CN216105823U

CN216105823U - Multistage lifting platform

Info

Publication number: CN216105823U
Application number: CN202122733487.2U
Authority: CN
Inventors: 张世渡; 许明伟; 苏胡双; 张向涛; 何鹏; 王硕
Original assignee: Waite Technology Shenzhen Co ltd
Current assignee: Waite Technology Shenzhen Co ltd
Priority date: 2021-11-09
Filing date: 2021-11-09
Publication date: 2022-03-22
Anticipated expiration: 2031-11-09

Abstract

The application relates to a multi-stage lifting platform, which comprises a bearing lifting mechanism for bearing a heavy object and a fork arm lifting mechanism for lifting the bearing lifting mechanism, wherein the fork arm lifting mechanism is positioned at the lower end of the bearing lifting mechanism; the fork arm lifting mechanism comprises a first bearing frame, a lifting assembly is arranged on the first bearing frame, a second bearing frame is arranged at one end, away from the first bearing frame, of the lifting assembly, and the bearing lifting mechanism is installed on one side, away from the first bearing frame, of the second bearing frame; the multi-stage lifting platform further comprises a transverse adjusting assembly used for driving the lifting assembly to perform lifting movement, and the transverse adjusting assembly is located between the first bearing frame and the second bearing frame. This application has and bears elevating system and bear the weight of when going up bearing elevating system and bear the weight of heavy object, and the fork arm elevating system cooperation bears elevating system and uses to improve the limited effect of single-stage lift platform elevating height.

Description

Multistage lifting platform

Technical Field

The invention relates to the technical field of lifting platforms, in particular to a multi-stage lifting platform.

Background

The lifting platform is a device for vertically conveying heavy objects, and along with the development of social science and technology, the lifting platform is popularized to all corners of social life, and the characteristic of free lifting of the lifting platform is widely applied to the fields of municipal maintenance, cargo transportation of wharfs and logistics centers, building decoration and the like.

In the related art, the lifting platform is mostly a single-stage lifting device, and the single-stage lifting device generally includes a carrying platform and a hydraulic driving device for driving the carrying platform to perform lifting movement. However, the lifting height of the single-stage lifting mechanism is limited, and the requirements for different heights in the working process can not be met when the heavy objects are lifted to the unconventional height.

Aiming at the related technical means, the single-stage lifting platform has the problem of limited lifting height.

SUMMERY OF THE UTILITY MODEL

In order to improve the limited problem of single-stage lift platform lifting height, this application provides a multistage lift platform.

The application provides a multistage lift platform adopts following technical scheme:

a multi-stage lifting platform comprises a bearing lifting mechanism for bearing a heavy object and a fork arm lifting mechanism for lifting the bearing lifting mechanism, wherein the fork arm lifting mechanism is positioned at the lower end of the bearing lifting mechanism;

the fork arm lifting mechanism comprises a first bearing frame, a lifting assembly is arranged on the first bearing frame, a second bearing frame is arranged at one end, away from the first bearing frame, of the lifting assembly, and the bearing lifting mechanism is installed on one side, away from the first bearing frame, of the second bearing frame;

the multi-stage lifting platform further comprises a transverse adjusting assembly used for driving the lifting assembly to perform lifting movement, and the transverse adjusting assembly is located between the first bearing frame and the second bearing frame.

By adopting the technical scheme, when the bearing lifting mechanism bears the weight to lift, the fork arm lifting mechanism is matched with the bearing lifting mechanism for use, and the fork arm lifting mechanism on the lower layer lifts the weight again; the fork arm lifting mechanism drives the lifting assembly through the transverse adjusting assembly, so that the lifting assembly pushes the second bearing frame to ascend or descend at a space position, the bearing lifting mechanism is pushed to reach the height required to be adjusted, and the problem that the lifting height of the single-stage lifting platform is limited is solved.

