CN219906858U

CN219906858U - Lifting device and lifting system for assembling vehicle frame

Info

Publication number: CN219906858U
Application number: CN202223606929.8U
Authority: CN
Inventors: 颜宇光; 孙得凤; 易伟平; 柳志诚; 何恩
Original assignee: Hunan Zoomlion Intelligent Aerial Work Machinery Co Ltd
Current assignee: Hunan Zoomlion Intelligent Aerial Work Machinery Co Ltd
Priority date: 2022-12-28
Filing date: 2022-12-28
Publication date: 2023-10-27
Anticipated expiration: 2032-12-28

Abstract

The utility model relates to engineering machinery assembly and discloses a lifting device which comprises a mounting base, a supporting beam, a power mechanism and a driving mechanism, wherein the power mechanism comprises a power piece, the driving mechanism comprises a screw rod and a screw rod nut sleeved on the screw rod and mounted on the supporting beam, the power piece is in transmission connection with the screw rod through a transmission assembly so as to drive the screw rod nut to drive the supporting beam to move along the axis direction of the screw rod, two ends of the supporting beam are respectively provided with a stand column, and the supporting beam is in sliding connection with the stand columns through a guide assembly. The device can enlarge working space, makes things convenient for the staff to carry out the operation, has reduced staff's working strength, has improved work precision when having improved work efficiency. The utility model further relates to a lifting system for assembling a vehicle frame comprising such a lifting device.

Description

Lifting device and lifting system for assembling vehicle frame

Technical Field

The utility model relates to engineering machinery assembly, in particular to a lifting device. The utility model further relates to a lifting system for assembling a vehicle frame comprising such a lifting device.

Background

When the arm type aerial working platform frame is assembled, because the ground clearance is small, when the hydraulic rubber pipe connection or the electric wire harness installation and other operations are carried out at the lower part of the frame, a worker cannot normally stand, and only can carry out the installation operation in a semi-squatting or lying operation mode. The continuous maintenance of such posture operation increases the working strength of the staff, makes the staff easily tired, and then reduces the working efficiency, and can not be visually detected during assembly, reducing the assembly accuracy.

Therefore, a new lifting device needs to be designed to assist the staff in completing the assembly work.

Disclosure of Invention

The utility model aims to solve the technical problem of providing the lifting device, which can enlarge the working space, is convenient for the working of staff, reduces the working intensity of the staff, improves the working efficiency and improves the working precision.

In order to solve the technical problems, the utility model provides a lifting device which comprises a mounting base, a supporting beam, a power mechanism and a driving mechanism, wherein the power mechanism comprises a power piece, the driving mechanism comprises a screw rod and a screw rod nut sleeved on the screw rod and mounted on the supporting beam, the power piece is in transmission connection with the screw rod through a transmission assembly so as to drive the screw rod nut to drive the supporting beam to move along the axis direction of the screw rod, two ends of the supporting beam are respectively provided with a stand column, and the supporting beam is in sliding connection with the stand columns through a guide assembly.

Preferably, the transmission assembly comprises a chain group and a screw sprocket, the screw sprocket is fixedly arranged at the lower end of the screw, the power piece is in transmission connection with the screw sprocket through the chain group, so that the screw can be driven by the screw sprocket to rotate around the axis of the screw, the screw sprocket is rotatably arranged in a screw support sleeve, and the screw support sleeve is arranged on the mounting base.

Specifically, the transmission assembly further comprises a reverser arranged on the installation base, the chain group comprises a first chain and a second chain, the power piece is in transmission connection with the reverser through the first chain, and the reverser is in transmission connection with the screw rod chain wheel through the second chain so as to change the rotation of the power piece input in the direction vertical to the installation base into the rotation of the direction parallel to the installation base.

More specifically, a first tensioning piece capable of controlling the tension of the first chain is arranged between the power piece and the commutator, and a second tensioning piece capable of controlling the tension of the second chain is arranged between the commutator and the screw sprocket.

Further, the power piece is located in the center of the installation base, a group of driving mechanisms and one reverser are respectively arranged on two sides of the power piece, and double chain wheels are arranged on the power piece and are in transmission connection with the corresponding reversers through the first chains.

Preferably, the guide assembly comprises a guide pulley mounted on the support beam and a guide rail matched with the guide pulley, the guide rail being mounted on the outer surface of the upright.

