58results about "Mobile jacks" patented technology

The invention belongs to the technical field of lifting tools, and particularly discloses a lifting device oil way system, a lifting device, a jack, a pressing machine and a crane. The oil way system of the lifting device comprises a lifting oil cylinder, an oil tank, a first oil inlet way, a second oil inlet way and an oil return pipeline, the first oil inlet path is an oil inlet path of the gear pump assembly; and the second oil inlet path is an oil inlet path of the plunger pump assembly. When the lifting device is in the no-load or low-pressure condition, the gear pump assembly can rapidly pump in much hydraulic oil with small pressure so that the lifting device can rapidly ascend or descend, the defect that in the prior art, the displacement speed of a hydraulic lifting pump is low under the no-load or low-pressure condition is overcome, and the user experience is improved; when the hydraulic lifting pump is in a high-pressure condition, the plunger pump assembly can pump high-pressure hydraulic oil into the lifting oil cylinder so that the lifting oil cylinder can ascend or descend slowly, the lifting device can move slowly, and the normal use requirement of a user is met.

The disclosure discloses an oil circuit system, a lifting device, an electric jack, a press, a crane, and a tire mounting / dismounting and transport apparatus. The oil circuit system comprises a lifting oil cylinder, the tank, the first oil feed line, the second oil feed line, the oil inlet / outlet line, the pressure relief line, the oil return line, the first valve, the second valve; the first oil feed line is the gear pump assembly oil feed line; and the second oil feed line is the plunger pump assembly oil feed line. Under no-load or low-pressure conditions of the lifting device, the gear pump assembly can quickly pump a larger volume of low-pressure hydraulic oil, enabling quick lifting or lowering of the lifting device. Under high-pressure conditions, the plunger pump assembly can quickly pump higher pressure hydraulic oil to the lifting oil cylinder to enable slow lifting or lowering.

A floor service jack includes a battery and a control panel provided at a distal end of a handle of the jack for electro-mechanically or hydraulically controlling a lift arm to raise and lower a vehicle for servicing without exposure to an undercarriage of the vehicle to replace the battery or to operate the control panel.

The present disclosure relates to a data transmission device for transmitting data between at least two lifting platforms 10 of a lifting system 100, and to a lifting system 100, in particular for lifting vehicles, comprising at least two lifting platforms 10, in particular at least two mobile lifting platforms.

A lift device includes a lift adapter adapted to engage and support various vehicle components. The elevator adapter includes a plurality of support arms, each support arm being rotatably adjustable relative to a support body of the elevator adapter. A plurality of bracket assemblies mount an interface adapter to the support arm, the interface adapter engaging and securing the vehicle component during the active lift service. The elevator adapter may engage and secure various vehicle components using a single type of interface adapter or a combination of various types of interface adapters. The elevator adapter can be detached from an associated elevator to maximize operational flexibility of the elevator and the elevator adapter while also maximizing compatibility with various components.

Lifting device for vehicles, in particular agricultural machinery, trucks and / or construction machinery, comprising: at least a basic frame (31) with a mounting carrier (32) for wheel forks (33a, 33b) and a lifting column (34); at least two support feet (35a, 35b), wherein the support feet are removable and adjustable with respect to their relative position to the base frame (31); and at least one lifting carriage (36) which is movable along the lifting column (34), wherein the feet (35a, 35b) are mounted in such a way as to allow for adjustment of the lateral distance (d1) between the at least two feet (35a, 35b).

The present disclosure relates to a cart adapted to support an automotive jack bracket via a shelf supported by a plurality of wheels coupled to the shelf using cantilevers. The cantilever exhibits a resilient behavior in response to a load received by the shelf. In one embodiment, the cantilevers exhibit elastic behavior via the joints. In another embodiment, the cantilevers exhibit elastic behavior via spring bolts.

To provide a tire lifter device provided with a work table in which a gripping part gripped by an operator is provided at a side position of the work table, and a tire lifting operation part for lifting a tire is provided on the gripping part, and which can improve safety of tire detachment operation and so on in such a manner that even if an object placed on the work table unexpectedly contacts the lifting operation part, a tire holding part does not move vertically.SOLUTION: In a tire lifter device, a gripping handle part 42 gripped by an operator is provided at a side position of a work table 4, a descent SW 62 and an ascent SW 63 for operating a lifting mechanism part are provided on the gripping handle part 42, and an open SW 61, which permits input of the descent SW 62 and the ascent SW 63, is provided. The device comprises a motor control unit which so controls that operations of the descent SW 62 and the ascent SW 63 become effective only during operation of the open SW 61.SELECTED DRAWING: Figure 7

