CN115043362A - Movable lifting platform - Google Patents

Abstract

The invention discloses a mobile lifting platform, comprising a control unit, a fixed platform and a scissor fork type hydraulic lifting mechanism for driving the lifting and lowering of the fixed platform, as well as a mobile walking mechanism and an anti-over-tilting mechanism. The bottom of the mobile walking mechanism faces toward A lift cylinder is arranged in the direction away from the scissor fork type hydraulic lifting mechanism. When the piston rod of the lift cylinder extends, it drives the mobile traveling mechanism to move upward as a whole. A protective plate and an adjustment assembly in which the fixed plates on both sides of the direction are hinged, the scissors fork type hydraulic lifting mechanism is lifted upwards so that the inner support arm connecting seat at the bottom is separated from the adjustment assembly, and the protective plate is in the adjustment assembly. Driven by the assembly, it rotates and opens. The invention facilitates the staff to perform the leveling operation on the lifting platform in real time, and improves the safety and stability during the lifting and use of the platform.

Description

A mobile lifting platform

technical field

The invention relates to the technical field of lifting platforms, in particular to a mobile lifting platform.

Background technique

The scissor-type movable lifting platform is a kind of aerial work equipment that is vertically lifted and has a wide range of indoor and outdoor uses. It can be used for indoor and outdoor mechanical installation, equipment maintenance, building maintenance, etc. in stations, docks, bridges, halls, workshops, etc.; due to the stable performance of the hydraulic system, the gentle rise and fall, and the high safety of use, it is more and more used in various fields. more extensive.

Due to some scenarios that require the use of a mobile lifting platform, the flatness or slope of the ground exceeds the requirements of the equipment, resulting in the equipment being unusable. Therefore, it is necessary to provide a mobile lifting platform to solve the above problems.

SUMMARY OF THE INVENTION

In order to overcome the above shortcomings, the purpose of the present invention is to provide a mobile lifting platform, which is convenient for staff to perform leveling operations on the lifting platform in real time, and improves the safety and stability during the lifting and use of the platform.

In order to achieve the above purpose, the technical solution adopted in the present invention is: a mobile lifting platform includes a control unit, a fixed platform and a scissor fork type hydraulic lifting mechanism that drives the lifting and lowering of the fixed platform, and also includes a mobile traveling mechanism and an anti-over-tilting mechanism The bottom of the mobile traveling mechanism is provided with a lifting cylinder facing away from the scissor fork type hydraulic lifting mechanism. When the piston rod of the lifting cylinder extends, it drives the mobile traveling mechanism to move upward as a whole, so that the mobile traveling mechanism There is a space for the backing plate to be put in between at least one wheel and the ground; the anti-excessive tilt mechanism includes a protective plate and an adjustment assembly hinged with the fixed plates on both sides of the length direction of the mobile traveling mechanism, and the scissors The fork-type hydraulic lifting mechanism is lifted upward to separate the inner support arm connecting seat at the bottom from the adjusting assembly, and the protective plate is rotated and opened under the driving of the adjusting assembly.

Preferably, the mobile traveling mechanism is a mobile trolley, the lift cylinder is located at the bottom of the mobile trolley close to its center of gravity, the mobile trolley can drive the scissor fork-type hydraulic mechanism to move horizontally, and the bottom of the mobile trolley can move horizontally. The position of the center of gravity is the best position for setting the lifting cylinder, which effectively ensures the stability of the mobile trolley during the lifting process.

Preferably, the mobile trolley is provided with a place for placing a pad, a battery box panel that can be turned over, a warning light and an inclination sensor, and the lifting cylinder, the warning light, the inclination sensor and the scissor fork hydraulic lifting mechanism are all connected to the The control unit in the mobile trolley is electrically connected.

