CN219429642U - Conveying device - Google Patents

Abstract

The application discloses handling device belongs to automated guided transportation technical field. The carrying device comprises a vehicle body and a carrying arm, wherein the carrying arm can slide relative to the vehicle body, the carrying arm comprises an arm body and a floating pressure-bearing assembly, the arm body is in sliding connection with the vehicle body, the arm body is rotatably provided with travelling wheels, and the floating pressure-bearing assembly is connected with the arm body; in the case where the floating pressure bearing assembly is pressurized, a part of the floating pressure bearing assembly is deformed, or the floating pressure bearing assembly is moved relative to the arm body in the height direction of the carrier arm so that the lower end surface of the floating pressure bearing assembly can be in contact with the support surface. So, when the handling arm inserts the goods below, goods exert pressure to the pressure-bearing subassembly that floats, the lower terminal surface of pressure-bearing subassembly and walking wheel all contact with the holding surface, and the area of contact between handling device and the holding surface increases, and the pressure that the walking wheel bore can be shared to the pressure-bearing subassembly that floats, avoids the walking wheel to receive the pressure too big and damage.

Description

Conveying device

Technical Field

The application belongs to automated guided transporting technical field, concretely relates to handling device.

Background

In the related art, the handling device includes the automobile body and sets up the handling arm on the automobile body, and the handling arm includes the arm body and sets up the lifting mechanism on the arm body, and the handling arm can stretch out in the automobile body to lift the goods through lifting mechanism, thereby place the goods on the automobile body, transport the destination with the goods by the automobile body. Moreover, the bottom of handling arm is equipped with the walking wheel, walking wheel and ground direct contact to reduce the frictional force between handling arm and the ground, however, when the handling arm inserts the goods below, the handling arm bears the great gravity of goods in the twinkling of an eye, and the handling arm also can apply the great effort of walking wheel in the short time, leads to the walking wheel to receive the too big damage of pressure, influences handling device's handling.

Disclosure of Invention

An object of the embodiment of the application is to provide a handling device, can solve the problem that the handling device walking wheel is too big to lead to the walking wheel to damage among the related art.

The embodiment of the application provides a handling device, which comprises a vehicle body and a handling arm, wherein the handling arm can slide relative to the vehicle body, the handling arm comprises an arm body and a floating pressure-bearing assembly, the arm body is in sliding connection with the vehicle body, the arm body is rotatably provided with travelling wheels, the floating pressure-bearing assembly is connected with the arm body,

with the floating pressure bearing assembly pressurized, a portion of the floating pressure bearing assembly deforms or the floating pressure bearing assembly moves relative to the arm body in the height direction of the carrier arm so that the lower end surface of the floating pressure bearing assembly can contact the support surface.

In this application embodiment, when the handling arm inserts the goods below, the goods is exerted pressure to the pressure-bearing subassembly that floats, make the part of pressure-bearing subassembly that floats take place deformation, perhaps, make the whole of pressure-bearing subassembly that floats remove in the direction of height of handling arm for the arm body, so that the lower terminal surface of pressure-bearing subassembly that floats can be with the holding surface face contact, the lower terminal surface of pressure-bearing subassembly and walking wheel all contact with the holding surface promptly, the area of contact increase between handling device and the holding surface, the pressure that the walking wheel bore can be shared to the pressure that the pressure-bearing subassembly that floats, avoid the walking wheel to receive the too big damage of pressing.

Drawings

Fig. 1 is a schematic structural view of a handling device disclosed in an embodiment of the present application;

FIG. 2 is a side view of a handling device disclosed in an embodiment of the present application;

FIG. 3 is a schematic illustration of a handling device when a floating pressure bearing assembly is supporting cargo as disclosed in an embodiment of the present application;

FIG. 4 is a schematic view of a vehicle body carrying a cargo in accordance with an embodiment of the present disclosure;

FIG. 5 is a schematic view of a structure of a handling arm according to an embodiment of the present disclosure;

FIG. 6 is a schematic view of a portion of a transfer arm according to an embodiment of the present disclosure;

FIG. 7 is a schematic view of a drive mechanism disclosed in an embodiment of the present application;

FIG. 8 is a schematic view of the structure of a floating mount disclosed in an embodiment of the present application;

fig. 9 is a schematic structural view of an arm body disclosed in an embodiment of the present application.

