CN218491366U

CN218491366U - Sideslip structure

Info

Publication number: CN218491366U
Application number: CN202122130206.4U
Authority: CN
Inventors: 王妮; 刘汉利; 李金翰; 侯永杰; 陈洪毅
Original assignee: Sino Italian Taida Yingkou Garage Equipment Co ltd
Current assignee: Sino Italian Taida Yingkou Garage Equipment Co ltd
Priority date: 2021-09-06
Filing date: 2021-09-06
Publication date: 2023-02-17
Anticipated expiration: 2031-09-06

Abstract

The utility model provides a structure that sideslips belongs to the machine of lifting technical field of motor vehicle, especially relates to a structure that sideslips. The utility model provides a structure that sideslips that excellent in use effect. The side-slipping structure of the utility model comprises a side-slipping bottom plate assembly (25-1), which is characterized in that the side-slipping bottom plate assembly (25-1) is fixed on the main table surface of the lifting machine by screws through holes at four corners; the side sliding plate (25-5) is inserted into a hole on the corner of the side sliding bottom plate assembly (25-1) through a fixed pin assembly (25-6) for fixation, and the fixed pin assembly (25-6) is connected with the main table top through a clamping plate (25-7), a screw (25-9) and a plastic-coated steel wire rope (25-8).

Description

Sideslip structure

Technical Field

The utility model belongs to the technical field of the machine of lifting of motor vehicle, especially, relate to a structure of sideslipping.

Background

The lifting machine mainly realizes the parallel synchronous motion of two table tops through the double cylinders of the main oil cylinder and the auxiliary oil cylinder which are connected in series synchronously, and lifts the vehicle to be maintained.

The shearing type lifting machines on the market are various in variety, the demand of the ultrathin large shearing type lifting machine is increased year by year due to the fact that the ultrathin large shearing type lifting machine is suitable for ground surface installation, small in occupied area (short in an approach bridge for getting on a train) and suitable for being used on multiple floors, and requirements for safety and reliability of the machine are higher and higher. This requires that the product be continuously upgraded.

SUMMERY OF THE UTILITY MODEL

The utility model discloses be exactly to above-mentioned problem, provide a structure that sideslips that excellent in use effect.

In order to realize the purpose, the utility model adopts the following technical proposal that the side-slipping structure of the utility model comprises a side-slipping bottom plate assembly (25-1), and is characterized in that the side-slipping bottom plate assembly (25-1) is fixed on the main table top of the lifting machine by screws through holes at four corners of the side-slipping bottom plate assembly;

the side sliding plate (25-5) is inserted into a hole on the corner of the side sliding bottom plate assembly (25-1) through a fixed pin assembly (25-6) for fixation, and the fixed pin assembly (25-6) is connected with the main table top through a clamping plate (25-7), a screw (25-9) and a plastic-coated steel wire rope (25-8).

As a preferred scheme, the middle part of the side sliding plate (25-5) of the utility model is provided with a hole, a screw (25-12) passes through the hole, a bottom plate assembly (25-1) and a side sliding block (25-11) are screwed on a side sliding pin shaft (25-10), the bottom plate assembly (25-1) is provided with a square frame (25-1-2) with a shoulder, and the side sliding block (25-11) is arranged in the square frame (25-1-2);

the side-slipping pin shaft (25-10) penetrates through a strip-shaped hole in the side-slipping sliding block (25-11), the lower ends of the two sides of the side-slipping sliding block (25-11) extend outwards to form a stop block (25-50), the inner wall of the upper end of the shoulder is provided with a baffle plate (25-13) extending towards the middle part, and the upper end face of the stop block (25-50) and the lower end face of the baffle plate are matching faces.

Secondly, be equipped with sideslip sand rack (25-2) on sideslip bottom plate closes piece (25-1), be provided with nylon ball (25-3) on sideslip sand rack (25-2) and place the hole, sideslip sand rack (25-2) set up between side sliding plate (25-5) and sideslip bottom plate closes piece (25-1), be provided with annular (25-40) on sideslip bottom plate closes piece (25-1), be provided with nylon ball (25-3) in annular (25-40).

In addition, the side-slipping sand racks (25-2) are four, and are transversely arranged, and each side-slipping sand rack (25-2) is fixed on the side-slipping bottom plate assembly (25-1) through 2 screws (25-4).

The utility model has the advantages of simple structure and convenient operation.

The side sliding plate (25-5) of the utility model is inserted into the holes on the corners of the side sliding bottom plate assembly (25-1) through the fixed pin assembly (25-6) for fixation, and the fixed pin assembly (25-6) is connected with the main table surface through the clamping plate (25-7), the screw (25-9) and the plastic-coated steel wire rope (25-8); the connection is convenient and reliable.

The utility model discloses plastic-coated steel wire rope (25-8) is used for preventing that fixed closing member (24-14) from losing, takes fixed closing member (25-6) out before doing the four-wheel location when treating the vehicle to open on the machine of lifting.

Drawings

The present invention will be further described with reference to the accompanying drawings and the following detailed description. The scope of protection of the present invention is not limited to the following description.

Fig. 1 is the side-slip and sand-rack structure diagram of the utility model.

Figure 2 is the side-slip and sand rack structure sectional view of the utility model.

Fig. 3 is a partial cross-sectional view taken along line M at baffle (25-13) in fig. 1.

Fig. 4 is a partial cross-sectional view taken along the line N at the baffle (25-13) of fig. 1.

Fig. 5 is a view from direction K of fig. 1.

Fig. 6 is a side-sliding sand rack structure diagram of the utility model.

Figure 7 is an exploded view of the side-sliding sand rack of the present invention.

Fig. 8 is an overall layout diagram of the lifting machine of the present invention.

Fig. 9 is an enlarged view of the portion N of fig. 8.

FIG. 10 is an enlarged view of the portion N of FIG. 8 with the inner arm removed.

Fig. 11 is a structural view of the corner plate of the present invention.

Fig. 12 is a cross-sectional view of the corner plate of the present invention.

Fig. 13 is an exploded view of the corner plate of the present invention.

Fig. 14 is a secondary lifting structure diagram of the present invention.

Fig. 15 is an enlarged view of a portion a of fig. 14.

Fig. 16 is an enlarged view of a portion B of fig. 14.

Fig. 17 is a structure view of the rack safety lock of the present invention.

Fig. 18 is an exploded view of the rack safety lock of the present invention.

Fig. 19 is a lock tooth structure diagram of the rack safety lock of the present invention.

Fig. 20 is a structural view of the power-assisted claw of the present invention.

FIG. 21 is a structural diagram of a cylinder of the lift truck according to the present invention.

Fig. 22 is an enlarged view of a portion C of fig. 21.

Fig. 23 is a structural diagram of a cylinder guide sleeve of the lift of the present invention.

Fig. 24 is a schematic diagram of the hydraulic system of the lifting machine of the present invention.

Fig. 25 is a schematic structural view of a relevant part of the lock plate of the present invention.

In the figure, 1 is an oil filter core, 2 is a gear pump, 3 is a plug-in manual pump, 4 is a one-way valve, 5 is a pressure gauge, 6 is a master electromagnetic directional valve, 7 is a slave electromagnetic directional valve, 8 is a split overflow valve, 9 is an electromagnetic unloading valve, 10 is a pressure compensation throttle valve, 11 is a motor, 12 is a first oil cylinder (master main oil cylinder), 13 is a second oil cylinder (master auxiliary oil cylinder), 14 is a first auxiliary oil cylinder (left auxiliary oil cylinder), 15 is a second auxiliary oil cylinder (right auxiliary oil cylinder), 16 is a slave main oil cylinder, 17 is a slave auxiliary oil cylinder, 18 is a one-way throttle valve, 19 is an explosion-proof valve, 20 is a base, 21 is an outer support arm, 22 is a lifting platform, 23 is a secondary lifting structure, 24 is a rotary angle disc, 25 is a side sliding and sand frame structure thereof, 26 is a P2 rack, 27 is a P1 rack, 28 is a P1 power-assisted claw, 28 is a P2 power-assisted claw, 29 is a P1 positioning plate, 29a P2 positioning plate, 30a P1 is a base plate, 30 is a stroke switch plate, 31 is a stroke switch plate 31 is a stroke sensor, and a stroke sensor is a stroke sensor 31 is a stroke sensor and a stroke sensor 32 is a stroke sensor.

