CN219857426U - AGV dolly levelling mechanism - Google Patents

Abstract

The utility model provides an AGV trolley leveling mechanism, and belongs to the technical field of AGV trolleys. An AGV trolley leveling mechanism comprises a floating frame, wheels and a bearing assembly; according to the utility model, the floating frame driving the wheels is arranged on the frame through the two groups of bearing assemblies which are arranged independently, so that the mounting requirement of the floating frame on the frame is met, the forming environment of uneven ground is adapted, the bearing main shaft is required to be pulled out of and inserted into the inner ring of the rotating bearing in the bearing seat during disassembly and assembly, the steps are simple, the operation is convenient, meanwhile, the interval between the bearing assemblies which are arranged independently can be arranged, compared with a whole shaft, the material consumption is more saved, the independence is higher, the corresponding bearing assemblies can be independently replaced after the bearing assemblies are damaged, the whole replacement is not needed, the manufacturing and using cost is lower, the occupied space of the bearing assemblies which are arranged independently can be reduced through the arrangement of gaps, meanwhile, the structure such as an electric wire is also facilitated to pass through the floating frame, and the structural adaptability is better.

Description

AGV dolly levelling mechanism

Technical Field

The utility model relates to the technical field of AGV trolleys, in particular to an AGV trolley leveling mechanism.

Background

AGV dolly is as widely used carrying device in unmanned transportation field, can be according to discernment obstacle avoidance system along certain orbit with the article transportation that its carried to appointed region. The automatic control device comprises a frame, a driving wheel, a power supply, an identification obstacle avoidance system and a controller, wherein the driving wheel is arranged at the bottom of the frame, the power supply, the identification obstacle avoidance system and the controller are arranged in the frame, power is supplied to the driving wheel, the identification obstacle avoidance system and the controller through the power supply, and the movement of the driving wheel is controlled through the controller, so that the running requirement of an AGV trolley is met.

However, in the actual running environment of the AGV trolley, the ground may have an uneven surface, for example, when the driving wheel is directly fixed on the frame, one of the driving wheels may cause a problem that the driving wheel is suspended or the frame is inclined when passing through a pit or a convex hull on the ground, which affects the running of the vehicle. Currently, the structure of an AGV trolley on the market is disclosed in patent CN114715282a, an AGV chassis capable of adapting to the ground and actively leveling is provided on a frame welding assembly of the AGV chassis, and the frame welding assembly of the AGV chassis is provided with a bridge-type front wheel assembly, and the bridge-type front wheel assembly comprises a first steering wheel, a first universal wheel, two bearing seats, a bridge frame, and a bridge hinge shaft. The chassis of the AGV trolley can smoothly pass through an uneven ground area although meeting leveling requirements, but the bridge hinge shaft is fixedly connected with eight fixing bolts through the bearing seat, when the bridge is disassembled, the bearing seat can be taken down after each fixing bolt is disassembled, and meanwhile, the bearing is taken down from the bearing seat or the bridge hinge shaft, so that the operation is complex. In view of the foregoing, it is desirable to provide an AGV leveling mechanism that is quickly removable and inexpensive to manufacture and use and that occupies a small space.

Disclosure of Invention

The utility model provides a AGV dolly leveling mechanism, with the bottom of one end at the frame sets up the floating frame of following the vertical arrangement of vehicle advancing direction, and the wheel is installed at the both ends of floating frame, the both sides of floating frame are demountable installation respectively has a bearing main shaft, and the tip of each bearing main shaft is all inserted and is located on the bearing frame of installing in the frame bottom, make the floating frame deflect on the frame under the effect of bearing main shaft and bearing frame, thereby adapt to the operation scene of ground unevenness, in addition, the operator only need loosen the bearing main shaft after can taking off the floating frame from the frame, the dismouting is more convenient, and two independent bearing main shafts only need change corresponding bearing main shaft after damaging can, need not whole change, manufacturing and use cost are lower, and also make and leave sufficient interval between two bearing main shafts, the space occupation is less, do benefit to the passing through of structures such as electric wire, the structure flexibility is higher.

