A lifting device

Abstract

The present invention discloses a lifting device, including a main lifting device and an auxiliary lifting device, wherein the main lifting device includes a support assembly, a lifting assembly, and a first drive assembly; the lifting assembly includes a plurality of lifting arms, and a plurality of chain assemblies; when the first drive assembly drives a lifting arm adjacent to the support assembly to move upward, the remaining lifting arms are synchronously unfolded under the action of the plurality of chain assemblies; the auxiliary lifting device includes an auxiliary lifting arm, a work platform, and a second drive assembly; the lower end of the auxiliary lifting arm is connected to one end of a chain in an adjacent chain assembly. The lifting device adopting the above-mentioned structural design, under the action of the first drive assembly, drives the plurality of lifting arms in the lifting assembly to be synchronously unfolded, and then drives the auxiliary lifting device to rise or fall, and can also adjust the position of the work platform through the auxiliary lifting device, so that the work platform changes its position relative to the lifting assembly, thereby meeting various construction requirements.

Description

Technical Field

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

[0002] Most of the work platforms used for lifting mechanisms in the prior art are fastened to the lifting arms at the uppermost end of the lifting mechanisms, and can only change the construction position of the work platforms as the lifting mechanisms rise and fall, but cannot adjust the construction position of the work platforms relative to the lifting mechanisms, which in turn brings certain limitations to the construction of the work platforms. Summary of the invention

[0003] The purpose of the present invention is to provide a lifting device, which can not only conveniently realize the lifting and lowering of the working platform through the main lifting device, but also can adjust the position of the working platform relative to the main lifting device through the setting of the auxiliary lifting device, thereby meeting various construction needs.

[0004] To achieve this object, the present invention adopts the following technical solutions:

[0005] A lifting device, comprising:

[0006] The main lifting device comprises a support assembly mounted on the mounting platform, a lifting assembly slidably matched with the support assembly, and a first driving assembly for driving the lifting assembly to move back and forth along the height direction of the support assembly; the lifting assembly comprises a plurality of lifting arms slidably matched in sequence, and a plurality of chain assemblies arranged on the top of the plurality of lifting arms; when the first driving assembly drives one of the lifting arms adjacent to the support assembly to move upward, the remaining lifting arms are respectively deployed synchronously under the action of the plurality of chain assemblies;

[0007] A secondary lifting device, the secondary lifting device includes a secondary lifting arm that slides with the adjacent lifting arm, a working platform that slides with the secondary lifting arm, and a second driving component for driving the working platform to slide back and forth along the length direction of the secondary lifting arm; the lower end of the secondary lifting arm is connected to one end of the chain in the adjacent chain component.

[0008] Among them, the support assembly includes a support arm vertically fastened to the mounting platform, bearing seats mounted at both ends of the support arm, a screw rod arranged between the two bearing seats, a guide rod arranged on both sides of the screw rod, and a drive block threadedly connected to the screw rod and arranged to slide back and forth along the length direction of the guide rod.

[0009] Wherein, the first driving assembly includes a first motor arranged at the lower end of the support arm, and a first reducer connected to the first motor, and the first reducer is connected to one end of the screw rod.

[0010] The lifting arm includes a first lifting arm, a second lifting arm slidably arranged along the length direction of the first lifting arm, and a third lifting arm slidably arranged along the length direction of the second lifting arm.

[0011] Wherein, the chain assembly includes a first chain assembly pivotally connected to the first lifting arm, a second chain assembly pivotally connected to the second lifting arm, and a third chain assembly pivotally connected to the third lifting arm.

[0012] Among them, the first chain assembly includes a first sprocket assembly arranged on the top of the first lifting arm, and a first chain meshed with the first sprocket; the second chain assembly includes a second sprocket assembly arranged on the top of the second lifting arm, and a second chain meshed with the second sprocket; the third chain assembly includes a third sprocket assembly arranged on the top of the third lifting arm, and a third chain meshed with the third sprocket.