Detailed Description

As shown in the figure, the sideslip structure of the utility model can be applied to a novel lifting machine, the novel lifting machine comprises a first table top (P1) and a second table top (P2), the first table top (P1) and the second table top (P2) are supported by a cross support arm, the lower end of the cross support arm is arranged on a lifting machine base (20), a main and auxiliary oil cylinder structure and a rack safety lock structure are arranged on the cross support arm support, and the piston rod end of the main and auxiliary oil cylinder structure is connected with a power-assisted anti-overturning part;

first mesa (P1) and second mesa (P2) front portion are provided with the corner dish, and first mesa (P1) and second mesa (P2) middle part are provided with secondary and lift structure (23), and first mesa (P1) and second mesa (P2) rear portion are provided with sideslip and husky structure (25) thereof.

The utility model discloses the safety lock structure of the rack of the lifting machine and the power-assisted anti-overturning part ensure the safety in use of the lifting machine.

The utility model discloses first mesa (P1) of machine of lifting and second mesa (P2) front portion are provided with the corner dish, make the machine of lifting do the four-wheel location for the vehicle.

The main and auxiliary oil cylinder structure comprises a first oil cylinder (12) and a second oil cylinder (13), the power-assisted anti-overturning component comprises a first power-assisted claw (28) and a second power-assisted claw (28 a), a piston rod end of the first oil cylinder (12) is provided with the first power-assisted claw (28), a piston rod end of the second oil cylinder (13) is provided with the second power-assisted claw (28 a), and the power-assisted claws are connected with an inner support arm (34) of the lifting machine through shafts. The power-assisted claw structures (28, 28a) are added at the piston rod ends of the main and auxiliary oil cylinders, so that the initial lifting oil pressure can be reduced, the design of the cylinder diameters of the main and auxiliary oil cylinders (12, 13) is smaller, and the lifter can be designed to be thinner.

The hydraulic lifting device is also provided with a first power-assisted oil cylinder (14) and a second power-assisted oil cylinder (15), the lower end of the power-assisted oil cylinder is connected with the lower end of the inner supporting arm (34) of the lifting machine in a shaft mode, and the piston rod end at the upper end of the power-assisted oil cylinder is connected with the upper portion of the outer supporting arm (21) of the lifting machine in a shaft mode.

This application helping hand hydro-cylinder becomes 4 hydro-cylinders structures with master-slave hydro-cylinder, and the diameter of master-slave hydro-cylinder designs can littleer when satisfying lifting thrust like this, and the machine of lifting can design more thinly.

The power-assisted claw (28) and the power-assisted claw (28 a) comprise a power-assisted assembly (28-1), a middle shaft hole (28-9) of the power-assisted assembly (28-1) is connected with a support arm (34) in the lifting machine through a shaft, an upper shaft hole (28-8) of the power-assisted assembly (28-1) is connected with a piston rod ear ring of the first oil cylinder (12), and a lower shaft hole (28-10) of the power-assisted assembly (28-1) is connected with a power-assisted roller (32) through a power-assisted roller shaft (28-2), a power-assisted spacer sleeve (28-3), a shaft sleeve (28-5) and a retainer ring (28-6). A positioning plate (29) is welded on the boosting assembly (28-1) and is used for realizing detection and early warning when the boosting claws (28) and (28 a) turn over.

The device also comprises a travel switch (30), wherein the travel switch (30) is arranged on the inner side of the inner support arm (34), a long hole with adjustable distance is arranged on the mounting plate, and a roller of the travel switch (30) is matched with a cam surface of a positioning plate (29) on the power-assisted assembly (28-1). When the power-assisted claw (28) overturns, the cam surface of the positioning plate (29) triggers the roller of the travel switch (30) to send out a signal. The travel switch (30) is used as a power assisting claw overturn detection switch and has a power assisting overturn prevention detection function. The lifting machine is used for preventing the danger that the other table top independently descends when an obstacle exists below the single table top of the lifting machine, and the safe and reliable work of the lifting machine is ensured. The distance between the roller of the travel switch (30) and the cam surface of the positioning plate (29) on the power-assisted assembly (28-1) can be adjusted, so that the cam surface of the positioning plate (29) triggers the roller of the travel switch (30) to send a signal when the power-assisted claw (28) turns over.

The rack safety lock structure comprises a first rack safety lock structure (27) and a second rack safety lock structure (26), the first rack safety lock structure (27) is arranged on the outer side of the first power cylinder (14), and the second rack safety lock structure (26) is arranged on the outer side of the second power cylinder (15). The safety lock structure of the racks (26, 27) is arranged at the outer sides of the power cylinders (14, 15), the structure is compact, and the lifter can be designed to be thinner.

The rack safety lock structure comprises a rack closing member (26-8), an upper shaft hole of the rack closing member (26-8) is connected with an upper lug of an outer support arm (21) of a lifting machine, a lock box closing member (26-9) is connected with a lower lug of an inner support arm (34) of the lifting machine, the rack closing member (26-8) is arranged in a lock tooth closing member (26-1), the lock tooth closing member (26-1) is connected with the lock box closing member (26-9) through a screw (26-10), a lock tooth (26-2) is connected with the rack closing member (26-1) through a lock shaft (26-3), a lock tooth limiting plate (26-12) is arranged on the lock tooth (26-2) through a screw (26-15), and two ends of a tension spring (26-16) are respectively connected with the lock tooth limiting plate (26-12) and a welding plate at the upper end of the lock tooth closing member (26-1) (providing a downward returning lock tooth tension force for the lock tooth (26-2); the air cylinder (26-5) is installed on the gear box assembly (26-1) through a screw (26-7) and a gasket (26-6), the air cylinder (26-5) overcomes the pulling force of a tension spring (26-16) to push up the lock gear (26-2) to unlock after ventilation, the lock switch bracket (26-13) is installed on a lock seat (26-18) welded on the lock gear box assembly (26-1) through a screw (26-15), and the proximity switch (26-14) is fixed on the lock switch bracket (26-13) through a self-contained nut; a screw (26-4) is screwed on a telescopic rod at the upper end of the air cylinder (26-5) (the screw (26-4) is used for adjusting the distance between a rod of the air cylinder (26-5) and the lock tooth (26-2) and ensuring that the lock tooth is fully ejected by the air cylinder rod), and a retainer ring (26-11) is arranged at the end part of the lock shaft (26-3); the rear lower end of the locking tooth (26-2) is provided with a downward bulge (26-17).

The locking teeth (26-2) in the locking tooth structure are not supported by the side edge of the square hole of the locking tooth box assembly (26-1) during locking, but force is transmitted to the locking shaft (26-3) by the connecting plate which is thickened per se and then transmitted to the lock seat (26-18) welded on the locking tooth box assembly (26-1) by the locking shaft (26-3). This structure is very reliable.

The lifting machine has the function of synchronous detection of the safety lock teeth, and the teeth can be locked only when the lock teeth of the two table boards are ensured to be positioned at the same tooth position and the tooth tongues are positioned in the racks, so that the lifting machine is safer and more reliable to use.

The rack and rack assembly (26-8) is lifted and stretched along with the lifter in the lock gear box assembly (26-1), and the lock gear (26-2) is jacked to unlock by overcoming the tension of the tension spring (26-16) after the air cylinder (26-5) is ventilated.

The corner disc (24) comprises a rotary disc (24-5), the rotary disc (24-5) is arranged on the base (24-3), and a bead disc (24-4) is arranged between the rotary disc (24-5) and the base (24-3).

