Continuous lifting device

Abstract

The continuous lifting device comprises a lifting base, sliding grooves are formed in the four sides of the lifting base, two sliding tables are symmetrically arranged in each sliding groove, and two strip holes are symmetrically formed in the four sides of the lifting base; the shear type lifting frames are arranged on the four sides of the lifting base respectively; the driving assembly is arranged in the lifting base and comprises push rods, all the push rods work synchronously and are arranged on the four sides in the lifting base respectively, the number of the push rods on each side is two, connecting rods are installed at the movable ends of the push rods, and the ends, away from the push rods, of the connecting rods penetrate through the strip holes to be movably connected with the sliding table; wherein a rotating shaft is arranged on the connecting rod. The mode that the shear type lifting frames driven in the four directions and the two sides jointly ascend and descend is adopted, the shear type lifting frames are arranged on the four sides of the lifting machine base to share loads, and therefore the burden of the shear type lifting frames is reduced, the size of the shear type lifting frames can be reduced, the shear type lifting frames are installed on the outer side of the lifting machine base, and the size of the shear type lifting frames is effectively reduced.

Description

Technical Field

[0001] The invention relates to the technical field of lifting equipment, and in particular to a continuous lifting device. Background Art

[0002] A continuous lifting device is a mechanical equipment that can perform lifting operations continuously and uninterruptedly within a certain range. Commonly used continuous lifting devices are usually divided into chain lifting, column lifting and scissor lifting. Among them, the continuous lifting device using scissor lifting is widely used in high-altitude operations in the fields of construction, repair, installation and maintenance due to its strong applicability and flexible mobility.

[0003] At present, the commonly used continuous lifting device of scissor lift usually adopts the method of single-side driven double scissor frame to support the lifting of the platform, that is, two scissor frames are symmetrically arranged between the platform and the base, and one side of the two scissor frames is synchronously driven to complete the lifting of the platform. Although this method can achieve the effect of lifting support, due to the use of double scissor frame support, a stronger specification bracket is required to bear the load, resulting in the need for the double scissor frame to be set above the base to obtain stable support, which increases its volume and affects its flexibility, making it easy to be restricted by height and difficult to enter the interior of the building for use. In addition, when the double scissor frame is driven on one side, its support point for the platform is offset, resulting in one side of the platform being unsupported, affecting the maximum load that the device can bear, that is, reducing the maximum load of the device.

[0004] Therefore, the existing continuous lifting device using a single-side driven double scissor frame has difficulty in optimizing the occupied space of the device because the single-side driven double scissor frame has a large load and needs a high-strength bracket to bear it, thereby affecting its flexibility. Summary of the invention

[0005] The object of the present invention is to provide a continuous lifting device to solve the technical problem in the prior art that the single-side driven double scissor frame has a large load and needs a high-strength bracket to bear it, which makes it difficult to optimize the occupied space of the device, thereby affecting its flexibility.

[0006] In order to solve the above technical problems, the present invention specifically provides the following technical solutions:

[0007] A continuous lifting device, comprising:

[0008] An elevator seat, wherein slide grooves are arranged on the four sides of the elevator seat, and two slide platforms are symmetrically arranged in each of the slide grooves, and two strip holes are symmetrically arranged on the four sides of the elevator seat, and the strip holes communicate with the slide grooves and the interior of the elevator seat;

[0009] Scissor-type lifting frames are arranged on four sides of the lifting machine base, and the lower ends of the scissor-type lifting frames are installed on the two slides in the same slide groove;

[0010] A driving assembly is arranged inside the lifting base, and the driving assembly includes push rods, each of which works synchronously and is arranged on four sides inside the lifting base, and each side has two push rods, and a connecting rod is installed at the movable end of the push rod, and the end of the connecting rod away from the push rod passes through the bar hole and is movably connected to the slide table;

[0011] A rotating shaft is provided on the connecting rod, and the rotating shaft is installed inside the lifting machine seat. The distance from the connection between the push rod and the connecting rod to the rotating shaft is greater than the connection between the connecting rod and the slide, so that when the push rod lever on the same side pushes the two slides to move closer to or away from each other, the scissor lift is raised or lowered.

