CN210339465U

CN210339465U - Goods climbing mechanism

Info

Publication number: CN210339465U
Application number: CN201920912321.7U
Authority: CN
Inventors: 张�杰
Original assignee: Guangzhou Jerry Intelligent Technology Co ltd
Current assignee: Guangzhou Jerry Intelligent Technology Co ltd
Priority date: 2019-06-17
Filing date: 2019-06-17
Publication date: 2020-04-17
Anticipated expiration: 2029-06-17

Abstract

The utility model discloses a goods jacking mechanism, which comprises a lifting frame, a circulating feeding mechanism arranged on the lifting frame and a vertical driving mechanism for driving the lifting frame to move vertically; the circulating feeding mechanism comprises a plurality of feeding pieces with circulating structures and a feeding driving mechanism for driving the feeding pieces to move circularly; the crane comprises a first lifting plate and a second lifting plate which are oppositely arranged, and the vertical driving mechanism comprises a power source component, four driving structures and a transmission mechanism, wherein the power source component is arranged on the rack and used for outputting power, and the transmission mechanism transmits the power of the power source component to the driving structures so as to enable the four driving structures to synchronously move. The utility model provides the high motion stability of crane for the goods stops in the optional position of lifter plate, and the homoenergetic can be steadily rebound, thereby is favorable to the goods to carry out subsequent transfer and transport.

Description

Goods climbing mechanism

Technical Field

The utility model relates to a cargo transportation equipment, concretely relates to goods climbing mechanism.

Background

In the field of cargo conveying pipelines, cargo conveying is generally realized by adopting a double-speed chain or a conveying roller. Although can lead to the goods to produce certain beating when doubly fast chain or conveying roller carry the goods, it can let the goods carry out the turn round of arbitrary angle and remove to increase the moving direction of goods, so that the goods is carried. However, when the goods need to be conveyed by turning at right angles, the goods move on the double-speed chain at the corner or the conveying roller due to the large turning angle, so that the stability is greatly reduced, the vibration is obvious, and the goods are easily damaged. In order to solve the stability of goods when turning round and carrying, the general way is to adopt two mutually perpendicular's conveying chain, and set up climbing mechanism at the end of one of them conveying chain, when the goods moved to the end of this conveying chain, climbing mechanism jack-up the goods, separate with this conveying chain, transfer the goods from lifting mechanism to another conveying chain through the conveyer belt afterwards, thereby accomplish the transfer of goods on two conveying chains, and then finally realize the ninety degrees transport that turns round of goods, for example the utility model patent "a jacking location conveying mechanism" of grant publication No. CN 207046311U.

However, when the goods move on the conveying chain, the goods cannot be ensured to be positioned at the center when moving to the jacking mechanism because the positions of the goods during loading are not uniform or the positions of the goods move due to vibration during the conveying process; and general climbing mechanism on the market reciprocates by vertical actuating mechanism (for example cylinder) drive lifter plate to vertical actuating mechanism's power take off point is connected with the center of lifter plate, consequently, when the goods was located the edge of climbing mechanism's lifter plate, stability when jacking to the goods obviously reduced, was unfavorable for rising to appointed position with the accurate jack-up of goods, thereby influences subsequent transport or shifts.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome prior art's is not enough, provides a goods climbing mechanism, and this mechanism can be steadily with goods jack-up, ensures the smooth transfer of goods, is favorable to improving the conveying speed of goods.

The purpose of the utility model is realized through the following technical scheme:

a goods jacking mechanism is characterized by comprising a lifting frame, a circulating feeding mechanism arranged on the lifting frame and a vertical driving mechanism for driving the lifting frame to move vertically; the circulating feeding mechanism comprises a plurality of feeding pieces with circulating structures and a feeding driving mechanism for driving the feeding pieces to move circularly; the lifting frame comprises a first lifting plate and a second lifting plate which are oppositely arranged, and the vertical driving mechanism comprises a power source member which is arranged on the frame and used for outputting power, four driving structures which are used for directly driving the lifting frame to lift and a transmission mechanism which transmits the power of the power source member to the driving structures so as to drive the four driving structures to synchronously move; the four driving structures are arranged on the first lifting plate and the second lifting plate in a pairwise manner, and the two driving structures on the first lifting plate and the two driving structures on the second lifting plate are arranged oppositely.