An annular boss is arranged in the middle of the upper end of the base (24-3), a ball disc (24-4) is sleeved outside the annular boss, a rotary disc (24-5) is arranged at the upper end of the ball disc (24-4), a countersunk head screw (24-6) penetrates through the middle of the rotary disc (24-5), the lower end of the countersunk head screw (24-6) is screwed into a threaded hole in the middle of the floating sleeve (24-1), and a blocking piece (24-2) is arranged between the upper end face of the floating sleeve (24-1) and the lower end face of the base (24-3). The baffle plate (24-2) is added to reduce the outer diameter of the floating sleeve (24-1) and ensure the rotation range of the floating sleeve in the base (24-3); the rotary table (24-5) can be pressed and formed by a mould, and is as thin as possible on the premise of meeting the strength.

The automobile wheel lifting platform is characterized in that rubber cushion blocks (24-11) are arranged on two sides of the base (24-3) (the rubber cushion blocks (24-11) are used for filling the height difference between the rotary table (24-5) and the base (24-3) so that a wheel can be more stable when the wheel rotates up and down), arc-shaped grooves corresponding to the rotary table (24-5) are formed in the inner sides of the rubber cushion blocks (24-11), strip-shaped grooves are formed in the lower ends of the outer sides of the rubber cushion blocks (24-11), mounting groove plates (24-15) are arranged in the strip-shaped grooves, mounting holes are formed in the mounting groove plates (24-15), screws (24-7) penetrate through the mounting holes, gaskets (24-8) and are screwed into nuts (24-9) (connected with the lifting platform 22) through the screws (24-7).

Jacks are arranged on two sides of the front end of the rotary table (24-5), the rear end of the fixing pin assembly (24-14) is inserted into the jacks, a threaded hole is formed in the front end of the fixing pin assembly (24-14), a screw (24-10) penetrates through the rear end hole of the L-shaped clamping plate (24-12) and is screwed into the threaded hole, the rear end of the plastic-coated steel wire rope penetrates through the front end hole of the clamping plate (24-12) and is provided with a limiting block, and an annular sheet is arranged at the front end of the plastic-coated steel wire rope (24-13). The plastic-coated steel wire rope and the annular sheet are arranged to prevent the fixed closing parts 24-14 from being lost.

The front end of the base (24-3) is turned upwards, threaded holes are formed in two sides of the turning part, and screws (24-10) are screwed into the threaded holes (used for fixedly connecting the annular sheets at the front ends of the plastic-coated steel wire ropes (24-13)).

The rotary table (24-5) slides and rotates on the bead plate (24-4), and the rotary table (24-5) of the corner plate can transversely move in the middle groove of the base (24-3), so that the rotary table is suitable for vehicle types with different wheel tracks. The floating sleeve (24-1) is connected with the rotary table (24-5) through a countersunk head screw (24-6) and slides or rotates along with the rotary table (24-5), and the sliding and rotating range is limited by a middle groove (a groove below the annular boss) of the base (24-3). The base (24-3) is of a sleeve welding structure (namely a hollow round sleeve is welded in the middle of a square plate).

The height of the corner disc (24) is 18mm, and the rotation range of the rotating disc (24-5) of the corner disc is phi 84mm (namely the rotation range can reach any position in a phi 84mm circle).

The secondary lifting structure (23) comprises an outer sub-platform support arm assembly (23-20) and an inner sub-platform support arm assembly (23-28), the cross sections of support arms in the outer sub-platform support arm assembly (23-20) and the inner sub-platform support arm assembly (23-28) are rectangular structures, and the upper ends of the outer sub-platform support arm assembly (23-20) and the inner sub-platform support arm assembly (23-28) are provided with the sub-platform plate assembly (23-29);

the piston rod of the sub-platform main cylinder (16) is connected with the sub-platform inner supporting arm assembly (23-28) through the sub-platform cylinder upper shaft (23-9), and the cylinder head end of the sub-platform main cylinder (16) is connected with the sub-platform outer supporting arm assembly (23-20) through the sub-platform cylinder lower shaft (23-14).

The secondary lifting structure can be independently installed and can be selectively installed on the lifting table board, and the user can select and use the secondary lifting structure more conveniently.

The sub-table outer support arm assembly (23-20) is connected with the fixed seat (23-33) through a shaft head at the lower end, and the fixed seat (23-33) is connected with the main table top through a screw hole at the lower end by a screw; the whole secondary lifting structure and the main table top can be disassembled and assembled.

The middle parts of the outer sub-platform support arm assemblies (23-20) are connected with the middle parts of the inner sub-platform support arm assemblies (23-28) through shaft holes, bolts (23-18) and locking round nuts (23-19); the upper end of the sub-table main cylinder (16) is connected with the upper part of the sub-table inner support arm assembly (23-28) through a shaft hole, a shaft sleeve (23-13) and a screw (23-8) (used for positioning a shaft and preventing the shaft from moving), the upper shaft (23-9) and the shaft sleeve (23-10) of the sub-table oil cylinder are connected with the upper part of the sub-table inner support arm assembly (23-28), the lower end of the sub-table main cylinder (16) is connected with the lower end of the sub-table outer support arm assembly (23-20) through the shaft hole, the shaft sleeve (23-15), the screw (23-17) and the lower shaft (23-14) of the sub-table oil cylinder, and the upper shaft of the sub-table outer support arm assembly (23-20) is connected with the sub-table upper slide block (23-21).

The secondary lifting is that the cross sections of the support arms in the outer sub-platform support arm assembly (23-20) and the inner sub-platform support arm assembly (23-28) which are lifted in a shearing mode are designed into a rectangular structure, so that the secondary lifting is thinner on the premise of meeting the structural strength.

Drawing grooves with square sections are formed in two sides of the son platform plate combined piece (23-29), drawing rods matched with the drawing grooves are arranged on two sides of the drawing combined piece (23-3), a limiting plate (23-1) is arranged at the front end of each drawing rod, the limiting plate (23-1) is arranged in a limiting sliding groove in the front end of each drawing rod, an upper convex rod is arranged at the upper end of the limiting plate (23-1), a pressure spring (23-2) is sleeved on the outer side of the upper convex rod, the upper end of the pressure spring (23-2) abuts against the upper end face of the limiting sliding groove, the lower end of the pressure spring (23-2) abuts against the upper end face of the limiting plate (23-1), the lower end of the limiting sliding groove is open, the lower end of the limiting plate (23-1) is an inclined face, an upper plate is arranged at the rear upper end of the drawing combined piece (23-3), a screw (23-4) penetrates through a hole in the drawing combined piece (23-3) and is screwed on the nut piece (23-34), and a circular hole (23-35) is formed in the rear end of the bottom face of the drawing groove corresponding to the limiting plate (23-1) and the screw (23-4);

the drawing closing piece (23-3) can be drawn relative to the sub-table plate closing piece (23-29), the pressure spring (23-2) pushes the limiting plate (23-1) to be clamped in a round hole (23-35) formed in the bottom of the side edge square hole end of the sub-table plate closing piece (23-29), the inclined surface on the limiting plate (23-1) is inwards to facilitate inward pushing and installation of the drawing closing piece (23-3), and when the drawing closing piece (23-3) is pushed onto the sub-table plate closing piece (23-29), the lower end of the screw (23-4) is screwed into a screw cap at the lower end of the sub-table plate closing piece (23-25) of the sub-table plate closing piece (23-29). The nut plate (23-34) can be pulled upwards to pull out the screw (23-4) and the nut from the hole (23-25) of the bedplate assembly (23-29).

