CN220766378U - Multi-freedom-degree lifting device - Google Patents

Abstract

The utility model provides a multi-degree-of-freedom lifting device which comprises a movable base, a first lifting mechanism and a second lifting mechanism, wherein one end part of the first lifting mechanism is connected with the movable base, the other end part of the first lifting mechanism is provided with a lifting plate, and the first lifting mechanism is used for vertically adjusting the height of the lifting plate; one end of the second lifting mechanism is connected with the lifting plate, the other end of the second lifting mechanism is provided with a bracket for bearing the mechanism to be installed, and the second lifting mechanism is used for vertically adjusting the height of the bracket so as to adjust the installation height of the mechanism to be installed. The first lifting mechanism can realize first lifting so that the mechanism to be installed can reach the lower part of the installation position, and then the second lifting mechanism can continuously lift to the installation position, so that the installation height of the mechanism to be installed is flush with the installation position, and the problems of narrow installation position and large depth are further met.

Description

Multi-freedom-degree lifting device

Technical Field

The utility model relates to the technical field of auxiliary assembly of mechanical equipment, in particular to a multi-degree-of-freedom lifting device.

Background

In the field of auxiliary assembly of mechanical equipment, on-board heavy equipment of a full-load passenger car is usually assembled in a hoisting mode, but for assembling chassis parts, the vehicle is usually overhead, and the assembly is carried out from bottom to top, which can be called a bottom assembly method, and an electro-hydraulic steering gear serving as one of important equipment of the chassis is one of the installation targets.

However, the lower mounting method is faced with the disadvantages that large hoisting equipment is difficult to use, the operation space is narrow and limited, and the like. Meanwhile, the electro-hydraulic steering gear has larger dead weight and can only be installed with the assistance of lifting equipment with adjustable height.

In addition, the shape of the electrohydraulic steering device is irregular, and the aluminum alloy shell is not provided with hanging points and grabbing points, so that the electrohydraulic steering device is difficult to install in a grabbing or magnetic attraction mode, and a manual lifting method is adopted in most of the prior art.

However, in the current stage of the disassembly and assembly operation of the electro-hydraulic steering gear, 3-4 operators are usually required to cooperate with the operation due to the limitation of the operation space and the operation equipment, so that the labor hour consumption is large, the working condition is poor, and the potential safety hazard is large. The existing lifting mechanism cannot move in any direction, and automatic or semi-automatic equipment is urgently needed to replace manual operation.

Based on the above, the inventors have devised a multi-degree-of-freedom lifting device in order to solve the above technical problems.

Disclosure of Invention

The utility model aims to overcome the defects that in the prior art, the disassembly and assembly operation of an electro-hydraulic steering gear is time-consuming and labor-consuming, the working condition is poor, and the like, and has great potential safety hazard.

The utility model solves the technical problems by the following technical proposal:

the utility model provides a multi-degree-of-freedom lifting device, which is characterized by comprising:

a movable base;

the first lifting mechanism is connected with the movable base at one end part, a lifting plate is arranged at the other end part of the first lifting mechanism, and the first lifting mechanism is used for vertically adjusting the height of the lifting plate;

the second lifting mechanism is used for vertically adjusting the height of the bracket so as to adjust the installation height of the mechanism to be installed;

the lifting plate is provided with a sliding mechanism, and the sliding mechanism faces the second lifting mechanism;

the second lifting mechanism is in sliding fit with the sliding mechanism along the horizontal direction;

the other end of the second lifting mechanism is provided with a roller turntable, the bottom end face of the bracket is provided with a rotary seat, the rotary seat faces one end face of the second lifting mechanism, and the rotary seat and the roller turntable are assembled in a mutually matched mode to form a rotary fit.

According to one embodiment of the present utility model, the sliding mechanism includes a first rail and a second rail disposed at a distance from each other;

one end of the second lifting mechanism is arranged on the first guide rail and the second guide rail and is in sliding fit with the first guide rail and the second guide rail.

According to one embodiment of the utility model, an end face of the bracket facing away from the swivel mount is provided with a plurality of support plates for supporting the mechanism to be mounted.