Reference numerals illustrate:

100-car body, 110-accommodating groove,

200-a carrying arm,

210-arm body, 211-driving wheel, 212-driven wheel, 213-opening, 214-mounting plate,

220-elastic member,

230-floating bearing assembly,

231-floating seat, 2311-main body, a-chute, b-mounting hole, 2312-edge portion,

232-lifting the top plate,

233-lifting mechanism, 2331-first rotating arm, 2332-second rotating arm,

234-driving mechanism, 2341-driving source, 2342-screw rod, 2343-screw rod nut, 2344-speed reducer, 2345-bearing fixing seat,

300-cargo.

Detailed Description

Technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application are within the scope of the protection of the present application.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type and not limited to the number of objects, e.g., the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.

The following describes in detail the handling device provided in the embodiments of the present application through specific embodiments and application scenarios thereof with reference to the accompanying drawings.

Referring to fig. 1-9, the handling device disclosed in the embodiments of the present application includes a vehicle body 100 and a handling arm 200, wherein the handling arm 200 is slidable relative to the vehicle body 100, i.e. the handling arm 200 is slidably connected to the vehicle body 100. Alternatively, the vehicle body 100 is provided with the accommodating groove 110, the extending direction of the accommodating groove 110 coincides with the extending direction of the transporting arm 200, and the accommodating groove 110 and the transporting arm 200 may be slidably connected by a guide rail.

The arm 200 includes an arm body 210 and a floating pressure-bearing assembly 230, wherein the arm body 210 is used as a main body structure of the arm 200, the arm body 210 is slidably connected with the vehicle body 100, and the arm body 210 is rotatably provided with travelling wheels, and optionally, the travelling wheels may be a driving wheel 211, a driven wheel 212, or both the driving wheel 211 and the driven wheel 212. The road wheels are in continuous contact with the support surface during the sliding of the arm 210 relative to the vehicle body 100. The floating pressure bearing assembly 230 is used to bear the pressure of the cargo 300 and floats relative to the arm 210 when pressurized, and the floating pressure bearing assembly 230 is connected to the arm 210. Alternatively, the floating pressure-bearing assembly 230 may be movably connected to the arm 210, further alternatively, the floating pressure-bearing assembly 230 may be slidably connected to the arm 210, and the floating pressure-bearing assembly 230 may be elastically connected to the arm 210 through an elastic member, in which case the whole of the floating pressure-bearing assembly 230 may float with respect to the arm 210; the floating pressure bearing assembly 230 may be fixedly connected to the arm 210, in which case a portion of the floating pressure bearing assembly 230 may be deformed to float relative to the arm 210; the floating pressure bearing assembly 230 and the arm 210 may be connected directly or indirectly through other means.

With the floating pressure bearing assembly 230 compressed, a portion of the floating pressure bearing assembly 230 deforms, i.e., a portion of the floating pressure bearing assembly 230 floats relative to the arm body 210, or the floating pressure bearing assembly 230 moves relative to the arm body 210 in the height direction of the transfer arm 200 so that the lower end surface of the floating pressure bearing assembly 230 can contact the support surface. The supporting surface may include a surface for supporting the ground, an upper surface of the rail, and the like. Alternatively, in the case that the supporting surface is a flat ground, the lower end surface of the floating pressure-bearing assembly 230 can be in contact with the ground when being pressed, and at this time, the lower end surface of the floating pressure-bearing assembly 230 is flush with the lower end surface of the travelling wheel; in the case where the support surface is an uneven ground, the lower end surface of the floating pressure bearing assembly 230 may be in contact with the ground when it is pressed, and the lower end surface of the floating pressure bearing assembly 230 may be higher or lower than the lower end surface of the road wheel.

In this embodiment, when the handling arm 200 is inserted under the cargo 300, the cargo 300 applies pressure to the floating pressure-bearing assembly 230, so that a part of the floating pressure-bearing assembly 230 is deformed, or the whole of the floating pressure-bearing assembly 230 moves relative to the arm body 210 in the height direction of the handling arm 200, so that the lower end surface of the floating pressure-bearing assembly 230 can contact with the supporting surface, that is, the lower end surface of the floating pressure-bearing assembly 230 and the travelling wheels are both contacted with the supporting surface, the contact area between the handling device and the supporting surface is increased, and the pressure born by the travelling wheels can be shared by the floating pressure-bearing assembly 230, so as to avoid damage caused by overlarge pressure of the travelling wheels.

