that external pollutants are prevented from entering the second elastic assembly and affecting the normal use of the second elastic assembly; a second mounting portion 960 is arranged on the upper portion of the second mounting seat 96, a second mounting protrusion 97 is arranged on the upper side of the second mounting portion 960 or the lower side of the second mounting plate 91, and the second elastic member 93 is sleeved on the second mounting protrusion 97, so that the second elastic member 93 is prevented from loosening, and the service life of the second elastic assembly is prolonged; the second mounting portion 960 is provided with a second guide sleeve 98, the second guide post 94 is arranged at the lower part of the second mounting plate 91 and inserted into the second guide sleeve 98, and the arrangement mode can ensure that the second elastic component and the second mounting seat 96 move up and down along the same direction, so that the parts are prevented from being damaged due to mutual collision caused by displacement of the parts; the lower end of the second guide post 94 is provided with a second locking member 95, so as to prevent the second guide post 94 from falling out of the second guide sleeve 98.
The arrangement mode of arranging the floating support mechanism between the wheel assembly switching mechanism 1 and the first wheel body 21 and the second wheel body 31 has the following advantages:
(1) because the first wheel body 21 and the second wheel body 31 are connected with the corresponding connecting frames through the first elastic assembly and the second elastic assembly respectively, the first wheel body 21 and the second wheel body 31 have certain pre-pressure, so that the first wheel body 21 arranged on the first mounting seat 86 and the second wheel body 31 arranged on the second mounting seat 96 are always close to the ground, the risk of slippage of the first wheel body 21 and the second wheel body 31 caused by insufficient downward pressure is reduced, the first wheel body 21 and the second wheel body 31 can still perform linear and complex curvilinear motion on the ground with fluctuating height, and the reliability of the driving mechanism 1 is effectively improved;
(2) first elastic component, second elastic component can have certain elasticity to can reduce the instantaneous impact force of material to AGV equipment production when loading the material at AGV equipment, play the cushioning effect to first wheel body 21, second wheel body 31.
Example two
The difference between this embodiment and the first embodiment is: the first connecting frame, the second connecting frame and the lifting connecting rod are connected in a connecting mode.
The first buckling piece is hinged with the lifting connecting rod, and can rotate around the hinged position of the first buckling piece and the lifting connecting rod; the second fastening piece is hinged with the lifting connecting rod, and can rotate around the hinged position of the second fastening piece and the lifting connecting rod; the arrangement mode is low in cost, assembly difficulty is effectively reduced, assembly time is shortened, and production efficiency is improved.
Although the drawings of the present embodiment do not show the schematic diagrams of the above embodiments, the present embodiment falls within the scope of the present invention.
EXAMPLE III
The difference between this embodiment and the first embodiment is: the lifting device drives the lifting connecting rod to swing back and forth.
The lifting device is a forward and reverse rotating motor and is arranged at the hinged position of the lifting connecting rod and the mounting frame; when the lifting device operates, the lifting connecting rod swings back and forth around the hinged position of the lifting connecting rod and the mounting frame. The arrangement mode enables the internal structure of the wheel assembly switching mechanism to be more compact, so that the space occupied by the wheel assembly switching mechanism is reduced, a manufacturer can install the wheel assembly switching mechanism on AGV equipment conveniently, in addition, the forward and reverse rotation of the output end of the forward and reverse rotating motor is controlled to drive the lifting connecting rod to swing back and forth, the operation is simple, and the control difficulty is effectively reduced.
Although the drawings of the present embodiment do not show the schematic diagrams of the above embodiments, the present embodiment falls within the scope of the present invention.
Compared with the prior art, the wheel assembly switching mechanism 1 of the present invention uses the lifting structure 4 composed of the lifting device 41 and the lifting connecting rod 42 to lift the first connecting frame 22 and the second connecting frame 32 in turn, so that the first connecting frame 22 and the second connecting frame 32 are landed in turn, and has the technical effects of simple structure and fast response speed; through respectively at first link 22, set up the wheel on the second link 32, can realize two wheel actions of simultaneous operation, realize the switching of wheel, and when enabling one of them wheel to be in the decline state, another wheel is in the state of rising, ensures the synchronism of two wheel motions, avoids appearing because two wheels land simultaneously, causes the speed of wheel subassembly switching mechanism 1 to a plurality of contact points on ground to be different and the unable normal condition that removes of AGV equipment appears.
