CN113281028A - General type fork truck portal test bench - Google Patents

Abstract

The invention discloses a universal forklift mast test bed, which comprises: the device comprises a flat plate carrying assembly capable of moving along the ground, a gantry mounting seat used for fixing a horizontal part of a test gantry, a vertical mounting seat used for connecting a vertical part of the test gantry, a gantry inclination adjusting device used for adjusting an inclination angle required by the assembly of the vertical part, a gantry lifting protection frame used for preventing the test gantry from tipping, and a control device used for controlling the test gantry to perform corresponding experiment operation; the portal frame lifting protection frame is provided with a hollow part and a lifting channel, so that the test portal frame penetrates through the hollow part to be assembled with the portal frame mounting seat, and the vertical part can move along the lifting channel. The universal forklift portal frame performance test bed provided by the invention can improve the accuracy, the applicability and the safety of the forklift portal frame performance test bed.

Description

General type fork truck portal test bench

Technical Field

The invention relates to the technical field of lift fatigue test detection of a forklift gantry, in particular to a universal forklift gantry test bed.

Background

Nowadays, with the progress of society, the manufacturing is continuously improved, the product quality is also continuously promoted, the quality, the safety and the reliability of industrial vehicles are also improved following the spirit of the exquisite craftsman, the forklift is an industrial carrying vehicle, and the technical parameters of the forklift are used for measuring the structural characteristics and the working performance of the forklift. The forklift gantry test mainly tests the rated load capacity, the maximum lifting height, the gantry inclination angle, the oil cylinder lifting pressure, the gantry fatigue test and the like of the forklift.

However, when the performance test is performed on the forklift mast, a test vehicle needs to be stopped on a stable road surface to perform a rated lifting test and a maximum lifting height test, in the process of researching and developing a new forklift mast in the early period, the performance tests of the forklift mast are very dangerous tests, the newly researched and developed vehicle cannot completely guarantee the safety of the vehicle, and particularly, when the performance test is performed on an ultrahigh loading test, a great number of uncertain factors exist. In addition, the long-term lifting and descending operation of the portal frame cannot be directly completed manually in the fatigue test of the lifting and the lateral shifting of the portal frame. That is, no proper forklift mast performance test bed is available at the present stage, and the forklift mast performance test can not be accurately carried out.

Moreover, the installation state of the existing portal test bed for the portal is different from the installation state of the portal of an actual vehicle, so that the integrity and the accuracy of test data cannot be guaranteed easily, and whether the portal performance test meets the design requirements or not cannot be judged.

In conclusion, how to improve the applicability and accuracy of the performance test bed for the forklift mast is a problem to be solved urgently by technical personnel in the field at present.

Disclosure of Invention

In view of this, the invention aims to provide a universal forklift mast performance test bed, which can effectively improve the accuracy, the applicability and the safety of the forklift mast performance test bed.

In order to achieve the above purpose, the invention provides the following technical scheme:

a general type fork truck portal test bench includes: the test device comprises a flat plate carrying assembly capable of moving along the ground, a gantry mounting seat used for fixing a horizontal part of a test gantry, a vertical mounting seat used for connecting a vertical part of the test gantry, a gantry inclination adjusting device used for adjusting an inclination angle required by the assembly of the vertical part, a gantry lifting protection frame used for preventing the test gantry from tipping, and a control device used for controlling the test gantry to perform corresponding experiment operation;

the utility model discloses a test portal frame, including portal frame, vertical mount pad, controlling means, portal frame slope adjusting device, portal frame mount pad, vertical mount pad, controlling means all locates on the dull and stereotyped transport assembly, portal frame slope adjusting device's one end with vertical mount pad is connected, the other end with the ear hole of vertical portion is connected, the portal plays to rise and protects the frame and is equipped with fretwork portion and lift passageway, so that experimental portal frame passes fretwork portion with the assembly of portal frame mount pad, be convenient for vertical portion is in the lift passageway internal motion.

Preferably, the flatbed carrying assembly comprises a vehicle body, two steering wheels and two directional wheels capable of braking, wherein the steering wheels and the directional wheels are arranged below the vehicle body.

Preferably, the vehicle body comprises a front bottom plate, a rear bottom plate and a transition plate for connecting the front bottom plate and the rear bottom plate, the front bottom plate is provided with U-shaped grooves for mounting different types of horizontal parts, and the rear bottom plate is used for placing a hydraulic station of the control device;

the front bottom plate and the rear bottom plate are provided with reinforcing ribs to ensure that the vehicle body is in a stable state during testing, and the side part of the rear bottom plate is provided with a hook used for being connected with a trailer.

Preferably, the gantry mounting seat comprises two cylindrical barrel seats respectively arranged in the U-shaped groove and a cylindrical barrel clamped with the horizontal part, the cylindrical barrel seats can move back and forth along the U-shaped groove, and the cylindrical barrel is horizontally arranged on the two cylindrical barrel seats.

