A universal forklift mast test bench

Abstract

The present invention discloses a universal forklift gantry test bench, comprising: a flat transport assembly movable along the ground, a gantry mounting seat for fixing the horizontal part of the test gantry, a vertical mounting seat for connecting the vertical part of the test gantry, a gantry tilt adjustment device for adjusting the tilt angle required for the assembly of the vertical part, a gantry lifting guard frame for preventing the test gantry from tipping over, and a control device for controlling the test gantry to perform corresponding experimental operations; the gantry mounting seat, the vertical mounting seat, and the control device are all arranged on the flat transport assembly, one end of the gantry tilt adjustment device is connected to the vertical mounting seat, and the other end is connected to the ear hole of the vertical part, and the gantry lifting guard frame is provided with a hollow part and a lifting channel, so that the test gantry passes through the hollow part to be assembled with the gantry mounting seat, and the vertical part is convenient to move along the lifting channel. The universal forklift gantry test bench provided by the present invention can improve the accuracy, applicability, and safety of the forklift gantry performance test bench.

Description

Technical Field

[0001] The invention relates to the technical field of forklift gantry lifting fatigue test detection, and more specifically to a universal forklift gantry test bench. Background Art

[0002] Nowadays, with the progress of society, the manufacturing industry is constantly improving, and product quality is also constantly improving. Following the spirit of craftsmanship of striving for excellence, the quality, safety and reliability of industrial vehicles are also improving. Forklifts are industrial handling vehicles, and the technical parameters of forklifts are used to measure the structural characteristics and working performance of forklifts. Among them, the forklift mast test mainly tests the rated lifting weight, maximum lifting height, mast inclination angle, cylinder lifting pressure, mast fatigue test, etc. of the forklift.

[0003] However, when performing performance tests on forklift masts, the test vehicle must be parked on a stable road surface to perform rated lifting tests and maximum lifting height tests. In the early stages of new vehicle development, these forklift mast performance tests are very dangerous tests. Newly developed vehicles cannot fully guarantee the safety of the vehicles, especially when conducting ultra-high load tests, there are many uncertainties. In addition, when performing fatigue tests on mast lifting and lateral movement, the long-term lifting and lowering operations of the mast cannot be completed manually. In other words, there is no suitable forklift mast performance test bench at this stage, and forklift mast performance tests cannot be accurately performed.

[0004] Moreover, the installation status of the gantry on the existing gantry test bench is different from the installation status of the gantry on the actual vehicle, which may easily lead to the inability to ensure the integrity and accuracy of the test data, and it is even more impossible to determine whether the gantry performance test meets the design requirements.

[0005] In summary, how to improve the applicability and accuracy of the forklift gantry performance test bench is a problem that needs to be urgently solved by technical personnel in this field. Summary of the invention

[0006] In view of this, an object of the present invention is to provide a universal forklift mast test bench, which can effectively improve the accuracy, applicability and safety of the forklift mast performance test bench.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] A universal forklift gantry test bench, comprising: a flatbed transport assembly movable along the ground, a gantry mounting seat for fixing the horizontal portion of the test gantry, a vertical mounting seat for connecting the vertical portion of the test gantry, a gantry tilt adjustment device for adjusting the tilt angle required for assembly of the vertical portion, a gantry lifting guard frame for preventing the test gantry from tipping over, and a control device for controlling the test gantry to perform corresponding experimental operations;

[0009] The gantry mounting seat, the vertical mounting seat and the control device are all arranged on the flatbed transport assembly. One end of the gantry tilt adjustment device is connected to the vertical mounting seat, and the other end is connected to the ear hole of the vertical part. The gantry lifting guard frame is provided with a hollow part and a lifting channel to facilitate the test gantry to pass through the hollow part and be assembled with the gantry mounting seat, and to facilitate the vertical part to move in the lifting channel.

[0010] Preferably, the flatbed transport assembly includes a body, two steering wheels and two brakeable directional wheels, and the steering wheels and the directional wheels are both arranged under the body.

[0011] 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 a U-shaped groove for installing different types of the horizontal parts, and the rear bottom plate is used to place the hydraulic station of the control device;

[0012] The front bottom plate and the rear bottom plate are both provided with reinforcing ribs to ensure that the vehicle body is in a stable state during the test, and the side of the rear bottom plate is provided with a hook for connecting with a trailer.

