A forklift turning performance testing device

Abstract

The present invention relates to the technical field of forklift performance testing, and discloses a forklift turning performance testing device, comprising a fixed column, a bearing being rotatably provided on the fixed column, a connecting rod 1 being provided on the bearing, a sliding block being slidably provided on the connecting rod 1, a connecting rod 2 being provided at one end of the sliding block, an L-shaped rod being movably inserted on the connecting rod 2, an L-shaped connecting rod 1 being movably inserted at one end of the L-shaped rod, an L-shaped connecting rod 2 being movably inserted at one end of the L-shaped rod, a fixing mechanism for fixing a wheel hub being provided on the L-shaped connecting rod 2, an auxiliary positioning mechanism for adjusting the height of the L-shaped rod being provided at a position corresponding to the fixing mechanism on the L-shaped rod, a fixing seat being provided at one end of the connecting rod 1, and a driving mechanism for driving the connecting rod 2 to move up and down being provided on the fixing seat. Compared with the prior art, the present invention has the advantages of being able to measure the minimum turning radius of a forklift, accurate measuring results, simple testing process, and time saving.

Description

Technical Field

[0001] The invention relates to the technical field of forklift performance testing, in particular to a forklift turning performance testing device. Background Art

[0002] Forklifts are industrial handling vehicles, which refer to various wheeled handling vehicles that load, unload, stack and transport palletized goods over short distances. They are often used to transport large objects in warehouses and are usually powered by fuel engines or batteries.

[0003] When using a forklift, the forklift's turning performance is generally tested. The test can be used to evaluate the forklift's overall performance and determine its minimum turning radius. The smaller the turning radius, the higher the forklift's flexibility. When testing, first drive the forklift to an open area, turn the steering wheel fully when it is unloaded and at low speed, so that the steering wheel is at the maximum turning angle, and then start the forklift. The forklift will rotate in a circle on the ground. After one circle, a circle is obtained based on the tire mark, and then the radius of the circle is tested. At this time, the minimum turning radius is measured. Since the radius measured by this method has a large error, multiple measurements are required to obtain the average value.

[0004] The existing method of testing the minimum turning radius of forklifts is mainly through manual measurement, which has large errors and requires multiple measurements to obtain the average value, which is relatively cumbersome. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the above difficulties and provide a forklift turning performance testing device.

[0006] In order to solve the above technical problems, the technical solution provided by the present invention is as follows: a forklift turning performance testing device comprises a fixed column, a bearing is rotatably provided on the fixed column, a connecting rod 1 is provided on the bearing, a slider is slidably provided on the connecting rod 1, a connecting rod 2 is provided at one end of the slider, an L-shaped rod is movably inserted on the connecting rod 2, an L-shaped connecting rod 1 is movably inserted at one end of the L-shaped rod, an L-shaped connecting rod 2 is movably inserted at one end of the L-shaped connecting rod, a fixing mechanism for fixing the wheel hub is provided on the L-shaped connecting rod, an auxiliary positioning mechanism for adjusting the height of the L-shaped rod is provided at a position corresponding to the fixing mechanism on the L-shaped rod, a fixed seat is provided at one end of the connecting rod, a driving mechanism for driving the connecting rod 2 to move up and down is provided on the fixed seat, a moving mechanism for driving the L-shaped connecting rod 2 to move horizontally is provided in the connecting rod 2, an auxiliary positioning mechanism is provided on the L-shaped rod, and when the auxiliary positioning mechanism is horizontal, the driving mechanism drives the connecting rod 2 to move up and down, and the driving mechanism drives the L-shaped connecting rod 2 to move horizontally. A power conversion mechanism is provided on the L-shaped rod, and an adjustment mechanism for determining the minimum outer turning radius is provided between the connecting rod 2 and the L-shaped rod.

[0007] As an improvement, the adjustment mechanism includes a sliding hole 1 on a connecting rod 2, two adjustment blocks are slidably arranged in the sliding hole 1, a lever is provided at one end of the L-shaped rod and is located between the two adjustment blocks, and the movement of the lever drives the two adjustment blocks to move respectively, and the adjustment block is provided with a limit mechanism for limiting the unidirectional movement of the adjustment block, and the limit mechanism includes a limit block 1 on both sides of the adjustment block, a limit groove 1 is provided on both sides of the sliding hole 1 on the connecting rod 2 and cooperates with the limit block 1, a pawl is hinged on the limit block 1 and a torsion spring is provided between the pawl and the limit block 1, and a ratchet bar cooperating with the pawl is provided on one side wall of the limit groove.

[0008] As an improvement, the fixing mechanism includes a connecting column one arranged on an L-shaped connecting rod two, a movable ball one is provided at one end of the connecting column one, a ball sleeve one is rotatably provided on the movable ball one, a limit block two is provided in the ball sleeve one, the movable ball one is provided with a limit groove two which enables the ball sleeve one to rotate only horizontally and cooperates with the limit block two, a connecting column two is provided at one end of the ball sleeve one, a fixed disk is provided at one end of the connecting column two, a sleeve is rotatably provided on one side of the fixed disk, a plurality of fixed shafts are provided in the sleeve, an arc block for limiting the wheel hub is movably inserted on the fixed shaft, and a spring two is provided between the arc block and the sleeve.