[0012] As a preferred solution of the present invention, a long sliding opening and a short sliding opening are respectively provided at both ends of the connecting rod, the long sliding opening is close to the push rod, and the short sliding opening is close to the slide table;

[0013] A first slide post is arranged on the slide platform, and the first slide post is slidably assembled with the short slide port; a second slide post is arranged at the end of the push rod, and the second slide post is slidably assembled with the long slide port;

[0014] After the push rod drives the connecting rod to rotate through the second sliding column, the connecting rod drives the slide table to slide in the sliding groove through the first sliding column to control the lifting of the scissor lift.

[0015] As a preferred solution of the present invention, the push rod includes a sleeve and a rod, the rod is slidably inserted into the sleeve, the second sliding column is fixed to the end of the rod, and a notch is opened on the side wall of the sleeve, and the notch is parallel to the axis of the sleeve;

[0016] A tooth groove is provided on the outer surface of the rod, the tooth groove is parallel to the axis of the rod, and the tooth groove and the notch are located on the same side and at the same height, so that part of the tooth groove is exposed at the notch;

[0017] Among them, the driving component also includes multiple gear assemblies and motors. The motors synchronously drive the multiple gear assemblies to rotate through the transmission components. The multiple gear assemblies are distributed on the four sides inside the elevator seat, and each side has two. The gear assemblies are installed in cooperation with the tooth grooves through the corresponding notches.

[0018] As a preferred solution of the present invention, the gear assembly comprises a pinion and a large gear, and the pinion is meshed and installed with the large gear;

[0019] Part of the large gear is placed in the notch and meshes with the tooth groove, and the small gear is connected to the transmission assembly to increase the output torque of the gear assembly.

[0020] As a preferred solution of the present invention, the transmission assembly includes a steering box, the steering box has an input shaft and four output shafts, and the four output shafts are located on the same plane, the input shaft is perpendicular to the four output shafts, and the input shaft of the steering box is connected to the shaft of the motor;

[0021] A worm is arranged at the end of the output shaft of the steering box, a worm wheel is arranged on the shaft of each pinion, and the worm is placed between the two worm wheels on the same side and meshes with each other for transmission.

[0022] As a preferred solution of the present invention, an extension shaft is provided between the worm and the output shaft of the steering box;

[0023] An extension rod is provided between the rod and the second sliding column;

[0024] Wherein, the extended length of the extended axis is equal to the extended length of the extended rod parallel to the extended axis.

[0025] As a preferred solution of the present invention, the scissor lift comprises two end brackets and a plurality of intermediate brackets, the plurality of intermediate brackets are connected in sequence, and the two end brackets are respectively mounted on the intermediate bracket of the lowest layer and the intermediate bracket of the uppermost layer;

[0026] The end bracket comprises two end support rods, the two end support rods are crossed and rotatably connected through an end pin, and the distance between one end of the end support rod close to the middle bracket and the end pin is smaller than the distance between one end of the end support rod far from the middle bracket and the end pin;

[0027] The intermediate bracket includes two intermediate support rods, which are crossed and rotatably connected through an intermediate pin shaft, and the distances between the two ends of the intermediate support rod and the intermediate pin shaft are equal.

[0028] As a preferred solution of the present invention, guide grooves are arranged on four sides of the lift seat, and the end of the end pin shaft located at a lower position is slidably installed in the guide groove.

[0029] As a preferred solution of the present invention, a right-angle frame is commonly installed on two adjacent intermediate brackets, and two ends of the right-angle frame are respectively installed on the two intermediate pins of the two adjacent intermediate brackets.