The working principle of the cargo jacking mechanism is as follows:

the utility model discloses a goods climbing mechanism sets up between the tip of two mutually perpendicular's conveying chain, the moving direction of circulating feeding mechanism's pay-off piece is the same with the direction of delivery of the conveying chain after the goods shifts.

The goods move on the conveying chain before transferring, when the goods move to the end part of the conveying chain and are transferred to the position above the feeding piece on the lifting frame, the power source component of the vertical driving mechanism transmits power to the four driving structures through the transmission mechanism, so that the first lifting plate and the second lifting plate are driven to move upwards, and the goods are supported on the feeding piece and move upwards to be separated from the conveying chain before transferring; meanwhile, the feeding driving mechanism drives the feeding piece to move circularly, goods on the feeding piece are conveyed forwards, so that the goods are transferred to the conveying chain after being transferred, the subsequent conveying of the goods is completed by the conveying chain, and the transfer conveying of the goods is completed.

According to a preferred scheme of the utility model, two groups of transmission mechanisms are arranged on the vertical driving mechanism, two power source components are arranged, and the two power source components correspond to the two groups of transmission mechanisms one by one;

each group of transmission mechanisms consists of a gear transmission mechanism, the gear transmission mechanism comprises two transmission gears, the power source component is arranged between the two transmission gears, and two sides of a power output part of the power source component are connected with the two transmission gears in a matching way; the four driving structures are all composed of driven lifting rods, racks matched and connected with the transmission gears are arranged on the driven lifting rods, and the four driven lifting rods are matched and connected with the two transmission gears of the two groups of transmission mechanisms one by one; two opposite transmission gears in the two groups of transmission mechanisms are provided with synchronous rods for driving the two transmission gears to synchronously rotate.

Preferably, the power source component is composed of a cylinder, two sides of a telescopic piece of the cylinder are respectively provided with a transmission rack matched with the transmission gear, and the telescopic piece of the cylinder forms the power output piece. When the lifting device works, the up-and-down movement of the telescopic piece is controlled through the air cylinder, so that the transmission gears connected to the two sides of the telescopic piece in a matched mode are driven to rotate, the driven lifting rod drives the whole lifting frame to move up and down, and the lifting of goods is achieved; the lifting of the lifting frame is realized by driving the gear transmission mechanism to move in a cylinder mode, so that the lifting of goods is completed, the structure is simple, the driving gear is driven to be in place once by the cylinder, and the lifting speed is increased.

Preferably, the gear transmission mechanism further comprises a transition gear disposed between the transmission gear and the driven lifting rod; transition synchronous rods are arranged between corresponding transition gears in the two groups of transmission mechanisms. Through the arrangement of the transition gear, the transverse length of the whole gear transmission mechanism can be increased, so that two transmission gears can be driven to rotate simultaneously through one power source component, and the lifting driving of the lifting plate is realized; simultaneously, increase gear drive's horizontal length to increase the distance between two driven lifter, and then can increase the area of crane, make the goods remove more easily to the pay-off piece of crane, so that the transfer of goods.

The utility model discloses a preferred scheme still includes two parallel arrangement's fixed plate, two fixed plate settings are between first lifter plate and second lifter plate, the both ends of synchronizing bar and transition synchronizing bar rotate respectively and connect on two fixed plates.

The utility model discloses a preferred scheme, the pay-off piece comprises belt drive mechanism, and this belt drive mechanism includes the action wheel, follows driving wheel and conveyer belt, the action wheel sets up respectively on first lifter plate and the second lifter plate from the driving wheel, the conveyer belt encircles and sets up at the action wheel and from between the driving wheel, the action wheel is connected with pay-off actuating mechanism's power take off shaft.

Preferably, the feeding part has a plurality of, be equipped with driving shaft and driven shaft on first lifter plate and the second lifter plate respectively, belt drive's action wheel all sets up on the driving shaft, and belt drive's driven round of all sets up on the driven shaft, pay-off actuating mechanism's power output shaft and driving shaft are connected, all are equipped with between a plurality of belt drive's the conveyer belt and dodge the space. When the conveying chain adopts the conveying roller, directly set up whole goods climbing mechanism in the below of the end of conveying chain, after the goods removed the end of conveying chain, through vertical actuating mechanism drive crane rebound, a plurality of belt drive mechanism's conveyer belt all passes and rises from the space between the conveying roller to jack up the goods, then under pay-off actuating mechanism's drive, directly carry another conveying chain with the goods on. Therefore, the structure of the whole conveying chain is more compact, the device is convenient to arrange, the space is saved, and the design is ingenious.

