Inner sliding frame and bridge structure assembly for three-way fork

Abstract

The invention provides an inner sliding frame and bridge frame structure assembly for a three-way fork. The inner sliding frame and bridge frame structure assembly comprises a bridge frame and an inner sliding frame. The inner sliding frame comprises a first rack, a first structure protruding part and a clamping groove. The first rack comprises a main roller vertical plate and a rack structure; the bridge comprises a first main roller, a first auxiliary roller, a transmission shaft and a gear. Longitudinal movement of the inner sliding frame and the bridge frame is limited through cooperation of the main rolling wheels, the auxiliary rolling wheels and the racks, and meanwhile longitudinal loads (cargo gravity) from loads are borne, so that the system is more stable; the rack is provided with a clamping groove and a protruding part, the bearing capacity is higher, and the service life is longer; and meanwhile, the racks on the upper side and the lower side are matched with the gears to bear transverse torque from loads, so that the system is more stable. The inner sliding frame and bridge frame structure assembly for the three-way fork has high stability and good durability.

Description

Technical Field

[0001] The invention belongs to the technical field of forklift equipment, and in particular relates to an inner slide frame and a bridge frame structure component for a three-way fork. Background Art

[0002] In today's society, the logistics industry is developing rapidly. Forklifts are the most commonly used handling and stacking tools in the logistics industry. For the stacking of standard pallets, especially narrow aisle forklifts, that is, three-way stacking forklifts, among which the manned three-way stacking forklifts are highly efficient, low cost and cost-effective. Among them, the inner slide and bridge structure components are a crucial component of the manned forklift. It plays the role of a bridge connecting the door frame and fork frame and other components. At the same time, the bridge must be able to slide on the inner shelf to realize the lateral movement of the three-way fork. Therefore, the requirements for the inner slide and bridge structure components are quite high, and they need to be controlled in weight, the assembly process must be as simple as possible, and the strength must be extremely high and the fatigue life must be very long. Therefore, the present invention provides a new type of inner slide and bridge frame structure assembly for three-way forks, which replaces conventional slide groove rail designs and the like. Compared with conventional designs, it has higher strength and durability, and the inner slide structure is evenly stressed and has a simple structure. The inner slide and bridge frame structure assembly will not be damaged and unusable due to long-term use. At the same time, when the roller is damaged with a very small probability, the assembled roller provided by the present invention can conveniently disassemble the damaged roller for replacement, which is more in line with current needs. Summary of the invention

[0003] The present invention is to solve all or part of the problems of the prior art mentioned above. The present invention provides an inner slide and bridge structure assembly for a three-way fork, which improves the overall structural load capacity, troubleshooting capability, operation stability and overall structural strength.

[0004] The present invention provides an inner slide structure assembly for a three-way fork, comprising at least an inner slide weld and a first rack; the inner slide weld comprises at least a rack mounting plate, the rack mounting plate is fixed on the inner slide weld,

[0005] The first rack is installed on the rack mounting plate, and the first rack structure is divided into a rack structure and a main roller upright plate; wherein the main roller upright plate is in the shape of an elongated strip, and its cross-section is also in the shape of a rectangle, and its function is equivalent to the groove structure in the traditional design, and both provide running tracks for the main roller and the auxiliary roller. The difference from the groove structure in the prior art is that the main roller upright plate of the present invention has higher strength and is easy to manufacture; at the same time, it is different from the existing separate upright plate design, and the main roller upright plate is directly formed on the rack, which has higher strength and is not easy to be damaged compared with the separate design.

[0006] There are two groups of rack mounting plates, one group is arranged on each of the upper and lower sides welded on the inner slide, and the upper and lower rack mounting plates are each installed with a first rack; wherein the rack mounting plates can better fix the first rack to prevent the first rack from falling off and causing danger when the load is heavy.

[0007] A card slot is provided on the inner side of the rack mounting plate and the first rack mounting position, and the height of the card slot is equal to or slightly greater than the height of the structural part of the first rack that is inserted into the card slot; wherein, the card slot can provide support for the rack mounting plate and the first rack on the rack mounting plate, disperse the force at the connection between the rack mounting plate, extend the service life of the rack mounting plate and the first rack, and increase the maximum bearing capacity of the above two.