Optionally, the lifting assembly includes a first sliding rod and a second sliding rod, and the middle positions of the first sliding rod and the second sliding rod are hinged to each other; the first sliding rod piece and the second sliding rod piece are matched with the first bearing frame in a sliding mode, one ends of the first sliding rod piece and the second sliding rod piece, close to the first bearing frame, are matched with the first bearing frame in a sliding mode, and one ends of the first sliding rod piece and the second sliding rod piece, close to the second bearing frame, are matched with the second bearing frame in a sliding mode.

Through adopting above-mentioned technical scheme, first bear the lower extreme that is located first slip member and second slip member, the second bears the upper end that is located first slip member and second slip member, first slip member is articulated with the middle part position of second slip member, first slip member and the one end that second slip member is close to first bearing frame bear the frame with the second and bear the frame and slide and be connected, first slip member and the one end that second slip member is close to the second bearing frame bear the frame and slide with the second and be connected, thereby make first slip member and second slip member support the second and bear the effect that the frame played the lift, and also play the effect of supporting simultaneously.

Optionally, the transverse adjusting assembly comprises a positive and negative threaded rod, a first driving piece and two groups of driving rods; threads with opposite rotation directions are respectively arranged at two ends of the positive and negative threaded rod, and the positive and negative threaded rod simultaneously penetrates through the two groups of driving rods and is in threaded connection with the two groups of driving rods;

the hinge joint position of the first sliding rod piece and the second sliding rod piece is a lifting hinge joint, and the driving rods are respectively positioned at two sides of the lifting hinge joint; the upper ends of the two groups of driving rods are respectively connected with the first sliding rod piece and the second sliding rod piece in a sliding manner, and the lower ends of the two groups of driving rods are respectively connected with the first sliding rod piece and the second sliding rod piece in a sliding manner;

the first driving piece has a torsional force for driving the positive and negative threaded rods to rotate around the axis of the first driving piece.

Through adopting above-mentioned technical scheme, first driving piece provides power for the rotation of positive and negative threaded rod, so that positive and negative threaded rod rotates around self axis, thereby drive the actuating lever with positive and negative threaded rod both ends threaded connection and draw close each other or keep away from each other, the upper end of actuating lever slides with first slip member and second respectively and is connected, the lower extreme of actuating lever slides with first slip member and second respectively and is connected, first slip member is articulated with second slip member, reach the purpose of adjusting the articulated angle of first slip member and second slip member through the relative motion of actuating lever or keep away from the motion, so that drive elevating system goes up and down.

Optionally, a third sliding chute is arranged on the side surface of the first sliding rod piece, and a fourth sliding chute is arranged on the side surface of the second sliding rod piece; the upper end of the driving rod is provided with a first sliding block, the lower end of the driving rod is provided with a second sliding block, the first sliding block is arranged in the third sliding groove and is in sliding fit with the third sliding groove, and the second sliding block is arranged in the fourth sliding groove and is in sliding fit with the fourth sliding groove.

By adopting the technical scheme, the first sliding block at the upper end of the driving rod is positioned in the third sliding groove arranged on the first sliding rod piece, and the first sliding block moves in the third sliding groove; the second slider of actuating lever lower extreme is located the fourth spout that the second slip member set up, and the second slider moves in the fourth spout, through setting up the slider, has increased the contact surface that the actuating lever produced when sliding connection with first slip member and second slip member, improves the stability of motion.

Optionally, the lifting assembly further comprises a hinge rod, and the hinge rod is simultaneously rotatably connected with the first sliding rod piece and the second sliding rod piece; the fork arm lifting mechanism further comprises a limiting part, the bottom end of the limiting part is fixedly connected with the second bearing frame, a limiting groove is formed in the surface, facing the hinge rod, of the limiting part, and the hinge rod is connected with the limiting groove in a sliding mode.