[0030] As a preferred solution of the present invention, a workbench is commonly installed on the upper end of each of the scissor lifts, and the workbench is located directly above the lift seat;

[0031] Among them, two support blocks are symmetrically arranged on the four sides of the bottom of the workbench, and the support blocks are slidably installed at the bottom of the workbench. The end of the end support rod located on the upper layer away from the middle bracket is movably installed on the support block on the corresponding side.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] The present invention adopts a four-way double-sided driven scissor lift frame for joint lifting, and scissor lift frames are arranged on the four sides of the lift base to share the load, thereby reducing the burden of each scissor lift frame, enabling it to be reduced in size and installed outside the lift base, effectively reducing its size.

[0034] Furthermore, by arranging a driving assembly consisting of eight push rods and connecting rods in the lifting base, the push rods work synchronously and drive the scissor lifts to be lifted and lowered on both sides in the manner of a labor-saving lever, so that each scissor lift always maintains a central support, effectively improving the stability of the device and the effective maximum load of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0036] Figure 1 A schematic structural diagram of a continuous lifting device provided in an embodiment of the present invention;

[0037] Figure 2 A schematic diagram of the structure of a driving component portion of a continuous lifting device provided by an embodiment of the present invention;

[0038] Figure 3 A schematic diagram of the structure of a gear assembly portion of a continuous lifting device provided by an embodiment of the present invention;

[0039] Figure 4 A schematic diagram of the structure of the push rod portion of the continuous lifting device provided by an embodiment of the present invention;

[0040] Figure 5 A schematic structural diagram of the right-angle frame portion of the continuous lifting device provided in an embodiment of the present invention.

[0041] The numbers in the figure represent the following:

[0042] 1-lifting base; 2-scissor lift frame; 3-driving assembly; 4-working table;

[0043] 11-slideway; 12-bar hole; 13-guide channel; 21-end bracket; 22-middle bracket; 31-push rod; 32-connecting rod; 33-gear assembly; 34-transmission assembly; 41-support block

[0044] 111-slideway; 112-first slide post; 211-end support rod; 212-end pin; 221-middle support rod; 222-middle pin; 223-right angle frame; 311-sleeve; 312-rod; 313-slot; 314-tooth groove; 315-second slide post; 316-extension rod; 321-rotating shaft; 322-long slide; 323-short slide; 331-small gear; 332-large gear; 341-steering box; 342-worm; 343-worm wheel; 344-extension shaft. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] like Figure 1 , Figure 2 As shown, the present invention provides a continuous lifting device, comprising:

[0047] The lift seat 1 has slide grooves 11 on four sides thereof, and two slide platforms 111 are symmetrically arranged in each slide groove 11, and two strip holes 12 are symmetrically arranged on four sides of the lift seat 1, and the strip holes 12 communicate with the slide grooves 11 and the interior of the lift seat 1;

[0048] The scissor-type lifting frames 2 are arranged on four sides of the lifting machine base 1 , and the lower ends of the scissor-type lifting frames 2 are installed on two slides 111 in the same slide groove 11 .

[0049] The continuous lifting device of the present invention adopts four scissor-type lifting frames 2 which are arranged on four sides of the lifting machine base 1 to evenly distribute the bearing capacity, thereby achieving the same load as that of a single lifting frame while reducing the burden of each scissor-type lifting frame 2, thereby reducing the material thickness of each scissor-type lifting frame 2, effectively reducing the folded volume of the scissor-type lifting frame 2, and thus reducing the overall volume of the lifting device.

[0050] And because the load of each scissor-type lifting frame 2 is reduced, the scissor-type lifting frame 2 can be stably installed on the outer wall of the lifting base 1. Compared with the lifting frame installed on the top of the lifting base 1, its volume can be further reduced and its flexibility can be improved.