[0008] The cross section of the first rack is a "convex" shape; the first rack and the main roller stand plate thereon are the same as a whole and have higher strength.

[0009] The width of the main roller upright plate ranges from 25 to 40 mm. Compared with the traditional design, the main roller upright plate is thicker, more stable, stronger, has a longer service life and greater strength.

[0010] The longitudinal section of the main roller stand is a rectangular structure.

[0011] The three-way fork bridge frame structure assembly at least includes a bridge frame; the bridge frame at least includes a first main roller, a first secondary roller, a transmission shaft, a gear and a bridge frame structure. The first secondary roller and the gear are sequentially arranged at one end of the transmission shaft. The first main roller is installed on the bridge frame structure, and a gap is left between the first main roller and the first secondary roller to accommodate the main roller vertical plate; wherein the gap leaves a buffer space for the main roller vertical plate to prevent damage.

[0012] The first main roller and the first secondary roller are parallel rollers; wherein, the first main roller is parallel to the first secondary roller, and the main roller vertical plates are clamped to form a track, thereby ensuring the stable operation of the bridge frame on the inner slide.

[0013] The first main roller is detachably mounted on the bridge frame; wherein, the traditional welding method makes it extremely difficult to disassemble the forklift roller. The first main roller is detachably mounted on the bridge frame, thereby ensuring that the first main roller and related components can be easily repaired in the event of a fault.

[0014] The detachable manner is: the first main roller is detached by unscrewing the nut and removing the main roller assembly.

[0015] The bridge assembly includes a bridge frame, the inner slide assembly includes an inner slide welded together, and the bridge frame is slidably connected to the inner slide welded together;

[0016] The three-way fork inner slide and bridge frame structure components include an inner slide weld and a bridge frame; the inner slide weld includes a first rack and a rack mounting plate, the first rack is installed on one side of the first rack mounting plate; a first structural protrusion and a slot, the first rack is arranged on the first structural protrusion and abuts against the first structural protrusion, the first rack is installed on one side of the first rack mounting plate, the first rack and the first rack mounting plate are clamped in the slot; the first rack includes a main roller upright plate and a rack structure, the main roller upright plate is located on the rack structure; the bridge frame includes a main roller, a first secondary roller, a transmission shaft, a gear and a bridge frame crossbeam structure, the first main roller and the first secondary roller are arranged on both sides of the first rack to clamp the first rack, the gear is arranged on the transmission shaft and arranged corresponding to the first rack, and the gear is meshed with the first rack; the first secondary roller, the first main roller, and the gear constitute a first roller assembly.

[0017] The first main roller and the first auxiliary roller are located at the same height and the gap between the first main roller and the first auxiliary roller is the guide rail distance, and the first gear matches the rack. The first main roller is integrated on the transmission shaft, and the first main roller and the first auxiliary roller are separated only by the main roller stand, so that the length of the beam is greatly shortened, stress deformation is reduced, and it is more conducive to the stability of the equipment. In the preferred solution, each of the upper and lower beams is provided with a set of first roller assemblies.

[0018] The depth of the slot can be adjusted according to actual needs. Since the rack rail assembly needs to bear the gravity or other forces of other objects such as the bridge assembly, when inserted into the slot for installation, the portion of the slot bottom surface in contact with the rack rail assembly provides support, greatly reducing the installation strength requirements for the rack rail assembly fixed to the rack mounting plate. In this case, the cross-section of the rack and the rail assembly is "convex".

[0019] The first roller assembly, the first rack, and the rack mounting plate are respectively installed on the bridge beam structure in one set above and below the bridge frame assembly.

[0020] A slot is provided inside the rack mounting plate and the first rack mounting position, and a height of the slot is equal to or slightly greater than a height of a structural portion of the first rack that is snapped into the slot.

[0021] The main roller upright plate and the rack structure are cut and formed from the same blank, and the main roller upright plate and the rack structure are a whole; wherein, in conventional technical means, the main roller upright plate and the rack structure are designed separately and installed together by assembly. The above method has the problem that the main roller upright plate and the rack structure are not firmly assembled and have low strength. In the present solution, the main roller upright plate and the rack structure are cut from a whole piece of material, do not require assembly, have high strength, and improve the stability and safety of the rack.