Preferably, the cylindrical barrel seat comprises a seat frame, a vertical plate, a pin plate and a reinforcing plate for reinforcing the stability of the vertical plate, the seat frame is provided with a through hole matched with the U-shaped groove, the vertical plate is triangular, the top of the vertical plate is provided with an arc-shaped groove for clamping with the end part of the cylindrical barrel, the vertical plate is arranged on the seat frame, the reinforcing plate is arranged on one side of the vertical plate, and the pin plate is horizontally arranged between the reinforcing plate and the vertical plate;

the pin plate is provided with a threaded hole matched with a cylinder pin used for locking the cylindrical cylinder, round holes matched with the cylinder pin are formed in two sides of the cylindrical cylinder, so that the cylinder pin can penetrate through the cylindrical cylinder and is fixed with the pin plate, and a handle used for disassembling the cylindrical cylinder is arranged at the end part of the cylindrical cylinder.

Preferably, the vertical mounting base comprises a left mounting base, a right mounting base, a cross beam plate and a parking hand brake, the left mounting base and the right mounting base are symmetrically arranged, the cross beam plate is horizontally arranged at the top of the left mounting base and the right mounting base, the parking hand brake is used for controlling the braking of the directional wheel, the left mounting base and the right mounting base are formed by splicing a base plate, a left side plate, a right side plate and a front sealing plate, the base plate is arranged on the U-shaped groove, the left side plate and the right side plate are respectively arranged on the left side and the right side of the base plate, the front sealing plate is arranged between the left side plate and the right side plate, and two sides of the cross beam plate are respectively provided with a bearing, a lead screw embedded in the bearing and a turntable used for driving the lead screw to rotate;

the front side of preceding shrouding is equipped with the upper and lower baffle of symmetric distribution in order to form the guide rail, and the pull ring seat can horizontal slip in the guide rail, the pull ring seat is equipped with and is used for the installation portal slope adjusting device's ear buckle, the baffle is equipped with the first bolt hole that is used for the fixed mounting back plate and is used for pressing from both sides tightly from both sides the second bolt hole of pull ring seat from top to bottom, the rear side of preceding shrouding is equipped with the back plate, the back plate be equipped with be used for with screw thread assorted nut on the lead screw.

Preferably, the portal inclination adjusting device comprises a left-handed bolt connected with the pull ring seat, a right-handed bolt connected with the lug hole, an inclined bolt sleeve connected with the left-handed bolt and the right-handed bolt, and a locking nut.

Preferably, a displacement sensor is arranged at the top of the gantry lifting protection frame to detect the lifting height of the test gantry.

Preferably, the control device comprises a hydraulic station and a PC control center, wherein the hydraulic station is used for providing hydraulic power required by the test, and the PC control center is connected with the hydraulic station so as to control the operation of the hydraulic station to perform the related test and monitor and record various test data.

Preferably, a cooling system is arranged on the hydraulic station, when the temperature of hydraulic oil of the hydraulic station exceeds a set value, the cooling system can be started to cool, and when the temperature of the hydraulic oil is lower than or equal to the set value, the cooling system can stop running.

And the PC control center is integrated with a safety control system, and when the test portal has the phenomena of oil pipe burst, portal tipping or portal channel steel damage in the test process, the safety control system can control the hydraulic station to stop running.

When the universal forklift mast frame test bed provided by the invention is used, firstly, a test mast frame can penetrate through the hollow-out part of the mast frame lifting protection frame, and the horizontal part of the test mast frame is fixedly arranged on the mast frame mounting seat; then, connecting the ear buckles of the vertical part and the vertical mounting seat with a portal inclination adjusting device, and adjusting the inclination angle of the vertical part during assembly so as to ensure that the test portal is in a state required by a test; then, a balance weight used by the test portal is placed above a fork of the test portal, the flat plate carrying assembly is dragged to a corresponding test site by using a trailer, and the flat plate carrying assembly is controlled to be in a braking state after reaching the test site; finally, the control device can be used for driving the test gantry to perform corresponding experimental operations, such as lifting, descending, lateral shifting, forward and backward tilting, fatigue testing and the like of the test gantry, so as to obtain various test data of the test gantry.

Moreover, the universal forklift mast test bed provided by the invention can effectively simulate the mast mounting state of an actual vehicle so as to improve the accuracy of test measurement data. In addition, the performance test of the forklift gantry can be completed only by the gantry assembly of the forklift without the limitation of a field and carrying out the gantry performance test on the whole forklift, so that the operation is simplified, and the working efficiency is improved.

In addition, the universal forklift mast test bed provided by the invention can be used for carrying out installation and test on masts of different models, and certain fatigue test can be carried out on some more complex mast accessory products. The gantry lifting protection frame of the device has a safety protection effect, and can effectively reduce the occurrence of test accidents.