[0013] Preferably, the gantry mounting seat includes two cylindrical seats respectively arranged in the U-shaped groove and a cylindrical tube for clamping with the horizontal part, the cylindrical seats can move forward and backward along the U-shaped groove, and the cylindrical tube is horizontally arranged on the two cylindrical seats.

[0014] Preferably, the cylindrical tube 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 matching the U-shaped groove, the vertical plate is triangular in shape, the top of the vertical plate is provided with an arc groove for clamping with the end of the cylindrical tube, 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;

[0015] The pin plate is provided with a threaded hole matching the cylinder pin for locking the cylindrical cylinder, and circular holes matching the cylinder pin are provided on both sides of the cylindrical cylinder so that the cylinder pin can pass through the cylindrical cylinder and be fixed to the pin plate, and a handle is provided at the end of the cylindrical cylinder for disassembling the cylindrical cylinder.

[0016] Preferably, the vertical mounting seat comprises left and right mounting seats arranged symmetrically, a crossbeam plate arranged horizontally on the top of the left and right mounting seats, and a parking hand brake for controlling the braking of the directional wheel, the left and right mounting seats are spliced ​​by a base plate, a left side plate, a right side plate and a front cover plate, the base plate is arranged on the U-shaped groove, the left side plate and the right side plate are arranged on the left and right sides of the base plate respectively, the front cover plate is arranged between the left side plate and the right side plate, and bearings, a screw rod embedded in the bearing and a turntable for driving the screw rod to rotate are respectively arranged on both sides of the crossbeam plate;

[0017] The front side of the front sealing plate is provided with upper and lower baffles which are symmetrically distributed to form a guide rail. The pull ring seat can slide left and right in the guide rail. The pull ring seat is provided with an ear buckle plate for installing the door frame tilt adjustment device. The upper and lower baffles are provided with a first bolt hole for fixing and installing the rear plate and a second bolt hole for clamping the pull ring seat. The rear side of the front sealing plate is provided with the rear plate, and the rear plate is provided with a nut for matching the thread on the screw rod.

[0018] Preferably, the portal frame tilt adjustment device includes a left-handed bolt connected to the pull ring seat, a right-handed bolt connected to the ear hole, an inclined bolt sleeve for connecting the left-handed bolt and the right-handed bolt, and a locking nut. By rotating the inclined bolt sleeve, the left-handed bolt and the right-handed bolt can be moved closer to or farther away from each other. The locking nut is sleeved on the end of the inclined bolt sleeve to lock the inclined bolt sleeve.

[0019] Preferably, a displacement sensor is provided on the top of the gantry lifting guard frame to detect the lifting height of the test gantry.

[0020] Preferably, the control device includes a hydraulic station and a PC control center for providing the required hydraulic power for the test. The PC control center is connected to the hydraulic station to control the operation of the hydraulic station to perform relevant tests and monitor and record various test data.

[0021] Preferably, the hydraulic station is provided with a cooling system. When the temperature of the hydraulic oil of the hydraulic station exceeds a set value, the cooling system can start cooling. When the temperature of the hydraulic oil is lower than or equal to the set value, the cooling system can stop running.

[0022] The PC control center is integrated with a safety control system. When the test gantry has oil pipe burst, gantry overturning or gantry channel steel damage during the test, the safety control system can control the hydraulic station to stop running.

[0023] When using the universal forklift gantry test bench provided by the present invention, first, the test gantry can be passed through the hollow portion of the gantry lifting guard frame, and the horizontal portion of the test gantry can be fixedly mounted on the gantry mounting seat; then, the ear buckles and the vertical mounting seat of the vertical portion are connected to the gantry tilt adjustment device, and the tilt angle of the vertical portion during assembly is adjusted to ensure that the test gantry is in the required state for the test; thereafter, the counterweight used for the test gantry is placed above the fork of the test gantry, and the flatbed transport assembly is towed to the corresponding test site by a trailer, and the flatbed transport assembly is controlled to be in a braking state after arriving at the test site; finally, the control device can be used to drive the test gantry to perform corresponding experimental operations, such as lifting, lowering, lateral displacement, forward and backward tilting, and fatigue testing of the test gantry, so as to obtain various test data of the test gantry.

[0024] Moreover, the universal forklift mast test bench provided by the present invention can effectively simulate the mast installation state of an actual vehicle to improve the accuracy of the test measurement data. Moreover, it is not limited by the site and does not require the mast performance test of the entire vehicle. Only the mast assembly of the forklift is needed to complete a series of forklift mast performance tests, which is conducive to simplifying the operation and improving the work efficiency.

