Movable lifting operation platform

Abstract

The utility model discloses a movable lifting operation platform which comprises a frame and a leveling support leg, the leveling support leg is horizontally and rotatably connected with the frame through a rotating mechanism, and the rotating mechanism drives the leveling support leg to bidirectionally rotate between operation positions on the left side and the right side of the frame and a folding position in the front-back direction. The leveling supporting legs are connected with the frame through the rotating mechanism, so that the leveling supporting legs can be bidirectionally rotated and switched between the operation positions on the left side and the right side of the frame and the folding positions in the front-back direction, the width of a whole vehicle body of the movable lifting operation platform can be flexibly reduced, meanwhile, the supporting legs are easy to adjust, and the working efficiency is improved. The operation stability and the transportation trafficability can be both considered.

Description

TECHNICAL FIELD

[0001] The utility model relates to a lifting work platform, especially a mobile lifting work platform. BACKGROUND

[0002] The mobile lifting work platform plays a key role in many fields, which can conveniently lift personnel and materials to the required position, effectively meeting the work requirements of high-altitude operation, different height construction and maintenance, etc. In the prior art, the working stability of the mobile lifting work platform depends on the support of the fixed leveling legs plus the self-weight of the whole machine. However, the leveling legs cannot be disassembled or adjusted after installation, and to some extent, the width of the whole machine is widened, which cannot balance the working stability and transportation passability, resulting in that the application of the work platform in narrow space and complex road conditions is limited. SUMMARY

[0003] The utility model aims at providing a mobile lifting work platform with simple leveling leg adjustment and balanced working stability and transportation passability.

[0004] Technical scheme: The mobile lifting work platform comprises a vehicle frame and leveling legs, the leveling legs are connected with the vehicle frame by a rotating mechanism, the rotating mechanism drives the leveling legs to rotate bidirectionally between the working position on the left and right sides of the vehicle frame and the folding position in the front and back directions, so that the overall width of the vehicle frame can be reduced when passing through a narrow road section, and the overall stability is enhanced by rotating to the working position during operation.

[0005] Preferably, the rotating mechanism comprises a fixed seat and a pin shaft set matched with the fixed seat, the fixed seat is arranged on the vehicle frame, and the pin shaft set is rigidly connected with the leveling legs.

[0006] Preferably, the pin shaft set comprises a rotating shaft and an index pin, the index pin is matched with the positioning hole on the rotating shaft to limit the rotation angle; the mechanical locking of the index pin and the positioning hole realizes multi-angle accurate positioning, supports rapid tool-free adjustment, enhances the stability of the leveling leg unfolding, improves the durability of the rotating part, simplifies the maintenance through modular design, and reduces the replacement cost.

[0007] Preferably, the index pin adopts a knob plunger reset mechanism with an L-shaped handle, and the pin shaft set further comprises a self-lubricating bearing, a thrust washer and a snap spring, the self-lubricating bearing is used to reduce the rotation friction, and the thrust washer and the snap spring are used to disperse the axial load.

[0008] Preferably, the rotating mechanism further comprises a hydraulic drive or an electric drive connected with the rotating shaft.

[0009] Preferably, the leveling leg end is provided with a replaceable grounding disc which is spherically articulated with the leveling leg through a quick release structure; the self-adaptive leveling of the grounding disc is realized through the spherical articulation, and the support stability under complex terrain is improved; the design of the quick release structure facilitates the replacement of worn parts and is compatible with multiple types of grounding discs, thereby reducing the maintenance cost; the dynamic load dispersion reduces the local pressure, thereby prolonging the service life of the leveling leg.

[0010] Preferably, the leveling leg is made of high-strength alloy steel material, is provided with an anti-corrosion coating on the surface, and is provided with an adjustable screw rod structure at the bottom of the foot for adapting to different ground slopes and ensuring the horizontal stability of the platform.