A lifting assembly for lifting a metal cabinet that has parallel sheet metal walls along its base. The lifting system has a floor jack with wheels and a lift arm. The lift arm supports a lifting saddle. The lifting saddle contacts and lifts the metal cabinet. The lifting saddle has a base plate that is coupled to the lift arm. Adjustable crossbars are mounted to the base plate. The crossbars terminate with slotted heads. The slots are sized to receive sheet metal walls. The slots prevent the sheet metal walls from buckling in the area of contact. The crossbars are adjusted in length to set the slotted heads at a distance apart equal to that of the parallel sheet metal walls. The lifting saddle is maneuvered under the sheet metal walls, wherein the sheet metal walls are received within the slotted heads on the crossbars.

The utility model discloses an airplane wheel jack high and low plunger integrated pile-up valve assembly, which relates to the technical field of airplane wheel jacks, and comprises a valve body and an oil tank, a shaft rod penetrates through the top of the valve body, and the top of the shaft rod is connected with a rocking seat; a sleeve is fixed to one side of the rocking seat, an ejector block is connected into the sleeve through a spring, guide rods penetrate through the outer surface and the back of the ejector block, and guide grooves are formed in the outer surface and the back of the sleeve. The comprehensive integrated valve assembly integrating the high plunger and the low plunger is a valve body assembly integrating the high plunger hand pump, the low plunger hand pump, the one-way valve, the overflow valve, the throttling valve and the reversing valve, and in order to meet the requirements of the high plunger hand pump and the low plunger hand pump, the high plunger, the low plunger and the one-way valve are connected in series for use; the use space of the valve body is reduced, the use space of the jack and the oil tank is increased, the valve body assembly and the oil tank are overlapped, meanwhile, the boundary dimension of the jack is reduced, and the requirement for use of the airplane wheel jack in a narrow space can be better met.

A plurality of portable lifts are dynamically configured to form a lift system for raising and lowering of vehicle. Each portable lift is added to the lift system and communicates wirelessly with a centralized control module. Some systems guide the user through a sequenced association of lifts in particular relative positions around the vehicle, while others use automatic position-detection techniques to determine those relative positions without explicit user input. Some systems allow definition of subsystems that can be operated together. Flexible controls may selectively allow operation of individual lifts, pairs or subsystems of lifts, or the full system at once. Controls on each lift may communicate commands for other lifts by way of the centralized control module.

The trailer jack comprises a jack body and a quick adjusting mechanism, the jack body comprises an outer cylinder and an inner cylinder which are in transmission connection through a driving mechanism, a plurality of adjusting holes are formed in the outer cylinder in the vertical direction, and supporting parts corresponding to the adjusting holes are arranged on the inner wall of the outer cylinder; the supporting part is used for deepening the depth of the adjusting hole; the quick adjusting mechanism comprises an adjusting seat and a pin lock assembly, the adjusting seat is arranged on the outer cylinder in a sliding mode and used for being connected with a frame, the pin lock assembly is arranged on the adjusting seat, and the pin lock assembly is matched with the adjusting hole to be used for fixing the position of the adjusting seat on the outer cylinder. The lifting height of the frame can be quickly adjusted through the quick adjusting structure, the supporting part is arranged at the corresponding position of the adjusting hole to disperse stress concentrated on the adjusting hole, and the service life is prolonged.

A truss transporting and leveling apparatus (TTLA) that provides a mechanism by which & single person can quickly and easily raise a truss structure and then transport, move and level the truss structure to a required or desired location. The preferred embodiment of the TTLA is comprised of the following major elements: a rear panel, a right side panel, a left side panel, a front panel, leveling mechanism, mobility mechanism, and at least one mounting bolt. The mounting bolt(s) are inserted through an opening on a truss structure, thereby securing the bolt to the truss structure. A nut secures the bolt within a side-oriented T-shape opening while allowing the area of the bolt between flanges to move within horizontal and vertical sections of the opening. A bolt is initially forced from the horizontal section upward into the upper end of the vertical section and then when the jack and upper support platform have completely traveled, the bolt drops downward into the lower end of the vertical section, thereby maintaining the upper support platform at the elevated position.

A wheel dolly capable of lifting the wheel of a vehicle in response to the cycling of an actuation lever is described. The wheel dolly allows a user to select an operational mode wherein the starting height of the actuation lever is reduced. With the lower starting height, a user may be able to actuate the wheel dolly with less force and may find using the wheel dolly more comfortable.

