CN111115501B - Lifting device of end underframe of piggyback vehicle - Google Patents
Lifting device of end underframe of piggyback vehicle Download PDFInfo
- Publication number
- CN111115501B CN111115501B CN202010131395.4A CN202010131395A CN111115501B CN 111115501 B CN111115501 B CN 111115501B CN 202010131395 A CN202010131395 A CN 202010131395A CN 111115501 B CN111115501 B CN 111115501B
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- Prior art keywords
- supporting
- rod
- base
- support
- lifting device
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
- B66F7/065—Scissor linkages, i.e. X-configuration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G67/00—Loading or unloading vehicles
- B65G67/02—Loading or unloading land vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
- B66F7/08—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement hydraulically or pneumatically operated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/28—Constructional details, e.g. end stops, pivoting supporting members, sliding runners adjustable to load dimensions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F2700/00—Lifting apparatus
- B66F2700/12—Lifting platforms for vehicles or motorcycles or similar lifting apparatus
Abstract
The invention relates to a lifting device of an end underframe of a piggyback vehicle, which comprises a base, a supporting seat and a driving mechanism, wherein two sides of the supporting seat are respectively connected with the base through a supporting component; the base is provided with a first slideway, and the supporting seat is provided with a second slideway; the support assembly comprises a first support rod and a second support rod which are arranged in a crossing manner, the top end of the first support rod is hinged with the support seat, the bottom end of the first support rod can slide along the first slideway, the bottom end of the second support rod is hinged with the base, and the top end of the second support rod can slide along the second slideway; the driving mechanism can act on the support assembly to change the included angle between the first support rod and the second support rod. The end underframe can be stably lifted, and loading and unloading operations can be conveniently and smoothly carried out.
Description
Technical Field
The invention relates to the technical field of piggyback vehicles, in particular to a lifting device of an end underframe of a piggyback vehicle.
Background
Piggyback transportation refers to a convenient transportation mode that a highway truck, a semitrailer or other highway vehicles load cargoes and then automatically drive the piggyback truck at a railway station at an origin and finish long-distance transportation through a railway, and after the highway vehicles reach a railway station at a destination, the highway vehicles can automatically drive the piggyback truck down and drive to the final destination.
The body of the piggyback car can generally comprise a body part and a separable supporting part, when loading and unloading are carried out, the supporting part can be rotated or translated from the body part and separated, so that the road car can be conveniently opened and closed, and after loading and unloading are completed, the supporting part can be installed on the body part.
The body part comprises a bogie and an end underframe, two ends of the supporting part can be respectively connected with one end underframe to form a whole, then, two supporting frames are respectively used for supporting the two end underframes from the bottoms of the end underframes, wherein the gravity center of the end underframe is positioned at one side of a supporting point (the supporting point of a bogie center plate) towards the supporting part, therefore, when the supporting part is required to be separated from the body part, the supporting part is required to be lifted integrally, the acting force of the end underframe on the bogie is enabled to be zero, then, the supporting part is lifted, rotated or translated, the end underframe is prevented from deflecting relative to the bogie when the supporting part is separated from the end underframe, and how to stably lift the end underframe is important.
Therefore, how to provide a lifting device for an end chassis, which can realize stable lifting of the end chassis, is convenient for loading and unloading operations smoothly, and is a technical problem to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a lifting device of an end underframe of a piggyback vehicle, which can realize stable lifting of the end underframe and is convenient for loading and unloading operations smoothly.
In order to solve the technical problems, the invention provides a lifting device of an end underframe of a piggyback, which comprises a base, a supporting seat and a driving mechanism, wherein two sides of the supporting seat are respectively connected with the base through a supporting component; the base is provided with a first slideway, and the supporting seat is provided with a second slideway; the support assembly comprises a first support rod and a second support rod which are arranged in a crossing manner, the top end of the first support rod is hinged with the support seat, the bottom end of the first support rod can slide along the first slideway, the bottom end of the second support rod is hinged with the base, and the top end of the second support rod can slide along the second slideway; the driving mechanism can act on the support assembly to change the included angle between the first support rod and the second support rod.