Preferably, the screw rod is penetrated through the screw rod stabilizing frame, the lower end of the screw rod stabilizing frame is fixedly connected with the mounting base, the upper end of the screw rod stabilizing frame is provided with a screw rod cap sleeved at the top end of the screw rod, and the screw rod can rotate around the axis of the screw rod cap.

Preferably, the power member is a driving motor.

Preferably, the screw rod and the screw rod nut are both T-shaped threads.

The utility model also discloses a lifting system for assembling the frame, which comprises a foundation pit and the lifting device in any one of the technical schemes, wherein the lifting device is fixedly connected and arranged on an embedded steel plate in the foundation pit, and a supporting reinforcing piece is arranged between the upright post of the lifting device and the inner wall of the foundation pit.

Through the technical scheme, the utility model has the following beneficial effects:

the utility model provides a lifting device which comprises a mounting base, a supporting beam, a power mechanism and a driving mechanism, wherein the power mechanism comprises a power piece, the driving mechanism comprises a screw rod and a screw rod nut, the screw rod nut is sleeved on the screw rod and is mounted on the supporting beam, the power piece is in transmission connection with the screw rod through a transmission component, and further the screw rod nut is driven to drive the supporting beam to move along the axis direction of the screw rod, stand columns are arranged at two ends of the supporting beam, and guide components are arranged between the supporting beam and the stand columns.

Additional features and advantages of the utility model will be set forth in the detailed description which follows.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the description serve to explain, without limitation, the utility model. In the drawings:

FIG. 1 is a front view of an embodiment of the lifting device of the present utility model;

FIG. 2 is a side view of an embodiment of the lifting device of the present utility model;

FIG. 3 is a top view of an embodiment of the lifting device of the present utility model;

fig. 4 is a partial enlarged view at a of fig. 2.

Description of the reference numerals

Detailed Description

The following detailed description of the embodiments of the utility model is provided in connection with the accompanying drawings, it being understood that the embodiments described herein are for purposes of illustration and explanation only, and the scope of the utility model is not limited to the following embodiments.

In the description of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "configured," "mounted," "connected," and "disposed" are to be construed broadly, and for example, the connection may be a direct connection, an indirect connection via an intermediary, a fixed connection, a removable connection, or an integral connection; either directly or indirectly via intermediate connectors, or by communication between or interaction between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, and thus, features defining "first," "second," or the like, may explicitly or implicitly include one or more of such features.

In the present utility model, unless otherwise indicated, directional terms such as "upper and lower" are defined in terms of upper and lower of the corresponding parts and "axial direction" is defined in terms of arrangement direction of the screw provided by the present utility model, and particularly in the drawings provided by the present utility model, the azimuth or positional relationship used is based on the azimuth or positional relationship shown in the drawings, for convenience of description and simplification of description only, without indicating or implying that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and therefore should not be construed as limiting the present utility model; the directional terms of the present utility model should be construed in connection with its actual installation state.

Referring to fig. 1, a first aspect of the present utility model provides a lifting device, which comprises a mounting base 1, a support beam 2, a power mechanism and a driving mechanism, wherein the power mechanism comprises a power member 3, the driving mechanism comprises a screw rod 4 and a screw rod nut 5 sleeved on the screw rod 4, the screw rod nut 5 is mounted on the support beam 2, the power member 3 is in transmission connection with the screw rod 4 through a transmission assembly, the screw rod nut 5 can drive the support beam 2 to move along the axis direction of the screw rod 4, two ends of the support beam 2 are respectively provided with a stand column 6, and the support beam 2 is in sliding connection with the stand column 6 through a guide assembly. According to the utility model, the driving component is controlled by the power component 3 to enable the screw rod 4 to rotate, so that the screw rod nut 5 drives the support beam 2 to move along the axis direction of the screw rod 4, and the frame bottom space is narrow during assembly, so that the assembly is extremely inconvenient.

It should be noted that, the main function of the mounting base 1 in the above technical solution is to provide support for the structural integrity of the lifting device provided by the present utility model, and the mounting base can be selected according to the specific requirements of the assembly site, and the supporting beam 2, the power mechanism, the driving mechanism, and the like can be directly disposed at the operation site.