[0011] Preferably, the leveling leg further comprises a locking device for automatically locking the position of the leveling leg when the leveling leg is fully extended or retracted, preventing accidental displacement during operation or movement, and improving the operation safety.

[0012] Beneficial effects: Compared with the prior art, the leveling leg and the frame are connected through a rotating mechanism, the leveling leg can be bidirectionally rotated and switched between the operation position on the left and right sides of the frame and the folding position in the front and rear directions, the overall vehicle width of the mobile lifting work platform can be flexibly reduced, the leveling leg adjustment is simple, and the operation stability and transportation passability can be considered. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a whole schematic view of the mobile lifting work platform leveling of the utility model.

[0014] Figure 2 It is a whole schematic view of the mobile lifting work platform leveling of the utility model.

[0015] Figure 3 It is an enlarged schematic view of the A component of the utility model.

[0016] Figure 4 It is an enlarged schematic view of the B component of the utility model.

[0017] Figure 5 It is a structure schematic view of the pin shaft group of the utility model.

[0018] Figure 6 It is a sectional view of the pin shaft group of the utility model. DETAILED DESCRIPTION

[0019] The technical scheme of the utility model will be further described below with reference to the drawings.

[0020] As Figures 1-6As shown, a mobile lifting work platform, through the design of rotating mechanism and leveling legs 2, realizes flexible adjustment of the width of the frame 1 and improvement of work stability. The rotating mechanism includes a fixed seat 3 and a pin shaft group 4 in rotating cooperation with the fixed seat 3. The fixed seat 3 is symmetrically arranged at the positions near the four corners of the front and rear of the frame 1, and a self-lubricating bearing is embedded in each fixed seat 3. At the same time, a corresponding number of leveling legs 2 are arranged corresponding to the fixed seat 3, and the pin shaft group 4 is rigidly connected to each leveling leg 2. The pin shaft group 4 includes a rotating shaft 5 and a dividing pin 6, the rotating shaft 5 is rigidly connected to the leveling leg 2 through the self-lubricating bearing, and the dividing pin 6 cooperates with the positioning hole on the rotating shaft 5 to realize the rotation angle limitation. The rotating shaft 5 is provided with a positioning hole, and the dividing pin 6 is a knob plunger reset mechanism with an L-shaped handle, the plunger can cooperate with the positioning hole, when rotating the handle of the dividing pin 6, the plunger is lifted up to disengage from the positioning hole, so that the locking is released, and the leveling leg 2 is driven manually or by hydraulic or electric drive to rotate, when it is rotated to the required position, the handle of the dividing pin 6 is rotated, and the plunger of the dividing pin 6 is automatically inserted into the positioning hole under the action of the spring to complete the locking, avoiding the shaking of the adjusting leg 2. The combination design of the thrust washer and the snap spring on the pin shaft group 4 can disperse the axial load, and the design of the self-lubricating bearing can reduce the rotating friction, so that the leveling leg 2 can smoothly rotate in the folding position of the frame front and rear direction and the work position of the frame left and right side.

[0021] At the same time, in order to ensure the safety of the work, the leveling leg 2 is made of high-strength alloy steel material, and in order to avoid oxidation and corrosion, the surface is sprayed with an epoxy resin anticorrosive coating. The end of the leveling leg 2 is connected to the grounding disc 7 through a quick release structure, which is convenient for replacing and maintaining the grounding disc 7. A spherical hinge structure is provided between the grounding disc 7 and the leveling leg 2, and the self-adaptive leveling of the grounding disc is realized through the spherical hinge, which improves the support stability under complex terrain; the design of the quick release structure is convenient for replacing the worn parts and compatible with multiple types of grounding discs 7, which reduces the maintenance cost; dynamic load dispersion reduces local pressure, prolonging the service life of the leg. The bottom of the leg is provided with an adjustable screw structure for adapting to different ground slopes and ensuring the horizontal stability of the platform; the leveling leg 2 also includes a locking device for automatically locking the leg position when the leg is fully expanded or retracted, preventing accidental displacement during work or movement, and improving the operation safety. A spacer is also installed between the fixed seat 3 and the leveling leg 2, and the lower end of the rotating shaft 5 has a mounting hole which is fixed with a split pin to prevent the rotating shaft 5 from coming out.