[0013] Among them, the lower bottom surface of the first lifting arm is fastened to the driving block; one end of the first chain is fastened to the supporting arm, and the other end of the first chain is fastened to the lower bottom surface of the second lifting arm; one end of the second chain is fastened to the first lifting arm, and the other end of the second chain is fastened to the lower bottom surface of the third lifting arm; one end of the third chain is fastened to the second lifting arm, and the other end of the third chain is fastened to the lower bottom surface of the auxiliary lifting arm.

[0014] Wherein, the first sprocket assembly, the second sprocket assembly and the third sprocket assembly all include a fixed shaft and a sprocket coaxially rotatably connected to the fixed shaft.

[0015] Among them, the second driving component includes a second motor arranged at the lower end of the auxiliary lifting arm, a driven wheel pivotally connected to the upper end of the auxiliary lifting arm, a synchronous belt arranged between the second motor and the driven wheel, and the working platform slidably arranged along the length direction of the auxiliary lifting arm and fastened to the synchronous belt.

[0016] Wherein, the mounting platform is configured as a traction transport vehicle, which includes a vehicle body, a support mechanism arranged on the periphery of the vehicle body, a plurality of sensors arranged on the vehicle body for detecting the balance of the vehicle body, and an electric control device electrically connected to the plurality of sensors for controlling the retraction, extension and lifting of the support mechanism.

[0017] Beneficial effects of the present invention: The present invention provides a lifting device, including a main lifting device and an auxiliary lifting device, the main lifting device including a support assembly mounted on a mounting platform, a lifting assembly slidably matched with the support assembly, and a first driving assembly for driving the lifting assembly to move back and forth along the height direction of the support assembly; the lifting assembly includes a plurality of lifting arms slidably matched in sequence, and a plurality of chain assemblies arranged on the tops of the plurality of lifting arms; when the first driving assembly drives a lifting arm adjacent to the support assembly to move upward, the remaining lifting arms are synchronously unfolded under the action of the plurality of chain assemblies respectively; the auxiliary lifting device includes an auxiliary lifting arm slidably matched with the adjacent lifting arm, a working platform slidably matched with the auxiliary lifting arm, and a second driving assembly for driving the working platform to slide back and forth along the length direction of the auxiliary lifting arm; the lower end of the auxiliary lifting arm is connected to one end of a chain in the adjacent chain assembly. The lifting device adopting the above-mentioned structural design, under the action of the first driving component, drives the multiple lifting arms in the lifting assembly to unfold synchronously, and then drives the auxiliary lifting device to rise or fall. At the same time, the position of the working platform can be adjusted through the auxiliary lifting device, so that the position of the working platform can be changed relative to the lifting assembly, thereby meeting various construction needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an axonometric diagram of a lifting device of the present invention.

[0019] Figure 2 yes Figure 1 Axonometric view of the middle support arm, the first lifting arm and the second support arm in the semi-expanded state.

[0020] Figure 3 yes Figure 2 A partial enlarged view of point A in the middle.

[0021] Figure 4 yes Figure 1 Axonometric view of the center support assembly.

[0022] Figure 5 yes Figure 1 Schematic diagram of the structure after the middle lifting device is unfolded.

[0023] Figure 6 yes Figure 1 Schematic diagram of the structure after the middle lifting device is folded. DETAILED DESCRIPTION

[0024] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0025] Combination Figures 1 to 6As shown, this embodiment provides a lifting device, including a main lifting device 1 and an auxiliary lifting device 2. Specifically, the main lifting device 1 includes a support assembly 11 mounted on a mounting platform, a lifting assembly 12 slidably matched with the support assembly 11, and a first driving assembly 13 for driving the lifting assembly 12 to move back and forth along the height direction of the support assembly 11; the lifting assembly 12 includes a plurality of lifting arms slidably matched in sequence, and a plurality of chain assemblies for synchronously unfolding or sequentially retracting adjacent lifting arms, and one end of the chain assembly adjacent to the support assembly 11 is fastened to the support assembly 11.