The specific technical scheme is as follows:

an AGV cart leveling mechanism mounted to the bottom of one end of a frame having such features, comprising:

the floating frame is arranged at the bottom of the frame, and is vertically arranged along the travelling direction of the vehicle, and two ends of the floating frame extend to two sides of the frame respectively;

wheels mounted at bottoms of both ends of the floating frame;

the bearing components are arranged at two sides of the middle of the floating frame, each bearing component comprises a bearing seat, a rotating bearing and a bearing main shaft, the bearing seats are arranged on the frame, the rotating bearings are arranged in the bearing seats, bosses are arranged at two sides of the floating frame and at positions corresponding to the two bearing seats respectively, a jack is formed in the boss along the travelling direction of the vehicle, and one end of each bearing main shaft penetrates through the jack and then extends into an inner ring of the rotating bearing in the bearing seat.

The AGV trolley leveling mechanism comprises a boss, wherein the boss is arranged on the upper surface of the boss, and the boss is fixedly connected with the floating frame through a threaded fastener.

The AGV trolley leveling mechanism comprises a boss, wherein a plurality of first locking holes are formed in the boss and located beside a jack, a protruding blocking edge is arranged on the end, which is away from one end penetrating through the jack, of a bearing spindle, a second locking hole corresponding to the first locking hole is formed in the blocking edge, and when the bearing spindle is mounted on the boss, the first locking hole and the second locking hole are connected through a screw.

The AGV trolley leveling mechanism comprises a bearing seat, wherein the bearing seat is of a block structure, extension parts are respectively arranged on two sides of the top of the bearing seat, the extension parts are fixed to the bottom of a frame through threaded fasteners, simultaneously, an embedded groove is formed in one side of the lower portion of the bearing seat, and a rotating bearing is arranged in the embedded groove.

The AGV trolley leveling mechanism comprises a bearing main shaft, wherein the diameter of the part, extending into the bearing seat, of the inner ring of the rotating bearing is smaller than the diameter of the part, located in the insertion hole, of the bearing main shaft, a limiting step is formed, and after the end part of the bearing main shaft extends into the rotating bearing, the inner ring of the rotating bearing abuts against the limiting step.

The AGV trolley leveling mechanism comprises a floating frame, wherein the two ends of the floating frame are respectively provided with mounting plates, and wheels arranged at the two ends of the floating frame are respectively arranged on the two mounting plates.

Foretell AGV dolly levelling mechanism, wherein, just be located the mounting panel on the floating frame and deviate from the one side of wheel and be provided with the stiffener, the stiffener is square tube structure, and one side edge of mounting panel is supported on the stiffener.

The AGV trolley leveling mechanism is characterized in that a sealing ring is further arranged at the notch of the caulking groove, the sealing ring is sleeved on the position, inserted into the inner ring of the rotating bearing, of the bearing main shaft, and the outer side of the sealing ring abuts against the groove wall of the caulking groove.

The technical scheme has the positive effects that:

the AGV trolley leveling mechanism comprises bearing blocks, rotating bearings and bearing spindles, wherein the bearing blocks comprise bearing blocks, the rotating bearings and the bearing spindles are arranged between the frame and the two sides of the floating frame, the bearing blocks of each bearing block are fixed on the frame, the rotating bearings are installed in the bearing blocks, the bearing spindles are detachably installed on the floating frame, meanwhile, one ends of the bearing spindles extend to the inner rings of the rotating bearings in the bearing blocks, the floating frame can swing on the frame in a deflection mode, so that the AGV trolley leveling mechanism is suitable for a traveling scene with uneven ground, in addition, when the floating frame is dismounted on the frame, the bearing spindles are only required to be pulled out after being released from the floating frame, the steps are simple, the operation is more convenient, in addition, the two bearing blocks which are independently arranged are respectively used on the two sides of the middle of the floating frame, compared with the structure of a whole transmission shaft, the material consumption is more saved, the independence is higher, the corresponding bearing spindles can be replaced after the whole shaft is not required to be replaced, the whole shaft is manufactured and the use cost is lower, the two bearing blocks which are independently arranged are convenient for forming a space between the two bearing blocks, the floating frame is less occupied, and the wire and other structures are more flexible.