[0009] As an improvement, the auxiliary positioning mechanism includes a square sleeve two hingedly arranged on the L-shaped rod and a torsion spring two is arranged between the square sleeve two and the L-shaped rod, an extension column is movably inserted on the square sleeve two and a reset spring two is arranged between the square sleeve two, one end of the extension column is provided with a movable ball, a ball sleeve two is rotatably arranged on the movable ball two, a limit block three is arranged in the ball sleeve two, the movable ball two is provided with a limit groove three which enables the ball sleeve two to rotate only in the horizontal and vertical directions and cooperates with the limit block three, a threaded column is provided on one side of the ball sleeve two, a fixed frame is rotatably arranged at one end of the threaded column, a plurality of positioning blocks are slidably arranged on the fixed frame, a splint for positioning the wheel hub is provided at one end of the positioning block, and a sliding mechanism for driving the positioning block to slide is provided on the threaded column.

[0010] As an improvement, the driving mechanism includes a cavity in a fixed seat, a rotating shaft 1 is rotatably provided in the cavity and can slide up and down, a spring 4 is provided between the rotating shaft 1 and the cavity, a stud that drives the slider to move up and down is rotatably provided on the connecting rod 1, and the slider is provided with a threaded groove that cooperates with the stud, a gear 1 is provided on the rotating shaft 1, and a gear 2 that meshes with the gear 1 is provided at one end of the stud.

[0011] As an improvement, the moving mechanism includes a connecting rope arranged on L-shaped connecting rod 2, and guide columns 1 and 2 for guiding the connecting rope are respectively rotatably provided in the L-shaped rod and L-shaped connecting rod 1, and a winding roller for winding the connecting rope is rotatably provided in the connecting rod 2, and a rotating shaft 2 is rotatably provided on the fixed seat, and a gear 3 is provided on the rotating shaft 2. A driving shaft connected to the winding roller is provided at one end of the rotating shaft 2, and the rotation of the driving shaft drives the winding roller to rotate, and a socket 2 cooperating with the driving shaft is provided on the connecting rod 2. The power conversion mechanism moves to drive the rotating shaft to move down so that gear 1 is engaged with gear 3.

[0012] As an improvement, the power conversion mechanism includes a square sleeve one arranged on the bottom surface of the second connecting rod, an extension rod is movably inserted in the square sleeve one, an insertion block is movably inserted on the second square sleeve and a return spring one is provided between the second square sleeve, a slot corresponding to the insertion block is provided on the L-shaped rod, a push rod extending into the slot is provided on the extension rod, a sliding groove is provided on the fixed seat, a sliding rod is provided in the sliding groove, an arc-shaped groove two for driving the rotating shaft to move downward is provided on the sliding rod, a socket one cooperating with the sliding rod is provided on the second connecting rod, and one end of the square sleeve one is in contact with the sliding rod.

[0013] The advantages of the present invention compared with the prior art are:

[0014] 1. Fix the wheel hub center of the forklift through the auxiliary positioning mechanism, and then adjust the height of the second connecting rod, the L-shaped rod, the L-shaped connecting rod 1, and the L-shaped connecting rod 2 through the driving mechanism so that they are in the same plane as the wheel hub center;

[0015] 2. When the second connecting rod, the L-shaped rod, the first L-shaped connecting rod, the second L-shaped connecting rod and the center of the wheel hub are in the same plane, the power conversion mechanism causes the driving mechanism to drive the second connecting rod to move up and down to drive the moving mechanism, and the moving mechanism drives the second L-shaped connecting rod to move toward the wheel hub, so that the fixing mechanism fixes the wheel hub on the other side;

[0016] 3. When the forklift rotates, since the fixed column is not located at the center of the circle, the cylinder will produce a maximum and minimum value when passing through the center of the circle during the rotation of the forklift. The maximum and minimum values ​​are recorded by the adjustment mechanism, and the minimum turning radius is obtained by calculation. The measured value is more accurate, and the overall steps are relatively simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The present invention is a stereoscopic diagram of a forklift turning performance testing device.

[0018] Figure 2 It is a partial mechanism schematic diagram of a forklift turning performance testing device of the present invention.

[0019] Figure 3The invention discloses a schematic diagram of an adjusting mechanism of a forklift turning performance testing device.

[0020] Figure 4 The present invention is a stereoscopic diagram of an adjusting block of a forklift turning performance testing device.

[0021] Figure 5 It is an exploded diagram of an adjusting block of a forklift turning performance testing device of the present invention.

[0022] Figure 6 The invention discloses a schematic diagram of a fixing mechanism of a forklift turning performance testing device.

[0023] Figure 7 It is an exploded view of a fixing mechanism of a forklift turning performance testing device of the present invention.

[0024] Figure 8 It is a schematic diagram of an auxiliary positioning mechanism of a forklift turning performance testing device of the present invention.

[0025] Fig. 9 It is an exploded view of an auxiliary positioning mechanism of a forklift turning performance testing device of the present invention.

[0026] Fig.10 The present invention is a stereoscopic diagram of a movable ball of a forklift turning performance testing device.