The utility model discloses a preferred scheme, all be equipped with vertical guiding mechanism between frame and first lifter plate and the second lifter plate, this vertical guiding mechanism includes mounting and slider, the mounting is fixed to be set up in the frame and be equipped with the sliding groove on the mounting, one side of slider is fixed to be set up on first lifter plate and second lifter plate, and slider sliding connection is in the sliding groove of mounting. Through vertical guiding mechanism's setting, with four synchronous motion's drive structure combination together, stability and accurate nature when further improving the crane up-and-down motion can not appear local card and die, and then ensure the stability and the high efficiency that the goods removed.

The utility model discloses a preferred scheme, power supply member and drive mechanism all have four, and with four drive structure one-to-ones are connected. The power source component is composed of a motor, the transmission mechanism is composed of a screw rod transmission mechanism, a screw rod of the screw rod transmission mechanism is connected with a main shaft of the motor, and a screw rod nut of the screw rod transmission mechanism is connected with a corresponding driving structure.

According to a preferred scheme of the utility model, the four driving structures are composed of a screw rod transmission mechanism, the transmission mechanism is composed of a toothed chain transmission mechanism, and the power source component is composed of a power motor; the screw rod transmission mechanisms are vertically arranged, and the lifting frames are connected with screw rod nuts of all the screw rod transmission mechanisms; the gear chain transmission mechanism comprises a driving gear, four driven gears and a chain, the four driven gears are arranged on lead screws of the four lead screw transmission mechanisms respectively, the driving gear is connected with a main shaft of the power motor, and the chain is wound on the driving gear and the four driven gears.

Compared with the prior art, the utility model following beneficial effect has:

make vertical removal's drive structure through setting up four direct drive cranes to make four drive structure synchronous motion under drive mechanism's effect, make whole crane have four stable power take off points, improve the motion stability of crane, thereby make the goods stop in the optional position of lifter plate, all can upwards remove steadily, thereby be favorable to the goods to carry out subsequent transfer and transport.

Drawings

Fig. 1-2 are schematic structural diagrams of a first embodiment of a cargo jacking mechanism according to the present invention, wherein fig. 1 is a front view (a fixing plate is not shown), and fig. 2 is a top view (a feeding driving mechanism is not shown).

Fig. 3 is a plan view of fig. 2 with the transfer conveyor and the attachment plate omitted.

Fig. 4 is a schematic plan view of the use state of the cargo jacking mechanism of the present invention.

Fig. 5 is a schematic top view of a third embodiment of a cargo jacking mechanism according to the present invention.

Fig. 6 is a schematic top view of a fourth embodiment of a cargo jacking mechanism according to the present invention.

Detailed Description

The present invention will be further described with reference to the following examples and drawings, but the embodiments of the present invention are not limited thereto.

Example 1

Referring to fig. 1 to 3, the cargo jacking mechanism of the embodiment includes a lifting frame, a circulating feeding mechanism arranged on the lifting frame, and a vertical driving mechanism for driving the lifting frame to move vertically; the circulating feeding mechanism comprises a plurality of feeding pieces with circulating structures and a feeding driving mechanism for driving the feeding pieces to move circularly; the lifting frame comprises a first lifting plate 1 and a second lifting plate 24 which are oppositely arranged, and the vertical driving mechanism comprises a power source member which is arranged on the frame and used for outputting power, four driving structures which are used for directly driving the lifting frame to lift and a transmission mechanism which transmits the power of the power source member to the driving structures so as to promote the four driving structures to synchronously move; the four driving structures are arranged on the first lifting plate 1 and the second lifting plate 24 in pairs, and the two driving structures on the first lifting plate 1 and the two driving structures on the second lifting plate 24 are arranged oppositely.

Referring to fig. 1-3, there are two sets of transmission mechanisms of the vertical driving mechanism, there are two power source components, and the two power source components correspond to the two sets of transmission mechanisms one by one;

each group of transmission mechanisms consists of a gear transmission mechanism, the gear transmission mechanism comprises two transmission gears 14, the power source component is arranged between the two transmission gears 14, and two sides of a power output part of the power source component are connected with the two transmission gears 14 in a matching way; the four driving structures are all composed of driven lifting rods 6, racks matched and connected with the transmission gears 14 are arranged on the driven lifting rods 6, and the four driven lifting rods 6 are matched and connected with the two transmission gears 14 of the two groups of transmission mechanisms one by one; and a synchronous rod 5 is arranged between the corresponding transmission gears 14 in the two groups of transmission mechanisms. Through the setting of synchronizing bar 5, ensure two sets of drive mechanism's synchronism for four drive structure drive crane goes up and down in step, make each position of crane receive even driving force effect, under the unbalance loading effect, also can ensure that the crane carries out elevating movement accurately, guarantee the horizontal accuracy of crane.