In conclusion, the universal forklift mast performance test bed provided by the invention can effectively improve the accuracy, the applicability and the safety of the forklift mast performance test bed.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic diagram of a test bed and a test mast for a universal forklift mast according to the present invention;

FIG. 2 is a schematic structural view of a test gantry when the test gantry does not enter a gantry lifting frame;

FIG. 3 is a schematic structural view of the test gantry without a counterweight;

FIG. 4 is a schematic structural view of a vehicle body;

FIG. 5 is a front view of FIG. 4;

FIG. 6 is a top view of FIG. 4;

FIG. 7 is a schematic structural view of a mast tilt adjustment apparatus;

FIG. 8 is a schematic view of a gantry mount;

FIG. 9 is a front view of FIG. 8;

FIG. 10 is a top view of FIG. 8;

FIG. 11 is a side view of FIG. 8;

FIG. 12 is a front view of the vertical mount;

FIG. 13 is a front view of the vertical mount from another perspective;

FIG. 14 is a top view of the vertical mount;

fig. 15 is a side view of the vertical mount.

In fig. 1-15:

1 is a flat plate carrying assembly, 11 is a vehicle body, 111 is a front bottom plate, 112 is a rear bottom plate, 113 is a transition plate, 114 is a reinforcing rib, 115 is a hook, 12 is a steering wheel, 13 is a directional wheel, 2 is a test gantry, 3 is a gantry mounting seat, 31 is a cylindrical barrel seat, 311 is a seat frame, 312 is a vertical plate, 313 is a pin plate, 314 is a reinforcing plate, 32 is a cylindrical barrel, 33 is a barrel pin, 34 is a handle, 4 is a vertical mounting seat, 41 is a left and right mounting seat, 411 is a base plate, 412 is a left side plate, 413 is a right side plate, 414 is a front sealing plate, 42 is a cross beam plate, 421 is a screw rod, 422 is a rotary table, 43 is a parking hand brake, 44 is an upper and lower baffle plate, 45 is a pull ring seat, 451 is an ear buckle plate, 46 is a rear plate, 5 is a gantry inclination adjusting device, 51 is a left-handed bolt, 52 is a right-handed bolt, 53 is an inclined bolt sleeve, 54 is a locking nut, 6 is a gantry lifting, 8 is a counterweight, 9 is a fork.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The core of the invention is to provide a universal forklift portal frame test bed, which can effectively improve the accuracy, the applicability and the safety of the forklift portal frame performance test bed.

Please refer to fig. 1 to fig. 15.

This particular embodiment provides a general type fork truck portal test bench, includes: the test device comprises a flat plate carrying assembly 1 capable of moving along the ground, a gantry mounting seat 3 used for fixing a horizontal part of a test gantry 2, a vertical mounting seat 4 used for connecting a vertical part of the test gantry 2, a gantry inclination adjusting device 5 used for adjusting an inclination angle required by the assembly of the vertical part, a gantry lifting protective frame 6 used for preventing the test gantry 2 from tipping, and a control device used for controlling the test gantry 2 to perform corresponding experiment operation; the portal mounting seat 3, the vertical mounting seat 4 and the control device are all arranged on the flat plate carrying assembly 1, one end of the portal inclination adjusting device 5 is connected with the vertical mounting seat 4, the other end of the portal inclination adjusting device is connected with the ear hole of the vertical part, and the portal lifting protection frame 6 is provided with a hollow part and a lifting channel, so that the test portal 2 penetrates through the hollow part to be assembled with the portal mounting seat 3, and the vertical part can move along the lifting channel.

The shapes, structures, positions and the like of the flat plate carrying assembly 1, the gantry mounting seat 3, the vertical mounting seat 4, the gantry inclination adjusting device 5, the gantry lifting protective frame 6 and the control device can be determined according to actual conditions and actual requirements in the actual application process.

When the universal forklift mast frame test bed provided by the invention is used, firstly, the test mast frame 2 can penetrate through the hollow-out part of the mast frame lifting protective frame 6, and the horizontal part of the test mast frame 2 is fixedly arranged on the mast frame mounting seat 3; then, connecting the ear buckles of the vertical part and the vertical mounting seat 4 with a portal frame inclination adjusting device 5, and adjusting the inclination angle of the vertical part during assembly so as to ensure that the test portal frame 2 is in a state required by a test; then, a balance weight 8 used by the test gantry 2 is placed above a fork 9 of the test gantry 2, the flat plate carrying assembly 1 is dragged to a corresponding test site by using a trailer, and the flat plate carrying assembly 1 is controlled to be in a braking state after reaching the test site; finally, the control device can be used to drive the test gantry 2 to perform corresponding experimental operations, such as lifting, descending, lateral shifting, forward and backward tilting, fatigue testing and the like of the test gantry 2, so as to obtain various test data of the test gantry 2.