Drawings

FIG. 1 is a block diagram of an embodiment of an AGV cart leveling mechanism of the present utility model;

FIG. 2 is a schematic view of the installation of a floating frame and bearing assembly according to a preferred embodiment of the present utility model;

FIG. 3 is a block diagram of a floating frame according to a preferred embodiment of the present utility model;

FIG. 4 is a cross-sectional view of a bearing assembly according to a preferred embodiment of the present utility model;

fig. 5 is a block diagram of a bearing spindle according to a preferred embodiment of the present utility model.

In the accompanying drawings: 1. a frame; 2. a floating frame; 21. a boss; 22. a mounting plate; 23. a reinforcing rod; 211. a jack; 212. a fixed edge; 213. a first locking hole; 3. a wheel; 4. a bearing assembly; 41. a bearing seat; 42. a rotating bearing; 43. a bearing spindle; 44. a seal ring; 411. an extension; 412. a caulking groove; 431. protruding blocking edges; 432. a second locking hole; 433. and limiting the step.

Description of the embodiments

In order to make the technical means, the creation features, the achievement of the purposes and the effects of the present utility model easy to understand, the following embodiments specifically describe the technical solution provided by the present utility model with reference to fig. 1 to 5, but the following disclosure is not limited to the present utility model.

FIG. 1 is a block diagram of an embodiment of an AGV cart leveling mechanism of the present utility model; FIG. 2 is a schematic view of the installation of a floating frame and bearing assembly according to a preferred embodiment of the present utility model. As shown in fig. 1 and 2, the leveling mechanism for the AGV trolley provided in this embodiment is disposed at the bottom of one end of the frame, so that the balance of the frame can be maintained when the AGV trolley passes over uneven road surfaces, wheels can be ensured to contact the ground, and normal transportation is maintained. At this time, the AGV dolly leveling mechanism that this embodiment provided includes: the wheel 3 is mounted on the floating frame 2 through the bearing assembly 4, so that the wheel 3 is mounted on the frame 1.

FIG. 3 shows the structure of a floating frame according to a preferred embodiment of the present utility model. As shown in fig. 1, 2 and 3, the floating frame 2 is disposed at the bottom of the frame 1, that is, the frame 1 is supported by the floating frame 2, so as to support the frame 1. Meanwhile, the floating frame 2 is arranged vertically along the running direction of the vehicle, preferably, the floating frame 2 is of a rectangular structure, and the length direction of the floating frame 2 is vertical to the running direction of the vehicle, so that two ends of the floating frame 2 can be respectively extended to two sides of the running direction of the vehicle frame 1, and conditions are provided for subsequently installing the wheels 3 on the two sides of the vehicle frame 1 through the floating frame 2.

Specifically, the wheels 3 are arranged at the bottoms of the two ends of the floating frame 2, the floating frame 2 is supported by the wheels 3, so that when the wheels 3 pass through uneven road surfaces to cause height difference between the two wheels 3, the wheels can be adapted through deflection of the floating frame 2, the balance of the frame 1 can be maintained under the condition that the wheels 3 contact the ground, and the structural design is more reasonable.