[0022] The working principle of the whole device is: when leveling work is needed, the operator rotates the handle of the index pin 6 to release the locking relationship between the leveling legs 2 and the fixed seat 3, rotates the leveling legs 2 through the hydraulic drive, and makes them rotate 90° from the folding position in the front and rear direction of the vehicle frame 1 to the working position on the left and right sides. After the leveling legs 2 are unfolded, the telescopic sleeve is extended according to the ground height, the length of the leveling legs 2 is adjusted through the screw structure, the ground plate 7 is self-adapted to the ground inclination through the spherical hinge, and the platform is ensured to be horizontal. During the operation, the mechanical locking of the index pin 6 and the positioning hole maintains the angle stability of the leveling legs 2, and the self-lubricating bearing reduces the wear and tear during long-term use. When it is necessary to pass through a narrow road section, the index pin locking is released, the drive leg is rotated to the folding position, and the spring locking device automatically fixes the position of the leveling legs 2. Since the leveling legs 2 can be rotated to the front and rear sides of the vehicle frame 1, the overall width of the vehicle body is smaller, which facilitates passing through the narrow road section, so that the whole device can balance the operation stability and the transportation passability. In the working state, the width of the whole machine is consistent with that of the high-altitude work platform with fixed legs, which ensures the stability of the whole machine; in the transportation process, the leveling legs 2 can be rotated to the front and rear sides, the width of the whole machine is reduced, the passability in the narrow channel is improved, the operation is simple, and the working condition adaptability of the whole machine is improved.

Claims

1. A mobile elevating work platform comprising a chassis (1) and levelling legs (2), characterised in that: The leveling leg (2) is horizontally connected with the frame (1) through a rotating mechanism, and the rotating mechanism drives the leveling leg (2) to rotate bidirectionally between the working position on the left and right sides of the frame (1) and the folding position in the front and back directions.

2. The mobile aerial lift according to claim 1, wherein: The rotating mechanism comprises a fixed seat (3) and a pin shaft group (4) in rotational cooperation with the fixed seat (3), the fixed seat (3) is arranged on the frame (1), and the pin shaft group (4) is rigidly connected with the leveling leg (2).

3. The mobile aerial lift according to claim 2, wherein: The pin shaft group (4) comprises a rotating shaft (5) and an index pin (6), the index pin (6) is matched with a positioning hole on the rotating shaft (5) to limit the rotation angle.

4. The mobile aerial lift according to claim 3, wherein: The index pin (6) adopts a knob plunger reset mechanism with an L-shaped handle, and the pin shaft group (4) further comprises a self-lubricating bearing, a thrust washer and a snap spring, the self-lubricating bearing is used to reduce the rotation friction, and the thrust washer and the snap spring are used to disperse the axial load.

5. The mobile aerial lift according to claim 1, wherein: The rotating mechanism further comprises a hydraulic drive or an electric drive connected with the rotating shaft (5).

6. The mobile aerial lift according to Claim 1, wherein: The leveling leg (2) is provided at the end with a replaceable grounding disc (7), and the grounding disc (7) is spherically hinged with the leveling leg (2) through a quick release structure.

7. The mobile aerial lift according to claim 1 or 6, wherein: The leveling leg (2) is made of high-strength alloy steel material, and is provided on the surface with a corrosion-resistant coating, and the bottom of the leg is provided with an adjustable screw rod structure for adapting to different ground slopes and ensuring the horizontal stability of the platform.

8. The mobile aerial lift according to claim 1, wherein: The leveling leg (2) further comprises a locking device for automatically locking the position of the leg when the leg is fully unfolded or retracted.

Images