[0051] Of course, since the four scissor lifts 2 are installed outside the lift base 1, and when working, the four scissor lifts 2 need to be lifted synchronously, therefore, the continuous lifting device also includes:

[0052] The driving assembly 3 is arranged inside the lifting base 1. The driving assembly 3 includes push rods 31. The push rods 31 work synchronously and are arranged on four sides inside the lifting base 1, and each side has two push rods. The movable end of the push rod 3 is installed with a connecting rod 32. The end of the connecting rod 32 away from the push rod 3 passes through the bar hole 12 and is movably connected to the slide 111.

[0053] A rotating shaft 321 is provided on the connecting rod 32, and the rotating shaft 321 is installed inside the lifting machine base 1, and the distance from the connection between the push rod 31 and the connecting rod 32 to the rotating shaft 321 is greater than the connection between the connecting rod 32 and the slide 111, so that when the push rod 31 lever on the same side pushes the two slides 111 to move closer to or away from each other, the scissor lift 2 is raised or lowered.

[0054] The continuous lifting device of the present invention utilizes multiple push rods 31 to synchronously push multiple connecting rods 32, and the other end of the connecting rod 32 is connected to the slide 111, and the connecting rod 32 forms a lever through the rotating shaft 321, so that the push rod 31 drives the slide 111 to move in the manner of a labor-saving lever, and the two slides 111 on the same side are moved symmetrically, so as to realize symmetrical driving of the scissor lift 2 to rise or fall, so that the scissor lift 2 always remains centered, thereby improving the stability of the support.

[0055] Compared with the existing scissor-type continuous lifting device that uses a centrally unilaterally active scissor-type lifting device, the continuous lifting device of this embodiment adopts a four-way double-sided driven scissor-type lifting frame for joint lifting, and uses four scissor-type lifting frames 2 arranged on the four sides of the lifting base 1 to share the load, thereby lightweighting the scissor-type lifting frame 2 to ensure that it can be retracted to a smaller volume. Moreover, since the maximum load of each scissor-type lifting frame 2 is reduced, it can be firmly installed on the side wall of the lifting base 1, thereby further reducing the spatial volume and improving its flexibility after full retraction.

[0056] Since the push rod 31 drives the connecting rod 32 to rotate, the distance between the push rod 31 and the rotating shaft 321 changes, and the distance between the rotating shaft 321 and the slide 111 also changes. In order to ensure that the push rod 31 can normally push the connecting rod 32 and the connecting rod 32 can rotate and push the slide 111, the following preferred embodiment is provided.

[0057] like Figure 2 , Figure 3As shown, a long sliding opening 322 and a short sliding opening 323 are respectively provided at both ends of the connecting rod 32, the long sliding opening 322 is close to the push rod 31, and the short sliding opening 323 is close to the slide table 111;

[0058] A first slide post 112 is disposed on the slide table 111, and the first slide post 112 is slidably assembled with the short slide opening 323. A second slide post 315 is disposed at the end of the push rod 31, and the second slide post 315 is slidably assembled with the long slide opening 322.

[0059] After the push rod 31 drives the connecting rod 32 to rotate through the second sliding column 315 , the connecting rod 32 drives the slide 111 to slide in the slide slot 11 through the first sliding column 112 to control the lifting of the scissor lift 2 .

[0060] Specifically, a long slide 322 and a short slide 323 are provided at both ends of the connecting rod 32, and a second slide column 315 is provided at the end of the push rod 31 to be assembled with the long slide 322, and a first slide column 112 is provided on the slide 111 to be assembled with the short slide 323. When the push rod 31 drives the connecting rod 32 to rotate, the second slide column 315 can slide in the long slide 322, and when the connecting rod 32 drives the slide 111 to slide, the first slide column 112 slides in the short slide 323 to adapt to the distance change.

[0061] The push rod 31 may be any component that can be pushed and returned linearly, such as a hydraulic push rod, an electric push rod, etc.