Preferably, the adjusting assembly includes a pressing shaft and a pressing shaft sleeve, the top end of the pressing shaft is in contact with the bottom of the inner support arm connecting seat, the bottom end is located in the pressing shaft sleeve, and is connected to the pressing shaft sleeve through a pressing shaft spring The inner bottom wall is connected, and the pressing shaft sleeve is connected with the moving trolley through the pressing shaft seat. When the inner support arm connecting seat moves upward under the action of the scissor-type hydraulic lifting mechanism, it is separated from the pressing shaft or remains connected to the pressing shaft. When the top ends are in contact with each other, there is no external pressure on the pressing shaft, and the protective plate is in a rotated open state. At this time, there is a small gap between the bottom of the protective plate and the ground. When the axle is broken, the lower edge of the protective plate is in contact with the ground, so as to prevent the mobile lift platform from being excessively tilted, and play a role in safety protection.

Preferably, the adjustment assembly further includes a middle link movably connected to the moving trolley, one end of the middle link is connected to the pressing wheel through a wheel pin, and the other end is connected to the lower link through a link connecting shaft connected, when the pressing shaft moves downward, the pressing shaft sleeve moves down, so that the pressing wheel rotates with the positioning pin of the middle connecting rod as the center of the circle, and the end of the lower connecting rod away from the middle connecting rod is hinged with the protective plate, By rotating the pressing wheel up or down around the positioning pin of the middle link, the end of the lower link connected with the middle link moves downwards or downwards, so as to realize the protection of the connection with the lower link The opening and closing of the board.

Preferably, the middle link is movably connected to the moving trolley through a middle link positioning pin, and the middle part of the lower link is connected to the moving trolley through a connecting spring, and the connecting spring is specifically a gas spring. When the scissor fork type hydraulic lifting mechanism is raised to a certain height, the pressure exerted by the inner arm connecting seat on the pressing shaft disappears, and the connecting spring is in an extended state at this time. The middle part is connected, so the lower link drives the hinged protective plate to rotate from a horizontal state to a slightly over-vertical state, and the rotation angle of the protective plate is limited by the fixed plate, so the protective plates on both sides constitute Figure-eight, at this time, the distance between the lower edge of the protective plate and the ground is small. When the wheel sinks or the wheel axle is broken, the lower edge of the protective plate contacts the ground and supports the moving trolley. To prevent the mobile trolley from being excessively inclined, the safety of the mobile trolley is ensured.

Preferably, the bottom of the mobile trolley is provided with a number of counterweight blocks corresponding to the positions of the lifting cylinders, and the scissor fork hydraulic lifting mechanism is a scissor lift controlled by a hydraulic cylinder. Set the counterweight block to ensure the stability of the mobile trolley when it is moved or driven by the lifting cylinder.

Preferably, two anti-over-tilting mechanisms are provided, and they are located on both sides of the moving trolley, respectively, so that the scissor-fork-type hydraulic lifting mechanism drives the fixed platform loaded with goods or staff to move up and down. At the same time, when the wheel axle of the mobile trolley is broken or other faults, the anti-over-tilting mechanisms on both sides can also ensure that the mobile trolley will not overturn, further improving the safety of the mobile lifting platform.

Beneficial effects of the present invention:

The present invention realizes the overall lifting of the mobile trolley through the mutual cooperation of the fixed platform, the scissor fork type hydraulic lifting mechanism, the mobile traveling mechanism and the anti-over-tilting mechanism, and the lifting cylinder in the mobile traveling mechanism is extended and retracted, which is convenient for work. Personnel add pads at the bottom of the wheels of the mobile trolley to adjust the tilt angle, so that the staff can level the lifting platform in real time; both sides of the moving trolley are provided with an anti-over-tilting mechanism, which can be adjusted by the adjustment component. The opening and closing of the protective plate improves the safety and stability of the fixed platform during the working process.

Description of drawings

1 is a perspective view of the overall structure of a preferred embodiment of the present invention;

FIG. 2 is an isometric view of the overall structure from another perspective of a preferred embodiment of the present invention;

3 is a partial structural perspective view of a preferred embodiment of the present invention;

4 is a partial structural schematic diagram of a preferred embodiment of the present invention;

5 is a schematic cross-sectional view of a partial structure of a preferred embodiment of the present invention;

In the figure: 1. Fixed platform; 2. Scissor fork hydraulic lifting mechanism; 3. Mobile traveling mechanism; 31. Mobile trolley; 32. Battery box panel; 33. Lifting cylinder; 34. Counterweight; 4. Inner support arm connecting seat; 5. Anti-excessive tilt mechanism; 51. Protective plate; 52. Adjustment assembly; 521. Pressing shaft seat; 522. Pressing shaft sleeve; 523. Lowering pressing shaft; 524. connecting rod; 526, middle connecting rod positioning pin; 527, pressing wheel; 528, wheel pin; 529, connecting rod connecting shaft; 530, lower connecting rod; 531, connecting spring.