Referring to fig. 1-3, the power source member of the present embodiment is formed of a cylinder, which has a driving rack gear fitted with a driving gear 14 on both sides of a telescopic part 12, and the telescopic part 12 of the cylinder forms the power output part. When the lifting device works, the up-and-down movement of the telescopic part 12 is controlled through the air cylinder, so that the transmission gears 14 connected to the two sides of the telescopic part 12 in a matching mode are driven to rotate, the driven lifting rod 6 drives the whole lifting frame to move up and down, and the lifting of goods is realized; the lifting frame is driven to move by the driving gear transmission mechanism in the air cylinder mode, so that the lifting frame is lifted, the lifting of goods is completed, the structure is simple, the driving gear 14 is driven to be in place by the air cylinder once, and the lifting speed is increased.

In addition, the power source component can also be composed of a motor, the transmission mechanism can be composed of a screw rod transmission mechanism, transmission teeth matched with the transmission gear 14 are arranged on two sides of a screw rod nut of the screw rod transmission mechanism, and a screw rod of the screw rod transmission mechanism is connected with a main shaft of the motor; the motor drives the screw rod to rotate, so that the screw rod nut vertically moves to drive the transmission gears 14 on the two sides to rotate, and finally the lifting plate is lifted.

Referring to fig. 1 to 3, the gear transmission mechanism further includes a transition gear 13, and the transition gear 13 is disposed between the transmission gear 14 and the driven lifting rod 6; transition synchronous rods 25 are arranged between the corresponding transition gears 13 in the two groups of transmission mechanisms. The transverse length of the whole gear transmission mechanism can be increased by arranging the transition gear 13, so that two transmission gears 14 are driven to rotate simultaneously by one power source component, and the lifting drive of the lifting frame is realized; simultaneously, increase gear drive's horizontal length to increase the distance between two driven lifter 6, and then can increase the area of crane, make the goods move to the material conveying spare more easily on, so that the transfer of goods.

Referring to fig. 1-3, the lifting frame further comprises two fixing plates 4 arranged in parallel, the fixing plates 4 form a part of the frame, the two fixing plates 4 are arranged between the first lifting plate 1 and the second lifting plate 24, and two ends of the synchronizing rod 5 and the transition synchronizing rod 25 are respectively rotatably connected to the two fixing plates 4.

Referring to fig. 1-3, the feeding member is composed of a belt transmission mechanism, the belt transmission mechanism comprises a driving wheel, a driven wheel and a conveying belt 8, the driving wheel and the driven wheel are respectively arranged on a first lifting plate 1 and a second lifting plate 24, the conveying belt 8 is arranged between the driving wheel and the driven wheel in a surrounding manner, and the driving wheel is connected with a power output shaft of the feeding driving mechanism

Referring to fig. 1-3, the plurality of feeding members are provided, the first lifting plate 1 and the second lifting plate 24 are respectively provided with a driving shaft 9 and a driven shaft 11, driving wheels of the belt transmission mechanisms are all arranged on the driving shaft 9, driven wheels of the belt transmission mechanisms are all arranged on the driven shaft 11, power output shafts of the feeding driving mechanisms are connected with the driving shaft 9, and avoidance spaces are arranged between the conveyer belts 8 of the plurality of belt transmission mechanisms. When the conveying chain adopts the conveying roller, directly set up whole goods climbing mechanism in the below of the end of conveying chain, after the goods removed the end of conveying chain, through vertical actuating mechanism drive crane rebound, a plurality of belt drive mechanism's conveyer belt 8 all passes and rises from the space between the conveying roller to jack up the goods, then under pay-off actuating mechanism's drive, directly carry another conveying chain with the goods on. Therefore, the structure of the whole conveying chain is more compact, the device is convenient to arrange, the space is saved, and the design is ingenious.

The feeding driving mechanism can be composed of a motor and a toothed chain transmission mechanism, wherein the toothed chain transmission mechanism comprises a driving wheel connected with a main shaft of the motor, a driven driving wheel connected with a driving shaft 9 and a transmission chain arranged between the driving wheel and the driven driving wheel in a surrounding mode.