According to one embodiment of the utility model, the first lifting mechanism comprises a support frame, a sliding plate and a first driving mechanism, wherein one end of the sliding plate is inserted into the support frame and is in sliding fit with the support frame;

the first driving mechanism is connected with the supporting frame and used for driving the sliding plate to vertically reciprocate along the supporting frame.

According to one embodiment of the utility model, the first drive mechanism is a hydraulic cylinder.

According to one embodiment of the utility model, the second lifting mechanism comprises at least one lifting unit, and two opposite ends of the lifting unit are fixedly connected with the lifting plate and the bracket respectively;

the lifting unit is used for stretching and retracting vertically to adjust the height of the bracket.

According to one embodiment of the utility model, the number of the lifting units is two and the lifting units are arranged at intervals;

the lifting unit is an electric screw jack.

According to one embodiment of the utility model, the movable base comprises a frame body and four universal wheels arranged at the bottom of the frame body;

one end part of the frame body, which is away from the universal wheel, is connected with the first lifting mechanism.

The utility model has the positive progress effects that:

the multi-degree-of-freedom lifting device has the following advantages:

1. the first elevating system can realize first lift to make to wait to install the mechanism and can reach the mounted position below, then second elevating system can continue to rise to the mounted position, makes it wait to install the installation height and the mounted position parallel and level of mechanism, and then satisfies and wait to install the narrow and small, the big problem of degree of depth of mechanism mounted position.

2. The bracket top sets up a plurality of backup pads, guarantees to wait to install the placement safety and stability of mechanism for place the thing and remove the in-process along with the device and do not rock, be convenient for bear and transport, safe and reliable, the danger source is controllable, and personnel's operation safety is ensured.

3. The device adopts the first elevating mechanism and the second elevating mechanism to avoid the influence of difficult torque application, low operation quality and the like of the fixing bolt in the tooling process caused by head tilting, can have a correct and stable operation posture, ensures the accuracy of fastening torque, and ensures the operation quality when the operation such as fastening torque and the like is carried out.

4. The sliding mechanism is added, so that the position of the mechanism to be installed can be adjusted in the horizontal direction, and the roller turntable is added, so that the mechanism to be installed can rotate at multiple angles in the horizontal direction, the adjustable space of the lifting device is greatly increased, and the safety precision and the flexibility of the lifting device are ensured.

Drawings

The above and other features, properties and advantages of the present utility model will become more apparent from the following description in conjunction with the accompanying drawings and embodiments, in which:

FIG. 1 is a schematic view of a multi-degree of freedom lifting device according to the present utility model;

FIG. 2 is a schematic view of a partially exploded view of a second lift mechanism of the multiple degree of freedom lift shown in FIG. 1;

fig. 3 is an exploded view of a second lifting mechanism and a portion of the first lifting mechanism of the multiple degree of freedom lifting device shown in fig. 1.

10. A movable base; 110. a frame body; 120. a universal wheel;

20. a first lifting mechanism; 210. a lifting plate; 220. a sliding mechanism; 221. a first guide rail; 222. a second guide rail; 230. a support frame; 240. a sliding plate; 250. a first driving mechanism;

30. a second lifting mechanism; 310. a bracket; 311. rotating base; 312. a support plate; 320. a roller turntable; 330. and a lifting unit.

Detailed Description

In order to make the above objects, features and advantages of the present utility model more comprehensible, embodiments accompanied with figures are described in detail below.

Embodiments of the present utility model will now be described in detail with reference to the accompanying drawings. Reference will now be made in detail to the preferred embodiments of the present utility model, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts. Furthermore, although terms used in the present utility model are selected from publicly known and commonly used terms, some terms mentioned in the present specification may be selected by the applicant at his or her discretion, the detailed meanings of which are described in relevant parts of the description herein. Furthermore, it is required that the present utility model is understood, not simply by the actual terms used but by the meaning of each term lying within.

Referring to fig. 1 to 3, the present utility model provides a multi-degree-of-freedom lifting device, which includes a movable base 10, a first lifting mechanism 20 and a second lifting mechanism 30, wherein one end of the first lifting mechanism 20 is connected with the movable base 10, the other end of the first lifting mechanism 20 is provided with a lifting plate 210, and the first lifting mechanism 20 is used for vertically adjusting the height of the lifting plate 210.