[0025] In addition, the universal forklift mast test bench provided by the present invention can also be used to install and test masts of different models, and can also perform certain fatigue tests on some more complex mast accessory products. The mast lifting guard of the device has a safety protection function and can effectively reduce the occurrence of test accidents.

[0026] In summary, the universal forklift mast test bench provided by the present invention can effectively improve the accuracy, applicability and safety of the forklift mast performance test bench. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0028] Figure 1 A schematic diagram of the use of the universal forklift gantry test bench and the test gantry provided by the present invention;

[0029] Figure 2 It is a schematic diagram of the structure when the test gantry does not enter the gantry lifting guardrail;

[0030] Figure 3 This is a schematic diagram of the structure when the test gantry is not placed with a counterweight;

[0031] Figure 4 It is a structural diagram of the vehicle body;

[0032] Figure 5 for Figure 4 The main view;

[0033] Figure 6 for Figure 4 A top view of

[0034] Figure 7 It is a structural schematic diagram of the gantry tilt adjustment device;

[0035] Figure 8 It is a structural schematic diagram of the gantry mounting base;

[0036] Fig. 9 for Figure 8 The main view;

[0037] Fig.10 for Figure 8 A top view of

[0038] Fig.11 for Figure 8 Side view of

[0039] Fig.12 This is the front view of the vertical mounting base;

[0040] Fig.13 It is the main view of the vertical mounting base from another perspective;

[0041] Fig.14 It is a top view of the vertical mounting base;

[0042] Fig.15 Side view of the vertical mount.

[0043] Figure 1-Figure 15 middle:

[0044] 1 is a flatbed transport 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 cylinder 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 cylinder, 33 is a cylinder pin, 34 is a handle, 4 is a vertical mounting seat, 41 is a left and right mounting seat, 41 1 is the base plate, 412 is the left side plate, 413 is the right side plate, 414 is the front cover plate, 42 is the cross beam plate, 421 is the screw rod, 422 is the turntable, 43 is the parking hand brake, 44 is the upper and lower baffles, 45 is the pull ring seat, 451 is the ear buckle plate, 46 is the rear plate, 5 is the door frame tilt adjustment device, 51 is the left-hand bolt, 52 is the right-hand bolt, 53 is the tilt bolt sleeve, 54 is the locking nut, 6 is the door frame lifting guard frame, 7 is the hydraulic station, 8 is the counterweight, and 9 is the fork. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] The core of the present invention is to provide a universal forklift gantry test bench, which can effectively improve the accuracy, applicability and safety of the forklift gantry performance test bench.

[0047] Please refer to Figures 1 to 15 .

[0048] This specific embodiment provides a universal forklift gantry test bench, including: a flatbed transport assembly 1 that can move along the ground, a gantry mounting seat 3 for fixing the horizontal part of the test gantry 2, a vertical mounting seat 4 for connecting the vertical part of the test gantry 2, a gantry tilt adjustment device 5 for adjusting the tilt angle required for assembly of the vertical part, a gantry lifting guard frame 6 for preventing the test gantry 2 from tipping over, and a control device for controlling the test gantry 2 to perform corresponding experimental operations; the gantry mounting seat 3, the vertical mounting seat 4, and the control device are all arranged on the flatbed transport assembly 1, one end of the gantry tilt adjustment device 5 is connected to the vertical mounting seat 4, and the other end is connected to the ear hole of the vertical part, and the gantry lifting guard frame 6 is provided with a hollow portion and a lifting channel, so that the test gantry 2 can pass through the hollow portion to be assembled with the gantry mounting seat 3 and the vertical part can move along the lifting channel.

[0049] In actual use, the shape, structure, position, etc. of the flatbed transport assembly 1, the gantry mounting seat 3, the vertical mounting seat 4, the gantry tilt adjustment device 5, the gantry lifting guard frame 6 and the control device can be determined according to actual conditions and actual needs.