[0062] Of course, if the push rods 31 are driven by hydraulic or electric means, it is necessary to synchronously control eight push rods 31 to make them work synchronously, and then a corresponding controller is required to distribute the driving force, which is costly and difficult to control. Therefore, the following preferred embodiments are provided.

[0063] like Figure 2-4 As shown, the push rod 31 includes a sleeve 311 and a rod 312. The rod 312 is slidably inserted into the sleeve 311. The second sliding column 315 is fixed to the end of the rod 312. A notch 313 is opened on the side wall of the sleeve 311. The notch 313 is parallel to the axis of the sleeve 311.

[0064] A tooth groove 314 is formed on the outer surface of the rod 312. The tooth groove 314 is parallel to the axis of the rod 312. The tooth groove 314 and the notch 313 are located on the same side and at the same height, so that part of the tooth groove 314 is exposed at the notch 313.

[0065] Among them, the driving component 3 also includes multiple gear components 33 and a motor. The motor synchronously drives the multiple gear components 33 to rotate through the transmission component 34. The multiple gear components 33 are distributed on the four sides inside the elevator base 1, and each side has two. The gear components 33 are installed in cooperation with the tooth grooves 314 through the corresponding slots 313.

[0066] Specifically, the push rod 31 is composed of a sleeve 311 and a rod 312 that are slidably assembled. By setting a tooth groove 314 on the rod 312 and a notch 313 on the sleeve 311, part of the tooth groove 314 can be exposed through the notch 313, so that the gear assembly 33 is arranged to engage the tooth groove 314 through the notch 313. When the motor synchronously drives multiple gear assemblies 33, eight push rods 31 can be synchronously driven to work, and only one motor needs to be controlled.

[0067] Based on the above embodiment, the gear assembly 33 is used to drive the rod 312 to move in the sleeve 311. A preferred embodiment of the gear assembly 33 is provided below.

[0068] like Figure 3 As shown, the gear assembly 33 includes a small gear 331 and a large gear 332, and the small gear 331 is meshed and installed with the large gear 332;

[0069] Part of the large gear 332 is placed in the notch 313 and meshes with the tooth groove 314 , and the small gear 331 is connected to the transmission assembly 34 to increase the output torque of the gear assembly 33 .

[0070] Specifically, the gear assembly 33 is a combination of a small gear 331 and a large gear 332 , wherein the large gear 332 is meshed with the tooth groove 314 , thereby increasing the output torque of the gear assembly 33 and improving its driving force.

[0071] Of course, the transmission assembly 34 needs to synchronously drive each gear assembly 33 so that one motor can synchronously drive multiple rods 312 to move. Based on this, the following preferred embodiments are provided.

[0072] like Figure 3 As shown, the transmission assembly 34 includes a steering box 341, which has an input shaft and four output shafts, and the four output shafts are located on the same plane, the input shaft is perpendicular to the four output shafts, and the input shaft of the steering box 341 is connected to the shaft of the motor;

[0073] A worm 342 is disposed at the end of the output shaft of the steering box 341 , a worm wheel 343 is disposed on the shaft of each pinion 321 , and the worm 342 is placed between two worm wheels 343 on the same side and meshes with each other for transmission.

[0074] Specifically, the transmission assembly 34 adopts a steering box 341 to evenly distribute the driving force, a worm 342 is arranged on the output shaft of the transmission box 34, and a worm wheel 343 is arranged on the shaft of the pinion 321, and each worm 342 cooperates with the two worm wheels 343 on the same side to form a single-worm and double-worm wheel structure, thereby realizing symmetrical driving of the two gear assemblies 33, that is, it can symmetrically drive the two rods 312 to move, thereby realizing bidirectional driving of the scissor lift 2 to reduce the load on one side.