A forklift-type towing vehicle comprises a vehicle body (1), a support plate (5), a lifting device (6), a front fork assembly, a rear fork assembly, a front fork driving assembly, and a rear fork driving assembly. The vehicle body (1) is movably arranged in a passage (17). The support plate (5) is arranged above the vehicle body (1). The lifting device drives the support plate to move up and down. The front fork assembly comprises two front forks (9) arranged on the support plate (5) and capable of rotating horizontally. The rear fork assembly comprises two rear forks (10) arranged on the support plate (5) and capable of rotating horizontally. The two front forks (9) are respectively arranged at two sides of a center line of the passage (17). The two rear forks (10) are respectively arranged on the two sides of the center line of the passage (17). The two front forks (9) and the two rear forks (10) can extend to or retract from two sides of the support plate (5). The front fork driving assembly comprises a front transmission member (12) and a front power device (13) arranged on the support plate (5), and the front power device drives the front transmission member (12) to move horizontally along a straight line, such that the two front forks (9) rotate. The rear fork driving assembly comprises a rear transmission member (15) and a rear power device (16) arranged on the support plate (5), and the rear power device (16) drives the rear transmission member (15) to move horizontally along a straight line, such that the two rear forks (10) rotate.

A wheel dolly is described for use in lifting the wheel of a vehicle and supporting the wheel on casters. The wheel dolly includes a motion conversion mechanism operative to convert rotational motion at a drive shaft into relative linear motion of two bodies that act to lift the wheel. The motion conversion mechanism can include a worm gear and lead screws. Actuation of the wheel dolly may be accomplished using a rotary power tool such as a drill or impact wrench so that the wheel dolly becomes power assisted.

A saddle and removable extension for a floor jack having a storage assembly is disclosed. A saddle and extension assembly of the floor jack includes a jack saddle fastened to a mounting bracket of a lifting arm and an extension having a flange and an extension saddle. To withstand off-center loading conditions when the floor jack is in an upper extended position, at least one extension fastener is operable to engage with at least one extension bore by fastening the extension to the jack saddle and the mounting bracket of the lifting arm. A storage assembly is provided on a body of the floor jack to house the extension during storage or transport.

The current invention is a new design for a foldable hardtop frame lifter and holding cart. It has a wheeled base attached to a lifting embodiment. The base has a plurality of wheels in the preferred embodiment. The device also has a lifting and lowering mechanism which is attached to base and to the lifting embodiment. In one embodiment, the lifting embodiment is a set of adjustable brackets. In other embodiment, the lifting embodiment is a frame with a plurality of clamps that clamp on the sides of the hardtop.

This application relates to the field of horizontal jack technology, and in particular to a support structure for a horizontal jack, comprising a base frame, a lifting cylinder, a return valve, a lifting arm, and a transmission plate. The transmission plate is connected to the lifting cylinder. A protective base is fixed on the base frame, and a first telescopic rod is hinged to the protective base. A second telescopic rod slides coaxially within the first telescopic rod, and the other end of the second telescopic rod is hinged to the transmission plate. The first and second telescopic rods can extend as the lifting arm is raised, and the first and second telescopic rods are mutually locked in multiple positions along the extension direction. Simultaneously, the first telescopic rod is also provided with an unlocking mechanism to unlock the connection between the first and second telescopic rods. This application utilizes auxiliary mechanical support to provide protection for the lifting arm during its raised state, thereby improving the safety hazard caused by ineffective support in the event of hydraulic failure during lifting.

A tow dolly lift having a tubular member that is connected to a hydraulic system configured to lift a vehicle. The tubular member includes an extendable arm and a platform body, the hydraulic system includes a pair of hydraulic lifting pistons and a power source, and the tubular member is operably connected to the hydraulic system. In operation, the tubular member raises the vehicle upwardly and extends outwardly from the tow dolly to lower and extend under the vehicle. The tubular member then lifts the vehicle upward onto the tow dolly under hydraulic power. In this way, the tow dolly lift automatically secures the vehicle to the tow dolly. The tow dolly lift is assembled into a tow dolly lift or be a standalone unassembled tow dolly lift kit sold as an aftermarket item.