As a specific embodiment of the present utility model, referring to fig. 1, in this specific embodiment, the screw nut 5 is installed inside the support beam 2, and the upright posts 6 penetrate through both ends of the support beam 2, so that not only the volume of the lifting device of the present utility model can be reduced, but also the structure can be more stable. It should be noted that, fig. 1 is only a specific embodiment of the present utility model, the screw nut 5 of the present utility model may be further installed on the lower surface or other parts of the support beam 2, so long as the screw nut 5 is sleeved on the screw 4 and can drive the support beam 2 to move along the axis direction of the screw 4, the same is true for the arrangement of the upright post 6, and the upright post 6 may penetrate through the support beam 2 and may be only arranged at two ends of the support beam 2, and is slidably connected with the support beam 2 through the guide assembly, so long as the upright post 6 is ensured to enable the structure of the lifting device of the present utility model to be more stable and simultaneously give the support beam 2 a guiding effect.

In addition, the transmission assembly of the present utility model includes a chain assembly and a screw sprocket 7, and as a specific embodiment of the present utility model, the screw sprocket 7 is mounted at the lower end of the screw 4, and the power member 3 is in transmission connection with the screw sprocket 7 through the chain assembly, so that the power member 3 can drive the screw sprocket 7 to rotate through the chain assembly, because the screw sprocket 7 is fixedly connected with the screw 4, the screw 4 can also rotate along with the same, and for structural stability, the screw sprocket 7 is mounted on the mounting base 1 through the screw support sleeve 8, and it should be noted that the screw sprocket 7 can rotate in the screw support sleeve 8. It should be noted that, the screw support sleeve 8 provides support for the screw 4 and the screw sprocket 7 on one hand, and can provide lubrication for the screw 4 and the screw sprocket 7 on the other hand, so as to prevent jamming during rotation.

Further, as shown in fig. 2 and 4, the transmission assembly may further include a commutator 9, the commutator 9 is mounted on the mounting base 1, and the chain set includes a first chain 10 and a second chain 11, the power member 3 is in transmission connection with the commutator 9 through the first chain 10, the commutator 9 is in transmission connection with the screw sprocket 7 through the second chain 11, the main function of the commutator 9 is to change the power output direction of the power member 3, as shown in fig. 2, the rotation direction of the power member 3 mounted on the mounting base 1 is perpendicular to the mounting base 1, but since the screw 4 is vertically disposed on the mounting base 1, the rotation direction of the screw 4 should be parallel to the mounting base 1, and it is necessary to change the rotation direction of the power member 3 through the use of the commutator 9, so as to better drive the screw sprocket 7 to rotate the screw 4.

It should be noted that the above is only one embodiment of the present utility model, and when the rotation direction of the power member 3 matches the transmission direction of the screw sprocket 7, the commutator 9 may be optionally not provided, so that the selection of the commutator 9 may be determined according to the specific use environment.

In addition, in order to realize better transmission effect, be provided with the first tensioning piece 12 that can control the rate of tension of first chain 10 between commutator 9 and power piece 3, be provided with the second tensioning piece 13 that can control the rate of tension of second chain 11 between commutator 9 and lead screw sprocket 7, the tensioning piece not only can control the tensioning of chain, can also prevent that the chain from appearing droing scheduling problem in the transmission process, can reduce the noise of chain in the transmission process simultaneously. It should be noted that the tensioning member in the above embodiment may be a chain tensioner currently available in the market.

Further, as shown in fig. 4, as a specific embodiment of the present utility model, one power member 3 is used together with two commutators 9, so for structural stability and balance of power transmission, the power member 3 may be disposed at a central position of the mounting base 1, the commutators 9 are disposed at two ends of the power member 3, and double sprockets 14 are disposed on the power member 3, and the double sprockets 14 are respectively connected with the corresponding commutators 9 through the first chain 10 in a transmission manner, because the double sprockets 14 can be connected with the commutators 9 through the first chain 10, so as to control rotation of the screw rods 4.