[0027] Fig.11 The present invention is a schematic diagram of a driving mechanism of a forklift turning performance testing device.

[0028] Fig.12 The present invention is a schematic diagram of a moving mechanism of a forklift turning performance testing device.

[0029] Fig.13 This is a cross-section of a forklift turning performance testing device of the present invention Figure 1 .

[0030] Fig.14 The invention is a forklift turning performance testing device Fig.13 Enlarged view of point A in the middle.

[0031] Fig.15 This is a cross-section of a forklift turning performance testing device of the present invention Figure 2 .

[0032] Fig.16 The invention discloses a schematic diagram of a forklift turning performance testing device for calculating a minimum turning radius.

[0033] As shown in the figure: 1. Fixed column; 11. Bearing; 12. Connecting rod 1; 13. Sliding block; 14. Fixed seat; 2. Connecting rod 2; 21. Adjusting mechanism; 22. Sliding hole 1; 23. Adjusting block; 24. Push rod; 25. Limiting mechanism; 26. Limiting block 1; 27. Limiting groove 1; 28. Ratchet; 29. ​​Torsion spring 1; 210. Ratchet bar; 211. Sliding hole 2; 212. Push block; 213. Push plate; 214. Arc groove 1 ; 3. L-shaped rod; 31. Power conversion mechanism; 32. Square sleeve 1; 33. Extension rod; 34. Insert block; 35. Slot; 36. Push rod; 37. Slide groove; 38. Slide rod; 39. Arc groove 2; 310. Socket 1; 311. Return spring 1; 312. Insert rod; 313. Support rod; 314. Spring 1; 315. Sliding ball; 316. Push block; 317. Push groove; 4. L-shaped connecting rod 1; 5. L-shaped connecting rod 2; 6. Fixing mechanism; 61. Connecting column 1; 62. Active ball 1; 63. Ball sleeve 1; 64. Limit block 2; 65. Limit groove 2; 66. Connecting column 2; 67. Fixed plate; 68. Sleeve; 69. Fixed shaft; 610. Arc block; 611. Spring 2; 612. Positioning column; 613. Spring 3; 614. Ring; 7. Auxiliary positioning mechanism; 71. Square sleeve 2; 72. Extension column; 73. Reset spring 2; 74. movable ball two; 75. ball sleeve two; 76. limit block three; 77. limit slot three; 78. threaded column; 79. fixed frame; 710. positioning block; 711. clamping plate; 712. sliding mechanism; 713. connecting sleeve; 714. power rod; 715. threaded sleeve; 716. torsion spring two; 8. driving mechanism; 81. spring four; 82. rotating shaft one; 83. stud; 84. gear one; 85. gear two; 9. moving mechanism; 91. connecting rope; 92. guide column one; 93. winding roller; 94. rotating shaft two; 95. gear three; 96. driving shaft; 97. socket two; 98. guide column two. DETAILED DESCRIPTION

[0034] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0035] Combined with Figure 1 , Attachment Figure 2 , Attachment Figure 3 , Attachment Fig.13 , Attachment Fig.16As shown, a forklift turning performance testing device comprises a fixed column 1, a bearing 11 is rotatably provided on the fixed column 1, a connecting rod 12 is provided on the bearing 11, a slider 13 is slidably provided on the connecting rod 12, a connecting rod 2 is provided at one end of the slider 13, an L-shaped rod 3 is movably inserted on the connecting rod 2, the L-shaped rod 3 and the connecting rod 2 2 are fixed by bolts, an L-shaped connecting rod 1 4 is movably inserted at one end of the L-shaped rod 3, the L-shaped connecting rod 1 4 is fixed to the L-shaped rod 3 by bolts, an L-shaped connecting rod 2 5 is movably inserted at one end of the L-shaped connecting rod 1 4, the L-shaped connecting rod 2 5 is fixed to the L-shaped connecting rod 1 4 by bolts, the connecting rod 2 2, the L-shaped rod 3, the L-shaped connecting rod 1 4 and the L-shaped connecting rod 3 are all provided with scales, a fixing mechanism 6 for fixing the wheel hub is provided on the L-shaped connecting rod 2 5, and a fixing mechanism 6 for fixing the wheel hub is provided on the L-shaped rod 3 and the L-shaped connecting rod 3 is fixed to the L-shaped connecting rod 3 by bolts, and a fixing mechanism 6 for fixing the wheel hub is provided on the L-shaped connecting rod 3 and the L-shaped connecting rod 3. An auxiliary positioning mechanism 7 for adjusting the height of the L-shaped rod 3 is provided at the corresponding position of the fixing mechanism 6, a fixing seat 14 is provided at one end of the connecting rod 12, a driving mechanism 8 for driving the connecting rod 2 2 to move up and down is provided on the fixing seat 14, a moving mechanism 9 for driving the L-shaped connecting rod 2 5 to move horizontally is provided in the connecting rod 2 2, the auxiliary positioning mechanism 7 is provided on the L-shaped rod 3, which drives the driving mechanism 8 to drive the connecting rod 2 2 to move up and down when it is horizontal, and a power conversion mechanism 31 for driving the L-shaped connecting rod 2 5 to move horizontally is provided, an adjustment mechanism 21 for determining the minimum outer turning radius is provided between the connecting rod 2 2 and the L-shaped rod 3, an insertion rod 312 is provided on the L-shaped rod 3, a support rod 313 is movably inserted into the bottom surface of the insertion rod 312, and a spring 314 is provided between the support rod 313 and the insertion rod 312, and a sliding ball 315 is rotatably provided on the bottom surface of the support rod 313.