The sub-table plate assembly (23-29) is provided with a drawing square hole, the drawing assembly (23-3) can be drawn in the drawing square hole, so that a machine can lift vehicles with different wheelbases, a limiting plate (23-1) and a pressure spring (23-2) are arranged in a welding groove at the supporting arm end of the drawing assembly (23-3), when the machine is drawn out, the pressure spring (23-2) pushes the limiting plate (23-1) to be clamped in a round hole (23-35) formed in the bottom of the side square hole end of the sub-table plate assembly (23-29), so that the drawing assembly (23-3) is prevented from being excessively drawn and pulled down, and an inclined surface on the limiting plate (23-1) is inwards convenient for inwards pushing and mounting of the drawing assembly (23-3). The screw (23-4) passes through the hole on the support arm of the drawing and combining piece (23-3) and is screwed on the nut piece (23-34), when the drawing and combining piece (23-3) is pushed to the bedplate combining piece (23-29), the lower end of the screw (23-4) is nailed and capped into the hole (23-25) of the bedplate combining piece (23-29), which plays a role of fixing the drawing and combining piece (23-3) and preventing movement, when the drawing and combining piece needs to be drawn, the nut piece (23-34) can be lifted upwards, and the nut of the screw (23-4) can be drawn out from the hole (23-25) of the bedplate combining piece (23-29) and then is drawn outwards.

The secondary lifting structure (23) is provided with a pneumatic unlocking structure, the pneumatic unlocking structure comprises a lock bottom plate (23-22) and lock plates (23-27), mounting holes are formed in the periphery of the lock bottom plate (23-22), the lock plates (23-27) are connected with the lower ends of support arm assemblies (23-28) in the secondary lifting structure through support shafts (23-26), and sliding blocks (23-25) are arranged at the two ends of the support shafts (23-26); the thin cylinder (23-30) is arranged on the lock plate (23-27), the lock bottom plate (23-22) is provided with a sliding limit frame (23-40), and the fulcrum shaft (23-26) penetrates through the sliding limit frame (23-40) and the thin sliding blocks (23-23) at two sides of the sliding limit frame (23-40); the upper end of the sub-table inner support arm assembly (23-28) is connected with the rear end of the drawing assembly (23-3) through a shaft hole, a sub-table inner arm upper shaft (23-5), a shaft sleeve (23-6) and a check ring (23-7); the lower end of the thin cylinder (23-30) is provided with a cylinder sleeve (23-12); the end parts of the support shafts (23-26) are provided with check rings (23-24), the lower ends of the thin cylinders (23-30) are connected with the lock plates (23-27) through screws (23-31), and the end parts of the telescopic rods of the thin cylinders (23-30) are screwed with screws (23-32); the front ends of the locking plates (23-27) are provided with locking shafts (23-50), and the locking bottom plates (23-22) behind the locking shafts (23-50) are provided with tooth blocks (23-51).

Flat-head silencers (23-11) are screwed on the thin cylinders (23-30) (the thin cylinders are outsourcing parts, are pneumatic universal silencing parts and are sintered materials, and air achieves silencing effect through honeycomb gaps in the thin cylinders).

The sliding blocks (23-25) at the two ends of the fulcrum shaft (23-26) slide and lift on the main table board; when the thin cylinder (23-30) is ventilated, the lock plate (23-27) is driven to rotate around the fulcrum shaft (23-26) to unlock (the lock shaft (23-50) at the front end of the lock plate (23-27) is lifted to be higher than the tooth block (23-51) on the lock bottom plate (23-22)). The cylinder sleeve (23-12) is arranged on the piston rod at the lower end of the thin cylinder (23-30) by using a screw, and the cylinder sleeve (23-12) slides on the lock bottom plate (23-22). When the gear locking is needed in the secondary lifting, when the thin cylinder (23-30) exhausts, the front end of the locking plate (23-27) descends, the fulcrum shaft 23-26 drives the locking shaft (23-50) on the locking plate (23-27) to slide forwards (namely, the left side of the figure 14) to the gear block (23-51), and the rear side of the locking shaft (23-50) leans against the front side locking gear of the gear block (23-51).

The lock tooth structure of the secondary lifting is thin, the connection structure of the lock plate (23-27) and the thin cylinder (23-30) is compact, and the lock plate and the main table top are of a detachable structure, so that the secondary lifting is convenient to select, match and install.

The sideslip and sand rack structure (namely the sideslip structure of the utility model) comprises a sideslip bottom plate assembly (25-1), and the sideslip bottom plate assembly (25-1) is fixed on the main table surface of the lifting machine by screws through holes at four corners of the sideslip bottom plate assembly;

the side sliding plate (25-5) is inserted into a hole on the corner of the side sliding bottom plate assembly (25-1) through a fixed pin assembly (25-6) for fixation, and the fixed pin assembly (25-6) is connected with the main table top through a clamping plate (25-7), a screw (25-9) and a plastic-coated steel wire rope. The plastic-coated steel wire rope (25-8) is used for preventing the fixed pin assembly (24-14) from being lost, and the fixed pin assembly (25-6) is pulled out before four-wheel positioning is carried out when the vehicle is driven onto the lifting machine.

The middle part of the side sliding plate (25-5) is provided with a hole, a screw (25-12) penetrates through the hole, a bottom plate assembly (25-1) and a side sliding block (25-11) are screwed on the side sliding pin shaft (25-10), the bottom plate assembly (25-1) is provided with a square frame (25-1-2) with a shoulder, and the side sliding block (25-11) is arranged in the square frame (25-1-2);

The side sliding plate (25-5) slides through two holes in the middle, a screw (25-12) penetrates through the side sliding plate (25-5) and the side sliding bottom plate assembly (25-1), the side sliding block (25-11) is screwed on the side sliding pin shaft (25-10), the side sliding pin shaft (25-10) can slide longitudinally in the side sliding block (25-11) by utilizing a shoulder, and the side sliding block (25-11) can slide transversely in a frame (25-1-2) with the shoulder of the side sliding bottom plate assembly (25-1). This ensures the all-round sliding of the side sliding plate (25-5).

The side-sliding sand rack (25-2) is arranged on the side-sliding bottom plate assembly (25-1), a nylon ball (25-3) placing hole is formed in the side-sliding sand rack (25-2), the side-sliding sand rack (25-2) is arranged between the side sliding plate (25-5) and the side-sliding bottom plate assembly (25-1), an annular groove (25-40) is formed in the side-sliding bottom plate assembly (25-1), and the nylon ball (25-3) is arranged in the annular groove (25-40). The nylon ball (25-3) is used for supporting the sliding action of the side sliding plate (25-5).

The side sliding sand rack (25-2) is used for supporting the sliding action of the side sliding plate (25-5), six ring grooves (25-40) can be welded on the side sliding bottom plate assembly (25-1), and 3 nylon balls (25-3) are placed in each ring groove (25-40) to increase the supporting area of the side sliding plate.

The side-sliding sand racks (25-2) are four and are arranged in the transverse direction, and each side-sliding sand rack (25-2) is fixed on the side-sliding bottom plate assembly (25-1) through 2 screws (25-4).

The side sliding sand rack (25-2) comprises a reversed Y-shaped sliding rack (25-2-1), a plurality of nylon ball placing holes are uniformly distributed in the sliding rack (25-2-1), a pull ring (25-2-2) is arranged in the middle of an opening of the side sliding sand rack (25-2), and the pull ring (25-2-2) is connected with the sliding rack (25-2-1) through a tension spring (25-2-3).

The number of the sliding carriages (25-2-1) is two, the two sliding carriages (25-2-1) are arranged in a buckling mode, each pull ring (25-2-2) is connected with four tension springs (25-2-3), and twenty nylon balls (25-2-5) are arranged; one sliding frame (25-2-1) is provided with a column base (25-2-6), the other sliding frame (25-2-1) is provided with a round hole corresponding to the column base (25-2-6), and the other end of the tension spring (25-2-3) is connected with the sliding frame (25-2-1) through a screw (25-2-4).

20 nylon balls (25-2-5) are placed in the circular grooves through 2 carriages (25-2-1), and a plurality of pylons (25-2-6) on one carriage (25-2-1) are embedded into the circular holes on the other carriage to be buckled; one end of each tension spring (25-2-3) is connected with the hole of the pull ring (25-2-2) and the other end is fixedly connected with a screw (25-2-3) arranged on a square hole with an angle of 4 of the sliding frame (25-2-1). Thus, after the side sliding plate (25-5) slides under the sliding force of the vehicle, the side sliding plate (25-5) can be reset by the pulling force of the tension spring (25-2-3) under the condition that the vehicle is lifted without load.