Detailed ways

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the protection scope of the present invention can be more clearly defined.

Referring to Figures 1 to 5, a mobile lifting platform in this embodiment includes a control unit, a fixed platform 1, a scissor-type hydraulic lifting mechanism 2 that drives the fixed platform 1 to rise and fall, and also includes a mobile traveling mechanism 3 and the anti-over-tilting mechanism 5 the safety of the mobile lifting platform. , a lift cylinder 33 is provided at the bottom of the moving travel mechanism 3 towards the direction away from the scissor fork type hydraulic lift mechanism 2. When the piston rod of the lift cylinder 33 extends, it drives the moving travel mechanism 3 to move upward as a whole, so that the At least one wheel on the mobile running mechanism 3 and the ground is left with a space for the backing plate to be put in, that is, when the ground flatness or slope exceeds the equipment requirements, the lifting oil cylinder 33 drives the mobile running mechanism 3 to rise, and then A proper amount of the pads is placed under the wheels to be adjusted. After the pads are placed, the piston rod of the lift cylinder 33 is retracted, and the mobile traveling mechanism 3 is placed on the bottom surface. Agency 3 usage requirements.

The anti-excessive tilt mechanism 5 includes a protective plate 51 hinged to the fixed plates on both sides of the moving travel mechanism 3 in the length direction and an adjustment assembly 52. The support arm connecting seat 4 is separated from the adjusting assembly 52 , the protective plate 51 is rotated and opened under the driving of the adjusting assembly 52 , and the protective plate 51 is made to face the outer side of the moving trolley 31 through the adjusting assembly 52 . When the direction of rotation is rotated, the protective plates 51 on both sides are rotated in a figure-eight shape. When the wheel axle of the mobile trolley 31 breaks down and other faults, the protective plates 51 on both sides support the mobile trolley 31, which can ensure The mobile trolley 31 will not overturn, which further improves the safety of the mobile lifting platform.

The adjusting assembly 52 includes a pressing shaft 523 and a pressing shaft sleeve 522 . The top end of the pressing shaft 523 is in contact with the bottom of the inner support arm connecting seat 4 , and the bottom end is located in the pressing shaft sleeve 522 , and is connected to the pressing shaft through the pressing shaft spring 524 . The inner bottom wall of the pressing shaft sleeve 522 is connected, and the pressing shaft sleeve 522 is connected with the moving trolley 31 through the pressing shaft seat 521. When the inner support arm connecting seat 4 moves upward and disengages under the action of the scissor-type hydraulic lifting mechanism When the pressing shaft is pressed down or kept in contact with the top end of the pressing shaft, that is, there is no external pressure on the pressing shaft 523 at this time, the connecting spring 531 is in an extended state, and the protective plate is in a rotating open state. There is a small gap distance between the bottom of the plate and the ground. When the wheel sinks or the wheel axle breaks, the lower edge of the protective plate contacts the ground to prevent the mobile lifting platform from being excessively inclined, which plays a role in safety protection. .

The adjusting assembly 52 also includes a middle link 525 movably connected to the moving trolley 31 , one end of the middle link is connected to the pressing wheel 527 through a wheel pin 528 , and the other end is connected to the pressure wheel 527 through a connecting rod connecting shaft 529 . The lower link 530 is connected, and when the lower pressure shaft 523 moves downward, the pressure shaft sleeve 522 moves down, so that the pressure wheel 527 rotates with the center link positioning pin 526 as the center of the circle, and the lower link 530 is away from the middle link. One end is hinged with the protective plate 51, and the pressing wheel 527 is rotated upward or downward around the middle link positioning pin 526, so that the end of the lower link 530 connected with the middle link 525 is downward or downward. Move up to realize the opening and closing of the protective plate 51 connected with the lower link 530 .