[0075] It should be noted that in the above embodiment, the lift base 1 is a square structure, so that each scissor lift frame 2 can be raised and lowered synchronously. Of course, in order to achieve the purpose of synchronously driving multiple push rods 31 with one motor, the motor should be distributed in the middle area of ​​the lift base 1, but it is far away from the gear assemblies 33 on the four sides. In order to solve this problem, the following preferred embodiments are provided.

[0076] like Figure 2-4 As shown, an extension shaft 344 is provided between the worm 342 and the output shaft of the steering box 341;

[0077] An extension rod 316 is provided between the rod 312 and the second sliding column 315;

[0078] The extended length of the extended shaft 344 is equal to the extended length of the extended rod 316 parallel to the extended shaft 344 .

[0079] Specifically, by using the extension shaft 344, the extension shaft 344 is installed between the steering box 341 and the worm 342, and the extension shaft 344 is rotatably installed inside the elevator seat 1, thereby ensuring that the steering box 341 is centered and the worm 342 can be remotely controlled to rotate.

[0080] Of course, for a scissor lift 2 with a large stroke, an extension rod 316 can be used as a connecting member between the second slide column 315 and the rod 312 to extend the connection length of the rod 312. And because the two pinions 321 are driven by the worm 342 and the worm wheel 343, the two pinions 342 can be installed in a staggered manner, thereby further increasing the assembly length of the rod 312 and the sleeve 311 to obtain a larger driving stroke.

[0081] Based on the above embodiments, a preferred embodiment of a scissor lift 2 is provided below.

[0082] like Figure 1 , Figure 5 As shown, the scissor lift 2 includes two end brackets 21 and a plurality of intermediate brackets 22, the plurality of intermediate brackets 22 are connected in sequence, and the two end brackets 21 are respectively mounted on the lowest intermediate bracket 22 and the uppermost intermediate bracket 22;

[0083] The end bracket 21 includes two end support rods 211, which are crossed and rotatably connected through an end pin 212, and the distance between one end of the end support rod 211 close to the middle bracket 22 and the end pin 212 is smaller than the distance between one end of the end support rod 211 away from the middle bracket 22 and the end pin 212;

[0084] The middle bracket 22 includes two middle support rods 221 , which are crossed and rotatably connected through a middle pin shaft 222 , and the distances between the two ends of the middle support rod 22 and the middle pin shaft 222 are equal.

[0085] Specifically, the scissor-type lifting frame 2 is composed of two different brackets, an end bracket 21 and an intermediate bracket 22. The end support rods 211 of the end bracket 21 are connected by the end pin 212 to form a labor-saving lever, and the middle support rods 221 of the intermediate bracket 22 are connected by the middle pin 222 to form a conventional lever. The short arm of the end support rod 211 and the arm length of the middle support rod 221 are equal, so that they form a parallelogram to achieve scissor-type lifting.

[0086] Among them, the end bracket 21 located at the lower layer forms a labor-saving lever, and the end bracket 21 located at the upper layer is opposite to the end bracket 21 of the lower layer. Therefore, during the scissor-type lifting process, the spacing formed by the end support rods 211 of the upper layer is larger, thereby effectively improving its supporting surface and improving the supporting stability of the scissor-type lifting frame 2.

[0087] Since the end support rod 211 of the lower layer end bracket 21 is longer, the center of gravity is slightly higher, which causes stability problems. Based on this, the following preferred embodiments are provided.

[0088] like Figure 1 , Figure 5 As shown, guide grooves 13 are provided on the four sides of the lift seat 1 , and the ends of the end pin shafts 212 located at the lower position are slidably installed in the guide grooves 13 .

[0089] Specifically, by providing a guide groove 13 on the outer wall of the elevator base 1 and installing the end pin 212 in the guide groove 13, the end pin 212 can be only moved up and down, so that the end support rod 211 can move symmetrically, that is, the two slides 111 slide symmetrically, and the axial movement of the end pin 212 can be limited, thereby improving its stability.