In one embodiment, the mechanism to be mounted is illustrated by way of example and not limitation as an electro-hydraulic steering gear. The electrohydraulic steering device has the advantages that the depth of the assembly position is large due to the narrow space in the chassis of the vehicle, the supporting cross beam in the equipment cabin is interfered, equipment cannot be fed in from the side surface, the equipment can only enter from the ground, and the installation surface is positioned on the back surface. The present application employs a two-stage height adjustment to facilitate transport of the electro-hydraulic steering gear from the vehicle underbody to the target depth and installation location.

That is, the installation position of the electro-hydraulic steering gear on the vehicle is relatively narrow and deeper than the chassis, so the first lifting mechanism 20 can firstly transport the electro-hydraulic steering gear to the position right below the installation position of the chassis, and then lift the electro-hydraulic steering gear to the chassis height, thereby realizing the first stage lifting control. The vertical direction corresponds to the up-down direction of the vehicle chassis and also corresponds to the direction perpendicular to the horizontal end surface of the chassis.

One end of the second lifting mechanism 30 is connected with the lifting plate 210, the other end of the second lifting mechanism 30 is provided with a bracket 310 for bearing a mechanism to be installed, and the second lifting mechanism 30 is used for vertically adjusting the height of the bracket 310, thereby adjusting the installation height of the mechanism to be installed.

Specifically, the lifting weight of the first lifting mechanism 20 is 0-1T, the lifting height is 0-2.5m, and the lowest height is 0.3-1m, so that the load bearing and lifting requirements of the electrohydraulic steering device and the tool can be met. The lifting weight of the second lifting mechanism 30 is 1T, the structure is compact compared with that of the first lifting mechanism 20, the size is smaller, continuous lifting in a narrow space can be realized, and the lifting of the actual installation position and depth of the electro-hydraulic steering gear can be met.

When the electro-hydraulic steering gear reaches the mounting position of the chassis under the driving of the first lifting mechanism 20, the electro-hydraulic steering gear can be driven to reach the final mounting position continuously by utilizing the second lifting mechanism 30, so that the problems of narrow mounting position and large depth of the electro-hydraulic steering gear are solved. The installation mode of the electrohydraulic steering device in the cabin body is to install the electrohydraulic steering device by utilizing the screw and the vehicle body, namely, the installation holes on the electrohydraulic steering device are required to be in one-to-one correspondence with the installation holes at the target position, so that the electrohydraulic steering device is beneficial to one-time installation completion, and the installation efficiency of the electrohydraulic steering device is improved.

In one embodiment, the lifting plate 210 is provided with a sliding mechanism 220 toward an end surface of the second lifting mechanism 30, and the second lifting mechanism 30 is slidably engaged with the sliding mechanism 220 in the horizontal direction.

The movable base 10 can transport the mechanism to be installed to the position under the installation position, then the first lifting mechanism 20 and the second lifting mechanism 30 are used for transporting the mechanism to be installed to the installation height, and because the mechanism is limited by too narrow installation space, the mechanism to be installed is difficult to directly correspond to the accurate installation position completely at one time, so the sliding mechanism 220 of the application can finely adjust the position of the mechanism to be installed in the horizontal direction, so that the assembly can be completed quickly no matter the operator arrives at the equipment cabin and is installed upwards from the bottom or downwards from the top in the cabin, and the installation efficiency of the electro-hydraulic steering gear is improved.

Referring to fig. 2 and 3, in one embodiment, the sliding mechanism 220 includes a first rail 221 and a second rail 222 disposed at a distance from each other, and one end of the second lifting mechanism 30 is mounted on the first rail 221 and the second rail 222 and slidingly engages with the first rail 221 and the second rail 222.

It should be noted that, a sliding groove (not shown) that is matched with the first rail 221 and the second rail 222 may be formed at the bottom of the second lifting mechanism 30, so that the second lifting mechanism 30 may slide along the length extension direction of the first rail 221 and the second rail 222, and further adjust the position of the mechanism to be installed along the length direction of the sliding mechanism 220.

The first rail 221 and the second rail 222 are disposed in parallel side by side, which is advantageous for improving the sliding stability of the second elevating mechanism 30. In other embodiments, a plurality of guide rails may be provided, and the number of guide rails is not limited to two, but may be three, four, or the like, and is not limited thereto.