[0022] The bridge frame includes a main roller assembly and a nut, and the main roller is detachably mounted on the bridge frame structure through the main roller assembly and the nut.

[0023] The first racks in one set, one set above the other, are made from the same embryonic body, and before assembly, the embryonic body is separated into two first racks that match each other.

[0024] The rack structures of the first racks in the upper and lower sets of the first roller assemblies overlap in vertical projection, ensuring the stability of the bridge frame running on the inner slide. At the same time, due to the design of the above-mentioned same embryonic body molded rack, its running stability is extremely high.

[0025] The clamping slot leaves a movable gap for the first rack to prevent the first rack from being damaged.

[0026] The first auxiliary roller is fixedly connected to the transmission shaft, and the auxiliary roller rotates along with the transmission shaft.

[0027] The first rack is installed on the inner slide frame by threading, which makes installation easier and the structure simpler. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 Schematic diagram of an inner slide for a three-way fork and an inner slide of a bridge structure assembly in an embodiment of the present invention;

[0029] Figure 2 It is a schematic diagram of the inner slide and bridge structure assembly for a three-way fork in an embodiment of the present invention;

[0030] Figure 3 It is an overall schematic diagram of the inner slide and bridge structure assembly for a three-way fork in an embodiment of the present invention;

[0031] Figure 4 Detailed schematic diagram of the inner slide and the rack of the bridge structure assembly for the three-way fork in the embodiment of the present invention;

[0032] Figure 5 It is an overall schematic diagram of the inner slide and bridge structure assembly for a three-way fork in an embodiment of the present invention;

[0033] Figure 6 It is an overall schematic diagram of the inner slide and bridge structure components for a three-way fork in an embodiment of the present invention. DETAILED DESCRIPTION

[0034] 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.

[0035] The technical problems solved by this embodiment include at least:

[0036] 1. How to improve the bearing capacity of the bridge and inner slide structure;

[0037] 2. How to improve the service life and maximum load-bearing capacity of the rack;

[0038] 3. How to improve the fit between the upper and lower racks;

[0039] 4. How to simplify the removal of the roller.

[0040] For the convenience of explanation, this embodiment shows

[0041] An inner slide structure assembly for a three-way fork;

[0042] like Figure 1 , 2 As shown, an embodiment shows an inner slide structure component for a three-way fork, which includes at least an inner slide weld 200 and first racks 201, 202; the inner slide weld 200 includes at least a rack mounting plate 205, the rack mounting plate 205 is fixed to the inner slide weld 200 by welding, the first racks 201, 202 are mounted on the rack mounting plate 205 by fixed installation and stable installation by the friction of the threaded structure, the first racks 201, 202 are structurally divided into a rack structure and a main roller upright plate, in this embodiment, the rack structure and the main roller upright plate are integrated, the whole is a long strip, and its cross-section is a convex shape, and for the convenience of distinction, they are divided into a main roller upright plate and a rack structure by function.

[0043] There are two groups of rack mounting plates 205, one group is provided on the upper and lower sides of the inner slide weld 200, and the upper and lower rack mounting plates 205 are respectively provided with first racks 201 and 202, and the shapes of the upper and lower groups of first racks 201 and 202 are exactly the same, but the mounting positions are different. A clamping groove 204 is provided inside the mounting position of the rack mounting plate 205 and the first rack 202, and the height of the clamping groove 204 is equal to or slightly greater than the height of the structural part of the first rack 202 clamped into the clamping groove 204, and the clamping groove is clamped with the first rack 202, and the rack mounting plate 205 is welded at the concave part of the clamping groove 204, and the rack mounting plate 205 is fixedly connected with the first rack 202.

[0044] The cross-section of the first racks 201, 202 is in a "convex" shape, the upper portion of the "convex" shape is a main roller stand, and the lower portion of the "convex" shape is a rack structure, and the main roller stand and the rack structure are integrated.

[0045] In this embodiment, the width of the main roller stand is in the range of 25-40 mm; the longitudinal section of the main roller stand is a rectangular structure.