Referring to fig. 1 to 3, vertical guide mechanisms are respectively disposed between the fixed plate 4 and the first lifting plate 1 and the second lifting plate 24, each vertical guide mechanism includes a fixed member 3 and a sliding member 2, the fixed member 3 is fixedly disposed on the fixed plate 4, a sliding groove is disposed on the fixed member 3, one side of the sliding member 2 is fixedly disposed on the first lifting plate 1 and the second lifting plate 24, and the sliding member 2 is slidably connected in the sliding groove of the fixed member 3. Through vertical guiding mechanism's setting, be favorable to improving the removal precision and the stability of lifter plate, with four synchronous motion's drive structure combination together, stability and accurate nature when further improving the crane up-and-down motion can not appear local card and die, and then ensure the stability and the high efficiency that the goods removed.

Referring to fig. 1-3, a fixed connecting plate 10 is arranged below the conveyor belt 8, the connecting plate 10 forms a part of the frame, and the cylinder body 7 of the air cylinder is fixedly arranged at the bottom of the fixed connecting plate 10. Through the setting of fixed connection board 10, the cylinder of being convenient for is fixed, simultaneously, and when the goods was overweight, when conveyer belt 8 took place too big deformation, fixed connection board 10 can support the goods, ensures that the normal transfer of goods is carried.

Referring to fig. 1 to 4, the working principle of the cargo jacking mechanism of the embodiment is as follows:

the utility model discloses a goods climbing mechanism sets up between the tip of two mutually perpendicular's conveying chain, the moving direction of circulating feeding mechanism's pay-off piece is the same with the direction of delivery of conveying chain 16 after the goods shifts.

The goods move on the conveying chain 15 before being transferred, when the goods move to the end part of the conveying chain 15, a power source component of the vertical driving mechanism transmits power to the four driving structures through the transmission mechanism, so that the first lifting plate 1 and the second lifting plate 24 are driven to move upwards, and the goods are supported on the feeding piece and move upwards to be separated from the conveying chain 15 before being transferred; meanwhile, the feeding driving mechanism drives the feeding piece to do circular motion, goods on the feeding piece are conveyed forwards, so that the goods are transferred to the conveying chain 16 after being transferred, the conveying chain 16 completes subsequent conveying of the goods, and transferring and conveying of the goods are completed.

Example 2

The difference between this embodiment and embodiment 1 is that there are four power source components and four transmission mechanisms, and the four power source components and the four transmission mechanisms are connected with the four driving structures in a one-to-one correspondence manner. The power source component is composed of a motor, the transmission mechanism is composed of a screw rod transmission mechanism, a screw rod of the screw rod transmission mechanism is connected with a main shaft of the motor, and a screw rod nut of the screw rod transmission mechanism is connected with a corresponding driving structure; the power source member may be constituted by a linear driving mechanism such as a cylinder.

Example 3

Referring to fig. 5, the present embodiment is different from embodiment 1 in that each of the four driving structures is composed of a screw transmission mechanism, the transmission mechanism is composed of a toothed chain transmission mechanism, and the power source member is composed of a power motor; the screw rod transmission mechanisms are vertically arranged, and the lifting frames are connected with screw rod nuts of all the screw rod transmission mechanisms; the toothed chain transmission mechanism comprises a driving gear 17, four driven gears 18 and a chain 19, the four driven gears 18 are respectively arranged on screw rods of the four screw rod transmission mechanisms, the driving gear 17 is connected with a main shaft of a power motor, and the chain 19 is surrounded on the driving gear 17 and the four driven gears 18.

Example 4

Referring to fig. 6, the present embodiment is different from embodiment 1 in that there are two power source members, and both are the motors 20; the transmission mechanism has two, and constitutes by the chain gear transmission mechanism. The toothed chain transmission mechanism comprises a driving gear 21, a driven gear 23 and a toothed chain 22, wherein the driven gear 23 is arranged on the synchronizing rod 5 between two transmission gears 14, the driving gear 21 is connected with a main shaft of the motor 20, and the toothed chain 22 is arranged between the driving gear 21 and the driven gear 23 in a surrounding mode.

The above is the preferred embodiment of the present invention, but the embodiment of the present invention is not limited by the above, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and all are included in the scope of the present invention.