[0090] Of course, if Figure 5 As shown, a right angle frame 223 is commonly installed on two adjacent intermediate brackets 22 , and two ends of the right angle frame 223 are respectively installed on two intermediate pin shafts 222 of the two adjacent intermediate brackets 22 .

[0091] Specifically, the middle pin shaft 222 of two adjacent middle brackets 22 is fixedly connected by the right-angle bracket 223, so that the two adjacent middle brackets 22 can maintain synchronous lifting and lowering, and the four middle brackets 22 form a frame body through the right-angle bracket 223, thereby enhancing its lateral supporting force and improving stability after lifting to a high position.

[0092] In addition, if Figure 1 , Figure 5As shown, a workbench 4 is commonly installed at the upper end of each scissor lift 2, and the workbench 4 is located directly above the lift base 1;

[0093] Among them, two support blocks 41 are symmetrically arranged on the four sides of the bottom of the workbench 4. The support blocks 41 are slidably installed at the bottom of the workbench 4, and the end of the end support rod 211 located on the upper layer away from the middle bracket 22 is movably installed on the support block 41 on the corresponding side.

[0094] Specifically, the workbench 4 is supported by four scissor-type lifts 2, and the end support rods 211 of the four scissor-type lifts 2 support the workbench 4 through the support blocks 41, and the support blocks 41 can move at the bottom of the workbench 4. During the lifting and lowering process of the scissor-type lifts 2, the support blocks 41 move to always maintain central support.

[0095] The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and protection scope of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present application.

Claims

1. A continuous lifting device, characterized in that: include: An elevator seat (1), wherein four sides of the elevator seat (1) are provided with slide grooves (11), and two slide platforms (111) are symmetrically arranged in each of the slide grooves (11), and two strip holes (12) are symmetrically arranged on the four sides of the elevator seat (1), and the strip holes (12) are connected to the slide grooves (11) and the interior of the elevator seat (1); The scissor-type lifting frame (2) is arranged on four sides of the lifting machine base (1), and the lower end of the scissor-type lifting frame (2) is installed on two slides (111) in the same slide groove (11); A driving assembly (3) is arranged inside the lifting base (1), and the driving assembly (3) includes push rods (31). The push rods (31) work synchronously and are arranged on four sides inside the lifting base (1), and each side has two push rods. A connecting rod (32) is installed at the movable end of the push rod (3). The end of the connecting rod (32) away from the push rod (3) passes through the bar hole (12) and is movably connected to the slide table (111); A rotating shaft (321) is provided on the connecting rod (32), and the rotating shaft (321) is installed inside the lifting machine base (1), and the distance from the connection point between the push rod (31) and the connecting rod (32) to the rotating shaft (321) is greater than the connection point between the connecting rod (32) and the slide (111), so that when the push rod (31) lever on the same side pushes the two slides (111) to move closer to or away from each other, the scissor lift (2) is raised or lowered.

2. A continuous lifting device according to claim 1, characterized in that: A long sliding opening (322) and a short sliding opening (323) are respectively provided at both ends of the connecting rod (32), wherein the long sliding opening (322) is close to the push rod (31), and the short sliding opening (323) is close to the sliding platform (111); A first sliding column (112) is arranged on the slide table (111), and the first sliding column (112) is slidably assembled with the short sliding opening (323); a second sliding column (315) is arranged at the end of the push rod (31), and the second sliding column (315) is slidably assembled with the long sliding opening (322); After the push rod (31) drives the connecting rod (32) to rotate via the second sliding column (315), the connecting rod (32) drives the slide (111) to slide in the slide groove (11) via the first sliding column (112) to control the lifting and lowering of the scissor lift (2).

