A pallet handling fork lift truck

Abstract

The utility model discloses a kind of turnover box carrying fork truck, it is related to goods carrying device technical field, including two left and right symmetrical support parts, the support part of one side is fixedly connected straight bar, the support part of other side is fixedly connected sleeve bar;Straight bar and sleeve bar are slidably connected;Fixedly connected with fixed plate on straight bar;Several adjusting holes are set on fixed plate, and several locking holes corresponding to adjusting hole are set on sleeve bar;Adjusting hole and locking hole are provided with detachable connecting rod, to limit the relative sliding of sleeve bar relative to straight bar.The utility model has the characteristics of convenient and labor-saving when adjusting fork leg transverse spacing in actual operation.

Description

Technical Field

[0001] This utility model relates to the technical field of cargo handling devices, specifically a forklift for handling turnover boxes. Background Technology

[0002] Turnover boxes, also known as logistics boxes, are widely used in industrial manufacturing fields such as machinery, automobiles, home appliances, and electronics. They are used to store and transport various materials and parts between different production lines. In practical use, they have the advantages of being clean, safe, and easy to manage. In the early days, the transfer of turnover boxes relied on purely manual handling, which required a lot of manpower. Furthermore, during manual handling, the stacking and unpacking of turnover boxes could cause vibration, tilting, and shaking of the materials inside due to differences in the posture, speed, and other actions of the handlers, which could potentially damage the materials.

[0003] To prevent human-caused accidents, dedicated forklifts are designed for transporting turnover boxes, ensuring stable operation. However, in actual use, due to the size differences of various materials, the corresponding turnover box sizes also vary. Consequently, the forklift's feet need to have corresponding size adjustment functions to adapt to different turnover boxes. Existing turnover box forklifts use a telescopic beam to adjust the width between the two forks, with bolts and movable screw-hole clamps used for locking at the overlapping points of the telescopic beam structure. While this fixing method is simple and reliable, in actual operation, the screw-hole clamps are movable. Adjusting the relative sliding distance of the telescopic beam requires manually maneuvering the narrow space under the beam and blindly installing the bolts through the screw-hole clamps. This introduces unnecessary trouble into adjusting the fork distance and, due to the need to repeatedly disassemble and reassemble several bolts, makes the overall adjustment process cumbersome and inflexible for multiple adjustments. Utility Model Content

[0004] To address the difficulties in installing movable screw hole clamps in limited spaces, as mentioned in the background section, and the cumbersome nature of bolt limit adjustment, a turnover box handling forklift is proposed, ensuring flexible and convenient fork adjustment.

[0005] This utility model discloses a forklift for transporting turnover boxes, comprising two symmetrically arranged support parts. A straight rod is fixedly connected to one support part, and a sleeve rod is fixedly connected to the other support part. The straight rod and the sleeve rod are slidably connected. A fixing plate is fixedly connected to the straight rod. Several adjustment holes are provided on the fixing plate, and several locking holes corresponding to the adjustment holes are provided on the sleeve rod. A detachable connecting rod is provided in the adjustment holes and the locking holes to limit the relative sliding of the sleeve rod relative to the straight rod.

[0006] As a further improvement of this utility model, the sleeve is sleeved on the upper outer side of the straight rod, and the fixing plate is fixedly set on the lower side of the straight rod; the adjusting hole of the fixing plate is threaded, and the adjusting hole is vertically aligned with the locking hole of the upper sleeve and fixedly connected by bolts to restrict the relative horizontal sliding of the straight rod and the sleeve.

[0007] As a further improvement of this utility model, the support part includes a movable frame disposed on the lower side and a lifting frame disposed on the upper side; a lifting mechanism is provided on the movable frame, and the lifting mechanism is movably connected to the lifting frame, having the ability to lift the lifting frame relative to the movable frame upward.