[0050] When using the universal forklift gantry test bench provided by the present invention, first, the test gantry 2 can be passed through the hollow portion of the gantry lifting guard frame 6, and the horizontal portion of the test gantry 2 can be fixedly mounted on the gantry mounting seat 3; then, the ear buckles and the vertical mounting seat 4 of the vertical portion are connected to the gantry tilt adjustment device 5, and the tilt angle of the vertical portion during assembly is adjusted to ensure that the test gantry 2 is in the required state for the test; thereafter, the counterweight 8 used by the test gantry 2 is placed above the fork 9 of the test gantry 2, and the flatbed transport assembly 1 is towed to the corresponding test site by a trailer, and the flatbed transport assembly 1 is controlled to be in a braking state after arriving at the test site; finally, the control device can be used to drive the test gantry 2 to perform corresponding experimental operations, such as lifting, lowering, lateral displacement, forward and backward tilting, and fatigue testing of the test gantry 2, so as to obtain various test data of the test gantry 2.

[0051] Moreover, the universal forklift mast test bench provided by the present invention can effectively simulate the mast installation state of an actual vehicle to improve the accuracy of the test measurement data. Moreover, it is not limited by the site and does not require the mast performance test of the entire vehicle. Only the mast assembly of the forklift is needed to complete a series of forklift mast performance tests, which is conducive to simplifying the operation and improving the work efficiency.

[0052] In addition, the universal forklift mast test bench provided by the present invention can also be used to install and test masts of different models, and can also perform certain fatigue tests on some more complex mast accessory products. The mast lifting guard 6 of the device has a safety protection function and can effectively reduce the occurrence of test accidents.

[0053] In summary, the universal forklift mast test bench provided by the present invention can effectively improve the accuracy, applicability and safety of the forklift mast performance test bench.

[0054] On the basis of the above embodiments, preferably, the flatbed transport assembly 1 includes a body 11 , two steering wheels 12 and two brakeable directional wheels 13 , and the steering wheels 12 and the directional wheels 13 are both arranged below the body 11 .

[0055] It should be noted that the brakeable directional wheel 13 means that the directional wheel 13 is provided with a parking hand brake 43. By tightening the hand cable through the parking hand brake 43, the brake disc can be locked, thereby braking the directional wheel 13. The steering wheel 12 is provided to meet the steering requirements of the entire device so that the vehicle body 11 can be smoothly dragged to other sites. When the vehicle body 11 moves to the preset position, a triangular cone can be set at the bottom of the directional wheel 13 and the steering wheel 12 to prevent the vehicle from sliding. Such a setting of the flatbed transport assembly 1 can effectively simulate the movement of an actual forklift to make the test data more accurate, and also allows the test gantry 2 to replace the test site without being restricted by the site.

[0056] It should also be noted that two steering wheels 12 of the same structure can be installed on the left and right sides below the rear end of the vehicle body 11, respectively. The steering wheel 12 is mainly composed of an auxiliary wheel bracket, an auxiliary wheel, a large bearing and a small bearing. A small bearing can be set in the middle of the auxiliary wheel, a slot is set in the middle of the small bearing, and then it is fixed to the auxiliary wheel bracket through the slot. The auxiliary wheel bracket is composed of a bracket base and a bracket fixing plate. A large bearing is installed in the middle of the auxiliary wheel bracket, and a slot is also set in the middle of the large bearing. The bracket base is fixed to the rear end of the vehicle body 11 by bolts. In addition, two directional wheels 13 of the same structure can be installed on both sides of the front end of the vehicle body 11, respectively. Moreover, the directional wheel 13 is also provided with a brake assembly device, and the brake assembly can tighten the hand cable through the parking hand brake 43 to brake the directional wheel 13.

[0057] Preferably, the vehicle body 11 includes 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, the front bottom plate 111 is provided with a U-shaped groove for installing horizontal parts of different models, and the rear bottom plate 112 is used to place 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 the test, and the side of the rear bottom plate 112 is provided with a hook 115 for connecting to a trailer, so that the vehicle body 11 can be smoothly towed to other sites by the trailer device through the hook 115.

[0058] It should be noted that the front bottom plate 111 can be set as a thicker steel plate, and four U-shaped grooves can be set above the front bottom plate 111 to facilitate the installation of different types of test gantry 2. Moreover, the test gantry 2 can be moved forward and backward along the U-shaped groove to ensure that all types of test gantry 2 are installed in place.

[0059] The rear bottom plate 112 can be set as a rectangular plate to stably place the hydraulic station 7 of the control device. Moreover, the hydraulic station 7 is set at the rear of the vehicle body 11 to ensure that the entire test bench is more stable when the gantry lifting test is performed by taking advantage of the overall weight of the hydraulic station 7. The transition plate 113 is set between the front bottom plate 111 and the rear bottom plate 112, and the front bottom plate 111, the transition plate 113 and the rear bottom plate 112 can be connected in sequence by welding.