[0046] like Figure 3 , 4 , 5, and 6, an embodiment shows a bridge structure component for a three-way fork; the bridge structure component for a three-way fork at least includes a bridge 100; the bridge 100 at least includes, first main rollers 101, 102, 103, 104, first secondary rollers 105, 106, a transmission shaft 107, a gear 108 and a bridge structure 111. The first secondary rollers 105, 106 and the gear 108 are sequentially arranged at one end of the transmission shaft. The first main rollers 101, 102, 103, 104 are installed on the bridge structure 111, and the first main rollers and the first secondary rollers are connected. A gap is left in between to accommodate the main roller vertical plate, the first main rollers 101, 102, 103, 104 are detachably mounted on the bridge structure 111 by means of mounting parts and nuts, the first secondary rollers 105, 106 are welded at both ends of the transmission shaft 107, the gear 108 is fixedly connected to the transmission shaft by snap-on or welding, the number of teeth of the gear in the middle part of the gear 108 may be different from the number of teeth of other gears 108, and the first secondary rollers 105, 106 are parallel to the first main rollers 101, 102, 103, 104 in the horizontal direction.

[0047] The first main rollers 101, 102 and the first secondary roller 105 are parallel rollers. The first main rollers 101, 102, 103, 104 are detachably mounted on the bridge. The detachable method is to detach the first main rollers 101, 102, 103, 104 by unscrewing nuts and removing the main roller assembly 109.

[0048] The bridge assembly includes a bridge 100 , and the inner slide assembly includes an inner slide weld 200 . The bridge 100 is slidably connected to the inner slide weld 200 .

[0049] like Figure 1 , 2 , 3, 4, 5, and 6, an embodiment shows an inner slide 200 and a bridge frame 100 structural assembly for a three-way fork, comprising: a bridge frame 100 and an inner slide 200, wherein the bridge frame 100 and the inner slide 200 are slidably connected with the first racks 201 and 202 installed on the inner slide via first active rollers 101, 102, 103, 104, first auxiliary rollers 105 and 106 mounted on the bridge frame 100; the inner slide 200 comprises first racks 201 and 202, which are connected by bolts or welding. The first rack 201 and the second rack 202 are mounted on the inner slide 200 in a manner, and the first racks 201 and 202 can also be formed together with the inner slide 200; the inner slide 200 is also provided with a first structural protrusion 203 and a slot 204, and the first protrusion structure and the slot 204 are grooves opened on the inner slide 200 by cutting, the first rack 201 is arranged on the first structural protrusion 203 and abuts against the first structural protrusion 203, and the second rack 202 is clamped in the slot 204; the first rack 201 and the second rack 202 include a main roller stand and a rack structure, the main roller stand is located above the rack structure; the bridge 100 includes first main rollers 101, 102, 103, 104, first secondary rollers 105, 106, a transmission shaft 107 and a gear 108, the first main rollers 101, 102 and the first secondary roller 105 are arranged on both sides of the first rack 201 to clamp the first rack 201, the first main rollers 103, 104 and the first secondary roller 106 are arranged on both sides of the first rack 202 to clamp the first rack 201 The first rack 202 is clamped, the first secondary roller 105 and the first secondary roller 106 are respectively arranged at the upper and lower ends of the transmission shaft 107, the first secondary roller 105 and the first secondary roller 106 are respectively connected to the inner side of the bridge frame 100 through welding parts, there are two gears 108, both are arranged on the transmission shaft 107 and are arranged one by one with the first racks 201 and 202, the gears 108 are meshed with the first racks 201 and 202, and the gears 108 drive the bridge frame 100 to move on the inner frame.

[0050] The main roller upright plate and the rack structure are cut and formed from the same blank, and the main roller upright plate and the rack structure are a whole; wherein, in conventional technical means, the main roller upright plate and the rack structure are designed separately and installed together by assembly. The above method has the problem that the main roller upright plate and the rack structure are not firmly assembled and have low strength. In the present solution, the main roller upright plate and the rack structure are cut from a whole piece of material, do not require assembly, have high strength, and improve the stability and safety of the rack.