By adopting the technical scheme, the bottom end of the limiting piece is fixedly connected with the second bearing frame, the side surface facing the hinge rod is provided with the limiting groove for accommodating the hinge rod, the motion track of the hinge rod is limited, and the phenomenon that the center of gravity of the first sliding rod piece and the center of gravity of the second sliding rod piece move in the horizontal direction due to the displacement of the hinge rod in the horizontal direction is avoided, so that the problem of unstable center of gravity of the multi-stage lifting platform is easy to occur, and the adverse effect of inclination of the bearing frame is generated; the first sliding rod piece and the second sliding rod piece are kept to move in the limiting groove in the lifting process, the gravity centers of the first sliding rod piece and the second sliding rod piece only move in the vertical direction through the limiting piece, the bearing frame is always kept in a balanced state on the horizontal plane, and the stability of the multistage lifting platform in the lifting process is improved.

Optionally, the fork arm lifting mechanism may be provided in plurality and vertically stacked.

Through adopting above-mentioned technical scheme, according to the demand yoke elevating system can superpose on vertical direction, when yoke elevating system rose, the superimposed yoke elevating system of bottom also rose, and a plurality of yoke elevating system carry out the promotion of one deck to make this multistage lift platform have more extensive suitability.

Optionally, the bearing lifting mechanism comprises a bearing platform for bearing the automobile and a longitudinal adjusting assembly for driving the bearing platform to lift; the longitudinal adjusting assembly comprises a third driving piece and a one-way screw rod, and the third driving piece is coaxially and fixedly connected with the one-way screw rod; the bearing platform comprises a platform base frame, and the one-way screw rod is in threaded connection with the platform base frame.

Through adopting above-mentioned technical scheme, the third driving piece provides power for the rotation of one-way lead screw to thereby one-way lead screw realizes rotating around self axis and drives the platform bed frame with one-way lead screw threaded connection and can carry out elevating movement, promotes bearing platform from the least significant end to the extreme significant end through vertical adjusting part, perhaps reduces bearing platform from the extreme significant end to the least significant end, with this promotion or the effect that descends that realizes bearing platform.

Optionally, the bearing platform further comprises a second driving element arranged on the platform base frame and a transmission gear driven by the second driving element; one side of the transmission gear, which is far away from the platform base frame, is provided with a platform plate for bearing a heavy object, the bottom of the platform plate is provided with a rack, and the rack is meshed with the transmission gear.

Through adopting above-mentioned technical scheme, second driving piece and drive gear are located between landing slab and the platform bed frame, and the landing slab bottom is provided with the rack, and second driving piece drive gear rotates, because the rack intermeshing of drive gear and landing slab bottom to make drive gear drive the landing slab and carry out the removal of horizontal direction, the heavy object that bears on the landing slab simultaneously also moves forward or backward at the horizontal direction for the platform bed frame, realizes the position transfer of heavy object.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the bearing lifting mechanism bears the weight to lift, the fork arm lifting mechanism is matched with the bearing lifting mechanism for use, and the lower fork arm lifting mechanism pushes the bearing lifting mechanism to lift the weight again; until the weight reaches the height required to be adjusted, thereby improving the problem of limited lifting height of the single-stage lifting platform.

2. First driving piece provides power for the rotation of positive and negative threaded rod, so that positive and negative threaded rod rotates around self axis, thereby drive the actuating lever with positive and negative threaded rod both ends threaded connection and draw close each other or keep away from each other, the upper end of actuating lever slides with first slip member and second respectively and is connected, the lower extreme of actuating lever slides with first slip member and second respectively and is connected, first slip member is articulated with second slip member, the relative motion through the actuating lever perhaps keeps away from the purpose that the motion reaches the articulated angle of regulation first slip member and second slip member, so that drive elevating system goes up and down.

3. A first sliding block wheel at the upper end of the driving rod is positioned in a third sliding groove arranged on the first sliding rod piece, and the first sliding block moves in the third sliding groove; the second slider of actuating lever lower extreme is located the fourth spout that the second slip member set up, and the second slider moves in the fourth spout, through setting up the slider, increases the contact surface when actuating lever and first slip member and second slip member slide and are connected, improves the stability of motion.