Claims

1. A goods jacking mechanism is characterized by comprising a lifting frame, a circulating feeding mechanism arranged on the lifting frame and a vertical driving mechanism for driving the lifting frame to move vertically; the circulating feeding mechanism comprises a plurality of feeding pieces with circulating structures and a feeding driving mechanism for driving the feeding pieces to move circularly; the lifting frame comprises a first lifting plate and a second lifting plate which are oppositely arranged, and the vertical driving mechanism comprises a power source member which is arranged on the frame and used for outputting power, four driving structures which are used for directly driving the lifting frame to lift and a transmission mechanism which transmits the power of the power source member to the driving structures so as to drive the four driving structures to synchronously move; the four driving structures are arranged on the first lifting plate and the second lifting plate in a pairwise manner, and the two driving structures on the first lifting plate and the two driving structures on the second lifting plate are arranged oppositely.

2. The cargo jacking mechanism according to claim 1, wherein there are two sets of the transmission mechanisms of the vertical driving mechanism, there are two power source members, and the two power source members correspond to the two sets of the transmission mechanisms one by one;

each group of transmission mechanisms consists of a gear transmission mechanism, the gear transmission mechanism comprises two transmission gears, the power source component is arranged between the two transmission gears, and two sides of a power output part of the power source component are connected with the two transmission gears in a matching way; the four driving structures are all composed of driven lifting rods, racks matched and connected with the transmission gears are arranged on the driven lifting rods, and the four driven lifting rods are matched and connected with the transmission gears of the two groups of transmission mechanisms one by one; two opposite transmission gears in the two groups of transmission mechanisms are provided with synchronous rods for driving the two transmission gears to synchronously rotate.

3. The cargo jacking mechanism according to claim 2, wherein the power source member is constituted by a cylinder, both sides of a telescopic member of the cylinder are provided with driving racks matched with the driving gears, and the telescopic member of the cylinder constitutes the power output member.

4. The cargo jacking mechanism according to claim 2 or 3, wherein said gear transmission further comprises a transition gear disposed between the drive gear and the driven lifter; transition synchronous rods are arranged between corresponding transition gears in the two groups of transmission mechanisms.

5. The cargo jacking mechanism according to claim 4, further comprising two fixing plates arranged in parallel, wherein the two fixing plates are arranged between the first lifting plate and the second lifting plate, and two ends of the synchronizing rod and the transitional synchronizing rod are respectively and rotatably connected to the two fixing plates.

6. The cargo jacking mechanism as recited in claim 1, wherein the feeding member is formed by a belt transmission mechanism, the belt transmission mechanism comprises a driving wheel, a driven wheel and a conveying belt, the driving wheel and the driven wheel are respectively arranged on the first lifting plate and the second lifting plate, the conveying belt is arranged between the driving wheel and the driven wheel in a surrounding manner, and the driving wheel is connected with a power output shaft of the feeding driving mechanism.

7. The cargo jacking mechanism as claimed in claim 6, wherein the plurality of feeding members are provided, the first lifting plate and the second lifting plate are respectively provided with a driving shaft and a driven shaft, the driving wheels of the belt transmission mechanisms are both arranged on the driving shaft, the driven wheels of the belt transmission mechanisms are both arranged on the driven shaft, the power output shafts of the feeding driving mechanisms are connected with the driving shafts, and avoidance spaces are respectively provided between the conveyer belts of the plurality of belt transmission mechanisms.

8. The cargo jacking mechanism according to claim 1, wherein a vertical guide mechanism is arranged between the frame and the first lifting plate and the second lifting plate, the vertical guide mechanism comprises a fixed member and a sliding member, the fixed member is fixedly arranged on the frame and provided with a sliding groove, one side of the sliding member is fixedly arranged on the first lifting plate and the second lifting plate, and the sliding member is slidably connected in the sliding groove of the fixed member.

9. The cargo jacking mechanism according to claim 1, wherein there are four power source members and transmission mechanisms, and are connected to the four driving structures in a one-to-one correspondence.

10. The cargo jacking mechanism according to claim 1, wherein each of said four driving structures is constituted by a screw transmission mechanism, said transmission mechanism is constituted by a toothed chain transmission mechanism, and said power source member is constituted by a power motor; the screw rod transmission mechanisms are vertically arranged, and the lifting frames are connected with screw rod nuts of all the screw rod transmission mechanisms; the gear chain transmission mechanism comprises a driving gear, four driven gears and a chain, the four driven gears are arranged on lead screws of the four lead screw transmission mechanisms respectively, the driving gear is connected with a main shaft of the power motor, and the chain is wound on the driving gear and the four driven gears.