[0051] The thickness of the main roller upright plate is greater than 30 mm. The main roller upright plate needs higher strength to bear the load of the bridge frame 100. In this solution, the load capacity of the main roller upright plate is increased by thickening the main roller upright plate.

[0052] The first main rollers 101, 102 and the first auxiliary roller 105 are parallel rollers; the first main rollers 103, 104 and the first auxiliary roller 106 are parallel rollers, wherein, by setting the first main rollers 101, 102 and the first auxiliary rollers 105 and the first main rollers 103, 104 and the first auxiliary rollers 106 as parallel rollers, the force on each roller is more uniform, thereby extending the service life of the equipment and enhancing the safety of the equipment.

[0053] The bridge frame 100 includes a main roller assembly 109 and a nut 110, the first main rollers 101, 102, 103, 104 are installed on the bridge frame 100 by means of the main roller assembly 109 and the nut 110, the main roller assembly 109 passes through the outer shell of the bridge frame 100 and is tightened using the nut 110 to install the first main rollers 101, 102, 103, 104 in place; the first main rollers 101, 102, 103, 104 are replaced by disassembling the corresponding main roller assemblies 109 and the nut 110, conventional technical means often directly fix the rollers on the bridge frame 100 structure by welding, which makes it extremely difficult to disassemble the rollers, and it is difficult to troubleshoot the roller damage or failure. In the present application, the first main rollers 101, 102, 103, 104 are assembled on the bridge frame 100 by using the nut 110 and the assembly, which is convenient for disassembly and replacement, and convenient for troubleshooting.

[0054] The rack structures of the first racks 201 and 202 overlap in vertical projection. Since the first rack 201 is highly matched with the first rack 202, the bridge 100 is not easily damaged during operation.

[0055] The first racks 201 and 202 are made of the same embryo, and the embryo is separated into the upper rack and the lower rack before assembly. By using the same embryo to manufacture the first racks 201 and 202, the problem that the upper and lower racks of the forklift are difficult to match is solved, which greatly improves the matching accuracy. In addition, the above effects can be obtained by using the same embryo only through simple processing, which is simple and convenient.

[0056] The slot 204 leaves a movable gap for the second rack 202 .

[0057] The auxiliary roller is fixedly connected to the transmission shaft 107 , and the auxiliary roller rotates along with the transmission shaft 107 .

[0058] Finally, it should be noted that the above implementation modes are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned implementation modes, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned implementation modes, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various implementation modes of the present application.

Claims

1. An inner slide structure assembly for a three-way fork, characterized in that: The invention at least comprises an inner slide weld (200) and a first rack (201, 202); the inner slide weld (200) at least comprises a rack mounting plate (205), the rack mounting plate (205) is fixed on the inner slide weld (200), the first rack (201, 202) is mounted on the rack mounting plate (205), and the first rack (201, 202) is structurally divided into a rack structure and a main roller stand.

2. The inner slide structure assembly for a three-way fork according to claim 1, characterized in that: The rack mounting plates (205) are provided in two groups, one group being provided on the upper and lower sides of the inner slide frame weld (200), and the upper and lower rack mounting plates (205) are each provided with a first rack (201, 202).

3. The inner slide structure assembly for a three-way fork according to claim 2, characterized in that: A slot (204) is provided inside the mounting position of the rack mounting plate (205) and the first rack (202); the height of the slot (204) is equal to or slightly greater than the height of the structural portion of the first rack (202) that is snapped into the slot (204).

4. The inner slide structure assembly for a three-way fork according to claim 3, characterized in that: The cross section of the first racks (201, 202) is a "convex" shape.

5. The inner slide structure assembly for a three-way fork according to claim 4, characterized in that: The width of the main roller stand is in the range of 25-40 mm.

6. The inner slide structure assembly for a three-way fork according to claim 1, characterized in that: The longitudinal section of the main roller stand is a rectangular structure.

7. A bridge structure assembly for a three-way fork, characterized in that: At least comprising a bridge frame (100); The bridge frame (100) at least comprises a first main roller (101, 102, 103, 104), a first secondary roller (105, 106), a transmission shaft (107), a gear (108) and a bridge frame structure (111). The first secondary roller (105, 106) and the gear (108) are respectively arranged at two ends of the transmission shaft, the first main roller (101, 102, 103, 104) is installed on the bridge frame structure (111), and a gap is left between the first main roller and the first secondary roller to accommodate a main roller vertical plate.