When the driving mechanism acts on the supporting component to enable the included angle between the first supporting rod and the second supporting rod to be reduced, the height of the supporting component is increased, so that the supporting component is driven to rise relative to the base, the end chassis of the piggyback truck is lifted upwards towards one end of the supporting component until a center plate of the bogie is not stressed any more, lifting operation of the supporting component can be carried out, at the moment, the end chassis cannot deviate due to supporting of the lifting device, and after the supporting component is assembled and disassembled and matched with the end chassis again, the driving mechanism acts on the supporting component to enable the included angle between the first supporting rod and the second supporting rod to be increased, so that the height of the supporting component is reduced, and the supporting component is driven to fall relative to the base.
After the piggyback car reaches a loading and unloading yard, after the parking positions of the train and the parking position are accurately positioned, lifting devices (four lifting devices are respectively arranged on the left side and the right side below end underframes at the front end and the rear end of the supporting portion, the lifting devices act to enable the front end underframes and the rear end underframes to drive the supporting portion to ascend towards one end of the supporting portion, the lifting devices keep stable positions until the bogie core disc is at a position which is not stressed any more, and then the lifting devices used for driving the supporting portion drive the supporting portion to ascend and rotate or translate, so that two ends of the supporting portion are respectively connected with slope transition devices arranged on the ground, and loading and unloading are facilitated.
The lifting device of the end underframe of the piggyback provided by the invention drives the end underframe to lift, has a simple structure and can stably drive the end underframe to lift when the piggyback is loaded and unloaded.
Optionally, the driving mechanism includes a driving member and a locking assembly, where the driving member is disposed on the base and can act on the supporting assembly to change an included angle between the first supporting rod and the second supporting rod, and when the included angle between the first supporting rod and the second supporting rod reaches a minimum, the locking assembly can lock a relative position of the first supporting rod and the second supporting rod.
Optionally, the locking component comprises a push rod and a rocker, and the base is also provided with a pin seat; the push rod comprises a first section, a bending section and a second section which are sequentially arranged, the end part of the first section is hinged with the bottom end of the first support rod and can slide along the first slideway, and the bending section is hinged with the driving piece; one end of the rocker is hinged with the end part of the second section, and the other end of the rocker is hinged with the pin boss; the driving piece can act on bending to enable the rocker to rotate around the pin boss and drive the bottom end of the first supporting rod to slide along the first slideway, and when the included angle between the first supporting rod and the second supporting rod is minimum, the bending is located above the pin boss.
Optionally, the end of the first section is provided with a connecting shaft, the connecting shaft is provided with a roller, and when the end of the first section slides along the first slideway, the roller can roll along the bottom plate.
Optionally, the base is further provided with a rolling plate, and the roller can roll along the rolling plate.
Optionally, a concave notch is formed at one end of the rocker towards the pin seat, shaft holes are formed in two side walls of the concave notch and the pin seat respectively, and the pin seat is arranged in the concave notch and is connected through a pin shaft penetrating through the shaft holes.
Optionally, the device also comprises an upper sliding shaft and a rolling sleeve sleeved outside the upper sliding shaft; the support assemblies on two sides of the support seat are symmetrically arranged, the upper sliding shafts penetrate through the top ends of second support rods of the support assemblies which are symmetrically arranged and can slide along the second slide ways, and the rolling sleeves are located between the two second support rods and are in butt rolling with the support seat.
Optionally, a lower sliding shaft is also included; the lower sliding shaft penetrates through the bottom end of the first supporting rod of the supporting component and the first section of the push rod which are symmetrically arranged, and can slide along the first slideway.
Optionally, reinforcing sleeves sleeved outside the lower sliding shaft are respectively arranged on two sides of the bottom end of the first supporting rod.
Optionally, the base with the supporting seat is equipped with the curb plate respectively, first slide with the second slide is for locating the rectangular hole of curb plate.
Optionally, the device further comprises an unlocking part, which is arranged on the upper end surface of the supporting seat and is used for unlocking the end underframe and the locking of the supporting part.