[0036] Working principle of the present invention: In the initial state, spring 1 314 is in tensioned state. When the forklift is driven to the specified position, it is difficult to manually adjust the center of connecting rod 2 2 and the center of wheel hub to be in the same plane and there is a certain error. By fixing the auxiliary positioning mechanism 7 to the center of wheel hub on one side of the forklift, the auxiliary positioning mechanism 7 is tilted at this time, and then the driving mechanism 8 is started. The driving mechanism 8 drives the slider 13 connected to the connecting rod 2 2 to move in the vertical direction. At the same time, the support rod 313 slides in the insertion rod 312, and the spring 1 314 is compressed. When the auxiliary positioning mechanism 7 is horizontal, the connecting rod 2 2 and the center of the wheel hub are in the same horizontal plane. At the same time, the power conversion mechanism 31 changes the driving mechanism 8 from driving the connecting rod 2 2 to move up and down to driving the moving mechanism 9. The moving mechanism 9 drives the L-shaped connecting rod 2 5 to move so that the fixing mechanism 6 is close to the wheel hub on the other side and fixes it. The L-shaped connecting rod 1 4 is fixed to the L-shaped rod 3 by bolts, and the L-shaped connecting rod 1 4 is fixed to the L-shaped connecting rod 2 5 by bolts. Then the forklift steering wheel is fully turned and moved to perform a forklift performance test.

[0037] Combined with Figure 1 , Attachment Figure 2 , Attachment Figure 3 , Attachment Figure 4, Attachment Figure 5 As shown, the adjustment mechanism 21 includes a sliding hole 22 on the connecting rod 2, two adjustment blocks 23 are slidably arranged in the sliding hole 22, one end of the L-shaped rod 3 is provided with a lever 24 located between the two adjustment blocks 23, the movement of the lever 24 drives the two adjustment blocks 23 to move respectively, and the adjustment block 23 is provided with a limiting mechanism 25 for limiting the unidirectional movement of the adjustment block 23, the limiting mechanism 25 includes limiting blocks 26 on both sides of the adjustment block 23, and the connecting rod 22 is provided with a limiting block 26 on both sides of the sliding hole 22 to cooperate with the limiting block 26 A limiting groove 27 is provided, a pawl 28 is hinged on the limiting block 26, and a torsion spring 29 is provided between the pawl 28 and the limiting block 26, a ratchet bar 210 is provided on the side wall of the limiting groove 27 to cooperate with the pawl 28, a sliding hole 211 is provided on the L-shaped rod 3, a shift block 212 extending into the sliding hole 211 is provided on the pawl 28, and an arc groove 214 cooperating with the shift block 212 to slide is provided on the limiting block 26, a shift plate 213 is slidably provided on the adjusting block 23, and one end of the shift plate 213 is in contact with the shift block 212.

[0038] Working principle of the adjustment mechanism 21: in the initial state, the torsion spring 29 is in a tensioned state. When the forklift is moving, the L-shaped rod 3 will move back and forth on the connecting rod 22. During the movement, the lever 24 will push the two adjustment blocks 23 to slide in the sliding hole 22 respectively. Through the action of the pawl 28 and the ratchet bar 210, the adjustment block 23 can only move in one direction. When the lever 24 pushes the two adjustment blocks 23 to the farthest position respectively, the positions of the two adjustment blocks 23 are respectively the maximum value and the minimum value. When resetting is required, the toggle plate 213 is pushed, and the toggle plate 213 pushes the toggle block 212. The toggle block 212 drives the pawl 28 to rotate to make it away from the ratchet bar 210, and then pushes the adjustment block 23 to the initial position.

[0039] Combined with Figure 2 , Attachment Figure 6 , Attachment Figure 7 As shown, the fixing mechanism 6 includes a connecting column 1 61 arranged on an L-shaped connecting rod 2 5, a movable ball 1 62 is provided at one end of the connecting column 1 61, a ball sleeve 1 63 is rotatably provided on the movable ball 1 62, a limiting block 2 64 is provided in the ball sleeve 1 63, and a limiting groove 2 65 is provided on the movable ball 1 62 so that the ball sleeve 1 63 can only rotate horizontally and cooperate with the limiting block 2 64, a connecting column 2 66 is provided at one end of the ball sleeve 1 63, a fixing plate 67 is provided at one end of the connecting column 2 66, a sleeve 68 is rotatably provided on one side of the fixing plate 67, a plurality of fixing shafts 69 are provided in the sleeve 68, an arc block 610 for limiting the wheel hub is movably inserted on the fixing shaft 69, and a spring 2 611 is provided between the arc block 610 and the sleeve 68, a positioning column 612 is movably inserted on the fixing plate 67, a spring 3 613 is provided between the positioning column 612 and the fixing plate 67, and a circular ring 614 is provided at one end of the positioning column 612.