It should be noted that, according to the above embodiment and with reference to fig. 4, as a preferred embodiment of the present utility model, a structural form of a screw rod 4 matched with a supporting beam 2 may also be adopted, as shown in fig. 3, the power member 3 is disposed in the middle of the mounting base 1, and two sides of the power member are provided with commutators 9, and the commutators 9 are respectively in transmission connection with the corresponding commutators 9 through the cooperation of the double sprocket 14 and the first chain 10, and each commutators 9 is further in transmission connection with the corresponding screw rod sprocket 7 through the second chain 11, the screw rod sprocket 7 drives the screw rod 4 to rotate, and the screw nuts 5 sleeved on the screw rod 4 can drive the corresponding supporting beam 2 to move along the axial direction of the screw rod 4, as shown in fig. 3, the two ends of each supporting beam 2 are provided with upright posts 6, and as shown in fig. 3, the mounting base 1 is rectangular, the four upright posts 6 are respectively disposed at four corners of the rectangular mounting base 1, so that structural balance of the preferred embodiment can be ensured, and movement tracks and heights of the supporting beams 2 at two sides are consistent with each other, and danger when lifting a workpiece is avoided.

It should be further noted that, the number of the components may be set according to specific use conditions, for example, when the weight of the workpiece to be lifted is too large and the screw rod 4 in the middle cannot provide enough lifting force, the method of sleeving the screw rods 4 at two ends of the support beam 2 and arranging the upright posts 6 at the middle part of the support beam 2 may be adopted to solve the problem.

It should be noted that, the chain set in the transmission assembly is only a specific embodiment of the present utility model, and the transmission assembly may also be formed by gears meshed with each other, or may be formed by a manner of mutually matching the chain and the gears, so long as the driving of the power member 3 to the screw rod 4 can be ensured.

Referring to fig. 1, as a specific embodiment of the present utility model, the guide assembly of the present utility model includes a guide pulley 15 and a guide rail 16 matched with the guide pulley 15, wherein the guide pulley 15 is mounted on the support beam 2, the guide rail 16 is mounted on the upright post 6, and when the support beam 2 moves along the axis direction of the screw rod 4 under the driving of the screw rod nut 5, the guide pulley 15 also moves along the guide rail 16 under the driving of the support beam 2, so as to avoid the problem that the support beam 2 deviates from the expected set track during the movement process.

It should be noted that, the structural form of the guide assembly may be not only the guide pulley 15 and the guide rail 16, but also a sliding block and the guide rail 16, where the sliding block is disposed on the support beam 2, the guide rail 16 is disposed on the upright post 6, and the sliding block and the support beam 2 may be an integral part, so that the structure of the utility model is simplified more.

Furthermore, a locking member can be arranged on the guide pulley 15 or the sliding block, and the locking member does not work in the ascending process of the supporting beam 2, but can be locked with the guide rail 16 when the supporting beam 2 suddenly descends, so that the safety of the utility model is improved, and the safety of staff is ensured.

In addition, in order to ensure the stability of the screw rod 4, the screw rod 4 is further provided with a screw rod stabilizing frame 17, and in combination with fig. 1 and 3, as a specific embodiment of the utility model, the screw rod 4 is covered in the screw rod stabilizing frame 17, the lower end of the screw rod stabilizing frame 17 is fixedly connected with the installation base 1, the top end of the screw rod stabilizing frame 17 is provided with a screw rod cap 18, the screw rod cap 18 is sleeved on the top end of the screw rod 4, and the screw rod 4 can rotate in the screw rod cap 18, it is understood that the dimension of the screw rod 4 in the utility model is longer because of the operation requirement, and if the screw rod 4 is independently arranged on the installation base 1, the shaking can occur because of the longer dimension, and the four-bar stabilizing frame can provide support for the screw rod 4 to prevent the screw rod 4 from shaking and influencing the construction operation.

Preferably, the power piece 3 is a driving motor which can provide enough power to drive the screw rod 4,

Furthermore, the screw rod 4 and the screw rod nut 5 in the utility model both adopt T-shaped threads, so that mechanical self-locking at any height can be realized, and the supporting beam 2 cannot fall under the condition that the screw rod 4 does not rotate due to too heavy load and the like, thereby improving the overall safety and ensuring the safety of staff.

The second aspect of the present utility model provides a lifting system for assembling a vehicle frame, which comprises a foundation pit 19 and the lifting device provided in the first aspect of the present utility model, wherein the lifting device is arranged on an embedded steel plate 20 in the foundation pit 19, and a supporting reinforcement 21 is arranged between a column 6 of the lifting device and an inner wall of the foundation pit 19, so that the space occupied by the lifting device can be saved, the ground transportation of a workpiece is more convenient, the assembly line operation is more convenient, and the assembly efficiency and the accuracy of engineering machinery can be further improved.