[0060] In addition, it should be noted that triangular reinforcing ribs 114 can be provided on both the front and back sides of the front bottom plate 111 and the rear bottom plate 112 to ensure that the vehicle body 11 is in a stable state during the test and effectively ensure the test strength during the test. A hook 115 can be provided on the rear side of the rear bottom plate 112 so that the vehicle body 11 can be towed to other test sites by some simple tool carts.

[0061] Preferably, the gantry mounting seat 3 includes two cylindrical seats 31 respectively arranged in the U-shaped groove and a cylindrical tube 32 for clamping with the horizontal part. The cylindrical seats 31 can move forward and backward along the U-shaped groove, and the cylindrical tube 32 is horizontally arranged on the two cylindrical seats 31.

[0062] It should be noted that the mast mounting seat 3 can be directly fixed to the vehicle body 11 by bolts, and the mast mounting seat 3 is mainly used to fix the test mast 2 and bear the weight of the test mast 2 during the test. Moreover, when the cylindrical seat 31 moves forward and backward along the U-shaped groove, the test mast 2 can be moved forward and backward to ensure that different models of test masts 2 can be installed in place.

[0063] 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 the U-shaped groove. The vertical plate 312 is triangular in shape. The top of the vertical plate 312 is provided with an arc groove for clamping with the end of the cylindrical barrel 32. The vertical plate 312 is arranged on the seat frame 311. A reinforcing plate 314 is provided on one side of the vertical plate 312. A pin plate 313 is horizontally provided between the reinforcing plate 314 and the vertical plate 312. The pin plate 313 is provided with a threaded hole matching the barrel pin 33 for locking the cylindrical barrel 32. Circular holes matching the barrel pin 33 are provided on both sides of the cylindrical barrel 32 so that the barrel pin 33 can pass through the cylindrical barrel 32 and be fixed to the pin plate 313. A handle 34 for disassembling the cylindrical barrel 32 is provided at the end of the cylindrical barrel 32.

[0064] It should be noted that the seat frame 311, the vertical plate 312 and the two reinforcing plates 314 can be welded and spliced. The cylindrical barrel 32 is processed from a cylindrical rod, and the cylinder diameter in the middle of the cylindrical barrel 32 matches the arc groove size of the test gantry 2. In addition, cylindrical parts matching the vertical plate 312 can be set on both sides of the cylindrical barrel 32, and circular holes matching the barrel pin 33 can be set on the outer side of the cylindrical part, so that the barrel pin 33 can pass through the cylindrical part and be fixed with the pin plate 313. In addition, a handle 34 can be set on the outermost side of the cylindrical part, so that the cylindrical barrel 32 can be lifted and replaced by the handle 34 to adapt to different cylindrical barrels 32, thereby ensuring that the cylindrical barrel 32 can match and install different models of test gantry 2.

[0065] On the basis of the above embodiment, preferably, the vertical mounting seat 4 includes left and right mounting seats 41 that are symmetrically arranged, a crossbeam plate 42 that is horizontally arranged on the top of the left and right mounting seats 41, and a parking brake 43 for controlling the braking of the directional wheel 13. The left and right mounting seats 41 are spliced ​​together by 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 the crossbeam plate 42 is The two sides are provided with bearings, screw rods 421 embedded in the bearings, and a turntable 422 for driving the screw rods 421 to rotate; the front side of the front sealing plate 414 is provided with upper and lower baffles 44 symmetrically distributed to form a guide rail, the pull ring seat 45 can slide left and right in the guide rail, the pull ring seat 45 is provided with an ear buckle plate 451 for installing the door frame tilt adjustment device 5, the upper and lower baffles 44 are provided with a first bolt hole for fixing and installing the rear plate 46 and a second bolt hole for clamping the pull ring seat 45, the rear side of the front sealing plate 414 is provided with a rear plate 46, and the rear plate 46 is provided with a nut for matching the thread on the screw rod 421. Therefore, the upper and lower baffles 44 and the rear plate 46 have a linkage effect, and when the turntable 422 rotates, the pull ring seat 45, the upper and lower baffles 44 and the rear plate 46 can move up and down with the rotation of the screw rod 421.