[0040] Working principle of fixing mechanism 6: in the initial state, spring 2 611 and spring 3 613 are in a relaxed state. When driving mechanism 8 drives moving mechanism 9, moving mechanism 9 drives L-shaped connecting rod 2 5 to move toward the wheel hub, and then arc block 610 contacts the wheel hub, and the wheel hub squeezes arc block 610 to make it slide on fixed shaft 69, and spring 2 611 is compressed. During the movement, the wheel hub contacts and pushes ring 614, and spring 3 613 is compressed. When one end of positioning column 612 is in contact with the outer surface of fixed disk 67, tighten the bolts on L-shaped connecting rod 2 5 and L-shaped connecting rod 1 4, and then close driving mechanism 8 to complete the fixing of the wheel hub. By setting movable ball 1 62, ball sleeve 1 63, limit block 2 64, and limit groove 2 65, the wheel hub can be rotated in the horizontal direction. By rotating sleeve 68 and setting it on fixed disk 67, it can adapt to the vertical rotation of the wheel hub.

[0041] Combined with Figure 1 , Attachment Figure 2 , Attachment Figure 8 , Attachment Fig. 9 , Attachment Fig.10 , Attachment Fig.14 As shown, the auxiliary positioning mechanism 7 includes a square sleeve 71 hingedly arranged on the L-shaped rod 3 and a torsion spring 716 is arranged between the square sleeve 71 and the L-shaped rod 3, an extension column 72 is movably inserted on the square sleeve 71 and a reset spring 73 is arranged between the square sleeve 71, one end of the extension column 72 is provided with a movable ball 74, a ball sleeve 75 is rotatably arranged on the movable ball 74, a limit block 76 is arranged in the ball sleeve 75, and a limit groove 77 is provided on the movable ball 74 so that the ball sleeve 75 can only rotate in the horizontal and vertical directions and cooperates with the limit block 76, a threaded column 78 is provided on one side of the ball sleeve 75, a fixed frame 79 is rotatably arranged at one end of the threaded column 78, a plurality of positioning blocks 710 are slidably arranged on the fixed frame 79, a clamping plate 711 for positioning the wheel hub is arranged at one end of the positioning block 710, and a sliding mechanism 712 for driving the positioning block 710 to slide is provided on the threaded column 78.

[0042] Combined with Figure 1 , Attachment Figure 2 , Attachment Figure 8 , Attachment Fig. 9 , Attachment Fig.14 As shown, the sliding mechanism 712 includes a connecting sleeve 713 slidably set on the threaded column 78, and the rotation of the fixing frame 79 can drive the connecting sleeve 713 to rotate. A plurality of power rods 714 are hinged on the connecting sleeve 713, and the other end of the power rod 714 is hinged to the positioning block 710. A threaded sleeve 715 is threadedly connected to the threaded column 78, and the threaded sleeve 715 is rotatably connected to the connecting sleeve 713.

[0043] Working principle of auxiliary positioning mechanism 7: in the initial state, torsion spring 2 716 and return spring 2 73 are in relaxed state. Stop the forklift at the designated position. Due to the different models of forklifts, the height of the wheel hub is also different. Move square sleeve 2 71, torsion spring 2 716 twists, so that square sleeve 2 71 tilts, and then adjust the height of fixing frame 79 to make it correspond to the wheel hub, and then rotate threaded sleeve 715, threaded sleeve 715 moves on threaded column 78 and pushes connecting sleeve 713, connecting sleeve 713 pushes power rod 714, power rod 714 pushes positioning block 710 to move, and clamping plate 711 on positioning block 710 clamps the wheel hub. Due to the different heights of L-shaped rod 3 and wheel hub, ball sleeve 2 75 rotates upward or downward, and then adjusts the position of L-shaped rod 3 to make the position of L-shaped rod 3 close to the wheel hub, extension column 72 slides in square sleeve 2 71 and compresses return spring 2 73, and then fixes L-shaped rod 3 and connecting rod 2 2 by bolts.

[0044] Combined with Figure 1 , Attachment Figure 2 , Attachment Fig.11 As shown, the driving mechanism 8 includes a cavity in a fixed seat 14, a rotating shaft 82 is rotatably provided in the cavity and the rotating shaft 82 can slide up and down, a spring four 81 is provided between the rotating shaft 82 and the cavity, a stud 83 that drives the slider 13 to move up and down is rotatably provided on the connecting rod 12, and the slider 13 is provided with a threaded groove that cooperates with the stud 83, a gear 84 is provided on the rotating shaft 82, and a gear two 85 that meshes with the gear 84 is provided at one end of the stud 83.

[0045] Working principle of driving mechanism 8: in the initial state, spring four 81 is in a relaxed state, shaft one 82 is driven by a motor, and the output end of the motor and shaft one 82 are movably connected, the rotation of the output end of the motor can drive shaft one 82 to rotate, the rotation of shaft one 82 drives gear one 84, gear one 84 drives gear two 85 to rotate, gear two 85 drives stud 83 to rotate, and stud 83 drives slider 13 to move up and down.