FIG. 4 is a cross-sectional view of a bearing assembly according to a preferred embodiment of the present utility model. As shown in fig. 1, 2 and 4, two bearing assemblies 4 are provided, and at this time, the two bearing assemblies 4 are respectively provided at two sides of the middle part of the floating frame 2, so as to provide conditions for independently mounting the two sides of the floating frame 2 on the frame 1. In addition, each bearing assembly 4 further includes a bearing seat 41, a rotating bearing 42 and a bearing spindle 43, and the bearing seat 41 is fixedly mounted on the frame 1, so as to ensure the bearing capacity of the bearing seat 41. And, the rolling bearing 42 is mounted in the bearing housing 41, i.e., a mounting carrier is provided for the rolling bearing 42 through the bearing housing 41. And, the two sides of the floating frame 2 and the positions corresponding to the two bearing seats 41 are respectively provided with a boss 21, thereby providing conditions for connecting the floating frame 2 and the frame 1. Meanwhile, an insertion hole 211 is formed in the boss 21 and along the travelling direction of the vehicle, one end of the bearing main shaft 43 penetrates through the insertion hole 211 and then extends into the inner ring of the rotating bearing 42 in the bearing seat 41, namely, the rotating bearing 42 in the bearing seat 41 is connected with the boss 21 through the bearing main shaft 43, and the boss 21 is mounted on the floating frame 2 due to the fact that the bearing seat 41 is fixedly mounted on the frame 1, so that the floating connection and the rotating connection of the frame 1 are achieved, and the use requirement that the floating frame 2 can be turned over on the frame 1 when the follow-up requirement is met. It is worth noting that the independence of the bearing assemblies 4 arranged independently is higher, only the corresponding bearing main shaft 43 can be replaced after the bearing assemblies are damaged, the whole shaft does not need to be replaced integrally, the use cost is lower, compared with the traditional method of using the whole shaft, the material use is more saved, the manufacturing cost is lower, in addition, the bearing assemblies 4 arranged independently can be separated, the passing of structures such as wires is facilitated, and the structure flexibility is higher.

More specifically, the both sides of boss 21 all are provided with outstanding fixed edge 212, and fixed edge 212 and boss 21 structure as an organic whole, have guaranteed the structural strength of fixed edge 212 and boss 21, simultaneously, with fixed edge 212 and floating frame 2 between through screw fastener fixed connection, realized the stable installation of boss 21 on floating frame 2 through fixed edge 212 and screw fastener promptly, in addition, also be convenient for the change after boss 21 damages, structural design is more reasonable.

Fig. 5 is a block diagram of a bearing spindle according to a preferred embodiment of the present utility model. As shown in fig. 1, 2 and 5, a plurality of first locking holes 213 are disposed on the boss 21 and beside the insertion hole 211, and preferably, the plurality of first locking holes 213 are distributed in an annular array with the hole axis of the insertion hole 211 as the axis, so as to ensure the uniform distribution of the locking holes beside the insertion hole 211. Meanwhile, a protruding blocking edge is arranged on the end of the bearing main shaft 43, which is away from one end passing through the insertion hole 211, so that the bearing main shaft 43 forms a T-shaped structure, and the protruding blocking edge can be abutted against one side surface of the boss 21, which is away from the bearing seat 41, after one end of the bearing main shaft 43 passes through the insertion hole 211, so that the movement of the bearing main shaft 43 in the insertion hole 211 is limited. In addition, the second locking hole 432 corresponding to the first locking hole 213 is formed on the blocking edge, and when the bearing spindle 43 is mounted on the boss 21, the first locking hole 213 and the second locking hole 432 are connected by screws, that is, by the cooperation of the screws, the first locking hole 213 and the second locking hole 432, the connection between the blocking edge and the boss 21 is realized, that is, when the bearing spindle 43 needs to be stably mounted, the bearing spindle 43 can be fixed on the boss 21 by the screws, so that the problem that the bearing spindle 43 is separated from the bearing in the bearing seat 41 due to the fact that the bearing spindle 43 is separated from the jack 211 in the use process is prevented, and when the floating frame 2 needs to be dismounted, only the screws are required to be unscrewed, the middle bearing spindle 43 is reversely pulled out from the jack 211, and the steps are simple and the operation is convenient.