Moreover, the universal forklift mast test bed provided by the invention can effectively simulate the mast mounting state of an actual vehicle so as to improve the accuracy of test measurement data. In addition, the performance test of the forklift gantry can be completed only by the gantry assembly of the forklift without the limitation of a field and carrying out the gantry performance test on the whole forklift, so that the operation is simplified, and the working efficiency is improved.

In addition, the universal forklift mast test bed provided by the invention can be used for carrying out installation and test on masts of different models, and certain fatigue test can be carried out on some more complex mast accessory products. The gantry lifting protective frame 6 of the device has a safety protection effect, and the occurrence of test accidents can be effectively reduced.

In conclusion, the universal forklift mast performance test bed provided by the invention can effectively improve the accuracy, the applicability and the safety of the forklift mast performance test bed.

On the basis of the above-mentioned embodiment, it is preferable that the flatbed carrying assembly 1 includes a vehicle body 11, two steering wheels 12 and two steerable wheels 13 that can be braked, and the steering wheels 12 and the steerable wheels 13 are both provided below the vehicle body 11.

The directional wheel 13 capable of braking means that the directional wheel 13 is provided with a parking hand brake 43, and the hand cable is tightened through the parking hand brake 43, so that the brake disc can be locked, and the directional wheel 13 is braked. The steering wheel 12 is provided to meet the steering requirements of the entire apparatus so that the vehicle body 11 is smoothly towed to other sites. Triangular pyramids may be provided at the bottoms of the steering wheels 12 and the directional wheels 13 after the vehicle body 11 is moved to a preset position to prevent the vehicle from slipping. Set up dull and stereotyped transport assembly 1 like this and can effectively simulate actual fork truck's removal condition to make test data more accurate, also make the removable experimental place of experimental portal 2, no longer receive the place restriction.

It should also be noted that two steering wheels 12 with the same structure can be respectively installed on the left and right sides of the lower portion of the rear end of the vehicle body 11, each steering wheel 12 mainly comprises an auxiliary wheel support, an auxiliary wheel, a large bearing and a small bearing, a small bearing can be arranged in the middle of each auxiliary wheel, a clamping groove is formed in the middle of each small bearing, and the small bearings are installed and fixed on the auxiliary wheel supports through the clamping grooves. In addition, two directional wheels 13 having the same structure may be installed at both sides of the front end of the vehicle body 11, respectively, and the directional wheels 13 may be further provided with a brake assembly device that can tighten a hand cable through a parking hand brake 43 to brake the directional wheels 13.

Preferably, the vehicle body 11 comprises a front bottom plate 111, a rear bottom plate 112 and a transition plate 113 for connecting the front bottom plate 111 and the rear bottom plate 112, wherein the front bottom plate 111 is provided with a U-shaped groove for installing horizontal parts of different types, and the rear bottom plate 112 is used for placing the hydraulic station 7 of the control device; the front bottom plate 111 and the rear bottom plate 112 are both provided with reinforcing ribs 114 to ensure that the vehicle body 11 is in a stable state during a test, and the side portion of the rear bottom plate 112 is provided with a hook 115 for connecting with a trailer so that the vehicle body 11 is smoothly towed to other places by the trailer device through the hook 115.

It should be noted that the front bottom plate 111 can be set to be a thick steel plate, four U-shaped grooves are formed above the front bottom plate 111, so that the test gantries 2 of different models can be mounted, and the test gantries 2 can be adjusted by moving back and forth along the U-shaped grooves, so that the test gantries 2 of various models can be mounted in place.

Can set up back bottom plate 112 into rectangular shaped plate to steadily place controlling means's hydraulic pressure station 7, moreover, set up hydraulic pressure station 7 at the rear portion of automobile body 11, be for the whole weight with the help of hydraulic pressure station 7, whole test bench is more stable when guaranteeing to carry out the portal and rise the experiment. The transition plate 113 is disposed between the front base plate 111 and the rear base plate 112, and the front base plate 111, the transition plate 113, and the rear base plate 112 may be sequentially connected by welding.

In addition, triangular ribs 114 may be provided on both front and back surfaces of the front floor 111 and the rear floor 112 to secure the vehicle body 11 in a stable state during the test and to effectively secure the test strength during the test. A hook 115 may be provided at the rear side of the rear floor 112 so that the vehicle body 11 can be towed to other test sites by some simple tool car.

Preferably, the gantry mounting base 3 includes two cylindrical bases 31 respectively disposed in the U-shaped groove and a cylindrical barrel 32 for being clamped with the horizontal portion, the cylindrical bases 31 can move back and forth along the U-shaped groove, and the cylindrical barrel 32 is horizontally disposed on the two cylindrical bases 31.