[0046] Combined with Figure 1 , Attachment Figure 2 , Attachment Fig.11 , Attachment Fig.12As shown, the moving mechanism 9 includes a connecting rope 91 arranged on an L-shaped connecting rod 25, a guide column 1 92 and a guide column 2 98 for guiding the connecting rope 91 are rotatably provided in the L-shaped rod 3 and the L-shaped connecting rod 1 4 respectively, a winding roller 93 for winding the connecting rope 91 is rotatably provided in the connecting rod 2, a rotating shaft 2 94 is rotatably provided on the fixed seat 14, a gear 3 95 is provided on the rotating shaft 2 94, a driving shaft 96 plugged into the winding roller 93 is provided at one end of the rotating shaft 2 94, and the driving shaft 96 rotates to drive the winding roller 93 to rotate, a socket 2 97 cooperating with the driving shaft 96 is provided on the connecting rod 2, and the power conversion mechanism 31 moves to drive the rotating shaft 1 82 to move downward so that the gear 1 84 is engaged with the gear 3 95.

[0047] Working principle: when the power conversion mechanism 31 moves, it moves the rotating shaft 82 downward so that the gear three 95 engages with the gear one 84, the rotating shaft 82 rotates to drive the gear one 84 to rotate, the gear one 84 drives the gear three 95 to rotate, the gear three 95 drives the rotating shaft two 94 to rotate, the rotating shaft two 94 drives the driving shaft 96 to rotate, the driving shaft 96 drives the winding roller 93 to rotate, the winding roller 93 winds up the connecting rope 91, the guide column one 92 and the guide column two 98 guide the connecting rope 91, the connecting rope 91 contracts and drives the L-shaped connecting rod two 5 to move, thereby driving the fixing mechanism 6 to fix the wheel hub, and at the same time, the setting of the socket two 97 does not affect the lifting and lowering of the connecting rod two 2.

[0048] Combined with Figure 1 , Attachment Figure 2 , Attachment Fig. 9 , Attachment Fig.11 , Attachment Fig.12 , Attachment Fig.14 , Attachment Fig.15 As shown, the power conversion mechanism 31 includes a square sleeve 1 32 arranged on the bottom surface of the connecting rod 2, an extension rod 33 is movably inserted in the square sleeve 1 32, an insert block 34 is movably inserted on the square sleeve 2 71, and a return spring 1 311 is arranged between the square sleeve 2 71, a push block 316 penetrating the square sleeve 2 71 is arranged on the insert block 34, a push groove 317 cooperating with the push block 316 is arranged on the square sleeve 2 71, a slot 35 corresponding to the insert block 34 is arranged on the L-shaped rod 3, and the extension rod 33 is movably inserted in the square sleeve 2 71, and a return spring 1 311 is arranged between the square sleeve 2 71 and the square sleeve 2 71, and a push block 316 penetrating the square sleeve 2 71 is arranged on the square sleeve 2 71. The extension rod 33 is provided with a push rod 36 extending into the slot 35, the fixed seat 14 is provided with a slide groove 37, a slide rod 38 is slidably provided in the slide groove 37, the slide rod 38 is provided with an arc groove 2 39 for driving the rotating shaft 1 82 to move downward, the arc groove 2 39 is a quasi-inclined surface structure, the end of the rotating shaft 1 82 abuts against the arc groove 2 39, the slide rod 38 moves left and right to make the rotating shaft 1 82 move up and down, the connecting rod 2 2 is provided with a socket 1 310 cooperating with the slide rod 38, and one end of the square sleeve 1 32 is in contact with the slide rod 38.

[0049] Working principle: the square sleeve 71 is in an inclined state, the return spring 311 is compressed, the square sleeve 32 is fixed to the extension rod 33 by bolts, and the driving mechanism 8 drives the slider 13 to move up and down. During the movement, the square sleeve 71 drives the extension column 72 to rotate. Since the horizontal distance between the ball sleeve 75 and the L-shaped rod 3 remains unchanged, the square sleeve 71 moves toward the extension column 72, the return spring 73 is compressed, and the square sleeve 71 rotates and gradually tends to be horizontal. The ball sleeve 75 rotates and tends to be horizontal on the movable ball 74. When the L-shaped rod 3 is horizontal with the center of the wheel hub, the square sleeve 71 will Parallel to the L-shaped rod 3, at this time, the reset spring 1 311 pushes the plug block 34 into the slot 35, the plug block 34 pushes the push rod 36 in the slot 35, the push rod 36 drives the extension rod 33 and the square sleeve 1 32 to move, the square sleeve 1 32 pushes the slide bar 38, the slide bar 38 moves, the arc groove 2 39 on the slide bar 38 moves to drive the shaft 1 82 to move downward, the spring 4 81 is compressed, and the gear 1 84 becomes engaged with the gear 3 95 due to the engagement of the gear 2 85, so that the driving mechanism 8 drives the slider 13 to move and becomes the driving moving mechanism 9, and the movement of the plug block 34 is controlled by pushing the push block 316, so that the plug block 34 is reset conveniently.