The utility model discloses a railway vehicle marshalling lifting tool, which relates to the technical field of railway vehicle marshalling, and comprises at least one lifting unit, the lifting unit comprises a lifting device and a buffer pad, the top of the lifting device is connected with a supporting block, and the buffer pad is fixedly connected to one end, far away from the lifting device, of the supporting block. The supporting block is used for supporting a car coupler or a windshield of the railway vehicle, the buffering cushion is of an elastic structure, and the lifting device ascends or descends to lift or lower the car coupler or the windshield of the railway vehicle; the buffer pad of the elastic structure can effectively absorb impact force generated when the coupler or the windshield is placed, the situation that the surface of the coupler or the windshield is scratched due to rigid contact is avoided, the grabbing force between the coupler or the windshield and the buffer pad is enhanced, the sliding risk is reduced, and the height of the coupler or the windshield is adjusted by controlling the lifting device to ascend or descend. The heights of couplers or windshields of two adjacent sections of railway vehicles in the marshalling coupling process of the railway vehicles are consistent, the couplers or the windshields can be connected conveniently, operation is easy, and use is convenient.

An oil circuit system applicable for a lifting device comprising: a lifting oil cylinder (110), a tank (800), a first oil feed line (252), a second oil feed line (253), an oil inlet / outlet line (254), a pressure relief line (255), an oil return line (256), a first valve, and a second valve; wherein the first valve is connected with the first oil feed line (252), the pressure relief line (255), and the oil return line (256); the second valve is connected with the first oil feed line (252) and the oil return line (256); the oil inlet / outlet line (254) has one end connected with the first oil feed line (252) and the second oil feed line (253), and another end connected with the lifting oil cylinder (110); in a first operating condition of the lifting oil cylinder (110), both the first oil feed line (252) and the second oil feed line (253) supply hydraulic oil to the lifting oil cylinder (110); in a second operating condition of the lifting oil cylinder (110), the second oil feed line (253) supplies the hydraulic oil to the lifting oil cylinder (110), the hydraulic oil within the first oil feed line (252) flows to the oil return line (256) via the second valve and returns to the tank (800); and an oil pressure within the lifting oil cylinder (110) in the second operating condition is greater than an oil pressure within the lifting oil cylinder (110) in the first operating condition.

A wheel dolly capable of lifting the wheel of a vehicle in response to the cycling of an actuation lever is described. The wheel dolly allows a user to select an operational mode wherein the starting height of the actuation lever is reduced. With the lower starting height, a user may be able to actuate the wheel dolly with less force and may find using the wheel dolly more comfortable

A portable relocation system for relocating an inoperable vehicle may include a plurality of relocation modules configured to be positioned at designated jacking points of the inoperable vehicle. Each relocation module may include a chassis, a hydraulic jack mounted to the chassis, a plurality of mecanum wheels mounted to the chassis, and a local computer configured to control the hydraulic jack and mecanum wheels. The hydraulic jack may lift the inoperable vehicle a predetermined distance relative to a ground surface. The mecanum wheels may enable omnidirectional movement. The system may include a central control unit communicatively coupled to each local computer. A wireless human-machine interface may communicate with the central control unit. The central control unit may synchronize lift and omnidirectional movement by exchanging real-time data and control commands with each local computer.

A cart suitable to support an automotive jackstand via a shelf, the shelf supported by a number of wheels coupled to the shelf using a cantilever. The cantilever exhibits elastic behavior in response to loads received by the shelf. In one embodiment, the cantilevers exhibit elastic behavior via a joint. In another embodiment, the cantilevers exhibit elastic behavior via a spring bolt.

A system for positioning a hitch rack for attachment to a vehicle hitch receiver, comprising: a body; a transportation base coupled to the body, the transportation base having a plurality of wheel assemblies that facilitate rolling of the system along a ground surface and a support member coupled to the body, the support member configured to receive and support the hitch rack; the system having an adjusting gear mechanism coupled to the support member and the body, the adjusting gear mechanism configured to adjust a height of the support member relative to the transportation base.

The invention relates to the technical field of jack manufacturing, in particular to an electro-hydraulic driving type horizontal jack. The crane boom and the power unit both take the rack as a mounting base, and the power unit is hinged to the crane boom. The instruction sending assembly is provided with an independent power supply and sends an instruction signal to the control mainboard through a wireless communication protocol. And the control mainboard and the power unit are matched and are electrically connected with the power supply unit. The control mainboard has a standby response state and an instruction execution state; when a lifting / descending control signal of the instruction sending assembly is received, the control mainboard is switched from the standby response state to the instruction execution state; and when the power unit completes the lifting action or does not receive a new instruction overtime, returning to the standby response state from the instruction execution state. Due to the wireless control design, the traditional physical cable connection design is abandoned; and by means of a function locking mechanism of the instruction sending assembly, the mistaken touch risk in a non-operation state is effectively avoided, and the energy consumption of an independent power supply is reduced.