It should be noted that the gantry mounting base 3 can be directly fixed on the vehicle body 11 through bolts, and the gantry mounting base 3 is mainly used for fixedly mounting the test gantry 2 and bearing the weight of the test gantry 2 during the test. Moreover, the cylindrical barrel seat 31 can realize the back-and-forth movement of the test door frame 2 when moving back and forth along the U-shaped groove, so that the test door frames 2 of different models can be installed in place.

Preferably, the cylindrical barrel seat 31 includes a seat frame 311, a vertical plate 312, a pin plate 313 and a reinforcing plate 314 for reinforcing the stability of the vertical plate 312, the seat frame 311 is provided with a through hole matching with the U-shaped groove, the vertical plate 312 is triangular, the top of the vertical plate 312 is provided with an arc-shaped groove for being clamped with the end of the cylindrical barrel 32, the vertical plate 312 is arranged on the seat frame 311, one side of the vertical plate 312 is provided with the reinforcing plate 314, and the pin plate 313 is horizontally arranged between the reinforcing plate 314 and the vertical plate 312; the pin plate 313 is provided with a threaded hole matched with the cylinder pin 33 for locking the cylinder 32, round holes matched with the cylinder pin 33 are arranged on two sides of the cylinder 32, so that the cylinder pin 33 can pass through the cylinder 32 to be fixed with the pin plate 313, and the end part of the cylinder 32 is provided with a handle 34 for disassembling the cylinder 32.

The seat frame 311, the vertical plate 312, and the two reinforcing plates 314 may be welded together. A cylinder 32 is formed by a cylindric lock processing, the cylinder diameter in the middle of the cylinder 32 and the arc wall size phase-match of experimental portal 2, moreover, can set up in the both sides of cylinder 32 with riser 312 assorted cylinder, set up in the outside of cylinder with section of thick bamboo round hole 33 assorted, so that section of thick bamboo round hole 33 can pass behind the cylinder with the cotter 313 fixed, in addition, can set up a handle 34 in the outside of cylinder, so that lift by crane the change with cylinder 32 through handle 34, in order to join in marriage different cylinders 32, thereby ensure that cylinder 32 can match the experimental portal 2 of installing different models.

On the basis of the above embodiment, preferably, the vertical mounting base 4 includes left and right mounting bases 41 symmetrically arranged, a beam plate 42 horizontally arranged on the top of the left and right mounting bases 41, and a parking hand brake 43 for controlling braking of the directional wheel 13, the left and right mounting bases 41 are formed by splicing a base plate 411, a left side plate 412, a right side plate 413, and a front sealing plate 414, the base plate 411 is arranged on the U-shaped groove, the left side plate 412 and the right side plate 413 are respectively arranged on the left and right sides of the base plate 411, the front sealing plate 414 is arranged between the left side plate 412 and the right side plate 413, and two sides of the beam plate 42 are respectively provided with a bearing, a screw 421 embedded in the bearing, and a rotary table 422 for driving the screw 421 to rotate; the front side of preceding shrouding 414 is equipped with the upper and lower baffle 44 of symmetric distribution in order to form the guide rail, and pull ring seat 45 can be in the guide rail horizontal slip, and pull ring seat 45 is equipped with the ear buckle 451 that is used for installing portal slope adjusting device 5, and upper and lower baffle 44 is equipped with the first bolt hole that is used for fixed mounting back plate 46 and is used for the second bolt hole of cramping pull ring seat 45, and the rear side of preceding shrouding 414 is equipped with back plate 46, and back plate 46 is equipped with the screw thread assorted nut that is used for on with lead screw 421. Therefore, the up-down flap 44 and the rear plate 46 have an interlocking effect, and when the dial 422 is rotated, the pull tab holder 45, the up-down flap 44 and the rear plate 46 can be moved up and down in accordance with the rotation of the screw 421.

It should be noted that, when the second bolt holes of the upper and lower baffles 44 are not locked with the bolts, the pull ring seat 45 can slide left and right in the guide rail to adjust the position of the pull ring seat 45. After the first bolt hole and the second bolt hole of the upper and lower baffles 44 are locked by bolts, the pull ring seat 45 can be adjusted up and down along with the rotation of the screw 421, so as to ensure that the ear buckle plate 451 of the pull ring seat 45 is accurately assembled with the test portal 2 with different heights. Moreover, the thickness of the pull ring holder 45 can be set to be thicker than the depth of the guide rail, so that the pull ring holder 45 cannot be loosened when the bolt in the second bolt hole is tightened. Moreover, two ear fastening plates 451 can be arranged on the pull ring seat 45, wherein one ear fastening plate 451 is provided with a through hole, the other ear fastening plate 451 is provided with a threaded hole, a bolt shaft is arranged between the two ear fastening plates 451, and the two ear fastening plates 451 are mainly used for installing the portal inclination adjusting device 5.