More specifically, the bearing seat 41 has a block structure, so that the bearing seat 41 has a certain thickness, provides a structural foundation for the installation of the rotating bearing 42, and ensures the structural strength of the bearing seat, thereby being convenient for supporting the frame 1. At this time, the extension 411 is provided on two sides of the top of the bearing seat 41, and the extension 411 is fixed on the bottom of the frame 1 through the threaded fastener, so that the bearing seat 41 is installed on the frame 1 through the extension 411, meanwhile, the caulking groove 412 is provided on one side of the lower portion of the bearing seat 41, the rotating bearing 42 is installed in the caulking groove 412, that is, an installation space is provided for the rotating bearing 42 through the caulking groove 412, meanwhile, the packaging of the rotating bearing 42 is also realized, the protection of the connection part between the rotating bearing 42 and the bearing main shaft 43 is promoted, and the structural design is more reasonable.

More specifically, the diameter of the portion of the bearing main shaft 43 extending into the inner ring of the rolling bearing 42 in the bearing housing 41 is smaller than the diameter of the portion located in the insertion hole 211, so that a stopper step 433 can be formed on the end of the bearing main shaft 43 extending into the bearing housing 41, and the smaller end is fitted with the inner ring of the rolling bearing 42. At this time, after the end of the bearing spindle 43 extends into the rotating bearing 42, the inner ring of the rotating bearing 42 can be propped against the limiting step 433 formed on the bearing spindle 43, so that the mutual limitation between the rotating bearing 42 and the bearing spindle 43 is realized, and the stability of the relative position is ensured. It should be noted that, in order to facilitate the subsequent quick insertion and removal of the bearing spindle 43 from the inner ring of the rolling bearing 42, the diameter of the end portion of the bearing spindle 43, which is engaged with the rolling bearing 42, may be slightly smaller than the inner diameter of the inner ring of the rolling bearing 42, so as to facilitate the quick completion of the assembly and disassembly.

More specifically, a mounting plate 22 is arranged at two ends of the floating frame 2, at this time, the mounting plate 22 is tiled at the bottom of the floating frame 2, and two wheels 3 are respectively mounted on the two mounting plates 22 at two ends of the floating frame 2, namely, the mounting plates 22 are used as a carrier for mounting the wheels 3 on the floating frame 2, so that a large enough mounting area is provided for mounting the wheels 3, the wheels 3 are conveniently mounted, and in addition, the structural strength of the floating frame 2 is enhanced through the mounting plates 22, and the stability of the floating frame 2 is improved.

More specifically, the reinforcing rod 23 is further arranged on the floating frame 2 and on one side of the mounting plate 22 away from the wheel 3, namely, the other positions of the mounting plate 22, which are suspended on the floating frame 2, except the connection position of the mounting plate 22 with the floating frame 2, are provided with the reinforcing rod 23 to support, the reinforcing rod 23 is set to be of a square tube structure, one side edge of the mounting plate 22 is abutted against the reinforcing rod 23, so that the stability and the reliability of the mounting plate 22 on the floating frame 2 are effectively improved, and the bearing capacity of the mounting plate 22 is improved.

More specifically, the notch of the caulking groove 412 on the bearing seat 41 is further provided with a sealing ring 44, at this time, the sealing ring 44 is sleeved on the part of the bearing spindle 43 inserted into the inner ring of the rotating bearing 42, and after the installation of the bearing spindle 43 is completed, the outer side of the sealing ring 44 abuts against the groove wall of the caulking groove 412, that is, the gap between the caulking groove 412 and the bearing spindle 43 is sealed by the sealing ring 44, so that the problem of excessive abrasion caused by the entry of impurities such as dust into the rotating bearing 42 is effectively prevented, and meanwhile, the movement of the sealing ring 44 on the rotating bearing 42 is also prevented, and the structural design is more reasonable.