The travel switch (30) is arranged on the inner support arm (34) through a mounting plate, and a long hole with adjustable distance is arranged on the mounting plate. The long hole can adjust the distance between the roller of the travel switch (30) and the cam surface of the positioning plate (29) on the power-assisted assembly (28-1).

The first oil cylinder (12) is connected with the second oil cylinder (13) in series, and the annular area of a rod cavity of the first oil cylinder (12) is equal to the area of a rodless cavity of the second oil cylinder (13).

The first oil cylinder (12) comprises a piston (12-3), the piston (12-3) is connected with a piston rod (12-2), and the piston rod (12-2) is connected with power-assisted claws (28) and (28 a); the end face of the piston (12-2) is provided with an oil hole (12-6), the oil hole (12-6) bypasses a support ring (12-12) on the outer wall of the piston (12-2) and is communicated with an annular oil guide groove (12-7) on the outer circle of the piston (12-2), the circumference of the cylinder barrel (12-1) is provided with a hole (12-8), the hole (12-8) is communicated with the oil guide groove (12-7), the end part of the cylinder barrel (12-1) is arranged in the guide sleeve (12-4), and a sealing ring (12-13) is arranged between the inner wall of the guide sleeve (12-4) and the outer wall of the cylinder barrel (12-1) and is arranged in a groove on the inner wall of the guide sleeve (12-4).

By the aid of the oil cylinder structure, automatic oil supplementing and exhausting can be achieved when the lifting machine rises to the highest position, the sealing element cannot be damaged when oil supplementing and exhausting are carried out under the loaded condition, pressure peak is prevented from being generated at the stroke end of the oil cylinder, particularly, a secondary oil cylinder (a second oil cylinder) is easy to pressurize, and synchronous accumulated errors of the oil cylinder can be eliminated to level the lifting machine.

When the piston (12-2) of the oil cylinder of the lifter which rises to the highest point also moves to the end of the guide sleeve (12-4), hydraulic oil can be communicated from the rodless cavity to the rod cavity.

An annular groove is formed in the outer wall of the piston (12-3), a Glare ring (12-14) is arranged in the annular groove, and the outer end of the Glare ring (12-14) is in contact with the inner wall of the cylinder barrel (12-1).

The tail end of the cylinder barrel (12-1) is provided with a through hole, and a joint (12-15) (the joint (12-15) is used for connecting an oil pipe, and both ends of the joint are provided with threads).

Six holes (12-8) are uniformly distributed along the circumferential direction; the hole (12-8) is arranged at the outer side of the sealing ring (12-13), an oil duct (12-9) is arranged between the outer circle of the cylinder barrel (12-1) and the inner circle of the guide sleeve (12-4) at the position of the six small holes (12-8) on the cylinder barrel (12-1), a groove (12-10) is processed on the end face of the inner hole of the guide sleeve (12-4), the groove (12-10) is communicated with the oil duct (12-9), and the groove (12-9) is communicated with an oil hole (12-11) on the guide sleeve (12-4) and an oil duct of the joint (12-5).

The above first cylinder (12) structure is also applicable to the second cylinder (13).

The piston (12-3) of the oil cylinder is pushed by high-pressure oil supplied by a gear pump (2) in the power unit, and then the piston rod (12-2) connected with the piston pushes the power-assisted claw (28) and the power-assisted claw (28 a) to push the support arm (34) of the lifter to lift the lifter.

The hydraulic oil of the rodless cavity of the second oil cylinder (13) is provided by the rodless cavity of the first oil cylinder (12).

The annular area of the rod cavity of the first oil cylinder (12) is equal to the area of the rodless cavity of the second oil cylinder (13), so that the two table tops (P1) and (P2) can be synchronously lifted in series. After oil supplementing and exhausting are finished, the hydraulic oil quantity in the rod cavity of the first oil cylinder (12), the rodless cavity of the second oil cylinder (13) and the connecting oil way is basically unchanged, and synchronous operation of the two table tops (P1) and (P2) can be ensured.

The middle part of the inner support arm (34) is provided with an inclination angle sensor (31, 31 a), a detection signal output port of the inclination angle sensor (31, 31 a) is connected with a detection signal input port of a controller, and a control signal output port of the controller is connected with a control signal input port of the leveling solenoid valve (6 a).

The inclination angle sensor is added, under the cooperation of the electromagnetic valve of the hydraulic system, the two table tops can be synchronously detected at any time, oil is automatically supplemented and drained at any time, the two table tops are ensured to synchronously operate, and the leveling precision is higher.

Although the oil drainage channel at the stroke end of the oil cylinder can be used for leveling the lifting machine in the scheme, synchronous errors exceeding the precision requirement can occur due to the manufacturing precision of the oil cylinder and the frame, micro-leakage of hydraulic oil in the full-stroke lifting process from the bottom to a high point after the lifting machine is used for a period of time and the like.

In order to solve the problems, the tilt angle sensors (31, 31 a) are arranged in the middle of the inner supporting arm (34) of each table top (P1, P2) of the lifter, the precision is 0.02 degrees, the precision is converted into the lifting stroke precision which is less than 0.5mm, and the use requirement can be met; the height difference of the two table tops (P1, P2) is determined through the inclination angle sensors (31, 31 a) and the change of the angle of the horizontal plane of the initial lowest position, a signal is provided for a control system of the power unit, and then a leveling electromagnetic valve (6 a) of the power unit is controlled to be opened and closed to perform synchronous leveling on the table tops at any time.

The hydraulic inlets of the leveling electromagnetic valve (6 a), the sub-platform electromagnetic directional valves (7) (7 a) and the main platform electromagnetic directional valve (6) are respectively connected with a pressure gauge (5), an outlet of a plug-in manual pump (3), an outlet of a tubular plug-in one-way valve (4) and an outlet of a plug-in electromagnetic unloading valve (9), the outlet inlet of the plug-in manual pump (3) is respectively connected with one end of an oil filter element (1), one end of a split overflow valve (8) and one end of a pressure compensation throttle valve (10), the other end of the oil filter element (1) is respectively connected with the inlet of the tubular plug-in one-way valve (4) and the other end of the split overflow valve (8) through a gear pump (2), and the other end of the pressure compensation throttle valve (10) is connected with the inlet of the plug-in electromagnetic unloading valve (9);

a hydraulic outlet of the leveling electromagnetic valve (6 a) is connected with an oil inlet of the auxiliary cylinder (13) through an explosion-proof valve (19), a hydraulic outlet of the sub-table electromagnetic directional valve (7) is connected with an oil inlet of the sub-table main cylinder (16) through a one-way throttle valve (18), a hydraulic outlet of the sub-table electromagnetic directional valve (7 a) is connected with an oil inlet of the sub-table auxiliary cylinder (17) through the one-way throttle valve (18), an oil outlet of the sub-table main cylinder (16) is connected with a hydraulic outlet of the sub-table electromagnetic directional valve (7 a), a hydraulic outlet of the main table electromagnetic directional valve (6) is connected with an oil inlet of the main cylinder (12) through the explosion-proof valve (19), and an oil outlet of the main cylinder (12) is connected with a hydraulic outlet of the leveling electromagnetic valve (6 a); the hydraulic outlet of the master electromagnetic directional valve (6) is respectively connected with the oil inlet of the left power-assisted oil cylinder (14) and the oil inlet of the right power-assisted oil cylinder (15), and the oil outlet of the right power-assisted oil cylinder (15) is respectively connected with the oil outlet of the auxiliary cylinder (13), the oil filter core (1), the oil outlet of the power-assisted oil cylinder (14) and the oil outlet of the sub-platform auxiliary cylinder (17).