Drawings
FIG. 1 is a schematic view of a lifting device of a piggyback end chassis in a highest position according to an embodiment of the present invention;
FIG. 2 is a perspective view of FIG. 1;
FIG. 3 is a perspective view of the lifting device in a lowermost position;
FIG. 4 is a schematic structural view of a base;
FIG. 5 is a schematic view of the structure of the support base;
FIG. 6 is a schematic structural view of a push rod;
FIG. 7 is a schematic view of the structure of the rocker;
fig. 8 is a schematic structural view of the first support bar.
In fig. 1-8, the reference numerals are as follows:
71-a base, 711-a first slideway, 712-a pin boss, 713-a rolling plate;
72-supporting seat, 721-second slideway;
731-driving part, 732-locking component, 733-push rod, 7331-first section, 7332-second section, 7333-bending, 7334-V-shaped connecting part, 7335-roller, 734-rocker, 7341-concave notch, 7342-shaft hole;
74-a support assembly, 741-a first support rod, 7411-a reinforcing sleeve, 742-a second support rod;
75-upper sliding shaft, 751-rolling sleeve;
76-lower sliding shaft;
77-unlocking part.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 to 8, fig. 1 is a schematic structural view of a lifting device of an end chassis of a piggyback in a highest position according to an embodiment of the present invention; FIG. 2 is a perspective view of FIG. 1; FIG. 3 is a perspective view of the lifting device in a lowermost position; FIG. 4 is a schematic structural view of a base; FIG. 5 is a schematic view of the structure of the support base; FIG. 6 is a schematic structural view of a push rod; FIG. 7 is a schematic view of the structure of the rocker; fig. 8 is a schematic structural view of the first support bar.
The invention provides a lifting device of an end underframe of a piggyback, which comprises a base 71, a supporting seat 72 and a driving mechanism, wherein two sides of the supporting seat 72 are respectively connected with the base 71 through supporting components 74. Specifically, the base 71 is provided with a first slide 711, the supporting seat 72 is provided with a second slide 721, the supporting component 74 comprises a first supporting rod 741 and a second supporting rod 742 which are arranged in a crossing manner, wherein the top end of the first supporting rod 741 is hinged to the supporting seat 72, the bottom end of the first supporting rod 741 can slide along the first slide 711, the bottom end of the second supporting rod 742 is hinged to the base 71, the top end of the second supporting rod 742 can slide along the second slide 721, and the driving mechanism can act on the supporting component 74 to change the included angle between the first supporting rod 741 and the second supporting rod 742, so that the height of the supporting seat 72 from the base 71 is changed.
When the driving mechanism acts on the supporting component 74 to reduce the included angle between the first supporting rod 741 and the second supporting rod 742, the height of the supporting component 74 is increased, so as to drive the supporting component 72 to rise relative to the base 71, further lift the end chassis of the piggyback towards one end of the supporting component until the center plate of the bogie is not stressed any more, and then the lifting operation of the supporting component can be performed.
In detail, after the piggyback car reaches a loading and unloading yard, after the parking position of the piggyback car is accurately positioned, lifting devices (four lifting devices are respectively arranged at the left side and the right side below end underframes at the front end and the rear end of the supporting part, the lifting devices act to drive the supporting part to lift towards one end of the supporting part by the front end underframes and the rear end underframes, the lifting devices keep stable positions until the bogie core plate is at a position of no longer being stressed, and then the lifting devices for driving the supporting part drive the supporting part to lift, rotate or translate so that the two ends of the supporting part are respectively connected with slope transition devices arranged on the ground, and loading and unloading are facilitated.
The lifting device of the end underframe of the piggyback provided by the embodiment drives the end underframe to lift, has a simple structure, and can stably drive the end underframe to lift when the piggyback is loaded and unloaded.