8. A three-way fork bridge structure assembly according to claim 7, characterized in that: The first main rollers (101, 102) and the first auxiliary roller (105) are parallel rollers.

9. A three-way fork bridge structure assembly according to claim 7, characterized in that: The first main rollers (101, 102, 103, 104) are detachably mounted on the bridge.

10. A three-way fork bridge structure assembly according to claim 9, characterized in that: The disassembly method is: disassembling the first main rollers (101, 102, 103, 104) by unscrewing the nuts and removing the main roller assembly (109).

11. An inner slide and bridge structure assembly for a three-way fork, characterized in that: include: The bridge assembly comprises a bridge (100), the inner slide assembly comprises an inner slide weld (200), and the bridge (100) is slidably connected to the inner slide weld (200); The inner slide weld (200) comprises: a first rack (201, 202) and a rack mounting plate (205), wherein the first racks (201, 202) are mounted on one side of the first rack mounting plate (205); a first structural protrusion (203) and a clamping groove (204), wherein the first rack (201) is arranged on the first structural protrusion (203) and abuts against the first structural protrusion (203), the first rack (202) is mounted on one side of the first rack mounting plate (205), and the first rack (202) and the first rack mounting plate (205) are clamped in the clamping groove (204); The first rack (201, 202) comprises a main roller stand and a rack structure, wherein the main roller stand is located above the rack structure; The bridge frame (100) includes a main roller (101, 102, 103, 104), a first auxiliary roller (105, 106), a transmission shaft (107), a gear (108) and a bridge frame crossbeam structure (111); the first main roller (101, 102) and the first auxiliary roller (105) are arranged on both sides of the first rack (201) to clamp the first rack (201); the gear (108) is arranged on the transmission shaft (107) and corresponds to the first rack (201, 202); the gear (108) is meshed with the first rack (201, 202); the first auxiliary roller (105), the first main roller (101, 102) and the gear (108) constitute a first roller assembly.

12. The inner slide and bridge structure assembly for a three-way fork according to claim 11, characterized in that: The first roller assembly, the first rack (201, 202), and the rack mounting plate (205) are respectively installed on the bridge beam structure in one set above and below the bridge frame assembly.

13. The inner slide and bridge structure assembly for a three-way fork according to claim 12, characterized in that: A slot (204) is provided inside the mounting position of the rack mounting plate (205) and the first racks (201, 202), and the height of the slot (204) is equal to or slightly greater than the height of the structural part of the first rack (202) that is snapped into the slot (204).

14. The inner slide and bridge structure assembly for a three-way fork according to claim 11, characterized in that: The main roller stand and the rack structure are cut and formed from the same blank, and the main roller stand and the rack structure are integrated.

15. The inner slide and bridge structure assembly for a three-way fork according to claim 11, characterized in that: The bridge frame (100) comprises a main roller assembly (109) and a nut (110), and the main rollers (101, 102, 103, 104) are detachably mounted on the bridge frame structure (111) via the main roller assembly (109) and the nut (110).

16. The inner slide and bridge structure assembly for a three-way fork according to claim 12, characterized in that: The rack structures of the first racks (201, 202) in the upper and lower sets of the first roller assemblies overlap in projection in the vertical direction.

17. The inner slide and bridge structure assembly for a three-way fork according to claim 16, characterized in that: The first racks (201, 202) in one set, one set above the other, are manufactured from the same embryonic body, and before assembly, the embryonic body is separated into two first racks (201, 202) that match each other.

18. The inner slide and bridge structure assembly for a three-way fork according to claim 14, characterized in that: The clamping groove (204) leaves a movable gap for the first rack (202).

19. The inner slide and bridge structure assembly for a three-way fork according to claim 11, characterized in that: The first auxiliary roller is fixedly connected to the transmission shaft (107), and the auxiliary roller rotates along with the transmission shaft (107).

20. The inner slide and bridge structure assembly for a three-way fork according to claim 11, characterized in that: The first racks (201, 202) are mounted on the inner slide weld (200) via threads.

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