When a vehicle is lifted, the motor (11) drives the hydraulic pump (2) to suck hydraulic oil through the oil filter core (1), the pump outputs high-pressure hydraulic oil to open the one-way valve (4), the high-pressure hydraulic oil enters the rodless cavity of the master cylinder (12) through the opened master electromagnetic directional valve (6) and the explosion-proof valve (19), the hydraulic oil with the rod cavity is conveyed to the rodless cavity of the master auxiliary cylinder (13) through the explosion-proof valve (19) in the piston lifting process of the master cylinder (12), the lifting actions of the two table surfaces can be synchronously performed because the area of the rod cavity of the master cylinder (12) is equal to that of the rodless cavity of the master auxiliary cylinder (13), and the left power cylinder (14) and the right power cylinder (15) also participate in the lifting action through the master electromagnetic directional valve (6).

When the lifting machine descends, the electromagnetic unloading valve (9) and the master station electromagnetic directional valve (6) are simultaneously electrified and opened, the lifting machine frames P1 and P2 transmit force to the piston rod of the master station main oil cylinder (12) and the piston rod (12-2) of the master station auxiliary oil cylinder (13) under the action of the dead weight of a vehicle and the machine, the piston rod (12-2) pushes the piston (12-3), the master station auxiliary oil cylinder (13) returns hydraulic oil pressure to the rod cavity of the master station main oil cylinder (12) through the piston (12-3), and the master station main oil cylinder (12) returns hydraulic oil to the oil tank through the master station electromagnetic directional valve (6), the electromagnetic unloading valve (9) and the pressure compensation throttle valve (10) through the piston (12-3). At the moment, the left power-assisted oil cylinder (14) and the right power-assisted oil cylinder (15) also participate in descending through the master station electromagnetic directional valve (6).

The ascending and descending processes of the sub-platform main oil cylinder (16) and the sub-platform auxiliary oil cylinder (17) of the secondary lifting device (23) are similar to the process of the main platform, and only the sub-platform electromagnetic directional valve (7) is opened to open an oil path.

The lifting machine consists of two racks P1 and P2, wherein each rack mainly consists of a base (20), an inner supporting arm (34), an outer supporting arm (21), a power-assisted claw (28 or 28 a), a rack (26 or 27), a master platform main oil cylinder (12), a master platform auxiliary oil cylinder (13), a left power-assisted oil cylinder (14), a right power-assisted oil cylinder (15), a lifting platform surface (22), a secondary lifting (23), a corner disc (24), a sideslip (25), a slave platform main oil cylinder (16) and a slave platform auxiliary oil cylinder (17).

The lifting machine is used for the first installation, the lifting machine is lifted to the highest point, an oil drainage channel (the lifting machine) in the main oil cylinder (12) and the main oil cylinder (13) is utilized to lift to the highest point, 6 small holes (12-8) are designed on the circumference of the cylinder barrel (12-1) to enter into an oil channel (12-9) between the outer circle of the cylinder barrel (12-1) and the inner circle of the guide sleeve (12-4) through an oil hole (12-7) in an outer ring shape on the piston (12-3) and an outer ring shape on the outer ring of the guide sleeve (12-4), the oil channel passes through a groove (12-9) on the guide sleeve (12-4) and an oil hole (12-11) on the guide sleeve (12-4), the oil channel is connected to a rodless cavity of the main oil cylinder (13) through a joint (12-5), the flow process in the main oil cylinder (13) is the same as that of the main oil cylinder (12), the flow process in the main oil cylinder barrel (12-3), a series of oil channels on the cylinder barrel (12-1) and the guide sleeve (12-4) flows back to the oil channel, the air channel and the oil channel is finally flows back to the oil drainage unit to the oil drainage system to be synchronously leveled with the oil drainage system, and the oil drainage system, the oil drainage system is leveled, and the oil drainage system is synchronously leveled oil drainage system, and the oil drainage system is leveled.

When the lifting machine mother platform and the secondary lifting are at the lowest point, the vehicle runs from the bridge approach at the right end of the lifting machine to the lifting platform surface (22), and the front wheel runs to the corner disc (24).

According to a principle diagram of a hydraulic system of a lifting machine, when a vehicle is lifted, hydraulic oil is sucked in by a hydraulic pump (2) through an oil filter core (1), the pump outputs high-pressure hydraulic oil to open a one-way valve (4), the high-pressure hydraulic oil enters a rodless cavity of a master station main oil cylinder (12) through an opened master station electromagnetic directional valve (6) and passes through an explosion-proof valve (19), the hydraulic oil with a rod cavity is conveyed to a rodless cavity of a master station auxiliary oil cylinder (13) through the explosion-proof valve (19) in the process of lifting a piston of the master station main oil cylinder (12), and because the area of the rod cavity of the master station main oil cylinder (12) is equal to that of the rodless cavity of the master station auxiliary oil cylinder (13), the lifting actions of two table surfaces can be synchronously carried out.

A piston rod of a master station main oil cylinder (12) and a piston rod of a master station auxiliary oil cylinder (13) respectively push a power-assisted claw (28) and a power-assisted claw (28 a) to perform an initial power-assisted lifting process, at the moment, a left power-assisted oil cylinder (14) and a right power-assisted oil cylinder (15) also participate in lifting through a master station electromagnetic directional valve (6), a middle shaft of each power-assisted claw (28, 28 a) drives an inner support arm (34) to swing to support a lifting table top (22) to lift upwards, vertical plates on two sides of a power-assisted assembly (28-1) of each power-assisted claw (28, 28 a) to be lifted to a certain height are in contact with a transverse plate (35) welded in the middle of an inner support arm (34), and the power-assisted lifting process is finished to continue to lift.

The hydraulic oil in the rod cavities of the master auxiliary oil cylinder (13), the left power-assisted oil cylinder (14) and the right power-assisted oil cylinder (15) returns to the oil tank of the power unit along with the rising of the lifter.

The ascending process of the sub-platform main oil cylinder (16) and the sub-platform auxiliary oil cylinder (17) of the secondary lifting device (23) is similar to that of the main platform, only the sub-platform electromagnetic directional valve (7) is opened to open an oil way, and no assistance is provided in the ascending process of the support arm.

If one oil cylinder in the lifting machine frames P1 and P2 is lifted to the highest point in advance, the oil drainage channels of the oil cylinders are communicated, no matter the main oil cylinder and the auxiliary oil cylinder have channels in the lifting process, oil in the rodless cavity flows back to the oil tank, the pressurization phenomenon cannot occur, and the slow oil cylinder also can play a leveling role in eliminating accumulated errors when being lifted to the highest point.

When the lifting machine is lifted, the inclination angle sensors (31 and 31 a) are used for automatically eliminating the leveling accumulated error of the hydraulic system, when the table top (P2) of the lifting machine is lower than the table top (P1), the PC board sends an instruction to the leveling electromagnetic valve according to the data comparison of the two inclination angle sensors (31 and 31 a), the leveling electromagnetic valve (6 a) is opened, and oil supplementing leveling is carried out on the master auxiliary oil cylinder (13).

When a vehicle is lifted down by a lifting machine, the electromagnetic unloading valve (9) and the master station electromagnetic directional valve (6) are electrified and opened at the same time, the lifting machine frames P1 and P2 transmit force to the piston rod of the master station main oil cylinder (12) and the piston rod (12-2) of the master station auxiliary oil cylinder (13) under the action of the self-weight of the vehicle and the machine, the piston rod (12-2) pushes the piston (12-3), the master station auxiliary oil cylinder (13) returns hydraulic oil to the rod cavity of the master station main oil cylinder (12) through the piston (12-3), and the master station main oil cylinder (12) returns the hydraulic oil to an oil tank through the master station electromagnetic directional valve (6), the electromagnetic unloading valve (9) and the pressure compensation throttle valve (10) through the piston (12-3). At the moment, the left power cylinder (14) and the right power cylinder (15) also participate in descending action through the mother platform electromagnetic directional valve (6).