It should be noted that the left and right mounting seats 41 may be directly mounted above the vehicle body 11 by bolts, and a parking hand brake 43 may be mounted on the side of the left and right mounting seats 41 to control the braking operation of the directional wheel 13. The parking hand brake 43 is mainly used for locking the directional wheel 13 during parking, and ensures that the whole device is in a stable state in the portal test process.

A through hole matching with the U-shaped groove of the front bottom plate 111 of the vehicle body 11 may be provided in the base plate 411, the left and right side plates 412 and 413 may be welded to the left and right sides of the base plate 411, and the front cover plate 414 may be welded to the left and right side plates 412 and 413. In addition, the cross beam plate 42 can be fixed on the left and right mounting seats 41 through bolts, the rotary table 422 and the screw rod 421 are assembled into an integral structure, and the screw rod 421 can be driven to rotate freely by manually rotating the rotary table 422.

Preferably, the mast tilt adjusting means 5 includes a left-hand bolt 51 for coupling with the tab holder 45, a right-hand bolt 52 for coupling with the ear hole, a tilt bolt housing 53 for coupling the left-hand bolt 51 and the right-hand bolt 52, and a lock nut 54, the left-hand bolt 51 and the right-hand bolt 52 being moved toward or away from each other by rotating the tilt bolt housing 53, the lock nut 54 being fitted over an end of the tilt bolt housing 53 to lock the tilt bolt housing 53.

Therefore, by rotating the inclined bolt sleeve 53, the left-handed bolt 51 and the right-handed bolt 52 can be controlled to extend or shorten so as to drive the test gantry 2 to perform angle adjustment, and after the test gantry 2 is adjusted to a proper position, the inclined bolt sleeve 53 can be locked by the locking nut 54 so as to prevent the test gantry 2 from continuing to rotate.

Preferably, a displacement sensor is arranged at the top of the gantry lifting protective frame 6 to detect the lifting height of the test gantry 2.

It should be noted that the gantry lifting protection frame 6 can be set as a steel pipe arranged on the front side of the test gantry 2, one side of the gantry lifting protection frame 6 is designed to be hollow, such as a U-shaped hollow, so that the lifting test of the test gantry 2 from the hollow is facilitated, and the tilting accident of the test gantry 2 during the test can be avoided.

It should be further noted that the displacement sensor arranged at the top of the gantry lifting protective frame 6 can be connected with the control device, so that lifting height data of the test gantry 2 detected by the displacement sensor is transmitted into the control device, the control device can conveniently control the position and the state of the test gantry 2 in real time, and corresponding control operation is performed, so that the safety of the test gantry 2 in the test process is ensured.

On the basis of the above embodiment, preferably, the control device includes a hydraulic station 7 for providing hydraulic power required for the test and a PC control center, and the PC control center is connected with the hydraulic station 7 to control the operation of the hydraulic station 7 to perform the related test and monitor and record various test data.

The hydraulic station 7 may be mounted and fixed on the rear floor 112 of the vehicle body 11, and the hydraulic station 7 is mainly set to provide hydraulic power required by the test for the gantry during the test, and the hydraulic power includes required pressure, flow rate and the like, so as to ensure that the test gantry 2 can accurately complete various tests. The PC control center may be provided as an integrated structure with the hydraulic station 7 so that the PC control center can directly control the hydraulic station 7. For example, the PC control center can directly control and monitor the pressure, temperature, oil supply amount, and oil supply speed of the hydraulic station 7, and can monitor the inclination angle, the lifting height, and the like of the test gantry 2 in real time to accurately read each parameter during the test. In addition, the PC control center can set the lifting time of the test gantry 2 and record the fatigue test process, the test times and the like of the test gantry 2 so as to obtain various test data of the test gantry 2.

Preferably, the hydraulic station 7 is provided with a cooling system, when the temperature of the hydraulic oil in the hydraulic station 7 exceeds a set value, the cooling system can be started to cool, and when the temperature of the hydraulic oil is lower than or equal to the set value, the cooling system can stop running; the PC control center is integrated with a safety control system, and when the oil pipe bursts, the door frame tips or the door frame channel steel is damaged in the test process of the test door frame 2, the safety control system can control the hydraulic station 7 to stop running.

Thus, when the temperature of the hydraulic oil exceeds the set value, the cooling system may be activated, for example, the cooling fan may be activated to cool the hydraulic oil, and when the temperature of the hydraulic oil is less than or equal to the set value, the cooling fan may be stopped. In addition, when the portal is overturned due to the phenomena of oil pipe burst, damage of a portal inclining device and the like in the test process, the safety control system can control the hydraulic station 7 to stop running. And when the portal channel steel is damaged, the hydraulic station 7 can stop working immediately to prevent secondary accidents.

In order to further explain the use method of the universal forklift mast test bed provided by the invention, the following description is given by way of example.