[0066] It should be noted that when the second bolt holes of the upper and lower baffles 44 have not been 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. When the first bolt holes and the second bolt holes of the upper and lower baffles 44 are locked with the bolts, the pull ring seat 45 can be adjusted up and down with the rotation of the screw rod 421 to ensure that the ear buckle plate 451 of the pull ring seat 45 is accurately assembled with the test door frame 2 of different heights. In addition, the thickness of the pull ring seat 45 can be set thicker than the depth of the guide rail to ensure that the pull ring seat 45 will not loosen when the bolts in the second bolt holes are tightened. In addition, two ear buckle plates 451 can be provided on the pull ring seat 45, one of which is provided with a through hole, and the other ear buckle plate 451 is provided with a threaded hole, and a bolt shaft is provided between the two, and the two ear buckle plates 451 are mainly used to install the door frame tilt adjustment device 5.

[0067] It should also be noted that the left and right mounting seats 41 can be directly mounted on the vehicle body 11 by bolts, and a parking hand brake 43 can be installed on the sides 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 to lock the directional wheel 13 when parking, ensuring that the entire device is in a stable state during the gantry test.

[0068] A through hole matching the U-shaped groove of the front bottom plate 111 of the vehicle body 11 can be provided on the base plate 411, and the left side plate 412 and the right side plate 413 are respectively welded to the left and right sides of the base plate 411, and the front cover plate 414 is welded to the left side plate 412 and the right side plate 413. In addition, the cross beam plate 42 can be fixed to the left and right mounting seats 41 by bolts, and the turntable 422 and the screw rod 421 are assembled into an integrated structure, and the screw rod 421 can be driven to rotate freely by manually rotating the turntable 422.

[0069] Preferably, the door frame tilt adjustment device 5 includes a left-handed bolt 51 for connecting to the pull ring seat 45, a right-handed bolt 52 for connecting to the ear hole, a tilted bolt sleeve 53 for connecting the left-handed bolt 51 and the right-handed bolt 52, and a locking nut 54. By rotating the tilted bolt sleeve 53, the left-handed bolt 51 and the right-handed bolt 52 can be moved closer to or away from each other. The locking nut 54 is sleeved on the end of the tilted bolt sleeve 53 to lock the tilted bolt sleeve 53.

[0070] Therefore, by rotating the tilting 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 adjust the angle. When the test gantry 2 is adjusted to a suitable position, the tilting bolt sleeve 53 can be locked by the locking nut 54 to prevent the test gantry 2 from continuing to rotate.

[0071] Preferably, a displacement sensor is provided on the top of the gantry lifting guard frame 6 to detect the lifting height of the test gantry 2.

[0072] It should be noted that the gantry lifting guard frame 6 can be set as a steel pipe installed on the front side of the test gantry 2. One side of the gantry lifting guard frame 6 is hollowed out, such as a U-shaped hollow, to facilitate the lifting test of the test gantry 2 from the hollow part and to avoid tipping over accidents of the test gantry 2 during the test.

[0073] It should also be noted that the displacement sensor provided on the top of the gantry lifting guard frame 6 can be connected to the control device so that the lifting height data of the test gantry 2 detected by the displacement sensor can be transmitted to the control device, so that the control device can control the position and status of the test gantry 2 in real time and perform corresponding control operations to ensure the safety of the test gantry 2 during the test.

[0074] On the basis of the above embodiment, preferably, the control device includes a hydraulic station 7 and a PC control center for providing the required hydraulic power for the test. The PC control center is connected to the hydraulic station 7 to control the operation of the hydraulic station 7 to perform relevant tests and monitor and record various test data.

[0075] It should be noted that the hydraulic station 7 can be installed and fixed on the rear bottom plate 112 of the vehicle body 11. The setting of the hydraulic station 7 is mainly to provide the hydraulic power required for the test when the gantry is tested. The hydraulic power includes the required pressure and flow, etc., to ensure that the test gantry 2 can accurately complete various tests. The PC control center and the hydraulic station 7 can be set as an integrated structure 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 and oil supply speed of the hydraulic station 7, and can monitor the inclination angle and lifting height of the test gantry 2 in real time to accurately read every 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 and test number of the test gantry 2 to obtain various test data of the test gantry 2.

[0076] Preferably, a cooling system is provided on the hydraulic station 7. When the temperature of the hydraulic oil of the hydraulic station 7 exceeds a set value, the cooling system can start cooling. 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. When the test gantry 2 has an oil pipe burst, the gantry overturned, or the gantry channel steel was damaged during the test, the safety control system can control the hydraulic station 7 to stop running.