In the above embodiment, the driving mechanism includes the driving member 731 and the locking member 732, where the driving member 731 is disposed on the base 71 and provides a power source, and acts on the supporting member 74 to change the included angle between the two supporting rods (the first supporting rod 741 and the second supporting rod 742), and when the included angle between the first supporting rod 741 and the second supporting rod 742 is minimized, that is, the supporting seat 72 is lifted to the highest position, the locking member 732 can lock the relative positions of the two supporting rods, that is, keep the state of the supporting member 74 unchanged, so that the height position of the supporting seat 72 is stable, and the supporting seat 72 is prevented from falling due to the sudden failure of the driving member 731, so as to ensure that the lifting device can provide stable support to the end chassis in the use state.
Further, the locking assembly 732 includes a push rod 733 and a rocker 734, and the base 71 is further provided with a pin holder 712, and specifically, the push rod 733 includes a first section 7331, a bent 7333 and a second section 7332 that are sequentially disposed, where an end of the first section 7331 is hinged to a bottom end of the first support rod 741 and can slide along the first slide way 711, the bent 7333 is hinged to the driving member 731, one end of the rocker 734 is hinged to an end of the second section 7332, and the other end of the rocker 734 is hinged to the pin holder 712; the driving piece 731 can act on the bending 7333 to enable the rocker 734 to rotate around the pin holder 712 and drive the bottom end of the first supporting rod 741 to slide along the first slideway 711, and when the included angle between the two parts is minimum, the bending 7333 is just above the pin holder 712.
In detail, the opening of the bending 7333 is downward, the rocker 734 is hinged between the second section 7332 and the pin holder 712, the driving member 731 can act on the bending 7333 and drive the rocker 734 to rotate around the hinge point between the rocker and the pin holder 712, so as to drive the push rod 733 to rotate around the hinge point between the bending 7333 and the driving member 731, and the first section 7331 can drive the first supporting rod 741 to move when rotating around the hinge point, and due to the limitation of the first sliding way 711, the bottom end of the first supporting rod 741 can only slide along the first sliding way 711, so as to realize the change of the included angle between the two supporting rods.
As shown in fig. 2, when the first support rod 741 slides along the first slideway 711 to the minimum angle between the two support rods so that the support seat 72 rises to the highest position, the bending 7333 is just above the pin seat 712, the driving piece 731 is no longer active, at this time, if the driving piece 731 fails to cause the insufficient thrust, the driving effect of the driving piece 731 on the support assembly 74 is removed, the end chassis still continues to press the support seat 72, and the angle between the two support rods tends to increase, because the opening of the bending 7333 is downward and is located directly above the pin seat 712, at this time, the vertically downward pressure cannot move the push rod 733 laterally, so that the rotation of the rocker 734 and the sliding of the first support rod 741 along the first slideway 711 are limited, so that the state of each support assembly 74 can be kept unchanged, that is, the angle between the two support rods is unchanged, the height of the support seat 72 is unchanged, and the stability is better.
By the above arrangement of the locking device, when the driving piece 731 makes the supporting seat 72 rise to the highest position through the supporting component 74, the automatic locking between the supporting components 74 can be realized, in this state, the vertical force cannot change the state of each supporting component 74, and only when the end chassis needs to be lowered, the driving piece 731 provides a reverse acting force to make the push rod 733 transversely move to the position that the bending 7333 is separated from the pin seat 712, the unlocking can be realized, and the bottom end of the first supporting rod 741 is driven to reversely move along the first slideway 711 until the supporting seat 72 is lowered to the lowest state (as shown in fig. 3). The locking assembly 732 can realize locking and unlocking while realizing lifting of the supporting seat 72, does not need to additionally provide a locking component, can simplify the whole structure and simplify the operation, and ensures the stability and the operation convenience of the whole structure.
Specifically, as shown in fig. 1-3, in this embodiment, the driving member 731 is a hydraulic cylinder, a piston rod of the hydraulic cylinder is hinged to the bent 7333 of the push rod 733, two sides of the supporting seat 72 are respectively connected to the base 71 through the supporting components 74, and the hydraulic cylinder acts on the bottom end of the first supporting rod 741 of one of the supporting components 74 to realize the overall lifting of all the supporting components 74, so that the stability is good. Of course, in the present embodiment, the power source may be provided by a motor, a gear and a rack, or a motor, a screw and a nut, which is not particularly limited herein.