In an alternative embodiment, the entirety of the floating pressure bearing assembly 230 may float relative to the arm body 210, and the carrier arm 200 includes only the arm body 210 and the floating pressure bearing assembly 230, with the floating pressure bearing assembly 230 moving in a directly vertically downward direction when the floating pressure bearing assembly 230 is pressurized. In another embodiment, the handling arm 200 further includes an elastic member 220, wherein a first end of the elastic member 220 is connected to the floating pressure assembly 230, and a second end of the elastic member 220 is connected to the arm body 210. With floating pressure bearing assembly 230 compressed, floating pressure bearing assembly 230 applies a force to elastic member 220 causing elastic deformation of elastic member 220, i.e., elastic member 220 is compressed. Alternatively, the elastic member 220 may be, but is not limited to, a spring.

With the embodiment, when the handling arm 200 is inserted under the cargo 300, the cargo 300 applies pressure to the floating pressure-bearing assembly 230, the elastic member 220 is elastically deformed, and the elastic member 220 is utilized to buffer the acting force applied to the arm body 210 by the floating pressure-bearing assembly 230, so as to avoid the arm body 210 from bearing excessive pressure in a short time, and further avoid the travelling wheel from bearing excessive pressure in a short time. Meanwhile, when the cargo 300 no longer applies pressure to the floating pressure bearing assembly 230, the elastic members 220 are restored to deform, thereby driving the floating pressure bearing assembly 230 away from the ground such that the floating pressure bearing assembly 230 is not in contact with the supporting surface.

In an alternative embodiment, as shown in fig. 8, the floating bearing assembly 230 includes a floating seat 231, where the floating seat 231 has a strip structure, the floating seat 231 includes a main body 2311 and a rim 2312 connected to each other, the rim 2312 is disposed at an end of the main body 2311, alternatively, the main body 2311 has a strip structure, the main body 2311 is provided with a strip groove, and other structures are disposed in the strip groove, and the rim 2312 is disposed at an end of the main body 2311 along the length direction. As shown in fig. 9, the arm body 210 is provided with a mounting piece 214, the rim portion 2312 is opposite to the mounting piece 214 in the height direction of the transporting arm 200, the first end of the elastic member 220 is connected to the rim portion 2312, and the second end of the elastic member 220 is connected to the mounting piece 214. The lower end surface of body portion 2311 is able to contact a support surface in the event that floating pressure bearing assembly 230 is pressurized. By adopting the present embodiment, the edge portion 2312 and the mounting piece 214 are provided, so that the elastic member 220 is disposed outside the main body portion 2311, the elastic member 220 is prevented from being disposed at the main body portion 2311 and occupying the space of other structures, and the elastic deformation process of the elastic member 220 is prevented from being affected by other structures.

In alternative embodiments, the lowest point of the rim portion 2312 is flush with the highest point of the body portion 2311, or the lowest point of the rim portion 2312 is higher than the highest point of the body portion 2311. In the latter embodiment, compared with the previous embodiment, the edge portion 2312 is at a higher position, so that the distance between the edge portion 2312 and the mounting plate 214 is increased, and the elastic member 220 is disposed between the edge portion 2312 and the mounting plate 214, which is beneficial to increasing the elastic deformation amount of the elastic member 220 and improving the buffering effect.

In an alternative embodiment, the number of elastic members 220 is one; alternatively, as shown in fig. 5 and 6, at least two elastic members 220 are provided at intervals in the extending direction of the arm body 210 and/or in the width direction of the arm body 210. In the latter embodiment, the number of the elastic members 220 is increased, and different elastic members 220 support different positions of the floating bearing assembly 230 respectively, so as to buffer different positions of the floating bearing assembly 230, and meanwhile, the plurality of positions of the arm 210 support the floating bearing assembly 230 through the elastic members 220, which is more beneficial to reducing the pressure born by the arm 210 and avoiding the excessive pressure born by the travelling wheel in a short time.

Optionally, the arm 210 is provided with at least two mounting pieces 214, and the at least two mounting pieces 214 are spaced along the extending direction of the arm 210; the floating seat 231 includes at least two edge portions 2312, wherein the two edge portions 2312 are respectively located at two ends of the main body portion 2311 along the extending direction of the floating seat 231, the mounting pieces 214 are in one-to-one correspondence with the edge portions 2312, and at least two elastic members 220 are disposed between the mounting pieces 214 and the corresponding edge portions 2312.