[0077] Therefore, when the temperature of the hydraulic oil exceeds the set value, the cooling system can be started, for example, the cooling fan can be started to cool the hydraulic oil, and when the temperature of the hydraulic oil is lower than or equal to the set value, the cooling fan will stop rotating. In addition, when the gantry overturns due to oil pipe bursting or damage to the gantry tilting device during the test, the safety control system can control the hydraulic station 7 to stop running. Moreover, when the gantry channel steel is damaged, the hydraulic station 7 will also stop working immediately to prevent the occurrence of secondary accidents.

[0078] In order to further illustrate the use of the universal forklift mast test bench provided by the present invention, an example is given below.

[0079] When using the universal forklift gantry test bench to perform a performance test on the test gantry 2, the following steps can be followed:

[0080] 1. Install and fix the lower end of the test gantry 2 on the gantry mounting seat 3, and install and fix the ear holes on the test gantry 2 on the gantry tilt adjustment device 5;

[0081] 2. Place the counterweight 8 used by the test mast 2 on the cargo fork 9 of the test mast 2, and then use a trailer to tow the entire universal forklift mast test bench to the corresponding test site, and adjust the parking brake 43 to put the directional wheel 13 in a braking state;

[0082] 3. Install parking triangle cones on the front and rear sides of the directional wheel 13 and the steering wheel 12 to ensure that the universal forklift gantry test bench is in a stable state during the test;

[0083] 4. After the angle adjuster of the PC control center is reset to zero, it is placed on the rear side of the test gantry 2. The angle of the test gantry 2 is checked through the PC control center, and then the installation angle of the test gantry 2 is adjusted through the gantry tilt adjustment device 5 to ensure that the test gantry 2 is in the required state for the test;

[0084] 5. Reset the displacement sensor on the top of the mast lifting guard frame 6 to zero, and then connect the high-pressure oil pipe of the hydraulic station 7 to the oil inlet and outlet of the lifting cylinder of the test mast 2. If a side shift test is required, just connect the high-pressure oil pipe of the hydraulic station 7 to the oil inlet and outlet of the side shift cylinder of the test mast 2 to carry out the mast side shift test; if a front and rear tilt test is required, just replace the tilt adjustment device with a tilt cylinder, and connect the high-pressure oil pipe of the hydraulic station 7 to the oil inlet and outlet of the tilt cylinder of the test mast 2 to carry out the mast tilt test;

[0085] 6. Complete a series of gantry performance tests through the PC control center, such as gantry lifting, lowering, lateral movement, forward and backward tilting, and fatigue tests, and monitor and record various test data.

[0086] The universal forklift gantry test bench provided by the present invention can ensure the safety, integrity and accuracy of the forklift gantry performance test, and there are safety protection measures when conducting the rated lifting test, maximum lifting height test and fatigue test of the gantry. The present invention also takes into account the buffering and vibration reduction effect of the tire, so that the test data is closer to the actual situation and more in line with the corresponding test standards. This device can not only improve the accuracy of the test measurement data, but also solve the lifting test of test gantries 2 of different models and series. At the same time, it can also solve some conventional gantry tests, and it is not limited by the site. It does not require a whole vehicle to carry out the gantry performance test. Only the forklift gantry assembly is needed to complete a series of forklift gantry performance tests, which can simplify the operation and greatly improve the work efficiency.

[0087] It should be noted that the first bolt hole and the second bolt hole mentioned in the present application document are only used to distinguish the difference in position and there is no order of precedence.

[0088] In addition, it should be noted that the directions or positional relationships indicated by "up and down", "left and right", etc. in this application are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of simplifying the description and facilitating understanding, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0089] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. Any combination of all embodiments provided by the present invention is within the protection scope of this invention and will not be described in detail here.