In the above embodiment, the end of the first section 7331 of the push rod 733 is further provided with a connecting shaft, the connecting shaft is provided with a roller 7335, and when the driving member 731 acts on the bending 7333 to rotate the push rod 733 around the hinge point between the bending 7333 and the driving member 731, the end of the first section 7331 slides along the first slide 711, and at this time, the roller 7335 can roll along the base 71. The end of the first section 7331 of the push rod 733 can be in contact with the base 71 through the roller 7335, so that when the end of the first section 7331 slides along the first slideway 711, the roller 7335 rolls along the base 71, friction and abrasion between the first section 7331 and the base 71 can be reduced while resistance is reduced, and service life is guaranteed. Specifically, as shown in fig. 6, the push rod 733 may include two V-shaped connecting members 7334 disposed in parallel, and a connecting shaft is further disposed between the ends of the two V-shaped connecting members 7334 facing the first section 7331, or the ends of the first section 7331 may be further provided with a groove, and the connecting shaft is disposed between two side walls of the groove.
Further, as shown in fig. 4, the base 71 is further provided with a rolling plate 713, and the rollers 7335 can roll along the rolling plate 713, or in this embodiment, the rollers 7335 may be configured to roll directly along the upper surface of the base 71, and the rolling plate 713 may be replaced after being worn, so as to ensure the service life of the base 71.
In the above embodiment, as shown in fig. 7, the rocker 734 has a concave notch 7341 at one end facing the pin holder 712, and the two side walls of the concave notch 7341 and the pin holder 712 have shaft holes 7342, respectively, and the pin holder 712 is disposed in the concave notch 7341 and rotatably connected by a pin shaft passing through the shaft holes 7342. Alternatively, in this embodiment, one end of the rocker 734 may be disposed at one side of the pin holder 712 and connected by a pin, and the rocker 734 is provided with a concave notch 7341 and the pin holder 712 is disposed in the concave notch 7341, so that the connection between the two is more stable, and the situation of skew jamming is avoided.
In the above embodiment, the lifting device further includes an upper sliding shaft 75 and a rolling sleeve 751 sleeved outside the upper sliding shaft 75, wherein two sides of the supporting seat 72 are connected with the base 71 through symmetrically arranged supporting components 74, the upper sliding shaft 75 passes through top ends of second supporting rods 742 of the symmetrically arranged supporting components 74 and can slide along the second sliding way 721, and the rolling sleeve 751 is located between the two second supporting rods 742 and is in abutting rolling contact with the supporting seat 72. That is, the supporting force of the supporting assembly 74 to the supporting seat 72 is ensured by the rolling sleeve 751 between the supporting assembly 74 and the supporting seat 72, so that the stability is good, and meanwhile, the rolling sleeve 751 is arranged between the two second supporting rods 742, and can limit the two second supporting rods to prevent the distance between the two second supporting rods from changing to affect the lifting of the end underframe.
Further, the lifting device further includes a lower sliding shaft 76, where the lower sliding shaft 76 passes through the bottom end of the first supporting rod 741 of the symmetrically disposed supporting assembly 74 and the first section 7331 of the pushing rod 733, and can slide along the first slideway 711. The bottom end of the first support rod 741 is slidable along the first slide 711 by the arrangement of the lower slide shaft 76, and the bottom end of the first support rod 741 is hinged to the end of the first section 7331 of the push rod 733, thereby simplifying the overall structure.
Further, reinforcing sleeves 7411 are respectively arranged at two sides of the bottom end of the first support rod 741 and sleeved outside the lower sliding shaft 76. The setting of this reinforcement sleeve 7411 can increase the structural strength of the bottom of first bracing piece 741, still can carry out spacingly to the bottom of this first bracing piece 741, reduces its both sides respectively with the interval between the first end of base 71 and push rod 733, avoids taking place the condition of skew, and stability is good.
In the above embodiment, the base 71 and the supporting seat 72 are respectively provided with side plates, and the first slide 711 and the second slide 721 are elongated holes provided in the side plates. Alternatively, in the present embodiment, the first slide 711 and the second slide 721 may be configured as slide rails or slide grooves, and the structure of the elongated holes is simpler, so as to simplify the manufacturing process.