The descending process of the lifting machine mother platform is accompanied by the locking tooth detection and unlocking processes of the rack P2 (26) and the rack P1 (27), and the locking tooth (26-2) is pushed upwards to unlock only by overcoming the tension of the tension spring (26-16) after the cylinder (26-5) is filled with high-pressure gas. Meanwhile, two proximity switches (26-14) respectively detect the lock tooth limiting plates (26-12) to determine whether the convex parts (26-17) (lock tongues) of the lock teeth (26-2) are all jacked up or not, and transmit signals to the control system, if the lock tongues (26-17) of any 1 lock tooth (26-2) are not jacked up, the lifter cannot descend, and the vehicle is prevented from being in danger of overturning.

And hydraulic oil is sucked back from an oil tank of the power unit along with the descending process of a rod cavity of the master auxiliary oil cylinder (13), a rod cavity of the left power-assisted oil cylinder (14) and a rod cavity of the right power-assisted oil cylinder (15). The hydraulic oil has the function of lubricating the cylinder barrel of the oil cylinder, and the cylinder barrel is prevented from rusting when the equipment is stopped for a long time when meeting humid air.

The descending process of the sub-platform main oil cylinder (16) and the sub-platform auxiliary oil cylinder (17) of the secondary lifting device (23) is similar to that of the main platform, and only the sub-platform electromagnetic directional valve (7) is opened to open an oil path.

If the lifting machine locks the teeth, the mother platform and the secondary lifting need to be lifted a little to ensure that the mechanical locks of the racks on the two sides are fully unlocked, and then the descending operation is carried out.

When the lifting machine is descended, the inclination sensors (31 and 31 a) are used for automatically eliminating the leveling accumulated error of the hydraulic system, when the table top (P2) of the lifting machine is higher than the table top (P1), the PC board sends a command to the leveling solenoid valve according to the data comparison of the two inclination sensors (31 and 31 a), the leveling solenoid valve (6 a) is opened, and oil drainage leveling is carried out on the master auxiliary oil cylinder (13).

The utility model discloses an oil cylinder structure not only is applicable to and cuts formula machine of lifting, also includes the column type machine of lifting.

The operation of the present invention will be described with reference to the accompanying drawings.

The operation of the corner disc is described as follows:

a) Before a vehicle is driven onto a lifting machine, pin shafts of two fixed pin assembly pieces (24-14) penetrate through small holes of a rotary table (24-5) and are inserted into fixed holes of a base (24-3) to fix the rotary table (24-5), front wheels of the vehicle are driven onto a corner disc (24), the vehicle is lifted by secondary lifting (23) before four-wheel positioning of the vehicle is carried out, the front wheels of the vehicle are lifted to be away from the corner disc (24), the pin shafts of the fixed pin assembly pieces (24-14) are pulled out from the fixed holes of the rotary table (24-5) and the base (24-3), the rotary table (24-5) is in a floating state, when the secondary lifting (23) is lowered, wheels are contacted with the rotary table (24-5) of the corner disc (24) again, and the rotary table (24-5) can rotate and laterally move under the action of factors such as camber angle and main pin inclination angle of the wheels of the vehicle.

b) The rotary disc (24-5) slides and rotates on the bead disc (24-4);

c) The floating sleeve (24-1) is connected with the rotary table (24-5) through a countersunk head screw (24-6) and slides or rotates along with the rotary table (24-5), and the sliding and rotating ranges are limited by a middle groove of the base (24-3);

the baffle plate (24-2) is used for preventing the floating sleeve (24-1) from bouncing out of the hole in the base (24-3).

The secondary lifting structure (23) is horizontally arranged on the lifting table top (22), the lifting table top (22) of the lifting machine is also arranged at the lowest point, the vehicle is driven to the lifting table top (22) of the lifting machine, after the mother table is lifted to the required height, the oil cylinder (16) of the secondary lifting structure (23) is started to push the support arm assembly (23-28) in the son table, the table plate assembly (23-29) is lifted to the height capable of drawing the drawing assembly (23-3), the drawing assembly (23-3) is drawn to the position capable of being at the top point of the vehicle, the support arm assembly is continuously lifted to the maximum height, then the locking tooth operation is carried out, at the moment, the thin cylinder (23-30) is in an exhaust state, and the transverse shaft of the locking plate (23-27) slides leftwards is leaned against the locking tooth on the locking block at the right end of the locking bottom plate (23-22); when the lifting platform descends, delayed ascending action is needed to unlock the lock, the thin cylinder (23-30) is communicated with high-pressure gas to jack the lock plate (23-27) to be in an unlocked state, then the piston rod of the cylinder (16) begins to descend, the lock plate (23-27) slides leftwards after passing through the lock block at the right end of the lock bottom plate (23-22), the sliding block (23-25) on the support arm assembly (23-28) in the sub-platform slides leftwards on the main platform surface, and the platform plate assembly (23-29) descends and is flatly placed on the lifting platform surface (22).

Before the vehicle runs onto the lifting machine, two fixing pin fittings (25-6) are inserted into holes on the corners of the side sliding bottom plate fittings (25-1) for fixing, so as to ensure that the side sliding plate (25-5) is in a locking state in the running process of the vehicle; when four-wheel positioning is carried out, the vehicle is lifted by the lifting machine, and then the two fixing pin assembly pieces (25-6) are drawn out from the holes on the corners of the side sliding bottom plate assembly pieces (25-1); when the vehicle descends to the side sliding plate (25-5) again, the side sliding plate (25-5) can slide or swing in two directions through two sliding structures (25-13) under the action of factors such as the camber angle and the kingpin inclination angle of the vehicle wheel.

The side-sliding bottom plate assembly (25-1) cuts two rectangular holes in the middle of the bottom plate (25-1-1), and then welds the square frame (25-1-2) with a shoulder on the square frame (25-13), and the structure is favorable for fully utilizing the thickness space size to ensure that the side sliding is thinner; in the limited space, a side sliding block (25-11) with a shoulder is installed and slides transversely in a square frame (25-1-2) with a shoulder, and a rectangular sliding groove with a shoulder is designed below the side sliding block (25-11) to allow a side sliding pin shaft (25-10) with a shoulder to slide longitudinally.

The side sliding sand rack (25-2) provides support for the side sliding plate (25-5) when sliding and rolls between the side sliding sand rack (25-2) and the side sliding bottom plate assembly (25-1). Under the condition that the vehicle is lifted without load, the side sliding plate (25-5) can be reset by the tension of the tension spring (25-2-3).

When the lifter rises, the rack and rack assembly (26-8) extends and retracts along with the lifter in the lock gear box assembly (26-1), and the upper inclined plane of the teeth of the rack and rack assembly (26-8) pushes the lower inclined plane of the lock tongue (26-17) of the lock teeth (26-2) to overcome the tension of the tension spring (26-16) to unlock.

When the lifter descends, the air cylinder (26-5) is charged with high-pressure air and pushes up the locking teeth (26-2) to unlock against the pulling force of the tension spring (26-16). Meanwhile, the two proximity switches (26-14) respectively detect the lock tooth limiting plates (26-12) to determine whether the lock tongues (26-17) of the lock teeth (26-2) are all jacked up or not, and transmit signals to the PC board chip, if the lock tongues (26-17) of any 1 lock tooth (26-2) are not jacked up, the lifter cannot descend, and the vehicle rollover danger is prevented.

When the lifting machine locks the tooth to operate, the air cylinder (26-5) is communicated with the atmosphere to release pressure, the rack and rack assembly (26-8) descends and retracts along with the lifting machine in the lock tooth box assembly (26-1) in the descending process of the lifting machine, the lock tooth (26-2) clamps the lock tongue (26-17) downwards on the tooth of the rack and rack assembly (26-8) under the action of spring force, and the lifting machine stops descending and locking the tooth.