4. According to the height requirement, the fork arm lifting mechanisms can be stacked in the vertical direction, when the fork arm lifting mechanisms ascend, the fork arm lifting mechanisms stacked at the bottom layer also ascend, and the plurality of fork arm lifting mechanisms lift one layer of the fork arm lifting mechanisms, so that the multistage lifting platform has wider applicability.

Drawings

Fig. 1 is a schematic view of the overall structure of the present application.

Fig. 2 is a schematic structural view of the fork arm lift mechanism and the load-bearing lift mechanism of the present application.

Fig. 3 is a schematic structural view of the yoke lifting mechanism of the present application.

Fig. 4 is a schematic structural diagram of the load-bearing lifting mechanism of the present application.

Fig. 5 is a schematic structural diagram of the load-bearing platform of the present application.

Description of reference numerals:

1. a yoke lifting mechanism; 11. a first carrier; 111. a first chute; 12. a second carrier; 121. a second chute; 13. a lifting assembly; 131. a first slide bar member; 1311. a third chute; 132. a second slide bar; 1321. a fourth chute; 133. a first driving wheel; 134. a second driving wheel; 136. a hinged lever; 14. a lateral adjustment assembly; 141. a positive and negative threaded rod; 142. a first driving member; 143. a drive rod; 1431. a first slider; 1432. a second slider; 15. a limiting member; 16. a wheel set;

2. a load bearing and lifting mechanism; 21. a mounting wall; 22. a load-bearing platform; 221. a platform plate; 2211. a rack; 222. a platform pedestal; 223. a second driving member; 224. a transmission gear; 23. a longitudinal adjustment assembly; 231. a third driving member; 232. a one-way screw rod.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses multistage lift platform.

Referring to fig. 1, a multi-stage lifting platform includes a bearing lifting mechanism 2 and a yoke lifting mechanism 1 disposed below the bearing lifting mechanism 2, wherein the yoke lifting mechanism 1 may be disposed in a plurality and vertically stacked. In this embodiment, two fork arm lifting mechanisms 1 are vertically stacked. The load-bearing lifting mechanism 2 is used for bearing and lifting a heavy object, and in the embodiment, the heavy object can be a small vehicle such as an automobile. In some other embodiments, the weight may be a building material, construction equipment, medium or large-sized instrument, or other items that need to be transported in the horizontal and vertical directions. The present embodiment will be described in detail with an automobile as the heavy object. Fork arm elevating system 1 is used for lifting bearing elevating system 2, and fork arm elevating system 1 cooperation is born elevating system 2 and is used, bears elevating system 2 and bears the car and go on when going up, and the fork arm elevating system 1 of bottom also rises, and two fork arm elevating system 1 cooperate and carry out the promotion of one deck to make this multistage lift platform have more extensive suitability.

Referring to fig. 2 and 3, the yoke lifting mechanism 1 includes a first carrier 11, a second carrier 12, a lateral adjustment assembly 14, and a lifting assembly 13, the first carrier 11 is located under the second carrier 12, the lifting assembly 13 connects the first carrier 11 with the second carrier 12, and the lateral adjustment assembly 14 is located between the first carrier 11 and the second carrier 12. In the present embodiment, the first loading frame 11 and the second loading frame 12 are disposed in a rectangular parallelepiped shape, and both shapes and sizes are the same. The fork arm lifting mechanism 1 drives the lifting assembly 13 through the transverse adjusting assembly 14, so that the lifting assembly 13 pushes the second loading frame 12 to ascend or descend at a spatial position, and thus pushes the loading lifting mechanism 2 to reach a required height to be adjusted. The lifting assemblies 13 and the lateral adjusting assemblies 14 can be arranged in one group or in multiple groups side by side, in this embodiment, the lifting assemblies 13 and the lateral adjusting assemblies 14 are arranged in two groups and are respectively located at two ends of the first loading frame 11.