The middle link 525 is movably connected to the moving trolley 31 through the middle link positioning pin 526 , and the middle of the lower link 530 is connected to the moving trolley 31 through a connecting spring 531 . When the mechanism 2 moves downward and exerts pressure on the pressing shaft 523 to move the pressing shaft 523 downward, the pressing shaft 523 presses the pressing wheel 527 downward. According to the lever principle, the connecting end of the lower link 530 and the middle link 525 is at this time. Moving upward, the end connected with the protective plate 51 drives the protective plate 51 to rotate toward the bottom of the moving trolley 31 to realize the closing of the protective plate 51. At this time, the connecting spring 531 is in a compressed state, when the scissors fork When the hydraulic lifting mechanism 2 moves upward and leaves the pressing shaft 523, the pressure exerted on the pressing wheel 527 disappears, the connecting spring 531 is in an extended state, and drives the protective plate 51 to rotate and open. The connecting spring 531 is specifically for gas springs.

The mobile trolley 31 is provided with a pad placement place 35, a battery box panel 32 that can be turned over and opened, a warning light and an inclination sensor. The control unit located in the mobile trolley 31 is electrically connected, and it is convenient to place multiple pads by setting the pad placement place 35, which is convenient for the staff to take; the lift cylinder 33, the warning light and the inclination sensor are all current technology.

The bottom of the mobile trolley 31 is provided with a number of counterweight blocks 34 corresponding to the positions of the lifting cylinders 33. The scissor fork hydraulic lifting mechanism 2 is a scissor lift controlled by a hydraulic cylinder. A counterweight 34 is arranged on the 31 to ensure that the moving trolley 31 maintains stability when moving or when the lifting cylinder 33 drives the lifting.

There are two anti-over-tilting mechanisms 5, and they are located on both sides of the moving direction of the moving trolley 31, so that the scissor fork-type hydraulic lifting mechanism 2 drives the fixed platform 1 loaded with goods or staff to move up and down. It is more stable, and at the same time, when the wheel axle of the mobile trolley 31 breaks and other faults, the anti-over-tilting mechanisms 5 on both sides can also ensure that the mobile trolley 31 will not overturn, further improving the safety of the mobile lifting platform.

Working principle: When the flatness or slope of the ground exceeds the equipment requirements, the mobile trolley 31 is provided with an inclination sensor for determining the overall inclination angle of the mobile trolley 31, the inclination sensor transmits a signal to the warning light, and the warning light lights up , at this time, the control unit controls the lifting cylinder 33 in the mobile trolley 31 to start working, the piston rod of the lifting cylinder 33 protrudes toward the direction close to the ground, the lifting cylinder 33 is located at the center of gravity of the mobile trolley 31, and A number of counterweight blocks 34 are fixed on the mobile trolley 31, which can also ensure the stability of the entire mobile trolley 31 when the mobile trolley 31 is lifted. The lifting cylinder 33 lifts the entire mobile trolley 31 to a certain height. According to the observation of the tilted state of the mobile trolley 31, the staff places an appropriate number of pads under the wheels on the lower side of the mobile trolley 31. The pads are metal pads. After the pads are placed, the piston rod of the lift cylinder 33 is retracted. , the mobile trolley 31 falls to the ground, and the adjustment of the mobile trolley 31 is completed at this time.

The moving trolley 31 is provided with an anti-over-tilting mechanism 5 on both sides of the moving trolley 31, and the driving oil cylinder on the scissor fork type hydraulic lifting mechanism 2 drives the inner support arm connecting seat 4 to move upward, and is separated from the lower part. The pressing shaft 523, the pressure exerted on the pressing wheel 527 and the connecting spring 531 disappear, the connecting spring 531 changes from the compressed state to the extended state, so that the lower link 530 pushes the hinged guard plate 51. Rotate toward the outer side of the mobile trolley 31 to a state slightly beyond the vertical. When the wheel axle of the mobile trolley 31 breaks or the wheel sinks or other faults, the lower edges of the protective plates 51 on both sides are in contact with the ground, from the two sides. The moving trolley 31 is supported on the side, so as to ensure that the moving trolley 31 will not overturn, and further improve the

The above embodiments are only to illustrate the technical concept and characteristics of the present invention, and their purpose is to allow those familiar with the art to understand the content of the present invention and implement it, and cannot limit the scope of protection of the present invention. Equivalent changes or modifications made should all be included within the protection scope of the present invention.