In an alternative embodiment, floating pressure bearing assembly 230 includes floating seat 231, and at least a portion of floating seat 231 moves downward from the edge of arm 210 under pressure of floating pressure bearing assembly 230 so that the lower end surface of floating seat 231 is flush with the lower end surface of the road wheel. In another embodiment, as shown in fig. 8 and 9, the arm body 210 is provided with an opening 213, the floating seat 231 is opposite to the opening 213, and at least part of the floating seat 231 protrudes through the opening 213 under the condition that the floating bearing assembly 230 is pressed, so that the lower end surface of the floating seat 231 can be flush with the lower end surface of the travelling wheel, and the vehicle body 100 slides relative to the carrying arm 200, that is, in the condition that the lower end surface of the floating seat 231 contacts the ground, the carrying arm 200 slides relative to the vehicle body 100 due to the larger contact area between the carrying arm 200 and the ground and larger friction force, so that the vehicle body 100 can slide relative to the carrying arm 200, so that the carrying arm 200 stretches into the accommodating groove 110, and finally the cargo 300 carried by the floating bearing assembly 230 falls on the carrying surface of the vehicle body 100. Alternatively, an opening 213 may be provided at an edge position of the arm 210, and an opening 213 may be provided at a center position of the arm 210; a portion of the body portion 2311 of the floating mount 231 protrudes through the opening 213.

With the embodiment, the floating bearing assembly 230 extends from the opening 213 formed in the arm body 210, so that the force exerted by the floating bearing assembly 230 is concentrated on the arm body 210, and the problem that the whole handling arm 200 is unstable due to the fact that a part of the floating bearing assembly 230 extends from one side of the arm body 210 is avoided, so that the embodiment is beneficial to improving the stability of the handling arm 200.

In an alternative embodiment, the projections of the opening 213 and the floating seat 231 in the height direction of the arm 200 are circular projections. In another embodiment, as shown in fig. 9, the opening 213 is a strip-shaped opening, and the lower end surface of the floating seat 231 includes a strip-shaped supporting surface, and the strip-shaped opening and the strip-shaped supporting surface each extend along the extending direction of the arm body 210. That is, the projections of the opening 213 and the floating seat 231 in the height direction of the arm 200 are all in a strip-like structure. By adopting the embodiment, the contact area between the lower end surface of the floating seat 231 and the ground is increased, so that the pressure shared by the floating seat 231 is increased, the pressure shared by the travelling wheels is reduced, and the damage of the travelling wheels due to overlarge sharing pressure can be avoided.

In an alternative embodiment, the floating bearing assembly 230 is movable relative to the arm body 210 in the height direction of the handling arm 200, i.e., the entirety of the floating bearing assembly 230 is floatable relative to the arm body 210, the floating bearing assembly 230 includes a floating seat 231 and a lifting top plate 232, the floating seat 231 is connected to the arm body 210, and the floating seat 231 is directly connected to the lifting top plate 232, and the lifting top plate 232 is used for carrying the cargo 300.

In another embodiment, as shown in fig. 1-5, the floating pressure assembly 230 further includes a lifting mechanism 233, the lifting mechanism 233 is disposed between the lifting top plate 232 and the floating seat 231, and two ends of the lifting mechanism 233 are respectively connected to the lifting top plate 232 and the floating seat 231, and when the lifting mechanism 233 is contracted or extended, the lifting top plate 232 and the floating seat 231 are moved toward or away from each other in the height direction of the handling arm 200. Alternatively, the lifting mechanism 233 may be a telescopic cylinder, and both ends of the telescopic cylinder are connected to the lifting top plate 232 and the floating seat 231, respectively. Naturally, in order to make the lifting mechanism 233 have a relatively compact structure, the lifting mechanism 233 may also have a foldable structure, and in any case, the lifting top plate 232 and the floating seat 231 may be moved closer to or farther from each other by the telescopic action of the lifting mechanism 233 itself.

With the present embodiment, the lifting and lowering of the cargo 300 by the carrying arm 200 is achieved by the contraction and extension of the lifting mechanism 233, so that the cargo 300 effectively avoids the obstacle, and the cargo 300 is conveniently and smoothly carried to the carrying surface of the vehicle body 100. Further, the carrier arm 200 can be accommodated in the vehicle body 100 by contraction of the lifting mechanism 233, thereby reducing the space occupation.