In the description of the present utility model, the descriptions of the terms "one embodiment," "some embodiments," "a particular implementation," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In the present utility model, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present utility model have been described in detail above with reference to the accompanying drawings, but the present utility model is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present utility model within the scope of the technical concept of the present utility model, and all the simple modifications belong to the protection scope of the present utility model.

In addition, the specific features described in the above embodiments may be combined in any suitable manner without contradiction. The various possible combinations of the utility model are not described in detail in order to avoid unnecessary repetition.

Moreover, any combination of the various embodiments of the utility model can be made without departing from the spirit of the utility model, which should also be considered as disclosed herein.

Claims

1. The utility model provides a lifting device, its characterized in that, including installation base (1), supporting beam (2), power unit and actuating mechanism, power unit includes power piece (3), actuating mechanism includes lead screw (4) and cover are established on lead screw (4) and install lead screw nut (5) on supporting beam (2), power piece (3) pass through drive assembly with lead screw (4) transmission is connected, so that can drive lead screw nut (4) make lead screw nut (5) drive supporting beam (2) are followed the axis direction motion of lead screw (4), the both ends of supporting beam (2) are equipped with stand (6) respectively, supporting beam (2) with pass through guide assembly sliding connection between stand (6).

2. Lifting device according to claim 1, characterized in that the transmission assembly comprises a chain set and a screw sprocket (7), the screw sprocket (7) is fixedly mounted at the lower end of the screw (4), the power member (3) is in transmission connection with the screw sprocket (7) through the chain set so as to drive the screw (4) to rotate around the own axis through the screw sprocket (7), the screw sprocket (7) is rotatably mounted in a screw support sleeve (8), and the screw support sleeve (8) is mounted on the mounting base (1).

3. Lifting device according to claim 2, characterized in that the transmission assembly further comprises a commutator (9) mounted on the mounting base (1), the chain set comprises a first chain (10) and a second chain (11), the power member (3) is in transmission connection with the commutator (9) through the first chain (10), and the commutator (9) is in transmission connection with the screw sprocket (7) through the second chain (11) to commutate the rotation of the power member (3) input in the vertical mounting base direction into the rotation parallel to the mounting base direction.

4. A lifting device according to claim 3, characterized in that a first tensioning element (12) capable of controlling the tension of the first chain (10) is arranged between the power element (3) and the commutator (9), and a second tensioning element (13) capable of controlling the tension of the second chain (11) is arranged between the commutator (9) and the screw sprocket (7).

5. Lifting device according to claim 4, characterized in that the power element (3) is located in the centre of the mounting base (1), a set of driving mechanisms and one reverser (9) are respectively arranged on both sides of the power element (3), and the power element (3) is provided with double chain wheels (14) and is in transmission connection with the corresponding reverser (9) through the first chain (10) respectively.

6. Lifting device according to claim 1, characterized in that the guiding assembly comprises a guiding pulley (15) and a guiding rail (16) matching the guiding pulley (15), the guiding pulley (15) being mounted on the supporting beam (2), the guiding rail (16) being mounted on the outer surface of the upright (6).

7. The lifting device according to claim 1, further comprising a screw rod stabilizing frame (17), wherein the screw rod (4) penetrates through the screw rod stabilizing frame (17), the lower end of the screw rod stabilizing frame (17) is fixedly connected with the mounting base (1), a screw rod cap (18) sleeved at the top end of the screw rod (4) is arranged at the upper end of the screw rod stabilizing frame (17), and the screw rod (4) can rotate around the axis of the screw rod cap (18).

8. Lifting device according to any one of claims 1 to 7, wherein the power member (3) is a drive motor.

9. Lifting device according to any one of claims 1 to 7, characterized in that both the screw (4) and the screw nut (5) are threaded in a "T" shape.

10. Lifting system for assembling a vehicle frame, characterized in that it comprises a foundation pit (19) and a lifting device according to any one of claims 1 to 9, which lifting device is fixedly connected to a pre-buried steel plate (20) arranged in the foundation pit (19), a supporting reinforcement (21) being arranged between the upright (6) of the lifting device and the inner wall of the foundation pit (19).