Example four
Referring to fig. 15 to 21, another object of the present invention is to provide a straddle-type variable speed drive mechanism 5 to which the wheel assembly switching mechanism 1 of the first to third embodiments is applied, which includes a drive transmission mechanism and the wheel assembly switching mechanism 1; the drive transmission mechanism is arranged between the first wheel assembly 2 and the second wheel assembly 3 and is used for driving the first wheel assembly and the second wheel assembly to operate.
In this embodiment, the driving transmission mechanism includes a driving device 51, a driving friction member 53, a first driving friction member 52, a second friction wheel 541 and a third friction wheel 542
The driving device 51 is disposed on the first wheel assembly 2, the driving friction member 53 is disposed coaxially with the first wheel 21, and both the driving friction member 53 and the first wheel 21 are connected to an output end of the driving device 51.
Specifically, the driving friction member 53 is cylindrical, the driving friction member 53 is disposed on the outer side of the first wheel body 21, and the center of the driving friction member 53 is on the same axis as the center of the first wheel body 21.
The first transmission friction piece 24 is coaxially arranged with the second wheel body 31; the second transmission friction piece 541 and the third transmission friction piece 542 are respectively arranged at two sides below the first transmission friction piece 24 in a tangent way; when the second wheel assembly is in contact with the ground, the driving friction member 53 is simultaneously in contact with the second and third transmission friction members 541 and 542.
The driving transmission mechanism further comprises a fixing frame 55, the fixing frame 55 is u-shaped, the fixing frame 55 comprises a fixing portion 56 and two connecting portions 57, the two connecting portions 57 are respectively disposed on two sides of the fixing portion 56, the two connecting portions 57 are respectively connected with the second wheel 31, the second driving friction member 541 and the third driving friction member 542 are rotatably disposed on the fixing portion 56 and are in contact with the first driving friction member 52, and the driving friction member 53 is in transmission connection with the first driving friction member 52 through the second driving friction member 541 and the third driving friction member 542.
EXAMPLE five
Another object of the present invention is to provide a driving mechanism capable of shifting gears in a cross-gear manner, which employs the wheel assembly switching mechanism of the first to third embodiments, wherein the driving mechanism includes a driving transmission mechanism and a wheel assembly switching mechanism; the driving transmission mechanism is arranged between the first wheel assembly and the second wheel assembly and is used for driving the first wheel assembly and the second wheel assembly to operate.
Specifically, drive transmission mechanism includes a plurality of driving motor, and a plurality of driving motor connects first wheel body and second wheel body respectively, first wheel body, second wheel body are driven by mutually independent driving motor to simplify the inner structure of the actuating mechanism that can stride a shelves variable speed, reduce the setting of spare part.
Although the drawings of the present embodiment do not show the schematic diagrams of the above embodiments, the present embodiment falls within the scope of the present invention.
Compared with the prior art, the utility model discloses a wheel subassembly switching mechanism 1, be provided with two sets of wheels and drive transmission mechanism, make AGV equipment starting, turn to, when stopping, can use the less wheel subassembly of diameter to remove, thereby reduce the resistance that AGV equipment received in above-mentioned motion process, and improve AGV equipment's the start-up speed and the precision of stop position, effectively reduce AGV equipment actual position and preset position's skew error, in addition, when AGV equipment marchs at long distance straight line section, the great wheel subassembly of changeable diameter moves, thereby can improve AGV equipment's translation rate, and then AGV's conveying efficiency has been improved.
Variations and modifications to the above-described embodiments may occur to those skilled in the art, in light of the above teachings and teachings. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should fall within the protection scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (10)
1. Wheel subassembly switching mechanism, its characterized in that: the lifting device comprises a mounting frame, a first connecting frame, a second connecting frame and a lifting structure;
the lifting structure comprises a lifting device and a lifting connecting rod, the middle part of the lifting connecting rod is hinged with the mounting frame, and the first connecting frame and the second connecting frame are respectively arranged on the front side and the rear side of the middle part of the lifting connecting rod;
the lifting device is used for driving the lifting connecting rod to swing back and forth around the hinged position of the lifting connecting rod and the mounting frame, so that the first connecting frame and the second connecting frame descend in turn.
2. The wheel assembly switching mechanism of claim 1, wherein: the lifting device is an electric push rod or an electric cylinder, the lifting device is arranged on the mounting frame, and the telescopic end of the lifting device is hinged with the front end or the rear end of the lifting connecting rod.