3. A continuous lifting device according to claim 2, characterized in that: The push rod (31) comprises a sleeve (311) and a rod (312), wherein the rod (312) is slidably inserted into the sleeve (311), the second sliding column (315) is fixed to the end of the rod (312), and a notch (313) is provided on the side wall of the sleeve (311), wherein the notch (313) is parallel to the axis of the sleeve (311); A tooth groove (314) is provided on the outer surface of the rod (312), the tooth groove (314) is parallel to the axis of the rod (312), and the tooth groove (314) and the notch (313) are located on the same side and at the same height, so that part of the tooth groove (314) is exposed at the notch (313); The driving assembly (3) further comprises a plurality of gear assemblies (33) and a motor, wherein the motor synchronously drives the plurality of gear assemblies (33) to rotate via a transmission assembly (34), the plurality of gear assemblies (33) are distributed on four sides inside the lifting base (1), and each side has two gear assemblies, and the gear assemblies (33) are installed in cooperation with the tooth grooves (314) via the corresponding notches (313).

4. A continuous lifting device according to claim 3, characterized in that: The gear assembly (33) comprises a pinion (331) and a large gear (332), wherein the pinion (331) is meshedly mounted with the large gear (332); Part of the large gear (332) is placed in the notch (313) and meshes with the tooth groove (314), and the small gear (331) is connected to the transmission assembly (34) to increase the output torque of the gear assembly (33).

5. A continuous lifting device according to claim 4, characterized in that: The transmission assembly (34) comprises a steering box (341), wherein the steering box (341) has an input shaft and four output shafts, wherein the four output shafts are located on the same plane, the input shaft is perpendicular to the four output shafts, and the input shaft of the steering box (341) is connected to the shaft of the motor; A worm (342) is arranged at the end of the output shaft of the steering box (341), a worm wheel (343) is arranged on the shaft of each pinion (321), and the worm (342) is placed between two worm wheels (343) on the same side and meshes with each other for transmission.

6. A continuous lifting device according to claim 5, characterized in that: An extension shaft (344) is provided between the worm (342) and the output shaft of the steering box (341); An extension rod (316) is provided between the rod (312) and the second sliding column (315); The extension length of the extension axis (344) is equal to the extension length of the extension rod (316) parallel to the extension axis (344).

7. A continuous lifting device according to any one of claims 1 to 5, characterized in that: The scissor lift (2) comprises two end brackets (21) and a plurality of intermediate brackets (22), wherein the plurality of intermediate brackets (22) are connected in sequence, and the two end brackets (21) are respectively mounted on the intermediate bracket (22) at the bottom layer and the intermediate bracket (22) at the top layer; The end bracket (21) comprises two end support rods (211), the two end support rods (211) are crossed and rotatably connected via an end pin (212), and the distance between one end of the end support rod (211) close to the middle bracket (22) and the end pin (212) is smaller than the distance between one end of the end support rod (211) far from the middle bracket (22) and the end pin (212); The intermediate support (22) comprises two intermediate support rods (221), the two intermediate support rods (221) are crossed and rotatably connected via an intermediate pin shaft (222), and the distances between the two ends of the intermediate support rod (22) and the intermediate pin shaft (222) are equal.

8. A continuous lifting device according to claim 7, characterized in that: Guide grooves (13) are arranged on four sides of the elevator seat (1), and the end of the end pin shaft (212) located at a low position is slidably installed in the guide groove (13).

9. A continuous lifting device according to claim 8, characterized in that: A right-angle frame (223) is commonly mounted on two adjacent intermediate brackets (22), and two ends of the right-angle frame (223) are respectively mounted on the two intermediate pins (222) of the two adjacent intermediate brackets (22).

10. A continuous lifting device according to claim 7, characterized in that: A workbench (4) is commonly installed at the upper end of each of the scissor-type lifting frames (2), and the workbench (4) is located directly above the lifting machine base (1); Two support blocks (41) are symmetrically arranged on four sides of the bottom of the workbench (4), and the support blocks (41) are slidably installed on the bottom of the workbench (4), and one end of the end support rod (211) located on the upper layer away from the middle bracket (22) is movably installed on the support block (41) on the corresponding side.

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