[0026] Preferably, the multiple chain assemblies in this embodiment are respectively installed on the top of multiple lifting arms, and the two ends of the chain in the chain assembly are respectively connected to the lifting arms on both sides, or the lifting arms and the support assembly 11, so that when the first driving assembly drives a lifting arm adjacent to the support assembly to move upward, the remaining lifting arms are synchronously unfolded under the action of the multiple chain assemblies.

[0027] To be more specific, the support assembly 11 in this embodiment includes a support arm 111 vertically fastened to the mounting platform, bearing seats 112 mounted at both ends of the support arm 111, a screw rod 113 disposed between the two bearing seats 112, a guide rod 114 disposed on both sides of the screw rod 113, and a driving block 115 threadedly connected to the screw rod 113 and slidably disposed along the length direction of the guide rod 114, so that the driving block 115 is driven to move back and forth along the length direction of the screw rod 113 through the rotation of the screw rod 113.

[0028] Preferably, the driving block 115 in this embodiment is fastened to the lower bottom surface of the lifting arm adjacent to the support arm 111. When the driving block 115 moves upward along the screw rod, it can drive the adjacent lifting arm to move upward, and then drive the remaining lifting arms to unfold synchronously through the chain assembly.

[0029] Preferably, in this embodiment, the first driving component 13 for driving the screw rod 113 to rotate includes a first motor 131 arranged at the lower end of the support arm 111, and a first reducer 132 connected to the first motor 131, and the first reducer 132 is connected to one end of the screw rod 113.

[0030] Furthermore, the auxiliary lifting device 2 in this embodiment is slidably connected to the lifting arm away from the side of the supporting assembly 11, and the auxiliary lifting device 2 includes an auxiliary lifting arm 21 that slides with the adjacent lifting arm, a working platform 22 that slides with the auxiliary lifting arm 21, and a second driving assembly for driving the working platform 22 to slide back and forth along the length direction of the auxiliary lifting arm 21, the second driving assembly includes a second motor 23 arranged at the lower end of the auxiliary lifting arm 21, a driven wheel 24 pivotally connected to the upper end of the auxiliary lifting arm 21, a synchronous belt 25 arranged between the second motor 23 and the driven wheel 24, and the working platform 22 that slides along the length direction of the auxiliary lifting arm 21 and is fastened to the synchronous belt 25. With this structural design, the working platform 22 can move up and down along the height direction of the auxiliary lifting arm 21. Since the auxiliary lifting arm 21 is lifted and lowered with the lifting assembly 12, when the lifting assembly 12 is unfolded to a predetermined height, the working platform 22 can be driven up and down by the second motor 23, so that the working platform 22 can be adjusted to different heights of the lifting assembly 12 to meet different construction requirements.

[0031] To be more specific, preferably, the lifting arm in this embodiment includes a first lifting arm 121, a second lifting arm 122 which is slidably arranged along the length direction of the first lifting arm 121, and a third lifting arm 123 which is slidably arranged along the length direction of the second lifting arm 122. In order to facilitate the assembly and connection between the first lifting arm 121, the second lifting arm 122 and the third lifting arm 123, the first lifting arm 121, the second lifting arm 122 and the third lifting arm 123 are all integrally provided with a long groove along the length for sliding relative to each other. Preferably, the first lifting arm 121, the second lifting arm 122 and the third lifting arm 123 can be integrally extruded by an aluminum extrusion die.

[0032] In order to drive the first lifting arm 121, the second lifting arm 122 and the third lifting arm 123 to be synchronously unfolded or retracted, the chain assembly in this embodiment includes a first chain assembly 124 pivotally connected to the first lifting arm 121, a second chain assembly 125 pivotally connected to the second lifting arm 122, and a third chain assembly 126 pivotally connected to the third lifting arm 123.