When the universal forklift mast test bed is used for carrying out performance test on the test mast 2, the method can be carried out according to the following steps:

1. the lower end of a test portal 2 is fixedly arranged on a portal mounting seat 3, and an ear hole on the test portal 2 is fixedly arranged on a portal inclination adjusting device 5;

2. placing a balance weight 8 used by the test portal 2 on a pallet fork 9 of the test portal 2, dragging the whole universal forklift portal test bed to a corresponding test field by using a trailer, and adjusting a parking hand brake 43 to enable a directional wheel 13 to be in a braking state;

3. mounting parking triangular cones on the front side and the rear side of the directional wheel 13 and the steering wheel 12 to ensure that the universal forklift gantry test bed is in a stable state during testing;

4. the angle adjusting instrument of the PC control center is reset to zero and then is placed on the rear side of the test portal 2, the angle of the test portal 2 is checked through the PC control center, and then the installation angle of the test portal 2 is adjusted through the portal inclination adjusting device 5, so that the test portal 2 is ensured to be in a state required by a test;

5. the displacement sensor at the top of the gantry lifting guard frame 6 is reset to zero, then the high-pressure oil pipe of the hydraulic station 7 is connected to the oil inlet and outlet of the lifting oil cylinder of the test gantry 2, and if a side shift test is required, the gantry side shift test can be carried out only by connecting the high-pressure oil pipe of the hydraulic station 7 to the oil inlet and outlet of the side shift cylinder of the test gantry 2; if a front-back inclination test is required, the gantry inclination test can be carried out only by replacing the inclination adjusting device with an inclination oil cylinder and connecting a high-pressure oil pipe of the hydraulic station 7 to an oil inlet and an oil outlet of the inclination oil cylinder of the test gantry 2;

6. a series of portal performance tests such as hoisting, descending, lateral shifting, front-back inclining and fatigue tests of the portal are completed through the PC control center, and various test data are monitored and recorded.

The universal forklift mast frame test bed provided by the invention can ensure the safety, integrity and accuracy of a forklift mast frame performance test, and has safety protection measures when a rated lifting test, a maximum lifting height test and a fatigue test of a mast frame are carried out. The invention also considers the buffering and vibration damping effect of the tire, so that the test data is closer to the actual situation and more conforms to the corresponding test standard. This device not only can improve experimental measured data's accuracy, more can solve different models, different series's the experimental portal 2 plays to rise the experiment, simultaneously, still solves some conventional portal experiments, moreover, can also not receive the restriction in place, does not need the whole car to carry out the portal performance test, only needs fork truck portal assembly can accomplish a series of fork truck portal performance test, can simplify operation like this, great degree improvement work efficiency.

It should be noted that the first bolt hole and the second bolt hole are mentioned in the present application, wherein the first and the second are only for distinguishing the position difference and are not in the following order.

It should be noted that the directions and positional relationships indicated by "up and down", "left and right" in the present application are based on the directions and positional relationships shown in the drawings, and are only for the convenience of simplifying the description and facilitating the understanding, but do not indicate or imply that the device or element referred to must have a specific direction, be configured and operated in a specific direction, and thus, should not be construed as limiting the present invention.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. Any combination of all embodiments provided by the present invention is within the scope of the present invention, and will not be described herein.

The general forklift mast test bed provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims (10)

1. The utility model provides a general type fork truck portal test bench which characterized in that includes: the test device comprises a flat plate carrying assembly (1) capable of moving along the ground, a gantry mounting seat (3) used for fixing a horizontal part of a test gantry (2), a vertical mounting seat (4) used for connecting a vertical part of the test gantry (2), a gantry inclination adjusting device (5) used for adjusting an inclination angle required by the assembly of the vertical part, a gantry lifting protection frame (6) used for avoiding the test gantry (2) from tipping, and a control device used for controlling the test gantry (2) to perform corresponding experiment operation;

portal mount pad (3), vertical mount pad (4) controlling means all locates on dull and stereotyped transport assembly (1), the one end of portal slope adjusting device (5) with vertical mount pad (4) are connected, the other end with the ear hole of vertical portion is connected, the portal plays to rise and protects frame (6) and is equipped with fretwork portion and lift passageway, so that experimental portal (2) pass fretwork portion with portal mount pad (3) assembly, be convenient for vertical portion is in the lift passageway internal motion.

2. Universal forklift mast test stand according to claim 1, characterized in that the flatbed carrying assembly (1) comprises a body (11), two steering wheels (12) and two brakable orienting wheels (13), the steering wheels (12) and the orienting wheels (13) being both provided under the body (11).

3. The universal forklift mast test stand according to claim 2, characterized in that the body (11) comprises a front floor (111), a rear floor (112) and a transition plate (113) for connecting the front floor (111) and the rear floor (112), the front floor (111) is provided with a U-shaped groove for mounting different types of the horizontal portions, and the rear floor (112) is used for placing the hydraulic station (7) of the control device;

the front bottom plate (111) and the rear bottom plate (112) are provided with reinforcing ribs (114) to ensure that the vehicle body (11) is in a stable state during a test, and a hook (115) used for being connected with a trailer is arranged on the side portion of the rear bottom plate (112).