3. The wheel assembly switching mechanism of claim 1, wherein: the lifting device is a forward and reverse rotating motor and is arranged at the hinged position of the lifting connecting rod and the mounting frame;
when the lifting device operates, the lifting connecting rod swings back and forth around the hinged position of the lifting connecting rod and the mounting frame.
4. The wheel assembly switching mechanism of claim 1, wherein: the first connecting frame comprises a first main body and a first buckling piece, and the first buckling piece is arranged on the upper part of the first main body;
the second connecting frame comprises a second main body and a second fastening piece, and the second fastening piece is arranged on the second main body;
a first connecting piece and a second connecting piece are arranged on the lifting connecting rod and positioned at the front side and the rear side of the middle part of the lifting connecting rod;
the first connecting frame is arranged on the first connecting piece, and the second connecting frame is arranged on the second connecting piece.
5. The wheel assembly switching mechanism of claim 4, wherein: the first connecting pieces and the second connecting pieces are respectively provided with two, and the two first connecting pieces and the two second connecting pieces are oppositely arranged on the left side and the right side of the lifting connecting rod;
the first fastening pieces are connected with the two first connecting pieces, and the second fastening pieces are connected with the two second connecting pieces.
6. The wheel assembly switching mechanism of claim 4, wherein: the first buckling piece is hinged with the lifting connecting rod, and can rotate around the hinged position of the first buckling piece and the lifting connecting rod; the second fastener is hinged with the lifting connecting rod, and the second fastener can rotate around the hinged position of the second fastener and the lifting connecting rod.
7. The wheel assembly switching mechanism of claim 4, wherein: the first connecting piece and the second connecting piece are rollers;
the first buckling groove is formed in the first buckling piece, and the first buckling piece is buckled into the first buckling groove; and a second buckling groove is formed in the second buckling piece, and the second connecting piece is buckled into the second buckling groove.
8. The wheel assembly switching mechanism of claim 4, wherein: the connecting point of the first connecting piece and the lifting connecting rod, the connecting point of the second connecting piece and the lifting connecting rod and the hinge point of the lifting connecting rod and the mounting rack are positioned on the same straight line.
9. The wheel assembly switching mechanism of claim 1, wherein: the vehicle further comprises a first wheel assembly and a second wheel assembly;
the first connecting frame is arranged at the lower side of the lifting connecting rod, and the first wheel assembly is arranged at the lower side of the lifting connecting rod through the first connecting frame;
the second connecting frame is arranged on the upper side of the lifting connecting rod, and the second wheel assembly is arranged on the outer side of the lifting connecting rod through the second connecting frame.
10. The wheel assembly switching mechanism of claim 9, wherein: a first guide mechanism is arranged between the mounting frame and the first wheel assembly, and a second guide mechanism is arranged between the mounting frame and the second wheel assembly;
the first guide mechanism comprises a first guide piece and a first sliding piece; the first guide piece is vertically arranged on the mounting frame, and the first sliding piece is arranged on the first wheel assembly corresponding to the first guide piece, or the first sliding piece is arranged on the mounting frame, the first guide piece is vertically arranged on the first wheel assembly corresponding to the first sliding piece, and the first sliding piece is connected with the first guide piece in a sliding manner;
the second guide mechanism comprises a second guide piece and a second sliding piece, the second guide piece is vertically arranged on the mounting frame, the second sliding piece is arranged on the second wheel assembly corresponding to the second guide piece, or the second sliding piece is arranged on the mounting frame, the second guide piece is vertically arranged on the second wheel assembly corresponding to the second sliding piece, and the second sliding piece is connected with the second guide piece in a sliding mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921415477.0U CN210734344U (en) | 2019-08-28 | 2019-08-28 | Wheel assembly switching mechanism |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921415477.0U CN210734344U (en) | 2019-08-28 | 2019-08-28 | Wheel assembly switching mechanism |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112208672A (en) * | 2020-09-23 | 2021-01-12 | 东风专用设备科技有限公司 | Flat AGV drive unit hoist system |
| CN112363496A (en) * | 2020-09-29 | 2021-02-12 | 广东嘉腾机器人自动化有限公司 | AGV and AGV driving automatic switching control method |
-
2019
- 2019-08-28 CN CN201921415477.0U patent/CN210734344U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112208672A (en) * | 2020-09-23 | 2021-01-12 | 东风专用设备科技有限公司 | Flat AGV drive unit hoist system |
| CN112363496A (en) * | 2020-09-29 | 2021-02-12 | 广东嘉腾机器人自动化有限公司 | AGV and AGV driving automatic switching control method |
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