The cross-sectional shapes of the first guide rail 221 and the second guide rail 222 along the extending direction of the length thereof are T-shaped (not shown), and the cross-sectional shapes of the sliding chute along the length direction thereof are inverted T-shaped which are matched with the shapes of the first guide rail 221 and the second guide rail 222, thereby avoiding rollover of the second lifting mechanism 30 when sliding relative to the sliding mechanism 220, and playing a good limiting role.

In other embodiments, the first rail 221 and the second rail 222 may be screw rods, and small motors may be additionally provided at the ends to drive the screw rods, so as to automatically control the position of the second lifting mechanism 30. The wireless remote control mode can avoid the staff to enter the bottom of the vehicle, and then the potential safety hazard in the installation process is reduced.

When the second lifting mechanism 30 conveys the mechanism to be installed to the installation height, the sliding mechanism 220 can be controlled to adjust the horizontal direction of the bracket 310, and the adjustment mode can be adjusted together with the movable base 10, so that the mechanism to be installed accurately reaches the installation position.

Specifically, the total stroke of the first guide rail 221 and the second guide rail 222 may be 10-50mm, the first guide rail 221 and the second guide rail 222 are connected with the lifting plate 210 by bolts, and the first guide rail 221 and the second guide rail 222 cooperate with the movable base 10 to change the posture of the mechanism to be mounted, so that the mechanism to be mounted can enter a narrow space.

With continued reference to fig. 2 and 3, in one embodiment, a roller turntable 320 is disposed on a side of the second lifting mechanism 30 facing away from the first lifting mechanism 20, and a rotating seat 311 sleeved on the roller turntable 320 and rotationally engaged with the roller turntable 320 is disposed on an end surface of the bracket 310 facing the second lifting mechanism 30.

The roller turntable 320 includes a tray body and a plurality of rollers disposed on the tray body, wherein the tray body is provided with a rolling groove, and the rollers are at least partially clamped in the rolling groove. The rotating seat 311 arranged on the bracket 310 is also provided with a matching groove matched with the roller, and the roller is at least partially clamped in the matching groove. By this arrangement, the bracket 310 and the roller turntable 320 are rotated in a rolling manner, thereby reducing friction during rotation of the bracket 310. Compared with the traditional sliding direction, the friction coefficient of the roller turntable 320 can be reduced by 1/50, and loads in the upper direction, the lower direction, the left direction and the right direction are borne at the same time, so that the supporting stability is stronger, and the rotating process is more stable.

In one embodiment, a plurality of support plates 312 are provided on an end surface of the bracket 310 facing away from the swivel base 311, and the plurality of support plates 312 are used to support the mechanism to be mounted.

Specifically, because the present application describes an electro-hydraulic steering truck as an example, the number of support plates 312 selected herein is three for supporting the inter-axle housing, the rear motor housing, and the end flange lower housing of the electro-hydraulic steering truck, respectively. The adjacent support plates 312 are spaced apart and of different heights to facilitate the bolts required for installation of the bottom-mounted electro-hydraulic steering gear. The bracket 310 and the support plate 312 are preferably made of nylon, so that abrasion of the surface of the mechanism to be mounted caused by rigid friction between the mechanism to be mounted and the bracket 310 and the support plate 312 in the transferring process is avoided.

In one embodiment, the first lifting mechanism 20 includes a support 230, a sliding plate 240, and a first driving mechanism 250, wherein one end of the sliding plate 240 is inserted into the support 230 and slidingly engages with the support 230, and the first driving mechanism 250 is connected to the support 230 and is used for driving the sliding plate 240 to reciprocate vertically along the support 230.

The sliding plate 240 can vertically reciprocate along the supporting frame 230 under the driving of the first driving mechanism 250, so as to adjust the height of the lifting plate 210.

Specifically, the first drive mechanism 250 is preferably a hydraulic cylinder. The sliding plate 240 is driven by utilizing the hydraulic principle, so that the height of the lifting plate 210 is adjusted, the control mode of the hydraulic cylinder is preferably controlled by remote control and wireless, and an operator can conveniently operate the lifting height of the lifting plate 210 in a remote control manner. In some other embodiments, the hydraulic cylinder may also select physical key control, which is not limited herein.