When the cargo 300 is carried by using the carrying arm 200, the vehicle body 100 moves to the vicinity of the cargo 300, the carrying arm 200 extends out of the accommodating groove 110, the lifting mechanism 233 is in a contracted state, the carrying arm 200 can be inserted into the bottom of the cargo 300, the cargo 300 falls on the lifting top plate 232, and the lower end face of the floating seat 231 is in contact with the ground; then the lifting mechanism 233 is extended, the lifting top plate 232 is lifted and lifts the cargo 300, the vehicle body 100 moves relative to the carrying arm 200, so that the carrying arm 200 is retracted into the accommodating groove 110, the cargo 300 is located above the vehicle body 100, finally the lifting mechanism 233 is contracted, the lifting top plate 232 is lowered, the cargo 300 falls on the vehicle body 100, and the vehicle body 100 can convey the cargo 300 to the target position.

In the case where the lifting mechanism 233 adopts a foldable structure, a user can drive the foldable structure to fold or unfold by manual action, and fix the foldable structure in a folded state or an unfolded state by a clip structure or a locking structure or the like. However, this is inefficient in manual lifting and is detrimental to the transportation of the cargo 300. To solve this problem, as shown in connection with fig. 5 and 7, the floating pressure assembly 230 further includes a driving mechanism 234, wherein the driving mechanism 234 is disposed on the floating seat 231, and the driving mechanism 234 is connected to the lifting mechanism 233 to drive the lifting mechanism 233 to retract or extend. Alternatively, the lifting mechanism 233 adopts a foldable structure, and the driving mechanism 234 drives the foldable structure to fold or unfold. With the embodiment, the lifting mechanism 233 is directly driven to shrink or stretch by the driving mechanism 234, which is beneficial to improving the state switching efficiency of the lifting mechanism 233 and improving the conveying efficiency of the cargo 300.

In an alternative embodiment, the lifting mechanism 233 includes a first rotating arm 2331 and a second rotating arm 2332 rotatably connected, alternatively, the center of the first rotating arm 2331 is rotatably connected with the center of the second rotating arm 2332, and the center of the first rotating arm 2331 and the center of the second rotating arm 2332 may be provided with through holes penetrating the through holes of the first rotating arm 2331 and the through holes of the second rotating arm 2332 with a rotating shaft. At least one of the first end of the first rotating arm 2331 and the first end of the second rotating arm 2332 is slidably connected with the floating seat 231, at least one of the second end of the first rotating arm 2331 and the second end of the second rotating arm 2332 is slidably connected with the lifting top plate 232, and the driving mechanism 234 is connected with at least one of the first rotating arm 2331 and the second rotating arm 2332 to drive the first end of the first rotating arm 2331 and the first end of the second rotating arm 2332 to approach or separate from each other. Alternatively, the driving mechanism 234 is connected to one of the first and second rotating arms 2331 and 2332, and the driving mechanism 234 drives one of the first end of the first rotating arm 2331 and the first end of the second rotating arm 2332 to slide while one of the first end of the first rotating arm 2331 and the first end of the second rotating arm 2332 is slidingly connected to the floating seat 231 and the other of the first end of the first rotating arm 2331 and the first end of the second rotating arm 2332 is rotatably connected to the floating seat 231; the driving mechanism 234 may also simultaneously drive the first end of the first rotating arm 2331 and the first end of the second rotating arm 2332 to slide, where the first end of the first rotating arm 2331 and the first end of the second rotating arm 2332 may be slidably connected to the floating seat 231, and further alternatively, two driving mechanisms 234 may be provided, and the two driving mechanisms 234 may respectively drive the first end of the first rotating arm 2331 and the first end of the second rotating arm 2332 to slide.

When the driving mechanism 234 drives the first end of the first rotating arm 2331 and the first end of the second rotating arm 2332 to approach each other, the height of the rotating pivot at the joint of the first rotating arm 2331 and the second rotating arm 2332 is raised, so that the second end of the first rotating arm 2331 and the second end of the second rotating arm 2332 lift the lifting top plate 232, and the cargo 300 is lifted to a certain height; when the driving mechanism 234 drives the first end of the first rotating arm 2331 and the second end of the second rotating arm 2332 to move away from each other, the height of the pivot point at the connection between the first rotating arm 2331 and the second rotating arm 2332 is lowered, so that the second end of the first rotating arm 2331 and the second end of the second rotating arm 2332 drive the lifting top plate 232 to descend, and the cargo 300 is also lowered to a certain height.