[0008] As a further improvement of this utility model, the front end of the mobile frame is rotatably equipped with a guide wheel that has the ability to rotate omnidirectionally around the vertical direction, and the rear end is rotatably equipped with a load-bearing wheel, so that the mobile frame has the ability to translate. In addition, a bushing is provided at the wheel axle gap of the load-bearing wheel to prevent the load-bearing wheel from vibrating axially when rolling, which would affect the stability of the turnover box transfer.

[0009] As a further improvement of this utility model, a pair of handles are symmetrically arranged at the front end of the mobile frame, and the upper ends of the handles are bent inward; lifting mechanisms are arranged on both sides of the mobile frame, and the driving ends of the two lifting mechanisms are connected to driving pedals, which extend to the front of the handles and bend inward; the inward bending parts of the handles and driving pedals are symmetrical from left to right, and connecting sleeves are movably sleeved on the outer side of the inward bending parts.

[0010] As a further improvement of this utility model, it also includes an automatic width adjustment mechanism, the two ends of which are connected to the support parts on both sides, and have the ability to adjust the lateral spacing between the support parts on both sides arbitrarily.

[0011] As a further improvement of this utility model, the automatic width adjustment mechanism includes a compressed air rod. The compressed air rod has the ability to expand and extend to both ends when the air pressure switch is turned on, and can maintain its overall length when the air pressure switch is turned off. One end of the compressed air rod is connected to the non-fixed end of the straight rod, and the other end is connected to the non-fixed end of the sleeve rod.

[0012] As a further improvement of this utility model, a groove for a parallel compressed air rod is provided on the side wall near the fixed end of the straight rod, and the non-fixed end of the sleeve rod extends through the groove to be fixedly connected to the end of the compressed air rod.

[0013] As a further improvement of this utility model, the automatic width adjustment mechanism also includes a connecting handle and a connecting support rod. A pair of connecting handles are respectively rotatably disposed on the inner wall surface of the left and right support parts. The connecting handle located on the side of the fixed end of the sleeve rod is provided with a pressure switch for the compressed air rod connected by a torsion bar. The connecting handle has the ability to open or close the pressure switch of the compressed air rod by the torsion bar. Each connecting handle is rotatably connected to a connecting support rod. The movable ends of the two connecting support rods extend upward at an angle and are hinged to each other.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] The fixing plate of this utility model, namely the screw hole clamp in the background technology, is fixedly set on the lower side of the straight rod and has multiple screw holes. When adjusting the relative sliding position of the straight rod and the sleeve rod, the adjustment hole and the locking hole can be directly aligned and fixed. This directly avoids the inconvenience of blindly adjusting the position of the fixing plate by reaching into the narrow space under the straight rod, realizes convenient and quick distance adjustment, and reduces the difficulty of screw disassembly and assembly. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of a half-section of one side of the support portion of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the load-bearing wheel of this utility model;

[0019] Figure 4 This is a schematic diagram of the bottom structure of the bottom telescopic crossbeam of this utility model;

[0020] Figure 5 This is a top view of the telescopic beam of this utility model and a comparison of its telescopic changes;

[0021] Figure 6 This is a cross-sectional structural diagram of the telescopic crossbeam of this utility model;

[0022] Figure 7 This is a schematic diagram of the bottom structure of the automatic width adjustment mechanism of this utility model;

[0023] Figure 8 This is a top view schematic diagram of the automatic width adjustment mechanism of this utility model;

[0024] Figure 9 This is a schematic diagram of the connecting handle and connecting support rod of this utility model;

[0025] Figure 10 This is a schematic diagram of the extension and retraction of the automatic width adjustment mechanism of this utility model (the top diagram is the initial state; the middle diagram is the retracted state; and the bottom diagram is the extended state).