Referring to fig. 3, the lifting assembly 13 includes a first slide lever 131, a second slide lever 132, and a hinge lever 136, the first slide lever 131 and the second slide lever 132 being hinged to each other at a middle position, the hinge position being a lifting hinge point, and the hinge lever 136 being located at the lifting hinge point and being rotatably connected to both the first slide lever 131 and the second slide lever 132. In this embodiment, the lifting hinge point is located at the midpoint of each of the first slide link member 131 and the second slide link member 132.

The ends of the first sliding bar 131 and the second sliding bar 132 close to the first bearing frame 11 are slidably engaged with the first bearing frame 11, the ends of the first sliding bar 131 and the second sliding bar 132 close to the second bearing frame 12 are slidably engaged with the second bearing frame 12, and the slidably engaged manner includes a slider, a pulley, and the like. In this embodiment, a sliding fit manner of the pulley is adopted, specifically, a first sliding groove 111 is formed in an end surface of the first bearing frame 11 facing the lifting assembly 13, the length of the first sliding groove 111 is shorter than that of the first bearing frame 11, a second sliding groove 121 is formed in an end surface of the second bearing frame 12 facing the lifting assembly 13, and the second sliding groove 121 is disposed in a fit manner with the first sliding groove 111; the first driving wheel 133 is disposed at one end of the first sliding rod 131 and the second sliding rod 132 slidably engaged with the first bearing frame 11, the first driving wheel 133 is disposed in the first sliding slot 111 and is in rolling engagement with the first sliding slot 111, the second driving wheel 134 is disposed at one end of the first sliding rod 131 and the second sliding rod 132 slidably engaged with the second bearing frame 12, and the second driving wheel 134 is disposed in the second sliding slot 121 and is in rolling engagement with the second sliding slot 121, so that the first sliding rod 131 and the second sliding rod 132 support the second bearing frame 12 to achieve the lifting effect, and the friction force generated when the first sliding rod 131 and the second sliding rod 132 are slidably engaged with each other is reduced by using the rolling engagement, thereby improving the stability of the movement of the bearing frame.

Referring to fig. 3, the lateral adjustment assembly 14 includes a positive and negative threaded rod 141, a first driving member 142, two sets of driving rods 143, and a transmission member for transmitting a driving force; two ends of the positive and negative threaded rod 141 are respectively provided with threads with opposite turning directions, the driving rods 143 are respectively located at two sides of the lifting hinge point, the positive and negative threaded rod 141 simultaneously penetrates through the two sets of driving rods 143 and is in threaded connection with the two sets of driving rods 143, the upper ends of the two sets of driving rods 143 are respectively connected with the first sliding rod member 131 and the second sliding rod member 132 in a sliding manner, and the lower ends of the two sets of driving rods 143 are respectively connected with the first sliding rod member 131 and the second sliding rod member 132 in a sliding manner.

In this embodiment, the driving rod 143 is slidably connected to the first sliding rod 131 and the second sliding rod 132 by a sliding block and sliding slot, specifically, a third sliding slot 1311 is disposed on a side surface of the first sliding rod 131, and a fourth sliding slot 1321 is disposed on a side surface of the second sliding rod 132; the upper end of the driving rod 143 is provided with a first slider 1431, the first slider 1431 is disposed in the third sliding slot 1311 and is in sliding fit with the third sliding slot 1311, the lower end of the driving rod 143 is provided with a second slider 1432, the second slider 1432 is disposed in the fourth sliding slot 1321 and is in sliding fit with the fourth sliding slot 1321, the first slider 1431 moves in the third sliding slot 1311, and the second slider 1432 moves in the fourth sliding slot 1321.