[0050] In specific use, the forklift is driven to the corresponding position, and then the square sleeve 2 71 is adjusted to tilt it. At this time, the center of the fixing frame 79 is roughly in the same horizontal plane with the center of the wheel hub. Then the clamping plate 711 on the positioning block 710 is driven by the sliding mechanism 712 to clamp the wheel hub. At this time, the center of the fixing frame 79 is in the same horizontal plane with the center of the wheel hub. The L-shaped rod 3 and the connecting rod 2 are fixed by bolts. At this time, the clamping of the wheel hub by the auxiliary positioning mechanism 7 is completed. Then the square sleeve 1 32 and the extension rod 33 are fixed by bolts. The distance between the L-shaped connecting rod 1 4 and the L-shaped rod 3 is adjusted to suit the distance between the rear end of the forklift and the wheel hub. Then the L-shaped connecting rod 1 4 and the L-shaped rod 3 are fixed by bolts. During the adjustment, the connecting rope 91 will be unwound, so as not to affect the distance adjustment between the square sleeve 1 32 and the extension rod 33, and the L-shaped connecting rod 1 4 and the L-shaped rod 3. Then start the motor, the motor drives the driving mechanism 8, and the driving mechanism 8 drives the slider 13 to move. When the center of the fixing frame 79 and the center of the L-shaped rod 3 are in the same horizontal plane, the plug 34 enters the slot 35, so that the power conversion mechanism 31 pushes the rotating shaft 82 to move downward, so that the driving mechanism 8 drives the moving mechanism 9, and the moving mechanism 9 drives the L-shaped connecting rod 2 5 to move. When the positioning column 612 is in contact with the outer surface of the fixing plate 67, the motor is turned off, and the L-shaped connecting rod 2 5 is fixed to the L-shaped connecting rod 1 4 by bolts. At this time, the fixing mechanism 6 to the wheel hub is completed, and then the fixing between the square sleeve 1 32 and the extension rod 33, the L-shaped rod 3 and the connecting rod 2 2 is released. Since the L-shaped connecting rod 2 5 is fixed to the L-shaped connecting rod 1 4, the fixing between the L-shaped connecting rod 2 5 and the wheel hub will not be affected. Then the forklift turns the steering wheel fully, and the forklift stops after turning one circle, as shown in the attached instructions. Fig.16 As shown, C represents a forklift, point A represents the center point of a circle, A is unknown in a specific test, R is the minimum turning radius and is unknown, point B represents the position of the fixed column 1, L1 is the maximum value, and L2 is the minimum value. During the rotation of the forklift, since the fixed column 1 is not at the center position of the circle, the maximum and minimum values ​​passing through the center point A will be generated during the movement, and the adjustment mechanism 21 will record the maximum and minimum values ​​of the fixed column 1 and the L-shaped connecting rod 2 5. The maximum and minimum values ​​here are the length of the connecting rod 2 2 plus the length of the L-shaped rod 3 exposed outside the connecting rod 2 2. The length here is the length on the same line as the wheel hub, excluding the length connected to the L-shaped connecting rod 1 4, plus the distance between the two wheel hubs of the forklift. The distance between the two wheel hubs can be calculated by the L-shaped connecting rod 1 4 and the L-shaped connecting rod 2 5, or the distance between the two wheel hubs can be directly measured. The adjustment mechanism 21 records the length of the L-shaped rod 3 exposed outside the connecting rod 2 2. At this time, the sum of L1 and L2 is the diameter of the circle, and half of the diameter is the minimum turning radius R.

[0051] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A forklift turning performance testing device, comprising a fixed column (1), a bearing (11) rotatably provided on the fixed column (1), a connecting rod (12) provided on the bearing (11), a slider (13) slidably provided on the connecting rod (12), characterized in that: The slider (13) has a second connecting rod (2) at one end, an L-shaped rod (3) is movably connected to the second connecting rod (2), an L-shaped connecting rod (4) is movably connected to one end of the L-shaped rod (3), and an L-shaped connecting rod (5) is movably connected to one end of the L-shaped connecting rod (4); The L-shaped connecting rod (5) is provided with a fixing mechanism (6) for fixing the wheel hub, the L-shaped rod (3) is provided with an auxiliary positioning mechanism (7) for adjusting the height of the L-shaped rod (3) at a position corresponding to the fixing mechanism (6), the connecting rod (1) is provided with a fixing seat (14) at one end, the fixing seat (14) is provided with a driving mechanism (8) for driving the connecting rod (2) to move up and down, the connecting rod (2) is provided with a moving mechanism (9) for driving the L-shaped connecting rod (5) to move horizontally, the auxiliary positioning mechanism (7) is provided on the L-shaped rod (3) and when it is horizontal, the driving mechanism (8) drives the connecting rod (2) to move up and down to drive the L-shaped connecting rod (5) to move horizontally, and an adjusting mechanism (21) for determining a minimum outer turning radius is provided between the connecting rod (2) and the L-shaped rod (3).