In the present embodiment, at least two first rotating arms 2331 and second rotating arms 2332 are respectively provided at intervals in the width direction of the arm body 210, and the first rotating arms 2331 and the second rotating arms 2332 are in one-to-one correspondence. Alternatively, the first and second rotating arms 2331 and 2332 are respectively provided at intervals, i.e., the first and second rotating arms 2331 and 2332 are respectively provided in a pair. In this way, at least two first rotating arms 2331 and second rotating arms 2332 support different positions of the lifting top plate 232 respectively, so that the overall stability of the lifting top plate 232 in the lifting process and the descending process is ensured, and further the stability of the goods 300 in the lifting process and the descending process is ensured.

Optionally, the lifting mechanism 233 may further include a lifting rod, where a first end of the lifting rod is rotatably connected to the driving mechanism 234, and a second end of the lifting rod may be connected to the first end of the first rotating arm 2331 or the first end of the second rotating arm 2332, and a second end of the lifting rod may also be rotatably connected to the rotating shaft, or may also be rotatably connected to the lifting top plate 232. In the initial state, the lifting rod is horizontally arranged in the floating seat 231, when the driving mechanism 234 works, the driving mechanism 234 can drive the lifting rod to rotate, so that the lifting rod rotates from the horizontal state to the vertical state, and further under the lifting action of the lifting rod, the first end of the first rotating arm 2331 and the second end of the second rotating arm 2332 are close to each other, the lifting top plate 232 is lifted, and the lifting process is realized.

In an alternative embodiment, as shown in fig. 6, the floating seat 231 is provided with a sliding slot a, and at least one of the first end of the first rotating arm 2331 and the first end of the second rotating arm 2332 extends into the sliding slot a and is in sliding fit with the sliding slot a. Alternatively, in a case where one of the first end of the first rotating arm 2331 and the first end of the second rotating arm 2332 is slidable with respect to the floating seat 231 and the other is fixed in position with respect to the floating seat 231, the first end of the first rotating arm 2331 or the first end of the second rotating arm 2332 protrudes into the chute a; in the case where both the first end of the first swing arm 2331 and the first end of the second swing arm 2332 are slidable with respect to the floating seat 231, both the first end of the first swing arm 2331 and the first end of the second swing arm 2332 extend into the slide groove a. With the present embodiment, the sliding direction of the first end of the first rotating arm 2331 or the first end of the second rotating arm 2332 is guided by the slide groove a, and the sliding direction deviation of the first end of the first rotating arm 2331 or the first end of the second rotating arm 2332 is avoided.

In an alternative embodiment, as shown in fig. 6, the floating seat 231 is provided with a mounting hole b for mounting the driving mechanism 234. Optionally, the drive mechanism 234 includes a decelerator 2344, and a mounting hole may be used to mount the decelerator 2344. In this way, the driving mechanism 234 is conveniently mounted to the floating seat 231 through the mounting hole b, and the mounting stability of the driving mechanism 234 is ensured.

Of course, the floating seat 231 may also be provided with avoiding structures, such as avoiding grooves, avoiding holes, and the like, so as to avoid mutual interference of structures provided on the floating seat 231. Optionally, the sliding groove a, the mounting hole b and the avoiding structure are all disposed on the main body 2311.

In an alternative embodiment, as shown in fig. 7, the driving mechanism 234 includes a driving source 2341, a screw 2342, and a screw nut 2343, an output shaft of the driving source 2341 is connected to the screw 2342 to drive the screw 2342 to rotate, the screw nut 2343 is screw-engaged with the screw 2342, and the screw nut 2343 is used to drive the first end of the first rotating arm 2331 or the first end of the second rotating arm 2332 to slide when the screw 2342 rotates. Specifically, the lead screw nut 2343 is connected to the first end of the first rotating arm 2331 or the first end of the second rotating arm 2332, and the output shaft of the driving source 2341 and the lead screw 2342 are both disposed along the extending direction of the arm body 210. Alternatively, the lead screw nut 2343 may be coupled to the first end of the first rotating arm 2331 or the first end of the second rotating arm 2332 by the above-described jacking rod. Alternatively, the driving source 2341 may be a driving source that supplies rotational power to a motor, an air motor, or the like; the lead screw nut 2343 may be a nut. Thus, when the driving source 2341 works, the output shaft of the driving source 2341 drives the screw rod 2342 to rotate, under the limiting action of the first end of the first rotating arm 2331 or the first end of the second rotating arm 2332, the screw rod nut 2343 cannot rotate along with the screw rod 2342, and the screw rod nut 2343 can move relative to the screw rod 2342, so that the screw rod 2343 moves along the axis of the screw rod 2342 when the screw rod 2342 rotates, and then the first end of the first rotating arm 2331 and the first end of the second rotating arm 2332 are driven to be close to or far away from each other.