First driving piece 142 is fixed to be set up on first bearing frame 11, first driving piece 142 provides power for the rotation of positive and negative threaded rod 141, the driving medium is used for driving the power transmission that first driving piece 142 produced to positive and negative threaded rod 141, so that positive and negative threaded rod 141 rotates around self axis, thereby drive the actuating lever 143 with positive and negative threaded rod 141 both ends threaded connection and draw close together each other or keep away from each other, reach the mesh of adjusting the articulated angle of first slip member 131 and second slip member 132 through the relative motion of actuating lever 143 or keep away from the motion, so as to lift or reduce second and bear frame 12, reach the purpose that drive elevating system goes up and down. In the present embodiment, the first driving member 142 may use a hydraulic cylinder, a servo motor, an oil cylinder, or the like; the transmission member may be a gear, a coupling, or the like.

The yoke lifting mechanism 1 further comprises a limiting member 15. In the embodiment, the limiting member 15 is substantially rectangular, the bottom end of the limiting member 15 is fixedly connected to the first bearing frame 11, one surface of the limiting member 15 facing the hinge rod 136 is provided with a limiting groove for accommodating the hinge rod 136, and the limiting groove is vertically arranged; the limiting member 15 is used for limiting the motion track of the hinge rod 136, so as to avoid the hinge rod 136 from displacing in the horizontal direction, which causes the center of gravity of the first slide rod 131 and the second slide rod 132 to move in the horizontal direction, and causes the adverse effect of tilting of the bearing frame; the hinge rod 136 is slidably connected to the limiting groove, so that the hinge shaft of the first slide rod 131 and the second slide rod 132 is kept moving in the limiting groove during the lifting process, and thus the center of gravity of the lifting mechanism is only moved in the vertical direction, and the bearing frame can be kept in a balanced state all the time.

The yoke lifting mechanism 1 further comprises a wheel set 16, and the wheel set 16 is detachably mounted on the first carriage 11. In this embodiment, the wheel set 16 includes four rolling wheels, and the rolling wheels are disposed on four corners of the first bearing frame 11 in a one-to-one correspondence, so that the entire multi-stage lifting platform can move in the horizontal direction. In some other embodiments, the wheel sets 16 may be automatically operated as desired or moved according to manual operations.

Referring to fig. 4, the bearing lifting mechanism 2 is fixedly connected with the second bearing frame 12, and the bearing lifting mechanism 2 comprises a mounting wall 21, a longitudinal adjusting assembly 23 and a bearing platform 22; the mounting walls 21 are fixedly connected to the second loading ledge 12, in this embodiment, the mounting walls 21 are substantially rectangular, the number of the mounting walls 21 is two and the mounting walls 21 are arranged oppositely, four longitudinal adjusting assemblies 23 are arranged, and two longitudinal adjusting assemblies 23 are arranged on each mounting wall 21.

The longitudinal adjusting assembly 23 comprises a third driving member 231, a one-way screw rod 232 and a coupling, a longitudinal through groove for accommodating the one-way screw rod 232 is formed in the mounting wall 21, a radial thrust bearing is arranged at the bottom of the through groove, and the one-way screw rod 232 is positioned on the radial thrust bearing and is rotatably connected with the mounting wall 21; the third driving member 231 is coaxially and fixedly connected with the one-way lead screw 232, the third driving member 231 is fixedly connected to the upper end surface of the installation wall 21, the coupler is located between the third driving member 231 and the one-way lead screw 232, the third driving member 231 provides power for the rotation of the one-way lead screw 232, and the coupler transmits the power output by the third driving member 231 to the one-way lead screw 232 so that the one-way lead screw 232 can rotate around the axis of the one-way lead screw 232.

Referring to fig. 5, the loading platform 22 includes a platform plate 221, a platform base frame 222, a second driving member 223, and a transmission gear 224; the platform board 221 is used for carrying a car, and the platform board 221 is located on the platform base frame 222. In this embodiment, the platform board 221 is a rectangular parallelepiped, the platform base frame 222 is a rectangular parallelepiped, and the platform board 221 is slightly smaller than the platform base frame 222 in the length direction and the width direction. The rack 2211 is arranged at the bottom of the platform board 221, the rack 2211 is meshed with the transmission gear 224, the second driving piece 223 and the transmission gear 224 are both arranged on the platform base frame 222, the transmission gear 224 is driven by the second driving piece 223, the second driving piece 223 drives the transmission gear 224, the rack 2211 meshed with the transmission gear 224 moves, the rack 2211 drives the platform board 221 to move forwards or backwards in the horizontal direction, and meanwhile, the heavy object carried on the platform board 221 also moves forwards or backwards in the horizontal direction relative to the platform base frame 222.