In some other embodiments, the first driving mechanism 250 may also be a linear motor, and one end of the linear motor extends into the support frame 230 and is connected to the sliding plate 240, so as to realize sliding of the sliding plate 240. Specifically, the driving direction for the linear motor needs to be identical to the length extension direction of the slide plate 240 and the support frame 230. I.e. in line with the above described vertical direction.

In one embodiment, the second elevating mechanism 30 includes at least one elevating unit 330, and opposite ends of the elevating unit 330 are fixedly connected to the elevating plate 210 and the bracket 310, respectively. The elevating unit 330 is vertically telescopic to adjust the height of the bracket 310.

Specifically, the number of the lifting units 330 is two and is set at intervals, and the lifting units 330 are electric screw jacks. The second lifting unit 330 includes a first steel plate and a second steel plate that are disposed opposite to each other, opposite ends of the electric screw jack are connected to the first steel plate and the second steel plate through bolts, one end of the first steel plate is slidably engaged with the sliding mechanism 220, and one end of the second steel plate is provided with the roller turntable 320.

Because the actual installation space of the electrohydraulic steering device is very small, the first driving mechanism 250 with larger size can be adopted to rapidly convey the mechanism to be installed to be level with the height of the chassis of the vehicle, and then the electric screw jack with smaller size is adopted to continuously convey the mechanism to be installed upwards, so that the final installation height and the installation position can be reached in the small space.

In addition, in order to ensure the overall tooling efficiency, the first driving mechanism 250 may select a device with relatively sufficient power, such as a hydraulic cylinder, a linear motor, etc., so that the lifting plate 210 may be quickly conveyed to a height close to the chassis, and the remaining distance space is limited, so that the second driving mechanism preferably adopts a device with a smaller size of an electric screw jack, so as to facilitate continuous conveying of the mechanism to be installed in a narrow space. Further, in order to ensure normal operation of conveying work, two, three or more lifting units 330 can be preferably arranged, and on the premise of meeting conveying requirements, the posture of a mechanism to be installed can be flexibly adjusted in an equipment cabin, so that quick positioning and installation are facilitated, and the electric screw jack is motorized, so that the labor intensity can be reduced.

In one embodiment, the movable base 10 includes a frame 110 and four universal wheels 120 disposed at the bottom of the frame 110, and an end of the frame 110 facing away from the universal wheels 120 is connected to the first lifting mechanism 20.

The universal wheel 120 may be configured to cooperate with the sliding mechanism 220 and the roller turntable 320 to achieve multiple degrees of freedom for adjusting the position of the mechanism to be mounted, so as to improve the mounting efficiency and the mounting accuracy.

The utility model relates to a multi-degree-of-freedom lifting device, which comprises the following steps of:

after the mechanism to be mounted is placed on the bracket 310 and is stable to be placed, the mechanism to be mounted is pushed to the lower part of the mounting position through the movable base 10, for example, the chassis height is about 1-1.2m, the lifting plate 210 can be driven to reach the vicinity of the chassis height under the driving of the first lifting mechanism 20, and then the mounting height of the mechanism to be mounted is continuously adjusted under the driving of the second lifting mechanism 30 until reaching the level with the mounting height position. Finally, the position of the mechanism to be mounted is fine-tuned by using the sliding mechanism 220 and the roller turntable 320 so that the hole sites on the mechanism to be mounted are aligned with the actual mounting positions. After the installation, the first elevating mechanism 20 and the second elevating mechanism 30 are operated to be reset.

Based on this, the multi-degree-of-freedom lifting device of the utility model comprises, but is not limited to, the following beneficial effects:

1. the first elevating system 20 can realize the first lift to make the device can reach the mounted position below, then the second elevating system 30 can continue to rise to the mounted position, make it wait to install the installation height of mechanism and mounted position parallel and level, and then satisfy the narrow and small, the big problem of degree of depth of mounted position.

2. The bracket 310 top sets up a plurality of backup pads 312, guarantees to wait to install the placement safety and stability of mechanism for place the thing and remove the in-process along with the device and do not rock, be convenient for bear and transport, safe and reliable, the danger source is controllable, and personnel's operation safety is ensured.