In the above embodiment, as shown in fig. 4, the lifting device further includes an unlocking portion 77, where the unlocking portion 77 is provided on the upper end surface of the supporting seat 72, for unlocking the lock between the end chassis and the supporting portion. Specifically, the end underframe and the supporting part are locked by the locking structure, the situation that the end underframe and the supporting part are separated in the driving process is avoided, when the piggyback car is accurately positioned in the loading and unloading yard, the lifting device is arranged below the end underframe, so that the unlocking part 77 on the upper end surface of the supporting seat 72 is aligned with the locking structure, the supporting seat 72 is continuously lifted to enable the unlocking part 77 to be matched with the locking structure, the locking effect of the locking structure is released in the process of lifting the end underframe and the supporting part, and then the supporting part is lifted by the lifting device. Alternatively, in the present embodiment, the locking function between the end chassis and the supporting portion may be unlocked by an additionally provided unlocking device, and when the unlocking portion 77 is provided at the top end of the supporting seat 72, the overall structure may be simplified and the operation may be simplified.
In addition, when the supporting part of the piggyback car is separated from the body through rotation and then loading and unloading are performed, the lifting device provided by the embodiment can also be used for providing a positioning rotating shaft for the supporting part, the lower end surface of the supporting part is provided with a positioning shaft hole or a pit matched with the positioning rotating shaft, namely, the lifting device is additionally provided, the top end of the supporting seat 72 is provided with the positioning rotating shaft and is placed below the supporting part, the positioning rotating shaft rotates the positioning shaft hole oppositely, after the lifting device lifts the supporting part to a preset height, the lifting device provided by the embodiment lifts the positioning rotating shaft to be matched with the shaft hole or the pit, and then the lifting device drives the supporting part to rotate around the positioning rotating shaft by a preset angle and is connected with the slope transition device, so that loading and unloading operations can be performed. Or, still can provide the rotation center for the portion of holding in the palm through the locating shaft that additional setting can go up and down, and provide the equipment that can reduce the present place through the lifting means that this embodiment provided, can avoid holding in the palm the portion in the rotation in-process, the location pivot is because driving piece 731 breaks down and leads to its condition that descends, and the flexibility is good and stability is good.
In addition, in this embodiment, the hinge connection between the above components may be a pin or round pin connection, and the pin or round pin may be limited by a washer or cotter pin. The two support rods are arranged in a crossed manner and can rotate around the crossing points respectively, the two support rods can be connected through the pin shaft or the round pin, or the pin shaft can be fixedly arranged on one support rod, the other support rod is provided with a pin hole, and the pin shaft penetrates through the pin hole and is limited through the gasket and the cotter pin.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (9)
1. The lifting device of the end underframe of the piggyback vehicle is characterized by comprising a base (71), a supporting seat (72) and a driving mechanism, wherein two sides of the supporting seat (72) are respectively connected with the base (71) through a supporting component (74);
the base (71) is provided with a first slideway (711), and the supporting seat (72) is provided with a second slideway (721);
the support assembly (74) comprises a first support rod (741) and a second support rod (742) which are arranged in a crossing manner, the top end of the first support rod (741) is hinged with the support seat (72), the bottom end of the first support rod (741) can slide along the first slide way (711), the bottom end of the second support rod (742) is hinged with the base (71), and the top end of the second support rod (742) can slide along the second slide way (721);
the drive mechanism is capable of acting on the support assembly (74) to vary the angle between the first support bar (741) and the second support bar (742);
the driving mechanism comprises a driving piece (731) and a locking assembly (732), wherein the driving piece (731) is arranged on the base (71) and can act on the supporting assembly (74) to change the included angle between the first supporting rod (741) and the second supporting rod (742), and the locking assembly (732) can lock the relative positions of the first supporting rod (741) and the second supporting rod (742) when the included angle between the first supporting rod (741) and the second supporting rod (742) is minimum;
the locking assembly (732) comprises a push rod (733) and a rocker (734), and the base (71) is further provided with a pin seat (712);
the push rod (733) comprises a first section (7331), a bending section (7333) and a second section (7332) which are sequentially arranged, the end part of the first section (7331) is hinged with the bottom end of the first support rod (741) and can slide along the first slideway (711), and the bending section (7333) is hinged with the driving piece (731);
one end of the rocker (734) is hinged with the end of the second section (7332), and the other end is hinged with the pin boss (712);
the driving piece (731) can act on the bending piece (7333) to enable the rocker (734) to rotate around the pin boss (712) and drive the bottom end of the first supporting rod (741) to slide along the first slideway (711), and when the included angle between the first supporting rod (741) and the second supporting rod (742) is minimum, the bending piece (7333) is located above the pin boss (712).