One-way lead screw 232 and platform bed frame 222 threaded connection, third driving piece 231 produces drive power and drives the platform bed frame 222 with one-way lead screw 232 threaded connection and carry out elevating movement, lift load-bearing platform 22 to the highest point from the least significant end, perhaps lift load-bearing platform 22 to the bottommost point from the highest point to this realizes the effect to load-bearing platform 22's promotion or decline.

The platform board 221 is provided with a guide board, the guide board is connected with the platform board 221 in a sliding manner, and when the automobile needs to move onto the platform board 221, the guide board can be moved out; specifically, the guide plate is provided with a guide inclined plane used for inclining towards the ground, and the guide inclined plane slows down the vertical height difference between the platform plate 221 and the ground, so that the automobile can conveniently move onto the platform plate 221 from the ground.

The implementation principle of the multistage lifting platform in the embodiment of the application is as follows: the fork arm lifting mechanism 1 for lifting is matched with the bearing lifting mechanism 2 for bearing a heavy object, the platform plate 221 of the bearing lifting mechanism 2 is used for bearing the heavy object, the bearing lifting mechanism 2 drives the one-way screw rod 232 to rotate around the axial direction of the bearing lifting mechanism 2 through the third driving piece 231, the platform base frame 222 in threaded connection with the one-way screw rod 232 is driven to ascend, and therefore the heavy object on the platform plate 221 is driven to ascend in a spatial position; the bearing lifting mechanism 2 is fixedly connected with the yoke lifting mechanism 1 through a second bearing pedestal, the bottom yoke lifting mechanism 1 drives the positive and negative threaded rod 141 to rotate around the axial direction thereof through the first driving piece 142, the driving rods 143 which are in threaded connection with two ends of the positive and negative threaded rod 141 are driven to move in opposite directions, the upper ends of the two groups of driving rods 143 are respectively connected with the first sliding rod 131 and the second sliding rod 132 in a sliding manner, the lower ends of the two groups of driving rods 143 are respectively connected with the first sliding rod 131 and the second sliding rod 132 in a sliding manner, the first sliding rod 131 and the second sliding rod 132 are hinged with each other at the middle positions, one ends of the first sliding rod 131 and the second sliding rod 132 close to the first bearing frame 11 are in sliding fit with the first bearing frame 11, one ends of the first sliding rod 131 and the second sliding rod 132 close to the second bearing frame 12 are in sliding fit with the second bearing frame 12, so that the first slide link 131 and the second slide link 132 support the second loading frame 12 to perform a lifting effect; the fork arm lifting mechanisms 1 are matched to lift the heavy objects layer by layer, and the heavy objects are vertically conveyed to the high altitude from the ground to carry out spatial position conversion.

The above is the preferred embodiment of the present application and is not intended to limit the scope of the present application, wherein like parts are designated by like reference numerals, it should be noted that the words "upper" and "lower" used in the above description refer to directions in the drawings. Therefore, the method comprises the following steps: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A multi-stage lift platform, comprising:

the device comprises a bearing lifting mechanism (2) for bearing a heavy object and a fork arm lifting mechanism (1) for lifting the bearing lifting mechanism (2), wherein the fork arm lifting mechanism (1) is positioned at the lower end of the bearing lifting mechanism (2);

the fork arm lifting mechanism (1) comprises a first bearing frame (11), a lifting assembly (13) is arranged on the first bearing frame (11), a second bearing frame (12) is arranged at one end, away from the first bearing frame (11), of the lifting assembly (13), and the bearing lifting mechanism (2) is installed on one side, away from the first bearing frame (11), of the second bearing frame (12);

the multi-stage lifting platform further comprises a transverse adjusting assembly (14) used for driving the lifting assembly (13) to move up and down, and the transverse adjusting assembly (14) is located between the first loading frame (11) and the second loading frame (12).