By adjusting the distance between the front end face of the proximity switch (26-14) and the lock tooth limiting plate (26-12), the lock tongue (26-17) of the lock tooth (26-) 2 is ensured to enter the tooth position of the rack and pinion assembly (26-8), and the proximity switch (26-14) senses the proximity signal of the lock tooth limiting plate (26-12). This signal is transmitted to the control system.

Only when the lock tongues (26-17) of the lock teeth (26-2) in the two sets of lock tooth structures (26) of the lifting machine enter the tooth positions of the rack and rack assembly (26-8) and the two proximity switches (26-14) sense the proximity signals of the lock tooth limiting plates (26-12), the lifting machine can perform the lock tooth action, otherwise, the lifting machine can only perform the lifting action under the control of the control system without descending the lock teeth, and the risk of vehicle rollover caused by unilateral lock teeth is prevented.

When the lifting machine is lifted from the bottom, the power-assisted claw (28) is pushed by a piston rod of a cylinder of the mother platform, a lower power-assisted roller (28-4) firstly contacts a base plate (33) on a base (20) of the lifting machine, at the moment, the lifting machine is lifted in a power-assisted state, when the lifting machine is lifted to a certain height, vertical plates on two sides of a power-assisted part (28-1) of the power-assisted claw (28) and the power-assisted part (28 a) are contacted with a transverse plate (35) welded in the middle of an inner supporting arm (34), and the power-assisted lifting process is ended to continue to lift.

When a barrier is arranged below any one of two table boards (P1) and (P2) of the lifting machine, when the lifting machine descends, vertical plates on two sides of a rack power-assisted assembly (28-1) without the barrier are still in contact with a transverse plate (35) welded in the middle of an inner support arm (34), the table board descends independently, a rack power-assisted claw (28) or (28 a) without the barrier is overturned under the drive of a master table oil cylinder piston rod, when the platform is overturned to a certain angle, a cam surface of a positioning plate (29) of the power-assisted claw (28) triggers a roller of a travel switch (30) to send a signal, the signal is transmitted to a control system of the lifting machine, the lifting machine stops descending continuously, and the risk of vehicle overturn caused by unilateral descending of the lifting machine is prevented.

High-pressure oil from a power unit enters a rodless cavity of a master cylinder (12) from a joint (12-5), a piston (12-3) moves to the inner end face of a guide sleeve (12-4) under the action of the high-pressure oil, at the moment, a lifter rises to the highest point, the oil passes through an oil hole (12-6) in the piston (12-3) and an outer circular oil guide groove (12-7), 6 small holes (12-8) are designed on the circumference of a cylinder barrel (12-1) and enter an oil channel (12-9) between the outer circle of the cylinder barrel (12-1) and the inner circle of the guide sleeve (12-4), the rodless cavity passes through a groove (12-9) in the guide sleeve (12-4) and a guide sleeve (12-11) on the guide sleeve (12-4), the joint (12-5) is connected to a master auxiliary cylinder (13), the flow process in the master auxiliary cylinder (13) is the same as that of the master cylinder (12), the flow process in the master cylinder (13) also passes through the piston (12-3), the piston (12-1) and the guide sleeve (12-4) and the oil channel (12-4), and finally flows back to an oil channel P of the oil channel of the oil guide sleeve (1) and the oil channel of the oil tank (2) and the oil channel (P) and the power unit.

The piston (12-3) is in the process of extending. Within 13mm from the inner end face of the guide sleeve (12-4), automatic oil supplementing, exhausting (primary installation) and leveling actions are started. The sealing ring (12-14) passes through six small holes (12-8) in the cylinder barrel (12-1), the edges and corners of the small holes are smooth to process, the sealing ring cannot be scratched, the oil pressure cannot generate high pressure (pressure peak value) on the sealing ring (12-14) due to the fact that the piston (12-3) reaches the stroke end point, meanwhile, oil flows bypass the sealing ring (12-14), liquid flow cannot flow through a sealing device of the piston (12-3) at high pressure and high speed, adverse effects are generated on the sealing ring (12-14), and the sealing effect is achieved.

The smaller the aperture of 6 small holes (12-8) designed on the circumference of the cylinder barrel (12-1), the more stable the floating state when the piston (12-3) moves to be within 13mm from the inner end face of the guide sleeve (12-4).

The design structure of the oil drainage channel of the utility model can be used at the other end (cylinder head end) of the oil cylinder as well, the cylinder head can be designed into a threaded connection mode (instead of a welding mode), the oil drainage channel communication of the two oil cylinders can be realized when the lifting machine is lowered to a low point, and the oil supplementing and draining leveling is carried out on the lifting machine; the method is particularly suitable for being used on a gantry type lifting machine with an inverted oil cylinder.

An oil drainage channel structure is designed at the other end (cylinder head end) of the oil cylinder, when the oil cylinder is applied to a scissor lift, the speed is slow when the oil cylinder starts to ascend, oil drainage small holes (12-8) in a cylinder barrel (12-1) are designed to be smaller, oil drainage quantity is controlled to ensure that the initially ascending oil quantity of the oil cylinder is enough to establish ascending pressure, and the oil cylinder can normally ascend and run when a sealing ring on a piston passes through the small holes in the cylinder barrel.

When the lifter is at the lowest point, the control system defaults to 0 for the data difference value of the inclination angle sensors (31 and 31 a), namely the two table boards are parallel, compares the values of the inclination angle sensor (31) and the inclination angle sensor (31 a) in real time in the lifting process of the lifter, and starts leveling control when the difference value is changed to be more than 5mm in height difference.

In the ascending process of the lifter, when the table top (P2) of the lifter is lower than the table top (P1), the leveling electromagnetic valve (6 a) is opened, and oil supplementing leveling is carried out on the auxiliary oil cylinder (13) of the main table.

In the descending process of the lifting machine, when the table top (P2) of the lifting machine is higher than the table top (P1), the leveling solenoid valve (6 a) is opened, and oil drainage leveling is carried out on the auxiliary oil cylinder (13) of the main table.

It should be understood that the above detailed description of the present invention is only for illustrating the present invention and is not limited by the technical solutions described in the embodiments of the present invention, and those skilled in the art should understand that the present invention can still be modified or equivalently replaced to achieve the same technical effects; as long as the use requirement is satisfied, the utility model is within the protection scope.

Claims

1. A sideslip structure comprises a sideslip bottom plate assembly (25-1), and is characterized in that the sideslip bottom plate assembly (25-1) is fixed on a main table top of a lifting machine through holes at four corners of the sideslip bottom plate assembly by screws;

2. The structure of the side sliding, according to the claim 1, characterized in that the side sliding plate (25-5) is provided with a hole in the middle, the first screw (25-12) passes through the hole, the bottom plate assembly (25-1) and the side sliding block (25-11) are screwed on the side sliding pin shaft (25-10), the bottom plate assembly (25-1) is provided with a frame (25-1-2) with a shoulder, the side sliding block (25-11) is arranged in the frame (25-1-2);

the side-slipping pin shaft (25-10) penetrates through a strip-shaped hole in the side-slipping sliding block (25-11), the lower ends of the two sides of the side-slipping sliding block (25-11) extend outwards to form a stop block (25-50), a baffle (25-13) extending towards the middle is arranged on the inner wall of the upper end of the shoulder, and the upper end face of the stop block (25-50) and the lower end face of the baffle are matched faces.

3. The structure of claim 1, wherein the side sliding bottom plate assembly (25-1) is provided with a side sliding sand rack (25-2), the side sliding sand rack (25-2) is provided with nylon balls (25-3) placing holes, the side sliding sand rack (25-2) is arranged between the side sliding plate (25-5) and the side sliding bottom plate assembly (25-1), the side sliding bottom plate assembly (25-1) is provided with an annular groove (25-40), and the nylon balls (25-3) are arranged in the annular groove (25-40).

4. A side-slipping structure according to claim 3, characterized in that the number of side-slipping scaffolds (25-2) is four, arranged in the transverse direction, and each side-slipping scaffold (25-2) is fixed to the side-slipping floor member (25-1) by 2 second screws (25-4).