Claims (8)

1. The utility model provides a portable lift platform, includes the control unit, fixed platform (1) and drive scissors fork hydraulic lifting mechanism (2) that fixed platform (1) goes up and down, its characterized in that: the scissors fork type hydraulic lifting mechanism is characterized by further comprising a moving travelling mechanism (3) and an excessive inclination prevention mechanism (5), wherein a lifting oil cylinder (33) is arranged at the bottom of the moving travelling mechanism (3) in a direction away from the scissors fork type hydraulic lifting mechanism (2), and when a piston rod of the lifting oil cylinder (33) extends out, the moving travelling mechanism (3) is driven to integrally move upwards, so that a gap for placing a base plate is reserved between at least one wheel on the moving travelling mechanism and the ground;

the excessive inclination prevention mechanism (5) comprises a protection plate (51) and an adjusting component (52), the protection plate is hinged to fixing plates on two sides of the length direction of the movable walking mechanism (3), the scissor fork type hydraulic lifting mechanism (2) is lifted upwards to enable an inner supporting arm connecting seat at the bottom of the scissor fork type hydraulic lifting mechanism to be separated from the adjusting component (52), and the protection plate (51) is driven by the adjusting component (52) to rotate and open.

2. A mobile lift platform according to claim 1 wherein: the movable travelling mechanism (3) is specifically a movable trolley (31), the lifting oil cylinder (33) is specifically positioned at the position, close to the gravity center, of the bottom of the movable trolley (31), and the movable trolley (31) can drive the scissor fork type hydraulic mechanism (2) to move horizontally.

3. A mobile lift platform according to claim 1 wherein: the adjusting assembly (52) comprises a pressing shaft (523) and a pressing shaft sleeve (522), the top end of the pressing shaft (523) is abutted to the bottom of the inner support arm connecting seat (4), the bottom end of the pressing shaft is located in the pressing shaft sleeve (522), the pressing shaft is connected with the inner bottom wall of the pressing shaft sleeve (522) through a pressing shaft spring (524), and the pressing shaft sleeve (522) is connected with the mobile trolley (31) through a pressing shaft seat (521).

4. A mobile lift platform according to claim 3 wherein: the adjusting assembly (52) further comprises a middle connecting rod (525) movably connected with the mobile trolley (31), one end of the middle connecting rod (525) is connected with the pressing wheel (527) through a wheel pin (528), the other end of the middle connecting rod is connected with the lower connecting rod (530) through a connecting rod connecting shaft (529), when the lower pressing shaft (523) moves downwards, the pressing shaft sleeve (522) moves downwards, the pressing wheel (527) rotates by taking a middle connecting rod positioning pin (526) as a circle center, and one end, far away from the middle connecting rod, of the lower connecting rod (530) is hinged to the protection plate (51).

5. A mobile lift platform according to claim 4 wherein: the middle connecting rod (525) is movably connected with the mobile trolley (31) through a middle connecting rod positioning pin (526), the middle part of the lower connecting rod (530) is connected with the mobile trolley (31) through a connecting spring (531), and the connecting spring (531) is specifically an air spring.

6. A mobile lift platform according to claim 1 wherein: the mobile trolley is characterized in that a base plate placing part (35), a battery box panel (32) capable of being turned and opened, a warning lamp and an inclination angle sensor are arranged on the mobile trolley (31), and the lifting oil cylinder (33), the warning lamp, the inclination angle sensor and the scissors fork type hydraulic lifting mechanism (2) are all electrically connected with a control unit in the mobile trolley (31).

7. A mobile lift platform according to claim 2 wherein: the bottom of the mobile trolley (31) is provided with a plurality of balancing weights (34) corresponding to the positions of the lifting cylinders (33), and the scissor fork type hydraulic lifting mechanism (2) is a scissor fork type lifter controlled by a hydraulic cylinder.

8. A mobile lift platform according to claim 1 wherein: the two excessive inclination prevention mechanisms (5) are arranged and are respectively positioned on two sides of the moving direction of the moving trolley (31).

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