4. The universal forklift mast test bed according to claim 3, wherein the mast mounting base (3) comprises two cylindrical bases (31) respectively arranged in the U-shaped groove and a cylindrical barrel (32) clamped with the horizontal part, the cylindrical bases (31) can move back and forth along the U-shaped groove, and the cylindrical barrel (32) is horizontally arranged on the two cylindrical bases (31).

5. The universal forklift mast test bed according to claim 4, wherein the cylindrical tube base (31) comprises a seat frame (311), a vertical plate (312), a pin plate (313) and a reinforcing plate (314) for reinforcing the stability of the vertical plate (312), the seat frame (311) is provided with a through hole matched with the U-shaped groove, the vertical plate (312) is in a triangular shape, the top of the vertical plate (312) is provided with an arc-shaped groove for clamping with the end of the cylindrical tube (32), the vertical plate (312) is arranged on the seat frame (311), the reinforcing plate (314) is arranged on one side of the vertical plate (312), and the pin plate (313) is horizontally arranged between the reinforcing plate (314) and the vertical plate (312);

the pin plate (313) is provided with a threaded hole matched with a cylinder pin (33) used for locking the cylindrical cylinder (32), round holes matched with the cylinder pin (33) are formed in two sides of the cylindrical cylinder (32) so that the cylinder pin (33) can penetrate through the cylindrical cylinder (32) and be fixed with the pin plate (313), and a handle (34) used for detaching the cylindrical cylinder (32) is arranged at the end part of the cylindrical cylinder (32).

6. The universal forklift mast test stand according to claim 3, wherein the vertical mounting base (4) comprises a left and a right mounting base (41) which are symmetrically arranged, a beam plate (42) which is horizontally arranged on the top of the left and the right mounting base (41), and a parking hand brake (43) for controlling the brake of the directional wheel (13), the left and right mounting seats (41) are formed by splicing a base plate (411), a left side plate (412), a right side plate (413) and a front sealing plate (414), the base plate (411) is arranged on the U-shaped groove, the left side plate (412) and the right side plate (413) are respectively arranged at the left side and the right side of the base plate (411), the front sealing plate (414) is arranged between the left side plate (412) and the right side plate (413), bearings, a screw rod (421) embedded in the bearings and a rotary table (422) for driving the screw rod (421) to rotate are respectively arranged on two sides of the cross beam plate (42);

the front side of preceding shrouding (414) is equipped with upper and lower baffle (44) of symmetric distribution in order to form the guide rail, and pull ring seat (45) can the horizontal slip in the guide rail, pull ring seat (45) are equipped with and are used for the installation ear buckle plate (451) of portal slope adjusting device (5), baffle (44) are equipped with the first bolt hole that is used for fixed mounting back plate (46) and are used for pressing from both sides tightly about, the rear side of preceding shrouding (414) is equipped with back plate (46), back plate (46) be equipped with be used for with screw thread assorted nut on lead screw (421).

7. The universal type forklift mast test stand according to claim 6, characterized in that the mast inclination adjusting device (5) comprises a left-handed bolt (51) for being connected with the bail base (45), a right-handed bolt (52) for being connected with the ear hole, an inclined bolt sleeve (53) for connecting the left-handed bolt (51) and the right-handed bolt (52), and a lock nut (54), wherein the left-handed bolt (51) and the right-handed bolt (52) can be made to approach or separate from each other by rotating the inclined bolt sleeve (53), and the lock nut (54) is sleeved on the end of the inclined bolt sleeve (53) to lock the inclined bolt sleeve (53).

8. The universal forklift mast test stand according to any one of claims 1 to 7, characterized in that the mast lifting guard (6) is provided with a displacement sensor at the top to detect the lifting height of the test mast (2).

9. The universal forklift mast test stand according to any one of claims 1 to 7, characterized in that the control device comprises a hydraulic station (7) for providing hydraulic power required for the test and a PC control center, the PC control center is connected with the hydraulic station (7) to control the hydraulic station (7) to operate for carrying out the related test and monitoring and recording various test data.

10. The universal forklift mast test stand according to claim 9, characterized in that the hydraulic station (7) is provided with a cooling system, the cooling system can start cooling when the temperature of the hydraulic oil of the hydraulic station (7) exceeds a set value, and the cooling system can stop running when the temperature of the hydraulic oil is lower than or equal to the set value;

and a safety control system is integrated in the PC control center, and when the oil pipe bursts, the door frame tips or door frame channel steel damages in the test process of the test door frame (2), the safety control system can control the hydraulic station (7) to stop running.

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