2. A forklift turning performance testing device according to claim 1, characterized in that: The adjustment mechanism (21) comprises a sliding hole (22) on the second connecting rod (2), two adjustment blocks (23) are slidably arranged in the sliding hole (22), a lever (24) located between the two adjustment blocks (23) is provided at one end of the L-shaped rod (3), the lever (24) moves to drive the two adjustment blocks (23) to move respectively, a limiting mechanism (25) is provided on the adjustment block (23) for limiting the unidirectional movement of the adjustment block (23), the limiting mechanism (25) comprises a limiting block (26) on both sides of the adjustment block (23), a limiting groove (27) cooperating with the limiting block (26) is provided on both sides of the sliding hole (22) on the second connecting rod (2), a ratchet (28) is hinged on the limiting block (26), a torsion spring (29) is provided between the ratchet (28) and the limiting block (26), and a ratchet bar (210) cooperating with the ratchet (28) is provided on the side wall of the limiting groove (27).

3. A forklift turning performance testing device according to claim 1, characterized in that: The fixing mechanism (6) comprises a connecting column (61) arranged on an L-shaped connecting rod (5), a movable ball (62) being arranged at one end of the connecting column (61), a ball sleeve (63) being rotatably arranged on the movable ball (62), a limiting block (64) being arranged inside the ball sleeve (63), a limiting groove (65) being arranged on the movable ball (62) so that the ball sleeve (63) can only rotate horizontally and cooperates with the limiting block (64), a connecting column (66) being arranged at one end of the ball sleeve (63), a fixing plate (67) being arranged at one end of the connecting column (66), a sleeve (68) being rotatably arranged on one side of the fixing plate (67), a plurality of fixing shafts (69) being arranged inside the sleeve (68), an arc block (610) for limiting the wheel hub being movably inserted on the fixing shaft (69), and a spring (611) being arranged between the arc block (610) and the sleeve (68).

4. A forklift turning performance testing device according to claim 1, characterized in that: The auxiliary positioning mechanism (7) comprises a second square sleeve (71) hingedly arranged on the L-shaped rod (3), and a second torsion spring (716) is arranged between the second square sleeve (71) and the L-shaped rod (3); an extension column (72) is movably inserted on the second square sleeve (71) and a second return spring (73) is arranged between the second square sleeve (71); one end of the extension column (72) is provided with a second movable ball (74); a second ball sleeve (75) is rotatably arranged on the second movable ball (74); a third limit block (76) is arranged in the second ball sleeve (75); and the movable ball (74) is provided with a second ball sleeve (75) for rotation. The second (74) is provided with a limiting groove (77) which enables the second ball sleeve (75) to rotate only in the horizontal and vertical directions and cooperates with the limiting block (76); a threaded column (78) is provided on one side of the second ball sleeve (75); a fixing frame (79) is rotatably provided at one end of the threaded column (78); a plurality of positioning blocks (710) are slidably provided on the fixing frame (79); a clamping plate (711) for positioning the wheel hub is provided at one end of the positioning block (710); and a sliding mechanism (712) for driving the positioning block (710) to slide is provided on the threaded column (78).

5. A forklift turning performance testing device according to claim 4, characterized in that: The driving mechanism (8) comprises a cavity in a fixed seat (14), a rotating shaft (82) is rotatably provided in the cavity and the rotating shaft (82) can slide up and down, a spring (81) is provided between the rotating shaft (82) and the cavity, a driving slider (13) is rotatably provided on the connecting rod (12) to move a stud (83) up and down, and the slider (13) is provided with a threaded groove that cooperates with the stud (83), a gear (84) is provided on the rotating shaft (82), and a gear (85) is provided at one end of the stud (83) to mesh with the gear (84).

6. A forklift turning performance testing device according to claim 5, characterized in that: The moving mechanism (9) comprises a connecting rope (91) arranged on the second L-shaped connecting rod (5); a guide column (92) and a guide column (98) for guiding the connecting rope (91) are rotatably provided in the L-shaped rod (3) and the first L-shaped connecting rod (4); a winding roller (93) for winding the connecting rope (91) is rotatably provided in the second connecting rod (2); a rotating shaft (94) is rotatably provided on the fixed seat (14); a gear (95) is provided on the second rotating shaft (94); a driving shaft (96) plugged into the winding roller (93) is provided at one end of the second rotating shaft (94); the driving shaft (96) rotates to drive the winding roller (93) to rotate; a socket (97) matching the driving shaft (96) is provided on the second connecting rod (2); the power conversion mechanism (31) moves to drive the first rotating shaft (82) to move downward so that the gear (84) is meshed with the gear (95).

7. A forklift turning performance testing device according to claim 5, characterized in that: The power conversion mechanism (31) comprises a square sleeve (32) arranged on the bottom surface of the second connecting rod (2), an extension rod (33) is movably inserted in the square sleeve (32), an insert block (34) is movably inserted on the second square sleeve (71) and a return spring (311) is arranged between the second square sleeve (71), a slot (35) corresponding to the insert block (34) is arranged on the L-shaped rod (3), a push rod (36) extending into the slot (35) is arranged on the extension rod (33), a sliding groove (37) is arranged on the fixed seat (14), a sliding rod (38) is slidably arranged in the sliding groove (37), an arc groove (39) is arranged on the sliding rod (38) for driving the first rotating shaft (82) to move downward, a socket (310) is arranged on the second connecting rod (2) for cooperating with the sliding rod (38), and one end of the square sleeve (32) is in contact with the sliding rod (38).

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