[0026] 1. Moving frame; 110. Guide wheel; 111. Load-bearing wheel; 1111. Bushing; 2. Lifting frame; 12. Support unit; 121. Telescopic crossbeam; 1211. Straight rod; 1212. Sleeve rod; 1213. Fixing plate; 1214. Adjustment hole; 1215. Locking hole; 122. Handle; 13. Connecting sleeve; 3. Lifting mechanism; 301. Drive pedal; 4. Automatic width adjustment mechanism; 401. Compressed air rod; 402. Connecting handle; 4021. Torsion bar; 403. Connecting support rod. Detailed Implementation

[0027] Specific Implementation Example 1: Please refer to the appendix Figure 1 - Appendix Figure 6

[0028] A forklift for transporting turnover boxes includes a support unit 12 and a lifting mechanism 3.

[0029] like Figure 1 and Figure 2 As shown, the support part 12 is a horizontal beam frame structure arranged symmetrically on the left and right. Figure 2 (Structure shown in the dashed box) Each support part 12 includes a lower movable frame 1 and an upper lifting frame 2. A lifting mechanism 3 is fixedly installed on the upper side of the movable frame 1, and the lifting mechanism 3 is movably connected to the lower side of the lifting frame 2. The driving end of the lifting mechanism 3 is connected to a driving pedal 301. The lifting mechanism 3 is existing technology. Pressing down on the driving pedal 301 can drive the lifting mechanism 3 to lift the lifting frame 2 upward.

[0030] Vertical handles 122 are provided on both sides of the front end of the mobile frame 1. The upper ends of the handles 122 are bent inward and extend in opposite directions. The drive pedals 301 on both sides extend to the front of the handles 122 and bend inward. The inward bending parts of the handles 122 and drive pedals 301 on both sides are symmetrical and are movably fitted with connecting sleeves 13. When the handles 122 and drive pedals 301 on both sides move closer or further apart during the lateral spacing adjustment, the connecting sleeves 13 always connect the bending parts on the left and right sides of the two.

[0031] The front sides of the mobile frame 1 are equipped with a pair of guide wheels 110 capable of omnidirectional rotation around the vertical direction, and the rear sides of the mobile frame 2 are equipped with load-bearing wheels 111. Figure 3 As shown, bushings 1111 are provided at the gaps on both sides of the axle of the load wheel 111 to limit the axial vibration of the load wheel 1111 when it rolls.

[0032] Between the horizontal beams on both sides of the movable frame 1 and the lifting frame 2, there is a horizontal and vertical telescopic beam 121 structure. The telescopic beam 121 is a sheet metal part, including a straight rod 1211 and a sleeve rod 1212. The sleeve rod 1212 is movably sleeved on the outside of the straight rod 1211 and has the ability to slide and extend relative to each other. One end of the straight rod 1211 is fixedly connected to the inside of the support part 12 on one side, and one end of the sleeve rod 1212 is fixedly connected to the inside of the support part 12 on the other side.

[0033] Furthermore, such as Figures 4-5 As shown, three evenly spaced locking holes 1215 are provided on the upper side of the sleeve rod 1212, and a fixing plate 1213 is fixedly connected to the lower side of the straight rod 1211. The fixing plate 1213 has an adjustment hole 1214 vertically corresponding to the locking holes 1215. The adjustment hole 1214 passes through the straight rod 1211 and has threads inside. Figure 6 As shown, adjust the extension distance of the straight rod 1211 and the sleeve rod 1212 and make the locking hole 1215 and the adjusting hole 1214 vertically aligned. Insert screws through and screw them into the corresponding locking holes 1215 and adjusting holes 1214, so that the sleeve rod 1212 and the fixing plate 1213 clamp the straight rod 1211, locking and restricting the relative extension and retraction.

[0034] Specific Implementation Example 2: Please refer to Appendix Figure 7. Figure 10

[0035] Based on the first specific embodiment, an automatic width adjustment mechanism 4 is added. The automatic width adjustment mechanism 4 includes a compressed air rod 401, a connecting handle 402, and a connecting support rod 403.