2. The multi-stage lifting platform of claim 1, wherein the lifting assembly (13) comprises a first slide rod member (131) and a second slide rod member (132), and the first slide rod member (131) and the second slide rod member (132) are hinged to each other at a middle position; one ends of the first sliding rod piece (131) and the second sliding rod piece (132) close to the first bearing frame (11) are in sliding fit with the first bearing frame (11), and one ends of the first sliding rod piece (131) and the second sliding rod piece (132) close to the second bearing frame (12) are in sliding fit with the second bearing frame (12).

3. The multi-stage lifting platform of claim 2, wherein the lateral adjustment assembly (14) comprises a positive and negative threaded rod (141), a first drive member (142) and two sets of drive rods (143); the two ends of the positive and negative threaded rod (141) are respectively provided with threads with opposite rotating directions, and the positive and negative threaded rod (141) simultaneously penetrates through the two groups of driving rods (143) and is in threaded connection with the two groups of driving rods (143);

the hinge position of the first sliding rod piece (131) and the second sliding rod piece (132) is a lifting hinge point, and the driving rods (143) are respectively positioned at two sides of the lifting hinge point; the upper ends of the two groups of driving rods (143) are respectively connected with the first sliding rod piece (131) and the second sliding rod piece (132) in a sliding manner, and the lower ends of the two groups of driving rods (143) are respectively connected with the first sliding rod piece (131) and the second sliding rod piece (132) in a sliding manner;

the first driving piece (142) has a torsional force for driving the positive and negative threaded rod (141) to rotate around the axis of the first driving piece.

4. A multi-stage lifting platform according to claim 3, wherein the first slide bar member (131) is laterally provided with a third slide slot (1311), and the second slide bar member (132) is laterally provided with a fourth slide slot (1321); the upper end of the driving rod (143) is provided with a first sliding block (1431), the lower end of the driving rod (143) is provided with a second sliding block (1432), the first sliding block (1431) is arranged in the third sliding groove (1311) and is in sliding fit with the third sliding groove (1311), and the second sliding block (1432) is arranged in the fourth sliding groove (1321) and is in sliding fit with the fourth sliding groove (1321).

5. A multi-stage lifting platform according to claim 2, wherein the lifting assembly (13) further comprises a hinge bar (136), the hinge bar (136) being rotationally connected to both the first slide bar (131) and the second slide bar (132); yoke elevating system (1) still includes locating part (15), locating part (15) bottom with the second bears frame (12) fixed connection, locating part (15) towards the spacing groove is seted up to the one side of hinge bar (136), hinge bar (136) with the spacing groove is slided and is connected.

6. A multi-stage lifting platform according to claim 5, wherein the fork arm lifting mechanism (1) is provided in a plurality and vertically stacked.

7. A multi-stage lifting platform according to claim 1, wherein the load-bearing lifting mechanism (2) comprises a load-bearing platform (22) for bearing a car and a longitudinal adjustment assembly (23) for driving the load-bearing platform (22) to lift;

the longitudinal adjusting assembly (23) comprises a third driving piece (231) and a one-way screw rod (232), and the third driving piece (231) is coaxially and fixedly connected with the one-way screw rod (232);

the bearing platform (22) comprises a platform base frame (222), and the one-way screw rod (232) is in threaded connection with the platform base frame (222).

8. The multi-stage lifting platform of claim 7, wherein the carrying platform (22) further comprises a second driving member (223) disposed on the platform base frame (222) and a transmission gear (224) driven by the second driving member (223);

a platform plate (221) is arranged on one side, away from the platform base frame (222), of the transmission gear (224), a rack (2211) is arranged at the bottom of the platform plate (221), and the rack (2211) is meshed with the transmission gear (224).