Of course, in other embodiments, the driving mechanism 234 may be a telescopic cylinder, where one end of the telescopic cylinder is fixedly connected to the floating seat 231, and the second end of the telescopic cylinder is connected to the first end of the first rotating arm 2331 or the first end of the second rotating arm 2332, and the first end of the first rotating arm 2331 and the first end of the second rotating arm 2332 are driven to approach each other or separate from each other by extending or shortening the telescopic cylinder.

Optionally, the driving mechanism 234 further includes a speed reducer 2344 and a bearing fixing base 2345, the bearing fixing base 2345 is disposed in the floating base 231, and the bearing fixing base 2345 is connected to an end of the screw rod 2342 to provide support for the screw rod 2342; the input shaft of the speed reducer 2344 is connected with the output shaft of the driving source 2341, the output shaft of the speed reducer 2344 is connected with the screw rod 2342, the driving source 2341 drives the screw rod 2342 to rotate through the speed reducer 2344, and the speed reducer 2344 is used for reducing the rotating speed of the screw rod 2342 and improving the output torque.

In alternative embodiments, the road wheels include a drive wheel 211 and a driven wheel 212, with the floating pressure assembly 230 being located on the side of the drive wheel 211 facing away from the driven wheel 212, or the floating pressure assembly 230 being located on the side of the driven wheel 212 facing away from the drive wheel 211. As such, the stability of the carrier arm 200 is poor during the sliding of the carrier arm 200 relative to the vehicle body 100. In another embodiment, as shown in fig. 5 and 6, a driving wheel 211 and a driven wheel 212 are respectively disposed at both ends of the arm 210 in the length direction thereof, and a floating pressure-bearing assembly 230 is disposed between the driving wheel 211 and the driven wheel 212. With the present embodiment, the driving wheel 211 and the driven wheel 212 are both in contact with the ground, and respectively support the front end and the rear end of the arm body 210, which is beneficial to improving the stability of the carrier arm 200 during sliding relative to the vehicle body 100.

In an alternative embodiment, as shown in fig. 1, the number of the handling arms 200 is at least two, and the handling arms 200 are spaced apart, and each handling arm 200 includes the arm body 210, the floating bearing assembly 230, and the elastic member 220 described above. In this way, at least two of the carrier arms 200 simultaneously support the cargo 300, which is beneficial to reducing the pressure borne by the road wheels of each carrier arm 200; moreover, when the floating bearing assemblies 230 of each carrying arm 200 are pressed simultaneously, the lower end surfaces of the floating bearing assemblies 230 are in contact with the ground, so that the total contact area of the carrying arms 200 and the ground is further increased, the pressure born by the travelling wheels is further reduced, and the damage caused by overlarge pressure of the travelling wheels is avoided.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.

Claims (13)

1. A carrying device, which is characterized by comprising a vehicle body (100) and a carrying arm (200), wherein the carrying arm (200) can slide relative to the vehicle body (100), the carrying arm (200) comprises an arm body (210) and a floating pressure-bearing assembly (230), the arm body (210) is connected with the vehicle body (100) in a sliding way, the arm body (210) is rotatably provided with a travelling wheel, the floating pressure-bearing assembly (230) is connected with the arm body (210),

with the floating pressure bearing assembly (230) pressurized, a portion of the floating pressure bearing assembly (230) is deformed or the floating pressure bearing assembly (230) is moved relative to the arm body (210) in the height direction of the handling arm (200) so that the lower end surface of the floating pressure bearing assembly (230) can be in contact with a support surface.

2. The handling device of claim 1, wherein the handling arm (200) further comprises an elastic member (220), a first end of the elastic member (220) being connected to the floating pressure assembly (230), and a second end of the elastic member (220) being connected to the arm body (210).