[0036] The compressed air rod 401 is installed within the telescopic beam 121 structure. When the air pressure switch is open, the compressed air rod 401 has the ability to extend from the compression cylinder end and maintains its overall length when the air pressure switch is closed. The compressed air rod 401 is arranged parallel to the lower side of the straight rod 1211. The straight rod 1211 has a slot extending parallel to the compressed air rod 401 at the middle of the end connected to the support part 12. The sleeve rod 1212 has a protrusion extending through the slot of the straight rod 1211 at its non-fixed end, which is not connected to the support part 12. The compression cylinder end of the compressed air rod 401 is connected to the non-fixed end of the straight rod 1211, and the air rod end of the compressed air rod 401 is connected to the protrusion of the sleeve rod 1212 that passes through the slot. When the air rod of the compressed air rod 401 extends, the non-fixed ends of the straight rod 1211 and the sleeve rod 1212 are pushed away from each other, thereby driving the support parts 12 connected to the fixed ends of the straight rod 1211 and the sleeve rod 1212 to move closer to each other, thereby reducing the lateral distance between the two support parts 12.

[0037] Furthermore, a pair of connecting handles 402 are rotatably connected to the inner side of the two side support parts 12. The rotation axis of the connecting handles 402 is collinear with the axis of the compressed air rod 401. At the fixed end of the sleeve rod 1212, the connecting handles 402 are fixedly provided with a connecting torsion rod 4021 that connects to the compression cylinder end of the compressed air rod 401. The connecting torsion rod 4021 is connected to the air pressure switch inside the compression cylinder. When the connecting torsion rod 4021 rotates around the axis, it can open the air pressure switch.

[0038] The side wall of the connecting handle 402 facing the handle 122 has a radially extending protruding shaft. Both sides of the connecting handle 402 have a connecting support rod 403 rotatably connected to the protruding shaft. The movable ends of the two connecting support rods 403 extend upward at an angle and are hinged to each other.

[0039] Principle of telescopic movement:

[0040] When the hinged ends of the two connecting struts 403 are pressed down lightly, the connecting struts 403 drive the support handle 402 to rotate. The connecting handle 402 located at the fixed end of the sleeve rod 1212 drives the connecting torsion rod 4021 to rotate, opening the air pressure switch of the compression cylinder and realizing the close movement of the two support parts 12.

[0041] When the hinged ends of the two connecting struts 403 are pressed downwards, simultaneously with opening the air pressure switch of the compression rod 401, the rotating connection ends of the two connecting struts 403 and the connecting handle 402 move away from each other, applying an expansion force to the inner side of the two side support parts 12. This drives the two side support parts 12 to move away from each other and presses the air rod of the compression rod 401 back into the compression cylinder, realizing the movement of the two side support parts 12 away from each other. The compression rod 401, under compression, re-accumulates the pressure of the extended air rod to provide driving force for the next movement of the support parts 12 closer together. Thanks to the automatic width adjustment mechanism 4, the lateral width adjustment is time-saving and labor-saving, eliminating the need for manual effort to pull open or close the two side support parts 12.

[0042] The above description is only a preferred embodiment of the present utility model and is intended to illustrate the principle and effect of the present utility model, and is not intended to limit the present utility model. All variations, modifications and substitutions within the spirit and principle of the present design are within the protection scope of the present utility model.

Claims

1. A forklift for transporting turnover boxes, characterized in that: It includes two symmetrically arranged support parts (12) and a connecting rod. One support part (12) is fixedly connected to a straight rod (1211), and the other support part (12) is fixedly connected to a sleeve rod (1212). The straight rod (1211) and the sleeve rod (1212) are slidably connected. A fixing plate (1213) is fixedly connected to the straight rod (1211). Several locking holes (1215) are opened on the sleeve rod (1212). The connecting rod is inserted into the locking hole (1215) for limiting. After installation, the upper part of the connecting rod abuts against the sleeve rod (1212), and the lower part of the connecting rod is detachably connected to the fixing plate (1213) so that the sleeve rod (1212) abuts against the straight rod (1211) or the fixing plate (1213).