[0033] Specifically, the first chain assembly 124 includes a first sprocket assembly disposed on the top of the first lifting arm 121, and a first chain 1241 meshed with the first sprocket; the second chain assembly 125 includes a second sprocket assembly disposed on the top of the second lifting arm 122, and a second chain 1251 meshed with the second sprocket; the third chain assembly 126 includes a third sprocket assembly disposed on the top of the third lifting arm 123, and a third chain 1261 meshed with the third sprocket. Preferably, the first sprocket assembly, the second sprocket assembly and the third sprocket assembly all include a fixed shaft, and a sprocket coaxially rotatably connected to the fixed shaft.

[0034] Furthermore, in order to facilitate the synchronous unfolding or folding of the above-mentioned first lifting arm 121, the second lifting arm 122 and the third lifting arm 123, the lower bottom surface of the first lifting arm 121 in this embodiment is fastened to the driving block 115; one end of the first chain 1241 is fastened to the support arm 111, and the other end of the first chain 1241 is fastened to the lower bottom surface of the second lifting arm 122; one end of the second chain 1251 is fastened to the first lifting arm 121, and the other end of the second chain 1251 is fastened to the lower bottom surface of the third lifting arm 123; one end of the third chain 1261 is fastened to the second lifting arm 122, and the other end of the third chain 1261 is fastened to the lower bottom surface of the auxiliary lifting arm 21.

[0035] In order to further facilitate the setting of the second chain 1251 and the third chain 1261, preferably, one end of the second chain 1251 is fastened to the fixed shaft at the top of the first lifting arm 121, and one end of the third chain 1261 is fastened to the fixed shaft at the top of the second lifting arm 122.

[0036] With the lifting assembly 12 of the above-mentioned structural design, when the first motor 131 drives the screw rod 113 to rotate forward, the driving block 115 drives the first lifting arm 121 to move upward along the height direction of the support arm 111 under the action of the screw rod 113. At this time, the second lifting arm 122 drives the second lifting arm 122 to move upward under the action of the first chain 1241. Similarly, the third lifting arm 123 moves upward under the action of the second chain 1251, and the auxiliary lifting arm 21 moves upward under the action of the third chain 1261, so that the first lifting arm 121, the second lifting arm 122 and the third lifting arm 123 are deployed upward in sequence; conversely, when the first motor 131 drives the screw rod 113 to rotate reversely, the driving block 115 drives the first lifting arm 121 to move downward under the action of the screw rod 113, and under the action of gravity, the second lifting arm 122, the third lifting arm 123 and the auxiliary lifting arm 21 are lowered and retracted in sequence.

[0037] Furthermore, in this embodiment, a liftable work platform 22 is slidably provided on one side of the auxiliary lifting arm 21 in the height direction, so that the work platform 22 can move flexibly within different lifting heights of the lifting assembly 12, thereby greatly facilitating the construction of the work platform, and can also effectively avoid frequent starting of the first motor 131, effectively reducing the power consumption of the first motor 131. It should be supplemented that the lifting assembly 12 in this embodiment is not limited to the first lifting arm 121, the second lifting arm 122, and the third lifting arm 123, and can be expanded according to construction needs and reliability requirements.

[0038] Furthermore, the mounting platform in this embodiment is configured as a traction transport vehicle, and the traction transport vehicle includes a vehicle body 31, a support mechanism 32 disposed on the periphery of the vehicle body 31, a plurality of sensors disposed on the vehicle body 31 for detecting the balance of the vehicle body 31, and an electric control device electrically connected to the plurality of sensors for controlling the retraction, extension, and lifting of the support mechanism 32. As a further preferred embodiment, the support mechanism 32 in this embodiment includes a retraction and extension arm 321 horizontally rotatably connected to the vehicle body 31, and a liftable support member 322 vertically disposed at one end of the retraction and extension arm 321, and the retraction and extension arm 321 and the support member 322 are both driven by a motor to achieve their retraction, extension, and up and down movement. In this way, the automatic adjustment of the balance of the vehicle body 31 can be conveniently and flexibly realized, and then better support can be provided for the stable operation of the lifting device and the auxiliary lifting device 2. The specific structural design and electric control design of the traction transport vehicle have been disclosed in the relevant technology, and will not be described in detail here.