3. Handling device according to claim 2, wherein at least two of said elastic members (220) are arranged at intervals in the extension direction of said arm body (210) and/or in the width direction of said arm body (210).

4. The handling device according to claim 2, wherein the floating bearing assembly (230) comprises a floating seat (231), the floating seat (231) is in a strip-shaped structure, the floating seat (231) comprises a main body portion (2311) and a rim portion (2312) which are connected, the rim portion (2312) is arranged at the end portion of the main body portion (2311), the arm body (210) is provided with a mounting plate (214), a first end of the elastic member (220) is connected with the rim portion (2312), a second end of the elastic member (220) is connected with the mounting plate (214), and the lower end face of the main body portion (2311) can be contacted with the supporting surface under the condition that the floating bearing assembly (230) is pressed.

5. The handling device according to claim 4, wherein the lowest point of the rim portion (2312) is higher than the highest point of the main body portion (2311).

6. Handling device according to claim 1, wherein the floating pressure assembly (230) comprises a floating seat (231), the arm body (210) is provided with an opening (213), the floating seat (231) is opposite to the opening (213), and in case of the floating pressure assembly (230) being pressed, at least part of the floating seat (231) protrudes through the opening (213) so that the lower end surface of the floating seat (231) can be flush with the lower end surface of the travelling wheel, and the vehicle body (100) is slidable relative to the handling arm (200).

7. Handling device according to claim 6, wherein the opening (213) is a strip-shaped opening and the lower end surface of the floating seat (231) comprises a strip-shaped support surface, both extending in the extension direction of the arm body (210).

8. The handling device according to claim 1, wherein the floating pressure-bearing assembly (230) is movable relative to the arm body (210) in a height direction of the handling arm (200), the floating pressure-bearing assembly (230) comprises a floating base (231), a lifting top plate (232) and a lifting mechanism (233), the floating base (231) is connected with the arm body (210), the lifting mechanism (233) is arranged between the lifting top plate (232) and the floating base (231), and two ends of the lifting mechanism (233) are respectively connected with the lifting top plate (232) and the floating base (231), and when the lifting mechanism (233) is contracted or extended, the lifting top plate (232) and the floating base (231) are mutually close to or far from each other in the height direction of the handling arm (200).

9. The handling device of claim 8, wherein the floating pressure assembly (230) further comprises a driving mechanism (234), the driving mechanism (234) is disposed on the floating seat (231), and the driving mechanism (234) is connected to the lifting mechanism (233) to drive the lifting mechanism (233) to retract or extend.

10. The handling device according to claim 9, wherein the lifting mechanism (233) comprises a first rotating arm (2331) and a second rotating arm (2332) rotatably connected, at least one of a first end of the first rotating arm (2331) and a first end of the second rotating arm (2332) is slidably connected with the floating seat (231), at least one of a second end of the first rotating arm (2331) and a second end of the second rotating arm (2332) is slidably connected with the lifting top plate (232), and the driving mechanism (234) is connected with at least one of the first rotating arm (2331) and the second rotating arm (2332) to drive the first end of the first rotating arm (2331) and the first end of the second rotating arm (2332) to approach or separate from each other.

11. The handling device according to claim 10, wherein the floating seat (231) is provided with a chute (a), at least one of the first end of the first swivel arm (2331) and the first end of the second swivel arm (2332) extending into the chute (a) and being in sliding engagement with the chute (a);

and/or the floating seat (231) is provided with a mounting hole (b) for mounting the driving mechanism (234).

12. The handling device according to claim 10, wherein the drive mechanism (234) comprises a drive source (2341), a screw (2342) and a screw nut (2343), an output shaft of the drive source (2341) is connected to the screw (2342) to drive the screw (2342) to rotate, the screw nut (2343) is in threaded engagement with the screw (2342), and the screw nut (2343) is configured to drive the first end of the first rotating arm (2331) or the first end of the second rotating arm (2332) to slide when the screw (2342) rotates.

13. The carrying device according to claim 1, wherein the travelling wheel comprises a driving wheel (211) and a driven wheel (212), the driving wheel (211) and the driven wheel (212) are respectively arranged at two ends of the arm body (210) along the length direction of the arm body, and the floating bearing assembly (230) is positioned between the driving wheel (211) and the driven wheel (212).