2. The forklift for transporting turnover boxes according to claim 1, characterized in that: Several through holes are opened on the surface of the straight rod (1211), and each through hole corresponds to the locking hole (1215); the sleeve rod (1212) is sleeved on the upper outer side of the straight rod (1211), and the fixing plate (1213) is fixedly set on the lower side of the straight rod (1211); the connecting rod is inserted into the locking hole (1215).

3. The forklift for transporting turnover boxes according to claim 1, characterized in that: The fixing plate (1213) has several adjustment holes (1214), each of which is threaded. The adjustment holes (1214) are vertically aligned with the locking holes (1215) of the upper sleeve rod (1212) and are fixedly connected by screws.

4. A forklift for transporting turnover boxes according to claim 1, characterized in that: The support (12) includes a movable frame (1) on the lower side and a lifting frame (2) on the upper side; a lifting mechanism (3) is provided on the movable frame (1), and the lifting mechanism (3) is movably connected to the lifting frame (2) and has the ability to lift the lifting frame (2) relative to the movable frame (1).

5. A forklift for transporting turnover boxes according to claim 4, characterized in that: The front end of the mobile frame (1) is rotatably equipped with a guide wheel (110) that has the ability to rotate omnidirectionally around the vertical direction, and the rear end is rotatably equipped with a load wheel (111) so that the mobile frame (1) has the ability to translate. A bushing (1111) is provided at the wheel axle gap of the load wheel (111).

6. A forklift for transporting turnover boxes according to claim 4, characterized in that: A pair of handles (122) are symmetrically arranged at the front end of the mobile frame (1), and the upper ends of the handles (122) are bent inward. Lifting mechanisms (3) are arranged on both sides of the mobile frame (1), and the driving ends of the two lifting mechanisms (3) are connected to driving pedals (301). The two driving pedals (301) extend to the front of the handles (122) and bend inward. The inward bending parts of the handles (122) and driving pedals (301) are symmetrical on the left and right, and a connecting sleeve (13) is movably sleeved on the outside of the inward bending part.

7. A forklift for transporting turnover boxes according to claim 1, characterized in that: It also includes an automatic width adjustment mechanism (4), the two ends of which are connected to the support parts (12) on both sides, and have the ability to adjust the lateral spacing of the support parts (12) on both sides arbitrarily.

8. A forklift for transporting turnover boxes according to claim 7, characterized in that: The automatic width adjustment mechanism (4) includes a compressed air rod (401). The compressed air rod (401) has the ability to expand and extend to both ends when the air pressure switch is turned on and can maintain its overall length when the air pressure switch is turned off. One end of the compressed air rod (401) is connected to the non-fixed end of the straight rod (1211), and the other end is connected to the non-fixed end of the sleeve rod (1212).

9. A forklift for transporting turnover boxes according to claim 8, characterized in that: The straight rod (1211) has a slot for a parallel compressed air rod (401) on one side wall near the fixed end. The non-fixed end of the sleeve rod (1212) extends through the slot to be fixedly connected to the end of the compressed air rod (401).

10. A forklift for transporting turnover boxes according to claim 8, characterized in that: The automatic width adjustment mechanism (4) also includes a connecting handle (402) and a connecting support rod (403). A pair of connecting handles (402) are rotatably mounted on the inner wall of the left and right support parts (12). The connecting handle (402) located on the fixed end of the sleeve rod (1212) is provided with a torsion bar (4021) to connect the air pressure switch of the compressed air rod (401). The connecting handle (402) has the ability to open or close the air pressure switch of the compressed air rod (401) through the torsion bar (4021). Each connecting handle (402) is rotatably connected to a connecting support rod (403). The movable ends of the two connecting support rods (403) extend upward at an angle and are fixed together by hinge.

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