3. The device adopts the first elevating mechanism 20 and the second elevating mechanism 30 to avoid the influence of difficult torque application, low operation quality and the like of the fixing bolt in the tooling process caused by head tilting, can have a correct and stable operation posture, ensures the accuracy of fastening torque, and ensures the operation quality when the operation such as fastening torque and the like is carried out.

4. A sliding mechanism 220 is added so that the position of the mechanism to be mounted can be adjusted in the horizontal direction.

5. The roller turntable 320 is added, so that the mechanism to be installed can rotate at multiple angles horizontally, the adjustable space of the device is greatly increased, and the safety precision and the flexibility of the device are ensured.

In conclusion, the multi-degree-of-freedom lifting device provided by the utility model has the advantages of simple structure, safety, reliability, convenience in operation, capability of improving the assembly efficiency of a mechanism to be installed, contribution to reducing the labor intensity and saving the labor cost.

This application uses specific words to describe embodiments of the application. Reference to "one embodiment," "an embodiment," and/or "some embodiments" means that a particular feature, structure, or characteristic is associated with at least one embodiment of the present application. Thus, it should be emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various positions in this specification are not necessarily referring to the same embodiment. Furthermore, certain features, structures, or characteristics of one or more embodiments of the present application may be combined as suitable.

While the utility model has been described in terms of preferred embodiments, it is not intended to be limiting, but rather to the utility model, as will occur to those skilled in the art, without departing from the spirit and scope of the utility model. Therefore, any modification, equivalent variation and modification of the above embodiments according to the technical substance of the present utility model fall within the protection scope defined by the claims of the present utility model.

Claims (8)

1. A multiple degree of freedom lifting device, comprising:

a movable base;

the first lifting mechanism is connected with the movable base at one end part, a lifting plate is arranged at the other end part of the first lifting mechanism, and the first lifting mechanism is used for vertically adjusting the height of the lifting plate;

the second lifting mechanism is used for vertically adjusting the height of the bracket so as to adjust the installation height of the mechanism to be installed;

the lifting plate is provided with a sliding mechanism, and the sliding mechanism faces the second lifting mechanism;

the second lifting mechanism is in sliding fit with the sliding mechanism along the horizontal direction;

the other end of the second lifting mechanism is provided with a roller turntable, the bottom end face of the bracket is provided with a rotary seat, the rotary seat faces one end face of the second lifting mechanism, and the rotary seat and the roller turntable are assembled in a mutually matched mode to form a rotary fit.

2. The multiple degree of freedom lifting device of claim 1 wherein the slide mechanism includes a first rail and a second rail spaced apart from each other;

one end of the second lifting mechanism is arranged on the first guide rail and the second guide rail and is in sliding fit with the first guide rail and the second guide rail.

3. The multiple degree of freedom lifting device of claim 1 wherein an end of the bracket facing away from the swivel mount is provided with a plurality of support plates for supporting a mechanism to be mounted.

4. The multiple degree of freedom lifting device of claim 1 wherein the first lifting mechanism comprises a support frame, a sliding plate and a first driving mechanism, wherein one end of the sliding plate is inserted into the support frame and is in sliding fit with the support frame;

the first driving mechanism is connected with the supporting frame and used for driving the sliding plate to vertically reciprocate along the supporting frame.

5. The multiple degree of freedom lifting device of claim 4 wherein the first drive mechanism is a hydraulic cylinder.

6. The multiple degree of freedom lifting device of any one of claims 1-5 wherein the second lifting mechanism comprises at least one lifting unit, opposite ends of the lifting unit being fixedly connected to the lifting plate and the bracket, respectively;

the lifting unit is used for stretching and retracting vertically to adjust the height of the bracket.

7. The multiple degree of freedom lifting device of claim 6 wherein the number of lifting units is two and spaced apart;

the lifting unit is an electric screw jack.

8. The multiple degree of freedom lifting device of any one of claims 1-5 wherein the movable base comprises a frame and four universal wheels disposed at the bottom of the frame;

one end part of the frame body, which is away from the universal wheel, is connected with the first lifting mechanism.