The AGV trolley leveling mechanism provided by the embodiment comprises a floating frame 2, wheels 3 and a bearing assembly 4; the floating frame 2 driving the wheels 3 is arranged on the frame 1 through two groups of bearing assemblies 4 which are independently arranged, the bearing seat 41 of each bearing assembly 4 is fixed on the frame 1, the rotary bearing 42 is arranged in the caulking groove 412 of the bearing seat 41, in addition, the rotary main shaft is inserted into the inner ring of the rotary bearing 42 after passing through the insertion hole 211 on the boss 21 on the floating frame 2, the installation requirement of the floating frame 2 on the frame 1 is met, the forming environment of uneven ground is adapted, the bearing main shaft 43 is required to be pulled out and inserted when the floating frame is disassembled, the steps are simple, the operation is convenient, meanwhile, the interval between the bearing assemblies 4 which are independently arranged can be arranged, compared with the whole shaft, the material is saved, the independence is higher, the corresponding bearing assemblies 4 can be independently replaced after the bearing assemblies are damaged, the whole replacement is not needed, the manufacturing and using cost is lower, the space occupied by the space of the bearing assemblies 4 which are independently arranged can be reduced through the arrangement of gaps, meanwhile, the structure such as an electric wire can pass through the floating frame 2, and the structure is better in the structure.

The foregoing is merely illustrative of the preferred embodiments of the present utility model and is not intended to limit the embodiments and scope of the present utility model, and it should be appreciated by those skilled in the art that equivalent substitutions and obvious variations may be made using the description and illustrations of the present utility model, and are intended to be included in the scope of the present utility model.

Claims (8)

1. An AGV dolly leveling mechanism installs in the bottom of the one end of frame, its characterized in that includes:

the floating frame is arranged at the bottom of the frame, and is vertically arranged along the running direction of the vehicle, and two ends of the floating frame extend to two sides of the frame respectively;

wheels mounted to bottoms of both ends of the floating frame;

bearing assembly, bearing assembly is provided with two, two bearing assembly set up respectively in the both sides at the middle part of floating frame, every bearing assembly all includes a bearing frame, a rolling bearing and a bearing main shaft, the bearing frame install in on the frame, rolling bearing install in the bearing frame, and, floating frame's both sides and respectively with two all be provided with the boss on the position that the bearing frame corresponds, a jack has been seted up along the vehicle advancing direction on the boss, the one end of bearing main shaft passes behind the jack extend to in the bearing frame in rolling bearing's the inner circle.

2. The AGV cart leveling mechanism as set forth in claim 1 wherein protruding securing edges are provided on both sides of said boss, said securing edges being fixedly connected to said floating frame by threaded fasteners.

3. The AGV trolley leveling mechanism according to claim 1, wherein a plurality of first locking holes are provided on the boss and beside the insertion hole, a protruding blocking edge is provided on an end of the bearing spindle facing away from one end passing through the insertion hole, a second locking hole corresponding to the first locking hole is provided on the blocking edge, and when the bearing spindle is mounted on the boss, the first locking hole and the second locking hole are connected by a screw.

4. The AGV car leveling mechanism according to claim 1, wherein the bearing housing has a block structure, extension portions are provided on both sides of a top of the bearing housing, respectively, and the extension portions are fixed to a bottom of the frame by threaded fasteners, and simultaneously, an caulking groove is provided on one side of a lower portion of the bearing housing, and the rolling bearing is installed in the caulking groove.

5. The AGV cart leveling mechanism according to claim 1, wherein the diameter of the portion of the bearing spindle that extends into the inner race of the rolling bearing in the bearing housing is smaller than the diameter of the portion that is located in the insertion hole and forms a limit step, and the inner race of the rolling bearing abuts against the limit step after the end of the bearing spindle extends into the rolling bearing.

6. The AGV car leveling mechanism as set forth in claim 1 wherein said floating frame is provided with mounting plates at both ends thereof, said wheels mounted at both ends of said floating frame being mounted on both said mounting plates, respectively.

7. The AGV car leveling mechanism as set forth in claim 6 wherein said floating frame is provided with a reinforcing bar on a side of said mounting plate facing away from said wheels, said reinforcing bar being of square tube construction and a side edge of said mounting plate being disposed against said reinforcing bar.

8. The AGV trolley leveling mechanism according to claim 4, wherein a seal ring is further provided at a notch of the caulking groove, the seal ring is sleeved on a portion of the bearing spindle inserted into the inner ring of the rolling bearing, and an outer side of the seal ring abuts against a groove wall of the caulking groove.