2. The lifting device according to claim 1, characterized in that the end of the first section (7331) is provided with a connecting shaft, the connecting shaft is provided with a roller (7335), and the roller (7335) can roll along the base (71) when the end of the first section (7331) slides along the first slide way (711).
3. Lifting device according to claim 2, characterized in that the base (71) is further provided with a roller plate (713), the roller (7335) being capable of rolling along the roller plate (713).
4. A lifting device according to any one of claims 1-3, characterized in that the rocker (734) is provided with a recess (7341) at its end facing the pin holder (712), and that the two side walls of the recess (7341) and the pin holder (712) are provided with shaft holes (7342) respectively, and that the pin holder (712) is provided in the recess (7341) and is connected by means of a pin shaft passing through the shaft holes (7342).
5. A lifting device according to any one of claims 1-3, further comprising an upper sliding shaft (75) and a roller (751) arranged around the upper sliding shaft (75);
the supporting components (74) on two sides of the supporting seat (72) are symmetrically arranged, the upper sliding shaft (75) penetrates through the top ends of second supporting rods (742) of the symmetrically arranged supporting components (74) and can slide along the second sliding way (721), and the rolling sleeve (751) is located between the two second supporting rods (742) and is abutted to the supporting seat (72) to roll.
6. The lifting device according to claim 5, further comprising a lower sliding shaft (76);
the lower sliding shaft (76) passes through the bottom end of a first supporting rod (741) of the supporting assembly (74) and a first section (7331) of the pushing rod (733) which are symmetrically arranged, and can slide along the first slideway (711).
7. Lifting device according to claim 6, characterized in that the two sides of the bottom end of the first support bar (741) are respectively provided with a reinforcing sleeve (7411) sleeved outside the lower sliding shaft (76).
8. A lifting device according to any one of claims 1-3, wherein the base (71) and the support (72) are provided with side plates, respectively, and the first slide way (711) and the second slide way (721) are elongated holes provided in the side plates.
9. A lifting device according to any one of claims 1-3, further comprising an unlocking portion (77) provided at an upper end surface of the support base (72) for unlocking the locking of the end chassis and the bracket.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010131395.4A CN111115501B (en) | 2020-02-28 | 2020-02-28 | Lifting device of end underframe of piggyback vehicle |
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| CN202010131395.4A CN111115501B (en) | 2020-02-28 | 2020-02-28 | Lifting device of end underframe of piggyback vehicle |
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| CN111115501A CN111115501A (en) | 2020-05-08 |
| CN111115501B true CN111115501B (en) | 2023-09-26 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113845059A (en) * | 2021-10-13 | 2021-12-28 | 东营天润石化科技有限公司 | Hydraulic oil lifting device control system |
| CN115849241A (en) * | 2022-11-26 | 2023-03-28 | 陈涛涛 | Automobile shear type lifter |
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| JP4433941B2 (en) * | 2004-08-26 | 2010-03-17 | 株式会社ダイフク | Transport device |
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| DE20316905U1 (en) * | 2003-11-04 | 2005-03-17 | Expert Maschb Gmbh | Lifting table with scissors type support arms driven by a cam acting directly on one support arm |
| DE202013104014U1 (en) * | 2013-09-06 | 2013-09-12 | Meifu Liu | Hoist with self-locking |
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| CN111115501A (en) | 2020-05-08 |
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