[0090] The universal forklift gantry test bench provided by the present invention is introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A universal forklift mast test bench, characterized in that: include: A flat plate transport assembly (1) movable along the ground, a gantry mounting seat (3) for fixing the horizontal portion of a test gantry (2), a vertical mounting seat (4) for connecting the vertical portion of the test gantry (2), a gantry tilt adjustment device (5) for adjusting the tilt angle required for assembly of the vertical portion, a gantry lifting guard frame (6) for preventing the test gantry (2) from tipping over, and a control device for controlling the test gantry (2) to perform corresponding experimental operations; The gantry mounting seat (3), the vertical mounting seat (4), and the control device are all arranged on the flatbed transport assembly (1); one end of the gantry tilt adjustment device (5) is connected to the vertical mounting seat (4), and the other end is connected to the ear hole of the vertical portion; the gantry lifting guard frame (6) is provided with a hollow portion and a lifting channel, so that the test gantry (2) can pass through the hollow portion to be assembled with the gantry mounting seat (3), and the vertical portion can move in the lifting channel; The flatbed transport assembly (1) comprises a body (11), two steering wheels (12) and two brakeable directional wheels (13), wherein the steering wheels (12) and the directional wheels (13) are both arranged below the body (11); 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), the front bottom plate (111) being provided with a U-shaped groove for installing different types of horizontal parts, and the rear bottom plate (112) being used for placing a 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 the test, and the side of the rear bottom plate (112) is provided with a hook (115) for connecting to a trailer; The gantry mounting seat (3) comprises two cylindrical barrel seats (31) respectively arranged in the U-shaped groove and a cylindrical barrel (32) for clamping with the horizontal part, the cylindrical barrel seats (31) can move forward and backward along the U-shaped groove, and the cylindrical barrel (32) is horizontally arranged on the two cylindrical barrel seats (31); The vertical mounting seat (4) comprises symmetrically arranged left and right mounting seats (41), a cross beam plate (42) horizontally arranged on the top of the left and right mounting seats (41), and a parking hand brake (43) for controlling the braking of the directional wheel (13); the left and right mounting seats (41) are spliced ​​by a base plate (411), a left side plate (412), a right side plate (413) and a front cover 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 cover plate (414) is arranged between the left side plate (412) and the right side plate (413); bearings, a screw rod (421) embedded in the bearing, and a turntable (422) for driving the screw rod (421) to rotate are respectively arranged on both sides of the cross beam plate (42); The front side of the front sealing plate (414) is provided with upper and lower baffles (44) which are symmetrically distributed to form a guide rail, and the pull ring seat (45) can slide left and right in the guide rail. The pull ring seat (45) is provided with an ear buckle plate (451) for installing the door frame tilt adjustment device (5), and the upper and lower baffles (44) are provided with a first bolt hole for fixing and installing a rear plate (46) and a second bolt hole for clamping the pull ring seat (45). The rear side of the front sealing plate (414) is provided with the rear plate (46), and the rear plate (46) is provided with a nut for matching with the thread on the screw rod (421).

2. The universal forklift mast test bench according to claim 1 is characterized in that: The cylindrical tube seat (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 matching the U-shaped groove; the vertical plate (312) is triangular in shape; the top of the vertical plate (312) is provided with an arc 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 provided on one side of the vertical plate (312); and the pin plate (313) is horizontally provided between the reinforcing plate (314) and the vertical plate (312); The pin plate (313) is provided with a threaded hole matching the cylinder pin (33) for locking the cylindrical barrel (32); circular holes matching the cylinder pin (33) are provided on both sides of the cylindrical barrel (32) so that the cylinder pin (33) can pass through the cylindrical barrel (32) and be fixed to the pin plate (313); and a handle (34) for disassembling the cylindrical barrel (32) is provided at the end of the cylindrical barrel (32).

3. The universal forklift mast test bench according to claim 1, characterized in that: The door frame tilt adjustment device (5) comprises a left-handed bolt (51) for connecting to the pull ring seat (45), a right-handed bolt (52) for connecting to the ear hole, a tilted bolt sleeve (53) for connecting the left-handed bolt (51) and the right-handed bolt (52), and a locking nut (54). By rotating the tilted bolt sleeve (53), the left-handed bolt (51) and the right-handed bolt (52) can be moved closer to or farther away from each other. The locking nut (54) is sleeved on the end of the tilted bolt sleeve (53) to lock the tilted bolt sleeve (53).

4. The universal forklift mast test bench according to any one of claims 1 to 3, characterized in that: A displacement sensor is provided on the top of the gantry lifting guard frame (6) to detect the lifting height of the test gantry (2).

5. The universal forklift mast test bench according to any one of claims 1 to 3, characterized in that: The control device comprises a hydraulic station (7) for providing the required hydraulic power for the test and a PC control center. The PC control center is connected to the hydraulic station (7) to control the operation of the hydraulic station (7) to perform relevant tests and monitor and record various test data.

6. The universal forklift mast test bench according to claim 5, characterized in that: 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 start cooling down. 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. When the test gantry (2) has oil pipe bursting, the gantry overturning or the gantry channel steel is damaged during the test, the safety control system can control the hydraulic station (7) to stop running.

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