[0039] The technical principle of the present invention is described above in conjunction with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the scope of protection of the present invention in any way. Based on the explanations herein, those skilled in the art can associate other specific implementations of the present invention without paying creative labor, and these methods will fall within the scope of protection of the present invention.

Claims

1. A lifting device, characterized in that: include: The main lifting device comprises a support assembly mounted on the mounting platform, a lifting assembly slidably matched with the support assembly, and a first driving assembly for driving the lifting assembly to move back and forth along the height direction of the support assembly; the lifting assembly comprises a plurality of lifting arms slidably matched in sequence, and a plurality of chain assemblies arranged on the top of the plurality of lifting arms; when the first driving assembly drives one of the lifting arms adjacent to the support assembly to move upward, the remaining lifting arms are respectively deployed synchronously under the action of the plurality of chain assemblies; A secondary lifting device, the secondary lifting device comprises a secondary lifting arm slidably matched with the adjacent lifting arm, a working platform slidably matched with the secondary lifting arm, and a second driving assembly for driving the working platform to slide back and forth along the length direction of the secondary lifting arm; the lower end of the secondary lifting arm is connected to one end of the chain in the adjacent chain assembly; The support assembly includes a support arm vertically fastened to the mounting platform, a bearing seat mounted on both ends of the support arm, a screw rod disposed between the two bearing seats, a guide rod disposed on both sides of the screw rod, and a drive block threadedly connected to the screw rod and arranged to slide back and forth along the length direction of the guide rod; The lifting arm comprises a first lifting arm, a second lifting arm arranged to slide back and forth along the length direction of the first lifting arm, and a third lifting arm arranged to slide along the length direction of the second lifting arm; The chain assembly includes a first chain assembly pivotally connected to the first lifting arm, a second chain assembly pivotally connected to the second lifting arm, and a third chain assembly pivotally connected to the third lifting arm; The first chain assembly includes a first sprocket assembly disposed on the top of the first lifting arm, and a first chain meshed with the first sprocket; the second chain assembly includes a second sprocket assembly disposed on the top of the second lifting arm, and a second chain meshed with the second sprocket; the third chain assembly includes a third sprocket assembly disposed on the top of the third lifting arm, and a third chain meshed with the third sprocket; The lower bottom surface of the first lifting arm is fastened to the driving block; one end of the first chain is fastened to the supporting arm, and the other end of the first chain is fastened to the lower bottom surface of the second lifting arm; one end of the second chain is fastened to the first lifting arm, and the other end of the second chain is fastened to the lower bottom surface of the third lifting arm; one end of the third chain is fastened to the second lifting arm, and the other end of the third chain is fastened to the lower bottom surface of the auxiliary lifting arm; The second driving assembly includes a second motor arranged at the lower end of the auxiliary lifting arm, a driven wheel pivotally connected to the upper end of the auxiliary lifting arm, a synchronous belt arranged between the second motor and the driven wheel, and the working platform slidably arranged along the length direction of the auxiliary lifting arm and fastened to the synchronous belt.

2. A lifting device according to claim 1, characterized in that: The first driving assembly includes a first motor disposed at the lower end of the support arm, and a first reducer connected to the first motor, wherein the first reducer is connected to one end of the lead screw.

3. A lifting device according to claim 1, characterized in that: The first sprocket assembly, the second sprocket assembly and the third sprocket assembly each include a fixed shaft and a sprocket coaxially rotatably connected to the fixed shaft.

4. A lifting device according to claim 1, characterized in that: The mounting platform is configured as a traction transport vehicle, which includes a vehicle body, a support mechanism disposed on the periphery of the vehicle body, a plurality of sensors disposed on the vehicle body for detecting the balance of the vehicle body, and an electric control device electrically connected to the plurality of sensors for controlling the retraction, extension and lifting of the support mechanism.

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